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Dietary methionine restriction impairs anti-tumor immunity through gut microbiota

ABSTRACT: Dietary methionine restriction represses growth and improves therapeutic responses in several pre-clinical settings. However, how this dietary intervention impacts cancer progression in the context of the immune system is unknown. Here we analyzed the CD45+ immune cells from the small intestine of control (CTRL) diet or methionine-restricted (MR) diet fed tumor-free C57BL/6J donor mice and tumor-bearing Apc recipient mice transplanated with feces from these diet-fed tumor-free C57BL/6J mice by scRNA-seq. Our analysis indicate that fecal microbes from methionine-restricted tumor-free C57BL/6J mice are sufficient to represss T cell activation in the small intestine of Apc mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE181220 | GEO | 2023/06/14

REPOSITORIES: GEO

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Project description:Transcriptional Profiling of the Transition from Normal Intestine to Adenoma in the APC(Min/+) Mouse. Tissue was from male 91-days old APC(Min/+) mouse (an animal model for human colon cancer). RNA was purified using Trizol and labeled for hybridization to high density oligonucleotide Affymetrix MG_U74Av2 arrays, using manufacturer protocol. We measured the relative expression level of >12000 genes and ESTs. ----------------------------------------- Samples used in analysis: * GSM12501: Normal intestine diet #1 sample C1_0112 Dnmt+/- Min/+ * GSM12502: Tumor diet #1 sample T1_0112 Dnmt+/- Min/+ * GSM12503: Normal intestine diet #1 sample C2_0112 Dnmt+/+ Min/+ * GSM12504: Tumor diet #1 sample T2_0112 Dnmt+/+ Min/+ * GSM12505: Normal intestine diet #2 sample C1_003 Dnmt+/- Min/+ * GSM12506: Tumor diet #2 sample T1_003 Dnmt+/- Min/+ * GSM12507: Normal intestine diet #2 sample C2_003 Dnmt+/+ Min/+ * GSM12508: Tumor diet #2 sample T2_003 Dnmt+/+ Min/+ * GSM12509: Normal intestine diet #3 sample C1_005 Dnmt+/- Min/+ * GSM12510: Tumor diet #3 sample T1_005 Dnmt+/- Min/+ * GSM12511: Normal intestine diet #3 sample C2_005 Dnmt+/+ Min/+ * GSM12512: Tumor diet #3 sample T2_005 Dnmt+/+ Min/+ - - - - - - - - - - - - - - - - - - - - - Comparisons were performed as described in Chen Z, Ge B, Hudson TJ and Rozen R. Gene Expression Patterns 1, 89-93, 2002. Comparing Normal intestine vs Adenoma. - - - - - - - - - - - - - - - - - - - - - This resulted in the identification of differentially expressed transcripts. Identified transcripts were clustered based on functional information which was publicly available at time of analysis, obtained through the NetAffx WEB portal (www.Affymetrix.com) and literature. Keywords = Mouse Keywords = Min Keywords = normal Keywords = intestine Keywords = tumor Keywords = tumour Keywords = colon cancer Keywords = gene expression Keywords = beta-catenin Keywords = high density oligonucleotide microarrays Keywords = familial adenomatous polyposis Keywords = FAP Keywords = colorectal cancer Keywords = Affymetrix MGU74Av2 GeneChip probe array Keywords = mouse model Keywords = APC Keywords = adenomatous polyposis coli Keywords: ordered

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Dietary methionine restriction impairs anti-tumor immunity through gut microbiota

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