English physician William Harvey is credited with having been the first doctor to discover the circulation of blood in 1628. The first successful blood transfusion was performed by another physician – Richard Lower – in 1665 when he managed to keep dogs alive by transfusion of blood from other dogs.
The first successful transfusion of human blood was used to treat postpartum haemorrhage (excessive loss of blood following childbirth), this time performed by British obstetrician Dr James Blundell in 1818.
(Earlier, in 1795, American physician Philip Syng Physick had succeeded in performing what would have been recognised as the first successful human blood transfusion. He however failed to publish his results).
Traditional Blood Transfusions
For two centuries, then, blood transfusion has been a critical life-saving mechanism that has been used on patients who have experienced heavy blood loss through accidents, childbirth, surgery and other ways. While blood transfusion will remain an important part of medical practice, recent scientific development may however relegate the practice of donating blood to no more than a medical curiosity.
Stem cells have in recent years significantly altered the medical landscape. They are literally the building blocks of life. A complete human being develops from a fertilised egg cell, which is the first stem cell. By definition stem cells are undifferentiated cells that can give rise to indefinitely more cells of the same type and, crucially, certain other kinds of cells arise by differentiation. This characteristic of stem cells gives doctors an unlimited supply of cells to work with to heal injuries and cure diseases.
Creating Blood using Stem Cells
Scientists have now shown that it is possible to create blood using stem cells. This project, starting in 1998, has been 20 years in the making, when embryonic stem cells were first isolated. Blood-forming stem cells have now been successfully differentiated with the process centring on reprogramming a patient’s own skin cells. The process involved exposing the stem cells to a chemical soup which prompted them to become a tissue, which in turn makes blood stem cells. The tissue was tested in mice and successfully produced new blood cells. Dr George Daley, a researcher and dean of Harvard Medical School is confident that the work of two decades will soon be crowned with success when the process is replicated in humans and, as he says, generate ‘bona fide human blood stem cells in a dish.’ This process has the potential of making available to doctors an unlimited supply of blood and immune cells for transplants.
The perennial shortage of donated blood would no longer be the hindrance that it is today. Concern has been raised in England, for instance, where blood donation (once a time-honoured tradition) has seen a dramatic decline of 24.4% in 2015, compared to 2005 figures. Drug screening would become a more efficient process and personalised treatments for blood disorders would become the norm.
This new development, with its potential for providing an unlimited supply of blood stem cells, would provide an important backup to traditional blood banks in case of emergencies and would eventually be the default system of replenishing blood.
Persons with genetic blood disorders would benefit greatly from this new process as it would be possible to correct their genetic defects (using gene editing) and make ‘clean’ functional blood cells.
New advances in Science are sometimes met with vigorous resistance from people who misinterpret the intentions of the scientists and researchers or who object out of religious scruples. Life-saving surgery, for example, would be non-existent today had the medical profession caved in and listened to the barrage of criticism directed at doctors who performed operations on live animals. These practitioners were derisively labeled as ‘vivisectionists’. Common sense prevailed however, with the result that today neurosurgeons, cardiothoracic surgeons and others are able to practice their craft and save lives.
So it is with stem cell research. To suggest that the early days of stem cell research were rocky would be an understatement. In 2001 an executive from the White House even restricted federal funding for stem cell research. These restrictions were somewhat eased in 2009. Work on stem cells goes on largely unhindered now in various parts of the world with the only major restriction being the high cost of this branch of medicine.
Five Important Recent Stem Cell Innovations
The last year alone has yielded 5 important stem cell innovations considerably expanding medical knowledge and providing the world with the potential of treating and curing more diseases. Stem cells are particularly useful in Medicine because of their ability, in their natural immature state, to develop (in virtually unlimited numbers) into any type of cell.
This ability of stem cells to differentiate into any cell type opens wide their application in various fields of medicine and that includes the brain. 2 important innovations in this field are worthy of note here.
Regenerating brains of brain-dead patients is now a step closer to reality. Pioneered by researchers at Bioquark Inc and Revita Life Science India the project aims at regenerating the brain cells of 20 patients, formally certified as brain-dead as a result of traumatic brain injuries. The goal of this ambitious project seeks to determine whether the central nervous systems of these patients can be restored. Should the team succeed in growing new brain cells to replace the dead ones in the brain this development would pave the way for the development of new therapies to treat patients suffering from degenerative conditions as well as those in vegetative states.
