Anti-tumour immunity controlled through mRNA m6A methylation and YTHDF1 in dendritic cells
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View abstract on PubMed
Summary
This summary is machine-generated.Messenger RNA (mRNA) N<sup>6</sup>-methyadenosine (m<sup>6</sup>A) methylation, regulated by YTHDF1, controls durable anti-tumour immunity. YTHDF1 deficiency boosts CD8<sup>+</sup> T cell responses and enhances immunotherapy efficacy.
Area Of Science
- Immunology
- Molecular Biology
- Cancer Research
Background
- Tumour neoantigens are crucial for anti-tumour immunity and immunotherapy response.
- Despite neoantigen presence, complete tumour elimination is often limited by insufficient immune responses.
Purpose Of The Study
- To investigate the role of mRNA N<sup>6</sup>-methyadenosine (m<sup>6</sup>A) methylation and YTHDF1 in regulating anti-tumour immunity.
- To explore YTHDF1's impact on neoantigen presentation and T cell responses.
Main Methods
- Comparative analysis of Ythdf1-deficient and wild-type mice.
- Assessment of CD8+ T cell responses and tumour antigen cross-presentation in dendritic cells.
- Investigation of YTHDF1's mechanism involving m<sup>6</sup>A-marked transcripts and lysosomal cathepsins.
Main Results
- Ythdf1-deficient mice exhibited enhanced antigen-specific CD8+ T cell anti-tumour responses.
- Loss of YTHDF1 in dendritic cells improved tumour antigen cross-presentation and T cell cross-priming.
- YTHDF1 binds m<sup>6</sup>A-marked transcripts, increasing cathepsin translation and inhibiting antigen cross-presentation.
Conclusions
- YTHDF1 regulates durable neoantigen-specific immunity via m<sup>6</sup>A methylation.
- Targeting YTHDF1 enhances anti-tumour CD8+ T cell responses and PD-L1 immunotherapy efficacy.
- YTHDF1 represents a potential therapeutic target for improving cancer immunotherapy.
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