Abstract
During the tumorigenesis, cancer cells are frequently exposed to metabolic stress which is derived from altered cancer cell metabolism as well as unfavorable tumor microenvironment, such as hypoxia and glucose deprivation. Cancer cells need to respond to these stress stimuli properly through inducing cellular stress responses, such as unfolded protein response and autophagy, for cell survival. Therefore, modulation of these stress responses has been investigated as an alternative anticancer strategy, although their therapeutic clinical roles remain to be determined. In this review, we will discuss the cellular stress responses in cancer cells, the alternative anticancer strategy targeting unfolded protein response and/or autophagy, and the role of phytochemicals, which include resveratrol, genistein, curcumin, epigallocatechin-3-gallate and quercetin, in modulating the cellular stress responses.
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