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Related Concept Videos

T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

714
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
714

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Updated: Jun 27, 2025

Isolation of Uterine Innate Lymphoid Cells for Analysis by Flow Cytometry
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CD4+T and CD8+T Cells in Uterus Exhibit Both Selective Dysfunction and Residency Signatures.

Shuangpeng Kang1, Shuiping Jin2, Xueying Mao2

  • 1Hunan Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations, The Hunan Provincial University Key Laboratory of the Fundamental and Clinical Research on Functional Nucleic Acid, Changsha Medical University, Changsha, China.

Journal of Immunology Research
|May 1, 2024
PubMed
Summary

Uterine CD4+ and CD8+ T cells are unique tissue-resident memory cells. These cells balance immune defense with fetal tolerance, exhibiting a mixed signature of activation and effector function.

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Author Spotlight: Multiplex Immunohistochemistry for Understanding Immune Regulation by Uterine NK Cells in Pregnancy
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Area of Science:

  • Immunology
  • Reproductive immunology
  • T cell biology

Background:

  • Uterine T cells must balance pathogen defense with fetal tolerance.
  • Previous studies focused on gamma-delta T cells, leaving alpha-beta T cell properties less understood.
  • Comprehensive characterization of uterine alpha-beta T cells is needed.

Purpose of the Study:

  • To compare immunological properties of alpha-beta T cells in the uterus versus blood.
  • To elucidate the unique characteristics of uterine CD4+ and CD8+ T cells.
  • To investigate similarities and differences between human and murine uterine T cell phenotypes.

Main Methods:

  • Comparative analysis of alpha-beta T cells (CD4+ and CD8+) in mouse and human uterine and blood samples.
  • Assessment of tissue residency markers (CD69, CD103).
  • Evaluation of inhibitory molecules (PD-1), cytokines (IFN-γ, IL-17), and transcription factors (pSTAT3).

Main Results:

  • Most uterine CD4+ and CD8+ T cells are tissue-resident memory cells expressing CD69 and/or CD103.
  • Uterine T cells highly express PD-1 and IFN-γ.
  • Uterine CD4+ T cells express IL-17, modulated by pSTAT3, and exhibit a mixed signature of dysfunction, activation, and effector function.

Conclusions:

  • Uterine CD4+ and CD8+ T cells possess unique immunological properties distinct from blood counterparts.
  • These cells display a mixed phenotype enabling simultaneous immune defense and maternal-fetal tolerance.
  • Findings provide a foundation for further research into uterine T cell functions in pregnancy.