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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
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Updated: Jun 16, 2025

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YTHDF2: a key RNA reader and antitumor target.

Sai Xiao1, Songqi Duan1, Michael A Caligiuri2

  • 1Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Los Angeles, CA 91010, USA; Hematologic Malignancies Research Institute, City of Hope National Medical Center, Los Angeles, CA 91010, USA.

Trends in Immunology
|May 21, 2025
PubMed
Summary
This summary is machine-generated.

YTHDF2, an m6A reader, plays dual roles in cancer immunity by regulating both suppressive and cytotoxic immune cells. Targeting YTHDF2 offers a complex but promising strategy for cancer immunotherapy.

Keywords:
RNA metabolismYTHDF2immunotherapym(5)Cm(6)Atumor immunologytumor microenvironment

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Area of Science:

  • Molecular Biology
  • Immunology
  • Cancer Research

Background:

  • N6-methyladenosine (m6A) is a crucial epitranscriptomic modification impacting mRNA fate.
  • YTHDF2 is a key m6A reader protein with known roles in mRNA decay and translation.
  • YTHDF2 influences various immune cell types and tumor immune evasion.

Purpose of the Study:

  • To review the multifaceted roles of YTHDF2 in cancer immunity.
  • To elucidate the mechanisms by which YTHDF2 regulates immune cells and tumor immune evasion.
  • To highlight YTHDF2 as a therapeutic target in cancer treatment.

Main Methods:

  • Literature review of studies on YTHDF2 function in cancer and immunity.
  • Analysis of YTHDF2's impact on different immune cell populations (TAMs, MDSCs, Tregs, NK, CD8+ T cells).
  • Examination of YTHDF2's role in tumor-intrinsic regulation and immune evasion.

Main Results:

  • YTHDF2 supports immune suppressive cells (TAMs, MDSCs, Tregs) while also promoting cytotoxic immune cells (NK, CD8+ T cells).
  • YTHDF2 acts as a tumor-intrinsic factor that orchestrates tumor immune evasion.
  • The dual role of YTHDF2 presents both opportunities and challenges for therapeutic targeting.

Conclusions:

  • YTHDF2 has complex and context-dependent roles in cancer immunity.
  • Targeting YTHDF2 is a promising therapeutic strategy for enhancing anti-tumor immunity.
  • Further research is needed to fully understand and exploit YTHDF2's therapeutic potential in cancer.