The Multifunctional Protein p62 and Its Mechanistic Roles in Cancers

Author(s): Shunbin Ning , Ling Wang* .

Journal Name: Current Cancer Drug Targets

Volume 19 , Issue 6 , 2019

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Graphical Abstract:


The multifunctional signaling hub p62 is well recognized as a ubiquitin sensor and a selective autophagy receptor. As a ubiquitin sensor, p62 promotes NFκB activation by facilitating TRAF6 ubiquitination and aggregation. As a selective autophagy receptor, p62 sorts ubiquitinated substrates including p62 itself for lysosome-mediated degradation. p62 plays crucial roles in myriad cellular processes including DNA damage response, aging/senescence, infection and immunity, chronic inflammation, and cancerogenesis, dependent on or independent of autophagy. Targeting p62-mediated autophagy may represent a promising strategy for clinical interventions of different cancers. In this review, we summarize the transcriptional and post-translational regulation of p62, and its mechanistic roles in cancers, with the emphasis on its roles in regulation of DNA damage response and its connection to the cGAS-STING-mediated antitumor immune response, which is promising for cancer vaccine design.

Keywords: p62, autophagy, ubiquitination, ROS, antitumor immune response, cancer vaccine design.

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Year: 2019
Page: [468 - 478]
Pages: 11
DOI: 10.2174/1568009618666181016164920
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