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2014 ; 1845
(2
): 126-35
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MUC1: a novel metabolic master regulator
#MMPMID24418575
Mehla K
; Singh PK
Biochim Biophys Acta
2014[Apr]; 1845
(2
): 126-35
PMID24418575
show ga
MUC1, a type I transmembrane protein, is significantly overexpressed and
aberrantly glycosylated in tumors of epithelial origin. By virtue of its aberrant
signaling due to loss of apical-basal polarity in cancer, MUC1 regulates the
metabolite flux at multiple levels. Serving as a transcriptional co-activator,
MUC1 directly regulates expression of metabolic genes. By regulating receptor
tyrosine kinase signaling, MUC1 facilitates production of biosynthetic
intermediates required for cell growth. Also, via direct interactions, MUC1
modulates the activity/stability of enzymes and transcription factors that
directly regulate metabolic functions. Additionally, by modulation of autophagy,
levels of reactive oxygen species, and metabolite flux, MUC1 facilitates cancer
cell survival under hypoxic and nutrient-deprived conditions. This article
provides a comprehensive review of recent literature on novel metabolic functions
of MUC1.