Dynamic subcellular localization of aquaporin‐7 in white adipocytes
pmid: 25643985
Dynamic subcellular localization of aquaporin‐7 in white adipocytes
Aquaporin‐7 (AQP7) is expressed in adipose tissue, permeated by water and glycerol, and is involved in lipid metabolism. AQP7‐null mice develop obesity, insulin resistance, and adipocyte hypertrophy. Here, we show that AQP7 is expressed in adipocyte plasma membranes, and is re‐localized to intracellular membranes in response to catecholamine in mouse white adipose tissue. We found that internalization of AQP7 was induced by PKA activation and comparative gene identification 58 (CGI‐58). This relocation was confirmed by functional studies in 3T3‐L1 adipocytes. Collectively, these results suggest that AQP7 makes several contributions to adipocyte metabolism, in both cortical and intracellular membranes.
- Aalborg University Denmark
- Institute of Science Tokyo Japan
- Keio University Japan
- Aalborg University Library (AUB) Denmark
Adipocyte, Lipolysis, Adipocytes, White, 1-Acylglycerol-3-Phosphate O-Acyltransferase, Aquaporins, Cyclic AMP-Dependent Protein Kinases, Immunohistochemistry, Mice, Protein Transport, 3T3-L1 Cells, Animals, Aquaporin-7, Comparative gene identification 58
Adipocyte, Lipolysis, Adipocytes, White, 1-Acylglycerol-3-Phosphate O-Acyltransferase, Aquaporins, Cyclic AMP-Dependent Protein Kinases, Immunohistochemistry, Mice, Protein Transport, 3T3-L1 Cells, Animals, Aquaporin-7, Comparative gene identification 58
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