Cited by 126Protein Kinase Regulation and GTPase SignalingChemical Synthesis and AnalysisProtein Tyrosine Phosphatases

K-Ras(G12D)-selective inhibitory peptides generated by random peptide T7 phage display technology

Sakamoto, Kotaro, Kamada, Yusuke, Sameshima, Tomoya, Yaguchi, Masahiro, Niida, Ayumu, Sasaki, Shigekazu, Miwa, Masanori, Ohkubo, Shoichi +4 more·2017·Biochemical and Biophysical Research Communications

Abstract

Amino-acid mutations of Gly 12 (e.g. G12D, G12V, G12C) of V-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog (K-Ras), the most promising drug target in cancer therapy, are major growth drivers in various cancers. Although over 30 years have passed since the discovery of these mutations in most cancer patients, effective mutated K-Ras inhibitors have not been marketed. Here, we report novel and selective inhibitory peptides to K-Ras(G12D). We screened random peptide libraries displayed on T7 phage against purified recombinant K-Ras(G12D), with thorough subtraction of phages bound to wild-type K-Ras, and obtained KRpep-2 (Ac-RRCPLYISYDPVCRR-NH 2) as a consensus sequence. KRpep-2 showed more than 10-fold binding- and inhibition-selectivity to K-Ras(G12D), both in SPR analysis and GDP/GTP exchange enzyme assay. K D and IC 50 values were 51 and 8.9 nM, respectively. After subsequent sequence optimization, we successfully generated KRpep-2d (Ac-RRRRCPLYISYDPVCRRRR-NH 2) that inhibited enzyme activity of K-Ras(G12D) with IC 50 = 1.6 nM and significantly suppressed ERK-phosphorylation, downstream of K-Ras(G12D), along with A427 cancer cell proliferation at 30 μM peptide concentration. To our knowledge, this is the first report of a K-Ras(G12D)-selective inhibitor, contributing to the development and study of K-Ras(G12D)-targeting drugs.

Integrity signals

Registry

Crossref · 10.1016/j.bbrc.2017.01.147

Cites

20 of 20 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Peptide KRpep-2 and optimized KRpep-2d selectively inhibit K-RasG12D and downstream ERK activation.

    “For example, by screening phage-displayed peptide libraries against K-RasG12D versus wide type K-Ras, peptide KRpep-2 (Ac-RRCPLYISYDPVCRR-NH2), and the optimized sequence, KRpep-2d (Ac-RRRRCPLYISYDPVCRRRR-NH2), were identified as capable of selectively inhibiting K-RasG12D and downstream ERK activation.54”

    From Overcoming Resistance to Drugs Targeting KRAS Mutation (2020) · cites this paper as [54]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Sakamoto, K., Kamada, Y., Sameshima, T., Yaguchi, M., Niida, A., Sasaki, S., Miwa, M., Ohkubo, S., Sakamoto, J.-I., Kamaura, M., Cho, N., & Tani, A.
Affiliations
Takeda (Japan) (JP)
Corresponding author
Sakamoto, Kotaro
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2017-03
Volume
484
Issue
3
Pages
605-611
ISSN
0006-291X (ISSN-L)
OpenAlex
W2580339463
Cited by
118
References
20
Citations by year
2026: 9 · 2025: 12 · 2024: 14 · 2023: 14 · 2022: 17 · 2021: 20 · 2020: 13 · 2019: 8 · 2018: 3 · 2017: 8
FWCI
3.80
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
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 › Chemical Synthesis and Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
Keywords
KRAS G12D, peptide inhibitors, T7 phage display, peptide library screening, ERK1/2 phosphorylation, cancer drug targets
MeSH terms
Antineoplastic Agents, Binding Sites, Enzyme Activation, Humans, Neoplasms, Experimental, Protease Inhibitors, Protein Binding, Proto-Oncogene Proteins p21(ras), Bacteriophage T7, Peptide Library, Protein Interaction Mapping, Cell Line, Tumor, Drug Discovery

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review