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- W2562604292 abstract "Background: The role of PPARβ/δ in colorectal cancer has been a hot topic for debate, with both tumor-promoting and anti-tumor roles been reported. Current studies on colorectal cancer have focused on either the whole intestine or on the major tissue type, the intestinal epithelium. In recent years, various studies have emphasized the pro-inflammatory and tumor promoting effects of tumor stroma in various cancers. However, the involvement of tumor stroma in adenocarcinoma development remains a largely unexplored realm of colorectal research. Hence, we hypothesized that PPARB/D expression in colorectal tumor stroma may play an important role in colorectal carcinogenesis.Methods: In this study, we aimed to investigate the role of PPARβ/δ in the colorectal tumor stroma. To study the role of the tumor stroma in vivo, we have adopted a model organism approach involving adult APCmin mice and AOM/DSS-treated wild-type mice models. We collected intestinal adenocarcinomas from these mice and extracted tumor stroma using microscopy-directed laser capture micro-dissection. The collected stroma were recovered for mRNA and analyzed for gene expression levels using real-time PCR.Results and conclusion: We observed contrasting trends in the PPARβ/δ mRNA expression, with elevated levels in stroma of APCmin adenocarcinoma but decreased in AOM/DSS-induced tumors. Our results to date demonstrate the heterogeneity of colorectal tumor stroma and provide an insight to the distinct differences between the two often co-studied murine models of colorectal carcinogenesis. We therefore plan to study if this trend is also observed in human colorectal tumor samples and in murine colorectal cancer models carrying stromal-specific deletion of PPARβ/δ expression.Citation Format: Eddie Han Pin Tan, Ming Keat Sng, Jeremy Soon Kiat Chan, Nguan Soon Tan. Heterogeneity of PPARβ/δ expression in colorectal tumor stroma. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 3211. doi:10.1158/1538-7445.AM2015-3211" @default.
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- W2562604292 date "2015-08-01" @default.
- W2562604292 modified "2023-10-15" @default.
- W2562604292 title "Abstract 3211: Heterogeneity of PPARβ/δ expression in colorectal tumor stroma" @default.
- W2562604292 doi "https://doi.org/10.1158/1538-7445.am2015-3211" @default.
- W2562604292 hasPublicationYear "2015" @default.
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