Anti-MMP2 monoclonal antibody, clone TC24b

Objective. To identify susceptibility modules and genes for cardiovascular disease in diabetic patients using weighted gene coexpression network analysis (WGCNA). Methods. The raw data of GSE13760 were downloaded from the Gene Expression Omnibus (GEO) website. Genes with a false discovery rate<0.05 and a log2 fold change >= 0.5 were included in the analysis. WGCNA was used to build a gene coexpression network, screen important modules, and filter the hub genes. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were performed for the genes in modules with clinical interest. Genes with a significance over 0.2 and a module membership over 0.8 were used as hub genes. Subsequently, we screened these hub genes in the published genome-wide SNP data of cardiovascular disease. The overlapped genes were defined as key genes. Results. Fourteen gene coexpression modules were constructed via WGCNA analysis. Module greenyellow was mostly significantly correlated with diabetes. The GO analysis showed that genes in the module greenyellow were mainly enriched in extracellular matrix organization, extracellular exosome, and calcium ion binding. The KEGG analysis showed that the genes in the module greenyellow were mainly enriched in antigen processing and presentation, phagosome. Fifteen genes were identified as hub genes. Finally, HLA-DRB1, LRP1, and MMP2 were identified as key genes. Conclusion. This was the first study that used the WGCNA method to construct a coexpression network to explore diabetes-associated susceptibility modules and genes for cardiovascular disease. Our study identified a module and several key genes that acted as essential components in the etiology of diabetes-associated cardiovascular disease, which may enhance our fundamental knowledge of the molecular mechanisms underlying this disease.

MTDH is overexpressed in many malignant tumors and is closely related to the occurrence and development of tumors. The purpose of this study is to explore the effects of the knockdown of the MTDH gene on the proliferation and metastasis of human bladder cancer in T24 cells. shRNA plasmids targeting MTDH were constructed and transfected into T24 cells. The effects of gene silencing were confirmed by qPCR (Quantitative real-time PCR) and Western blotting. An MTT assay was used to determine the effects of MTDH on the proliferation of the T24 cells. The cell apoptosis rate was determined using Hoechst 33342. We additionally determined the expressions of caspase-3, JAK (Janus Activated Kinase) 1, P-JAK1, STAT (Signal transducers and activators of transcription) 3, P-STAT3, and MTDH using Western blotting, and the secretions of the tumor invasion-related proteins (MMP2 and MMP9) were determined using ELISA. The results showed that MTDH RNAI was constructed and transfected into the T24 cells successfully. Compared to the control groups, the MTDH, P-JAK1, and P-STAT3 proteins were reduced significantly, but the level of caspase-3 was clearly increased in the MTDH RNAI groups. Cell apoptosis was significantly increased in the MTDH RNAI groups. The secretions of MMP2 and MMP9 were decreased, and the cells' ability to proliferate and invade decreased significantly after MTDH RNAI was transfected into the T24 cells. In conclusion, we constructed an shRNA plasmid targeting MTDH, and it was successfully transfected into T24 cells. The knockdown of MTDH expression may inhibit proliferation and invasion via the JAK1/STAT3 pathway in T24 cells. Therefore, MTDH may be a new target for the genetic treatment of human bladder cancer.