A LATS2 and ALKBH5 positive feedback loop supports their oncogenic roles

Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved..

N(6)-methyladenosine (m6A) critically regulates RNA dynamics in various biological processes. The m6A demethylase ALKBH5 promotes tumorigenesis of glioblastoma, while the intricate web that orchestrates its regulation remains enigmatic. Here, we discover that cell density affects ALKBH5 subcellular localization and m6A dynamics. Mechanistically, ALKBH5 is phosphorylated by the large tumor suppressor kinase 2 (LATS2), preventing its nuclear export and enhancing protein stability. Furthermore, phosphorylated ALKBH5 reciprocally erases m6A from LATS2 mRNA, thereby stabilizing this transcript. Unexpectedly, LATS2 depletion suppresses glioblastoma stem cell self-renewal independent of yes-associated protein activation. Additionally, deficiency in either LATS2 or ALKBH5 phosphorylation impedes tumor progression in mouse xenograft models. Moreover, high levels of LATS2 expression and ALKBH5 phosphorylation are associated with tumor malignancy in patients with gliomas. Collectively, our study unveils an oncogenic positive feedback loop between LATS2 and ALKBH5, revealing a non-canonical branch of the Hippo pathway for RNA processing and suggesting potential anti-cancer interventions.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:43

Enthalten in:

Cell reports - 43(2024), 4 vom: 23. Apr., Seite 114032

Sprache:

Englisch

Beteiligte Personen:

Cao, Lei [VerfasserIn]
Han, Ruohui [VerfasserIn]
Zhao, Yingying [VerfasserIn]
Qin, Xiaoyang [VerfasserIn]
Li, Qian [VerfasserIn]
Xiong, Hui [VerfasserIn]
Kong, Yu [VerfasserIn]
Liu, Ziyi [VerfasserIn]
Li, Zexing [VerfasserIn]
Dong, Feng [VerfasserIn]
Li, Ting [VerfasserIn]
Zhao, Xiujuan [VerfasserIn]
Lei, Lei [VerfasserIn]
Zhao, Qian [VerfasserIn]
Liu, Dayong [VerfasserIn]
Wang, Baofeng [VerfasserIn]
Wu, Xudong [VerfasserIn]

Links:

Volltext

Themen:

ALKBH5 protein, human
Adenosine
AlkB Homolog 5, RNA Demethylase
CLE6G00625
CP: Cancer
EC 1.14.11.-
EC 2.7.1.11
EC 2.7.11.1
Journal Article
K72T3FS567
LATS2 protein, human
N-methyladenosine
Protein Serine-Threonine Kinases
RNA, Messenger
Research Support, Non-U.S. Gov't
Tumor Suppressor Proteins

Anmerkungen:

Date Completed 26.04.2024

Date Revised 27.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.celrep.2024.114032

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370582330