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Title: Molecular cloning of HBV S-protein mutants for expression in human HepG2 liver cell line
Authors: Nassif, Ibrahim
Advisors: Chaar, Mira El 
Tawk, Lina 
Keywords: Occult HBV, mammalian expression system, blood donors, transfusion infections, HBsAg mutations, HepG2, cloning, transfection, transformation, S gene.
Subjects: Hepatitis B
Hepatitis B virus
Dissertations, Academic
University of Balamand--Dissertations
Issue Date: 2020
Occult hepatitis B virus (HBV) infection (OBI) is defined as low plasma level of HBV DNA with undetectable HBV surface antigen (HBsAg). Multiple amino acid substitutions in the S protein may affect the HbsAg secretion and detection by commercial assays. In the current study, a cell culture system was optimized and will be used to study the potential role of OBI specific amino acid substitutions in the S protein. A total of 10 HBV mutants were selected from OBI blood donors. Surface gene amplification using gene specific primers were cloned in a plasmid, transformed in competent cell line and transfected in HepG2 cells. After several attempts of optimization, successful cloning method and culturing of HepG2 cell line were achieved. Optimized protocols for transfecting mutant HBsAg are currently available and will be used to study the in vitro effect of HBV amino acid substitutions.
Includes bibliographical references (p. 47-53)
Rights: This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the personal and educational use exceptions must be obtained from the copyright holder
Ezproxy URL: Link to full text
Type: Thesis
Appears in Collections:UOB Theses and Projects

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