Hbv Dna Integration
Hbv Dna Integration - Related Videos
09:31
Amplification, Next-generation Sequencing, and Genomic DNA Mapping of Retroviral Integration Sites
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Cited by 56 •
2016
We describe a protocol for amplifying retroviral integration sites from the genomic DNA of infected cells, sequencing the amplified virus-host junctions, and then mapping these sequences to a reference genome. We also describe techniques to quantify the distribution of integration sites relative to various genomic annotations using BEDTools.
07:58
Cell-Free DNA Integrity Analysis in Urine Samples
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Cited by 16 •
2017
A method for analyzing DNA integrity in the cell-free supernatant fraction of urine samples is proposed. The method is suitable for early detection of urological malignancies and has proven accurate for the early diagnosis of bladder cancer.
10:58
Transposon Mediated Integration of Plasmid DNA into the Subventricular Zone of Neonatal Mice to Generate Novel Models of Glioblastoma
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Cited by 44 •
2015
Here we describe an efficient and versatile protocol to induce, monitor and analyze novel glioblastomas (GBM) using transposon DNA injected into the ventricles of neonatal mice. Cells of the subventricular zone, which take up the plasmid, transform, proliferate and generate tumors with histo-pathological characteristics of human GBM.
10:16
Assessing Stem Cell DNA Integrity for Cardiac Cell Therapy
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Cited by 4 •
2019
Here, we provide a detailed description of an experimental setup for an analysis of the assessment of DNA integrity in stem cells prior to cell transplantation.
11:14
Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection
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Cited by 3 •
2018
We describe here the in vitro generation of HBV DNA via a Hepatitis B virus infection system and the highly sensitive detection of its (1–2 copies) integration using inverse nested PCR.
FAQs
These outcomes arise from different viral DNA forms and have different biological roles. Episomal covalently closed circular DNA, or cccDNA, supports viral transcription, whereas integrated HBV DNA becomes joined to host chromosomal DNA. Consequently, integration represents a change in the physical location and potential effects of viral genetic material rather than the formation of the transcription-supporting episomal reservoir.
HBV DNA integration can occur when linear viral DNA intermediates are joined to cellular DNA through host DNA repair pathways. The process therefore does not depend on a dedicated viral integration enzyme. This mechanism helps explain why integration can occur at diverse genomic sites and why the resulting host-virus junctions may differ among infected hepatocytes.
Because integrated HBV DNA occurs at diverse sites in the host genome, its consequences may vary with the surrounding cellular DNA. An integration may contribute to genomic instability or alter gene regulation, linking the event to changes in hepatocyte biology. Characterizing integration sites can therefore provide information about how persistent viral material may influence disease-associated cellular changes.
Integrated HBV DNA may encode viral proteins that shape immune responses, giving integration significance beyond its effects on host DNA. The proteins produced from integrated material can contribute to the immunological environment during infection, although their impact depends on whether the relevant integrated sequences remain capable of encoding those products. This makes integration relevant to both viral persistence and immunology.
Detection and characterization establish whether viral DNA has become integrated and help define its relationship to the host genome. Examining these events can clarify the persistence of HBV genetic material in hepatocytes, identify patterns of genomic disruption or altered regulation, and support investigation of links between chronic infection and hepatocellular carcinoma risk.
Integrated HBV DNA may persist in hepatocytes, so its presence provides information about long-lasting viral genetic material even when the main biological role of cccDNA is considered separately. Studying both forms gives a more complete view of chronic infection, including how persistent viral sequences may affect cells, immune responses, and interpretation of treatment limitations.
Integration is relevant to antiviral treatment limitations because integrated viral DNA can remain in hepatocytes as part of the host genome. This persistence differs from the episomal cccDNA pool that supports viral transcription, so assessing treatment effects requires distinguishing these forms. Characterizing integrated sequences helps researchers interpret why eliminating active viral processes may not remove every form of viral genetic material.