Abstract:
BACKGROUND:N6-methyladenosine (m6A) emerges as one of the most important modification of RNA. Bladder cancer is a common cancer type in developed countries, and hundreds of thousands of bladder cancer patients die every year. MATERIALS AND METHODS:There are various cells in bladder tumor bulk, and a small population cells defined as tumor initiating cells (TIC) have self-renewal and differentiation capacities. Bladder TICs drive bladder tumorigenesis and metastasis, and their activities are fine regulated. However, the role of N6-methyladenosine in bladder TIC self-renewal is unknown. RESULTS:Here, we found a decrease of N6-methyladenosine in bladder tumors and bladder TICs. N6-methyladenosine levels are related to clinical severity and outcome. Mettl14 is lowly expressed in bladder cancer and bladder TICs. Mettl14 knockout promotes the proliferation, self-renewal, metastasis and tumor initiating capacity of bladder TICs, and Mettl14 overexpression exerts an opposite role. Mettl14 and m6A modification participate in the RNA stability of Notch1 mRNA. Notch1 m6A modification inhibits its RNA stability. Notch1 plays an essential role in bladder tumorigenesis and bladder TIC self-renewal. CONCLUSION:This work reveals a novel role of Mettl14 and N6-methyladenosine in bladder tumorigenesis and bladder TICs, adding new layers for bladder TIC regulation and N6-methyladenosine function.
journal_name
Mol Cancerjournal_title
Molecular cancerauthors
Gu C,Wang Z,Zhou N,Li G,Kou Y,Luo Y,Wang Y,Yang J,Tian Fdoi
10.1186/s12943-019-1084-1subject
Has Abstractpub_date
2019-11-25 00:00:00pages
168issue
1issn
1476-4598pii
10.1186/s12943-019-1084-1journal_volume
18pub_type
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