PMID- 11156403 OWN - NLM STAT- MEDLINE DCOM- 20010222 LR - 20171116 IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 60 IP - 24 DP - 2000 Dec 15 TI - Natural killer cell-dependent suppression of systemic spread of human lung adenocarcinoma cells by monocyte chemoattractant protein-1 gene transfection in severe combined immunodeficient mice. PG - 7002-7 AB - Monocyte chemoattractant protein-1 (MCP-1) is a chemokine with various biological activities, including augmentation of cytotoxic activity of monocytes and natural killer (NK) cells. The present study was undertaken to determine whether transfection of the MCP-1 gene into lung cancer cells affected their tumorigenicity and metastatic potential by the NK cell-mediated mechanism. The human MCP-1 gene inserted into an expression vector (BCMGSNeo) was transfected into human lung adenocarcinoma (PC-14) cells. There was no difference in in vitro proliferation between MCP-1 gene-transfected PC-14 cells and the parent cells or mock-transfected cells. The tumorigenicity and in vivo tumor growth of MCP-1 gene-transfected PC-14 cells were similar to those of the parent cells or mock-transfected cells when tumor cells were injected into the s.c. space of NK cell-intact severe combined immunodeficient (SCID) mice. Although parent cells and mock-transfected cells inoculated i.v. formed lung metastatic colonies and pleural effusion, MCP-1 gene transfectants reduced the systemic spread in NK cell-intact SCID mice. Interestingly, these modulations in a systemic spread by MCP-1 gene transfection were not observed in NK cell-depleted SCID mice. Decreased survival of MCP-1 gene transfectants in the lung was observed in NK cell-intact SCID mice but not in NK cell-depleted SCID mice. Recombinant MCP-1 or the supernatant of MCP-1 gene transfectants enhanced the cytotoxicity of human CD56+ NK cells and spleen cells of SCID mice against PC-14 cells. These findings suggest that locally produced MCP-1 suppresses tumor progression by a NK cell-mediated mechanism, depending on organ microenvironment. FAU - Nokihara, H AU - Nokihara H AD - Third Department of Internal Medicine, University of Tokushima School of Medicine, Japan. FAU - Yanagawa, H AU - Yanagawa H FAU - Nishioka, Y AU - Nishioka Y FAU - Yano, S AU - Yano S FAU - Mukaida, N AU - Mukaida N FAU - Matsushima, K AU - Matsushima K FAU - Sone, S AU - Sone S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (CD56 Antigen) RN - 0 (Chemokine CCL2) RN - 0 (Recombinant Proteins) SB - IM MH - Adenocarcinoma/*immunology MH - Animals MH - Blotting, Northern MH - CD56 Antigen/metabolism MH - Cell Division/drug effects MH - Chemokine CCL2/*genetics MH - Enzyme-Linked Immunosorbent Assay MH - Flow Cytometry MH - Genetic Vectors MH - Humans MH - Killer Cells, Natural/*drug effects/*immunology MH - Lung Neoplasms/*immunology MH - Male MH - Mice MH - Mice, SCID MH - Neoplasm Invasiveness MH - Neoplasm Transplantation MH - Recombinant Proteins/metabolism MH - Spleen/cytology MH - Time Factors MH - Transfection MH - Tumor Cells, Cultured EDAT- 2001/01/13 11:00 MHDA- 2001/03/03 10:01 CRDT- 2001/01/13 11:00 PHST- 2001/01/13 11:00 [pubmed] PHST- 2001/03/03 10:01 [medline] PHST- 2001/01/13 11:00 [entrez] PST - ppublish SO - Cancer Res. 2000 Dec 15;60(24):7002-7.