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·인용수 8
·2024
Exploring Memory Function Beyond Immune Cells: ANGPTL4‐Mediated Memory Functions in Tissue Resident Stem Cells
Sera Park, Eun-Kyung Min, Soo‐Rim Kim, Suk‐Kyung Kim, Kunhee Na, Chan Hum Park, YunJae Jung, Byung‐Chul Oh, In‐Sun Hong
IF 14.1Advanced Science
초록

Adapted immune cells are known to develop memory functions that increase resistance to subsequent infections after initial pathogen exposure, however, it is unclear whether non-immune cells, like tissue-resident stem cells, have similar memory functions. Here, it is found that tissue-resident stem cells crucial for tissue regeneration show diminished adverse effects on diverse stem cell functions against successive exposure to foreign antigen (β-glucan) to maintain tissue homeostasis and stability both in vitro and in vivo. These data suggest that endometrial stem cells may possess a robust memory function, in contrast, fully differentiated cells like fibroblasts and vesicular cells do not show these memory mechanisms upon consecutive antigen exposure. Moreover, the pivotal role of Angiopoietin-like 4 (ANGPTL4) in regulating the memory functions of endometrial stem cells is identified through specific shRNA knockdown in vitro and knockout mice in vivo experiments. ANGPTL4 is associated with the alteration of diverse stem cell functions and epigenetic modifications, notably through histone H3 methylation changes and two pathways (i.e., PI3K/Akt and FAK/ERK1/2 signaling) upon consecutive antigen exposure. These findings imply the existence of inherent self-defense mechanisms through which local stem cells can adapt and protect themselves from recurrent antigenic challenges, ultimately mitigating adverse consequences.

키워드
Stem cellCell biologyBiologyImmune systemAdult stem cellAntigenCancer researchImmunologyEndothelial stem cellIn vitro
타입
article
IF / 인용수
14.1 / 8
게재 연도
2024

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