Entry
Name
Hepatitis B - Equus caballus (horse)
Description
Hepatitis B virus (HBV) is an enveloped virus and contains a partially double-stranded relaxed circular DNA (RC-DNA) genome. After entry into hepatocytes, HBV RC-DNA is transported to the nucleus and converted into a covalently closed circular molecule cccDNA. The cccDNA is the template for transcription of all viral RNAs including the pregenomic RNA (pgRNA), encoding for 7 viral proteins: large, middle, and small envelope proteins (LHBs, MHBs, and SHBs) that form the surface antigen (HBsAg), the core antigen (HBcAg), the e antigen (HBeAg), the HBV polymerase, and the regulatory protein X (HBx). The pgRNA interacts with the viral polymerase protein to initiate the encapsidation into the core particles. Through endoplasmic reticulum, the core particles finish assembling with the envelope proteins and are released. HBV infection leads to a wide spectrum of liver diseases raging from chronic hepatitis, cirrhosis to hepatocellular carcinoma. The mechanism of liver injury is still not clear. However, HBV proteins target host proteins, involved in a variety of functions, thus regulating transcription, cellular signaling cascades, proliferation, differentiation, and apoptosis.
Class
Human Diseases; Infectious disease: viral
BRITE hierarchy
Pathway map
Ortholog table
Organism
Equus caballus (horse) [GN:
ecb ]
Gene
100071701 HSPG2; basement membrane-specific heparan sulfate proteoglycan core protein isoform X1 [KO:K06255 ]
100033845 SMAD3; mothers against decapentaplegic homolog 3 isoform X1 [KO:K23605 ]
100052326 FASLG; tumor necrosis factor ligand superfamily member 6 [KO:K04389 ]
100051623 PIK3CD; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform isoform X1 [KO:K00922 ] [EC:2.7.1.153 ]
100058141 PIK3CA; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform isoform X1 [KO:K00922 ] [EC:2.7.1.153 ]
100051753 PIK3CB; phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit beta isoform [KO:K00922 ] [EC:2.7.1.153 ]
100052122 phosphatidylinositol 3-kinase regulatory subunit gamma isoform X1 [KO:K02649 ]
100050227 PIK3R1; phosphatidylinositol 3-kinase regulatory subunit alpha isoform X3 [KO:K02649 ]
100146348 PIK3R2; phosphatidylinositol 3-kinase regulatory subunit beta [KO:K02649 ]
100067894 NFKB1; nuclear factor NF-kappa-B p105 subunit isoform X4 [KO:K02580 ]
100071639 FAS; tumor necrosis factor receptor superfamily member 6 isoform X1 [KO:K04390 ]
100065378 NFATC1; nuclear factor of activated T-cells, cytoplasmic 1 isoform X1 [KO:K04446 ]
100052657 NFATC2; nuclear factor of activated T-cells, cytoplasmic 2 isoform X4 [KO:K17332 ]
100053856 NFATC3; nuclear factor of activated T-cells, cytoplasmic 3 isoform X1 [KO:K17333 ]
100054213 NFATC4; nuclear factor of activated T-cells, cytoplasmic 4 isoform X1 [KO:K17334 ]
100034011 STAT3; signal transducer and activator of transcription 3 [KO:K04692 ]
100069633 STAT1; signal transducer and activator of transcription 1-alpha/beta [KO:K11220 ]
100052513 STAT2; signal transducer and activator of transcription 2 [KO:K11221 ]
100054693 STAT4; signal transducer and activator of transcription 4 [KO:K11222 ]
100052904 STAT5A; signal transducer and activator of transcription 5A isoform X1 [KO:K11223 ]
100052954 signal transducer and activator of transcription 5B isoform X3 [KO:K11224 ]
100050053 STAT6; signal transducer and activator of transcription 6 [KO:K11225 ]
100050036 VDAC3; voltage-dependent anion-selective channel protein 3 [KO:K15041 ]
