Journal
FRONTIERS IN IMMUNOLOGY
Volume 13, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fimmu.2022.1050188
Keywords
parenchymal cells; tissue-resident macrophages; cellular crosstalk; tissue-specific function; mammalian; tissue homeostasis
Categories
Funding
- National Natural Science Foundation of China
- [31900632]
- [31900666]
- [82225009]
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Non-parenchymal cells (NPCs) and parenchymal cells (PCs) perform tissue-specific functions together. Tissue-resident macrophages (TRMs), a vital type of NPCs, interact with PCs and regulate their functions. The interaction between PCs and TRMs is critical for maintaining tissue homeostasis and physiological functions.
Non-parenchymal cells (NPCs) and parenchymal cells (PCs) collectively perform tissue-specific functions. PCs play significant roles and continuously adjust the intrinsic functions and metabolism of organs. Tissue-resident macrophages (TRMs) are crucial members of native NPCs in tissues and are essential for immune defense, tissue repair and development, and homeostasis maintenance. As a plastic-phenotypic and prevalent cluster of NPCs, TRMs dynamically assist PCs in functioning by producing cytokines, inflammatory and anti-inflammatory signals, growth factors, and proteolytic enzymes. Furthermore, the PCs of tissues modulate the functional activity and polarization of TRMs. Dysregulation of the PC-TRM crosstalk axis profoundly impacts many essential physiological functions, including synaptogenesis, gastrointestinal motility and secretion, cardiac pulsation, gas exchange, blood filtration, and metabolic homeostasis. This review focuses on the PC-TRM crosstalk in mammalian vital tissues, along with their interactions with tissue homeostasis maintenance and disorders. Thus, this review highlights the fundamental biological significance of the regulatory network of PC-TRM in tissue homeostasis.
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