The second important innovation that is brain-related is the creation of ‘brain balls’. These are tiny brains in the shape of balls that have been developed from stem cells and they are proving very useful in studying how different diseases affect the brain. Conditions such as Zika and its effects on the brain can be studied to greater effect using these brain balls.
The third important innovation coming out of stem cell research over the last one year holds good news for diabetes patients. Researchers from the Washington University School of Medicine in St Louis and from Harvard University succeeded in taking stem cells from the skin of patients with diabetes and changing them into insulin-secreting cells. While research in this area is not complete progress is good and the implications would change the way diabetes is managed for good. The inability of Type 1 diabetics to create insulin means that patients need to inject themselves with this hormone (insulin) throughout the day. The creation of the stem-cell derived, insulin-secreting cells and injecting them into diabetes patients to control blood sugar would remove the need for medication.
The fourth ground-breaking innovation in the stem cell field could revolutionise the field of dentistry as we know it. Stem cells found in the pulp of teeth have the potential to regrow into adult teeth, making redundant the use of crowns and dentures. Saving your baby teeth or even adult teeth that have been removed through surgery may allow stem cells to be harvested from them and these may later be used to grow new teeth for you. The stem cells harvested from these saved teeth (a practice known as cryopreserving) also have the potential to be used as therapy for brain injuries and to even fight certain cancers.
The fifth innovation in stem cell research that is worthy of note is using a newly developed stem cell treatment to cure leukemia. Leukemia is a cancer of the blood, originating in the bone marrow, and is traditionally treated by a combination of chemotherapy and radiotherapy. Doctors have however managed to bypass these two rather toxic treatments and cured 2 babies of leukemia using the newly developed stem cell treatment. Stem cells are taken from a donor, genetically altered with the ability to fight cancer and then injected back into the patient. Doctors are able to keep reserves of the genetically altered cells for later treatment for those in need.
We applaud these new innovations in the stem cell field. We have however consistently been at the cutting edge of medical innovations, including the field of stem cell research. We offer world-class stem cell based treatments for various conditions including Spinal Cord Injuries, Multiple Sclerosis, Muscular Dystrophy, Brain Injuries and many more. We welcome further enquiries regarding our work and look forward to discussing how we can best serve you.
Spinal Muscular Atrophy (SMA) is a neurodegenerative disease targeting motor neurons. It normally occurs in the spinal cord. Nerve cells send messages from the brain to the muscles and vice versa. They are primarily responsible for bodily movements such as walking, swallowing, and breathing.
Severe strains of SMA cause paralysis and eventually death for the victims. Patients with milder forms normally experience weakness and wasting away of the muscular tissue. SMA involves the loss of nerve cells called motor neurons.
In most cases the proximal and lung muscles are affected first, but then spread to other body systems.
Neurons in SMA patients are unable to produce adequate amounts of a protein called Survival of Motor Neuron (SMN). This causes wasting away and eventually death of the cells.
Scientists have researched and developed different therapies to alleviate and treat the effects of SMA, and most of them have been targeted at fixing the gene itself. Approximately one in 50 people are carriers of the fatal genetic disease, which kills the most number of infants under the age 2.
Recent Harvard Research
In a recent discovery, researchers at the Harvard Stem Cell Institute (HSCI) have identified a compound that helps stabilise and protect the SMN protein. It uses induced pluripotent stem cells to make human models of neurological diseases.
Lee Rubin, a faculty member from the institutes’ Department of Stem Cell and Regenerative Biology sought to determine why motor neurons were targeted, and found out that the motor neurons experienced similar stress as those affected by Amyotrophic Lateral Sclerosis, also known as Lou Gehrig’s disease. His team of researchers also found out that some SMA affected neurons were dying before others, though they all experienced the same environment.
When the team analysed motor neurons derived from ALS patients, they found out that motor neurons with the highest levels of SMN protein were most likely to survive than those with lower levels. The research also showed that the survival of motor neurons depended on the availability of the SMN protein. The results suggest that if the amount of SMN protein is increased in any single motor neuron, the cell could be saved from dying.
In order to affirm these results, researchers led by Nadia Litterman induced human and murine motor neurons with a compound called Cullin, which is thought to regulate protein generation in cells. They found out that when exposed to Cullin, the SMA proteins became more stable and even multiplied abundantly. As a consequence of this, all motor neurons survived in the human specimens in the dish, and the in mouse models.
