E target plus the connection between nodes was represented by `edge’. Ultimately, the outcomes of PPI were imported into Cytoscape software (Version three.7.two) to make a visual display. As outlined by the Cytohubba plug-in MCC NF-κB Activator Source algorithm in the Cytoscape computer software, the major eight proteins with highest core degree had been analyzed and ultimately the possible core target could then be predicted.Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysesThe Database for Annotation, Visualization and Integrated Discovery (DAVID) database (https://david.ncifcrf.gov/) was utilised to analyze Gene Ontology (GO) function and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment of the popular target proteins. GO function evaluation is mostly used to describe the type of function an identified gene could possess, like cell function, molecular function (MF) and biological function. KEGG enrichment analysis is employed to acquire the possible signaling pathways enriched of EC against POI.Drugs and reagentsEC (CAS No: 490-46-0, Lot No: MUST-19043012) was bought from Chengdu Will have to Bio-Technology (Chengdu, China) and dissolved in DMSO at a stock concentration of 2 mg/ml. To avoid possible cytotoxicity, the final concentration of DMSO was applied at 0.1 . H2 O2 (three , W/V) was purchased from Shandong Lierkang Healthcare Technologies Co. Ltd (Shandong, China) and stored at 4 C within the dark. Fetal bovine serum (FBS), DMEM/F12 medium and penicillin/streptomycin had been purchased from Gibco (Grand Island, NY, U.S.A.). A cell counting kit eight (CCK-8) was purchased from Dojindo Laboratories (Tokyo, Japan). Superoxide dismutase (SOD), reduced glutathione (GSH) and oxidized glutathione (GSSG) assay kits2021 The Author(s). This is an open access post published by Portland Press Restricted on behalf with the PKC Activator review Biochemical Society and distributed beneath the Creative Commons Attribution License four.0 (CC BY).Bioscience Reports (2021) 41 BSR20203955 https://doi.org/10.1042/BSRTable 1 Primer designGene namePI3Ka AKT Nrf2 Hmox1 NQO1 NADPH ActinPrimer sequence(F) TTGCTGTTCGGTGCTTGGA (R) ACTTGCCTATTCAGGTGCTTCA (F) TGGCACCTTCATTGGCTACA (R) AGTCTGGATGGCGGTTGTC (F) ATTCCTTCAGCAGCATCCTCTC (R) ATCTGTGTTGACTGTGGCATCT (F) CCAGCAACAAAGTGCAAGATTC (R) TGAGTGTAAGGACCCATCGGAG (F) GAGCGAGTGTTCATAGGAGAGT (R) TCAGTTGAGGTTCTAAGACTTGGA (F) ACTACTATCTATGCTGAGACTGGTT (R) CCTGGTTGAATCACATTGAATCG (F) ACTTAGTTGCGTTACACCCTT (R) GTCACCTTCACCGTTCCALength (bp)277 220 86 105 217 137were bought from Nanjing Jiancheng Co. Ltd (Nanjing, China). Total RNA Extraction Kit (DNase I), mRNA cDNA Synthesis Kit and mRNA/lncRNA qPCR Kit/RNA Loading Buffer (5 were purchased from GenePool. eNOS, PI3 kinase p85 (PI3K), nuclear factor erythroid 2-related aspect two (Nrf2), heme oxygenase 1 (HO-1), actin antibody, goat anti-mouse IgG and goat anti-rabbit IgG had been all purchased from Abcam (Cambridge, MA, U.S.A.), and protein kinase B (AKT/PKB) antibody was bought from CST.Cell cultureThe ovarian granulosa cell line, KGN, was obtained commercially from Beijing Beina Chuanglian Biotechnology Institute (Beijing, China). The cells were cultured in DMEM/F12 medium supplemented with 10 FBS, one hundred U/ml penicillin and 100 mg/ml streptomycin and maintained in a humidified chamber at 37 C below five CO2 atmosphere.Cell viability assayKGN cells were seeded into 96-well culture plates at a density of four 104 cells/ml for 24 h after which exposed to various concentrations of H2 O2 and EC, respectively. Soon after 24 h of incubation, CCK-8 reag.