Evidence map›Paper›PMID 28809766›Full record

ArticlePain2017

CRISPR/Cas9 editing of Nf1 gene identifies CRMP2 as a therapeutic target in neurofibromatosis type 1-related pain that is reversed by (S)-Lacosamide.

Aubin Moutal, Xiaofang Yang, Wennan Li, Kerry B Gilbraith, Shizhen Luo, Song Cai, Liberty François-Moutal, Lindsey A Chew, Seul Ki Yeon, Shreya S Bellampalli and 7 more

Open access · greenAbstract read
In one paragraph

Article in Pain, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
7.6field-weighted citation impact, top 2% 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

49 citing papers in PubMed, 88 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Pathogenic Role of FGFR3 Autoantibodies in Small Fiber Neuropathy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  5. Neurofibromin 1 (International journal of molecular sciences · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
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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

17 authors at 3 institutions in 3 countries.

Aubin MoutalDepartments of Pharmacology and.
Xiaofang YangDepartments of Pharmacology and.
Wennan LiDepartments of Pharmacology and.
Kerry B GilbraithAnesthesiology, College of Medicine, University of Arizona, Tucson, AZ, USA.
Shizhen LuoDepartments of Pharmacology and.
Song CaiDepartments of Pharmacology and.
Liberty François-MoutalDepartments of Pharmacology and.
Lindsey A ChewDepartments of Pharmacology and.
Seul Ki YeonDepartment of Biological Chemistry, University of Science and Technology and Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Shreya S BellampalliDepartments of Pharmacology and.
Chaoling QuDepartments of Pharmacology and.
Jennifer Y XieDepartments of Pharmacology and.
Mohab M IbrahimDepartments of Pharmacology and.
May KhannaDepartments of Pharmacology and.
Ki Duk ParkDepartment of Biological Chemistry, University of Science and Technology and Center for Neuro-Medicine, Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.
Frank PorrecaDepartments of Pharmacology and.
Rajesh KhannaDepartments of Pharmacology and.
Apple (Israel) · ILKorea Institute of Science and Technology · KRUniversity of Arizona · US

Funding

CRMP2, mitochondria, and Huntington’s diseaseR01NS098772 · NINDS · INDIANA UNIVERSITY INDIANAPOLIS · PI BRUSTOVETSKY, NICKOLAY, KHANNA, RAJESH · 2017 to 2021
$2.8M
CRMP2, Nav1.7 sodium channel, and chronic painR01DA042852 · NIDA · UNIVERSITY OF ARIZONA · PI KHANNA, RAJESH · 2017 to 2021
$1.9M
NIDA NIH HHS R01 DA042852NINDS NIH HHS R01 NS098772
6 · The paper itself

Abstract

Neurofibromatosis type 1 (NF1) is a rare autosomal dominant disease linked to mutations of the Nf1 gene. Patients with NF1 commonly experience severe pain. Studies on mice with Nf1 haploinsufficiency have been instructive in identifying sensitization of ion channels as a possible cause underlying the heightened pain suffered by patients with NF1. However, behavioral assessments of Nf1 mice have led to uncertain conclusions about the potential causal role of Nf1 in pain. We used the clustered regularly interspaced short palindromic repeats (CRISPR)-associated 9 (CRISPR/Cas9) genome editing system to create and mechanistically characterize a novel rat model of NF1-related pain. Targeted intrathecal delivery of guide RNA/Cas9 nuclease plasmid in combination with a cationic polymer was used to generate allele-specific C-terminal truncation of neurofibromin, the protein encoded by the Nf1 gene. Rats with truncation of neurofibromin, showed increases in voltage-gated calcium (specifically N-type or CaV2.2) and voltage-gated sodium (particularly tetrodotoxin-sensitive) currents in dorsal root ganglion neurons. These gains-of-function resulted in increased nociceptor excitability and behavioral hyperalgesia. The cytosolic regulatory protein collapsin response mediator protein 2 (CRMP2) regulates activity of these channels, and also binds to the targeted C-terminus of neurofibromin in a tripartite complex, suggesting a possible mechanism underlying NF1 pain. Prevention of CRMP2 phosphorylation with (S)-lacosamide resulted in normalization of channel current densities, excitability, as well as of hyperalgesia following CRISPR/Cas9 truncation of neurofibromin. These studies reveal the protein partners that drive NF1 pain and suggest that CRMP2 is a key target for therapeutic intervention.

Indexed as

AcetamidesAnimalsCalcium Channels, N-TypeCRISPR-Cas SystemsFemaleGanglia, SpinalGenes, Neurofibromatosis 1Intercellular Signaling Peptides and ProteinsLacosamideMaleNerve Tissue ProteinsNeurofibromin 1NeuronsPainPhosphorylationRats, Sprague-DawleyAcetamidesCalcium Channels, N-Typecollapsin response mediator protein-2Intercellular Signaling Peptides and ProteinsLacosamideNerve Tissue ProteinsNeurofibromin 1

Identifiers

PMID28809766
PMCPMC6362827
OpenAlexW2725140374

What OpenQuestion holds

Textmetadata
LicenceTDM
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.