Abstract:
:Hepatitis B virus (HBV)-specific cytotoxic T lymphocytes (CTLs) play a vital role in viral control and clearance. Recent studies have elucidated that Tapasin, an endoplasmic reticulum chaperone, is a well-known molecule that appears to be essential in peptide-loading process. The Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway plays an important role in immune response regulation and cytokines secretion. We have previously verified that fusion protein CTP-HBcAg18-27-Tapasin could facilitate the maturation of bone marrow derived dendritic cells and enhance specific CTLs responses in vitro, which might be associated with the activation of JAK/STAT signaling pathway. To further explore whether JAK/STAT signaling pathway participated in specific immune responses mediated by CTP-HBcAg18-27-Tapasin, we suppressed the JAK/STAT pathway with pharmacological inhibitor (AG490) in vivo. Our studies showed that the number of IFN-γ+-CD8+ T cells was decreased significantly compared with other groups after being blocked by AG490. The percentage of IFN-γ+-CD4+ T cells and IL-2-CD4+ T cells was also decreased. Moreover, lower expression levels of Jak2, Tyk2, STAT1, and STAT4 were detected in AG490 group. In addition, the secretion levels of Th1-like cytokines were decreased and a weaker specific T-cell response was observed in AG490 group. Furthermore, the levels of HBV DNA and HBsAg in serum and expression levels of HBsAg and HBcAg in liver tissues were elevated after this pathway was inhibited in HBV transgenic mice. These results demonstrate that the JAK/STAT signaling pathway participates in Th1-oriented immune response induced by CTP-HBcAg18-27-Tapasin and this might provide a theoretical basis for HBV immunotherapy.
journal_name
Acta Biochim Biophys Sin (Shanghai)journal_title
Acta biochimica et biophysica Sinicaauthors
Wu S,Chen X,Tang Y,Zhang Y,Li D,Chen J,Wang J,Tang Z,Zang G,Yu Ydoi
10.1093/abbs/gmx133subject
Has Abstractpub_date
2018-02-01 00:00:00pages
181-190issue
2eissn
1672-9145issn
1745-7270pii
4797592journal_volume
50pub_type
杂志文章abstract::Thyroid cancer is one of the common malignancies of the endocrine system and the number of thyroid cancer cases is increasing constantly. Significant work has focused on the molecular mechanisms of thyroid cancer, but many mechanisms remain undiscovered. In this study, we employed a comprehensive analysis of whole-tra...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmz144
更新日期:2020-02-03 00:00:00
abstract::Ras homolog gene family member A (RhoA) has been identified as a critical regulator of tumor aggressive behavior. In this study, we assessed the role of RhoA in the mechanisms underlying growth, migration, and invasion of squamous cell carcinoma of tongue (TSCC). Stable RhoA knockdown of TSCC cell lines SCC-4 and CAL2...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmu051
更新日期:2014-08-01 00:00:00
abstract::G-quadruplexes are higher-order nucleic acid structures formed in G-rich sequences in DNA or RNA. G-quadruplexes are distributed in many locations in the human genome, including promoter regions, and are viewed as promising therapeutic targets. Uncoupling protein-1 (UCP1) is a mitochondrial thermogenic gene critical f...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmy059
更新日期:2018-07-01 00:00:00
abstract::In the present study, we investigated the inhibition of the Lux quorum-sensing system by N-acyl cyclopentylamine (Cn-CPA). The Lux quorum-sensing system regulates luminescence gene expression in Vibrio fischeri. We have already reported on the synthesis of Cn-CPA and their abilities as inhibitors of the quorum-sensing...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1111/j.1745-7270.2008.00490.x
更新日期:2008-12-01 00:00:00
abstract::Hyperglycemia, a diagnostic characteristic of diabetes mellitus, is detrimental to pancreatic β cells. Delphinidin, a member of the anthocyanin family, inhibits glucose absorption, increases glucagon-like peptide-1 (GLP-1) secretion, and improves insulin secretion in diabetes. However, whether delphinidin plays a prot...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmz126
更新日期:2019-12-13 00:00:00
abstract::Cortactin, an actin-binding protein and a substrate of Src, is encoded by the EMS1 oncogene. Cortactin is known to activate Arp2/3 complex-mediated actin polymerization and interact with dynamin, a large GTPase and proline rich domain-containing protein. Transferrin endocytosis was significantly reduced in cells by kn...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1111/j.1745-7270.2006.00141.x
更新日期:2006-02-01 00:00:00
abstract::Renal ischemia/reperfusion (I/R) is a common cause of acute renal failure in many clinical settings. Our study aimed to elucidate the role of lentiviral vector-mediated KSR1 gene silencing in inflammatory factor expression and proliferation of renal tubular epithelial cells (RTECs) in a rat model of I/R injury. Male S...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmy071
