Navigation Links
Temperature-sensing protein linked to skin cancer, hirsutism
Date:4/15/2010

ANN ARBOR, Mich.---New findings about a temperature sensor in the skin could lead to novel approaches to controlling excess hair growth and treating skin cancers.

The common denominator that unites these seemingly unrelated processes is a versatile protein called TRPV3. The new research shows that in addition to serving as a temperature sensor, the protein is important for proper hair growth and skin health. The work, by University of Michigan cell biologist Haoxing Xu and colleagues, is described in a paper published in the April 16 issue of the journal Cell.

Found mainly in cells called keratinocytes in the outer layer of skin, TRPV3 functions as a calcium channel---a gateway that, when activated, allows calcium to pass through and deliver signals that stimulate processes such as muscle contraction, release of hormones or firing of neurons.

Some years ago, Xu identified TRPV3 and found that it is activated by warm temperatures and certain spices such as oregano. "Those are its sensory functions, but I wanted to know if it also plays a role in the basic biology of keratinocytes," said Xu. To get at that question, Xu's team created "knockout" mice, which lacked TRPV3.

The TRPV3-deficient mice had peculiar, wavy hair, and the outermost layer of their skin, which normally forms a barrier against germs and poisonous substances, was thinner than it should be. This was interesting, because the same two abnormalities, wavy hair and a thin epidermal barrier, are known to occur in mice with particular mutations. One such mutation affects a growth factor called TGF-alpha; the other affects a cell-surface receptor called EGFR, which is activated by TGF-alpha. Conversely, when TGF-alpha and EGFR are overactive, hairlessness and skin disorders, including skin cancer, may result.

The fact that the loss of TRPV3 produced the same effects as abnormalities in TGF-alpha and EGFR made Xu and colleagues curious about relationships among the three proteins. Their experiments revealed a chain of steps in which activation of TRPV3 leads to release of TGF-alpha, which activates EGFR. Activation of EGFR then feeds back to increase TRPV3 channel activity, forming a positive signaling loop.

Finding that the three proteins all work in concert is important, given the roles that TGF-alpha and EGFR play in skin diseases and abnormal hair growth, said Xu. "Many current anti-cancer drugs target EGFR, and our identification of TRPV3 as an essential regulator of EGFR places TRPV3 as a new drug target for cancer and other skin disorders. The additional connection to hair growth could also make TRPV3 useful in controlling that process."


'/>"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert

Related medicine news :

1. Protein May Help Control Weight
2. The assembly of protein strands into fibrils
3. Leukemia-related protein 16 and colorectal carcinoma
4. Caltech scientists uncover structure of key protein in common HIV subgroup
5. UD team develops new method for producing proteins critical to medical research
6. Proteins in unroasted coffee beans may become next-generation insecticides
7. Protein in Breast Tumors May Predict Chemo Response
8. Tumors Use a Protein to Hide From Immune System
9. Newly identified proteins critical to FA pathway DNA repair function
10. Proteins may point to alcohol use test
11. Blocking Protein May Stem COPD
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... Creek, Michigan (PRWEB) , ... June 26, 2016 , ... ... joined as sponsor of the 2016 Cereal Festival and World’s Longest Breakfast Table in ... in honor of the city’s history as home to some of the world’s leading ...
(Date:6/26/2016)... Carolina (PRWEB) , ... June 26, 2016 , ... ... of a new product that was developed to enhance the health of felines. The ... centuries. , The two main herbs in the PawPaws Cat Kidney Support ...
(Date:6/26/2016)... , ... June 26, 2016 , ... ... once they have been diagnosed with endometriosis. These women need a treatment plan ... require a comprehensive approach that can help for preservation of fertility and ultimately ...
(Date:6/25/2016)... TX (PRWEB) , ... June 25, 2016 , ... Austin ... of the American College of Mohs Surgery and to Dr. Russell Peckham for medical ... and highly effective treatment for skin cancer. The selective fellowship in Mohs Micrographic Surgery ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, FCPX ... Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms over ... Cut Pro X . Simply select a ProHand generator and drag it above media ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... OTTAWA, Ontario , June 27, 2016  VMS ... the Company,s Board will take whatever measures required to ... the Company,s stock which is currently listed on the ... S Wexler, Company Chairman and CEO, "We are seeing ... be difficult to understand, not only by the Company, ...
(Date:6/24/2016)... June 24, 2016  Collagen Matrix, Inc., ("Collagen ... and manufacturing of collagen and mineral based medical ... that Bill Messer has joined the ... further leverage the growing portfolio of oral surgery, ... Bill joins the Collagen Matrix executive team ...
(Date:6/24/2016)... DUBLIN , June 24, 2016 ... and Markets has announced the addition of the ... their offering. ... products and provides an updated review, including its applications ... covering the total market, which includes three main industries: ...
Breaking Medicine Technology: