PMID- 1564545 OWN - NLM STAT- MEDLINE DCOM- 19920518 LR - 20041117 IS - 0022-3085 (Print) IS - 0022-3085 (Linking) VI - 76 IP - 5 DP - 1992 May TI - Suppression of anchorage-independent growth of human glioblastoma cell by major histocompatibility complex class I gene-transfection. PG - 845-9 AB - The host's immune system discriminates tumor cells from normal cells by recognizing the major histocompatibility complex (MHC) class I antigen expressed on the tumor cell membrane. However, the role of MHC class I antigen in tumor cells has not yet been clarified. In this study, the influence of MHC class I antigen expression on the tumorigenicity of a human glioblastoma cell line (KMG4) is examined. Barely detectable levels of MHC class I messenger ribonucleic acid were found to express in KMG4 cells by Northern blot analysis using mouse MHC class I (H-2Ld) and human leukocyte antigen (HLA)-B7 genes as probes. The H-2Ld gene connected at the downstream end of murine mammary tumor virus (MMTV)-promoter was cotransfected with the neomycine-resistant gene pSV2-neo into KMG4 cells, and the drug-resistant cells were selected. The KMG4 cells (KMG4-MMTV-Ld), which acquired the MHC class I gene were detected by Northern blot analysis with H-2Ld as the probe, and by immunohistochemistry using the H-2Ld-specific monoclonal antibody. Tumorigenicity, as determined by colony-forming ability in soft agar, was then compared between MHC class I-expressing KMG4-MMTV-Ld and nonexpressing control cells. The MHC class I-expressing cells were found to be deprived of colony-forming ability, indicating that MHC class I antigen could negatively influence the anchorage-independent cell growth of the human glioblastoma cell line KMG4. FAU - Momozaki, N AU - Momozaki N AD - Department of Neurosurgery, Saga Medical School, Japan. FAU - Oh-Uchida, M AU - Oh-Uchida M FAU - Tabuchi, K AU - Tabuchi K FAU - Ikezaki, K AU - Ikezaki K FAU - Hori, K AU - Hori K LA - eng PT - Journal Article PL - United States TA - J Neurosurg JT - Journal of neurosurgery JID - 0253357 RN - 0 (H-2 Antigens) SB - IM MH - Animals MH - Blotting, Northern MH - Cell Division/genetics/immunology MH - Gene Expression MH - Genes, MHC Class I/*genetics MH - Glioma/*genetics/immunology/pathology MH - H-2 Antigens/genetics/physiology MH - Humans MH - Mice MH - Transfection MH - Tumor Cells, Cultured EDAT- 1992/05/01 00:00 MHDA- 1992/05/01 00:01 CRDT- 1992/05/01 00:00 PHST- 1992/05/01 00:00 [pubmed] PHST- 1992/05/01 00:01 [medline] PHST- 1992/05/01 00:00 [entrez] AID - 10.3171/jns.1992.76.5.0845 [doi] PST - ppublish SO - J Neurosurg. 1992 May;76(5):845-9. doi: 10.3171/jns.1992.76.5.0845.