Volume 59, Issue 10 pp. 2523-2534
ORIGINAL ARTICLE

Adipose mesenchymal stem cells-derived exosomes attenuated hyperoxia-induced lung injury in neonatal rats via inhibiting the NF-κB signaling pathway

Cuie Chen MD

Cuie Chen MD

Department of Pediatrics, Yiwu Maternity and Children Hospital, Jinhua, Zhejiang, China

Contribution: Conceptualization, Methodology, ​Investigation, Funding acquisition, Writing - original draft

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Yuxia Jin MD

Yuxia Jin MD

Department of Prenatal Diagnostic Center, Yiwu Maternity and Children Hospital, Jinhua, Zhejiang, China

Contribution: ​Investigation, Methodology, Validation, Visualization, Funding acquisition

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Hongxing Jin BS

Hongxing Jin BS

Department of Pediatrics, Yiwu Maternity and Children Hospital, Jinhua, Zhejiang, China

Contribution: ​Investigation, Methodology, Validation

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Shujun Chen BS

Shujun Chen BS

Department of Pediatrics, Yiwu Maternity and Children Hospital, Jinhua, Zhejiang, China

Contribution: Methodology, Validation, Visualization, Software

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Lu Wang BS

Lu Wang BS

Department of Prenatal Diagnostic Center, Yiwu Maternity and Children Hospital, Jinhua, Zhejiang, China

Contribution: Validation, Visualization, Software, Formal analysis

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Liuqing Ji BS

Liuqing Ji BS

Department of Pediatrics, Yiwu Maternity and Children Hospital, Jinhua, Zhejiang, China

Contribution: Validation, Visualization, Software, Formal analysis

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Shi Wang MD

Shi Wang MD

Department of Anesthesiology, Women's Hospital School of Medicine Zhejiang University, Hangzhou, Zhejiang, China

Contribution: Project administration, Data curation, Supervision, Resources

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Xixi Zhang BS

Xixi Zhang BS

Department of Pediatrics, Yuhuan People's Hospital, Taizhou, Zhejiang, China

Contribution: Data curation, Supervision, Resources

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Anqun Sheng MD

Anqun Sheng MD

Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

Contribution: Data curation, Software, Formal analysis

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Yuanyuan Sun PhD

Corresponding Author

Yuanyuan Sun PhD

Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China

Department of Pediatrics, The Quzhou Affiliated Hospital of Wenzhou Medical University (Quzhou People's Hospital), Quzhou, Zhejiang, China

Correspondence Yuanyuan Sun, Department of Pediatrics, The Quzhou Affiliated Hospital of Wenzhou Medical University (Quzhou People's Hospital), No. 100, Minjiang Ave, Kecheng Smart New City, Quzhou, Zhejiang 324000, China.

Email: [email protected]

Contribution: Conceptualization, ​Investigation, Writing - original draft, Funding acquisition, Writing - review & editing

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First published: 21 May 2024
Citations: 4

Cuie Chen and Yuxia Jin contributed equally to this study and are co-first authors.

Abstract

Objective

Bronchopulmonary dysplasia (BPD) is the most common chronic morbidity in extremely preterm infants. Mesenchymal stem cells-derived exosomes (MSC-Exos) therapies have shown prospects in animal models of BPD. Our study aimed to evaluate the effect of adipose mesenchymal stem cells-derived exosomes (AMSC-Exos) on BPD and the role of the NF-κB signaling pathway in this process.

Methods

The AMSCs were extracted and AMSC-Exos were isolated by ultracentrifugation method. Newborn rats were exposed to hyperoxia (90% O2) continuously for 7 days to establish a BPD model. The rats were treated with AMSC-Exos by intratracheal administration on postnatal day 4 (P4). Pulmonary morphology, pulmonary vasculature, inflammatory factors, and NF-κB were assessed. Hyperoxia-induced primary type II alveolar epithelial cells (AECIIs) and AMSC-Exos treatment with or without a pan-NF-κB inhibitor (PDTC) were established to explore the potential mechanism.

Results

Hyperoxia-exposed rats showed alveolar simplification with decreased radial alveolar count and increased mean linear intercept, low CD31, and vascular endothelial growth factor expression, reduced microvessel density, increased the expression of TNF-α, IL-1β, and IL-6 and decreased the expression of IL-10, and induced NF-κB phosphorylation. AMSC-Exos protected the neonatal lung from the hyperoxia-induced arrest of alveolar and vascular development, alleviated inflammation, and inhibited NF-κB phosphorylation. Hyperoxia decreased viability, increased apoptosis, enhanced inflammation, and induced NF-κB phosphorylation of AECIIs but improved by AMSC-Exos, PDTC, or AMSC-Exos+PDTC. The effect of AMSC-Exos+PDTC in AECIIs was the same as AMSC-Exos, but more notable than PDTC alone.

Conclusion

AMSC-Exos attenuated the hyperoxia-induced lung injury in neonatal rats by inhibiting the NF-κB signaling pathway partly.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

The data that supports the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.