In summarising the results of the study, Rubin pointed out the discovery could end up benefitting patients who suffered from ALS as well as SMA.
Harvard’s office of technology development have filed an application to patent this approach towards the search for a cure for both diseases.
Parkinson’s disease is a progressive movement disorder, meaning that symptoms continue and worsen over time.
The devastating effects of Parkinson’s disease are very well known. Parkinson’s causes the malfunction and death of vital nerve cells in the brain, called neurons and this primarily affects neurons in an area of the brain called the substantia nigra. These neurons produce dopamine, a chemical that transmits brain signals (called a neurotransmitter) that regulate motor control and energy levels. In Parkinson’s disease, the dopamine levels drop as neurons degenerate, producing the characteristic symptoms.
Parkinson’s Symptoms
Different symptoms are experienced by different people, however the most common is a tremor of the hands, arms and legs. Other symptoms include the rigidity of the limbs, and some also experience impaired balance, poor posture and the inability to coordinate movement of the limbs. Over time, the victim’s movement becomes very slow.
About one million people in the US are living with Parkinson’s disease. There are however a number of treatment options out there to manage the progression such as surgery, medication and therapy to help in the management of the symptoms of the disease.
Promising Research
The cause is mostly unknown, and presently, no cure for Parkinson’s has been found, however, scientists at Sweden’s Karolinska Institute seemed to have pulled the proverbial “white rabbit out of a hat” when they cured mice that had Parkinson’s disease.
They used the mice model in order to test the efficacy of the potential treatment before trying it on humans. They subjected mice, which were barely able to move in their cages, with a strain of human brain cells that had been cultured in the lab. The mice had a mouse version of Parkinson’s disease.
The results were astonishing. The researcher’s had managed to use stem cell replacement therapy to restore the destroyed brain cells. The mice started to display signs of recovery and within a few weeks, they started to walk straight.
Stem cells have the ability to regenerate into different types of cells in the body like skin or muscle cells. When these were injected into the brains of mice with Parkinson’s-like damage, the viruses infected plentiful brain cells called astrocytes.
The molecules, reprogrammed some of the astrocytes to become dopamine neurons. These neutrons multiplied well for 15 weeks, meaning that they remained unchanged. This meant that this treatment preserved the brain circuitry that is normally destroyed by Parkinson’s.
If the treatment works, it means that in future, it might be possible to inject a patient with a single dose of this treatment each time the brain runs short of dopamine neurons.
The technology to develop such treatments to reprogram molecules to astrocytes exists, but treatment is still a long way off. Patients with Parkinson’s disease will have to wait until such a time that the treatment is ascertained to be safe for human beings.
Stem cells are today recognised for the vast potential they hold in curing diseases and healing injuries. With successes on various fronts, a great deal of research still needs to be undertaken to fully understand stem cells, which are, essentially, the building blocks of life.
With their ability to multiply rapidly and to develop into a variety of cell types they provide doctors with huge supplies from which to draw from to initiate cures for various illnesses and healing for diverse injuries.
Significant Investment
Knowing very well that stem cells might hold the answers to diseases that have hitherto defied science, Californians voted for 3 billion US$ to be used in stem cell research in 2004. Considered as one of California’s biggest investments in Science, the whole project faces the gloomy prospect of dying still-born as the money is fast running out. With treatments yet to emerge from the researches the voters of Californian now face a stark choice: call off the project and count their losses or vote in more billions that may turn the tide and produce concrete results in cutting edge stem cell therapies.
Out of the initial $3 billion, slightly over half a billion ($650 million) remains. This amount is expected to run out in 2020 and already lobbying to raise more money from the private sector is under way. Jonathan Thomas, chair of the California Institute for Regenerative Medicine (CIRM) governing board acknowledges the predicament they find themselves in. CIRM, itself a creation of the vote (Proposition 71) that established the US $3 billion research fund, has funded over 750 projects and reports promising results from various clinical trials. One outstanding example will suffice. In a clinical study that CIRM co-founded, and that involved 10 children with congenital severe combined immunodeficiency, the results obtained were emphatic enough to warrant the continuation of the various studies under way. 9 out of the 10 children in the study were reported to be doing well 8 years after treatment. The children were able to go to school, play outside and overcome the inevitable infections, all without the aid of injections.
