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Updated: Aug 20, 2025

Dual CRISPR-Interference Strategy for Targeting Synthetic Lethal Interactions Between Non-Coding RNAs in Cancer Cells
Published on: May 30, 2025
Interplay between programmed death-ligand 1 and non-coding RNAs
Soudeh Ghafouri-Fard1, Hamed Shoorei2,3, Bashdar Mahmud Hussen4,5
1Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abstract:
Programmed death-ligand 1 (PD-L1) is a transmembrane protein with essential roles in the suppression of adaptive immune responses. As an immune checkpoint molecule, PD-L1 can be exploited by cancer cells to evade the anti-tumor attacks initiated by the immune system. Thus, blockade of the PD1/PD-L1 axis can eliminate the suppressive signals and release the antitumor immune responses. Identification of the underlying mechanisms of modulation of the activity of the PD1/PD-L1 axis would facilitate the design of more efficacious therapeutic options and better assignment of patients for each option. Recent studies have confirmed the interactions between miRNAs/lncRNAs/circ-RNAs and the PD1/PD-L1 axis. In the current review, we give a summary of interactions between these transcripts and PD-L1 in the context of cancer. We also overview the consequences of these interactions in the determination of the response of patients to anti-cancer drugs.
Insights
Programmed death-ligand 1 (PD-L1) is key in immune suppression by cancer. Understanding its regulation by non-coding RNAs like miRNAs, lncRNAs, and circRNAs can improve cancer therapies and patient treatment selection.
Area of Science:
- Immunology
- Molecular Biology
- Oncology
Background:
- Programmed death-ligand 1 (PD-L1) is a transmembrane protein crucial for suppressing adaptive immune responses.
- Cancer cells exploit PD-L1 to evade immune system attacks, making it a target for cancer therapies.
- Modulating the PD1/PD-L1 axis is essential for releasing anti-tumor immune responses.
Purpose of the Study:
- To review the interactions between non-coding RNAs (miRNAs, lncRNAs, circRNAs) and PD-L1 in cancer.
- To summarize how these interactions influence the PD1/PD-L1 axis activity.
- To overview the impact of these interactions on patient response to anti-cancer drugs.
Main Methods:
- Literature review of recent studies on non-coding RNAs and PD-L1.
- Analysis of interactions between specific transcripts (miRNAs, lncRNAs, circRNAs) and PD-L1.
- Synthesis of findings regarding the role of these interactions in cancer immunity and drug response.
Main Results:
- Non-coding RNAs, including miRNAs, lncRNAs, and circRNAs, have confirmed interactions with PD-L1.
- These interactions play a significant role in modulating PD-L1 expression and function.
- The interplay between non-coding RNAs and PD-L1 impacts the efficacy of cancer immunotherapies.
Conclusions:
- Understanding non-coding RNA regulation of PD-L1 is vital for developing novel cancer treatments.
- Identifying these interactions can aid in predicting patient responses to PD1/PD-L1 blockade therapies.
- Further research into these mechanisms promises to enhance therapeutic strategies and patient outcomes in oncology.
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