Related Experiment Video
Updated: Jul 17, 2026

Using Reverse Genetics to Manipulate the NSs Gene of the Rift Valley Fever Virus MP-12 Strain to Improve Vaccine Safety and Efficacy
Published on: November 1, 2011
Protective effects of a live attenuated SIV vaccine with a deletion in the nef gene
M D Daniel1, F Kirchhoff, S C Czajak
1New England Regional Primate Research Center, Harvard Medical School, Southborough, MA 01772.
Abstract:
Vaccine protection against the human immunodeficiency virus (HIV) and the related simian immunodeficiency virus (SIV) in animal models is proving to be a difficult task. The difficulty is due in large part to the persistent, unrelenting nature of HIV and SIV infection once infection is initiated. SIV with a constructed deletion in the auxiliary gene nef replicates poorly in rhesus monkeys and appears to be nonpathogenic in this normally susceptible host. Rhesus monkeys vaccinated with live SIV deleted in nef were completely protected against challenge by intravenous inoculation of live, pathogenic SIV. Deletion of nef or of multiple genetic elements from HIV may provide the means for creating a safe, effective, live attenuated vaccine to protect against acquired immunodeficiency syndrome (AIDS).
More Related Videos
Related Concept Videos
Viral Mutations
Retroviruses
Immunodeficiency Diseases
There are three main causes of immunodeficiency disorders...
Respiratory Syncytial Virus Disease
Inhibitors of Viral Protein Synthesis
Inhibitors of Virion Maturation and Assembly

