Objective:To investigate the inhibitory effect of tripartite motif-containing 25 (TRIM25) on the replication of Japanese encephalitis virus (JEV) in cells and its molecular mechanism.Methods:Human glioma cells (U251 cells) and Kunming mice were infected with JEV, and then the cells and brain tissue samples were collected. The transcription levels of six TRIM genes were detected by real-time PCR, and the expression of TRIM25 in cells was detected by Western blot. U251 and A549 cells overexpressed with TRIM25 and U251 cells knocked out with TRIM25 gene were constructed. Cells were infected with JEV, and the replication of JEV was detected by viral plaque assay, real-time PCR and Western blot. The interaction of TRIM25 with viral proteins was investigated by co-immunoprecipitation (Co-IP) and indirect immunofluorescence assay. The expression of IFN-β in overexpressed TRIM25 cells was detected by real-time PCR and ELISA.Results:JEV infection promoted the expression of TRIM25 in cells and mouse brain tissues. TRIM25 overexpression restricted JEV replication in U251 and A549 cells, while TRIM25 knockout enhanced JEV replication. TRIM25 overexpression upregulated the level of IFN-β in cells. TRIM25 interacted with JEV capsid protein and promoted the degradation of capsid protein.Conclusion:TRIM25 can inhibit the replication of JEV in cells by upregulating IFN-β and promoting the degradation of JEV C protein.

Objective:To investigate the inhibitory effect of tripartite motif-containing 25 (TRIM25) on the replication of Japanese encephalitis virus (JEV) in cells and its molecular mechanism.Methods:Human glioma cells (U251 cells) and Kunming mice were infected with JEV, and then the cells and brain tissue samples were collected. The transcription levels of six TRIM genes were detected by real-time PCR, and the expression of TRIM25 in cells was detected by Western blot. U251 and A549 cells overexpressed with TRIM25 and U251 cells knocked out with TRIM25 gene were constructed. Cells were infected with JEV, and the replication of JEV was detected by viral plaque assay, real-time PCR and Western blot. The interaction of TRIM25 with viral proteins was investigated by co-immunoprecipitation (Co-IP) and indirect immunofluorescence assay. The expression of IFN-β in overexpressed TRIM25 cells was detected by real-time PCR and ELISA.Results:JEV infection promoted the expression of TRIM25 in cells and mouse brain tissues. TRIM25 overexpression restricted JEV replication in U251 and A549 cells, while TRIM25 knockout enhanced JEV replication. TRIM25 overexpression upregulated the level of IFN-β in cells. TRIM25 interacted with JEV capsid protein and promoted the degradation of capsid protein.Conclusion:TRIM25 can inhibit the replication of JEV in cells by upregulating IFN-β and promoting the degradation of JEV C protein.

Objective To explore the effect of nuclear respiratory factor 1(NRF1)activation of ATP binding cas-sette transporter C1(ABCC1)transcription on cisplatin resistance in lung adenocarcinoma cells and its potential mechanisms.Methods The expression levels of ABCC1 in lung adenocarcinoma tumor tissues were analyzed by on-cogenomic datasets.Cells were grouped into:sh-NC,sh-ABCC1,sh-NC+oe-NC,sh-NRF1+oe-NC and sh-NRF1+oe-ABCC1.Real-time polymerase chain reaction(RT-qPCR)was used to detect the expression of ABCC1 in lung adenocarcinoma cells.Cisplatin-resistant lung adenocarcinoma cell strains were constructed to detect the expression level of ABCC1.Cell proliferation,migration and invasion were assessed by colony formation and Transwell assay.The IC50 values of drug-resistant lung adenocarcinoma cells treated with different doses(0,0.001,0.002,0.004,0.008,0.016 and 0.032 mg/mL)of cisplatin were detected by CCK-8 assay.Western blot was used to detect the protein expression of epithelial-mesenchymal transition markers(E-cadherin,N-cadherin).Dual luciferase and ChIP assays were performed to verify the binding relationship between NRF1 and ABCC1.Results ABCC1 was highly expressed in lung adenocarcinoma tumor tissues and cells.Compared with cisplatin-sensitive lung adenocarci-noma cells,ABCC1 was highly expressed in cisplatin-resistant lung adenocarcinoma cells,and knockdown of ABCC1 significantly inhibited cell proliferation,migration and invasion,and increased the expression of E-cadherin(P<0.05)and decreased the expression of N-cadherin(P<0.05).Knockdown of ABCC1 significantly increased the sensitivity of lung adenocarcinoma cells to cisplatin(P<0.05).In addition,dual luciferase and ChIP experi-ments confirmed the binding relationship between NRF1 and ABCC1 promoter de-binding,and NRF1 could activate the transcription of ABCC1.Knockdown of NRF1 attenuated the inhibitory effect of over-expressed ABCC1 on the proliferation,migration,invasion and cisplatin-resistance of lung adenocarcinoma cells(P<0.05).Conclusions This study revealed the effect of the NRF1/ABCC1 axis enhancement is a potential strategy to overcome the barrier of cisplatin-resistance in chemotherapy of lung adenocarcinoma.

