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Colitis-induced colorectal cancer and intestinal epithelial estrogen receptor beta impact gut microbiota diversity
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Proteinvetenskap, Cellulär och klinisk proteomik. KTH, Centra, Science for Life Laboratory, SciLifeLab. (Williams)
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Proteinvetenskap, Cellulär och klinisk proteomik. KTH, Centra, Science for Life Laboratory, SciLifeLab. (Williams)
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2019 (engelsk)Inngår i: International Journal of Cancer, ISSN 0020-7136, E-ISSN 1097-0215, Vol. 144, nr 12, s. 3086-3098Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Chronic inflammation of the colon (colitis) is a risk factor for colorectal cancer (CRC). Hormone-replacement therapy reduces CRC incidences, and the estrogen receptor beta (ERβ/ESR2) has been implicated in this protection. Gut microbiota is altered in both colitis and CRC and may influence the severity of both. Here we test the hypothesis that intestinal ERβ impacts the gut microbiota. Mice with and without intestine-specific deletion of ERβ (ERβKOVil ) were generated using the Cre-LoxP system. Colitis and CRC were induced with a single intraperitoneal injection of azoxymethane (AOM) followed by administration of three cycles of dextran sulfate sodium (DSS) in drinking water. The microbiota population were characterized by high-throughput 16S rRNA gene sequencing of DNA extracted from fecal samples (N = 39). Differences in the microbiota due to AOM/DSS and absence of ERβ were identified through bioinformatic analyses of the 16S-Seq data, and the distribution of bacterial species was corroborated using qPCR. We demonstrate that colitis-induced CRC reduced the gut microbiota diversity and that loss of ERβ enhanced this process. Further, the Bacteroidetes genus Prevotellaceae_UCG_001 was overrepresented in AOM/DSS mice compared to untreated controls (3.5-fold, p = 0.004), and this was enhanced in females and in ERβKOVil mice. Overall, AOM/DSS enriched for microbiota impacting immune system diseases and metabolic functions, and lack of ERβ in combination with AOM/DSS enriched for microbiota impacting carbohydrate metabolism and cell motility, while reducing those impacting the endocrine system. Our data support that intestinal ERβ contributes to a more favorable microbiome that could attenuate CRC development.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2019. Vol. 144, nr 12, s. 3086-3098
Emneord [en]
AOM/DSS model, colitis-associated colon cancer, estrogen receptor beta, microbiota
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Identifikatorer
URN: urn:nbn:se:kth:diva-244808DOI: 10.1002/ijc.32037ISI: 000466449100019PubMedID: 30515752Scopus ID: 2-s2.0-85059884325OAI: oai:DiVA.org:kth-244808DiVA, id: diva2:1292085
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QC 20190304

Tilgjengelig fra: 2019-02-27 Laget: 2019-02-27 Sist oppdatert: 2019-05-20bibliografisk kontrollert

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Ibrahim, AhmedWilliams, Cecilia

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