Insight into tumor-suppressive and tumor-promoting effects of cellular senescence

Medical Xpress | February 19, 2019

Researchers at The Wistar Institute have described a novel role of nicotinamide adenine dinucleotide (NAD+) metabolism in the ability of senescent cells to release tumor-promoting molecules. This study, published online in Nature Cell Biology, also cautions that NAD+-augmenting supplements, currently in development for their anti-aging effects as nutraceuticals, should be administered with precision given their potential pro-tumorigenic side effects.
Cellular senescence is a process in which cells irreversibly stop dividing and represents a potent tumor suppressive mechanism. At the same time, senescent cells also produce a variety of inflammatory soluble molecules that can promote tumor growth, known by the name of senescence-associated secretory phenotype (SASP). The laboratory of Rugang Zhang, Ph.D., deputy director of The Wistar Institute Cancer Center, professor and co-program leader of the Gene Expression and Regulation Program, investigated the role of a family of proteins called HMGAs in cellular senescence and the SASP.

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Department of Biotechnology, Chemistry and Pharmacy - english version

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Department of Biotechnology, Chemistry and Pharmacy - english version

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