""This can be very important for their functional adaptation. They change their way of dealing with the virus and, at same time, they don't want to cause trouble when they're inside of vital organs so they downregulate their effector programs.""
"The transcription factor Krüppel-like factor 2 (KLF2) promotes the expression and chromatin accessibility of T-cell migratory genes while Krüppel-like factor 3 (KLF3) limits these migratory programs."
Scientists discovered that transcription factors KLF2 and KLF3 form a regulatory circuit controlling CD8+ T-cell exhaustion and migration during viral infections. CD8+ T-cells, essential for targeting infected and cancerous cells, can become exhausted, leading to differentiation into migratory or terminally exhausted states. This differentiation helps T-cells adapt functionally, balancing virus management and tissue protection. The study utilized computational biology and single-cell multi-omics to analyze T-cells from mouse models, revealing KLF2 enhances migratory gene expression while KLF3 restricts these programs.
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