Related Experiment Video
Updated: Apr 14, 2026
05:45
Quantitative Immunohistochemistry of the Cellular Microenvironment in Patient Glioblastoma Resections
Published on: July 31, 2017
10.2K
Tumor border sharpness correlates with HLA-G expression in low-grade gliomas
Yinyan Wang1, Xing Fan1, Hongming Li2
1Beijing Neurosurgical Institute, Capital Medical University, Beijing, China; Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
Journal of Neuroimmunology
|April 24, 2015
Summary
High human leukocyte antigen-G (HLA-G) expression in low-grade gliomas correlates with blurred tumor borders and less complete surgical removal. This suggests HLA-G may promote tumor invasion and immune evasion.
Area of Science:
- Neuro-oncology
- Immunology
- Radiology
Background:
- Human leukocyte antigen-G (HLA-G) is a molecule in the tumor microenvironment that aids cancer cells in evading immune responses.
- Understanding factors influencing glioma invasiveness is crucial for treatment planning.
Purpose of the Study:
- To investigate the association between HLA-G expression and the radiologic appearance of low-grade glioma tumor borders.
- To explore the relationship between HLA-G, tumor size, and extent of surgical resection.
Main Methods:
- Retrospective analysis of preoperative T2-weighted MRI scans from 72 low-grade glioma patients.
- Manual segmentation of tumor areas and registration to a standard brain template.
- Quantification of tumor border sharpness using voxel intensity ratios (tumor vs. paratumor).
Main Results:
- Higher HLA-G expression was linked to larger tumor size and less defined (blurred) tumor boundaries.
- Tumors with high HLA-G expression showed lower mean hyperintensive contrast.
- Patients with high HLA-G expression had a lower likelihood of complete tumor resection.
Conclusions:
- This study establishes a novel association between HLA-G expression and the radiologic morphology of low-grade glioma borders.
- Blurred tumor margins in high HLA-G expressing gliomas may indicate a propensity for diffuse invasion.
- HLA-G's role in immune escape could impact surgical outcomes in low-grade gliomas.
