Table 1.
Sites of expression of Hedgehog pathway genes in steroidogenic tissues
| Tissue | Gene | Localization |
|---|---|---|
| Adrenal gland | Shh | Subcapsule |
| Ptch, Gli | Capsule | |
| Testis | Dhh | Sertoli precursor cells |
| Ptch, Gli | Interstitial cells, Leydig cells, and endothelial cells | |
| Ovary | Dhh, Ihh | Granulosa cells of antral follicles |
| Ptch, Gli | Theca cells surrounding follicles; expression lost during ovulation; low expression levels in ovarian stroma |
Abbreviations: Dhh, Desert hedgehog; Gli, Glioma-associated oncogene; Ihh, Indian hedgehog; Ptch, Patched; Shh, Sonic hedgehog.