Objective Evaluate the performance of the encephalon state index(ESI)in depth of anesthesia monitoring during clinical surgery,compared with the bispectral index(BIS).Methods ESI and BIS data were collected from 60 patients in a single-center clinical trial to compare their efficacy in measuring the depth of anesthesia.Results Consistency analysis revealed mean differences and standard deviations of-0.18±5.42 and-0.11±6.51 between ESI and BIS for awake and anesthetized states,respectively.Correlation analysis showed a correlation coefficient of 0.92 throughout the operative period.Prediction probability analysis indicated that both ESI and BIS had prediction probabilities of 0.97,effectively predicting anesthesia status.Conclusion ESI and BIS show good equivalence in monitoring depth of anesthesia during clinical surgery,which meet the requirements of clinical anesthesia.

Objective To investigate the impact and mechanism of Liraglutide on autophagy and apoptosis of human podocyte induced by high glucose.Methods Human podocytes were cultured in vitro,and grouped into normal control group(NC group),high glucose group(HG group),25 nmol/L Liraglutide group(HG+Lir 25 group),50 nmol/L Liraglutide group(HG+Lir 50 group),Liraglutide+LY294002 group(HG+Lir+LY294002 group),and Liraglutide+3-MA group(HG+Lir+3-MA group).The podocyte activity was detected by CCK-8.The apoptosis rate and morphology of podocytes were detected by flow cytometry and Hoechst 33342 staining.The expression of autophagic body and autophagic marker LC3 protein in podocyteswas observed by transmission electron microscopy and immunofluorescence staining.Western blot was applied to detect the expression of apoptosis,autophagy and phosphoinositol 3-kinase(PI3K)/protein kinase B(Akt)/mammalian target of rapamycin(mTOR)pathway related proteins in podocytes.Results Compared with NC group,the activity of podocytes and the expression of Bcl-2,Bcl-2/Bax,LC3 Ⅱ/LC3 Ⅰ,p-PI3K/PI3K,p-Akt/Akt proteins in HG group were decreased(P＜0.05),while the apoptosis rate and the expression of Bax,p62,p-mTOR/mTOR proteins were increased in HG group(P＜0.05).There were many podocytes with pyknotic nuclei,the number of autophagic bodies and the number of green fluorescent spots of LC3 protein were decreased in HG group.Compared with HG group,the activity of podocyte increased,and the expression of Bcl-2,Bcl-2/Bax,LC3 Ⅱ/LC3 Ⅰ,p-PI3K/PI3K,p-Akt/Akt protein increased(P＜0.05),while the apoptosis rate and the expression of Bax,p62,p-mTOR/mTOR protein decreased(P＜0.05)in HG+Lir 25 group and HG+Lir 50 group.The number of podocytes with karyopyknosis was reduced,the number of autophagosomes and the number of green fluorescent spots of LC3 protein were increased in HG+Lir 25 group and HG+Lir 50 group,and the above changes indexes were more obvious in the HG+Lir 50 group group.Compared with HG+Lir 50 group,PI3K/Akt/mTOR pathway could be regulated,and reduce the improvement of Liraglutide on podocyte viability,apoptosis and autophagy induced by high glucose in HG+Lir+LY294002 group and HG+Lir+3-MA group.Conclusion Liraglutide may promote the autophagy of human podocyte induced by high glucose and inhibit its apoptosis through PI3K/Akt/mTOR pathway.

