Microenvironment proteinases, proteinase-activated receptor regulation, cancer and inflammation

Rahil Eftekhari, Stacy G.De Lima, Yu Liu, Koichiro Mihara, Mahmoud Saifeddine, Farshid Noorbakhsh, Isobel A Scarisbrick, Morley D. Hollenberg

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We propose that in the microenvironment of inflammatory tissues, including tumours, extracellular proteinases can modulate cell signalling in part by regulating proteinaseactivated receptors (PARs). We have been exploring this mechanism in a variety of inflammation and tumour-related settings that include tumour-derived cultured cells from prostate and bladder cancer, as well as immune inflammatory cells that are involved in the pathology of inflammatory diseases including multiple sclerosis. Our work shows that proteinase signalling via the PARs affects prostate and bladder cancer-derived tumour cell behaviour and can regulate calcium signalling in human T-cell and macrophage-related inflammatory cells as well as in murine splenocytes. Further, we find that the tumour-derived prostate cancer cells and immune-related cells (Jurkat, THP1, mouse splenocytes) can produce PAR-regulating proteinases (including kallikreins: KLKs), that can control tissue function by both a paracrine and autocrine mechanism. We suggest that this PAR-driven signalling process involving secreted microenvironment proteinases can play a key role in cancer and inflammatory diseases including multiple sclerosis.

Original languageEnglish (US)
JournalBiological Chemistry
DOIs
StateAccepted/In press - Jun 20 2018

Keywords

  • bladder cancer
  • microenvironment proteinases
  • multiple sclerosis
  • prostate cancer
  • proteinase-activated receptors (PARs)
  • T-cells/macrophages/splenocytes

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Clinical Biochemistry

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  • Cite this

    Eftekhari, R., Lima, S. G. D., Liu, Y., Mihara, K., Saifeddine, M., Noorbakhsh, F., Scarisbrick, I. A., & Hollenberg, M. D. (Accepted/In press). Microenvironment proteinases, proteinase-activated receptor regulation, cancer and inflammation. Biological Chemistry. https://doi.org/10.1515/hsz-2018-0001