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ToolsOgunwobi, Olorunseun O. and Beales, Ian L. P. (2008) Globular adiponectin, acting via adiponectin receptor-1, inhibits leptin-stimulated oesophageal adenocarcinoma cell proliferation. Molecular and Cellular Endocrinology, 285 (1-2). pp. 43-50.
Full text not available from this repository. (Request a copy)Abstract
Obesity increases the risk of developing several cancers including oesophageal adenocarcinoma (OAC). Obesity is characterised by hyperleptinaemia and hypoadiponectinaemia: we have hypothesised that these hormonal factors may contribute to the progression of OAC. We have examined the effects of leptin and adiponectin on proliferation of OAC cells. Leptin-stimulated proliferation in four different OAC lines (OE33, OE19, BIC-1 and FLO) and this was inhibited by globular but not full length adiponectin. All four OAC lines expressed both adiponectin-receptor isoforms (AdipoR1 and AdipoR2). Globular adiponectin also inhibited leptin-induced proliferation in rat IEC-18 cells which only expressed AdipoR1. Specific inhibitors of 5′-AMP-activated protein kinase (Compound C) and serine/threonine phosphatases (okadaic acid) and a specific siRNA to AdipoR1 blocked the anti-proliferative effects of adiponectin. Adiponectin inhibited leptin-induced Akt phosphorylation; this action was sensitive to okadaic acid but not to Compound C. Adiponectin deficiency may contribute to the promotion of OAC in obesity.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Medicine and Health Sciences > Norwich Medical School |
| Depositing User: | EPrints Services |
| Date Deposited: | 25 Nov 2010 11:10 |
| Last Modified: | 12 Jan 2023 17:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/13383 |
| DOI: | 10.1016/j.mce.2008.01.023 |
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