Stem Cells News and Research

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Stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth. In addition, in many tissues they serve as a sort of internal repair system, dividing essentially without limit to replenish other cells as long as the person or animal is still alive. When a stem cell divides, each new cell has the potential either to remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell, a red blood cell, or a brain cell.

Existence of muscle-building stem cells points to regenerative therapies for muscular disease

A new report in the June 1 issue of the journal Cell, a publication of Cell Press, confirms the existence of some apparently uncommitted stem cells amongst cells responsible for generating the bulging biceps of body builders and the rippling abs of fitness buffs.

1 Jun 2007

Researchers engineer adult stem cells derived from human umbilical cord blood to produce insulin

The researchers announced their laboratory finding, which caps nearly four years of research, in the June 2007 issue of the medical journal Cell Proliferation, posted online this week.

28 May 2007

Study challenges conventional wisdom about cancer cells

A team of St. Jude investigators challenged conventional wisdom about the eye cancer retinoblastoma by using a mouse model that allowed them to study the tumors as they develop and grow.

27 May 2007

Stem cells may look malignant, not act it

Call it the cellular equivalent of big glasses, a funny nose and a fake mustache.

24 May 2007

New adult nerves have a deeper role than simply replacing dead ones

You may not be able to relive your youth, but part of your brain can. Johns Hopkins researchers have found that newly made nerves in an adult brain's learning center experience a one-month period when they are just as active as the nerves in a developing child.

24 May 2007

Breakthrough in understanding how cancers spread

The University of Manchester study used embryonic stem (ES) cells to investigate how some tumours are able to migrate to other parts of the body, which makes the treatment of cancer much more difficult.

From The University of Manchester 24 May 2007

Muscle stem cells treat urinary incontinence

Women with stress urinary incontinence (SUI) treated using muscle-derived stem cell injections to strengthen their sphincter muscles experience long-term improvements in their condition, according to a study led by researchers at the University of Pittsburgh School of Medicine and Sunnybrook Health Sciences Centre in Toronto.

22 May 2007

Artificially created bone tissue

As the nation ages, an estimated 44 million Americans, including at least half of those ages 50 and older, are at risk for osteoporosis, making their bones fragile and vulnerable to serious fractures.

22 May 2007

Glucose plays a key role in enabling healthy beta cells

A key aspect of how embryos create the cells which secrete insulin is revealed in a new study published in the Journal of Biological Chemistry.

18 May 2007

Mammals have the power to regenerate

Researchers at the University of Pennsylvania School of Medicine have found that hair follicles in adult mice regenerate by re-awakening genes once active only in developing embryos.

18 May 2007

Researchers identify the cancer stem cell for rhabdomyosarcoma

As published in the June 1 issue of Genes & Development, Dr. Leonard Zon (Children's Hospital Boston) and colleagues have identified the cancer stem cell for rhabdomyosarcoma, the most common soft-tissue sarcoma of childhood.

17 May 2007

Project aims to develop stem cell lines that genetically match human patients

These lines would allow scientists to better study conditions ranging from diabetes to Parkinson's disease, and they would provide the basis for potential patient-specific stem cell treatments.

17 May 2007

Cancer cells can be killed by a new cancer drug that is triggered by a laser light

Their paper describes how these new photosensitizer drugs can only be activated by light once they have been localized in the target tumour cells. For the first time Zheng and Wilson have demonstrated that tumour cells can be selectively attacked using a PDT.

17 May 2007

Hair loss may be reversible

Scientists who have helped create new hair cells on the skin of mice say hair loss may be reversible.

16 May 2007

Cells that cause Ewing's sarcoma identified

Inserm researchers at the Institut Curie have identified the cells that cause Ewing’s sarcoma.

16 May 2007

Adult bone marrow stem cells may help cure certain genetic eye diseases

Scientists have completed a study using mice which showed that bone marrow stem cells can switch roles and produce keratocan, a natural protein involved in the growth of the cornea, the transparent, outer layer of the eyeball.

11 May 2007

It is highly unlikely that older women generate new eggs

Tilly reported the discovery of stem cells capable of migrating from bone marrow to mouse ovaries and generating new eggs there. The research fueled hopes that a new treatment - such as bone marrow transplantation - might one day help older women regain their fertility.

9 May 2007

Researchers create agent that protects cells from the lethal effects of radiation

No drugs exist to protect the public from the high levels of radiation that could be released by a "dirty" bomb or nuclear explosion.

9 May 2007

Adult stem cells play no role in insulin production

Diabetes researchers, investigating how the body supplies itself with insulin, discovered to their surprise that adult stem cells, which they expected to play a crucial role in the process, were nowhere to be found.

8 May 2007

Heart-assist devices may help some end-stage heart failure patients avoid transplant

Implanted pumps improved heart function enough in a small percentage of patients awaiting a heart transplant that they were able to leave the hospital without a pump and without a new heart, according to a study in Circulation: Journal of the American Heart Association.

8 May 2007