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Knockdown of ADAMDEC1 ameliorates ox-LDL-induced endothelial cell injury and atherosclerosis progression

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Abstract

This study was designed to investigate the role of a disintegrin and metalloproteinase domain-like protein decysin 1 (ADAMDEC-1) in atherosclerosis (AS). The Gene Expression Omnibus (GEO) database was utilized to identify differentially expressed genes (DEGs) between carotid atheroma plaque and carotid tissue adjacent atheroma plaque obtained from AS patients. Gene functional enrichment analysis was conducted on DEGs using Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG). QRT-PCR was employed to quantify mRNAs expression. AS animal model was established using ApoE-/- mice; serum triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) levels were detected. Aortic sinus atherosclerotic lesions were observed using H&E staining and Oil Red O staining. ADAMDEC-1 was silenced using small interfering RNAs (siRNAs) in human vascular smooth muscle cells (HVSMCs). Cell proliferation, migration, and cell cycle progression were detected by cell count kit-8 (CCK8), 5-ethynyl-2′-deoxyuridine (EDU), wound scratch healing assay, transwell assay, and flow cytometry, respectively. Western blot was used to evaluate various protein expression levels. Our results showed that ADAMDEC-1 was highly expressed in the serum of AS patients, consistent with the in silico results. The elevated TG, LDL-C, and HDL-C levels along with H&E and Oil Red O staining confirmed the successful establishment of the AS mouse model. ADAMDEC-1 expression was also elevated in AS mice. ADAMDEC-1 knockdown in HVSMCs suppressed cell proliferation, inhibited the expression of proliferating cell nuclear antigen (PCNA), and reduced the levels of matrix metalloproteinases (MMP2 and MMP9) proteins. Protein-protein interaction (PPI) analysis indicated that ADAMDEC-1 was associated with CXCL9, CCR5, TNF-α, TNFR1, and NF-κB-p50. The expression levels of CXCL9, CCR5, TNF-α, TNFR1, and NF-κB-p50 increased, while ADAMDEC-1 knockdown attenuated the expression of these proteins. Our study findings substantiate that ADAMDEC-1 may represent a novel target for AS.

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The dataset used and/or analyzed in this study is available from the corresponding author on reasonable request.

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Funding

This study was supported by the General Project of the Health Commission of Anhui Province (AHWJ2022b020).

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XW writed original draft. XW, FG, CC, and YZ prepared Figures 1, 2, 3, 4, 5, 6, and 7. FG prepared supplementary figure 1. All authors reviewed the manuscript.

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Correspondence to **aochen Wang.

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Ethics approval and consent to participate

An ethical approval was obtained from the Ethics Committee of the Second Affiliated Hospital of Anhui Medical University for this study (YX2021-039). Informed consent was obtained from the patients involved. All animal experiments were conducted according to the Guide for the Care and Use of Laboratory Animals (National Research Council, 1996). All animal experiments in the present study were approved by the Ethic Committee of the Second Affiliated Hospital of Anhui Medical College.

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The authors declare no competing interests.

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Wang, X., Gao, F., Cheng, C. et al. Knockdown of ADAMDEC1 ameliorates ox-LDL-induced endothelial cell injury and atherosclerosis progression. Funct Integr Genomics 24, 1 (2024). https://doi.org/10.1007/s10142-023-01278-8

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  • DOI: https://doi.org/10.1007/s10142-023-01278-8

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