Journal
INTERNATIONAL JOURNAL OF BIOCHEMISTRY & CELL BIOLOGY
Volume 45, Issue 8, Pages 1869-1877Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biocel.2013.05.027
Keywords
OSM; Mesenchymal stem cells; Prostate cancer; Periostin; TGFBI
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Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0011288]
- National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea [0920050]
- National Research Foundation of Korea [2010-0011288] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Oncostatin M, a member of the interleukin-6 family of cytokines, has been implicated in tumorigenesis of human prostate cancer. In the current study, we demonstrate that oncostatin M promotes human adipose tissue-derived mesenchymal stem cell-stimulated tumor growth in an in vivo xenograft transplantation model of the human prostate cancer cell line PC-3M-luc-C6, a PC3M cell line expressing the luciferase gene. Conditioned medium derived from oncostatin M-treated mesenchymal stem cells stimulated adhesion of PC-3M-luc-C6 cells. We identified TGFBI and periostin, extracellular matrix proteins implicated in tumorigenesis and metastasis, as oncostatin M-induced secreted proteins in mesenchymal stem cells. Treatment with oncostatin M stimulated secretion of periostin and TGFBI from mesenchymal stem cells in a time-dependent manner. Immunodepletion of TGFBI and periostin from conditioned medium derived from oncostatin M-treated mesenchymal stem cells resulted in abrogation of adhesion of PC-3M-luc-C6 cells stimulated by oncostatin M-conditioned medium. In addition, small interfering RNA-mediated silencing of TGFBI and periostin resulted in abrogation of cell adhesion stimulated by oncostatin M-conditioned medium. These results suggest that mesenchymal stem cell-derived TGFBI and periostin play a key role in tumorigenesis by stimulating adhesion of prostate cancer cells. (C) 2013 Elsevier Ltd. All rights reserved.
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