Mutant Ras and inflammation-driven skin tumorigenesis is suppressed via a JNK-iASPP-AP1 axis.
Animals
Mice
Cell Transformation, Neoplastic
/ genetics
Inflammation
/ genetics
Intracellular Signaling Peptides and Proteins
/ genetics
Repressor Proteins
/ metabolism
Tumor Microenvironment
Tumor Suppressor Protein p53
/ genetics
MAP Kinase Kinase 4
/ metabolism
Transcription Factor AP-1
/ metabolism
AP1/JNK
CP: Cancer
RAS
iASPP
inflammation-driven tumorigenesis
p63
skin cancer
target selective transcription
Journal
Cell reports
ISSN: 2211-1247
Titre abrégé: Cell Rep
Pays: United States
ID NLM: 101573691
Informations de publication
Date de publication:
18 10 2022
18 10 2022
Historique:
received:
26
12
2021
revised:
29
06
2022
accepted:
22
09
2022
entrez:
19
10
2022
pubmed:
20
10
2022
medline:
22
10
2022
Statut:
ppublish
Résumé
Concurrent mutation of a RAS oncogene and the tumor suppressor p53 is common in tumorigenesis, and inflammation can promote RAS-driven tumorigenesis without the need to mutate p53. Here, we show, using a well-established mutant RAS and an inflammation-driven mouse skin tumor model, that loss of the p53 inhibitor iASPP facilitates tumorigenesis. Specifically, iASPP regulates expression of a subset of p63 and AP1 targets, including genes involved in skin differentiation and inflammation, suggesting that loss of iASPP in keratinocytes supports a tumor-promoting inflammatory microenvironment. Mechanistically, JNK-mediated phosphorylation regulates iASPP function and inhibits iASPP binding with AP1 components, such as JUND, via PXXP/SH3 domain-mediated interaction. Our results uncover a JNK-iASPP-AP1 regulatory axis that is crucial for tissue homeostasis. We show that iASPP is a tumor suppressor and an AP1 coregulator.
Identifiants
pubmed: 36261000
pii: S2211-1247(22)01353-5
doi: 10.1016/j.celrep.2022.111503
pmc: PMC9597577
pii:
doi:
Substances chimiques
Intracellular Signaling Peptides and Proteins
0
Repressor Proteins
0
Tumor Suppressor Protein p53
0
MAP Kinase Kinase 4
EC 2.7.12.2
Transcription Factor AP-1
0
Ppp1r13l protein, mouse
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
111503Subventions
Organisme : Wellcome Trust
ID : 210641/Z/18/Z
Pays : United Kingdom
Organisme : Department of Health
Pays : United Kingdom
Informations de copyright
Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests X.L. is a scientific advisory board member of Oxford SimCell. T.M.C. is a founder, employee, and shareholder of a diagnostics company (Cleancard).
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