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The human immunodeficiency viruses (HIV) are two species of Lentivirus that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. Without treatment, the average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype.
A microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope.
Structural biology, as defined by the Journal of Structural Biology, deals with structural analysis of living material at every level of organization.
An HIV vaccine is a potential vaccine that could be either a preventive vaccine or a therapeutic vaccine, which means it would either protect individuals from being infected with HIV or treat HIV-infected individuals.
The genome and proteins of HIV (human immunodeficiency virus) have been the subject of extensive research since the discovery of the virus in 1983. "In the search for the causative agent, it was initially believed that the virus was a form of the Human T-cell leukemia virus (HTLV), which was known at the time to affect the human immune system and cause certain leukemias. However, researchers at the Pasteur Institute in Paris isolated a previously unknown and genetically distinct retrovirus in patients with AIDS which was later named HIV." Each virion comprises a viral envelope and associated matrix enclosing a capsid, which itself encloses two copies of the single-stranded RNA genome and several enzymes. The discovery of the virus itself occurred two years following the report of the first major cases of AIDS-associated illnesses.
Pamela Jane Bjorkman NAS, AAAS is an American biochemist and molecular biologist. She is the David Baltimore Professor of Biology and Biological Engineering at the California Institute of Technology (Caltech). Her research centers on the study of the three-dimensional structures of proteins related to Class I MHC, or Major Histocompatibility Complex, proteins of the immune system, and proteins involved in the immune responses to viruses. Bjorkman's goal is to improve current therapeutic applications. Bjorkman is most well known as a pioneer in the field of structural biology.
In virology, a spike protein or peplomer protein is a protein that forms a large structure known as a spike or peplomer projecting from the surface of an enveloped virus. The proteins are usually glycoproteins that form dimers or trimers.
Xuong Nguyen-Huu is a pioneer of protein crystallography technology. His research focuses on the development of novel methods, such as protein crystallography and cryo-electron microscopy, for the determination of protein structures and biological macromolecules.
The P24 capsid protein is the most abundant HIV protein with each virus containing approximately 1,500 to 3,000 p24 molecules. It is the major structural protein within the capsid, and it is involved in maintaining the structural integrity of the virus and facilitating various stages of the viral life cycle, including viral entry into host cells and the release of new virus particles. Detection of p24 protein's antigen can be used to identify the presence of HIV in a person's blood, however, more modern tests have taken their place. After approximately 50 days of infection, the p24 antigen is often cleared from the bloodstream entirely.
Peter S. Kim is an American scientist. He was president of Merck Research Laboratories (MRL) 2003–2013 and is currently Virginia & D.K. Ludwig Professor of Biochemistry at Stanford University, Institute Scholar at Stanford ChEM-H, and Lead Investigator of the Infectious Disease Initiative at the Chan Zuckerberg Biohub.
William A. Haseltine is an American scientist, businessman, author, and philanthropist. He is known for his groundbreaking work on HIV/AIDS and the human genome.
Stephen C. Harrison is professor of biological chemistry and molecular pharmacology, professor of pediatrics, and director of the Center for Molecular and Cellular Dynamics of Harvard Medical School, head of the Laboratory of Molecular Medicine at Boston Children's Hospital, and investigator of the Howard Hughes Medical Institute.
Almyra Oveta Fuller was an associate professor of microbiology and immunology at University of Michigan Medical School. She served as the director of the African Studies Center (ASC), faculty in the ASC STEM Initiative at the University of Michigan (U-M) and an adjunct professor at Payne Theological Seminary. Fuller was a virologist and specialized in research of Herpes simplex virus, as well as HIV/AIDS. Fuller and her research team discovered a B5 receptor, advancing the understanding of Herpes simplex virus and the cells it attacks.
Raghavan Varadarajan is an Indian biophysicist and a professor at the Indian Institute of Science. He is known for his researches in the fields of protein structure and protein folding and his contributions in developing vaccines and drugs for treating a type of fatal influenza and HIV-1. He is a former J. C. Bose National Fellow of the Department of Science and Technology and an elected fellow of the Indian Academy of Sciences and the Indian National Science Academy. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, in 2002, for his contributions to biological sciences.
Jacques Dubochet is a retired Swiss biophysicist. He is a former researcher at the European Molecular Biology Laboratory in Heidelberg, Germany, and an honorary professor of biophysics at the University of Lausanne in Switzerland.
Cryogenic electron microscopy (cryo-EM) is a cryomicroscopy technique applied on samples cooled to cryogenic temperatures. For biological specimens, the structure is preserved by embedding in an environment of vitreous ice. An aqueous sample solution is applied to a grid-mesh and plunge-frozen in liquid ethane or a mixture of liquid ethane and propane. While development of the technique began in the 1970s, recent advances in detector technology and software algorithms have allowed for the determination of biomolecular structures at near-atomic resolution. This has attracted wide attention to the approach as an alternative to X-ray crystallography or NMR spectroscopy for macromolecular structure determination without the need for crystallization.
Bette Korber is an American computational biologist focusing on the molecular biology and population genetics of the HIV virus that causes infection and eventually AIDS. She has contributed heavily to efforts to obtain an effective HIV vaccine. She created a database at Los Alamos National Laboratory that has enabled her to design novel mosaic HIV vaccines, one of which is currently in human testing in Africa. The database contains thousands of HIV genome sequences and related data.
Christopher O. Barnes is an American chemist who is an assistant professor at Stanford University. During the COVID-19 pandemic, he studied the structure of the coronavirus spike protein and the antibodies that attack them. He was named one of ten "Scientists to watch" by Science News in 2022.
Giulia Zanetti is a British Italian biologist and Professor of Molecular Biology at the Francis Crick Institute. She develops advanced imaging techniques to understand membrane transport pathways. She was awarded the 2021 Biochemical Society Colworth Medal.
References
- ↑ Science Daily, "Research Produces Images Of AIDS Virus That May Shape Vaccine", May 28, 2006, accessed April 24, 2011.
- ↑ Curriculum Vitae, Kenneth H. Roux, Florida State University, March 25, 2013.
- ↑ hum-mogen.org, "Virus Entry Proteins Visualized", June 7, 2006, accessed April 24, 2011.
- ↑ nbcnews.com, "Scientists get inside look at viruses", June 5, 2006, accessed April 24, 2011.
