Journal: Pharmaceuticals
Article Title: Role of the Insulin Receptor in Mediating Cytosolic Delivery of Proteins by a Modified Cell-Penetrating Peptide
doi: 10.3390/ph18121885
Figure Lengend Snippet: Effects of Pas2r12 or Pas2r12–cargo protein complex stimulation on INSR/IGF1R in IGF1R-overexpressing cells. ( A ) HEKI#66 cells pretreated with DMSO (linsitinib [−]) or linsitinib (linsitinib [+]) were stimulated with Pas2r12, Pas2r12–EGFP, or insulin for 2 min. Level of phosphorylated INSR/IGF1R (pINSR/pIGF1R) was assessed by Western blot. ( B ) Relative levels of pINSR/pIGF1R, normalized to GAPDH, corresponding to the data in panel A. Phosphorylation levels were analyzed using Student’s t -test. Each treatment condition was compared with the solvent-treated HEKI#66 control (linsitinib [−]), and, for each treatment, phosphorylation levels in the linsitinib (−) and linsitinib (+) conditions were also compared. Statistically significant differences compared with the solvent-treated control are indicated on the bar graphs, and significant differences between linsitinib (+) and linsitinib (−) treatments are marked by horizontal lines. Error bars indicate the standard error of the mean (SEM). * p < 0.05, *** p < 0.001. N = 3.
Article Snippet: Membranes were incubated with primary monoclonal antibodies against phospho-insulin receptor β (p-IRβ; clone 10C3, sc-81500; Santa Cruz Biotechnology, Dallas, TX, USA), INSR (MAA895Hu21; Cloud-Clone Corp., Houston, TX, USA), phospho-ERK1/2 (sc-7383; Santa Cruz Biotechnology), ERK1/2 (sc-514302; Santa Cruz Biotechnology), and IGF-1 receptor (MAB659Hu22; Cloud-Clone Corp).
Techniques: Western Blot, Phospho-proteomics, Solvent, Control