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Recent Advances on Meningiomas

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Neurobiology".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 1330

Special Issue Editor


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Guest Editor
Department of Clinical Neurosciences, Division of Neurosurgery, Rennes University Hospitals, 2, Rue Henri Le Guilloux, 35000 Rennes, France
Interests: intracranial meningiomas; neurooncology; skullbase surgery; vascular neurosurgery

Special Issue Information

Dear Colleagues,

It is becoming increasingly apparent that complex histological and biomolecular mechanisms play a role in the genesis and recurrence of intracranial meningiomas. Major advances have been made since the description of their recurrence rate in the late 50s by Simpson—when the implementation of the surgical microscope and the advent of accurate and dedicated imaging modalities were not sufficiently powerful to bring new surgical classifications and improve prognostication pertaining to tumor recurrence and histological transformation. 

Whenever a high extent of resection is achieved in low grade meningiomas, it is clear that recurrence rates are reduced. The problem is more complex with intermediate-to-high grade lesions, where recurrence is the result of a complex process involving tumor biology and location, surgical extent of resection and the patient characteristics. The implementation of next-generation diagnostic tools, such as the analysis of the methylome, is certainly promising but has not yet achieved worldwide application. Here, we invite you to submit original and review articles on the topic, focusing on the biomolecular aspects of meningiomas when it comes to their diagnosis, treatment and prognosis.

Dr. Marco V. Corniola
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • intracranial meningiomas
  • methylome
  • biomolecular research
  • microsurgery

Published Papers (1 paper)

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Research

14 pages, 8739 KiB  
Article
Epigenetic Downregulation of Hsa-miR-193b-3p Increases Cyclin D1 Expression Level and Cell Proliferation in Human Meningiomas
by Paulina Kober, Beata Joanna Mossakowska, Natalia Rusetska, Szymon Baluszek, Emilia Grecka, Ryszard Konopiński, Ewa Matyja, Artur Oziębło, Tomasz Mandat and Mateusz Bujko
Int. J. Mol. Sci. 2023, 24(17), 13483; https://doi.org/10.3390/ijms241713483 - 30 Aug 2023
Viewed by 998
Abstract
Meningiomas are common intracranial tumors in adults. Abnormal microRNA (miRNA) expression plays a role in their pathogenesis. Change in miRNA expression level can be caused by impaired epigenetic regulation of miRNA-encoding genes. We found the genomic region covering the MIR193B gene to be [...] Read more.
Meningiomas are common intracranial tumors in adults. Abnormal microRNA (miRNA) expression plays a role in their pathogenesis. Change in miRNA expression level can be caused by impaired epigenetic regulation of miRNA-encoding genes. We found the genomic region covering the MIR193B gene to be DNA hypermethylated in meningiomas based on analysis of genome-wide methylation (HumanMethylation450K Illumina arrays). Hypermethylation of MIR193B was also confirmed via bisulfite pyrosequencing. Both hsa-miR-193b-3p and hsa-miR-193b-5p are downregulated in meningiomas. Lower expression of hsa-miR-193b-3p and higher MIR193B methylation was observed in World Health Organization (WHO) grade (G) II/III tumors as compared to GI meningiomas. CCND1 mRNA was identified as a target of hsa-miR-193b-3p as further validated using luciferase reporter assay in IOMM-Lee meningioma cells. IOMM-Lee cells transfected with hsa-miR-193b-3p mimic showed a decreased cyclin D1 level and lower cell viability and proliferation, confirming the suppressive nature of this miRNA. Cyclin D1 protein expression (immunoreactivity) was higher in atypical than in benign meningiomas, accordingly to observations of lower hsa-miR-193b-3p levels in GII tumors. The commonly observed hypermethylation of MIR193B in meningiomas apparently contributes to the downregulation of hsa-miR-193b-3p. Since hsa-miR-193b-3p regulates proliferation of meningioma cells through negative regulation of cyclin D1 expression, it seems to be an important tumor suppressor in meningiomas. Full article
(This article belongs to the Special Issue Recent Advances on Meningiomas)
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