Effect of anticancer drugs on production of transforming growth factor and expression of p53 AND Bcl-2 proteins by MCF-7 and T47D cell lines of human breast carcinoma.

Autor:	Stoika RS; Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv, Ukraine. stoika@cellbiol.lviv.ua, Yakymovych IA, Kashchak NI, Boyko MM, Korynevska AV, Klyuchyvska OY, Shafranska GI, Yakymovych MY, Zhylchuk VY, Kudryavets YY, Vorontsova AL
Jazyk:	angličtina
Zdroj:	Experimental oncology [Exp Oncol] 2008 Mar; Vol. 30 (1), pp. 35-41.
Abstrakt:	Aim: To compare the capability of methotrexate, cisplatin, doxorubicine and vincristine to induce production of the transforming growth factor beta(1) (TGF-beta(1)) in two cell lines - MCF-7 and T47D - of human breast carcinoma, as well as to study sensitivity of these cells to TGF-beta(1) and mentioned anticancer drugs. Materials and Methods: ELISA for detection of TGF-beta content in conditioned culture media and Western-blot analysis of the proapoptotic p53 and antiapoptotic Bcl-2 proteins were applied. Results: T47D cells showing higher resistance to growth inhibiting effect of TGF-beta(1) were also refractory to cisplatin. There was no difference between MCF-7 and T47D cells in their sensitivity to methotrexate and doxorubicine, although T47D cells were more sensitive to vincristine. It was found that methotrexate and vincristine did not affect TGF-beta(1) production, while doxorubicine used at a dose of 1-100 ug/ml, significantly induced TGF-beta(1) production in both cell lines. p53 expression in T47D cells was higher than in MCF-7 cells where only doxorubicin induced strongly p53 expression. It should be noted, that Bcl-2 was better expressed in MCF-7 cells, while it was almost undetectable in T47D cells. Conclusion: In cells of human mammary carcinoma of MCF-7 and T47D lines doxorubicine, unlike vincristine and methotrexate, in dose depending manner induces production of TGF-beta(1). TGF-beta(1) production in carcinoma cells was associated with doxorubicine-mediated p53 expression in MCF-7 cells or high basal level of p53 in T47D cells. The cells of MCF-7 line were more sensitive to growth inhibition by exogenous TGF-beta(1) and to cisplatine action than T47D cells, but there was no difference between these cell lines in sensitivity to other anticancer drugs.
Databáze:	MEDLINE
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