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An aberrant SREBP-dependent lipogenic program promotes metastatic prostate cancer

  • Ming Chen
  • , Jiangwen Zhang
  • , Katia Sampieri
  • , John G. Clohessy
  • , Lourdes Mendez
  • , Enrique Gonzalez-Billalabeitia
  • , Xue Song Liu
  • , Yu Ru Lee
  • , Jacqueline Fung
  • , Jesse M. Katon
  • , Archita Venugopal Menon
  • , Kaitlyn A. Webster
  • , Christopher Ng
  • , Maria Dilia Palumbieri
  • , Moussa S. Diolombi
  • , Susanne B. Breitkopf
  • , Julie Teruya-Feldstein
  • , Sabina Signoretti
  • , Roderick T. Bronson
  • , John M. Asara
  • Mireia Castillo-Martin, Carlos Cordon-Cardo, Pier Paolo Pandolfi

Research output: Contribution to journalArticlepeer-review

275 Scopus citations

Abstract

Lipids, either endogenously synthesized or exogenous, have been linked to human cancer. Here we found that PML is frequently co-deleted with PTEN in metastatic human prostate cancer (CaP). We demonstrated that conditional inactivation of Pml in the mouse prostate morphs indolent Pten-null tumors into lethal metastatic disease. We identified MAPK reactivation, subsequent hyperactivation of an aberrant SREBP prometastatic lipogenic program, and a distinctive lipidomic profile as key characteristic features of metastatic Pml and Pten double-null CaP. Furthermore, targeting SREBP in vivo by fatostatin blocked both tumor growth and distant metastasis. Importantly, a high-fat diet (HFD) induced lipid accumulation in prostate tumors and was sufficient to drive metastasis in a nonmetastatic Pten-null mouse model of CaP, and an SREBP signature was highly enriched in metastatic human CaP. Thus, our findings uncover a prometastatic lipogenic program and lend direct genetic and experimental support to the notion that a Western HFD can promote metastasis.

Original languageEnglish
Pages (from-to)206-218
Number of pages13
JournalNature Genetics
Volume50
Issue number2
DOIs
StatePublished - 1 Feb 2018

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