PMID- 1301582 OWN - NLM STAT- MEDLINE DCOM- 19930603 LR - 20041117 IS - 0361-7742 (Print) IS - 0361-7742 (Linking) VI - 378 DP - 1992 TI - Flow cytometric analysis and motility response to laminin and fibronectin of four new metastatic variants of the human renal cell carcinoma line RC43. PG - 195-205 AB - Using subrenal capsule implantation (SRC) in nude mice we have isolated 4 new sublines (RC43MSP, MBO, MLI, MDI) from the human renal cell carcinoma line (HRCC) RC43. These sublines exhibit an enhanced metastatic ability and a faster doubling time after subcutaneous (SC) transplantation in vivo, when compared to the parental line. With the aim of a better characterization of these new sublines we have performed a flow cytometric analysis (FA) of the DNA content and studied the motility response (MR) to laminin and fibronectin. FA results. The RC43 parental line showed a tetraploid pattern (DNA index: 2.08). Also the variant lines RC43MLI and RC43MDI were tetraploid (DNAind: 2.05 and 2.07, respectively). With RC43MDI a second peak in the tetraploid range was evident. The RC43MSP and the RC43MBO sublines both showed a hypertetraploid pattern (DNAind respectively 2.21 and 2.11). MR results. Motility studies showed that all RC43 lines, including the parental line, were stimulated to migrate in response to either laminin or fibronectin both from rat and human sources. There were no significant differences between the parental line and its variants in this respect, however. We conclude that by the use of FA at least two of the sublines (MSP and MBO) can be distinguished from the parental RC43 cell line, suggesting a different clonal origin of the various sublines. As all sublines, as well as the parental line, showed a large but similar response to migration-stimulating agents (such as laminin and fibronectin) determination of MR could not be used to obtain a further discrimination between the different sublines. FAU - Grossi, F S AU - Grossi FS AD - Department of Urology, Erasmus University Rotterdam, The Netherlands. FAU - Keizer, D M AU - Keizer DM FAU - Saracino, G A AU - Saracino GA FAU - Erkens, S AU - Erkens S FAU - Romijn, J C AU - Romijn JC FAU - Schroder, F H AU - Schroder FH LA - eng PT - Journal Article PL - United States TA - Prog Clin Biol Res JT - Progress in clinical and biological research JID - 7605701 RN - 0 (DNA, Neoplasm) RN - 0 (Fibronectins) RN - 0 (Laminin) SB - IM MH - Animals MH - Carcinoma, Renal Cell/genetics/pathology/*secondary MH - Cell Movement/drug effects MH - DNA, Neoplasm/genetics MH - Fibronectins/pharmacology MH - Flow Cytometry MH - Humans MH - *Kidney Neoplasms/genetics/pathology MH - Laminin/pharmacology MH - Mice MH - Mice, Nude MH - Neoplasm Transplantation MH - Polyploidy MH - Transplantation, Heterologous MH - Tumor Cells, Cultured/drug effects/pathology EDAT- 1992/01/01 00:00 MHDA- 1992/01/01 00:01 CRDT- 1992/01/01 00:00 PHST- 1992/01/01 00:00 [pubmed] PHST- 1992/01/01 00:01 [medline] PHST- 1992/01/01 00:00 [entrez] PST - ppublish SO - Prog Clin Biol Res. 1992;378:195-205.