Cancer therapy shows promise for psoriasis treatment

ScienceDaily | 5/31/2017 | Staff
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They have shown that HDAC3 inhibitors are particularly adept at increasing expression of aquaporin-3, or AQP3, a channel that transports glycerin, a natural alcohol and water attractor, which helps skin look better and aids healthy production and maturation of high-turnover skin cells.

"We've found that HDAC3 normally inhibits expression of AQP3 and we think we can use this knowledge to treat patients with psoriasis," said Dr. Vivek Choudhary, molecular biologist and physiologist in the Department of Physiology at the Medical College of Georgia at Augusta University.

MCG - Scientists - AQP3 - Levels - Psoriasis

MCG scientists knew that AQP3 levels were lower in psoriasis than in healthy skin, said Choudhary, corresponding author of the study in the Journal of Investigative Dermatology. The protein helps skin cells proliferate, differentiate into the right kind of cells and get to the right location in the body. It also aids the skin's hydration, wound recovery and elasticity. Histone deacetylase, which they found suppresses AQP3, helps regulate gene expression and protein function.

Since the immune system is believed to play a key role in psoriasis, many current treatments generally suppress the immune response, which increases the risk of infections, even cancer. MCG scientists hope they can one day instead directly enhance the presence of AQP3 or maybe its key cargo glycerin.

Psoriasis - Skin - Disorders - Patches - Elbows

Psoriasis is one of the most common skin disorders, with red, flaky patches most often erupting on the elbows, knees, scalp and back, said Dr. Wendy B. Bollag, cell physiologist in the MCG Department of Physiology and the study's senior author.

Like cancer, inflammation and excessive proliferation of cells are a psoriasis hallmark. That common ground and other emerging clues got the scientists thinking about the treatment potential of HDAC inhibitors. But first they had to establish a relationship.

HDAC - Inhibitor - Skin - Cells - Keratinocytes

When they introduced a broad-acting HDAC inhibitor to normal skin cells, or keratinocytes, -- both mouse and human --...
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