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Reconstruct Human Retinoblastoma In Vitro
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Reconstruct Human Retinoblastoma In Vitro

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A novel MYCN-YTHDF1 cascade contributes to retinoblastoma tumor growth by eliciting m6A -dependent activation of

Yingxiu Luo1,2, Mengjia He1,2, Jie Yang1,2

  • 1Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.

Science China. Life Sciences
|March 23, 2023
PubMed

Insights

MYCN activation drives retinoblastoma progression by upregulating YTHDF1, an m6A reader protein. This promotes cancer cell growth through enhanced oncogene expression, revealing a new therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Epigenetics

Background:

  • Retinoblastoma is the most common childhood intraocular tumor, with MYCN activation defining a high-risk subtype.
  • The precise role of MYCN in retinoblastoma progression remains unclear.

Purpose of the Study:

  • To elucidate the mechanism by which MYCN contributes to retinoblastoma pathogenesis.
  • To investigate the role of N6-methyladenosine (m6A) RNA modification in MYCN-driven retinoblastoma.

Main Methods:

  • Analysis of MYCN and YTHDF1 expression in retinoblastoma.
  • Investigation of YTHDF1's function in retinoblastoma cell proliferation and tumor growth.
  • Assessment of m6A binding-dependent mechanisms.

Main Results:

  • MYCN was found to upregulate YTHDF1, a key reader protein in m6A RNA modification.
  • YTHDF1 promotes retinoblastoma cell proliferation and tumor growth in an m6A binding-dependent manner.
  • YTHDF1 enhances oncogene expression by increasing mRNA stability and translation.

Conclusions:

  • A novel MYCN-YTHDF1 regulatory cascade controls retinoblastoma cell proliferation and tumor growth.
  • This pathway offers a new understanding of MYCN's role in retinoblastoma and presents a potential therapeutic target.
Keywords:
CDK5R1MYCNYTHDF1m6Aretinoblastoma

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