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Li G, Yang D, Liu X, Zhang T, Liu H, Zou J, Xu Z, Chen X, Dai L, Chen H, Lu F. Precore mutation enhances viral replication to facilitate persistent infection especially in HBeAg-negative patients. Virol Sin 2024; 39:319-330. [PMID: 38492851 PMCID: PMC11074699 DOI: 10.1016/j.virs.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 03/11/2024] [Indexed: 03/18/2024] Open
Abstract
Naturally occurred precore (PC, G1896A) and/or basal core promoter (BCP, A1762T/G1764A) mutations are prevalent in chronic HBV-infected patients, especially those under HBeAg-negative status. However, the replicative capacity of HBV with PC/BCP mutations remains ambiguous. Herein, meta-analysis showed that, only under HBeAg-negative status, the serum HBV DNA load in patients with PC mutation was 7.41-fold higher than those without the mutation. Both PC mutation alone and BCP + PC mutations promoted HBV replication in cell and hydrodynamic injection mouse models. In human hepatocyte chimeric mouse model, BCP + PC mutations led to elevated replicative capacity and intrahepatic core protein accumulation. Mechanistically, preC RNA harboring PC mutation could serve as mRNA to express core and P proteins, and such pgRNA-like function favored the maintenance of cccDNA pool under HBeAg-negative status. Additionally, BCP + PC mutations induced more extensive and severe human hepatocyte damage as well as activated endoplasmic reticulum stress and TNF signaling pathway in livers of chimeric mice. This study indicates that HBeAg-negative patients should be monitored on HBV mutations regularly and are expected to receive early antiviral treatment to prevent disease progression.
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Affiliation(s)
- Guixin Li
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing, 100044, China
| | - Danli Yang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Xin Liu
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Ting Zhang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Hui Liu
- Baruch S. Blumberg Institute, Doylestown, PA, 18901, USA
| | - Jun Zou
- Shenzhen Sanyuansheng Biotechnology Co., Ltd, Shenzhen, 518000, China
| | - Zimeng Xu
- Precision Medicine Center of Zhengzhou University, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiangmei Chen
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Lizhong Dai
- Peking University-Sansure Biotech Joint Laboratory of Molecular Medicine, Sansure Biotech Co., Ltd, Changsha, 410205, China.
| | - Hongsong Chen
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing, 100044, China.
| | - Fengmin Lu
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing International Cooperation Base for Science and Technology on NAFLD Diagnosis, Beijing, 100044, China; Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University, Beijing, 100191, China.
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Sevic I, Elizalde MM, González López Ledesma MM, Flichman DM, Campos RH. Analysis of fitness differences of hepatitis B virus genotypes D and F using a cotransfection assay. Arch Virol 2018; 164:447-455. [PMID: 30417200 DOI: 10.1007/s00705-018-4090-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 10/17/2018] [Indexed: 12/24/2022]
Abstract
Hepatitis B virus (HBV) circulates as a collection of genetically related variants that evolve throughout the chronic infection. Those viral variants that have the greatest fitness are fixed. We recently showed different fitness for HBV variants involved in two epidemiological situations. To understand these fitness differences better, we determined the levels of extracellular HBV DNA, the synthesis of HBV DNA intermediates, and the expression of HBeAg and HBsAg in transfection and cotransfection assays. Our results show that for the subgenotype (sgt) D1, which has an 8-nucleotide deletion (sgtD1del) and exhibits lower fitness, the levels of extracellular DNA and intracellular replicative intermediates were much lower than with sgtD1wt or sgtD1mut (G1896A), which had higher fitness. In addition, in the cotransfection assay, sgtD1del inhibited sgtD1mut but not sgtD1wt replication. We also found that sgtF1b, which exhibits higher fitness, produces significantly higher levels of both extracellular DNA and intracellular replicative intermediates than does the lower-fitness sgtF4. These results demonstrate a relationship between fitness and the replicative ability of the HBV genome in the transfection assay. In addition, the data obtained by cotransfecting cells with sgtD1del and sgtD1mut provide new information about the impact of simultaneous replication of two viral variants in the same cell system on HBV replication.
