PMID- 9851863 OWN - NLM STAT- MEDLINE DCOM- 19990119 LR - 20181201 IS - 0014-4827 (Print) IS - 0014-4827 (Linking) VI - 245 IP - 2 DP - 1998 Dec 15 TI - Alterations in both heparan sulfate proteoglycans and mitogenic activity of fibroblast growth factor-2 are triggered by inhibitors of proliferation in normal and breast cancer epithelial cells. PG - 239-44 AB - Heparan sulfate proteoglycans (HSPG) are involved in the regulation of cellular proliferation, differentiation, and migration. We have studied the effect of three inhibitors of proliferation on 35S incorporation into HSPG of the breast cancer cell lines MCF-7 and MDA-MB-231 and the normal breast epithelial cells (NBEC). Transforming growth factor beta-1 (TGFbeta-1), which inhibits the proliferation of NBEC, but not of MCF-7 and MDA-MB-231, cells induced an increase in 35S incorporation of HSPG in NBEC, but had no effect on cancer cells. Sodium butyrate (NaB), which inhibits NBEC as well as cancer cell proliferation, induced an increase in 35S incorporation into HSPG in all cell types studied. In contrast, retinoic acid had no effect on HSPG of breast epithelial cells. Modification of HSPG induced by TGFbeta-1 or NaB treatments in normal and breast cancer epithelial cells resulted in an increase in 125I-fibroblast growth factor-2 (FGF-2) binding on HSPG. More importantly, NaB pretreatment resulted in an inhibition of the MCF-7 cell responsiveness to FGF-2, even though these cells remained sensitive to growth stimulation induced by serum or epidermal growth factor. These results indicate that changes in HSPG production are a key process involved in the mechanism of breast epithelial cell growth regulation. CI - Copyright 1998 Academic Press. FAU - Lambrecht, V AU - Lambrecht V AD - Unite de Dynamique des Cellules Embryonnaires et Cancereuses, Batiment SN3, Universite des Sciences et Technologies de Lille, Villeneuve d'Ascq Cedex, 59655, France. FAU - Le Bourhis, X AU - Le Bourhis X FAU - Toillon, R A AU - Toillon RA FAU - Boilly, B AU - Boilly B FAU - Hondermarck, H AU - Hondermarck H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Exp Cell Res JT - Experimental cell research JID - 0373226 RN - 0 (Butyrates) RN - 0 (Growth Inhibitors) RN - 0 (Heparan Sulfate Proteoglycans) RN - 0 (Mitogens) RN - 0 (Transforming Growth Factor beta) RN - 103107-01-3 (Fibroblast Growth Factor 2) RN - 5688UTC01R (Tretinoin) RN - 62229-50-9 (Epidermal Growth Factor) RN - 9NEZ333N27 (Sodium) SB - IM MH - Binding Sites/drug effects MH - Breast Neoplasms MH - Butyrates/pharmacology MH - Cell Division/*drug effects MH - Cell Membrane/metabolism MH - Cells, Cultured MH - Epidermal Growth Factor/pharmacology MH - Epithelial Cells MH - Female MH - Fibroblast Growth Factor 2/*metabolism MH - Growth Inhibitors/*pharmacology MH - Heparan Sulfate Proteoglycans/*metabolism MH - Humans MH - Mitogens MH - Sodium/pharmacology MH - Transforming Growth Factor beta/pharmacology MH - Tretinoin/pharmacology MH - Tumor Cells, Cultured EDAT- 1998/12/16 00:00 MHDA- 1998/12/16 00:01 CRDT- 1998/12/16 00:00 PHST- 1998/12/16 00:00 [pubmed] PHST- 1998/12/16 00:01 [medline] PHST- 1998/12/16 00:00 [entrez] AID - S0014-4827(98)94199-4 [pii] AID - 10.1006/excr.1998.4199 [doi] PST - ppublish SO - Exp Cell Res. 1998 Dec 15;245(2):239-44. doi: 10.1006/excr.1998.4199.