ArticleTissue engineering and regenerative medicine2026
Dual-Drug Stent with Sirolimus and WKYMVm Promotes Endothelialization and Limits Hyperplasia.
Article in Tissue engineering and regenerative medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundConventional drug-eluting stents suppress neointimal hyperplasia but delay re-endothelialization, raising long-term safety concerns. This study developed and evaluated a sirolimus-WKYMVm eluting stent (S-WES) to simultaneously promote re-endothelialization and suppress neointimal hyperplasia.
methodsSirolimus-eluting stents (SES), WKYMVm-eluting stents (WES), and S-WES were fabricated using electrospray. Surface morphology was characterized via scanning electron microscopy (SEM), and in vitro drug-release kinetics were determined using high-performance liquid chromatography. Biological efficacy was assessed using human umbilical vein endothelial cell (HUVEC) and smooth muscle cell (SMC) assays. In vivo performance was evaluated over 4 weeks, followed by optical coherence tomography (OCT) and histopathological analysis.
resultsSEM analysis showed that S-WES had a uniform, crack-free polymer coating. Each stent was consistently loaded with sirolimus (105.15 ± 25.54 μg) and WKYMVm (1.07 ± 0.18 μg), yielding a dual drug-release profile. WKYMVm was almost completely released within 7 days, whereas sirolimus showed sustained release (day 1: 22.43 ± 5.32%, day 28: 94.38 ± 4.11%). In vitro assays showed that sirolimus suppressed SMC migration and HUVEC proliferation, while WKYMVm significantly enhanced HUVEC proliferation. In vivo OCT revealed reduced neointimal hyperplasia in the S-WES group (29.64 ± 8.66 μm
conclusionThe sirolimus-WKYMVm dual-drug stent enhances re-endothelialization and inhibits neointimal hyperplasia, thereby offering a promising strategy for improving the efficacy and long-term safety of cardiovascular stents.
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