Journal: bioRxiv
Article Title: Igf2 regulates early postnatal DPP4 + preadipocyte pool expansion
doi: 10.1101/2025.02.08.637214
Figure Lengend Snippet: Circulating levels of ( a ) insulin (n=8 pre-wean and n=5 adult) and ( b ) IGF2 (n=6 pre-wean and n=5 adult) in pre-wean and adult mice. ( c ) Secreted IGF2 levels in cell culture supernatant of pre-wean and adult primary scWAT preadipocytes (n= 3 pre-wean and n=4 adult). Primary adult preadipocytes were supplemented with (Dif. Adip + 10 nM IGF2) or without (Dif. Adip) 10 nM IGF2 during differentiation. mRNA expression levels of ( d ) Igf2 (n=5) and ( e ) adipogenic markers (n=5). ( f ) Western blot of differentiated adipocytes for InsR, IGF1R, PPARγ. B-Actin was used as loading control (n=5). ( g ) Lipid quantification by Oil Red O (ORO) (n=5). ( h ) Immunocytochemistry of F-Actin (grey) and Lipids (green) (n=4). Primary pre-wean preadipocytes were treated with 1 µg/ml IgG (Dif. Adip + IgG Cnt) or IGF2 neutralizing antibody (Dif. Adip IGF2 Ab) during differentiation. MRNA expression levels of ( i ) Igf2 (n=4) and ( j ) adipogenic markers (n=4). Data shown by mean ± SEM.
Article Snippet: Unspecific binding sites were blocked using 5% bovine serum albumin (BSA) or non-fat dried milk in TBS-T (1 X TBS containing 0.1% Tween-20) for 1h at RT, followed by incubation with primary antibodies overnight at 4°C: AKT (1:1000, Cell Signaling, 4685), phosphor-AKT Ser 473 (1:1000, Cell Signaling, 9271), ERK (1:1000, Cell Signaling, 4695), phosphor-ERK (1:1000, Cell Signaling, 4377), insulin receptor (InsR) (1:1000, Cell Signaling, 3020), IGF1 receptor (IGF1R) (1:1000, Cell Signaling, 9750), PPARγ (1:1000, Cell Signaling, 2443), B-Actin HRP (only 30 min at RT, 1:5000, Santa Cruz, Sc-47778).
Techniques: Cell Culture, Expressing, Western Blot, Control, Immunocytochemistry