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.

New understanding of how leukemia develops

In a collaborative study published Feb. 9, 2009, in the Proceedings of the National Academy of Sciences (PNAS), scientists performed a genome-wide expression analysis comparing highly enriched normal blood stem cells and leukemic stem cells, and identified several new pathways that have a key role in cancer development.

9 Feb 2009

Hair follicle stem cells may be key to organ regeneration

Most people consider hair as a purely cosmetic part of their lives. To others, it may help uncover one of nature's best-kept secrets: the body's ability to regenerate organs.

8 Feb 2009

Chemical mediator in blood found to also control breakdown of bone

A new study demonstrates that a chemical mediator in the blood that influences immune cell migration also plays a key role in maintaining the balance between the build-up and breakdown of bones in the body.

8 Feb 2009

Researchers discover "master gene" behind blood vessel development

In a first of its kind discovery, University of Minnesota researchers have identified the "master gene" behind blood vessel development.

5 Feb 2009

Source of cancer stem cells' resistance to radiation discovered

Much to the dismay of patients and physicians, cancer stem cells - tiny powerhouses that generate and maintain tumor growth in many types of cancers - are relatively resistant to the ionizing radiation often used as therapy for these conditions.

5 Feb 2009

Fat-free diet reduces liver fat in fat-free mice

Researchers at UT Southwestern Medical Center have uncovered crucial clues about a paradoxical disease in which patients with no body fat develop many of the health complications usually found in obese people.

3 Feb 2009

Animal eggs no source for embryonic stem cells

Stem cell researchers in the U.S. say that eggs from cows, rabbits and other animals are not a good source for creating embryonic stem cells.

3 Feb 2009

Scientists unlock secrets of gene regulatory networks

A quartet of studies by researchers at the California Institute of Technology (Caltech) highlight a special feature on gene regulatory networks recently published in the Proceedings of the National Academy of Sciences ( PNAS ).

3 Feb 2009

New chemical keeps stem cells young

Scientists at the Universities of Bath and Leeds have discovered a chemical that stops stem cells from turning into other cell types, allowing researchers to use these cells to develop new medical treatments more easily.

3 Feb 2009

Discovery of new class of non-protein coding genes in mammals with key functions

A research team at the Broad Institute of Harvard and MIT and Beth Israel Deaconess Medical Center has uncovered a vast new class of previously unrecognized mammalian genes that do not encode proteins, but instead function as long RNA molecules.

2 Feb 2009

Researchers disrupt biochemical system involved in cancer, degenerative disease

Screening a chemical library of 200,000 compounds, researchers at UT Southwestern Medical Center have identified two new classes that can be used to study and possibly manipulate a cellular pathway involved in many types of cancer and degenerative diseases.

2 Feb 2009

Advances in nanotechnology point to next generation of prostheses

The futuristic technology of the Six Million Dollar Man - specifically a part metal and part flesh human being - won't be exclusive to Hollywood anymore.

29 Jan 2009

Engineered virus targets and kills apparent cancer stem cells in neuroblastoma

After identifying an apparent population of cancer stem cells for neuroblastoma, researchers successfully used a reprogrammed herpes virus to block tumor formation in mice by targeting and killing the cells.

21 Jan 2009

Large DNA stretches, not single genes, shut off as cells mature

Experiments at Johns Hopkins have found that the gradual maturing of embryonic cells into cells as varied as brain, liver and immune system cells is apparently due to the shut off of several genes at once rather than in individual smatterings as previous studies have implied.

19 Jan 2009