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PD-L1/miR-155 Interplay in Pediatric High-Grade Glioma
Jakub Litak1, Wiesława Grajkowska2, Jacek Bogucki3
1Department of Immunology, Medical University of Lublin, 20-093 Lublin, Poland.
Insights
Pediatric high-grade glioma (p-HGG) is a rare but aggressive brain tumor. This study found a significant correlation between miR-155 concentration and PD-L1 expression in p-HGG tumor tissue.
Area of Science:
- Pediatric oncology
- Neuro-oncology
- Molecular biology
Background:
- High-grade pediatric glioma (p-HGG) is a rare, aggressive brain malignancy, accounting for 3-15% of pediatric brain tumors.
- Brain tumors are the second most common malignancy in children, and the leading cause of solid tumor incidence.
- Limited data exists regarding PD-L1 expression in pediatric glioma patients.
Purpose of the Study:
- To investigate the correlation between miR-155 concentration and PD-L1 expression in pediatric high-grade glioma (p-HGG) tumor tissue.
- To contribute to the understanding of potential biomarkers in pediatric brain tumors.
Main Methods:
- Histopathological diagnosis of p-HGG (WHO 2016 Grade IV Glioblastoma) was performed by an experienced neuropathologist.
- Analysis of miR-155 concentration and PD-L1 expression levels in tumor tissue from 14 pediatric patients.
- Patients were treated at Children's Memorial Health Institute in Warsaw, Poland.
Main Results:
- A significant correlation was identified between miR-155 concentration and PD-L1 expression levels in p-HGG tumor tissue.
- This finding suggests a potential molecular link between miR-155 and PD-L1 in pediatric glioma.
Conclusions:
- The study highlights a significant correlation between miR-155 and PD-L1 in pediatric high-grade glioma.
- Further research is warranted to explore the clinical implications of this association for pediatric brain tumor treatment and biomarker development.
Abstract:
High-grade pediatric glioma (p-HGG-WHO 2021, formerly GBM-WHO 2016), as a common, aggressive, and highly lethal primary brain malignancy in adults, accounts for only 3-15% of primary brain tumors in pediatric patients. After leukemia, brain malignancies are the second most common in the pediatric population and first in incidences concerning solid tumors. This study was designed on the basis of 14 pediatric patients hospitalized at Children's Memorial Health Institute in Warsaw, Poland, due to p-HGG treatment. All the patients had a histopathological diagnosis performed by an experienced neuropathologist according to WHO guidelines (WHO 2016 Grade IV Glioblastoma). A significant correlation was found between the miR-155 concentration and the level of PD-L1 expression in p-HGG tumor tissue. Very few reports have indicated PD-L1 expression in pediatric patients.
