Cytogenomic epileptology

Author:

Iourov Ivan Y.,Gerasimov Alexandr P.,Zelenova Maria A.,Ivanova Natalya E.,Kurinnaia Oksana S.,Zabrodskaya Yulia M.,Demidova Irina A.,Barantsevich Evgeny R.,Vasin Kirill S.,Kolotii Alexey D.,Ushanov Vseslav V.,Sitovskaya Darya A.,Lobzhanidze Timur B.-A.,Iuditskaia Maria E.,Iakushev Nikita S.,Zhumatov Muslim M.,Vorsanova Svetlana G.,Samochernyh Konstantin A.

Abstract

AbstractMolecular cytogenetic and cytogenomic studies have made a contribution to genetics of epilepsy. However, current genomic research of this devastative condition is generally focused on the molecular genetic aspects (i.e. gene hunting, detecting mutations in known epilepsy-associated genes, searching monogenic causes of epilepsy). Nonetheless, chromosomal abnormalities and copy number variants (CNVs) represent an important part of genetic defects causing epilepsy. Moreover, somatic chromosomal mosaicism and genome/chromosome instability seem to be a possible mechanism for a wide spectrum of epileptic conditions. This idea becomes even more attracting taking into account the potential of molecular neurocytogenetic (neurocytogenomic) studies of the epileptic brain. Unfortunately, analyses of chromosome numbers and structure in the affected brain or epileptogenic brain foci are rarely performed. Therefore, one may conclude that cytogenomic area of genomic epileptology is poorly researched. Accordingly, molecular cytogenetic and cytogenomic studies of the clinical cohorts and molecular neurocytogenetic analyses of the epileptic brain appear to be required. Here, we have performed a theoretical analysis to define the targets of the aforementioned studies and to highlight future directions for molecular cytogenetic and cytogenomic research of epileptic disorders in the widest sense. To succeed, we have formed a consortium, which is planned to perform at least a part of suggested research. Taking into account the nature of the communication, “cytogenomic epileptology” has been introduced to cover the research efforts in this field of medical genomics and epileptology. Additionally, initial results of studying cytogenomic variations in the Russian neurodevelopmental cohort are reviewed with special attention to epilepsy. In total, we have concluded that (i) epilepsy-associated cytogenomic variations require more profound research; (ii) ontological analyses of epilepsy genes affected by chromosomal rearrangements and/or CNVs with unraveling pathways implicating epilepsy-associated genes are beneficial for epileptology; (iii) molecular neurocytogenetic (neurocytogenomic) analysis of postoperative samples are warranted in patients suffering from epileptic disorders.

Funder

Ministry of Science and Higher Education of the Russian Federation

Ministry of Health of the Russian Federation

Publisher

Springer Science and Business Media LLC

Subject

Biochemistry (medical),Genetics (clinical),Genetics,Molecular Biology,Molecular Medicine,Biochemistry

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