Abstract
Background: Restenosis (RS) poses a significant concern, leading to recurrent ischemia and the potential for amputation following intraluminal angioplasty in the treatment of Peripheral Artery Disease (PAD). Through microRNA microarray analysis, the study detected a significant downregulation of miR-199a-5p within arterial smooth muscle cells (ASMCs) associated with RS.
Objective: This research aims to explore the possible function and the underlying mechanisms of miR-199a-5p in the context of RS.
Methods: Primary ASMCs were extracted from the femoral arteries of both healthy individuals and patients with PAD or RS. The expression levels of miR-199a-5p were assessed using both qRT-PCR and in situ hybridization techniques. To examine the impacts of miR-199a-5p, a series of experiments were performed, including flow cytometry, TUNEL assay, EdU assay, CCK8 assay, Transwell assay, and wound closure assay. A rat carotid balloon injury model was employed to elucidate the mechanism through which miR-199a-5p mitigated neointimal hyperplasia.
Results: MiR-199a-5p exhibited downregulation in RS patients and was predominantly expressed within ASMCs. Elevated the expression of miR-199a-5p resulted in an inhibitory effect of proliferation and migration in ASMCs. Immunohistochemistry and a dual-luciferase reporter assay uncovered that RS exhibited elevated expression levels of both HIF-1α and E2F3, and they were identified as target genes regulated by miR-199a-5p. The co-transfection of lentiviruses carrying HIF-1α and E2F3 alongside miR-199a-5p further elucidated their role in the cellular responses mediated by miR-199a-5p. In vivo, the delivery of miR-199a-5p via lentivirus led to the mitigation of neointimal formation following angioplasty, achieved by targeting HIF-1α and E2F3.Conclusion: MiR-199a-5p exhibits promise as a prospective therapeutic target for RS since it alleviates the condition by inhibiting the proliferation and migration of ASMCs via its regulation of HIF-1α and E2F3.
Keywords: Peripheral Artery Disease, Restenosis, Arterial Smooth Muscle Cells, miR-199a-5p, HIF-1α, E2F3.
[http://dx.doi.org/10.1161/ATVBAHA.120.314595] [PMID: 32580632]
[http://dx.doi.org/10.1016/j.ejvs.2006.09.024] [PMID: 17140820]
[http://dx.doi.org/10.1177/1358863X20988780] [PMID: 33627058]
[http://dx.doi.org/10.1177/1358863X20967091] [PMID: 33256573]
[http://dx.doi.org/10.1016/j.pmr.2013.09.001] [PMID: 24287235]
[http://dx.doi.org/10.1161/ATVBAHA.117.310051] [PMID: 29025709]
[http://dx.doi.org/10.1002/1873-3468.12606] [PMID: 28235243]
[http://dx.doi.org/10.1016/j.jjcc.2011.07.004] [PMID: 21839616]
[http://dx.doi.org/10.1161/JAHA.118.011245] [PMID: 30561254]
[http://dx.doi.org/10.5551/jat.30775] [PMID: 26370316]
[http://dx.doi.org/10.1161/CIRCRESAHA.114.302213] [PMID: 24255059]
[http://dx.doi.org/10.1093/cvr/cvv141] [PMID: 25994172]
[http://dx.doi.org/10.3390/ijms241814277] [PMID: 37762578]
[http://dx.doi.org/10.1016/j.lfs.2021.119365] [PMID: 33741416]
[http://dx.doi.org/10.1038/srep35302] [PMID: 27731400]
[http://dx.doi.org/10.1096/fj.202301836R] [PMID: 38243682]
[http://dx.doi.org/10.1161/STROKEAHA.115.010567] [PMID: 26451018]
[http://dx.doi.org/10.1161/ATVBAHA.111.229559] [PMID: 21817107]
[http://dx.doi.org/10.1093/cvr/cvv160] [PMID: 26025955]
[http://dx.doi.org/10.1161/CIRCULATIONAHA.117.027799] [PMID: 29246895]
[http://dx.doi.org/10.1186/s12974-024-03070-2] [PMID: 38555419]
[http://dx.doi.org/10.1093/cvr/cvu061] [PMID: 24623277]
[http://dx.doi.org/10.1161/CIRCULATIONAHA.107.715847] [PMID: 18040029]
[http://dx.doi.org/10.1073/pnas.0911921106] [PMID: 19948968]
[http://dx.doi.org/10.1007/s10565-022-09732-2] [PMID: 35930100]
[http://dx.doi.org/10.1016/j.jvs.2014.12.007] [PMID: 25721067]
[http://dx.doi.org/10.1093/eurheartj/ehv006] [PMID: 25650396]
[http://dx.doi.org/10.1161/CIRCRESAHA.115.306300] [PMID: 26892968]
[http://dx.doi.org/10.1161/CIRCRESAHA.109.197517] [PMID: 19542014]
[http://dx.doi.org/10.1016/j.vph.2016.12.002] [PMID: 27993686]
[http://dx.doi.org/10.1517/14728222.2013.745512] [PMID: 23339529]
[http://dx.doi.org/10.1016/j.bbrc.2016.03.140] [PMID: 27038547]
[http://dx.doi.org/10.1164/rccm.201306-1151OC] [PMID: 24299514]
[http://dx.doi.org/10.1186/s13045-019-0773-y] [PMID: 31488218]
[http://dx.doi.org/10.3892/mmr.2021.12266] [PMID: 34212977]
[http://dx.doi.org/10.1002/jcb.28791] [PMID: 31038761]
[http://dx.doi.org/10.1159/000430252] [PMID: 26430741]
[http://dx.doi.org/10.1161/CIRCRESAHA.115.306361] [PMID: 26892967]
[http://dx.doi.org/10.1073/pnas.92.12.5510] [PMID: 7539918]
[http://dx.doi.org/10.1038/onc.2009.441] [PMID: 19946328]
[http://dx.doi.org/10.1002/ijc.29519] [PMID: 25784597]
[http://dx.doi.org/10.1161/HYPERTENSIONAHA.115.05886] [PMID: 26483345]
[http://dx.doi.org/10.1161/ATVBAHA.108.183319] [PMID: 19251587]
[http://dx.doi.org/10.1161/ATVBAHA.116.307830] [PMID: 27444197]
[http://dx.doi.org/10.18632/oncotarget.17364] [PMID: 28947999]
[http://dx.doi.org/10.1161/STROKEAHA.119.026112] [PMID: 31500558]
[http://dx.doi.org/10.1016/j.gene.2021.145796] [PMID: 34175393]