Related Experiment Video
Updated: Dec 23, 2025

Identifying PD-1/PD-L1 Inhibitors with Surface Plasmon Resonance Technology
Published on: May 2, 2025
Programmed cell death protein 1 (PD-1) in infection
Steffen Leth1, Søren Jensen-Fangel1
1Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark.
Abstract:
Exhausted and dysfunctional T cells triggered by infection and cancer render the immune system unable to eliminate these pathogens. Pharmacologic blockade of the surface receptors that inhibit T-cell function has shown remarkable success in patients with various malignancies. In this Review, we discuss the emerging evidence of inhibiting checkpoint pathways as a potential role in controlling or clearing infectious diseases. Though interesting tendencies, much work is still needed in order to develop safe strategies that can be translated into clinically relevant outcomes in patients with infections.
Insights
Inhibiting immune checkpoint pathways can help fight infections, similar to cancer treatment. Further research is needed to develop safe and effective strategies for patients with infectious diseases.
Area of Science:
- Immunology
- Oncology
- Infectious Diseases
Background:
- T cell exhaustion and dysfunction impair the immune response against infections and cancer.
- Blocking inhibitory immune checkpoints has proven effective in treating various cancers.
Purpose of the Study:
- To review the potential of inhibiting immune checkpoint pathways for controlling or clearing infectious diseases.
- To highlight the need for further research in translating these strategies for clinical use in infections.
Main Methods:
- Review of emerging evidence on immune checkpoint inhibition in infectious diseases.
- Analysis of current research trends and clinical relevance.
Main Results:
- Immune checkpoint inhibition shows promise in preclinical and some clinical studies for infectious diseases.
- Significant challenges remain in optimizing safety and efficacy for clinical application.
Conclusions:
- Inhibiting immune checkpoint pathways is a potential therapeutic strategy for infectious diseases.
- Development of safe and clinically translatable strategies requires substantial further investigation.
Related Concept Videos
Cells of the Innate Immune Response
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
The Intrinsic Apoptotic Pathway
Abnormal Proliferation
The Extrinsic Apoptotic Pathway
Overview of Cell Death
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
Cell-mediated Immune Responses

