Evidence map›Paper›PMID 30218115›Full record

ArticleEuropean biophysics journal : EBJ2019

Electrostatic mechanism of V600E mutation-induced B-Raf constitutive activation in colorectal cancer: molecular implications for the selectivity difference between type-I and type-II inhibitors.

Tie Liu, Zhaoshun Wang, Peng Guo, Na Ding

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Article in European biophysics journal : EBJ, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.6field-weighted citation impact, top 31% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 14 citations in OpenAlex.

  1. Antitumor effects of CEP32496 on urothelial carcinoma with BRAF mutation (V595E) in dogs.Canadian journal of veterinary research = Revue canadienne de recherche veterinaire · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Tie LiuDepartment of Anorectal Surgery, Weifang People's Hospital Affiliated to Weifang Medical University, Weifang, 261041, China.
Zhaoshun WangDepartment of Anorectal Surgery, Weifang People's Hospital Affiliated to Weifang Medical University, Weifang, 261041, China.
Peng GuoDepartment of Anorectal Surgery, Weifang People's Hospital Affiliated to Weifang Medical University, Weifang, 261041, China.
Na DingDepartment of Anorectal Surgery, Weifang People's Hospital Affiliated to Weifang Medical University, Weifang, 261041, China. nnadding@sina.cn.
Weifang Medical University · CNWeifang People's Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The oncogenic mutation V600E in B-Raf activation loop (A-loop) has been frequently observed to cause drug resistance in colorectal cancer chemotherapy. Here, the molecular mechanism of V600E-induced conformational flipping of B-Raf activation loop (A-loop) is investigated systematically via continuum electrostatic analysis. It is found that substitution of the electroneutral Val600 residue with negatively charged glutamic acid Glu600 electrostatically destabilizes the inactive DFG-out conformation of B-Raf kinase and promotes its shifting to active DFG-in conformation. This is analogous with natural phosphorylation of Thr598 and/or Ser601 residues in A-loop to activate the kinase, that is, both the mutation and phosphorylation can introduce negative charge to B-Raf A-loop and then trigger the loop flipping. Energetic analysis reveals that the V600E mutation can affect inhibitor binding indirectly via regulation of kinase conformation. Type-I and type-II inhibitors respond distinctly to V600E mutation; the former is sensitized by the mutation, while the latter generally shows a low sensitivity to the mutation. Based on this guideline, the sophisticated type-I pan-kinase inhibitor Staurosporine as well as its analogs Midostaurin and Lestaurtinib are identified as potent mutant-selective inhibitors by modeling analysis and kinase assay, which exhibit a moderate or high selectivity for B-Raf

Indexed as

MutationStatic ElectricityColorectal NeoplasmsEnzyme ActivationModels, MolecularPhosphorylationProtein ConformationProtein Kinase InhibitorsProto-Oncogene Proteins B-rafProtein Kinase InhibitorsProto-Oncogene Proteins B-rafB-Raf kinaseColorectal cancerConstitutive activationInhibitor selectivityPhosphorylationV600E mutation

Identifiers

PMID30218115
OpenAlexW2891529277

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.