CIRM has also played a pivotal role in enabling research on ageing and regenerative medicine. With the construction of a dozen facilities dedicated to this work many early-career academics have benefitted from these grants dispensed by CIRM. Early federal restrictions in this line of scientific study (following President George W. Bush’s order in 2001) plus the prohibitive cost of stem cell research had locked out many of these academics from this field.
To put to maximum use the remaining $650 million CIRM is now working with Quintiles IMS of North Carolina (a contract-research organisation) to carry out further clinical trials in the hope that by so doing 40 new stem cell therapies will transition to the clinical trial stage by 2020. Americans for Cures and advocacy group aims at getting an additional US $ 5 billion to continue research into stem cells and intends to poll voters on this matter. With the current US administration proposing cuts to the National Institutes of Health (NIF), Bob Klein, instrumental in putting Proposition 71 on the ballot and who also leads Americans for Cures, expresses high hopes that Californians will once again step up and vote for science.
While Bob Klein and his associates make every effort to raise more funds (even soliciting funds from wealthy individuals and philanthropic organisations), others are not so sure that this is the way to go. John Simpson, attached to the advocacy group Consumer Watchdog, and who directs stem cell oversight work in this group, is particularly disenchanted with the idea of securing research funding through a popular vote and he is opposed to any efforts to extend CIRM. The disbursement of funds through CIRM has previously attracted its share of controversy. From some of the scientists vetting grants having vested interests to the perception that CIRM had not been astute enough in directing research, many have felt that CIRM displayed a lack of probity that held back the progress of research and, by extension, facilitated wastage of the resources.
The entry of Randy Mills as CEO of CIRM did a lot to change how CIRM is perceived. Although he is now leaving to head the National Marrow Donor Program, he has left behind a leaner, stronger agency that can now boast of an accelerated funding process. He has also been instrumental in shortening the period between research and clinical trials and is credited with cleaning up an agency that was on the verge of losing all credibility, especially with proven cases of conflict of interest coming to light. Crucially, Mills has made it easier for the Food and Drug Administration (FDA) to approve stem cell treatments.
Researchers point out that expecting treatments to be rolled out after only a decade of research is unrealistic. The monolithic nature and painfully slow pace of drug development (from allocation of funding to unveiling of treatments) would appear to bear out the researchers’ concerns. Ultimately it will be up to the people of California to weigh the issues raised and decide whether further funding will be forthcoming or whether the researchers will have to seek funding elsewhere to complete their projects.
Amyotrophic Lateral Sclerosis (ALS) is a rare disease that mainly involve the nerve cells responsible for controlling the voluntary movement of muscles. ALS specifically attacks motorneurons in the brain stem, cortex and the spinal cord thereby causing effects such as muscle weakness, spasticity and paralysis. People affected by ALS experience difficulties in performing everyday functions like walking, breathing and talking. ALS is degenerative and it gradually causes a degeneration of motor neurons, leading to their death, and eventually leading to paralysis and death of the victim. This is usually within 3 to 5 years of initial diagnosis. Most of the victims of this disease die of respiratory complications as a result of the progressive weakening of the patient’s respiratory functions.
ALS Incidence
According to the Johns Hopkins Medicine, statistics show that ALS affects up to 30,000 patients in the United States of America with about 5,000 new cases being diagnosed every year. It is responsible for as many as five out of every 100,000 deaths of people aged 20 years or older. ALS indeed is a mystical disease as it is not easy to pinpoint the exact causes of ALS as it has no clear identifying cause. ALS does not impair a person’s intellectual reasoning, vision, hearing or sense of taste, smell and touch.
Amyotrophic Lateral Sclerosis (ALS) is a neurological disease which impacts motor neurons that are involved in muscle movement throughout the body.
ALS is also known as Lou Gehrig’s disease and has no known cure. It was first discovered by French neurologist Jean-Martin Charcot in the year 1869, but became more noticeable in the year 1939 after one of baseball’s most famous stars in the United States Lou Gehrig was diagnosed with it. Fans noticed that Lou Gehrig, once a very formidable baseball player had suddenly lost his touch and eventually pulled out of one of the games. He passed away barely two years after the first symptoms of ALS were noticed.
