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Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
Published on: September 19, 2018
Signal transduction pathways and resistance to targeted therapies in glioma
Arata Tomiyama1, Koichi Ichimura2
1Division of Brain Tumor Translational Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan; Department of Neurosurgery, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama 359-8513, Japan.
Abstract:
Although surgical techniques and adjuvant therapies have undergone progressive development for decades, the therapeutic outcomes for treating glioblastoma (GBM) remain poor. The main reasons for the poor prognosis of gliomas are that limited tumor tissue that can be resected (to preserve brain functions) and that residual tumors are often resistant to irradiation and chemotherapy. Therefore, overcoming the resistance of residual tumors against adjuvant therapy is urgently needed for glioma treatment. Recent large cohort studies of genetic alterations in GBM demonstrated that both genetic information and intracellular molecular signaling are networked in gliomas and that such information may help clarify which molecules or signals serve essential roles in resistance against radiation or chemotherapy, highlighting them as potential novel therapeutic targets against refractory gliomas. In this review, we summarize the current understanding of molecular networks that govern glioma biology, mainly based on cohort studies or recent evidence, with a focus on how intracellular signaling molecules in gliomas associate with each other and regulate refractoriness against current therapy.
Insights
Glioblastoma treatment remains poor due to resistant residual tumors. Understanding molecular networks offers new therapeutic targets for refractory gliomas, improving patient outcomes.
Area of Science:
- Neuro-oncology
- Molecular Biology
- Genetics
Background:
- Glioblastoma (GBM) treatment outcomes remain poor despite advances in surgery and adjuvant therapies.
- Limited tumor resection and residual tumor resistance to radiation and chemotherapy contribute to poor prognosis.
- Novel therapeutic strategies are urgently needed to overcome treatment resistance in gliomas.
Purpose of the Study:
- To review current understanding of molecular networks governing glioma biology.
- To focus on how intracellular signaling molecules in gliomas contribute to therapeutic resistance.
- To identify potential novel therapeutic targets against refractory gliomas.
Main Methods:
- Review of recent large cohort studies on genetic alterations in glioblastoma.
- Analysis of evidence on molecular networks and intracellular signaling pathways in gliomas.
- Focus on the association between signaling molecules and resistance to current therapies.
Main Results:
- Genetic information and intracellular molecular signaling are networked in gliomas.
- Specific molecules and signaling pathways play essential roles in resistance to radiation and chemotherapy.
- These networks offer insights into the mechanisms of refractoriness in gliomas.
Conclusions:
- Understanding molecular networks is crucial for developing effective glioma treatments.
- Targeting specific intracellular signaling molecules may overcome resistance to current therapies.
- This knowledge can lead to novel therapeutic strategies for refractory glioblastoma.
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