Study of the effect of curcumin on excision DNA repair in U251 glioblastoma multiforme cells

Abstract

Introduction. To a large extent, the resistance of glioblastoma multiforme to genotoxic therapy is associated with a dysregulation of responses to DNA damage and repair. Thus, suppression of DNA repair mechanisms is a priority pathway for increasing the survival rate of glioblastoma multiforme patients. Curcumin enhances the effectiveness of standard chemotherapy drugs, but its effect on DNA repair systems is not well understood.The study objective – to study the molecular mechanisms of curcumin action on excisional DNA repair in U251 glioblastoma multiforme cells.Materials and methods. high-resolution proteomic mass spectrometry, cell technologies.Results. In the proteomes of two types of glioblastoma multiforme cells (control and experiment), a total of 2757 proteins were identified, of which 39 % were differentially expressed. Significant changes have been found in many signaling cascades that play an important role in carcinogenesis.Conclusion. Curcumin suppressed excisional DNA repair by decreasing the expression of determinants APEX1, MSH6, PARP1. PCNA, POLD1, POLE3, RFC2, RPA.

Keywords

• мультиформная глиобластома
• куркумин
• протеом
• эксцизионная репарация днк
• масс-спектрометрия