Objective:To investigate the causal relationship between trimethylamine N-oxide (TMAO) and its precursors (betaine, carnitine, and choline) and pancreatic diseases based on the Mendelian randomization (MR) method.Methods:Genome-wide association study data of TMAO, betaine, carnitine, choline, acute pancreatitis (AP), chronic pancreatitis (CP), pancreatic cancer (PC), and circulating immune cell characteristics (white blood cell, lymphocyte, monocyte, neutrophil, eosinophil and basophil) were collected. According to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE)-MR reporting guidelines, the available genetic variants [single nucleotide polymorphism (SNP)] were strictly screened. The causal relationship between exposure (TMAO and its precursors) and outcomes (pancreatic diseases and circulating immune cell characteristics) was evaluated using inverse variance weighting (IVW), MR-Egger regression and weighted median. The reliability of the results was evaluated by sensitivity analysis based on MR-Egger regression, MR-PRESSO, Cochrane's Q test and leave-one-out method. Results:A total of 36 SNP associated with TMAO and its precursors were included. Five of these were associated with TMAO, 13 with betaine, 12 with carnitine, and 6 with choline. ① MR analysis showed that TMAO may increase the risk of AP [odds ratio ( OR) = 1.100, 95% confidence interval (95% CI) was 1.008-1.200, P = 0.032], and choline may reduce the risk of alcoholic acute pancreatitis (AAP; OR = 0.743, 95% CI was 0.585-0.944, P = 0.015). The analysis results of MR-Egger regression and weighted median were consistent with the IVW results. There is no evidence to support a causal relationship between TMAO and its precursors and the risk of CP and PC. Sensitivity analysis indicated that SNP analyzed by MR showed no heterogeneity and low pleiotropy. The leave-one-out method analysis determined that after excluding any SNP, the effect intervals of the remaining SNP on the results were similar to the overall effect intervals, which suggested the robustness of MR results. ② There was a positive causal relationship between plasma TMAO level and circulating monocyte count ( OR = 1.017, 95% CI was 1.000*-1.034, P = 0.048, * represented that the data was obtained by correcting to 3 decimal places from 1.000 1). The causal effect obtained by MR-Egger regression and weighted median analysis was consistent with the results of IVW. Sensitivity analysis illustrated SNP analyzed by MR showed no heterogeneity and pleiotropy. The leave-one-out method analysis determined that after excluding any SNP, the effect intervals of the remaining SNP on the results were similar to the overall effect intervals, which suggested the robustness of MR results. Conclusion:TMAO and choline may change the risk of AP, and TMAO may contribute to the increase of circulating monocyte count in AP.

This study was designed to investigate the effect of emodin(EMO)on endoplasmic reticulum stress(ERS)in alveolar macrophages(AMs)of rats with severe acute pancreatitis(SAP)and the underlying mechanism.Forty rats were recruited and randomized into four groups:sham-operation(SO)group,SAP group,4-phenylbutyric acid(4-PBA)group and EMO group.The SAP model was established by retrograde injection of 5%sodium taurocholate into the biliopancreatic duct.HE staining was performed to observe the pathological changes in the pancreas and lung;the wet/dry weight ratio of lung tissue was calculated.Arterial partial pressure of the oxygen(PaO2)and carbon dioxide(PaCO2)were measured;the serum amylase activity and the levels of inflammatory factors TNF-α and IL-6 were evaluated.TUNEL staining was used to determine the cell apoptosis rate of lung tissue;Western blot was used to detect the protein expression levels of GRP78,ATF6,CHOP,and Caspase-12.Moreover,rat AMs(NR8383)were signed into control(CON)group,lipopolysaccharide(LPS)group,4-phenylbutyric acid(4-PBA)group and EMO group in vitro.Glutathione(GSH)and malondialdehyde(MDA)levels in the cell medium were measured,as were the protein expression levels of GRP78,ATF6,CHOP,and Caspase-12 in AMs.For experiments in vivo,compared with the SO group,the pathological score of pancreatic and lung in SAP rats was increased(P<0.05),the levels of serum amylase activity,IL-6 and TNF-α were increased(P<0.05),the wet/dry weight ratio and apoptosis rate of lung tissue were increased(P<0.05),PaO2 was decreased,PaCO2 was increased(P<0.05),and the protein expression of GRP78,ATF6,CHOP and Caspase-12 were increased in lung tissue(P<0.05).Compared with the SAP group,these indexes mentioned above in the 4-PBA and EMO groups were reversed(P<0.05).For experiments in vitro,compared with the CON group,GSH levels were decreased,and MDA levels were increased in the cell medium of LPS group(P<0.05),and the expression of GRP78,ATF6,CHOP and Caspase-12 proteins were upregulated(P<0.05).Compared with the LPS group,these indexes mentioned above in in cell medium of the 4-PBA and EMO groups were reversed(P<0.05).In conclusion,the protective effect of EMO on pancreatic and lung injury in SAP rats may be closely related to the inhibition of ATF6/CHOP pathway-induced inflammation and oxidative stress in AMs.

