Journal: Aging (Albany NY)
Article Title: Inhibition of circulating exosomal microRNA-15a-3p accelerates diabetic wound repair
doi: 10.18632/aging.103143
Figure Lengend Snippet: Dia-Exos were enriched with miR-15a-3p, which altered HUVEC function. ( A , B ) An miRNA microarray dataset of non-diabetic foot wound patients and DFU patients retrieved from NCBI GEO (accession number: GSE80178) indicated that miR-15a-3p was upregulated in foot skin from diabetic patients. ( C , D ) MiR-15a-3p overexpression was found in serum and exosomes from the diabetic group; n = 10 per group. ( E ) Effects of the two kinds of exosomes on miR-15a-3p levels in the skin tissues of mice treated with Dia-Exos. ( F ) qRT-PCR indicated that antagomiR-15a-3p could partially counteract the overexpression of miR-15a-3p in HUVECs. ( G ) A CCK-8 assay was used to assess the effects of antagomiR-15a-3p on HUVEC proliferation. ( H , I ) Flow cytometry was used to quantify the cell cycle distribution. ( J ) qRT-PCR analysis indicated that antagomiR-15a-3p could restore the mRNA levels of Cyclin D1 and Cyclin D3 . ( K ) The effects of antagomiR-15a-3p on the apoptosis-related genes Bcl-2 and Bax were measured using qRT-PCR. ( L , M ) A Transwell migration assay was used to measure the effects of miR-15a-3p on HUVEC migration; scale bar: 100 μm. ( N – P ) A tube formation assay was used to assess the effects of miR-15a-3p on HUVEC angiogenesis; scale bar: 200 μm. ( Q , R ) The scratch assay results of the three groups; scale bar: 250 μm. Data are the means ± SDs of three independent experiments. *p < 0.05, **p < 0.01, ***p < 0.001.
Article Snippet: We retrieved an miRNA microarray dataset of foot skin samples from non-diabetic foot wound patients and DFU patients from the Gene Expression Omnibus (GEO) of the National Center for Biotechnology Information (NCBI; accession number: GSE80178), which also indicated that miR-15a-3p was upregulated in diabetic patients ( and ).
Techniques: Microarray, Over Expression, Quantitative RT-PCR, CCK-8 Assay, Flow Cytometry, Transwell Migration Assay, Migration, Tube Formation Assay, Wound Healing Assay