title: A brief history of CD8 T cells.
abstract: CD8 T cells comprise a powerful branch of the adaptive immune system, yet were not formally recognized until long after the discovery of antibody. CD8 T cells contribute to the eradication of intracellular infections and to the control of many chronic infections. There is tempered optimism that CD8 T cell memory elicited via vaccination may hold the key to manufacturing protective immunity against pathogens that cause chronic infections in humans. The specificity and destructive capabilities of CD8 T cells may also be harnessed for the eradication of tumors. However, CD8 T cells also contribute to a variety of clinical difficulties such as immune mediated pathology, rejection of organ transplants, and autoimmunity. Clearly, learning how to safely generate protective long-lived CD8 T cell memory and how to control or eliminate specific unwanted responses could deliver substantial clinical rewards, and there is a great need for continued research on the biology and therapeutic potential of these cells. Herein, we recount the historical developments leading to the discovery of CD8 T cells, highlight a few of the important discoveries that have followed, and discuss some of the critical issues on the horizon.
authors.affiliation: Department of Microbiology, University of Minnesota, Minneapolis, MN, USA.
authors.forename: David
authors.initials: D
authors.lastname: Masopust
authors.forename: Vaiva
authors.initials: V
authors.lastname: Vezys
authors.forename: E John
authors.initials: EJ
authors.lastname: Wherry
authors.forename: Rafi
authors.initials: R
authors.lastname: Ahmed
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans