PMID- 9710230 OWN - NLM STAT- MEDLINE DCOM- 19980903 LR - 20180512 IS - 0014-2980 (Print) IS - 0014-2980 (Linking) VI - 28 IP - 8 DP - 1998 Aug TI - Tumor-driven matrix invasion by infiltrating lymphocytes: involvement of the alpha1 integrin I-domain. PG - 2530-6 AB - Here we show that tumor cells (TC) from renal cancers regulate the migratory properties of autologous tumor-infiltrating lymphocytes (TIL), enhancing their ability to invade the extracellular matrix. A similar effect is exerted by human recombinant macrophage chemotactic protein 1 (MCP-1) and IL-8, chemokines known to increase T lymphocyte migration both across vascular endothelium and subendothelial matrix. We found that TC freshly derived from renal cell carcinoma surgical specimens constitutively secrete both IL-8 and MCP-1 and that TIL express both specific receptors. TIL matrix invasion elicited by TC is inhibited by the addition of neutralizing antisera specific for IL-8 and MCP-1, demonstrating the direct relationship between chemokine release by TC and TIL invasion. Of note, TIL invasion of the extracellular matrix requires the alpha1 integrin, which acts through its I-domain that is upregulated upon culture with MCP-1 and IL-8. Collectively, these findings suggest that TC may actively recruit TIL via the release of chemotactic factors that enhance an alpha1 integrin-mediated pathway of matrix invasion. FAU - Ferrero, E AU - Ferrero E AD - Laboratory of Tumor Immunology, Scientific Institute of San Raffaele, Milan, Italy. FAU - Fabbri, M AU - Fabbri M FAU - Poggi, A AU - Poggi A FAU - Galati, G AU - Galati G FAU - Bernasconi, S AU - Bernasconi S FAU - Zocchi, M R AU - Zocchi MR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Eur J Immunol JT - European journal of immunology JID - 1273201 RN - 0 (Antigens, CD) RN - 0 (Chemokine CCL2) RN - 0 (Integrin alpha1) RN - 0 (Interleukin-8) SB - IM MH - Antigens, CD/chemistry/*physiology MH - Carcinoma, Renal Cell/*immunology/pathology MH - Cell Movement/immunology MH - Chemokine CCL2/biosynthesis MH - Endothelium/immunology/pathology MH - Extracellular Matrix/immunology MH - Humans MH - In Vitro Techniques MH - Integrin alpha1 MH - Interleukin-8/biosynthesis MH - Kidney Neoplasms/*immunology/pathology MH - Lymphocytes, Tumor-Infiltrating/*immunology/pathology EDAT- 1998/08/26 02:19 MHDA- 2000/06/20 09:00 CRDT- 1998/08/26 02:19 PHST- 1998/08/26 02:19 [pubmed] PHST- 2000/06/20 09:00 [medline] PHST- 1998/08/26 02:19 [entrez] AID - 10.1002/(SICI)1521-4141(199808)28:08<2530::AID-IMMU2530>3.0.CO;2-6 [pii] AID - 10.1002/(SICI)1521-4141(199808)28:08<2530::AID-IMMU2530>3.0.CO;2-6 [doi] PST - ppublish SO - Eur J Immunol. 1998 Aug;28(8):2530-6. doi: 10.1002/(SICI)1521-4141(199808)28:08<2530::AID-IMMU2530>3.0.CO;2-6.