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47 results for Stem cells

Stem Cells, Changing Fast
Stem Cells, Changing Fast

https://www.weizmann-usa.org/news-media/feature-stories/stem-cells-changing-fast/

Aug 27, 2014... Stem cell research is one of the fastest-moving fields of science today, with new findings coming one after another. At the Weizmann Institute of Science, in just the past several months alone researchers have discovered important new information about how stem cells grow, differentiate, and can be reprogrammed. Such achievements are the outcome of scientific curiosity, ingenuity, and endurance, as well as support provided by farsighted donors.

TAGS: Biology, Stem cells

Weizmann Institute Scientists Dicover Key Player in Embryonic Muscle Development
Weizmann Institute Scientists Dicover Key Player in Embryonic Muscle Development

https://www.weizmann-usa.org/news-media/in-the-news/weizmann-institute-scientists-dicover-key-player-in-embryonic-muscle-development/

Apr 12, 2007... REHOVOT, ISRAEL—April 11, 2007—Muscle fibers are large cells that contain many nuclei. They begin, like all animal cells, as naive embryonic cells. These cells differentiate, producing intermediate cells called myoblasts that are now destined to become muscle. New myoblasts then seek out other myoblasts, and when they find each other, they stick together like best friends. In the final stage of muscle fiber development, the cell membranes of attached myoblasts open up and fuse together, forming one large, unified cell.

TAGS: Biology, Molecular genetics, Evolution, Stem cells, Proteins

Why Chemotherapy Fails
Why Chemotherapy Fails

https://www.weizmann-usa.org/news-media/news-releases/why-chemotherapy-fails/

May 29, 2012... REHOVOT, ISRAEL—May 29, 2012—The fight against cancer is not won in a single battle: long after a cancer has been beaten into remission, it can return. The reason for this is under debate, and much is unclear. New research led by Weizmann Institute scientists shows that, at least for one type of blood cancer, the source of cancer recurrence is in a set of cells that do not proliferate as quickly as regular cancer cells, and thus are able to survive chemotherapy. The findings, which appear in the journal Blood, have some important implications for the future of the war on cancer.

TAGS: Cancer, Cancer treatment, Stem cells, Blood

New Stem Cells Go Back Further
New Stem Cells Go Back Further

https://www.weizmann-usa.org/news-media/news-releases/new-stem-cells-go-back-further/

Oct 31, 2013... REHOVOT, ISRAEL—October 31, 2013—One of the obstacles to employing human embryonic stem cells (ESCs) for medical use lies in their very promise: They are born to rapidly differentiate into other cell types. Until now, scientists have not been able to efficiently keep ESCs in their pristine stem state. The alternative that has been proposed to ESCs — reprogrammed adult cells called induced pluripotent stem cells (iPSCs) — have similar limitations. Though these can differentiate into many different cell types, they retain signs of “priming” — commitment to specific cell lineages. A team at the Weizmann Institute of Science has now taken a large step toward removing that obstacle: They have created iPSCs that are completely “reset” to the earliest possible state, and have maintained them in that state. Among other things, this research may, in the future, pave the way toward the ability to grow transplant organs to order.

TAGS: Molecular genetics, Stem cells

Pig Stem Cells to Be Used to Grow Human Organs?
Pig Stem Cells to Be Used to Grow Human Organs?

https://www.weizmann-usa.org/news-media/in-the-news/pig-stem-cells-to-be-used-to-grow-human-organs/

Feb 15, 2005... It might be possible to transplant embryonic stem cells from pigs into humans to grow new organs, a new study shows.
The idea is not new. For more than two decades, scientists have pointed to the potential of embryonic pig tissues as a source for organ transplantation.
Studies in the past, however, have had little success when tissue has been taken relatively late in a pig embryo's development.

TAGS: Medicine, Immune system, Stem cells

Harnessing the Power of Stem Cells
Harnessing the Power of Stem Cells

https://www.weizmann-usa.org/news-media/feature-stories/harnessing-the-power-of-stem-cells/

Jul 29, 2014... The reason that embryonic stem cells are so appealing is their power: they can give rise to any cell type in the body. This means they could be used to repair damaged tissue, treat autoimmune diseases, and even grow transplant organs. However, in the U.S. and elsewhere, research using embryonic stem cells is severely limited due to religious or ethical issues, as well as limited availability. In order to advance the use of stem cells in medicine, another way must be found – and that’s why Dr. Jacob (Yaqub) Hanna of the Weizmann Institute of Science’s Department of Molecular Genetics is seeking to harness the potential of embryonic stem cells while avoiding the pitfalls.

TAGS: Culture, Medicine, Stem cells

New Hope for Kidney Patients
New Hope for Kidney Patients

https://www.weizmann-usa.org/news-media/feature-stories/new-hope-for-kidney-patients/

Sep 21, 2003... For people suffering from fatal diseases, such as leukemia or kidney failure, the scarcity of available transplants is often the cause of feelings of hopelessness. Thousands of people in the U.S. alone languish on waiting lists, tied to dialysis tubing, hoping for the transplant that may save their lives.
But if there were a way to make transplants immediately and widely available to all who need them, suddenly, it would be something everyone could afford, and something that would be accessible to all.

TAGS: Immune system, Stem cells, Diabetes, Leukemia

Science Tips, October 2012
Science Tips, October 2012

https://www.weizmann-usa.org/news-media/news-releases/science-tips-october-2012/

Oct 22, 2012... Not long ago, some unassuming bacteria found themselves at the center of a scientific controversy: a group claimed that these microorganisms, which live in an environment that is rich in the arsenic-based compound arsenate, could take up that arsenate and use it — instead of the phosphate on which all known life on Earth depends. The claim, since disproved, raised another question: How do organisms living with arsenate pick and choose the right substance?

TAGS: Biochemistry, Biology, Bacteria, Stem cells, Blood

Of Mice and Men: Researchers Find Differences in Cell Development
Of Mice and Men: Researchers Find Differences in Cell Development

https://www.weizmann-usa.org/news-media/in-the-news/of-mice-and-men-researchers-find-differences-in-cell-development/

Dec 24, 2014... An "embryoid" at the start of the appearance of Sox17 positive cells (green cells), which depict the birth of the human germ cell lineage. (Walfred Tang / University of Cambridge)
Scientists say they have discovered a key factor in the lab formation of human primordial germ cells – the precursors to egg and sperm – and that it differs significantly from experiments involving rodent cells.
In a paper published Wednesday in the journal Cell, researchers at the University of Cambridge in England and the Weizmann Institute of Science in Israel said their discovery raises questions about how much mouse experiments can tell us about early human cell development.

TAGS: Genetics, Biology, Stem cells

The Helen and Martin Kimmel Institute for Stem Cell Research
The Helen and Martin Kimmel Institute for Stem Cell Research

https://www.weizmann-usa.org/news-media/video-gallery/the-helen-and-martin-kimmel-institute-for-stem-cell-research/

Oct 13, 2010... On the occasion of establishing the Helen and Martin Kimmel Institute for Stem Cell Research, the couple – decades-long friends of the Weizmann Institute – talks about why they chose to invest in stem cell research, and why they chose to do so at Weizmann. They also share their first meeting, which was at a Weizmann event, and their love of science.

TAGS: Community, Philanthropy, Stem cells

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