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Tuft Cells: Context- and Tissue-Specific Programming for a Conserved Cell Lineage.

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  • 1Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California, San Francisco, California, USA.

Annual Review of Pathology
|November 9, 2022
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Summary
This summary is machine-generated.

Tuft cells, crucial immune sentinels, orchestrate responses to pathogens and aid tissue repair. Their development and diverse functions are shaped by specific tissue cues, leading to varied mature cell phenotypes.

Keywords:
IL-25acetylcholinecysteinyl leukotrienemucociliary clearancetuft celltype 2 immunitytype II taste transduction

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Area of Science:

  • * Cell Biology
  • * Immunology
  • * Gastroenterology

Background:

  • * Tuft cells are specialized epithelial cells found across various tissues with unique stem cell niches and environmental exposures.
  • * Despite diverse locations, tuft cells share a common transcriptional profile, notably including taste signaling pathways.
  • * These cells play critical roles in immune surveillance and tissue homeostasis.

Purpose of the Study:

  • * To review the functions of tuft cells, including their roles in initiating type 2 immune responses, antimicrobial defense, and tissue repair.
  • * To summarize the developmental pathways of tuft cells from epithelial progenitors under both normal and disease conditions.
  • * To explore the concept of nascent tuft cells and how tissue-specific signals influence their differentiation into diverse mature phenotypes.

Main Methods:

  • * Comprehensive literature review of seminal and recent research on tuft cell biology.
  • * Analysis of transcriptional programs and signaling pathways associated with tuft cell function.
  • * Synthesis of data on tuft cell development, function, and phenotypic heterogeneity.

Main Results:

  • * Tuft cells instigate type 2 cytokine responses and orchestrate antimicrobial defenses.
  • * Emerging evidence highlights significant roles for tuft cells in tissue repair mechanisms.
  • * Tuft cell development is influenced by epithelial progenitors, with context-dependent differentiation pathways.
  • * Nascent tuft cells exhibit plasticity, with tissue-specific cues driving distinct effector programs and resulting in phenotypic heterogeneity.

Conclusions:

  • * Tuft cells are versatile immune mediators and tissue regulators with context-dependent functions.
  • * Understanding tuft cell plasticity is key to elucidating their roles in health and disease.
  • * Further research into tuft cell heterogeneity may reveal novel therapeutic targets for immune and regenerative medicine.