Effect of Hypoxia on Branching Characteristics and Cell Subpopulations During Kidney Organ Culture

Overview

Journal Bioengineering (Basel)

Date 2022 Dec 23

PMID 36551007

Authors

Morgan Hamon

Hsiao-Min Cheng

Ming Johnson

Norimoto Yanagawa

Peter V Hauser

Affiliations

Soon will be listed here.

Abstract

During early developmental stages, embryonic kidneys are not fully vascularized and are potentially exposed to hypoxic conditions, which is known to influence cell proliferation and survival, ureteric bud branching, and vascularization of the developing kidney. To optimize the culture conditions of in vitro cultured kidneys and gain further insight into the effect of hypoxia on kidney development, we exposed mouse embryonic kidneys isolated at E11.5, E12.5, and E13.5 to hypoxic and normal culture conditions and compared ureteric bud branching patterns, the growth of the progenitor subpopulation hoxb7+, and the expression patterns of progenitor and differentiation markers. Branching patterns were quantified using whole organ confocal imaging and gradient-vector-based analysis. In our model, hypoxia causes an earlier expression of UB tip cell markers, and a delay in stalk cell marker gene expression. The metanephric mesenchyme (MM) exhibited a later expression of differentiation marker FGF8, marking a delay in nephron formation. Hypoxia further delayed the expression of stroma cell progenitor markers, a delay in cortical differentiation markers, as well as an earlier expression of medullary and ureteral differentiation markers. We conclude that standard conditions do not apply universally and that tissue engineering strategies need to optimize suitable culture conditions for each application. We also conclude that adapting culture conditions to specific aspects of organ development in tissue engineering can help to improve individual stages of tissue generation.

Citing Articles

Advances in Organoid Research and Developmental Engineering.

Hauser P Bioengineering (Basel). 2025; 11(12.

PMID: 39768093 PMC: 11673862. DOI: 10.3390/bioengineering11121275.

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