One of the most famous modern scientists, Prof. Stephen Hawking is known to suffer from the motor neuron disease. His doctors had believed that he would be dead within a few years. He requires a motorized wheelchair to move around as he is paralyzed. He also communicates through a special computer which he controls with a muscle on his cheek. Hawking’s case has defied a lot of theories on ALS as he is still alive almost 50 years after he was first diagnosed with it.
ALS can be further classified into two categories: sporadic and inherited. Sporadic cases of ALS occur in up to 90% of all reported cases, while about 10% is inherited from family members. The disease usually starts around the age of 60 and in inherited cases it starts at around the age of 50.
ALS Research
Research for the cure of ALS has been ongoing for quite a number of years. Scientists have proposed and tested many therapies and treatments, but the mortality rate due to effects of ALS still remains at almost 100%. All victims of ALS have succumbed to the debilitating disease.
The advancement of technology has enabled researchers to explore and study the disease, its effects and possible remedial cures to help decrease this mortality rate. Researchers have come up with Stem Cell-based Therapies that could eventually be used as a cure for ALS. This document will explore the use of Stem Cell-based therapies to treat the disease and also discuss what this advancement could mean for ALS patients in the near future.
Recently, Stem Cell-based Therapies, as potentially effective treatments of ALS, have emerged employing intraspinal, intrathecal, intramuscular, intracerebral, or intravenous autologous Stem cell administration routes.
Mesenchymal Stem cells
Mesenchymal Stem cells (MSCs) are multipotent adult stem cells that are present in all tissues. MSCs can differentiate into different tissues (meaning they can produce more than one type of specialised cell of the body) ranging from mesoderm, ranging from Osteocytes (bone cells), Chondrocytes (cartilage cells) and Adipocytes (fat cells). It has also been shown that MSCs could be pluripotent meaning that they can also differentiate into tissues and cells of non-mesodermal origin like neurons and epithelial cells.
MSCs can differentiate into many different types of cells that do not belong to the skeletal tissues, such as nerve cells, heart muscle cells and liver cells, which form the inner layer of blood vessels, and can therefore be used in the repair inured cell tissues of other cells of a different type.
Human undifferentiated Mesenchymal Stem Cells (hMSCs) can be harvested from different sources. They can be gotten from the bone marrow, the umbilical cord blood, adipose, and Wharton’s jelly. These cells have been tested in rodent models to treat diseases such as ALS and Spinal Cord Injury. Many studies have shown that the administration of human undifferentiated Stem cells is safe and can delay motor function and can increase the life expectancy of the subjected patients.
MSC and ALS Research
One test has increased worldwide interest in stem cell based ALS treatment. A group of scientists based in the Czech Republic performed a clinical trial in ALS patients to assess the safety and effectiveness of the administration of autologous bone marrow Stem Cell Therapy in a group of patients suffering from ALS.
In this particular test, bone marrow derived Mesenchymal Stem cells were used to assess the safety and efficacy of a single intrathecal administration of autologous Bone Marrow Mesenchymal Stem cells (BM-MSCs) in ALS treatment of patients with ALS. This trial was approved by the State Institute for Drug Control and the informed consent form approved by the ethics committee of the University Hospital Motol in Prague, Czech Republic.
All subjects entering the study gave an informed consent before any procedures specified in the protocol were performed on them. The patients were assured that the procedures involved in the study protocol would not interfere with the standard method of care and treatment.
A group of 26 people with symptoms of ALS were enrolled to participate in this program, and out of these 23 were found suitable for efficacy evaluation. These subjects were prescreened for a period of six months before Stem Cell Transplantation was performed. They were examined three times at 6, 3 and 1 month before treatment in order to check the progression rate of the disease. After that, they were also examined at regular intervals at 3, 6, 9, 12 and 18 months to assess the safety and effectiveness of the administered treatment.
Potential and adverse effects of this therapy were assessed during this period and the outcome was evaluated by the ALS Functional Rating Scale (ALSFRS).
The Amyotrophic Lateral Sclerosis Functional Rating Scale (ALSFRS) is an instrument for evaluating the functional status of patients with Amyotrophic Lateral Sclerosis. It can be used to monitor functional change in a patient over time. Such measures as speech, swallowing, handwriting walking and breathing are measured and compared over time.
The forced vital capacity and weakness scales of these patients were also assessed. Bone marrow derived stem cells were administered through a method known as intrathecal application where the bone marrow derived Stem cells are injected into the spinal theca. This is the area in the spinal cord that hold the cerebrospinal fluid. The implanted cells spread without crossing the blood-brain barrier.
