Pluripotency News and Research

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Established human embryonic cell lines vary from newly derived stem cell lines

Established human embryonic cell lines, including those approved for federal research funding under former President George W. Bush, are different than newly derived human embryonic stem cell lines, according to a study by UCLA stem cell researchers.

2 Dec 2011

Human pluripotent stem cells rely heavily on glycolysis to drive their metabolic activities

Human pluripotent stem cells, which can develop into any cell type in the body, rely heavily on glycolysis, or sugar fermentation, to drive their metabolic activities.

16 Nov 2011

Study shows Sox2 expression in many adult stem cells

Investigators at the Massachusetts General Hospital (MGH) Center for Regenerative Medicine and the Harvard Stem Cell Institute (HSCI) have found that Sox2 - one of the transcription factors used in the conversion of adult stem cells into induced pluripotent stem cells (iPSCs) - is expressed in many adult tissues where it had not been previously observed.

7 Oct 2011

Researchers can reverse aging process for human adult stem cells

Researchers have shown they can reverse the aging process for human adult stem cells, which are responsible for helping old or damaged tissues regenerate.

21 Sep 2011

Novel solution for purifying stem cell mixtures

Stem cells show great potential to enable treatments for conditions such as spinal injuries or Lou Gehrig's disease, and also as research tools. One of the greatest problems slowing such work is that researchers have found major complications in purifying cell mixtures, for instance to remove stem cells that can cause tumors from cells developed for use in medical treatments.

9 Sep 2011

NIH approves BioTime's four GMP human embryonic stem cell lines

BioTime, Inc., a biotechnology company that develops and markets products in the field of regenerative medicine, today announced that four human embryonic stem (hES) cell lines: ESI-035, ESI-049, ESI-051 and ESI-053, developed by a BioTime subsidiary have been approved by the National Institutes of Health (NIH) for inclusion in the NIH Human Embryonic Stem Cell Registry.

20 Aug 2011

Human embryonic stem cell, iPS-derived progeny are similar and developmentally immature

Stem cell researchers at UCLA have discovered that three types of cells derived from human embryonic stem cells and induced pluripotent stem cells are similar to each other, but are much more developmentally immature than previously thought when compared to those same cell types taken directly from human tissue.

18 Aug 2011

Scientists convert human skin cells into forebrain neurons

Columbia University Medical Center researchers have for the first time directly converted human skin cells into functional forebrain neurons, without the need for stem cells of any kind.

5 Aug 2011

Study overturns long-accepted theories about fundamental aspect of tissue regeneration

Scientists have been wrong for 250 years about a fundamental aspect of tissue regeneration, according to a University of Dayton biologist who says his recent discovery is good news for humans.

14 Jul 2011

Induced pluripotent cells may make embryonic stem cells unnecessary

For nearly two decades, the medical world and the American public have grappled with the lightning-rod topic of stem cells, in particular the controversy surrounding cells from human embryos. But when researchers four years ago successfully "reprogrammed" adult body cells to become stem cells, some thought the ethical debate was nearly over. Those redirected cells, known as induced pluripotent cells, or iPS cells, show potential as therapy.

6 Jul 2011

Stem cell pluripotency depends on E-cadherin molecule

Researchers of the Max Delbr-ck Center for Molecular Medicine (MDC) Berlin-Buch have discovered what enables embryonic stem cells to differentiate into diverse cell types and thus to be pluripotent. This pluripotency depends on a specific molecule - E-cadherin - hitherto primarily known for its role in mediating cell-cell adhesion as a kind of "intracellular glue".

27 May 2011

GIS discovery could help generate stem cells more efficiently for biomedical applications

A team of scientists from Genome Institute of Singapore (GIS) of the Agency for Science, Technology and Research (A*STAR) have shown how proteins involved in controlling genes work together to carry out their functions in stem cells and demonstrated for the very first time, how they can change interaction partners to make other types of cells.

20 May 2011

Study provides evidence that adult planarians harbor pluripotent stem cells

A single adult cell from one of the most impressive masters of regeneration in the animal kingdom - the planarian - is all it takes to build a completely functional new worm, researchers have learned. The study provides the first hard evidence that adult planarians harbor pluripotent stem cells - cells capable of producing the diverse range of tissue types necessary to build a complete animal.

13 May 2011

Two new studies on cancer

Last year, a research team at the University of North Carolina at Chapel Hill discovered one way the protein Tet 1 helps stem cells keep their pluripotency-the unique ability to become any cell type in the body.

31 Mar 2011

New horse stem cell discovery aids in preclinical model development for human degenerative diseases

In a world first, pluripotent stem cells have been generated from horses by a team of researchers led by Dr. Andras Nagy at the Samuel Lunenfeld Research Institute of Mount Sinai Hospital and Dr. Lawrence Smith at the University of Montreal's Faculty of Veterinary Science.

28 Feb 2011

Skin cells for repairing cartilage injury

In this paper, Noriyuki Tsumaki and his team at the Osaka University Graduate School of Medicine, used fibroblasts isolated from adult mouse skin, and expressed proteins used to induce pluripotency along with a factor that promotes a chondrocyte fate.

11 Jan 2011

Researchers discover specific genetic abnormalities in hESC, iPSC lines

A multinational team of researchers led by stem cell scientists at the University of California, San Diego School of Medicine and Scripps Research Institute has documented specific genetic abnormalities that occur in human embryonic and induced pluripotent stem cell lines.

7 Jan 2011

Time magazine declares NYSCF member as 2010 "Person who Matters" for innovative stem cell research

The New York Stem Cell Foundation extends congratulations to Derrick Rossi, PhD, a member of the inaugural class of NYSCF-Robertson Investigators, who was named one of Time Magazine's 2010 "People Who Mattered" in the December 27, 2010 Person of the Year Issue.

22 Dec 2010

Research: Stem cell culture on soft substrate maintain homogeneous pluripotent colonies

In a paper published in the journal PLoS One, the researchers demonstrated that culturing mouse embryonic stem cells on a soft gel rather than on a hard plate or dish keeps them in their pluripotent state, a ground state with the ability to become any type of tissue.

16 Dec 2010

Stem cell biology offers great hope for eventual repair of body parts

Remarkable progress in understanding how stem cell biology works has been reported by a team of leading scientists, directed by experts at UC Santa Barbara. Their research has been published in the journal Cell Stem Cell.

13 Dec 2010