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Stem Cell Therapy - Obat segala penyakit
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Stem Cell Therapy: Non-Surgical Treatment for Neck Pain Whiplash
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Purtier Placenta Stem Cell Therapy Presented By Dr. Chen
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Stem Cell Therapy: Non-Surgical Treatment for Neck Pain Whiplash
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Stem Cell Therapy: Non-Surgical Treatment for Neck Pain & Whiplash - Video
PUBLIC RELEASE DATE:
29-Jan-2014
Contact: Shaun Mason smason@mednet.ucla.edu 310-206-2805 University of California - Los Angeles
Scientists from UCLA's Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research were today awarded grants totaling more than $3.5 million by California's stem cell agency for their ongoing efforts to advance revolutionary stem cell science in medicine.
Recipients of the awards from the California Institute of Renerative Medicine (CIRM) included Lili Yang ($614,400), who researches how stem cells become rare immune cells; Denis Evseenko ($1,146,468), who is studying the biological niche in which stem cells grow into cartilage; Thomas Otis and Bennet Novitch ($1,148,758), who are using new techniques to study communication between nerve and muscle cells in spinal muscular atrophy; and Samantha Butler ($598,367), who is investigating the molecular elements that drive stem cells to become the neurons in charge of our sense of touch.
"These basic biology grants form the foundation of the revolutionary advances we are seeing in stem cell science," said Dr. Owen Witte, professor and director of the Broad Stem Cell Research Center. "Every cellular therapy that reaches patients must begin in the laboratory with ideas and experiments that will lead us to revolutionize medicine and ultimately improve human life. That makes these awards invaluable to our research effort."
The awards are part of CIRM's Basic Biology V grant program, which fosters cutting-edge research on significant unresolved issues in human stem cell biology, with a focus on unravelling the key mechanisms that determine how stem cells decide which cells they will become. By learning how such mechanisms work, scientists can develop therapies that drive stem cells to regenerate or replace damaged or diseased tissue.
Lili Yang: Tracking special immune cells
The various cells that make up human blood all arise from hematopoietic stem cells. These include special white blood cells called T cells, the "foot soldiers" of the immune system that attack bacteria, viruses and other disease-causing invaders. Among these T cells is a smaller group, a kind of "special forces" unit known as invariant natural killer T cells, or iNKT cells, which have a remarkable capacity to mount immediate and powerful responses to disease when activated and are believed to be important to the immune system's regulation of infections, allergies, cancer and autoimmune diseases such as Type I diabetes and multiple sclerosis.
The iNKT cells develop in small numbers in the blood generally accounting for less than 1 percent of blood cells but can differ greatly in numbers among individuals. Very little is known about how blood stem cells produce iNKT cells.
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Stem cell agency's grants to UCLA help set stage for revolutionary medicine
PUBLIC RELEASE DATE:
30-Jan-2014
Contact: Bill Hathaway william.hathaway@yale.edu 203-432-1322 Yale University
A fundamental axiom of biology used to be that cell fate is a one-way street once a cell commits to becoming muscle, skin, or blood it always remains muscle, skin, or blood cell. That belief was upended in the past decade when a Japanese scientist introduced four simple factors into skin cells and returned them to an embryonic-like state, capable of becoming almost any cell type in the body.
Hopeful of revolutionary medical therapies using a patient's own cells, scientists rushed to capitalize on the discovery by 2012 Nobel Laureate Shinya Yamanaka. However, the process has remained slow and inefficient, and scientists have had a difficult time discovering a genetic explanation of why this should be.
In the Jan. 30 issue of the journal Cell, Yale School of Medicine researchers identified a major obstacle to converting cells back to their youthful state the speed of the cell cycle, or the time required for a cell to divide.
When the cell cycle accelerates to a certain speed, the barriers that keep a cell's fate on one path diminish. In such a state, cells are easily persuaded to change their identity and become pluripotent, or capable of becoming multiple cell types
"One analogy may be that when temperature increases to sufficient degrees, even a very hard piece of steel can be malleable so that you can give it a new shape easily," said Shangqin Guo, assistant professor of cell biology at the Yale Stem Cell Center and lead author of the paper. "Once cells are cycling extremely fast, they do not seem to face the same barriers to becoming pluripotent."
