Related Experiment Video

Updated: Jun 3, 2025

Multiplexed Immunofluorescence Analysis and Quantification of Intratumoral PD-1+ Tim-3+ CD8+ T Cells
09:32

Multiplexed Immunofluorescence Analysis and Quantification of Intratumoral PD-1+ Tim-3+ CD8+ T Cells

Published on: February 8, 2018

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Progress in understanding the regulatory mechanisms of immune checkpoint proteins PD-1 and PD-L1 expression

Xuanxuan Wu1, Zengjun Zhu1, Jian Zhang2

  • 1School of Medical Laboratory, Shandong Second Medical University, Weifang, 261053, Shandong, China.

Clinical & Translational Oncology : Official Publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico
|January 8, 2025
PubMed

Insights

Programmed Death Protein-1 (PD-1) and its ligand PD-L1 are key regulators of T-cell responses. Understanding their expression mechanisms is crucial for developing effective cancer immunotherapies.

Area of Science:

  • Immunology
  • Oncology
  • Molecular Biology

Background:

  • Programmed Death Protein-1 (PD-1) is a T-cell receptor crucial for immune regulation.
  • PD-1/PD-L1 pathway binding inhibits anti-tumor immunity by suppressing T-cell activation.
  • This pathway is vital for immune tolerance in the tumor microenvironment.

Purpose of the Study:

  • To review mechanisms governing PD-1/PD-L1 expression.
  • To explore novel strategies for tumor immunotherapy targeting the PD-1/PD-L1 pathway.

Main Methods:

  • Review of transcriptional regulation of PD-1/PD-L1.
  • Analysis of post-transcriptional (mRNA processing) regulation.
  • Examination of post-translational (protein modification) regulation.
  • Overview of current immunotherapies targeting PD-1/PD-L1.

Main Results:

  • PD-1/PD-L1 expression is regulated at multiple molecular levels.
  • Dysregulation of this pathway contributes to immune evasion in tumors.
  • Targeting PD-1/PD-L1 is a promising avenue for cancer treatment.

Conclusions:

  • Comprehensive understanding of PD-1/PD-L1 regulation is essential for advancing cancer immunotherapy.
  • Novel therapeutic strategies can be developed by modulating PD-1/PD-L1 expression and function.
Keywords:
PD-L1PD1Post-translational modificationsTranscriptional regulation

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