Objectives of the Study
One of the primary objectives of this study was to assess the safety of the treatment to patients. All patients’ complaints regarding their medical conditions were recorded. They were monitored for reactions such as allergies, fever and any abnormal pains. Any bleeding, new infections and paralysis during the treatment were also recorded.
While in hospital, the patients’ temperature, blood pressure and any other vital functions were observed and recorded on a daily basis. If no further complications were observed the patients were discharged. 30% of these patients experienced mild to moderate headaches. No other serious adverse reactions were reported from this group.
The other objective of the trial was to evaluate the effect of the transplantation on the rate of disease progression pre and post treatment. The changes in ALSFRS after treatment were compared to the changes observed prior. The result of this was that there was a significant stabilisation of ALSFRS score in the patients. Tests after 6 months showed a marked slowdown in disease progression.
Conclusion from the Study
From the results of these tests, it can be concluded that intrathecal application of BM-MSC is ALS patients is a relatively safe procedure and can slow down the progression of the disease.
It also might be important to start the therapeutic intervention much earlier, similar to animal models, but this would require earlier ALS diagnosis and/or identification of early disease markers in suspected cases. There is a need for further clinical trials to elucidate the most effective cell type, the most effective methods of delivery, and proper doses in single or repeated applications.
Such positive results show that a lot of progress has been made show that ALS can be contained and this gives a lot of hope to the victims of ALS in the coming future.
Stem Cell Treatment for ALS Available Today
We are excited to offer Stem Cell Therapy at our state of the art facilities to stop the progression of ALS in our patients.
We have a dedicated team of highly skilled doctors, nurses and other practitioners based in our world class medical facility in Bangkok, Thailand. They work around the clock to ensure our patients comfort and welfare before, during and after treatment is of world class standard.
Our patients, who come from around the world, are a testimony to the fact that they have been able to notice a change in the way their bodies respond to treatment. To ensure that our patients get the best out of the Stem Cell-based Therapy, we administer a combination of supportive remedies such as injection of growth factors and vitamins, rehabilitation and detoxification programs to treat them.
Researchers from Peking University in China together with scientists at the Salk Institute have found a way to generate both embryonic and extra-embryonic tissues. The two groups of scientists have collaborated and succeeded in using a chemical cocktail which enables cultured mouse and human stem cells to generate both these tissues. The implications of this new development are wide-ranging and could lead to enhanced disease modelling, improved drug development and ultimately tissue regeneration. The technique used by the researchers is expected to lead eventually to improvement in vitro fertilisation techniques through more in-depth knowledge on the workings of placental function and embryo implantation.
The implications of ready availability of stem cells that can differentiate into both embryonic and extra-embryonic tissues are far-reaching and are not confined to treatment and repair functions. Professor Juan Carlos Izpisua Belmonte of the Salk Institute is understandably upbeat on how this development will alter the stem cell landscape.
Stem cells are the building blocks of the human body. These undifferentiated cells have the ability to differentiate into specialised cells. This unique characteristic of stem cells makes them particularly suitable in any treatment that may require the growing of new cells to repair and replace those that have been injured or compromised by disease.
A pluripotent stem cell refers to a stem cell that has been genetically modified to behave like an embryonic stem cell. These cells are capable of forming all adult cell types and while they can be taken from any tissue, they are typically harvested from the skin or the blood. Pluripotent stem cells have proved invaluable in the treatment of motor neuron diseases such as Spinal Muscular Atrophy (SMA), Amyotrophic Lateral Sclerosis (ALS) and Primary Lateral Sclerosis (PLS). Indeed Stem Cell Therapy has also been deployed in the treatment of other disorders such as Spinal cord injuries and Muscular Dystrophy among many others.
As diverse as pluripotent stem cells have proven in the treatment of hitherto irreversible conditions, there is one property that they do not possess. This is the ability to differentiate or develop into tissues that support the embryo and the placenta. The tissues thus produced are known as extra-embryonic tissues. Totipotent stem cells do however have this capacity and that is the essential difference between them and pluripotent cells.