Guo's team studied blood-forming cells, which when dividing undergo specific changes in their cell cycle to produce new blood cells. Blood-forming progenitor cells normally produce only new blood cells. However, the introduction of Yamanaka factors sometimes but not always help these blood-forming cells become other types of cells. The new report finds that after this treatment blood-forming cells tend to become pluripotent when the cell cycle is completed in eight hours or less, an unusual speed for adult cells. Cells that cycle more slowly remain blood cells.
"This discovery changes the way people think about how to change cell fate and reveals that a basic 'house-keeping' function of a cell, such as its cell cycle length, can actually have a major impact on switching the fate of a cell," said Haifan Lin, director of the Yale Stem Cell Center.
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Cell cycle speed is key to making aging cells young again
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Newswise Scientists from UCLAs Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research have received new awards from the California Institute of Regenerative Medicine (CIRM), the state stem cell research agency, that will forward revolutionary stem cell science in medicine.
Recipients included Dr. Lili Yang, assistant professor of microbiology, immunology and molecular genetics who received $614,400 for her project to develop a novel system for studying how stem cells become rare immune cells; Dr. Denis Evseenko, assistant professor of orthopedic surgery, who received $1,146,468 for his project to identify the elements of the biological niche in which stem cells grow most efficiently into articular cartilage cells; Dr. Thomas Otis, professor and chair of neurobiology and Dr. Ben Novitch, assistant professor of neurobiology, who received $1,148,758 for their project using new light-based optigenetic techniques to study the communication between nerve and muscle cells in spinal muscular atrophy, an inherited degenerative neuromuscular disease in children; and Dr. Samantha Butler, assistant professor of neurobiology, received $598,367 for her project on discovering which molecular elements drive stem cells to become the neurons, or nerve cells, in charge of our sense of touch.
These basic biology grants form the foundation of the revolutionary advances we are seeing in stem cell science, said Dr. Owen Witte, professor and director of the Broad Stem Cell Research Center, and every cellular therapy that reaches patients must begin in the laboratory with ideas and experiments that will lead us to revolutionize medicine and ultimately improve human life. That makes these awards invaluable to our research effort.
The awards were part of CIRMs Basic Biology V grant program, carrying on the initiative to foster cutting-edge research on significant unresolved issues in human stem cell biology. The emphasis of this research is on unravelling the secrets of key mechanisms that determine how stem cells, which can become any cell in the body, differentiate, or decide which cell they become. By learning how these mechanisms work, scientists can then create therapies that drive the stem cells to regenerate or replace damaged or diseased tissue.
Using A New Method to Track Special Immune Cells All the different cells that make up the blood come from hematopoietic or blood stem cells. These include special white blood cells called T cells, which serve as the foot soldiers of the immune system, attacking bacteria, viruses and other invaders that cause diseases.
Among the T cells is a smaller group of cells called invariant natural killer T (iNKT) cells, which have a remarkable capacity to mount immediate and powerful responses to disease when activated, a small special forces unit among the foot soldiers, and are believed to be important to immune system regulation of infections, allergies, cancer and autoimmune diseases such as Type I diabetes and multiple sclerosis.
The iNKT cells develop in small numbers in the blood, usually less than 1 percent of all the blood cells, and can differ greatly in numbers between individuals. Very little is known about how the blood stem cells produce iNKT cells.
Dr. Lili Yangs project will develop a novel model system to genetically program human blood stem cells to become iNKT cells. Dr. Yang and her colleagues will track the differentiation of human blood stem cells into iNKT cells providing a pathway to answer many critical questions about iNKT cell development.
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Stem Cell Agency Helps Set the Stage for Revolutionary Medicine
(CNN) We run too hard, we fall down, we're sick - all of this puts stress on the cells in our bodies. But in what's being called a breakthrough in regenerative medicine, researchers have found a way to make stem cells by purposely putting mature cells under stress.
Two new studies published Wednesday in the journal Nature describe a method of taking mature cells from mice and turning them into embryonic-like stem cells, which can be coaxed into becoming any other kind of cell possible. One method effectively boils down to this: Put the cells in an acidic environment.