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Affiliation(s)
- Ina Sevic
- Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina. .,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - María Mercedes Elizalde
- Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - María Mora González López Ledesma
- Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Diego Martin Flichman
- Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Rodolfo Héctor Campos
- Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Clinical evaluation of hepatitis B core-related antigen in chronic hepatitis B and hepatocellular carcinoma patients. Clin Chim Acta 2018; 486:237-244. [PMID: 30025756 DOI: 10.1016/j.cca.2018.07.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND Hepatitis B core-related antigen (HBcrAg) has been revealed as an important marker of Hepatitis B virus (HBV) infection recently. We aimed to evaluate the HBcrAg assay for indication of HBV loads in chronic hepatitis B (CHB) and hepatocellular carcinoma (HCC) patients and assess the association between HBcrAg/cccDNA and HCC recurrence. METHODS HBcrAg was measured by chemiluminescence enzyme immunoassay. Intrahepatic covalently closed circular DNA (cccDNA) was measured by real-time PCR with TaqMan fluorescent probes based on liver specimens from 89 HCC patients. RESULTS HBcrAg correlated positively with HBV DNA irrespective of HBeAg status. Both HBcrAg and HBV DNA were associated with cccDNA in patients with elevated serum HBV DNA (>4 log IU/mL). In patients with non-elevated HBV DNA (≤4 log IU/mL), no relationship between HBV DNA and cccDNA was observed, but we still documented a modest correlation between HBcrAg and cccDNA. Finally, the recurrence-free survival rates were significantly lower in HCC patients with high intrahepatic cccDNA and serum HBcrAg levels than those with low cccDNA/HBcrAg levels (p = 0.035, p = 0.003 respectively). CONCLUSIONS HBcrAg not only can serve as a biomarker to assess HBV loads in patients as well as provide a good method for monitoring cccDNA in HCC, but also can be used as a good prognostic predictor for HCC patients.
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Liu Z, Jiang L, Liang G, Song E, Jiang W, Zheng Y, Gong C. Hepatitis B virus reactivation in breast cancer patients undergoing chemotherapy: A review and meta-analysis of prophylaxis management. J Viral Hepat 2017; 24:561-572. [PMID: 28072494 DOI: 10.1111/jvh.12672] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 12/15/2016] [Indexed: 12/15/2022]
Abstract
Hepatitis B virus (HBV) reactivation during or after chemotherapy in patients with breast cancer has become a remarkable clinical problem. Prophylactic nucleos(t)ide analogues (NAs) are recommended for patients with breast cancer who are hepatitis B surface antigen (HBsAg) positive before chemotherapy. We performed an up-to-date meta-analysis to compare the efficacy of prophylactic lamivudine use with nonprophylaxis in HBsAg-positive breast cancer patients undergoing chemotherapy. PubMed, the Cochrane Library and China National Knowledge Infrastructure (CNKI) databases were searched for relevant articles until June 2016. Eligible articles comparing the efficacy of prophylactic lamivudine use with nonprophylaxis in HBsAg-positive breast cancer patients undergoing chemotherapy were identified. Eight studies which had enrolled 709 HBsAg-positive breast cancer patients undergoing chemotherapy were analysed. Lamivudine prophylaxis significantly reduced the rates of chemotherapy-associated hepatitis B flares in chronic hepatitis B in breast cancer compared with patients with nonprophylaxis (odds ratio [OR]=0.15, 95% confidence interval [CI]: 0.07-0.35, P<.00001). Chemotherapy disruption rates attributed to HBV reactivation in the prophylaxis groups were significantly lower than the nonprophylaxis groups (OR=0.17, 95% CI: 0.07-0.43, P=.0002). Patients with lamivudine prophylaxis had a higher risk for tyrosine-methionine-aspartate-aspartate (YMDD) motif mutations than patients with nonprophylaxis (OR=6.33, 95% CI: 1.01-39.60, P=.05). Prophylactic antiviral therapy management is necessary for HBsAg-positive breast cancer patients undergoing chemotherapy, in spite of high correlation with lamivudine-resistant HBV variants with YMDD motif mutations.
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Affiliation(s)
- Z Liu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - L Jiang
- Department of oncology Surgery, The First Hospital of Lanzhou University, Lanzhou, China
| | - G Liang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - E Song
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - W Jiang
- Cardiff China Medical Research Collaborative, School of Medicine, Cardiff University, Cardiff, UK
| | - Y Zheng
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Division of Medicine, Liver Failure Group ILDH, UCL Medical School, London, UK
| | - C Gong
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Cardiff China Medical Research Collaborative, School of Medicine, Cardiff University, Cardiff, UK
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HBV DNA genome co-transfection procedure for the evaluation of relative fitness. PLoS One 2017; 12:e0175543. [PMID: 28472081 PMCID: PMC5417490 DOI: 10.1371/journal.pone.0175543] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 03/28/2017] [Indexed: 12/18/2022] Open
Abstract
Hepatitis B virus (HBV) has a high mutation rate and exists as a mixture of genetically different but closely related variants. We present a HBV DNA co-transfection fitness assay and use it to evaluate the relative fitness of different HBV variants in two scenarios: seroconversion process and occupation of an ecological niche. In the seroconversion experiment, subgenotype D1 (sgtD1) deletion (1763-1770) had significantly lower fitness comparing with both sgtD1 wild type and sgtD1mut G1896A, while, in the case of occupation of ecological niche experiment, the results showed the same relative fitness between all of the genotype combinations, except F1b-F4. In this case sgtF1b clearly overgrow sgtF4, which is in accordance with the observation that F1b is the most prevalent in the new infections in Argentina. In summary, we present a method aimed to evaluate HBV viral fitness which improve the analysis of the relative frequency of viral variants during the HBV infection process.
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