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. 2016 Sep 30;49(9):488–496. doi: 10.5483/BMBRep.2016.49.9.141

Table 1. Extra-gonadal sites of estrogen synthesis.

Sites Evidence of 17β-estradiol synthesis References

Cyp19 mRNA Cyp19 protein 17β-estradiol

Brain Astrocyte (rat, mouse, human), Hippocampus and hypothalamus (rat, mouse, monkey, human) Astrocyte (mouse), GnRH (rat), Dentate gyrus/ pyramidal cell (rat, mouse, human, monkey), Interneurons (human), Granular cell (human, monkey), Purkinje cell (human, mouse), Ependymal andsubependymal cell (human). Astrocyte (rat, monkey). (7-16)
Fat Stromal cell (human), Adipocyte (human) Stromal cell (human), Adipocyte, mesenchymal cell (human) (13-16)
Bone Osteoblast (human) Osteoblast (human) Osteoblast (human) (17-19)
Liver HepG2 hepatoma andhepatocellular carcinoma (human), Hepatocyte (porcine). HepG2 hepatoma and hepatocellular carcinoma (human) HepG2 hepatoma and hepatocellular carcinoma (human) (20-22)
Adrenal gland Adrenocortical cell (human, porcine, rat) Adrenocortical cell (human) Adrenocortical cell (rat) (22-24)
Intestine Parietal cell (rat) Parietal cell (rat) Parietal cell (rat) (25)
Skin Fibroblast (human). Keratinocyte (human). Fibroblast (chicken, human), Keratinocyte (human) Fibroblast (chicken) (26-28)
Blood vessel Smooth muscle cell (human, rat, bovine) Smooth muscle cell (human, rat, bovine) (29-31)
Spleen T cell (mouse) T cell (mouse) (32)