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Wealth of genomic hotspots discovered in embryonic stem cells
Date:6/13/2008

In a paper published in Cell on June 13, 2008, Singapore scientists at the Genome Institute of Singapore (GIS) and the National University of Singapore (NUS) unveil an atlas that showing the location of "genomic hotspots" of essential protein "switches" (transcription factors) that are critical for maintaining the embryonic stem (ES) cell state.

Using advanced high throughput sequencing technology, the scientists discovered over 3,000 hotspots. These findings could improve understanding of the unique properties of stem cells that enable them to maintain their intriguing ability to grow and differentiate to virtually any cell type.

"This is the first time such a large scale study has been conducted in Singapore and obtaining such groundbreaking results has caused much excitement," said Wei Chia Lin, Ph.D., Senior Group Leader at GIS. "This blueprint that we obtained is like a treasure map, pointing us to specific sites where we can further study how these switches interact within the cell. Hopefully, this will eventually allow us unlock the secrets of stem cells."

Ng Huck Hui, Ph.D., also a Senior Group Leader at GIS, added, "we think that these 'stemness' hotspots are the most critical points in the genetic blueprint of ES cells. By targeting these hotspots, we may be able to reconnect the wiring in non-stem cells and jump-start the stem cell program in them. This can potentially create an inexhaustible source of clinically useful cells for regenerative medicine or cell based therapies in the future." The team has already started work to investigate further into this area of research.

"Using cutting edge sequencing technology, scientists from the GIS and NUS have identified hotspots in embryonic stem cells," said Prof. Lee Eng Hin, Executive Director of A*STAR's Biomedical Research Council. "These are important hubs of the genome of embryonic stem cells. This piece of work illustrates how scientists from d
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Contact: Cathy Yarbrough
sciencematter@yahoo.com
858-243-1814
Agency for Science, Technology and Research (A*STAR), Singapore
Source:Eurekalert

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