Mark K. Louder

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About

Dr. Mark K. Louder is a leading virologist whose work has fundamentally advanced the fight against HIV/AIDS. His primary research focuses on the development and optimization of high-throughput assays to evaluate neutralizing antibody responses against HIV-1. Dr. Louder’s most notable contribution is the creation of a high-throughput HIV-1 microneutralization assay, a pivotal tool that enables the rapid, large-scale screening of antibodies targeting the HIV-1 Envelope glycoprotein. This assay, which measures viral neutralization in a cell line expressing luciferase upon infection, has become a cornerstone in the field, cited over 20 times and widely adopted for assessing vaccine candidates and therapeutic antibodies. By streamlining the evaluation of antibody potency and breadth, Dr. Louder’s work has accelerated the discovery of broadly neutralizing antibodies and informed the design of effective immunogens. His technical innovations have empowered researchers worldwide to conduct more efficient and reproducible neutralization studies, making him a key figure in the global effort to develop an HIV vaccine.