Tag Archives: Cell biology

Stem Cell Therapy is Reality

The mesenchymal stem cells found in the bone marrow can give rise to bone, fat, and muscle tissue, and have been used in hundreds of clinical trials for tissue repair.

Unfortunately, the results of these trials have been underwhelming, the main problem being that these stem cells do not stick around in the body long enough to benefit the patient.

Researchers have now found that transplanting mesenchymal stem cells along with blood vessel-forming cells naturally found in circulation improves results.

Two Proteins let Skin Cells to return to life

Never mind facial masks and exfoliating scrubs, skin takes care of itself. Stem cells located within the skin actively generate differentiating cells that can ultimately form either the body surface or the hairs that emanate from it. In addition, these stem cells are able to replenish themselves, continually rejuvenating skin and hair. Now, researchers at Rockefeller University have identified two proteins that enable these skin stem cells to undertake this continuous process of self-renewal.

The work, published in Nature Genetics, brings new details to the understanding of how stem cells maintain — and lose — their status as stem cells
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A New Role for Old Sox

Understanding the genetic underpinnings of the biology of stem cells is crucial for their use in disease research and treatment. Scientists have identified a variety of genetic factors that maintain self renewal properties in embryonic, fetal, and adult stem cells. But whether these cell types are controlled by the same or different molecules is a persisting question.

Recent work from HSCI Principal Faculty Konrad Hochedlinger, PhD, begins to crack that mystery. Sox2 is a gene whose expression is required for maintaining pluripotency in early embryonic cells and regulating tissue development in the fetal stage. But until now, Sox2 expression had
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Stem cells and you can forget diabetes

A team of researchers has brought the end of diabetes closer to reality by announcing a new breakthrough that could lead directly to a cure and not just a treatment for the disease.

The scientists discovered a protein that activates the maturation process in vitro, overcoming this longstanding obstacle in diabetes therapy development.

“In a dish, with this one switch, it’s possible to produce a functional human beta cell that’s responding almost as well as the natural thing,” says senior author Ronald Evans of the Salk Institute. “This has been a major blockade, and overcoming it has been a major challenge
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Stem cell trial on horses

Veterinarians in Wichita conducted the first phase of a stem cell trial today in Wichita. Their goal is to treat laminitis, a disease in horses hoofs. They will do this using stem cells taken from the horses using liposuction. Laminitis is painful and even crippling for horses.

“Those horses usually digress over time to the point where they finally lose their life,” Dr. Preston Hickman said.

The trial is 90 days. The ten horses participating will have 3 stem cell injections over the three months.