Cited by 61Protein Tyrosine PhosphatasesProtein Kinase Regulation and GTPase SignalingOrganophosphorus compounds synthesis

Discovery of a Novel Series of Inhibitors of Lymphoid Tyrosine Phosphatase with Activity in Human T Cells

Open access
Stanford, Stephanie M., Krishnamurthy, Divya, Falk, Matthew D., Messina, Rossella, Debnath, Bikash, Li, Sheng, Liu, Tong, Kazemi, Roza +9 more·2011·Journal of Medicinal Chemistry

Abstract

The lymphoid tyrosine phosphatase LYP, encoded by the PTPN22 gene, is a critical regulator of signaling in T cells and recently emerged as a candidate target for therapy of autoimmune diseases. Here, by library screening, we identified a series of noncompetitive inhibitors of LYP that showed activity in primary T cells. Kinetic analysis confirmed that binding of the compounds to the phosphatase is nonmutually exclusive with respect to a known bidentate competitive inhibitor. The mechanism of action of the lead inhibitor compound 4e was studied by a combination of hydrogen/deuterium-exchange mass spectrometry and molecular modeling. The results suggest that the inhibitor interacts critically with a hydrophobic patch located outside the active site of the phosphatase. Targeting of secondary allosteric sites is viewed as a promising yet unexplored approach to develop pharmacological inhibitors of protein tyrosine phosphatases. Our novel scaffold could be a starting point to attempt development of "nonactive site" anti-LYP pharmacological agents.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1021/jm101202j

Cites

60 of 60 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

  • RMC-4550 (IC50 = 0.583 nM) is a potent and selective SHP2 inhibitor that has shown efficacy against human cancer models with RAS-GTP-dependent oncogenic BRAF, NF1 deletion, or nucleotide cycle oncogenic RAS (e.g., KRASG12C).

    “RMC-4550 (91) (IC50 = 0.583 nM) is a potent and selective SHP2 inhibitor that has shown efficacy against human cancer models with RAS-GTP-dependent oncogenic BRAF, NF1 deletion, or nucleotide cycle oncogenic RAS (e.g., KRASG12C).289”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Stanford, S. M., Krishnamurthy, D., Falk, M. D., Messina, R., Debnath, B., Li, S., Liu, T., Kazemi, R., Dahl, R., He, Y., Yu, X., Chan, A. C., Zhang, Z.-Y., Barrios, A. M., Woods, V. L., Neamati, N., & Bottini, N.
Affiliations
  • La Jolla Institute for Immunology (US)
  • University of Utah (US)
  • University of Southern California (US)
  • University of California San Diego (US)
  • Sanford Burnham Prebys Medical Discovery Institute (US)
  • Indiana University Indianapolis (US)
  • Genentech (US)
Corresponding author
  • Neamati, Nouri
  • Bottini, Nunzio
Venue
Journal of Medicinal Chemistry
Published
2011-02-22
Volume
54
Issue
6
Pages
1640-1654
ISSN
  • 0022-2623 (ISSN-L)
  • 1520-4804
OpenAlex
W1979069875
Cited by
59
References
60
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 3 · 2022: 1 · 2021: 2 · 2020: 1 · 2019: 1 · 2018: 3 · 2017: 6 · 2016: 5 · 2015: 6 · 2014: 5 · 2013: 9 · 2012: 5
FWCI
2.86
Type
journal article
Language
en
Open access
Locations
  • Journal of Medicinal Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • IUScholarWorks (Indiana University) (submittedVersion)
Funders
  • U.S. Public Health Service (R21N-S056945)
  • National Cancer Institute (CA099835, CA-69202, CA118595, R33CA099835, R21CA099835, R21CA118595, R01CA069202)
  • National Institute of General Medical Sciences (R01GM020501, GM020501, F32GM020501, R01GM066170, GM066170)
  • National Institute of Allergy and Infectious Diseases (AI 076961, R01AI081982, AI081982, R21AI076961, AI2008031)
  • National Institute of Neurological Disorders and Stroke (R21NS056945)
  • National Center for Research Resources (S10RR029388, RR029388)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Physical Sciences › Chemistry › Organic Chemistry › Organophosphorus compounds synthesis
Keywords
lymphomatoid papulosis, PTPN22, non-competitive inhibitors, T cells, allosteric inhibition, hydrophobic patch, protein tyrosine phosphatase inhibitors, autoimmune disease, hydrogen-deuterium exchange mass spectrometry, molecular modeling, library screening
MeSH terms
Allosteric Site, Animals, Cell Membrane Permeability, Cells, Cultured, Humans, Kinetics, Lymphocyte Activation, Mice, Inbred C57BL, Models, Molecular, Mutation, Protein Conformation, Mass Spectrometry, Stereoisomerism, Structure-Activity Relationship, T-Lymphocytes, Tetrazoles, Quinolones, Mice, Knockout, Catalytic Domain, Deuterium Exchange Measurement, Mice, Protein Tyrosine Phosphatase, Non-Receptor Type 22, Small Molecule Libraries, Hydrophobic and Hydrophilic Interactions

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