Evaluation of Murine Host Sex As a Biological Variable in Transplanted Human Intestinal Organoid Development

Overview

Journal Dig Dis Sci

Specialty Gastroenterology

Date 2022 Mar 25

PMID 35334015

Authors

Eoin P Mcneill

Vikas S Gupta

David J Sequeira

Noah F Shroyer

Allison L Speer

Affiliations

Soon will be listed here.

Abstract

Background: Human intestinal organoids (HIOs), when transplanted into immunocompromised mice (tHIOs), demonstrate significant growth and maturation. While both male and female mice are reported to be viable hosts for these experiments, a direct comparison of sex-related differences in tHIO structure and development has not been performed.

Aims: We sought to identify host sex-related differences in tHIO engraftment, morphology, and epithelial and mesenchymal development.

Methods: HIOs were generated in vitro and transplanted beneath the kidney capsule of NSG male and female mice. tHIOs were harvested at 8-9 weeks. Anthropometric measurements were captured. tHIOs were divided in half and histology or RT-qPCR performed. Morphology was evaluated and epithelial architecture graded on a scale of 1 (absence of crypts/villi) to 4 (elongated crypt-villus axis). RT-qPCR and immunofluorescence microscopy were performed for epithelial and mesenchymal differentiation markers.

Results: Host survival and tHIO engraftment were equivalent in male and female hosts. tHIO weight and length were also equivalent between groups. The number of lumens per tHIOs from male and female hosts was similar, but the mean lumen circumference was larger for tHIOs from male hosts. tHIOs from male hosts were more likely to demonstrate higher grades of epithelial development. However, both groups showed similar differentiation into secretory and absorptive epithelial lineages. Markers for intestinal identity, mesenchymal development, and brush border enzymes were also expressed similarly between groups.

Conclusions: While male host sex was associated with larger tHIO lumen size and mucosal maturation, tHIOs from both groups had similar engraftment, growth, and epithelial and mesenchymal cytodifferentiation.

Citing Articles

Investigation of murine host sex as a biological variable in epithelial barrier function and muscle contractility in human intestinal organoids.

Beanland B, Mcneill E, Sequeira D, Xue H, Shroyer N, Speer A FASEB J. 2022; 36(11):e22613.

PMID: 36250916 PMC: 9645459. DOI: 10.1096/fj.202101740RR.

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