m1A Regulated Genes Modulate PI3K/AKT/mTOR and ErbB Pathways in Gastrointestinal Cancer

Yueshui Zhao, Q. Zhao, Parham Jabbarzadeh Kaboli, Jing Shen, Mingxing Li, Xu Wu, Jianhua Yin, Hanyu Zhang, Yuanlin Wu, Ling Lin, Lingling Zhang, Lin Wan, Qinglian Wen, Xiang Li, Chi Hin Cho, Tao Yi, Jing Li*, Zhangang Xiao*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

99 Citations (Scopus)


BACKGROUND: Gene expression can be posttranscriptionally regulated by a complex network of proteins. N1-methyladenosine (m1A) is a newly validated RNA modification. However, little is known about both its influence and biogenesis in tumor development. METHODS: This study analyzed TCGA data of patients with five kinds of gastrointestinal (GI) cancers. Using data from cBioPortal, molecular features of the nine known m1A-related enzymes in GI cancers were investigated. Using a variety of bioinformatics approach, the impact of m1A regulators on its downstream signaling pathway was studied. To further confirm this regulation, the effect of m1A writer ALKBH3 knockdown was studied using RNA-seq data from published database. RESULTS: Dysregulation and multiple types of genetic alteration of putative m1A-related enzymes in tumor samples were observed. The ErbB and mTOR pathways with ErbB2, mTOR, and AKT1S1 hub genes were identified as being regulated by m1A-related enzymes. The expression of both ErbB2 and AKT1S1 was decreased after m1A writer ALKBH3 knockdown. Furthermore, Gene Ontology analysis revealed that m1A downstream genes were associated with cell proliferation, and the results showed that m1A genes are reliably linked to mTOR. CONCLUSION: This study demonstrated for the first time the dysregulation of m1A regulators in GI cancer and its signaling pathways and will contribute to the understanding of RNA modification in cancer.

Original languageEnglish
Pages (from-to)1323-1333
Number of pages11
JournalTranslational Oncology
Issue number10
Early online date25 Jul 2019
Publication statusPublished - Oct 2019

Scopus Subject Areas

  • Oncology
  • Cancer Research


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