Because the newly discovered cocktail facilitates the stable differentiation to either type (embryonic and extraembryonic) the new cells thus differentiated have been dubbed extended pluripotent stem (EPS) cells. The SALK team and the Peking University researchers discovered that combining four chemicals and a growth factor could stabilize the human pluripotent stem cells in the early stages allowing them to contribute to a mix of cells from two different species. Applying the same factors to mouse cells they found that the newly differentiated mouse stem cells not only gave rise to embryonic tissue types but also differentiated into cells from the extraembryonic lineages.
More remarkable still (and unprecedented in the field) the scientists discovered that a single cell could develop into an entire adult mouse. Professor Belmonte and his team anticipate that the ‘derivation of a stable stem cell line with totipotent-like features will have a broad and resounding impact on the stem cell field’. Certainly the generation of entire human organs from stem cells has just moved one step closer to reality.
Amyotrophic Lateral Sclerosis (ALS) has been a particularly troublesome disease to manage due to the failure of growth factors in clinics. ALS is a neurological disorder that affects nerve cells (or neurons) that are responsible for controlling voluntary muscle movement. Specific types of these motor neurons in the spinal cord rely in part for their survival on distinct growth factors. Georg Haase of Aix-Marseille University in France led a study whose results suggest that when these growth factors are combined they may afford protection to motor neurons that have been damaged by disease.
The potential benefits of growth factors in managing ALS been known to the medical profession for decades now. In the early 1990s neurotrophic factors (NTFs) which are peptides (or small proteins) and which are a family of biomolecules that support the growth, survival and – crucially – the differentiation of developing and mature neurons were used in early therapies to control ALS. These therapies were however ineffective and it is only in recent years that researchers have found that when these growth factors are combined then the expected results are more assured. The combination of these growth factors provide trophic (nutrition-related) support for motor neurons, especially in the developing spinal cord.
What is ALS?
Amyotrophic Lateral Sclerosis (ALS) is a neurological disease which impacts motor neurons that are involved in muscle movement throughout the body.
A working hypothesis that seeks to explain why a combination of growth factors seem to work (as opposed to when only one type is used) postulates that particular types of motor neurons are protected by particular types of growth factors. Indeed Georg Haase and his team, through rigorous scientific processes have put this theory to the test to ultimately identify which particular NTFs protect which distinct classes of motor neurons in the developing lumbar spinal cord. Using this technique researchers will be able to isolate the substances needed to protect adult motor neurons and those that have been damaged by ALS. The results of these extensive analyses will have wide-ranging implications in the therapies used to control ALS as neuroprotective treatment strategies will be tailored to the disease.
Further the use of Mesenchymal Stem Cells (MSCs), when combined with a spinal tap or lumbar puncture (LP), enhances the levels of many of these growth factors. MSCs are multipotent stromal cells which have the capability to differentiate into many different cell types and are therefore are a rich source in the treatment of a variety of disorders. MSCs can differentiate into adipocytes, which are fat cells, bone cells (known as osteoblasts), myocytes – which are muscle cells – and cartilage cells, known medically as chondrocytes.
Stem Cell Therapy to manage Amyotrophic Lateral Sclerosis is already in use and the benefits that accrue from this treatment are worthy of note. Stem Cell Therapy has been shown to alleviate the severe symptoms that characterise ALS. Patients have reported improvement in many areas including improved speech, easing of neuropathic pain and fatigue and amelioration of motor function. Patients have further witnessed an improvement in balance and coordination, the diminishing of tremors, easier swallowing and a general slowing down of the disease.
A 60 year old man has become the first man in the world to receive donated Induced Pluripotent Stem (iPS) Cells. The iPS Cell technology offers the same properties as Embryonic Stem Cells that allow them to be adaptable to the donor’s genetic makeup.
However, Embryonic Stem Cells researchers are constantly facing ethical concerns from stakeholders, which iPS Cells does not. This is a huge plus for stem cell researchers as they are now able to focus on developing breakthrough technology rather than constantly fighting lobbyists.
Besides, having a bank of ‘ready-made’ iPS Cells will ensure transplants are conveniently done at a more affordable cost.
Induced Pluripotent Stem (iPS) Cells
To create iPS Cells, mature cells are drawn from the donor and reprogrammed into an embryonic state. They are then manipulated into the type of cell that is desired for the treatment.
In Japan recently, skin cells, that were anonymously donated, we reprogrammed into iPS Cells and coaxed into a type of retinal cell and transplanted onto the patient. The recipient is an old man suffering from age-related macular degeneration. His doctors are hopeful that the new cells will stop the progression of the disease.
