Characterization of phosphoglycerate kinase-1 expression of stromal cells derived from tumor microenvironment in prostate cancer progression

Jianhua Wang, Gigi Ying, Jingchen Wang, Younghun Jung, Jian Lu, Jiang Zhu, Kenneth J. Pienta, Russell S. Taichman

Research output: Contribution to journalArticlepeer-review

Abstract

Tumor and stromal interactions in the tumor microenvironment are critical for oncogenesis and cancer progression. Our understanding of the molecular events by which reactive stromal fibroblasts - myofibroblast or cancer-associated fibroblasts (CAF) - affect the growth and invasion of prostate cancer remains unclear. Laser capture microdissection and cDNA microarray analysis of CAFs in prostate tumors revealed strong up-regulation of phosphoglycerate kinase-1 (PGK1), an ATP-generating glycolytic enzyme that forms part of the glycolytic pathway and is directly involved in CXCL12-CXCR4 signaling. Normal fibroblasts overexpressing PGK1 resembled myofibroblasts in their expression of smooth muscle α-actin, vimentin, and high levels of CXCL12. These cells also displayed a higher proliferative index and the capability to contribute to prostate tumor cell invasion in vitro, possibly through expression of MMP-2 and MMP-3 and activation of the AKT and ERK pathways. Coimplantation of PGK1-overexpressing fibroblasts with prostate tumor cells promoted tumor cell growth in vivo. Collectively, these observations suggest that PGK1 helps support the interactions between cancer and its microenvironment.

Original languageEnglish (US)
Pages (from-to)471-480
Number of pages10
JournalCancer Research
Volume70
Issue number2
DOIs
StatePublished - Jan 15 2010
Externally publishedYes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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