alexa Asymmetric T lymphocyte division in the initiation of adaptive immune responses.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Chang JT, Palanivel VR, Kinjyo I, Schambach F, Intlekofer AM,

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Abstract A hallmark of mammalian immunity is the heterogeneity of cell fate that exists among pathogen-experienced lymphocytes. We show that a dividing T lymphocyte initially responding to a microbe exhibits unequal partitioning of proteins that mediate signaling, cell fate specification, and asymmetric cell division. Asymmetric segregation of determinants appears to be coordinated by prolonged interaction between the T cell and its antigen-presenting cell before division. Additionally, the first two daughter T cells displayed phenotypic and functional indicators of being differentially fated toward effector and memory lineages. These results suggest a mechanism by which a single lymphocyte can apportion diverse cell fates necessary for adaptive immunity. This article was published in Science and referenced in Journal of Clinical & Cellular Immunology

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