Prognostic Biomarkers and Target Proteins for Treatment of High-grade Gliomas
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
The survival for high-grade glioma patients is poor and the treatment may cause severe side effects. A common obstacle in the treatment is chemoresistance. To improve the quality of life and prolong survival for these patients prognostic biomarkers and new approaches for chemotherapy are needed. To this end, a strategy to evade chemoresistance was evaluated by combining chemotherapeutic drugs with agents inhibiting resistance mechanisms identified by a bioinformatic analysis (paper I). The prognostic value of 13 different proteins was analyzed in this thesis (papers II-IV). Two of them, p38 mitogen-activated protein kinase (MAPK) and protein tyrosine phosphatase non-receptor type 6 (PTPN6, also known as SHP1) were analyzed for their potential as targets in combination chemotherapy (in paper III and IV, respectively).
We found that:
- PTPN6 expression and methylation status may be important for survival of anaplastic glioma patients, p38 MAPK phosphorylation may be a potential negative prognostic biomarker for high-grade glioma patients and FGF2 expression may be a potential negative prognostic biomarker for proneural glioma patients.
- PTPN6 may be a useful target for combination chemotherapy with cisplatin, melphalan or bortezomib in high-grade gliomas. The following drug combinations; camptothecin combined with an EGFR or RAC1 inhibitor, imatinib combined with a Notch or RAC1 inhibitor, temozolomide combined with an EGFR or FAK inhibitor and vandetanib combined with a p38 MAPK inhibitor may be useful combination chemotherapy for high-grade gliomas.
Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2014. , 74 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 965
High-grade glioma, prognostic biomarkers, combination chemotherapy, DNA methylation, FGF2, p38 MAPK, PTPN6, camptothecin, imatinib, vandetanib, EGFR, RAC1, Notch
Cell and Molecular Biology Cancer and Oncology
Research subject Medical Science; Oncology
IdentifiersURN: urn:nbn:se:uu:diva-215079ISBN: 978-91-554-8839-0OAI: oai:DiVA.org:uu-215079DiVA: diva2:686010
2014-03-07, Rudbecksalen, Rudbecklaboratoriet, Dag Hammarskjölds väg 20, Uppsala, 13:15 (English)
Ekman, SimonLennartsson, JohanGullbo, JoachimBergqvist, MichaelBlomquist, ErikBergström, Stefan
List of papers