Cited by 81Protein Kinase Regulation and GTPase SignalingCellular transport and secretionProtein Tyrosine Phosphatases

RasGRP1 opposes proliferative EGFR–SOS1–Ras signals and restricts intestinal epithelial cell growth

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Depeille, Philippe, Henricks, Linda M., van de Ven, Robert A. H., Lemmens, Ed, Wang, Chih-Yang, Matli, Mary, Werb, Zena, Haigis, Kevin M. +3 more·2015·Nature Cell Biology

Abstract

The character of EGFR signals can influence cell fate but mechanistic insights into intestinal EGFR-Ras signalling are limited. Here we show that two distinct Ras nucleotide exchange factors, RasGRP1 and SOS1, lie downstream of EGFR but act in functional opposition. RasGRP1 is expressed in intestinal crypts where it restricts epithelial growth. High RasGRP1 expression in colorectal cancer (CRC) patient samples correlates with a better clinical outcome. Biochemically, we find that RasGRP1 creates a negative feedback loop that limits proliferative EGFR-SOS1-Ras signals in CRC cells. Genetic Rasgrp1 depletion from mice with either an activating mutation in KRas or with aberrant Wnt signalling due to a mutation in Apc resulted in both cases in exacerbated Ras-ERK signalling and cell proliferation. The unexpected opposing cell biological effects of EGFR-RasGRP1 and EGFR-SOS1 signals in the same cell shed light on the intricacy of EGFR-Ras signalling in normal epithelium and carcinoma.

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Authors
Depeille, P., Henricks, L. M., van de Ven, R. A. H., Lemmens, E., Wang, C.-Y., Matli, M., Werb, Z., Haigis, K. M., Donner, D., Warren, R., & Roose, J. P.
Affiliations
  • University of California, San Francisco (US)
  • Massachusetts General Hospital (US)
Corresponding author
  • Depeille, Philippe
  • Roose, Jeroen P.
Venue
Nature Cell Biology
Published
2015-05-25
Volume
17
Issue
6
Pages
804-815
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W1495352559
Cited by
80
References
69
Citations by year
2026: 8 · 2025: 5 · 2024: 13 · 2023: 7 · 2022: 6 · 2021: 7 · 2020: 12 · 2019: 3 · 2018: 7 · 2017: 6 · 2016: 4 · 2015: 2
FWCI
2.75
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion, other-oa)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health (5k01ca118425-05)
  • National Cancer Institute (U54CA143874, K01-CA118425, R01CA057621)
  • National Institute of Allergy and Infectious Diseases (P01AI091580)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
Keywords
RasGRP1, SOS1, EGFR signaling, intestinal epithelial cell proliferation, colorectal cancer, KRAS, Wnt signaling, APC mutation, negative feedback loop, intestinal crypts, carcinogenesis, clinical outcomes
MeSH terms
Animals, Cell Differentiation, Epithelial Cells, Humans, Intestinal Mucosa, Mice, Inbred C57BL, Neoplasm Transplantation, Transplantation, Heterologous, Colorectal Neoplasms, Signal Transduction, Proto-Oncogene Proteins p21(ras), Mice, Knockout, Guanine Nucleotide Exchange Factors, SOS1 Protein, Adenomatous Polyposis Coli Protein, RNA Interference, RNA, Small Interfering, Cell Line, Tumor, Cell Proliferation, Wnt Proteins, Mice, Wnt Signaling Pathway, ErbB Receptors

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