Rho GDP Protein Expression Change and Investigation of ItsEffect on GDP/GTP Cycle in Human Brain Oligodendroglioma

authors:

avatar Solmaz Khaghani Razi Abad 1 , avatar Mehdi Pooladi 1 , avatar Mehrdad Hashemi 2 , avatar Afshin Moradi 3 , avatar Sara Sobhi 4 , avatar Alireza Zali 5 , avatar Masoumea Mousavi 6 , avatar Hakimeh Zali 6 , avatar Mona Zamanian Azodi 6 , avatar Azadeh Rakhshan 7 , avatar Reza Vafaee 6 , avatar Mostafa Rezaei Tavirani 6 , *

Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Dept. of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
Dept. of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
Dept. of Pathology, Shohada Hospital, Shahid Beheshti University of Medical Sciences, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Dept. of Neurosurgery, Shohada Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Dept. of Pathology, Shohada Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran

how to cite: Khaghani Razi Abad S , Pooladi M, Hashemi M, Moradi A, Sobhi S, et al. Rho GDP Protein Expression Change and Investigation of ItsEffect on GDP/GTP Cycle in Human Brain Oligodendroglioma. Int J Cancer Manag. 2013;6(Supplement):e80454. 

Abstract

Background: Oligodendrogliomas are sub-types of Gliomas with an enriched net of branching capillary. A vast amount of Oligodendroglial (approximately 60-90%) demonstrates a loss of 1p and 19q chromosomes, and their response to radio and chemotherapy treatments are considerably more favorable and less aggressive. Rho GDP inhibitor is a protein which controls the activity and distribution of GTPase in cells. In cancer cells with 1pLOH deletion, Rho GDP inhibitor protein can be anti-apoptotic. Here understanding of molecular diagnosis of Oligodendroglioma tumors is investigated via proteomic tools.
Methods: Proteins of tumor and normal brain tissues are extracted and separated by Two-Dimensional Gel (2DG) Electrophoresis method and the spots were then analyzed and compared using statistical data and specific software, after providing 3D images of spots alteration. Spots were identified by pI, molecular weights and data banks.
Results: The 2D gels of normal and patient were provided and compared. As a result,high resolution analysis showed that there are totally 1328 spots in the gel. Bioinformatic analysis of the gels revealed that Rho GDI is one of the downregulated proteins.
Conclusion: It was revealed that Rho GDP inhibitor deactivates GTPProtein complex through disintegration of GTP from Rho proteins, leading to prevention of Rho GDP to return to its cycling.

Fulltext

The Full text is available in PDF.