Project description:To identify the sncRNAs related to HBV-ACLF, we performed small RNA-seq in plasma exosomes collected from 3 normal subjects, 4 chronic hepatitis B (CHB) patients with flare and 6 HBV-ACLF patients in the discovery cohort.
Project description:Genome wide mRNA profiling in peripheral blood mononuclear cells (PBMCs) from hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF) patients of in different prognoses of 28-day. The Agilent SurePrint G3 Human Gene Expression ver. 3 8x60K Microarray was used to obtain RNA profiles in 8 survival patients and 8 dead patients in 28-day.
Project description:Hepatitis B virus (HBV)-associated acute on chronic liver failure (HBV-ACLF), characterized by an acute deterioration of liver function in the patients with chronic hepatitis B (CHB), is lack of predicting biomarkers for prognosis. To explore potential biomarkers of HBV-ACLF for clinical applications, immuno-depletion of high-abundance plasma proteins followed by iTRAQ-based quantitative proteomic approach was employed to analyze plasma samples from 20 healthy control people, 20 CHB patients and 20 HBV-ACLF patients, respectively. As a result, a total of 427 proteins were identified and quantified from these samples, and 42 proteins were differentially expressed in HBV-ACLF patients as compared to both CHB patients and healthy controls. According to bioinformatics analysis results, 6 proteins related to immune response (MMR), inflammatory response (OPN, HPX), blood coagulation (ATIII) and lipid metabolism (APO-CII, GP73) were selected as biomarker candidates. Further ELISA analysis confirmed the significant up-regulation of GP73, MMR, OPN and down-regulation of ATIII, HPX, APO-CII in HBV-ACLF plasma samples (p<0.01). Moreover, receiver operating characteristic (ROC) curve analysis revealed high diagnostic value of these candidates in assessing HBV-ACLF. In conclusion, present quantitative proteomic study identified 6 novel HBV-ACLF biomarker candidates and might provide fundamental information for development of HBV-ACLF biomarker.
Project description:Genome wide microRNA profiling in peripheral blood mononuclear cells (PBMCs) from hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF) patients of in different prognoses of 28-day. The Agilent Human miRNA Microarray Kit was used to obtain RNA profiles in 8 survival patients and 8 dead patients in 28-day.
Project description:B- and T-lymphocyte attenuator (BTLA) levels are increased in patients with hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF). This condition is characterized by susceptibility to infection and T-cell immune exhaustion. However, whether BTLA can induce T-cell immune exhaustion and increase the risk of infection remains unclear. Here, we report that BTLA levels are significantly increased in the circulating and intrahepatic CD4+ T cells from patients with HBV-ACLF, and are positively correlated with disease severity, prognosis, and infection complications. BTLA levels are upregulated by the IL-6 and TNF signaling pathways, and are abolished or partially weakened by IL-6 and TNF inhibitors. Antibody crosslinking of BTLA activated the PI3K-Akt pathway to inhibit the activation, proliferation, and cytokine production of CD4+ T cells while promoting their apoptosis. In contrast, BTLA knockdown promoted their activation and proliferation. BTLA-/- ACLF mice exhibited increased cytokine secretion, and reduced mortality and bacterial burden. The administration of a neutralizing anti-BTLA antibody reduced Klebsiella pneumoniae load and mortality in ACLF mice. These data help elucidate HBV-ACLF pathogenesis and aid in identifying novel drug targets.
Project description:Human livers biopsies from HBV+ patients and healthy donors were collected . RNA and Protein were extract and The Human Adipogenesis RTM-BM-2 ProfilerM-bM-^DM-" PCR ArrayM-BM- was used to compare the gene expression in the two group. At the same time PBMCs were collected and the same array were used to compare the adipogenesis expression in the two system. qPCR gene expression profiling. PBMCs from 20 HBV+ and 20 HD patients were used . Equal amount total RNA from each samples were used
Project description:The low frequency of HBV-specific CD8+ T cells in the peripheral blood of CHB patients has limited studies of the mechanisms underlying HBV-induced T cell exhaustion. Similar to the expansion defect displayed in HBV-specific CD8+ T cells, TCR-induced proliferation of global CD8+ T cells is impaired in a fraction of chronic HBV (CHB) patients. Thus, examining the molecular regulation of global CD8+ T cell function in CHB patients may provide insight into the exhaustion of HBV-specific CD8+ T cells. We used microarrays to detail the global programme of gene expression of CD8 T cells from CHB patients who have not received anti-viral treatment. Fifteen milliliters of blood was drawn from eachof three CHB patients and three healthy donors. PBMCs were enriched using Ficoll, and CD8+ T cells were purified using positive selection beads to a purity of >95% (Miltenyi Biotec, Auburn, CA). Total RNA was extracted using a mirVana isolation kit (Life Technologies, Carlsbad, CA).
Project description:Human livers biopsies from HBV+ patients and healthy donors were collected . RNA and Protein were extract and The Human Adipogenesis RTM-BM-2 ProfilerM-bM-^DM-" PCR ArrayM-BM- was used to compare the gene expression in the two group. At the same time PBMCs were collected and the same array were used to compare the adipogenesis expression in the two system. qPCR gene expression profiling. Fresh Livers from 20 HBV+ and 20 HD patients were used . Equal amount total RNA from each samples were used.
