Microarray Data Explorer
Info Raw gene Expression data is sourced from GEO, and the appropriate db package for mapping probes to gene symbols was sourced from the Bioconductor AnnotationData packages. You can read more about microarray data here.
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GROUP CONDITION SAMPLES
C57/BL6 mice White Adipose Tissue
GSM338986 GSM338987 GSM338988
GSM338989 GSM338990 GSM338991
GSM338983 GSM338984 GSM338985
GSM338992 GSM338993 GSM338994
Description

Submission Date: Nov 01, 2008

Summary: Cold triggers VEGF dependent but hypoxia independent angiogenesis in adipose tissues and anti-VEGF agents modulate adipose metabolism

The molecular mechanisms of angiogenesis in relation to adipose tissue metabolism remain poorly understood. Here we show that exposure of mice to cold led to conversion of white adipose tissue (WAT) to brown-like adipose tissue, accompanying the switch of an active angiogenic phenotype. Gene expression profile analysis showed VEGF was upregulated via most likely hypoxia-independent PGC-1 transcriptional activation. Intriguingly, VEGFR2 blockage abolished the cold-induced angiogenesis, significantly impaired nonshivering thermogenesis capacity, and markedly reduced adipose metabolism. Unexpectedly, VEGFR1 blockage resulted in opposite effects by increasing adipose vascularity and metabolism. These findings demonstrate that VEGFR2 and VEGFR1 mediate polarized activities in modulating adipose angiogenesis and metabolism. Taken together, our findings have conceptual implications in applying angiogenesis modulators for the treatment of obesity and metabolic disorders.

Keywords: Time course

GEO Accession ID: GSE13432

PMID: 19117550

Description

Submission Date: Nov 01, 2008

Summary: Cold triggers VEGF dependent but hypoxia independent angiogenesis in adipose tissues and anti-VEGF agents modulate adipose metabolism

The molecular mechanisms of angiogenesis in relation to adipose tissue metabolism remain poorly understood. Here we show that exposure of mice to cold led to conversion of white adipose tissue (WAT) to brown-like adipose tissue, accompanying the switch of an active angiogenic phenotype. Gene expression profile analysis showed VEGF was upregulated via most likely hypoxia-independent PGC-1 transcriptional activation. Intriguingly, VEGFR2 blockage abolished the cold-induced angiogenesis, significantly impaired nonshivering thermogenesis capacity, and markedly reduced adipose metabolism. Unexpectedly, VEGFR1 blockage resulted in opposite effects by increasing adipose vascularity and metabolism. These findings demonstrate that VEGFR2 and VEGFR1 mediate polarized activities in modulating adipose angiogenesis and metabolism. Taken together, our findings have conceptual implications in applying angiogenesis modulators for the treatment of obesity and metabolic disorders.

Keywords: Time course

GEO Accession ID: GSE13432

PMID: 19117550

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Info Visualizations are precomputed using the Python package scanpy on the top 5000 most variable genes.

Precomputed Differential Gene Expression

Info Differential expression signatures are automatically computed using the limma R package. More options for differential expression are available to compute below.

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Differential Gene Expression Analysis
Info Differential expression signatures can be computed using DESeq2 or characteristic direction.
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