Navigation Links
Master Regulatory Gene of Epithelial Stem Cells Identified

The skin’s ability to replace the tissue it sloughs off is controlled by a variety of genes. A new study from Harvard Medical School published// in the May 4 issue of Cell, however, identifies a "master regulator" of this regeneration process not only for skin, but for many epithelial tissues including breast, prostate, and urogenital tract. This master regulator of epithelial stem cells turns out to be the p63 gene, a close relative to the well-known tumor-suppressing p53 gene. Without p63, mutant mice run out of the regenerative epithelial stem cells. The findings also have implications for cancers of the skin, breast and prostate, which are among the most common human malignancies.

The role of p63 in epithelial stem cells has been controversial. Some studies found that p63 maintains a steady pool of the regenerative cells, while other studies argued that p63 has more to do with causing the cells to differentiate into particular types of tissue. The study, which was lead by Frank McKeon, PhD, professor of cell biology at Harvard Medical School (HMS), shows that p63’s role in not in tissue differentiation but rather to impart "stemness" to the regenerative cells in these tissues.

"With the p63-lacking mice you get normal commitment and differentiation," says McKeon. "The defect is simply running out of stem cells. When you run out of stem cells, you run out of those tissues as we have seen with the mice lacking the p63 gene."

Having established that p63 was only important to the maintenance of stem cells, McKeon and his research team then used the epithelial stem cell cloning methods developed by Howard Green, MD, the George Higginson professor of cell biology at HMS, to show that p63’s key function was to provide the enhanced potential of stem cells to divide.

"The fact that p63 is essential for these epithelial stem cells, while other master regulators have been identified for blood stem cells and spermatocyte stem cells, suggests a fundamental requirement for tissue specificity of these regulators that we don’t understand," says McKeon. "Dissecting the genetic programs controlled by these regulators will tell us much about how stem cells function and how they go awry in cancer."


Related medicine news :

1. Protein acts as "Master Switch" that cuts off cells Cancer-Growth machinery
2. Master Switches Found for Adult Blood Stem Cells
3. Tumor Suppressor p53s Contradictory Regulatory System
4. Human Complexity Can Be Attributed To Regulatory Sequence
5. The Lancet Calls For Review Of Regulatory Process Of Drug Trials
6. Medtronic’s Insulin Pump Receives Regulatory Approva
7. Regulatory T-cells – Protector or Cause of Diseases
8. GMC Wrestles For Regulatory Powers
9. Regulatory Mechanism for Tumor Suppressor Protein Identified
10. Structure of Iron Regulatory Protein-RNA Complex Solved
11. Ramadoss Vows to Set Up Food Regulatory Body in India
Post Your Comments:

(Date:11/30/2015)... ... November 30, 2015 , ... Olympic Gold Medalists and Celebrity ... brands across various categories through traditional and social media marketing campaigns and other ... of Gold Medal Moms who can connect with today’s most important consumer: mothers. ...
(Date:11/30/2015)... ... December 01, 2015 , ... The ... a 2015-2016 inductee into its VIP Woman of the Year Circle. She is ... leading networking organization exclusively for professional women, boasting 850,000 members and over 200 ...
(Date:11/30/2015)... , ... November 30, 2015 , ... ... (Meso Foundation) released information for caregivers and held two webinars on topics of ... on demand free of charge at . , With a loved ...
(Date:11/30/2015)... ... November 30, 2015 , ... MOSI recently added two state-of-the-art augmented reality (AR) ... the Jurassic to their collection of interactive exhibits within the Kids In Charge! building. ... allow guests to get closer than ever to a range of animals as they ...
(Date:11/30/2015)... VA (PRWEB) , ... November 30, 2015 , ... ... mesothelioma-affected community across the United States to access life-saving information provided ... Malignant Mesothelioma will consist of three individual conferences in three major cities: ...
Breaking Medicine News(10 mins):
(Date:11/30/2015)... , Nov. 30, 2015  QT Vascular Ltd., ... and together with its subsidiaries, TriReme Medical LLC and ... company engaged in the design, assembly and distribution of ... vascular disease, is pleased to announce that a three-judge ... Court of Appeals for the Federal Circuit ("Federal Circuit") ...
(Date:11/30/2015)... 2015   Royal Philips  (NYSE: PHG ... Radiology Solutions, a fully integrated, consultative approach to ... data-driven practice management approaches that combine imaging systems, ... improve care delivery and reduce costs. Making its ... North America Annual Meeting (RSNA) in ...
(Date:11/30/2015)... -- Nautilus Medical Inc. today announced worldwide availability of ... ). The release of MatrixRay to the entire medical ... North America) in Chicago - ... --> --> MatrixRay is the ... studies worldwide via a peer-to-peer exchange network of physicians ...
Breaking Medicine Technology: