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by Melissa Stamm | Wednesday, Feb. 1, 2012, 4:29 PM
The protein transforming growth factor beta (TGF-beta) can act as either a tumor suppressor or a tumor promoter depending on the stage of cancer. Loss of TGF-beta’s tumor suppressor activity may play an important role in lung cancer progression.
Pran Datta, Ph.D., and colleagues previously showed that this loss of responsiveness to TGF-beta occurs mainly through loss of expression of the TGF-beta type II receptor (TbRII). However little is known about the mechanisms underlying this loss of expression – or how it might be restored.
In a recent study published in Neoplasia, Datta and colleagues identify several proteins/pathways involved in regulating TbRII expression in lung cancer cell lines, and that histone deacetylation – an “epigenetic” change that modulates gene expression – is involved in the loss of TbRII expression in lung cancer cells. Additionally, drugs called histone deacetylase inhibitors (HDIs) were shown to restore expression of TbRII, suggesting that these compounds – either alone or in combination with other agents – may hold potential in treating or slowing the progression of lung cancer.
Melissa Stamm, (615) 322-4747
Health and Medicine, Reporter, Research Aliquots, epigenetics, histone deacetylase, journal publication, lung cancer, NCI, Neoplasia, NIH, Pran Datta, Reporter Feb. 3 2012, surgery, TGF-beta, Veterans Administration
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