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Updated: Jun 6, 2025

Transplantation of Human Induced Pluripotent Stem Cell-Derived Microglia in Immunocompetent Mice Brain via Non-Invasive Transnasal Route
Published on: May 31, 2022
TGF-β Signaling in Microglia: A Key Regulator of Development, Homeostasis and Reactivity
Lulin Li1, Bryan Sun1, Odette A Harris2,3
1Palo Alto Veterans Institute for Research, VA Palo Alto Health Care System, Palo Alto, CA 94304, USA.
Abstract:
Microglia, the resident immune cells of the central nervous system (CNS), are crucial for normal brain development and function. They become reactive in response to brain injury and disease, a process known as microglial reactivity. This reactivity, along with microglial homeostasis, is tightly regulated by the local microenvironment and interactions with surrounding cells. The TGF-β signaling pathway plays an essential role in this regulation. Recent genetic studies employing microglia-specific manipulation of the TGF-β signaling pathway have shed light on its significance in microglial development, homeostasis and reactivity. This review provides an updated overview of how TGF-β signaling modulates microglial function and reactivity, contributing to our understanding of microglial biology in health and disease.
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