The Immune Response to Arterial Damage in a Mouse Model of Intermittent Hypoxia: a Transcriptomics Analysis

Overview

Journal Sleep Breath

Publisher Springer

Date 2023 Jun 30

PMID 37391539

Authors

Chong Xu

Xiangyu Cheng

Xiaoting Wang

Weijun Huang

Yupu Liu

Haibo Ye

Jian Guan

Jinhong Shen

Hongliang Yi

Affiliations

Soon will be listed here.

Abstract

Purpose: Mice can develop arterial damage and even atherosclerosis under intermittent hypoxia (IH); however, the specific mechanism of arterial damage induced by IH remains unclear. Hence, this research aimed to illustrate the underlying mechanism linking IH to arterial injury.

Materials And Methods: The differential gene expression of the thoracic aorta under normoxia or IH mice was analyzed utilizing RNA sequencing. Furthermore, GO, KEGG pathway, and CIBERSORT analyses were carried out. For verification of the expression of candidate genes affected by IH, quantitative RT-qPCR (qRT-PCR) was conducted. Immunohistochemical (IHC) staining revealed immune cell infiltration in the thoracic aorta.

Results: The thickness of the intima-media of the mouse aorta was increased, and the fiber structure was disordered under IH. Transcriptomics analysis showed that in the aorta, 1137 upregulated genes and 707 downregulated genes were affected by IH, significantly related to the activation of the immune system and cell adhesion. Furthermore, B cell infiltration around the aorta was observed under IH.

Conclusions: IH might lead to structural changes in the aorta by activating the immune response and enhancing cell adhesion.

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