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- W2935684920 abstract "Oesophageal adenocarcinoma (OAC) is an exemplar model of obesity-associated cancer. Response to neoadjuvant chemoradiotherapy (NA CRT) is a clinical challenge. We examined if visceral adipose tissue and obesity status alter radiosensitivity in OAC. The radioresistant (OE33R) and radioresponsive (OE33P) OAC isogenic model was cultured with adipose tissue conditioned media from three patient cohorts: non-cancer patients, surgery only OAC patients and NA CRT OAC patients. Cell survival was characterised by clonogenic assay, metabolomic profiling by nuclear magnetic resonance spectroscopy and adipokine receptor gene expression by qPCR. A retrospective in vivo study compared tumour response to NA CRT in normal weight (n=53) versus overweight/obese patients (n=148). Adipose conditioned media (ACM) from all patient cohorts significantly increased radiosensitivity in radioresistant OE33R cells. ACM from the NA CRT OAC cohort increased radiosensitivity in OE33P cells. Metabolomic profiling demonstrated separation of the non-cancer and surgery only OAC cohorts and between the non-cancer and NA CRT OAC cohorts. Gene expression profiling of OE33P versus OE33R cells demonstrated differential expression of the adiponectin receptor-1 (AR1), adiponectin receptor-2 (AR2), leptin receptor (LepR) and neuropilin receptor-1 (NRP1) genes. In vivo overweight/obese OAC patients achieved an enhanced tumour response following NA CRT compared to normal weight patients. This study demonstrates that visceral adipose tissue modulates the cellular response to radiation in OAC." @default.
- W2935684920 created "2019-04-25" @default.
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- W2935684920 date "2019-01-01" @default.
- W2935684920 modified "2023-10-16" @default.
- W2935684920 title "Visceral Adipose Tissue Modulates Radiosensitivity in Oesophageal Adenocarcinoma" @default.
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- W2935684920 doi "https://doi.org/10.7150/ijms.29296" @default.
- W2935684920 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6535661" @default.
- W2935684920 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31171903" @default.
- W2935684920 hasPublicationYear "2019" @default.
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