Angiogenin mutations in Hungarian patients with amyotrophic lateral sclerosis: Clinical, genetic, computational, and functional analyses

Kornélia Tripolszki, Judit Danis, Aditya K. Padhi, James Gomes, Renáta Bozó, Zsófia F. Nagy, Dóra Nagy, P. Klivényi, J. Engelhardt, M. Széll

Research output: Article

2 Citations (Scopus)

Abstract

Introduction: Mutations in the angiogenin (ANG) gene are known to be associated with both familial and sporadic amyotrophic lateral sclerosis (ALS). The majority of disease-causing mutations of ANG result in loss of either ribonucleolytic activity, nuclear translocation activity or both. Methods: We sequenced ANG gene from a total of 136 sporadic ALS patients and 112 healthy controls of Hungarian origin. To elucidate the role of the R33W mutation in the disease mechanism, computational, and functional analyses were performed. Results: Mutation screening revealed a mutation located in the signal peptide (M-24I) and two mutations that affect the mature protein (R33W, V103I). The R33W mutation, which has not been previously detected in ALS patients, affects the key amino acid of the nuclear translocation signal of the ANG protein. Molecular dynamics simulations suggested that the R33W mutation results in partial loss of ribonucleolytic activity and reduced nuclear translocation activity. The ribonucleolytic assay and nuclear translocation assay of the R33W ANG protein confirmed the molecular dynamics results. Conclusions: In the Hungarian ALS population, the observed frequency of ANG mutations was 2.9%, which is higher than previously reported for sporadic cohorts. The evidence from computational and functional analyses support the deleterious effect of the novel R33W variant detected in this study.

Original languageEnglish
Article numbere01293
JournalBrain and Behavior
DOIs
Publication statusPublished - jan. 1 2019

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Amyotrophic Lateral Sclerosis
Mutation
Molecular Dynamics Simulation
Proteins
angiogenin
Mutation Rate
Protein Sorting Signals
Genes
Amino Acids
Population

ASJC Scopus subject areas

  • Behavioral Neuroscience

Cite this

Angiogenin mutations in Hungarian patients with amyotrophic lateral sclerosis : Clinical, genetic, computational, and functional analyses. / Tripolszki, Kornélia; Danis, Judit; Padhi, Aditya K.; Gomes, James; Bozó, Renáta; Nagy, Zsófia F.; Nagy, Dóra; Klivényi, P.; Engelhardt, J.; Széll, M.

In: Brain and Behavior, 01.01.2019.

Research output: Article

Tripolszki, Kornélia ; Danis, Judit ; Padhi, Aditya K. ; Gomes, James ; Bozó, Renáta ; Nagy, Zsófia F. ; Nagy, Dóra ; Klivényi, P. ; Engelhardt, J. ; Széll, M. / Angiogenin mutations in Hungarian patients with amyotrophic lateral sclerosis : Clinical, genetic, computational, and functional analyses. In: Brain and Behavior. 2019.
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abstract = "Introduction: Mutations in the angiogenin (ANG) gene are known to be associated with both familial and sporadic amyotrophic lateral sclerosis (ALS). The majority of disease-causing mutations of ANG result in loss of either ribonucleolytic activity, nuclear translocation activity or both. Methods: We sequenced ANG gene from a total of 136 sporadic ALS patients and 112 healthy controls of Hungarian origin. To elucidate the role of the R33W mutation in the disease mechanism, computational, and functional analyses were performed. Results: Mutation screening revealed a mutation located in the signal peptide (M-24I) and two mutations that affect the mature protein (R33W, V103I). The R33W mutation, which has not been previously detected in ALS patients, affects the key amino acid of the nuclear translocation signal of the ANG protein. Molecular dynamics simulations suggested that the R33W mutation results in partial loss of ribonucleolytic activity and reduced nuclear translocation activity. The ribonucleolytic assay and nuclear translocation assay of the R33W ANG protein confirmed the molecular dynamics results. Conclusions: In the Hungarian ALS population, the observed frequency of ANG mutations was 2.9{\%}, which is higher than previously reported for sporadic cohorts. The evidence from computational and functional analyses support the deleterious effect of the novel R33W variant detected in this study.",
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AU - Gomes, James

AU - Bozó, Renáta

AU - Nagy, Zsófia F.

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