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Adipose-derived Stem Cells Ameliorate Radiation-induced Lung Injury by Activating the DDAH1/ADMA/eNOS Signaling Pathway

Overview
Journal Regen Ther
Date 2024 May 2
PMID 38694446
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Abstract

Background: Ionizing radiation-induced lung injury is caused by the initial inflammatory reaction and leads to advanced fibrosis of lung tissue. Adipose-derived stem cells (ASCs) are a type of mesenchymal stem cell that can differentiate into various functional cell types with broad application prospects in the treatment of tissue damage. The purpose of this study was to explore the protective effect of ASCs against radiation-induced lung injury and to provide a novel basis for prevention and treatment of radiation-induced lung injury.

Materials And Methods: Fifty mice were randomly divided into a control group (Ctrl), radiation exposure group (IR), radiation exposure plus ASC treatment group (IR + ASC), radiation exposure plus L-257 group (IR + L-257), and radiation exposure plus ASC treatment and L-257 group (IR + ASC + L-257). Mice in IR, IR + ASC, and IR + ASC + L-257 groups were exposed to a single whole-body dose of 5 Gy X-rays (160 kV/25 mA, 1.25 Gy/min). Within 2 h after irradiation, mice in IR + ASC and IR + ASC + L-257 groups were injected with 5 × 10 ASCs via the tail vein. Mice in IR + L-257 and IR + ASC + L-257 groups were intraperitoneally injected with 30 mg/kg L-257 in 0.5 mL saline.

Results: The mice in the IR group exhibited lung hemorrhage, edema, pulmonary fibrosis, and inflammatory cell infiltration, increased release of proinflammatory cytokines, elevation of oxidative stress and apoptosis, and inhibition of the dimethylarginine dimethylamino hydratase 1 (DDAH1)/ADMA/eNOS signaling pathway. ASC treatment alleviated radiation-induced oxidative stress, apoptosis, and inflammation, and restored the DDAH1/ADMA/eNOS signaling pathway. However, L-257 pretreatment offset the protective effect of ASCs against lung inflammation, oxidative stress, and apoptosis.

Conclusions: These data suggest that ASCs ameliorate radiation-induced lung injury, and the mechanism may be mediated through the DDAH1/ADMA/eNOS signaling pathway.

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References
1.
Lee M, Tsai K, Hsu J, Shin S, Wu J, Yeh J . Liraglutide prevents and reverses monocrotaline-induced pulmonary arterial hypertension by suppressing ET-1 and enhancing eNOS/sGC/PKG pathways. Sci Rep. 2016; 6:31788. PMC: 5007506. DOI: 10.1038/srep31788. View

2.
Radwan S, Ghoneim D, Salem M, Saeed M, Saleh Y, Elhamy M . Adipose Tissue-Derived Mesenchymal Stem Cells Protect Against Amiodarone-Induced Lung Injury in Rats. Appl Biochem Biotechnol. 2020; 191(3):1027-1041. DOI: 10.1007/s12010-020-03227-8. View

3.
Lin Y, Li X, Fan C, Yang F, Hao D, Ge W . Cardioprotective effects of rat adipose‑derived stem cells differ under normoxic/physioxic conditions and are associated with paracrine factor secretion. Int J Mol Med. 2020; 45(5):1591-1600. DOI: 10.3892/ijmm.2020.4524. View

4.
Gao P, Yang X, Mungur L, Kampo S, Wen Q . Adipose tissue-derived stem cells attenuate acute lung injury through eNOS and eNOS-derived NO. Int J Mol Med. 2013; 31(6):1313-8. DOI: 10.3892/ijmm.2013.1328. View

5.
Hoke N, Salloum F, Kass D, Das A, Kukreja R . Preconditioning by phosphodiesterase-5 inhibition improves therapeutic efficacy of adipose-derived stem cells following myocardial infarction in mice. Stem Cells. 2011; 30(2):326-35. DOI: 10.1002/stem.789. View