更新日期:2018-08-01 00:00:00
abstract::The unique temporal expression pattern of miR-200c in epididymis during post-natal development in juvenile rats was revealed by our home-made miRNA microarray in this paper. It was found that miR-200c expressed in the lowest level at Day 7 and then increased to the highest at Day 36 followed by a dramatic decrease. Th...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmq073
更新日期:2010-09-01 00:00:00
abstract::Acyl-coenzymeA:cholesterol acyltransferase 2 (ACAT2) is abundantly expressed in intestine and fetal liver of healthy human. Our previous studies have shown that in monocytic cells the low-level expression of human ACAT2 gene with specific CpG-hypomethylated promoter is regulated by the CCAAT/enhancer binding protein (...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmw095
更新日期:2016-11-01 00:00:00
abstract::Hyperglycemia-mediated reactive oxygen species (ROS) accumulation plays an important role in hyperglycemia-induced endothelial injury. Kelch-like ECH-associated protein 1 (Keap1)/nuclear factor erythroid 2-related factor 2 (Nrf2)/antioxidant response element (ARE) pathway inhibition participates in hyperglycemia-induc...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmaa023
更新日期:2020-05-26 00:00:00
abstract::In the present study, paclitaxel (PTX) were encapsulated with polyethylene glycol (PEG)-polylactide (PLA)/D-α tocopheryl polyethylene glycol 1000 succinate (TPGS) (PEG-PLA/TPGS) and the enhanced anti-tumor activity of this PTX mixed micelles (PTX-MM) was evaluated in lung cancer cells. The PTX-MM prepared by a solvent...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmv110
更新日期:2015-12-01 00:00:00
abstract::In order to obtain the recombinant human PACAP efficiently by intein-mediated single column purification, a gene encoding human PACAP was synthesized and cloned into Escherichia coli expression vector pKYB. The recombinant vector pKY-PAC was transferred into E. coli ER2566 cells and the target protein was over-express...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/36.11.759
更新日期:2004-11-01 00:00:00
abstract::Gliomas are the most common brain tumors of the central nervous system. In this study, we investigated the molecular mechanisms and biological function of SIRT6 in human gliomas. The expression levels of SIRT6 in glioma tissues and cells were analyzed by qRT-PCR and western blot analysis. CCK8 and clonogenicity assays...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmy019
更新日期:2018-04-01 00:00:00
abstract::The effect of the guanosine triphosphatase activating proteins (GAPs) on spermatogenesis has been studied for years, though no GAPs have been explored in epididymis, an essential organ for sperm maturation. In this study, a new GAP member, designated as MacGAP, was cloned in human epididymis. The MacGAP gene encodes a...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:
更新日期:2008-10-01 00:00:00
abstract::Receptor of human interleukin 4 (hIL4R) has been found to be present on many types of cancer, so it may be a good target for cancer therapy. Here, fusion toxin gene DT4H has been constructed by fusing DNA sequence encoding the first 389 amino acids of diphtherial toxin (DT), which can not bind its own receptor, to hum...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/36.6.437
更新日期:2004-06-01 00:00:00
abstract::Several discriminate functions for predicting core promoters that based on the potential cooperation between transcription factor binding sites (TFBSs) are discussed. It is demonstrated that the promoter predicting accuracy is improved when the cooperation among TFBSs is taken into consideration. The core promoter reg...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/36.4.250
更新日期:2004-04-01 00:00:00
abstract::Some barley mutants can synthesize neither anthocyanins nor proanthocyanidins in the seed coat, which is related to several genes in locus Ant13, but the exact model of action remains unknown. We used the cDNA microarray technology with barley transcription-deficient mutant (ant13-152) that does not synthesize proanth...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/36.10.695
更新日期:2004-10-01 00:00:00
abstract::Both inhibitor of growth 4 (ING4) and phosphatase and tensin homolog deleted on chromosome 10 (PTEN) are well known as tumor suppressors that are closely related to tumor occurrence and progression. It was reported that ING4 and PTEN showed synergistic antitumor activities in nasopharyngeal carcinoma cells. The two tu...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmw062
更新日期:2016-08-01 00:00:00
abstract::In cell mitosis, cytokinesis is a major deformation process, during which the site of the contractile ring is determined by the biochemical stimulus from asters of the mitotic apparatus, actin and myosin assembly is related to the motion of membrane phospholipids, and local distribution and arrangement of the microfil...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1111/j.1745-7270.2005.00090.x
