Related Experiment Video

Updated: Mar 13, 2026

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry
11:39

Assessing Autophagic Flux by Measuring LC3, p62, and LAMP1 Co-localization Using Multispectral Imaging Flow Cytometry

Published on: July 21, 2017

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p62 in Cancer: Signaling Adaptor Beyond Autophagy

Jorge Moscat1, Michael Karin2, Maria T Diaz-Meco1

  • 1Cancer Metabolism and Signaling Networks Program, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA.

Cell
|October 22, 2016
PubMed

Insights

The adaptor protein p62, encoded by Sqstm1, plays a crucial role beyond autophagy. It independently regulates epithelial tumor initiation and stromal tumor suppression through key signaling functions.

Area of Science:

  • Cellular Biology
  • Molecular Oncology
  • Autophagy Research

Background:

  • Adaptor proteins are essential for selective autophagy, a process vital for cellular detoxification and stress management.
  • The protein p62 (Sqstm1) is a known participant in autophagy pathways.

Purpose of the Study:

  • To investigate the role of the adaptor protein p62 (Sqstm1) in cellular signaling independent of autophagy.
  • To elucidate the function of p62 in tumor initiation and progression.

Main Methods:

  • The study likely involved molecular biology techniques to assess p62's function.
  • Analysis of signaling pathways related to epithelial tumor initiation and stromal tumor suppression was performed.

Main Results:

  • New evidence indicates p62 has a critical, autophagy-independent role in signaling.
  • p62 is central to tumor initiation in epithelial cells.
  • p62 contributes to the suppression of tumor progression in stromal cells.

Conclusions:

  • The adaptor protein p62 (Sqstm1) possesses significant signaling functions independent of autophagy.
  • These functions are critical for both initiating tumors in the epithelium and suppressing their progression in the stroma.

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