100053304 ATF2; cyclic AMP-dependent transcription factor ATF-2 isoform X1 [KO:K04450 ]
100066388 CREB1; cyclic AMP-responsive element-binding protein 1 [KO:K05870 ]
100062307 CREB3L4; cyclic AMP-responsive element-binding protein 3-like protein 4 isoform X1 [KO:K09048 ]
100064828 CREB3L2; cyclic AMP-responsive element-binding protein 3-like protein 2 [KO:K09048 ]
100057002 CREB3L1; cyclic AMP-responsive element-binding protein 3-like protein 1 isoform X1 [KO:K09048 ]
100067794 CREB3; LOW QUALITY PROTEIN: cyclic AMP-responsive element-binding protein 3 [KO:K09048 ]
100063153 CREB3L3; cyclic AMP-responsive element-binding protein 3-like protein 3 [KO:K09048 ]
100070334 ATF4; cyclic AMP-dependent transcription factor ATF-4 [KO:K04374 ]
100054803 CREB5; cyclic AMP-responsive element-binding protein 5 isoform X1 [KO:K09047 ]
100059348 ATF6B; cyclic AMP-dependent transcription factor ATF-6 beta isoform X1 [KO:K09049 ]
100053940 MYD88; myeloid differentiation primary response protein MyD88 [KO:K04729 ]
100064503 TIRAP; toll/interleukin-1 receptor domain-containing adapter protein [KO:K05403 ]
100070300 TAB1; TGF-beta-activated kinase 1 and MAP3K7-binding protein 1 isoform X1 [KO:K04403 ]
100060433 TAB2; TGF-beta-activated kinase 1 and MAP3K7-binding protein 2 isoform X1 [KO:K04404 ]
100066212 MAVS; mitochondrial antiviral-signaling protein isoform X2 [KO:K12648 ]
Compound
Reference
Authors
Caballero A, Tabernero D, Buti M, Rodriguez-Frias F
Title
Hepatitis B virus: The challenge of an ancient virus with multiple faces and a remarkable replication strategy.
Journal
Reference
Authors
Walsh R, Locarnini S
Title
Hepatitis B precore protein: pathogenic potential and therapeutic promise.
Journal
Reference
Authors
Liang TJ, Block TM, McMahon BJ, Ghany MG, Urban S, Guo JT, Locarnini S, Zoulim F, Chang KM, Lok AS
Title
Present and future therapies of hepatitis B: From discovery to cure.
Journal
Reference
Authors
Morikawa K, Suda G, Sakamoto N
Title
Viral life cycle of hepatitis B virus: Host factors and druggable targets.
Journal
Reference
Authors
Feitelson MA, Reis HM, Tufan NL, Sun B, Pan J, Lian Z
Title
Putative roles of hepatitis B x antigen in the pathogenesis of chronic liver disease.
Journal
Reference
Authors
Murata M, Matsuzaki K, Yoshida K, Sekimoto G, Tahashi Y, Mori S, Uemura Y, Sakaida N, Fujisawa J, Seki T, Kobayashi K, Yokote K, Koike K, Okazaki K
Title
Hepatitis B virus X protein shifts human hepatic transforming growth factor (TGF)-beta signaling from tumor suppression to oncogenesis in early chronic hepatitis B.
Journal
Reference
Authors
Yoo YG, Lee MO
Title
Hepatitis B virus X protein induces expression of Fas ligand gene through enhancing transcriptional activity of early growth response factor.
Journal
Reference
Authors
Zhang X, Zhang H, Ye L
Title
Effects of hepatitis B virus X protein on the development of liver cancer.
Journal
Reference
Authors
Benhenda S, Cougot D, Buendia MA, Neuveut C
Title
Hepatitis B virus X protein molecular functions and its role in virus life cycle and pathogenesis.
Journal
Reference
Authors
Benhenda S, Cougot D, Neuveut C, Buendia MA
Title
Liver cell transformation in chronic HBV infection.
Journal
Reference
Authors
Diao J, Khine AA, Sarangi F, Hsu E, Iorio C, Tibbles LA, Woodgett JR, Penninger J, Richardson CD
Title
X protein of hepatitis B virus inhibits Fas-mediated apoptosis and is associated with up-regulation of the SAPK/JNK pathway.
