TFEB- and TFE3-dependent autophagy activation supports cancer proliferation in the absence of centrosomes

Chien Han Kao, Ting Yu Su, Wei Syun Huang, Xin Ying Lu, Wann Neng Jane, Chien Yung Huang, Hung Hsiang Huang, Won Jing Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Centrosome amplification is a phenomenon frequently observed in human cancers, so centrosome depletion has been proposed as a therapeutic strategy. However, despite being afflicted with a lack of centrosomes, many cancer cells can still proliferate, implying there are impediments to adopting centrosome depletion as a treatment strategy. Here, we show that TFEB- and TFE3-dependent autophagy activation contributes to acentrosomal cancer proliferation. Our biochemical analyses uncover that both TFEB and TFE3 are novel PLK4 (polo like kinase 4) substrates. Centrosome depletion inactivates PLK4, resulting in TFEB and TFE3 dephosphorylation and subsequent promotion of TFEB and TFE3 nuclear translocation and transcriptional activation of autophagy- and lysosome-related genes. A combination of centrosome depletion and inhibition of the TFEB-TFE3 autophagy-lysosome pathway induced strongly anti-proliferative effects in cancer cells. Thus, our findings point to a new strategy for combating cancer.

Original languageEnglish
JournalAutophagy
DOIs
StateAccepted/In press - 2022

Keywords

  • Anti-cancer therapy
  • autophagy
  • centrosome
  • lysosomal biogenesis
  • PLK4
  • transcription factor E3
  • transcription factor EB

Fingerprint

Dive into the research topics of 'TFEB- and TFE3-dependent autophagy activation supports cancer proliferation in the absence of centrosomes'. Together they form a unique fingerprint.

Cite this