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The pathogenesis of pituitary adenomas and many of the genes influencing growth of these tumors are unknown. TGFβ is known to inhibit proliferation of cultured anterior pituitary cells and anterior pituitary tumors, but the signal transduction pathways involved in the inhibition of growth are unclear. We treated the human HP75 pituitary cell line with 10−9 M TGFβ1 for 4, 24, and 96 h and performed...
Recent studies have shown that 7B2 and the neuroendocrine-specific proconvertase PC2 have important roles in pituitary cell proliferation and hormone secretion. Studies from our laboratory have also shown that TGFb1 regulates anterior pituitary cell proliferation and hormone secretion. To study the regulation of 7B2 in human pituitary tumors, we used a cell line derived from a human pituitary adenoma...
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