HOME >> BIOLOGY >> NEWS
First demonstration of new hair follicle generation in an animal model

PHILADELPHIA -- Researchers at the University of Pennsylvania School of Medicine have found that hair follicles in adult mice regenerate by re-awakening genes once active only in developing embryos. These findings provide unequivocal evidence for the first time that, like other animals such as newts and salamanders, mammals have the power to regenerate. These findings are published in the May 17 issue of Nature.

A better understanding of this process could lead to novel treatments for hair loss, other skin and hair disorders, and wounds.

We showed that wound healing triggered an embryonic state in the skin which made it receptive to receiving instructions from wnt proteins, says senior author George Cotsarelis, MD, Associate Professor of Dermatology. The wnts are a network of proteins implicated in hair-follicle development.

Researchers previously believed that adult mammal skin could not regenerate hair follicles. In fact, investigators generally believe that mammals had essentially no true regenerative qualities. (The liver can regenerate large portions, but it is not de novo regeneration; some of the original liver has to remain so that it can regenerate.)

In this study, researchers found that wound healing in a mouse model created an embryonic window of opportunity. Dormant embryonic molecular pathways were awakened, sending stem cells to the area of injury. Unexpectedly, the regenerated hair follicles originated from non-hair-follicle stem cells.

Weve found that we can influence wound healing with wnts or other proteins that allow the skin to heal in a way that has less scarring and includes all the normal structures of the skin, such as hair follicles and oil glands, rather than just a scar, explains Cotsarelis.

By introducing more wnt proteins to the wound, the researchers found that they could take advantage of the embryonic genes to promote hair-follicle growth, thus making skin regenerate inst
'"/>

Contact: Karen Kreeger
karen.kreeger@uphs.upenn.edu
215-349-5658
University of Pennsylvania School of Medicine
16-May-2007


Page: 1 2

Related biology news :

1. First case of successful ovarian tissue transplantation between two, nonidentical sisters
2. First new multiple sclerosis gene found in 30 years
3. First genome-wide study of infectious disease opens new avenues for HIV treatment, vaccines
4. First all-African produced genetically engineered maize is resistant to maize streak virus
5. First baby is born after oocytes were matured in the lab and frozen
6. First confirmed common genetic risk factors for breast cancer
7. First research to show that diabetes damages DNA in mens sperm and may affect fertility
8. First demonstration of muscle restoration in an animal model of Duchenne muscular dystrophy
9. First systematic study of Chinas one-child policy reveals complexity, effectiveness
10. First international conference on self-healing materials
11. First impressions: Computer model behaves like humans on visual categorization task

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/13/2017)... PUNE, India , April 13, 2017 According ... Identity Proofing, Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication ... by MarketsandMarkets™, the IAM Market is expected to grow from USD 14.30 ... Annual Growth Rate (CAGR) of 17.3%. ... ...
(Date:4/11/2017)... 11, 2017 Research and Markets has announced ... report to their offering. ... global eye tracking market to grow at a CAGR of 30.37% ... Tracking Market 2017-2021, has been prepared based on an in-depth market ... landscape and its growth prospects over the coming years. The report ...
(Date:4/11/2017)... NXT-ID, Inc. (NASDAQ:   NXTD ) ... appointment of independent Directors Mr. Robin D. Richards ... Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive ... their guidance and benefiting from their considerable expertise as we ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... 11, 2017 , ... Disappearing forests and increased emissions are the main causes ... each year. Especially those living in larger cities are affected by air pollution related ... the most pollution-affected countries globally - decided to take action. , “I knew I ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... program has won a US2020 STEM Mentoring Award. Representatives of the FirstHand program ... in Volunteer Experience from US2020. , US2020’s mission is to change the trajectory ...
(Date:10/10/2017)... ... October 10, 2017 , ... The Pittcon Program Committee is ... honoring scientists who have made outstanding contributions to analytical chemistry and applied spectroscopy. ... world’s leading conference and exposition for laboratory science, which will be held February ...
(Date:10/9/2017)... ... October 09, 2017 , ... ... the medical journal, Epilepsia, Brain Sentinel’s SPEAC® System which uses the surface ... detecting generalized tonic-clonic seizures (GTCS) using surface electromyography (sEMG). The prospective multicenter ...
Breaking Biology Technology:
Cached News: