2. Academic Validation
  3. N6-methyladenosine reader YTHDF2 promotes multiple myeloma cell proliferation through EGR1/p21cip1/waf1/CDK2-Cyclin E1 axis-mediated cell cycle transition

N6-methyladenosine reader YTHDF2 promotes multiple myeloma cell proliferation through EGR1/p21cip1/waf1/CDK2-Cyclin E1 axis-mediated cell cycle transition

  • Oncogene. 2023 Apr 3. doi: 10.1038/s41388-023-02675-w.
Rui Liu 1,  Jiyu Miao 1,  Yachun Jia 1,  Guangyao Kong 1 2 3,  Fei Hong 1,  Fangmei Li 1,  Meng Zhai 1,  Ru Zhang 1,  Jiaxi Liu 1,  Xuezhu Xu 1,  Ting Wang 1,  Hui Liu 1,  Jinsong Hu 4,  Yun Yang 5,  Aili He 6 7 8
Affiliations

Affiliations

  • 1 Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157, 5th West Road, 710004, Xi'an, Shaanxi, China.
  • 2 National-Local Joint Engineering Research Center of Biodiagnostics & Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China.
  • 3 Department of Tumor and Immunology in precision medical institute, Xi'an Jiaotong University, Xi'an, China.
  • 4 Department of Cell Biology and Genetics, The Institute of Infection and Immunity, Xi'an Jiaotong University Health Science Center, Xi'an, China. jinsong.hu@xjtu.edu.cn.
  • 5 Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157, 5th West Road, 710004, Xi'an, Shaanxi, China. yangyun108@163.com.
  • 6 Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, 157, 5th West Road, 710004, Xi'an, Shaanxi, China. heaili@xjtu.edu.cn.
  • 7 National-Local Joint Engineering Research Center of Biodiagnostics & Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China. heaili@xjtu.edu.cn.
  • 8 Department of Tumor and Immunology in precision medical institute, Xi'an Jiaotong University, Xi'an, China. heaili@xjtu.edu.cn.
PMID: 37012388 DOI: 10.1038/s41388-023-02675-w
Abstract

Multiple myeloma (MM) is the second most common hematological malignancy. N6-methyladenosine (m6A) is the most abundant RNA modification. YTH domain-containing family protein 2 (YTHDF2) recognizes m6A-cotaining RNAs and accelerates degradation to regulate Cancer progression. However, the role of YTHDF2 in MM remains unclear. We investigated the expression levels and prognostic role of YTHDF2 in MM, and studied the effect of YTHDF2 on MM proliferation and cell cycle. The results showed that YTHDF2 was highly expressed in MM and was an independent prognostic factor for MM survival. Silencing YTHDF2 suppressed cell proliferation and caused the G1/S phase cell cycle arrest. RNA immunoprecipitation (RIP) and m6A-RIP (MeRIP) revealed that YTHDF2 accelerated EGR1 mRNA degradation in an m6A-dependent manner. Moreover, overexpression of YTHDF2 promoted MM growth via the m6A-dependent degradation of EGR1 both in vitro and in vivo. Furthermore, EGR1 suppressed cell proliferation and retarded cell cycle by activating p21cip1/waf1 transcription and inhibiting CDK2-cyclinE1. EGR1 knockdown could reverse the inhibited proliferation and cell cycle arrest upon YTHDF2 knockdown. In conclusion, the high expression of YTHDF2 promoted MM cell proliferation via EGR1/p21cip1/waf1/CDK2-cyclin E1 axis-mediated cell cycle transition, highlighting the potential of YTHDF2 as an effective prognostic biomarker and a promising therapeutic target for MM.

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