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Connective Tissue Growth Factor (CTGF) as a Regulator of Lactogenic Differentiation

机译:结缔组织生长因子(CTGF)作为乳酸分化的调节剂

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The degree of differentiation of mammary epithelial cells is dependent on their response to basement membrane and stromal protein-induced signals. Connective Tissue Growth Factor (CTGF/CCN2), a known stromal mediator, is highly upregulated by dexamethasone and is required for the lactogenic differentiation of mouse mammary epithelial cells. Using a Tet-off system to overexpress CTGF/CCN2 in the HC11 cell background, we found that its elevated expression enhanced multiple markers of lactogenic differentiation, including beta-casein transcription, mammosphere formation, and stabilization of Stat5 activity. Elevated levels of CTGF/CCN2 partially abrogated the requirement of matrix proteins for the transcription of beta-casein, suggesting that CTGF/CCN2 contributes to lactogenic differentiation through a regulation of cell:matrix adhesion.

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