Cited by 283Protein Kinase Regulation and GTPase SignalingMelanoma and MAPK PathwaysProtein Tyrosine Phosphatases

Inhibition of RAS function through targeting an allosteric regulatory site

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Spencer-Smith, Russell, Koide, Akiko, Zhou, Yong, Eguchi, Raphael R, Sha, Fern, Gajwani, Priyanka, Santana, Dianicha, Gupta, Ankit +15 more·2017·Nature Chemical Biology

Abstract

RAS GTPases are important mediators of oncogenesis in humans. However, pharmacological inhibition of RAS has proved challenging. Here we describe a functionally critical region, located outside the effector lobe of RAS, that can be targeted for inhibition. We developed NS1, a synthetic binding protein (monobody) that bound with high affinity to both GTP- and GDP-bound states of H-RAS and K-RAS but not N-RAS. NS1 potently inhibited growth factor signaling and oncogenic H-RAS- and K-RAS-mediated signaling and transformation but did not block oncogenic N-RAS, BRAF or MEK1. NS1 bound the α4-β6-α5 region of RAS, which disrupted RAS dimerization and nanoclustering and led to blocking of CRAF-BRAF heterodimerization and activation. These results establish the importance of the α4-β6-α5 interface in RAS-mediated signaling and define a previously unrecognized site in RAS for inhibiting RAS function.

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Authors
Spencer-Smith, R., Koide, A., Zhou, Y., Eguchi, R. R., Sha, F., Gajwani, P., Santana, D., Gupta, A., Jacobs, M., Herrero-Garcia, E., Cobbert, J., Lavoie, H., Smith, M., Rajakulendran, T., Dowdell, E., Okur, M. N., Dementieva, I., Sicheri, F., Therrien, M., Hancock, J. F., Ikura, M., Koide, S., & O'Bryan, J. P.
Affiliations
  • University of Illinois Chicago (US)
  • University of Chicago (US)
  • Institute for Research in Immunology and Cancer (CA)
  • University of Toronto (CA)
Corresponding author
Koide, Shohei
Venue
Nature Chemical Biology
Published
2016-11-07
Volume
13
Issue
1
Pages
62-68
ISSN
  • 1552-4450 (ISSN-L)
  • 1552-4469
OpenAlex
W2548573003
Cited by
283
References
62
Citations by year
2026: 11 · 2025: 19 · 2024: 25 · 2023: 26 · 2022: 24 · 2021: 47 · 2020: 45 · 2019: 33 · 2018: 25 · 2017: 25 · 2016: 1
FWCI
14.56
Type
journal article
Language
en
Open access
Locations
  • Nature Chemical Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Veterans Affairs (I01 BX002095)
  • National Cancer Institute (R21CA201717, F31CA192822, R01CA116708, R01CA212608)
  • National Institute of General Medical Sciences (R01GM090324)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
Keywords
Ras GTPase, allosteric inhibition, monobody, H-Ras, KRAS, NRAS, oncogenic transformation, growth factor signaling
MeSH terms
Allosteric Site, Animals, Antibodies, Monoclonal, Cells, Cultured, Chlorocebus aethiops, Humans, ras Proteins, COS Cells, NIH 3T3 Cells, Mice, HEK293 Cells

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