Table 1

Steroid production by control (non-transfected) and SR-BI transfected Y1-BS1 mouse adrenocortical cells

Experimental Conditions
20α-Dihydroprogesterone (ng/mg cell protein/5h ± SE)

Control (vector)-transfected Y1-BS1 Cells

     • Bt2cAMP (2.5 mM)
4542 ± 990
     • Bt2cAMP + hHDL3
11620 ± 2041


SR-BI transfected Y1-BS1 cells

     • Bt2cAMP (2.5 mM)
5303 ± 1298
     • Bt2cAMP + hHDL3
26340 ± 2059

Results are Mean ± SE of four separate experiments.

Cultures of Y1-BS1 cells were transfected with rSR-BI-V5-pcDNA6.1 (or vector control) constructs for 48 h. Twenty four hours after transfection, some cultures were treated with Bt2cAMP (2.5 mM) for an additional 24 h. Subsequently, cells were incubated for 5 h in the absence (basal) or presence of Bt2cAMP (2.5 mM) ± hHDL3 (500 μg protein/ml) as indicated. Following incubation, a suitable aliquot of the medium from each sample was collected, and steroids were extracted from the medium using methylene chloride and quantified by fluorescence in 65% sulfuric acid-35% ethanol using corticosterone as a standard.

p = 0.0023 vs Bt2cAMP + hHDL3-treated control cells

Reaven et al. Nutrition & Metabolism 2006 3:43   doi:10.1186/1743-7075-3-43