Background:

5a-Pregnane-3,20-dione is the endogenous progesterone metabolite.

5a-Pregnane-3,20-dione decreases cell-substrate attachment, adhesion plaques, vinculin expression, and polymerizes F-actin in MCF-7 breast cancer cells[1].

[1]. Wiebe JP, et al. The endogenous progesterone metabolite, 5a-pregnane-3,20-dione, decreases cell-substrate attachment, adhesion plaques, vinculin expression, and polymerized F-actin in MCF-7 breast cancer cells. Endocrine. 2001 Oct;16(1):7-14.