N ⁶-methyladenosine (m⁶A) modification is critical for mRNA splicing, nuclear export, stability and translation. Fat mass and obesity-associated protein (FTO), the first identified m⁶A demethylase, is critical for cancer progression. Herein, we developed small-molecule inhibitors of FTO by virtual screening, structural optimization, and bioassay. As a result, two FTO inhibitors namely 18077 and 18097 were identified, which can selectively inhibit demethylase activity of FTO. Specifically, 18097 bound to the active site of FTO and then inhibited cell cycle process and migration of cancer cells. In addition, 18097 reprogrammed the epi-transcriptome of breast cancer cells, particularly for genes related to P53 pathway. 18097 increased the abundance of m⁶A modification of suppressor of cytokine signaling 1 (SOCS1) mRNA, which recruited IGF2BP1 to increase mRNA stability of SOCS1 and subsequently activated the P53 signaling pathway. Further, 18097 suppressed cellular lipogenesis via downregulation of peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer-binding protein alpha (C/EBPα), and C/EBPβ. Animal studies confirmed that 18097 can significantly suppress in vivo growth and lung colonization of breast cancer cells. Collectively, we identified that FTO can work as a potential drug target and the small-molecule inhibitor 18097 can serve as a potential agent against breast cancer.

CCAAT enhancer binding protein β (C/EBPβ), as a nuclear transcription factor necessary for the development of liver, airway epithelium, and adipose tissue, plays a vital role in physiological processes related to cell proliferation, apoptosis, and differentiation. However, the up-regulation of C/EBPβ activates signal pathways related to inflammatory response, epithelial-mesenchymal transition, cell proliferation and invasion, immune response, and angiogenesis by regulating a series of downstream genes transcription promotes the development of lung diseases. Therefore, targeting C/EBPβ may be a potential treatment strategy for lung diseases. This paper summarizes the regulatory effects of C/EBPβ and related signaling pathways in lung infection, asthma, chronic obstructive pulmonary disease, lung injury, pulmonary fibrosis, and lung cancer to provide a theoretical basis for the precision medicine of lung diseases.

Ulcerative colitis(UC)is a chronic inflammatory bowel disease caused by many factors including colonic inflammation and microbiota dysbiosis.Previous studies have indicated that celastrol(CSR)has strong anti-inflammatory and immune-inhibitory effects.Here,we investigated the effects of CSR on colonic inflammation and mucosal immunity in an experimental colitis model,and addressed the mechanism by which CSR exerts the protective effects.We characterized the ther-apeutic effects and the potential mechanism of CSR on treating UC using histological staining,intestinal permeability assay,cytokine assay,flow cytometry,fecal microbiota transplantation(FMT),16S rRNA sequencing,untargeted metabolomics,and cell differentiation.CSR administra-tion significantly ameliorated the dextran sodium sulfate(DSS)-induced colitis in mice,which was evidenced by the recovered body weight and colon length as well as the decreased disease activity index(DAI)score and intestinal permeability.Meanwhile,CSR down-regulated the production of pro-inflammatory cytokines and up-regulated the amount of anti-inflammatory mediators at both mRNA and protein levels,and improved the balances of Treg/Thl and Treg/Th1 7 to maintain the colonic immune homeostasis.Notably,all the therapeutic effects were exerted in a gut microbiota-dependent manner.Furthermore,CSR treatment increased the gut microbiota diversity and changed the compositions of the gut microbiota and metabolites,which is probably associated with the gut microbiota-mediated protective effects.In conclusion,this study provides the strong evidence that CSR may be a promising therapeutic drug for UC.