Journal: Experimental and Therapeutic Medicine
Article Title: Dendrobium nobile Lindl. alkaloids improve lipid metabolism by increasing LDL uptake through regulation of the LXRα/IDOL/LDLR pathway and inhibition of PCSK9 expression in HepG2 cells
doi: 10.3892/etm.2025.12796
Figure Lengend Snippet: T0901317, an LXRα agonist, reverses the decrease in IDOL and LXRα expression induced by DNLA and reduces the LDLR content in HepG2 cells. (A) Protein expression of LXRα, IDOL and LDLR in HepG2 cells assessed by western blotting. Normalized intensity of (B) LXRα, (C) IDOL and (D) LDLR vs. GAPDH, presented as the mean ± SD of three independent experiments. * P<0.05, ** P<0.01, *** P<0.001 and **** P<0.0001. DNLA, Dendrobium nobile Lindl. alkaloids; LPS, lipopolysaccharides; LXRα, liver X receptor α; IDOL, inducible degrader of the low-density lipoprotein receptor; LDLR, low-density lipoprotein receptor.
Article Snippet: Subsequently, the membranes were blocked with 5% skimmed dry milk in Tris-buffer solution with 0.1% Tween-20 (TBST) at room temperature for 2 h before being incubated overnight at 4˚C with the following primary antibodies (1:1,000): Rabbit anti-LDLR (cat. no. ab30532; Abcam), rabbit anti-PCSK9 (cat. no. ab185194; Abcam), rabbit anti-IDOL (cat. no. bs-9674R; BIOSS), rabbit anti-SREBP2 (cat. no. ab30682; Abcam), rabbit anti-LXRα (cat. no. bs-10311R; BIOSS), rabbit anti-HNF1α (cat. no. 89670S; Cell Signaling Technology, Inc.), rabbit anti-3-hydroxy-3-methyl glutaryl-coenzyme A reductase (HMGCR; cat. no. ab242315; Abcam), rabbit anti-cytochrome P450 (CYP) 7A1 (cat. no. bs-21430R; BIOSS) and mouse anti-GAPDH (cat. no. 97166S; Cell Signaling Technology, Inc.).
Techniques: Expressing, Western Blot