Journal: Journal of the Endocrine Society
Article Title: The Glucagon Receptor Is Expressed in the Frontal Cortex and Impaired Signaling Associates With Cognitive Decline
doi: 10.1210/jendso/bvaf056
Figure Lengend Snippet: The GCGR is expressed in several human brain regions. Ten different brain regions were investigated for GCGR protein expression using Western blotting technique with a previously validated GCGR antibody (cat# ab75240, lot# GR2260811-14, RRID: AB_1523687, Abcam). (A-D) Four cropped blots for GCGR expression (55 kDa) are shown with corresponding positive (GCGR-transfected HEK-293 cells) and negative (mock-transfected HEK-293 cells) controls. Uncropped blots are shown in Supplementary Fig. S1 . Control samples were loaded (1 µg protein) on each blot. Brain region names and brain numbers are shown above (A + B) or below (C + D) the corresponding band for each blot. (E) Protein levels of the GCGR in brain tissue regions (n = 4, loaded with 10 µg protein) measured by Western blotting. Levels of the GCGR were normalized to the total protein concentration for the individual blot and subsequently to the positive control to adjust for interblot variation. (F) Immunohistochemistry staining for the GCGR in the frontal cortex. #1 to #4 correspond to brain #1 to #4 in . Data are presented as means ± SEM. Abbreviations: AU, arbitrary units; GCGR, glucagon receptor; HEK, human embryonic kidney; TP, total protein.
Article Snippet: This was followed by 2 washing steps in PBS and subsequent overnight incubation at 4 °C with rabbit anti-human GCGR polyclonal primary antibody (1:200, cat# ab75240, lot# GR2260811-14, RRID: AB_1523687, Abcam) diluted in PBS.
Techniques: Expressing, Western Blot, Transfection, Control, Protein Concentration, Positive Control, Immunohistochemistry, Staining