PMID- 23469193 OWN - NLM STAT- MEDLINE DCOM- 20130827 LR - 20220309 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 8 IP - 3 DP - 2013 TI - Functional expression of TWEAK and the receptor Fn14 in human malignant ovarian tumors: possible implication for ovarian tumor intervention. PG - e57436 LID - 10.1371/journal.pone.0057436 [doi] LID - e57436 AB - The aim of this current study was to investigate the expression of the tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK) and its receptor fibroblast growth factor-inducible 14 (Fn14) in human malignant ovarian tumors, and test TWEAK's potential role on tumor progression in cell models in-vitro. Using immunohistochemistry (IHC), we found that TWEAK and its receptor Fn14 were expressed in human malignant ovarian tumors, but not in normal ovarian tissues or in borderline/benign epithelial ovarian tumors. High levels of TWEAK expression was detected in the majority of malignant tumors (36 out of 41, 87.80%). Similarly, 35 out of 41 (85.37%) malignant ovarian tumors were Fn14 positive. In these malignant ovarian tumors, however, TWEAK/Fn14 expression was not corrected with patients' clinical subtype/stages or pathological features. In vitro, we demonstrated that TWEAK only inhibited ovarian cancer HO-8910PM cell proliferation in combination with tumor necrosis factor-alpha (TNF-alpha), whereas either TWEAK or TNF-alpha alone didn't affect HO-8910PM cell growth. TWEAK promoted TNF-alpha production in cultured THP-1 macrophages. Meanwhile, conditioned media from TWEAK-activated macrophages inhibited cultured HO-8910PM cell proliferation and invasion. Further, TWEAK increased monocyte chemoattractant protein-1 (MCP-1) production in cultured HO-8910PM cells to possibly recruit macrophages. Our results suggest that TWEAK/Fn14, by activating macrophages, could be ovarian tumor suppressors. The unique expression of TWEAK/Fn14 in malignant tumors indicates that it might be detected as a malignant ovarian tumor marker. FAU - Gu, Liying AU - Gu L AD - Department of Gynecology and Obstetrics, Renji Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, PR China. FAU - Dai, Lan AU - Dai L FAU - Cao, Cong AU - Cao C FAU - Zhu, Jing AU - Zhu J FAU - Ding, Chuanwei AU - Ding C FAU - Xu, Hai-Bo AU - Xu HB FAU - Qiu, Lihua AU - Qiu L FAU - Di, Wen AU - Di W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130304 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Biomarkers, Tumor) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Cytokine TWEAK) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Recombinant Proteins) RN - 0 (TNFRSF12A protein, human) RN - 0 (TNFSF12 protein, human) RN - 0 (TWEAK Receptor) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Tumor Necrosis Factors) SB - IM MH - Biomarkers, Tumor/*genetics/metabolism MH - Carcinoma/*genetics/metabolism/pathology MH - Cell Line, Tumor MH - Cell Movement/drug effects MH - Cell Proliferation/drug effects MH - Chemokine CCL2/agonists/genetics/metabolism MH - Coculture Techniques MH - Cytokine TWEAK MH - Female MH - Gene Expression Regulation, Neoplastic/*drug effects MH - Humans MH - Macrophage Activation/drug effects MH - Macrophages/cytology/drug effects/metabolism MH - Ovarian Neoplasms/*genetics/metabolism/pathology MH - Receptors, Tumor Necrosis Factor/*genetics/metabolism MH - Recombinant Proteins/genetics/metabolism/pharmacology MH - Signal Transduction/drug effects MH - TWEAK Receptor MH - Tumor Necrosis Factor-alpha/biosynthesis/pharmacology MH - Tumor Necrosis Factors/*genetics/metabolism/pharmacology PMC - PMC3587594 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2013/03/08 06:00 MHDA- 2013/08/28 06:00 PMCR- 2013/03/04 CRDT- 2013/03/08 06:00 PHST- 2012/09/25 00:00 [received] PHST- 2013/01/22 00:00 [accepted] PHST- 2013/03/08 06:00 [entrez] PHST- 2013/03/08 06:00 [pubmed] PHST- 2013/08/28 06:00 [medline] PHST- 2013/03/04 00:00 [pmc-release] AID - PONE-D-12-29477 [pii] AID - 10.1371/journal.pone.0057436 [doi] PST - ppublish SO - PLoS One. 2013;8(3):e57436. doi: 10.1371/journal.pone.0057436. Epub 2013 Mar 4.