Previous Procedures
Based on the results from a previous similar procedure, the scientists were able to enhance the efficacy of the stem cells by donor reprogrammed iPS Cells. In 2014, a team led by Dr Yasuo transplanted iPS Cells into an elderly woman; the cells had been derived from her own skin cells. Her procedure was successful (no rejections), but a similar procedure on another patient showed genetic abnormalities and the procedure was aborted. Cells from elderly macular degeneration patients would normally have accumulated genetic defects that increase the risk of the procedure.
The woman is faring well as reported by her doctors; the transplanted cells are still intact long after the surgery and her vision has not declined. The team however, had stopped the trials in order to find a solution to the risk associated with genetic defects.
In the most recent procedure performed by the same team of doctors, the doctors used reprogrammed and banked iPS Cells derived from a donor’s skin cells.
While this approach could be the solution the researchers were looking for, there is still the ever-hovering risk of immune rejection. This risk is particularly greater when the stem cells are derived from a donor who is not an exact genetic match. Shinya Yamanaka acknowledges this concern and holds that ‘banked cells should be a close enough match for most applications’.
Yamanaka is said to be establishing an IPS Cell bank that will match donors to recipients based on the three genes that code for human leukocyte antigens (HLAs). HLAs are proteins found on the cell wall that trigger immune response. His current stock is from just one donor but hopes to get to five to ten donors by March 2018.
According to Masayo Takahashi, one of the team doctors, it is too early to declare success in the donated iPS Cell transplant until all five procedures are finished. The doctors are positive that banked iPS Cells will soon be readily available and much cheaper than regular transplant procedures.
A Stroke occurs when the flow of oxygen-rich blood to a portion of the brain is blocked. Without oxygen, brain cells start to die after a few minutes. Sudden bleeding in the brain also can cause a Stroke if it damages brain cells. Stroke is a leading cause of long-term disability and the leading preventable cause of disability.
Different Types of Stroke
Strokes are categorised into two major categories: Ischemic and Hemorrhagic. Ischemic Strokes are caused by interruption of blood supply, while Hemorrhagic Stroke s are the ones which result from rupture of a blood vessel or an abnormal vascular structure.
What is Stroke ? Stroke is a disease that affects the arteries leading to and within the brain.
If brain cells die or are damaged because of a Stroke, symptoms occur in the parts of the body that these brain cells control. Examples of Stroke symptoms include paralysis or numbness, sudden weakness and paralysis. Some people may even develop eye problems and slurry or distorted speech.
Stem Cell Treatment for Stroke
Stem cells have the capability to self-renew meaning that they can reproduce themselves many times over. Stem cells are found in the bone marrow, the lungs, the brain among other organs in the body. These cells are our repair kits as they regenerate cells damaged by disease and injury.
It has always been believed that if a Stroke causes damage to the brain, that damage was irreversible. With technological breakthrough, the re-growth of brain cells is now possible and is offering new hope to Stroke victims.
The patient’s own Stem Cells are harvested, activated and put back in the body. These pluripotent Stem Cells then differentiate and migrate to the brain and begin to re-grow as brain cells.
In the clinical trial carried out at the Department of Neurology at the Medical College of Georgiathe treatment using Stem Cells did not cause any strong immune reactions in recipients, even those who were unrelated to the donor cells.
The patients in the test showed remarkable improvement in their motor functions, and in the other symptoms associated with a sustained Stroke.
The researchers reported that the treatment may not significantly improve the recovery of patients within the first three months. It does however provide evidence that giving the therapy early within the first 36 hours after Stroke symptoms occur may enhance physical recovery. This treatment reduces the high risk of infections and these benefits continue to benefit the patient months down the line after its administration.
Adult Stem Cells are scalable and require no tissue typing make it a potentially widely and rapidly available therapy for Stroke patients. These cells are harvested, isolated treated and banked, ensuring that they are available when needed. One donor of these cells may provide hundreds of thousands of doses to patients.
Stem Cell Research has come a long way, and in future it is likely that Stem Cell Therapy in the treatment of Stroke patients will be used in addition to other proven treatments once they have been approved for general use in medicine.
If you would like anymore information about the use of stem cells in Stroke treatment, don’t hesitate to contact us.
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