What is the clinical evidence from this study?

Population: Neointima formation. Intervention: miR-31-5p knockdown vs. Control. Primary outcome: Cell migration, proliferation, and apoptosis (p=<0.05).

What question did this study set out to answer?

This study aims to investigate the role of miR-31-5p in regulating smooth muscle cell behavior to enhance vascular remodeling.

February 6, 2026European Heart Journal

MicroRNA-31-5p promotes vascular remodeling by modulating smooth muscle cell activity via STK40

Q: What are the key findings of this study?

Knockdown of miR-31-5p in human coronary artery smooth muscle cells significantly reduced migration and proliferation while increasing apoptosis via STK40 targeting (p<0.05).

Q: What question did this study set out to answer?

This study aims to investigate the role of miR-31-5p in regulating smooth muscle cell behavior to enhance vascular remodeling.

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Key result

miR-31-5p knockdown inhibits coronary smooth muscle cell proliferation and migration via STK40 targeting.

P<0.05

Key Points

This study aims to investigate the role of miR-31-5p in regulating smooth muscle cell behavior to enhance vascular remodeling.
C57BL/6J male mice underwent wire-induced femoral artery injury for analysis.
miRNA expression was measured at days 7 and 21 post-injury using qRT-PCR.
In vitro studies assessed the effects of miR-31-5p on migration, proliferation, and apoptosis via lipotransfection.
RNA sequencing identified target genes of miR-31-5p, particularly STK40.
miR-31-5p was significantly upregulated in neointimal tissue (p<0.0001).
In HCASMC, miR-31-5p knockdown decreased migration (p<0.01) and proliferation (p<0.05), while increasing apoptosis (p<0.05).
STK40 and LATS2 were confirmed as direct targets of miR-31-5p, downregulated by anti-miR-31-5p transfection (p<0.01 and p<0.05).
STK40 knockdown resulted in reduced apoptosis in HCASMC (p<0.05).

Structured PICO

Population

Basic science study evaluating the role of miR-31-5p in neointima formation using a murine femoral artery injury model and human coronary artery cells.

Intervention

miR-31-5p knockdown (anti-miR-31-5p transfection) and STK40 knockdown (siRNA)

Outcome

miR-31-5p expression, cell migration, proliferation, apoptosis, and target gene expression (STK40, LATS2, GXYLT1)surrogate

Main Result

p-value: p=<0.05

Discussion

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Implication

miR-31-5p is upregulated during neointima formation and its knockdown mitigates smooth muscle cell dysfunction by targeting STK40, suggesting a potential therapeutic target for vascular remodeling after angioplasty.

Cite This Study

Kalies et al. (2025) studied Neointima formation. miR-31-5p knockdown vs. Control was evaluated on Cell migration, proliferation, and apoptosis (p=<0.05). Knockdown of miR-31-5p in human coronary artery smooth muscle cells significantly reduced migration and proliferation while increasing apoptosis via STK40 targeting (p<0.05).

synapsesocial.com/papers/698586238f7c464f2300a190 https://doi.org/10.1093/eurheartj/ehaf784.4866

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MicroRNA-31-5p promotes vascular remodeling by modulating smooth muscle cell activity via STK40

Key Points

Structured PICO

Main Result

Discussion

Implication

Cite This Study

MicroRNA-31-5p promotes vascular remodeling by modulating smooth muscle cell activity via STK40

Key Points

Structured PICO

Main Result

Discussion

Implication

Cite This Study

Also Consider

Also Consider