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Yu Y, Zhang Y, Dai Y, Sun Q, Jiang C, Xu X, Mei C, Cheng J. Analysis of S gene characteristic sequences and changes in properties of protein expression in HBV ASCs with low-level HBsAg. Front Med (Lausanne) 2022; 9:948842. [PMID: 36186824 PMCID: PMC9516100 DOI: 10.3389/fmed.2022.948842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 08/22/2022] [Indexed: 11/26/2022] Open
Abstract
Objective We detected the serum HBsAg immune complex (HBsAg-CIC) and sequenced the HBV S gene in these patients to reveal the association between sustained low-level expression of HBsAg and mutated S gene sequence characteristics, protein function changes, and HBsAg immune complex formation. Methods A total of 204 samples were collected and divided into high-level (n = 60, HBsAg level >10 IU/ml) and low-level (n = 144, HBsAg level ≤ 10 IU/ml) HBsAg groups. The clinical and epidemiological data of the two groups were statistically compared. According to different serological patterns and genotypes, the HBsAg-CIC results of the high-level and low-level HBsAg groups were divided into different subgroups, and then the HBsAg-CIC positive rates among different subgroups were compared. We sequenced the S gene of HBV from the two groups and identified the relevant mutations in the MHR of the S gene. In addition, we compared the changes in HBsAg protein properties and functions after hot spot mutation in the MHR of the S gene. Results Comparing the positive rates of HBsAg-CIC under different serological patterns and genotypes in the two groups, the HBsAg-CIC positive rate was higher in the low-level HBsAg group. Moreover, there was weak correlation between HBsAg-CIC and HBsAg or HBV DNA in both groups (r = 0.32, 0.27, 0.41, 0.48; P < 0.05). Sequencing of S gene in the two groups, showed that the hot-spot mutations were T126A, M133L/T/S, and F134L/T/I in MHR of S gene of genotype B, and hot-spot mutations were Q101R and I126S/T in MHR of S gene of genotype C. Additionally, the positive rate of MHR mutation in the S gene from HBsAg-CIC positive patients was higher in the low-level HBsAg group. Conclusion The host immune process of clearing HBV seems to have multiple site mutations in MHR, which changes the physicochemical properties and functions of HBsAg and intensifies the formation of HBsAg-CIC, thus avoiding the effective recognition of HBsAg by the host and resulting in immune tolerance between the host and HBV, which may be one of the formation mechanisms of sustained low-level expression of HBsAg in the serum of HBV-infected persons.
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Affiliation(s)
- Yu Yu
- School of Laboratory Medicine, Bengbu Medical College, Bengbu, China
- Department of Clinical Research, The 903rd Hospital of PLA, Hangzhou, China
| | - Yingqiang Zhang
- Department of Clinical Research, The 903rd Hospital of PLA, Hangzhou, China
| | - Yuzhu Dai
- School of Laboratory Medicine, Bengbu Medical College, Bengbu, China
- Department of Clinical Research, The 903rd Hospital of PLA, Hangzhou, China
| | - Qingyang Sun
- Department of Clinical Research, The 903rd Hospital of PLA, Hangzhou, China
| | - Chun Jiang
- Department of Clinical Laboratory, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
| | - Xujian Xu
- Department of Biotechnology, The University of Tokyo, Tokyo, Japan
| | - Chuanzhong Mei
- School of Laboratory Medicine, Bengbu Medical College, Bengbu, China
- Chuanzhong Mei
| | - Jun Cheng
- School of Laboratory Medicine, Bengbu Medical College, Bengbu, China
- Department of Clinical Research, The 903rd Hospital of PLA, Hangzhou, China
- Faculty of Graduate Studies, Jiangsu University, Zhenjiang, China
- *Correspondence: Jun Cheng
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Xiao Y, Cao J, Zhang Z, Zeng C, Ou G, Shi J, Liu Z, Li Y, Deng J, Xu Y, Zhang W, Li J, Li T, Zhuang H, Lu S, Xiang K. Hepatitis B Virus Pregenomic RNA Reflecting Viral Replication in Distal Non-tumor Tissues as a Determinant of the Stemness and Recurrence of Hepatocellular Carcinoma. Front Microbiol 2022; 13:830741. [PMID: 35464922 PMCID: PMC9021960 DOI: 10.3389/fmicb.2022.830741] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/22/2022] [Indexed: 11/24/2022] Open
Abstract
Background The existence of hepatic cancer stem cells (CSCs) contributes to chemotherapy resistance and cancer recurrence after treatment or surgery. However, very little is known about the hepatitis B virus (HBV) replication and its relationship with the stemness of hepatocellular carcinoma (HCC) in HBV-related HCC patients. Methods We collected tumor tissues (T), matched adjacent non-tumor tissues (NT), and distal non-tumor tissues (FNT) from 55 HCC patients for analysis. Results We found HBV DNA levels were higher in T samples than NT and FNT samples, but HBV pgRNA and total RNA expressed lower in T samples. HBV pgRNA and total RNA correlate to HBV DNA among the T, NT, and FNT samples. Further evidence for HBV replication in T samples was provided by HBV S, reverse transcriptase, and X genes sequencing, showing that HBV sequences and genotypes differed between T and matched NT and FNT samples. HBV pgRNA