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Moffitt Cancer Center researchers find acidic pH microenvironments in tumors aid tumor cell survival
Date:9/5/2012

atmospheric oxygen levels and they found that the cell's stress response could lead to chronic autophagy even when nutrients and oxygen were in adequate supply.

"We found that cells subjected to transient and chronic low pH growth conditions demonstrate elevated markers for autophagy and are dependent on this process for prolonged survival in acidic environments," explained Jonathan W. Wojtkowiak, lead author of the study and postdoctoral fellow at Moffitt. "A hallmark of cancer is the ability of cancer cells to evade apoptosis. Autophagy supports this by playing a tumor promoter and survival role under certain circumstances during different stages of tumorogenesis."

Their study demonstrated the importance of autophagy in low pH-adapted breast and pancreatic cancer cell lines and the dependence of these cells on autophagy for survival to acidic tumor microenvironment. According to the researchers, they identified a potential therapeutic strategy of using an autophagy inhibitor, one that does not affect cells under neutral conditions.


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Contact: Kim Polacek
kim.polacek@moffitt.org
813-745-7408
H. Lee Moffitt Cancer Center & Research Institute
Source:Eurekalert

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