The Balance of Stromal BMP Signaling Mediated by GREM1 and ISLR Drives Colorectal Carcinogenesis.
Adult
Aged
Aged, 80 and over
Animals
Bone Morphogenetic Proteins
/ metabolism
Cancer-Associated Fibroblasts
/ metabolism
Carcinogenesis
/ pathology
Cell Differentiation
Cell Line, Tumor
Colorectal Neoplasms
/ mortality
Disease Progression
Female
Hepatocytes
/ metabolism
Humans
Immunoglobulins
/ genetics
Intercellular Signaling Peptides and Proteins
/ metabolism
Kaplan-Meier Estimate
Liver Neoplasms
/ secondary
Male
Mice
Middle Aged
Prognosis
Signal Transduction
Tumor Microenvironment
Up-Regulation
Xenograft Model Antitumor Assays
Bone Morphogenetic Protein
Cancer-Associated Fibroblasts
Colorectal Cancer
Tumor Microenvironment
Journal
Gastroenterology
ISSN: 1528-0012
Titre abrégé: Gastroenterology
Pays: United States
ID NLM: 0374630
Informations de publication
Date de publication:
03 2021
03 2021
Historique:
received:
23
06
2020
revised:
16
10
2020
accepted:
09
11
2020
pubmed:
17
11
2020
medline:
6
8
2021
entrez:
16
11
2020
Statut:
ppublish
Résumé
Cancer-associated fibroblasts (CAFs), key constituents of the tumor microenvironment, either promote or restrain tumor growth. Attempts to therapeutically target CAFs have been hampered by our incomplete understanding of these functionally heterogeneous cells. Key growth factors in the intestinal epithelial niche, bone morphogenetic proteins (BMPs), also play a critical role in colorectal cancer (CRC) progression. However, the crucial proteins regulating stromal BMP balance and the potential application of BMP signaling to manage CRC remain largely unexplored. Using human CRC RNA expression data, we identified CAF-specific factors involved in BMP signaling, then verified and characterized their expression in the CRC stroma by in situ hybridization. CRC tumoroids and a mouse model of CRC hepatic metastasis were used to test approaches to modify BMP signaling and treat CRC. We identified Grem1 and Islr as CAF-specific genes involved in BMP signaling. Functionally, GREM1 and ISLR acted to inhibit and promote BMP signaling, respectively. Grem1 and Islr marked distinct fibroblast subpopulations and were differentially regulated by transforming growth factor β and FOXL1, providing an underlying mechanism to explain fibroblast biological dichotomy. In patients with CRC, high GREM1 and ISLR expression levels were associated with poor and favorable survival, respectively. A GREM1-neutralizing antibody or fibroblast Islr overexpression reduced CRC tumoroid growth and promoted Lgr5 Stromal BMP signaling predicts and modifies CRC progression and survival, and it can be therapeutically targeted by novel AAV-directed gene delivery to the liver.
Sections du résumé
BACKGROUND & AIMS
Cancer-associated fibroblasts (CAFs), key constituents of the tumor microenvironment, either promote or restrain tumor growth. Attempts to therapeutically target CAFs have been hampered by our incomplete understanding of these functionally heterogeneous cells. Key growth factors in the intestinal epithelial niche, bone morphogenetic proteins (BMPs), also play a critical role in colorectal cancer (CRC) progression. However, the crucial proteins regulating stromal BMP balance and the potential application of BMP signaling to manage CRC remain largely unexplored.
METHODS
Using human CRC RNA expression data, we identified CAF-specific factors involved in BMP signaling, then verified and characterized their expression in the CRC stroma by in situ hybridization. CRC tumoroids and a mouse model of CRC hepatic metastasis were used to test approaches to modify BMP signaling and treat CRC.
RESULTS
We identified Grem1 and Islr as CAF-specific genes involved in BMP signaling. Functionally, GREM1 and ISLR acted to inhibit and promote BMP signaling, respectively. Grem1 and Islr marked distinct fibroblast subpopulations and were differentially regulated by transforming growth factor β and FOXL1, providing an underlying mechanism to explain fibroblast biological dichotomy. In patients with CRC, high GREM1 and ISLR expression levels were associated with poor and favorable survival, respectively. A GREM1-neutralizing antibody or fibroblast Islr overexpression reduced CRC tumoroid growth and promoted Lgr5
CONCLUSIONS
Stromal BMP signaling predicts and modifies CRC progression and survival, and it can be therapeutically targeted by novel AAV-directed gene delivery to the liver.
Identifiants
pubmed: 33197448
pii: S0016-5085(20)35400-7
doi: 10.1053/j.gastro.2020.11.011
pii:
doi:
Substances chimiques
Bone Morphogenetic Proteins
0
GREM1 protein, human
0
ISLR protein, human
0
Immunoglobulins
0
Intercellular Signaling Peptides and Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1224-1239.e30Subventions
Organisme : Wellcome Trust
ID : 206314/Z/17/Z
Pays : United Kingdom
Commentaires et corrections
Type : ErratumIn
Informations de copyright
Copyright © 2021 AGA Institute. All rights reserved.