How does HIV, armed with only nine genes, manage to hijack the immune system so effectively? For decades, researchers have known that the virus depends on human proteins to enter, replicate, and persist—yet the full roster of those host factors has remained elusive. One major reason: most HIV studies have relied on immortalized cell lines rather than the primary CD4+ T cells the virus actually infects in the body. As a result, scientists have lacked a comprehensive picture of how real human T cells respond when HIV attacks. A new study from Gladstone Institutes and the University of California, San Francisco (UCSF), changes that. In the study, titled “Systematic Discovery of Pro- and Anti-HIV Host Factors in Primary Human CD4+ T Cells” and published in Cell, researchers report the first genome‑wide map of human genes that either promote or restrict HIV infection in primary human CD4+ T cells, offering a long‑sought blueprint of the host–virus interface. “HIV has been a global crisis for over 40 years,” said Alex Marson, MD, PhD, director of the Gladstone‑UCSF Institute of Genomic Immunology and senior author of the study. “By studying human T cells, which are the primary target of the virus, we’ve finally mapped the genes—many of which were previously unknown—that influence whether or not they can be infected by HIV.” Scientists in the Marson Lab at Gladstone Institutes have opened a new door to understanding HIV by creating the first genetic roadmap of how the virus interacts with real human cells. [Gladstone…
