Angiomotin regulates prostate cancer cell proliferation by signaling through the Hippo-YAP pathway

Hao Zeng, Angelica Ortiz, Peng Fei Shen, Chien Jui Cheng, Yu Chen Lee, Guoyu Yu, Song Chang Lin, Chad J. Creighton, Li Yuan Yu-Lee, Sue Hwa Lin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Angiomotin (AMOT) is a family of proteins found to be a component of the apical junctional complex of vertebrate epithelial cells and is recently found to play important roles in neurofibromatosis type 2 (NF-2). Whether AMOT plays a role in prostate cancer (PCa) is unknown. AMOT is expressed as two isoforms, AMOTp80 and AMOTp130, which has a 409 aa N-terminal domain that is absent in AMOTp80. Both AMOTp80 and AMOTp130 are expressed in LNCaP and C4-2B4, but at a low to undetectable level in PC3, DU145, and BPH1 cells. Further study showed that AMOTp130 and AMOTp80 have distinct functions in PCa cells. We found that AMOTp80, but not AMOT p130, functioned as a tumor promoter by enhancing PCa cell proliferation. Mechanistic studies showed that AMOTp80 signaled through the Hippo pathway by promoting nuclear translocation of YAP, resulting in an increased expression of YAP target protein BMP4. Moreover, inhibition of BMP receptor activity by LDN-193189 abrogates AMOTp80-mediated cell proliferation. Together, this study reveals a novel mechanism whereby the AMOTp80-Merlin-MST1-LATS-YAP-BMP4 pathway leads to AMOTp80-induced tumor cell proliferation.

Original languageEnglish
Pages (from-to)10145-10160
Number of pages16
JournalOncotarget
Volume8
Issue number6
DOIs
Publication statusPublished - 2017

Keywords

  • Angiomotin
  • BMP4
  • Hippo pathway
  • Proliferation
  • YAP

ASJC Scopus subject areas

  • Oncology

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  • Cite this

    Zeng, H., Ortiz, A., Shen, P. F., Cheng, C. J., Lee, Y. C., Yu, G., Lin, S. C., Creighton, C. J., Yu-Lee, L. Y., & Lin, S. H. (2017). Angiomotin regulates prostate cancer cell proliferation by signaling through the Hippo-YAP pathway. Oncotarget, 8(6), 10145-10160. https://doi.org/10.18632/oncotarget.14358