Journal
Reference
Authors
Park NH, Song IH, Chung YH
Title
Chronic hepatitis B in hepatocarcinogenesis.
Journal
Reference
Authors
Lin S, Zhang YJ
Title
Interference of Apoptosis by Hepatitis B Virus.
Journal
Reference
Authors
Zhang X, Dong N, Yin L, Cai N, Ma H, You J, Zhang H, Wang H, He R, Ye L
Title
Hepatitis B virus X protein upregulates survivin expression in hepatoma tissues.
Journal
Reference
Authors
Kim HJ, Kim SY, Kim J, Lee H, Choi M, Kim JK, Ahn JK
Title
Hepatitis B virus X protein induces apoptosis by enhancing translocation of Bax to mitochondria.
Journal
Reference
Authors
Ng SA, Lee C
Title
Hepatitis B virus X gene and hepatocarcinogenesis.
Journal
Reference
Authors
Cong YS, Yao YL, Yang WM, Kuzhandaivelu N, Seto E
Title
The hepatitis B virus X-associated protein, XAP3, is a protein kinase C-binding protein.
Journal
Reference
Authors
Panteva M, Korkaya H, Jameel S
Title
Hepatitis viruses and the MAPK pathway: is this a survival strategy?
Journal
Reference
Authors
Lee YH, Yun Y
Title
HBx protein of hepatitis B virus activates Jak1-STAT signaling.
Journal
Reference
Authors
Tan A, Yeh SH, Liu CJ, Cheung C, Chen PJ
Title
Viral hepatocarcinogenesis: from infection to cancer.
Journal
Reference
Authors
Chami M, Oules B, Paterlini-Brechot P
Title
Cytobiological consequences of calcium-signaling alterations induced by human viral proteins.
Journal
Reference
Authors
Ganem D
Title
Virology. The X files--one step closer to closure.
Journal
Reference
Authors
Chung TW, Lee YC, Kim CH
Title
Hepatitis B viral HBx induces matrix metalloproteinase-9 gene expression through activation of ERK and PI-3K/AKT pathways: involvement of invasive potential.
Journal
Reference
Authors
Gurtsevitch VE
Title
Human oncogenic viruses: hepatitis B and hepatitis C viruses and their role in hepatocarcinogenesis.
Journal
Reference
Authors
Schadler S, Hildt E
Title
HBV life cycle: entry and morphogenesis.
Journal
Reference
Authors
Ortega-Prieto AM, Dorner M
Title
Immune Evasion Strategies during Chronic Hepatitis B and C Virus Infection.
Journal
Reference
Authors
Nosratabadi R, Alavian SM, Zare-Bidaki M, Shahrokhi VM, Arababadi MK
Title
Innate immunity related pathogen recognition receptors and chronic hepatitis B infection.
Journal
Reference
Authors
Bagheri V, Askari A, Arababadi MK, Kennedy D
Title
Can Toll-Like Receptor (TLR) 2 be considered as a new target for immunotherapy against hepatitis B infection?
Journal
Reference
Authors
Zhang E, Lu M
Title
Toll-like receptor (TLR)-mediated innate immune responses in the control of hepatitis B virus (HBV) infection.
Journal
Reference
Authors
Yu S, Chen J, Wu M, Chen H, Kato N, Yuan Z
Title
Hepatitis B virus polymerase inhibits RIG-I- and Toll-like receptor 3-mediated beta interferon induction in human hepatocytes through interference with interferon regulatory factor 3 activation and dampening of the interaction between TBK1/IKKepsilon and DDX3.
Journal
Reference
Authors
Revill P, Yuan Z
Title
New insights into how HBV manipulates the innate immune response to establish acute and persistent infection.
Journal
Reference
Authors
Hopcraft SE, Damania B
Title
Tumour viruses and innate immunity.
Journal
Reference
Authors
Dandri M, Locarnini S
Title
New insight in the pathobiology of hepatitis B virus infection.
Journal
Related pathway
ecb04620 Toll-like receptor signaling pathway
ecb04622 RIG-I-like receptor signaling pathway
KO pathway
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