Persistent DNA strand breaks induce a CAF-like phenotype in normal fibroblasts.
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ICR Authors
Authors
Legrand, AJ
Poletto, M
Pankova, D
Clementi, E
Moore, J
Castro-Giner, F
Ryan, AJ
O'Neill, E
Markkanen, E
Dianov, GL
Poletto, M
Pankova, D
Clementi, E
Moore, J
Castro-Giner, F
Ryan, AJ
O'Neill, E
Markkanen, E
Dianov, GL
Document Type
Journal Article
Date
2018-03-02
Date Accepted
2018-01-30
Abstract
Cancer-associated fibroblasts (CAFs) are an emerging target for cancer therapy as they promote tumour growth and metastatic potential. However, CAF targeting is complicated by the lack of knowledge-based strategies aiming to selectively eliminate these cells. There is a growing body of evidence suggesting that a pro-inflammatory microenvironment (e.g. ROS and cytokines) promotes CAF formation during tumorigenesis, although the exact mechanisms involved remain unclear. In this study, we reveal that a prolonged pro-inflammatory stimulation causes a de facto deficiency in base excision repair, generating unrepaired DNA strand breaks and thereby triggering an ATF4-dependent reprogramming of normal fibroblasts into CAF-like cells. Based on the phenotype of in vitro-generated CAFs, we demonstrate that midostaurin, a clinically relevant compound, selectively eliminates CAF-like cells deficient in base excision repair and prevents their stimulatory role in cancer cell growth and migration.
Citation
Oncotarget, 2018, 9 (17), pp. 13666 - 13681
Source Title
Publisher
Impact Journals, LLC
ISSN
1949-2553
eISSN
1949-2553
Collections
Research Team
Cell Death and Immunity