Recent developments with advancing gene therapy to treat chronic infection with hepatitis B virus.

Abstract:

PURPOSE OF REVIEW:The available vaccine and therapies against hepatitis B virus (HBV) rarely eliminate chronic infection with the virus. High mortality resulting from complicating cirrhosis and hepatocellular carcinoma makes improving anti-HBV therapy an important priority. Recent advances with using gene therapy to counter HBV have potential and are the focus of this review. RECENT FINDINGS:The stable replication-competent HBV intermediate comprising covalently closed circular DNA (cccDNA) is the template for expression of all viral genes. Inactivating cccDNA has thus been a focus of research aimed at achieving cure for HBV infection. Many studies have reported profound inhibition of replication of the virus using silencing and editing techniques. Therapeutic gene silencing with synthetic short interfering RNA is now in clinical trials. Ability to mutate and permanently inactivate cccDNA with engineered gene editors, such as those derived from CRISPR/Cas or TALENs, is particularly appealing but has not yet reached clinical evaluation. SUMMARY:Gene silencing and gene editing potentially provide the means to cure HBV infection. However, achieving efficient delivery of therapeutic sequences, ensuring their specificity of action and progress with other antiviral strategies are likely to determine utility of gene therapy for chronic HBV infection.

journal_name

Curr Opin HIV AIDS

authors

Maepa MB,Jacobs R,van den Berg F,Arbuthnot P

doi

10.1097/COH.0000000000000623

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

200-207

issue

3

eissn

1746-630X

issn

1746-6318

journal_volume

15

pub_type

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