PMID- 7517920 OWN - NLM STAT- MEDLINE DCOM- 19940809 LR - 20220409 IS - 0020-7136 (Print) IS - 0020-7136 (Linking) VI - 58 IP - 2 DP - 1994 Jul 15 TI - Human astrocytomas and glioblastomas express monocyte chemoattractant protein-1 (MCP-1) in vivo and in vitro. PG - 240-7 AB - Expression of the monocyte chemoattractant protein-1 (MCP-1) was examined in human central nervous system tumours (glioblastomas and astrocytomas) and normal human brain. Northern blot analysis demonstrated constitutive expression of MCP-1 mRNA in 6 of 12 glioblastoma cell lines. Expression could be stimulated by interleukin (IL)-1 beta and tumour necrosis factor (TNF)-alpha in all cell lines tested. Immunoprecipitation demonstrated secretion of both isoforms, MCP-1 alpha and -beta, of the MCP-1 protein. Reverse-transcription polymerase chain reaction and Northern blot analysis on tissues demonstrated MCP-1 mRNA expression in 17 of 17 glioblastomas, 3 of 6 anaplastic astrocytomas and 6 of 6 low-grade astrocytomas, as well as in fetal brain but not in normal adult brain. In situ hybridization on 2 glioblastomas and 1 low-grade astrocytoma indicates that neoplastic astrocytes and endothelial cells express MCP-1 mRNA in vivo. Moreover, tumour cyst fluids of glioblastomas and astrocytomas were able to induce monocyte chemoattraction in an in vitro assay. This chemotactic activity was specifically neutralized by anti-MCP-1 antibodies in 9 of 10 samples, further demonstrating the production of bioactive MCP-1 in vivo and supporting an important role for this factor in the infiltration of monocytes/macrophages into tumour tissue. FAU - Desbaillets, I AU - Desbaillets I AD - Laboratory of Tumour Biology and Genetics, University Hospital (CHUV), Lausanne, Switzerland. FAU - Tada, M AU - Tada M FAU - de Tribolet, N AU - de Tribolet N FAU - Diserens, A C AU - Diserens AC FAU - Hamou, M F AU - Hamou MF FAU - Van Meir, E G AU - Van Meir EG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Int J Cancer JT - International journal of cancer JID - 0042124 RN - 0 (Chemokine CCL2) RN - 0 (Chemotactic Factors) RN - 0 (Cytokines) RN - 0 (RNA, Messenger) RN - EC 2.7.7.49 (RNA-Directed DNA Polymerase) SB - IM GS - MCP-1 MH - Astrocytoma/genetics/*metabolism MH - Base Sequence MH - Blotting, Northern MH - Brain Neoplasms/genetics/*metabolism MH - Chemokine CCL2 MH - Chemotactic Factors/*biosynthesis/genetics/metabolism MH - Cytokines/biosynthesis/genetics/metabolism MH - Gene Expression MH - Glioblastoma/genetics/*metabolism MH - Humans MH - Molecular Sequence Data MH - Polymerase Chain Reaction MH - RNA, Messenger/genetics MH - RNA-Directed DNA Polymerase MH - Tumor Cells, Cultured EDAT- 1994/07/15 00:00 MHDA- 1994/07/15 00:01 CRDT- 1994/07/15 00:00 PHST- 1994/07/15 00:00 [pubmed] PHST- 1994/07/15 00:01 [medline] PHST- 1994/07/15 00:00 [entrez] AID - 10.1002/ijc.2910580216 [doi] PST - ppublish SO - Int J Cancer. 1994 Jul 15;58(2):240-7. doi: 10.1002/ijc.2910580216.