Multiethnic Genome-Wide Meta-Analysis of Ectopic Fat Depots Identifies Loci Associated With Adipocyte Development and Differentiation.

Figure 1

Functional characterization of Atxn1, Ebf1, Rreb1 and Ube2e2

(a,b,e) Data is displayed as box/whisker plots where the center line represents the median, box limits contain the 25th–75th percentiles, and whiskers span max/min values.
(a) Gene expression measured by qPCR in murine subcutaneous (SAT), perigonadal visceral (VAT), and pericardial (PAT) adipose tissues (n=6 mice). Statistical significance was assessed using ANOVA and Sidak’s correction for multiple comparisons.
(b) Gene expression measured by qPCR in murine adipose tissues after 8 weeks of high fat feeding compared to normal chow fed controls (n=5 mice per group). Statistical significance was assigned using a two-sided T-test.
(c) Gene expression measured by qPCR in cultured adipocyte progenitors isolated from the subcutaneous (SAT) or perigonadal visceral (VAT) depots (n=4 replicates). Cells were expanded to confluence and then collected at intervals after induction of adipogenic differentiation. Data displayed as mean, error bar=s.e.m. Statistical significance was assessed using ANOVA and Sidak’s correction for multiple comparisons to time 0.
(d) Oil-red-o staining of progenitors isolated from subcutaneous adipose and exposed to retroviral delivery of shRNA constructs during ex vivo expansion and induction of adipogenesis. Relative to control vector carrying a scramble sequence, shRNA constructs specific for Atxn1 and Ube2e2 impaired adipogenic differentiation. Scale=1mm.
(e) Oil-red-o stain was alcohol extracted and quantified at OD520 (n=9 technical replicates). Statistical significance was assessed using ANOVA and Sidak’s correction for multiple comparisons to control (Scramble). Data representative of 3 independent experiments.

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