Related Experiment Video
Updated: Aug 4, 2026

09:21
Production, Purification, and Quality Control for Adeno-associated Virus-based Vectors
Published on: January 29, 2019
38.4K
Adeno-associated virus: fit to serve
Eric Zinn1, Luk H Vandenberghe1
1Schepens Eye Research Institute, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, United States.
Current Opinion in Virology
|August 17, 2014
Summary
Adeno-associated virus (AAV) is a safe gene therapy vector due to its capsid. We explore AAV evolution and engineering strategies to improve its therapeutic applications.
Area of Science:
- Virology
- Gene Therapy
- Evolutionary Biology
Background:
- Adeno-associated virus (AAV) is a parvovirus with no known human disease association.
- Its broad tropism and limited host response make it a promising gene therapy vector.
- The viral capsid determines these traits and is subject to evolutionary pressures.
Purpose of the Study:
- To explore the evolutionary path of AAV and related parvoviruses.
- To examine how natural selection has shaped AAV phenotypes relevant to gene therapy.
- To discuss directed evolution and engineering strategies for improving AAV vectors.
Main Methods:
- Review of evolutionary pathways of AAV and other parvoviruses.
- Analysis of capsid protein evolution in relation to host interaction.
- Examination of directed evolution and engineering techniques.
Main Results:
- AAV's evolutionary history reveals key adaptations for its use in gene therapy.
- Capsid variability is a significant factor shaped by replication pressures.
- Natural selection provides insights into optimizing AAV for therapeutic gene transfer.
Conclusions:
- Understanding AAV evolution is crucial for advancing gene therapy.
- Engineering strategies based on evolutionary principles can overcome current AAV limitations.
- AAV remains a highly attractive platform for future gene transfer applications.
Related Concept Videos
Retroviruses
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
Viral Meningitis
Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Rabies
Rabies is a lethal zoonotic disease caused by a single-stranded, negative-sense RNA virus of the Lyssavirus genus, within the family Rhabdoviridae. Its primary mode of transmission to humans is through bites or saliva-contaminated scratches from infected mammals such as dogs, bats, raccoons, or foxes. Transmission can also occur if infectious saliva contacts abraded skin or intact mucous membranes, including the conjunctiva.Viral Entry and Early ReplicationOnce introduced at the bite or scratch...
Arboviral Encephalitis
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Cytomegalovirus Disease
Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Inhibitors Of Virion Release
Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...