"I think the process we've described mimics Mother Nature," said Dr. Charles Vacanti, director of the laboratory for Tissue Engineering and Regenerative Medicine at Brigham & Women's Hospital in Boston and senior author on one of the studies. "It's a natural process that cells normally respond to."
Both studies represent a new step in the thriving science of stem cell research, which seeks to develop therapies to repair bodily damage and cure disease by being able to insert cells that can grow into whatever tissues or organs are needed. If you take an organ that's functioning at 10 percent of normal and bring it up to 25 percent functionality, that could greatly reduce the likelihood of fatality in that particular disease, Vacanti said.
This method by Vacanti and his colleagues "is truly the simplest, cheapest, fastest method ever achieved for reprogramming [cells]," said Jeff Karp, associate professor of medicine at the Brigham & Women's Hospital and principal faculty member at the Harvard Stem Cell Institute. He was not involved in the study.
Before the technique described in Nature, the leading candidates for creating stem cells artificially were those derived from embryos and stem cells from adult cells that require the insertion of DNA to become reprogrammable.
Stem cells are created the natural way every time an egg that is fertilized begins to divide. During the first four to five days of cell division, so-called pluripotent stem cells develop. They have the ability to turn into any cell in the body. Removing stem cells from the embryo destroys it, which is why this type of research is controversial.
Researchers have also developed a method of producing embryonic-like stem cells by taking a skin cell from a patient, for example, and adding a few bits of foreign DNA to reprogram the skin cell to become like an embryo and produce pluripotent cells, too. However, these cells are usually used for research because researchers do not want to give patients cells with extra DNA.
The new method does not involve the destruction of embryos or inserting new genetic material into cells, Vacanti said. It also avoids the problem of rejection: The body may reject stem cells that came from other people, but this method uses an individual's own mature cells.
"It was really surprising to see that such a remarkable transformation could be triggered simply by stimuli from outside of the cell," said Haruko Obokata of the Riken Center for Developmental Biology in Japan in a news conference this week.
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New breakthrough in stem cell research
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Stem Cells Medical Applications of Biotechnology
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The revolutionary discovery that any cell can be rewound to a pre-embryonic state remarkably easily could usher in new therapies and cloning techniques
A LITTLE stress is all it took to make new life from old. Adult cells have been given the potential to turn into any type of body tissue just by tweaking their environment. This simple change alone promises to revolutionise stem cell medicine.
Yet New Scientist has also learned that this technique may have already been used to make a clone. "The implication is that you can very easily, from a drop of blood and simple techniques, create a perfect identical twin," says Charles Vacanti at Harvard Medical School, co-leader of the team involved.
Details were still emerging as New Scientist went to press, but the principles of the new technique were outlined in mice in work published this week. The implications are huge, and have far-reaching applications in regenerative medicine, cancer treatment and human cloning.
In the first few days after conception, an embryo consists of a bundle of cells that are pluripotent, which means they can develop into all cell types in the body. These embryonic stem cells have great potential for replacing tissue that is damaged or diseased but, as their use involves destroying an embryo, they have sparked much controversy.
To avoid this, in 2006 Shinya Yamanaka at Kyoto University, Japan, and colleagues worked out how to reprogram adult human cells into what they called induced pluripotent stem cells (iPSCs). They did this by introducing four genes that are normally found in pluripotent cells, using a harmless virus.
The breakthrough was hailed as a milestone of regenerative medicine the ability to produce any cell type without destroying a human embryo. It won Yamanaka and his colleague John Gurdon at the University of Cambridge a Nobel prize in 2012. But turning these stem cells into therapies has been slow because there is a risk that the new genes can switch on others that cause cancer.
Now, Vacanti, along with Haruko Obokata at the Riken Center for Developmental Biology in Kobe, Japan, and colleagues have discovered a different way to rewind adult cells without touching the DNA. The method is striking for its simplicity: all you need to do is place the cells in a stressful situation, such as an acidic environment.
The idea that this might work comes from a phenomenon seen in the plant kingdom, whereby drastic environmental stress can change an ordinary cell into an immature one from which a whole new plant can arise. For example, the presence of a specific hormone has been shown to transform a single adult carrot cell into a new plant. Some adult cells in reptiles and birds are also known to have the ability to do this.
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Stem cell power unleashed after 30 minute dip in acid