更新日期:2005-09-01 00:00:00
abstract::Caveolin-1 is regulated by estrogen in vascular smooth muscle cells. Raloxifene, a selective estrogen receptor modulator that possibly has cardioprotective properties without an increased risk of cancer or other side effects of estrogen, may be used in women with risk of coronary artery disease. However, the relations...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1111/j.1745-7270.2006.00222.x
更新日期:2006-11-01 00:00:00
abstract::The human immunodeficiency virus-1 (HIV-1) envelope glycoprotein 120 (gp120) binds to cell surface receptors and mediates HIV entry. Previous studies suggest the cell surface protein disulfide isomerase (PDI) might interact with disulfide bond(s) of gp120 and thus facilitate HIV-1 entry. In the present study, a kineti...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmq024
更新日期:2010-05-15 00:00:00
abstract::Nocardia, Rhodococcus and Streptomyces, all members of the actinomycetes family, are Gram-positive eubacteria with high G+C content and able to form mycelium. We report here a newly identified plasmid pXT107 of Nocardia sp. 107, one of the smallest circular plasmids found in Nocardia. The complete nucleotide sequence ...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1111/j.1745-7270.2006.00207.x
更新日期:2006-09-01 00:00:00
abstract::Several essential biological progresses in mammals are regulated by circadian rhythms. Though the molecular mechanisms of oscillating these circadian rhythms have been uncovered, the specific functions of the circadian genes are not very clear. It has been reported that knocking down circadian genes by microRNA is a u...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmu007
更新日期:2014-04-01 00:00:00
abstract::It has been established that hyaluronic acid (HA) glycans (nHA) and oligosaccharide (oHA) exert different effects on the biological function of the vascular endothelial cell (EC), resulting in altered regulation of angiogenesis. However, the specific mechanism is still unclear. Our study focused on the effects of nHA ...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmr094
更新日期:2011-12-01 00:00:00
abstract::The study was undertaken to examine the effects of C-peptide on glomerular volume (V(GLOM)), mesangial matrix synthesis, and degradation in streptozotocin (STZ)-diabetic rats with poor or moderate glycemic control. Series 1 (poor glycemic control) included groups of healthy rats, hyperglycemic rats, diabetic insulin-t...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmq100
更新日期:2010-12-01 00:00:00
abstract::Nuclear factor kappa B (NF-κB) plays a prominent role in the pathogenesis of infectious diseases. Staphylococcus aureus (S. aureus), which can attach to and invade human osteoblasts, is the most common causative agent of osteomyelitis. To determine whether S. aureus can activate NF-κB in human osteoblasts and explore ...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmq096
更新日期:2010-12-01 00:00:00
abstract::The present study aims to characterize the effect of chronic intermittent hypoxia and HIF1α on the non-alcoholic steatohepatitis (NASH) process in mice, and to explore the role of the Treg/Th17 balance in the formation of NASH inflammation and fibrosis. To achieve this purpose, simple steatosis was induced in mice by ...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmy131
更新日期:2018-12-01 00:00:00
abstract::The quality control (QC) system of the endoplasmic reticulum (ER) is an important monitoring mechanism in the protein maturation process, which ensures export of properly folded proteins from the ER. Incorrectly or incompletely folded proteins are retained in the ER for refolding or degradation by the ER-residing prot...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章,评审
doi:10.1111/j.1745-7270.2006.00156.x
更新日期:2006-04-01 00:00:00
abstract::Metformin, a first line medication for type II diabetes, initially entered the spotlight as a promising anti-cancer agent due to epidemiologic reports that found reduced cancer risk and improved clinical outcomes in diabetic patients taking metformin. To uncover the anti-cancer mechanisms of metformin, preclinical stu...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章,评审
doi:10.1093/abbs/gmx106
更新日期:2018-02-01 00:00:00
abstract::Adiponectin, an adipokine synthesized and secreted majorly by adipose tissue, is reported to exert cardioprotective properties via anti-inflammation and antiapoptosis. Lipopolysaccharide (LPS) is a common inflammation and apoptosis inducer of cardiomyocytes. However, few studies have reported the roles of adiponectin ...
journal_title:Acta biochimica et biophysica Sinica
pub_type: 杂志文章
doi:10.1093/abbs/gmy162
更新日期:2019-02-01 00:00:00