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Targeting Senescent Alveolar Epithelial Cells Using Engineered Mesenchymal Stem Cell-Derived Extracellular Vesicles To Treat Pulmonary Fibrosis

Abstract

Type 2 alveolar epithelial cell (AEC2) senescence is crucial to the pathogenesis of pulmonary fibrosis (PF). The nicotinamide adenine dinucleotide (NAD)-consuming enzyme cluster of differentiation 38 (CD38) is a marker of senescent cells and is highly expressed in AEC2s of patients with PF, thus rendering it a potential treatment target. Umbilical cord mesenchymal stem cell (MSC)-derived extracellular vesicles (MSC-EVs) have emerged as a cell-free treatment with clinical application prospects in antiaging and antifibrosis treatments. Herein, we constructed CD38 antigen receptor membrane-modified MSC-EVs (CD38-ARM-MSC-EVs) by transfecting MSCs with a lentivirus loaded with a CD38 antigen receptor-CD8 transmembrane fragment fusion plasmid to target AEC2s and alleviate PF. Compared with MSC-EVs, the CD38-ARM-MSC-EVs engineered in this study showed a higher expression of the CD38 antigen receptor and antifibrotic miRNAs and targeted senescent AEC2s cells highly expressing CD38 in vitro and in naturally aged mouse models after intraperitoneal administration. CD38-ARM-MSC-EVs effectively restored the NAD levels, reversed the epithelial-mesenchymal transition phenotype, and rejuvenated senescent A549 cells in vitro, thereby mitigating multiple age-associated phenotypes and alleviating PF in aged mice. Thus, this study provides a technology to engineer MSC-EVs and support our CD38-ARM-MSC-EVs to be developed as promising agents with high clinical potential against PF.

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References
1.
Camacho-Pereira J, Tarrago M, Chini C, Nin V, Escande C, Warner G . CD38 Dictates Age-Related NAD Decline and Mitochondrial Dysfunction through an SIRT3-Dependent Mechanism. Cell Metab. 2016; 23(6):1127-1139. PMC: 4911708. DOI: 10.1016/j.cmet.2016.05.006. View

2.
Fang T, Yang J, Liu L, Xiao H, Wei X . Nicotinamide mononucleotide ameliorates senescence in alveolar epithelial cells. MedComm (2020). 2021; 2(2):279-287. PMC: 8491199. DOI: 10.1002/mco2.62. View

3.
Sengupta V, Sengupta S, Lazo A, Woods P, Nolan A, Bremer N . Exosomes Derived from Bone Marrow Mesenchymal Stem Cells as Treatment for Severe COVID-19. Stem Cells Dev. 2020; 29(12):747-754. PMC: 7310206. DOI: 10.1089/scd.2020.0080. View

4.
Desai T, Brownfield D, Krasnow M . Alveolar progenitor and stem cells in lung development, renewal and cancer. Nature. 2014; 507(7491):190-4. PMC: 4013278. DOI: 10.1038/nature12930. View

5.
Drent E, Themeli M, Poels R, de Jong-Korlaar R, Yuan H, de Bruijn J . A Rational Strategy for Reducing On-Target Off-Tumor Effects of CD38-Chimeric Antigen Receptors by Affinity Optimization. Mol Ther. 2017; 25(8):1946-1958. PMC: 5542711. DOI: 10.1016/j.ymthe.2017.04.024. View