and total RNA showed more frequent significant correlations with CSC markers in NT samples in HBsAg-positive patients. The markers CD133 and OCT4 expressed higher in FNT samples, and HBV replication marker of pgRNA levels was significantly positively correlated to these two markers only in FNT samples. The detection of pgRNA and OCT4 in FNT was correlated to the recurrence of HCC in the resection of HCC patients. Analysis of HBV receptor, sodium taurocholate co-transporting polypeptide (NTCP), showed that NTCP was correlated negatively to CSC markers in T samples, except for the CD44. Conclusion HBV replication may present in HCC with a weak transcriptomic signature. Moreover, the expression level of HBV pgRNA in distal non-tumor tissues is a sensitive marker for HBV replication and prognosis, which is associated with CSC-related markers especially with OCT4 in distal non-tumor tissues and recurrence of HCC in HBV-related HCC patients.
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Affiliation(s)
- Yiwei Xiao
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Junning Cao
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA Genera Hospital, Beijing, China
| | - Ze Zhang
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA Genera Hospital, Beijing, China
| | - Chaoting Zeng
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA Genera Hospital, Beijing, China
| | - Guomin Ou
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Jihang Shi
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA Genera Hospital, Beijing, China
| | - Zhixiu Liu
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Division of Pathology and Laboratory Medicine, Hebei Yanda Lu Daopei Hospital, Langfang, China
| | - Yi Li
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Juan Deng
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Yinzhe Xu
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA Genera Hospital, Beijing, China
| | - Wenwen Zhang
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA Genera Hospital, Beijing, China
| | - Jie Li
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Tong Li
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Peking University-YHLO Joint Laboratory for Molecular Diagnostic of Infectious Disease, Peking University, Beijing, China
| | - Hui Zhuang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Peking University-YHLO Joint Laboratory for Molecular Diagnostic of Infectious Disease, Peking University, Beijing, China
| | - Shichun Lu
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA Genera Hospital, Beijing, China
| | - Kuanhui Xiang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.,Peking University-YHLO Joint Laboratory for Molecular Diagnostic of Infectious Disease, Peking University, Beijing, China
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Song J, Ou G, Lai X, Tian X, Wang L, Zhang K, Wang L, Zhang X, Zhao C, Zhuang H, Xiang K, Li T. The enhancement role of Matrigel on HBV infection in HepG2-NTCP cells. J Virol Methods 2021; 299:114345. [PMID: 34728272 DOI: 10.1016/j.jviromet.2021.114345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 10/15/2021] [Accepted: 10/28/2021] [Indexed: 12/24/2022]
Abstract
The hepatoma cell lines stably expressing sodium taurocholate cotransporting polypeptide (NTCP), the receptor of hepatitis B virus (HBV) infection, serve as important infection models for studying viral biology and drug discovery. However, the efficiency of infection greatly varies. In this study, we studied the effects and potential mechanisms of Matrigel® hESC-qualified (M-hq), a biological basement membrane matrix commonly used in cell culture, on promotion HBV in vitro infection in HepG2-NTCP cells. For the first time, our findings demonstrate that M-hq could enhance the infection efficiency of cell culture-derived HBV with no impact on the cell viability, the HBV transcription and response to antiviral treatments. The infection enhancement is reproducible and is suggested to occur at HBV attachment step. Our study suggests that this novel system is applicable for studying HBV biology and new drugs.
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Affiliation(s)
- Ji Song
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Guomin Ou
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Xinyuan Lai
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Xing Tian
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Luwei Wang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China; Department of Clinical Laboratory Center, Beijing Children's Hospital, Capital Medical University, National Center for Children Health, Beijing, 100045, China
| | - Kai Zhang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Lei Wang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Xuechao Zhang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Chengyu Zhao
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Hui Zhuang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Kuanhui Xiang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China.
| | - Tong Li
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China.
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