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Frontiers in Glioma Pathobiology

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 (15 November 2022) | Viewed by 2630

Special Issue Editor


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Guest Editor
NeuroMarkers PLLC, Houston, TX, USA
Interests: brain tumors; glioblastoma; diffuse midline glioma; genomics and molecular classification; signaling pathways; PTEN tumor suppressor; NHERF1; diagnostic markers; therapy targets; glioma epidemiology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Glioblastoma is a high-grade diffuse glioma and the most frequent primary intraparenchymal brain tumor. To this day, treatment is a challenge and survival relatively poor. Therapy resistance stems from the pathobiological characteristics of diffuse gliomas, starting from the sanctuary generated by the blood–brain barrier preventing drug and immune cell cytotoxicity to resistance to radiotherapy due to genetic, epigenetic, DNA damage response and signal transduction mechanisms, cancer cell invasiveness and interaction with the microenvironment, and tumor heterogeneity and reprogramming. It is now clear that the understanding of the mechanisms of glioma initiation and progression is key to effective treatment development. In this Special Edition, experts in the field are invited to share a brief overview of the current knowledge on diffuse glioma pathobiology, as well as to highlight their forefront research findings and propose actionable biological and molecular vulnerabilities for these tumors deriving from their own research.

Dr. Maria-Magdalena Georgescu
Guest Editor

Manuscript Submission Information

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Keywords

  • diffuse glioma/glioblastoma/diffuse astrocytoma/oligodendroglioma/diffuse midline glioma
  • tumor initiation/cells of origin
  • genetics/somatic and germline
  • cell cycle/DNA damage response
  • epigenetic control/telomere maintenance
  • growth signaling pathways/metabolism
  • tumor heterogeneity
  • invasiveness/microenvironment/angiogenesis/immune response

Published Papers (1 paper)

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Research

17 pages, 1787 KiB  
Article
PLOD2 Is a Prognostic Marker in Glioblastoma That Modulates the Immune Microenvironment and Tumor Progression
by Nina Kreße, Hannah Schröder, Klaus-Peter Stein, Ludwig Wilkens, Christian Mawrin, Ibrahim Erol Sandalcioglu and Claudia Alexandra Dumitru
Int. J. Mol. Sci. 2022, 23(11), 6037; https://doi.org/10.3390/ijms23116037 - 27 May 2022
Cited by 8 | Viewed by 1946
Abstract
This study aimed to investigate the role of Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase 2 (PLOD2) in glioblastoma (GBM) pathophysiology. To this end, PLOD2 protein expression was assessed by immunohistochemistry in two independent cohorts of patients with primary GBM (n1 = 204 and n [...] Read more.
This study aimed to investigate the role of Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase 2 (PLOD2) in glioblastoma (GBM) pathophysiology. To this end, PLOD2 protein expression was assessed by immunohistochemistry in two independent cohorts of patients with primary GBM (n1 = 204 and n2 = 203, respectively). Association with the outcome was tested by Kaplan–Meier, log-rank and multivariate Cox regression analysis in patients with confirmed IDH wild-type status. The biological effects and downstream mechanisms of PLOD2 were assessed in stable PLOD2 knock-down GBM cell lines. High levels of PLOD2 significantly associated with (p1 = 0.020; p2< 0.001; log-rank) and predicted (cohort 1: HR = 1.401, CI [95%] = 1.009–1.946, p1 = 0.044; cohort 2: HR = 1.493; CI [95%] = 1.042–2.140, p2 = 0.029; Cox regression) the poor overall survival of GBM patients. PLOD2 knock-down inhibited tumor proliferation, invasion and anchorage-independent growth. MT1-MMP, CD44, CD99, Catenin D1 and MMP2 were downstream of PLOD2 in GBM cells. GBM cells produced soluble factors via PLOD2, which subsequently induced neutrophils to acquire a pro-tumor phenotype characterized by prolonged survival and the release of MMP9. Importantly, GBM patients with synchronous high levels of PLOD2 and neutrophil infiltration had significantly worse overall survival (p < 0.001; log-rank) compared to the other groups of GBM patients. These findings indicate that PLOD2 promotes GBM progression and might be a useful therapeutic target in this type of cancer. Full article
(This article belongs to the Special Issue Frontiers in Glioma Pathobiology)
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