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2017 ; 18
(9
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Targeting Tumor Adaption to Chronic Hypoxia: Implications for Drug Resistance,
and How It Can Be Overcome
#MMPMID28841148
Kim JY
; Lee JY
Int J Mol Sci
2017[Aug]; 18
(9
): ä PMID28841148
show ga
The rapid and uncontrolled proliferation of tumors limits the availability of
oxygen and nutrients supplied from the tumor vasculature, thus exposing them to
low oxygen environments. Thus, diminished oxygen availability, or hypoxia, is the
most common microenvironment feature of nearly all solid tumors. All living cells
have the ability to sense changes in oxygen tension and adapt to this stress to
preserve survival. Likewise, cancer cells adapt to chronic hypoxic stress via
several mechanisms, including promotion of angiogenic factor production,
metabolic shift to consume less oxygen, and reduction of apoptotic potential.
Adaptation of tumor cells to hypoxia is believed to be the main driver for
selection of more invasive and therapy-resistant cancer phenotypes. In this
review, we discuss molecular mechanisms by which tumor cells adapt to hypoxia,
with a specific focus on hypoxia-inducible factor (HIF) transcription factor. We
further discuss the current understandings on hypoxia-mediated drug resistance
and strategies to overcome it.
|Adaptation, Biological/*drug effects
[MESH]
|Animals
[MESH]
|Antineoplastic Agents/pharmacology/therapeutic use
[MESH]