Ismail Muhamad T, Setianto Budi Y, Haryana Sofia M, Anggrahini Dyah W
Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Department of Cell Histology and Biology, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Int J Angiol. 2025 Jan 13;34(2):83-91. doi: 10.1055/a-2504-1911. eCollection 2025 Jun.
Chronic limb-threatening ischemia (CLTI) represents poses a substantial threat with escalating mortality and amputation rates. Despite the existence of various clinical techniques for diagnosing CLTI, the role of microRNAs (miRNAs) in arteriogenesis remains ambiguous. Comprehensive knowledge on miRNAs may facilitate the advancement of targeted therapy pertaining to the enhancement of collateral blood flow in obstructed vessels. Therefore, this study aimed at analyzing arteriogenesis-associated plasma miRNA profiles in patients with CLTI using gene expression. Samples were acquired from the collateral arteries (CA group, = 3) and the contralateral healthy limb (healthy artery; HA group, = 3) of a single set of patients with CLTI. The RNA extracted from the samples was assessed for concentration and purity. A normalization factor was used to address variations in analyte abundance and/or quality across the samples. Subsequently, individual RNA molecules were directly quantified and subjected to comparative analysis between the CA and HA groups to identify the miRNAs involved in arteriogenesis. The five arteriogenesis-related miRNAs exhibiting maximum upregulation were miR-301b-3p, miR-221-5p, miR-639, miR-34a-5p, and let-7a-5p, while the five most downregulated miRNAs included miR-151a-5p, miR-371a-5p, miR-651-5p, miR-510-5p, and miR-660-5p. Summarily, this study documented marked upregulation and downregulation of miRNAs associated with arteriogenesis in the collateral arteries of patients with CLTI as compared with their contralateral healthy limbs. Possible mechanisms involved, including the regulation of YAP/TAZ pathway, TGFBR3 mRNA, SIRT1 expression, and other processes have shown to be modulated by miRNAs fluctuations.
慢性肢体威胁性缺血(CLTI)死亡率和截肢率不断上升,构成了重大威胁。尽管存在多种诊断CLTI的临床技术,但微小RNA(miRNA)在动脉生成中的作用仍不明确。对miRNA的全面了解可能有助于推进针对增强阻塞血管侧支血流的靶向治疗。因此,本研究旨在通过基因表达分析CLTI患者中与动脉生成相关的血浆miRNA谱。样本取自一组CLTI患者的侧支动脉(CA组,n = 3)和对侧健康肢体(健康动脉;HA组,n = 3)。对从样本中提取的RNA进行浓度和纯度评估。使用归一化因子来解决样本间分析物丰度和/或质量的差异。随后,直接对单个RNA分子进行定量,并在CA组和HA组之间进行比较分析,以鉴定参与动脉生成的miRNA。上调幅度最大的五个与动脉生成相关的miRNA为miR-301b-3p、miR-221-5p、miR-639、miR-34a-5p和let-7a-5p,而下调幅度最大的五个miRNA包括miR-151a-5p、miR-371a-5p、miR-651-5p、miR-510-5p和miR-660-5p。总之,本研究记录了与对侧健康肢体相比,CLTI患者侧支动脉中与动脉生成相关的miRNA有明显的上调和下调。所涉及的可能机制,包括YAP/TAZ通路、TGFBR3 mRNA、SIRT1表达的调节以及其他过程,已显示受miRNA波动的调节。