Dynamics of CD133+ cells in cultures of glioma c6 and fetal rat brain under the neurogenic cells supernatant influence

Abstract

Cellular and molecular similarities between brain tumor stem cells (BTSCs) and normal neurogenic stem cells (NSCs) motivate the search for new methods of treatment of malignant glioma using NSCs. CD133 molecule could be one of the most typical markers of BTSCs and considered as a target for therapy of brain tumors.The aim of this study was to evaluate the effect of rat neurogenic cells supernatant (NCsS) on the content of CD133+ cells in glioma C6 cell cultures.Materials and methods. The cells of rat brain glioma C6 were used as the source for the cultivation; for comparative assessment of tested compound impact on the intact nervous system the fetal rat brain cells on 14th (E14) day of gestation were used. The study was performed in control cultures under standard culture conditions without NCsS adding and tested cultures with adding NCsS (0.10 mg/ml of protein) for 48 hours. NCsS was received from suspensions of rat brain neurogenic cells (E14).Results. CD133-positive cells were 12.05 ± 4.77 % of the total number of cells in C6 glioma culture and 37.36 ± 12.33 % of the total number of cells in fetal rat brain culture. CD133-positive cells had a smaller size than negative cells (average values of cross-sectional area of cells and nucleus) and greater nuclear-cytoplasmic ratio. The cell and nucleus sizes of CD133-positive cells in cell cultures of fetal rat brain were twice larger than sizes of such cells in cultures of glioma C6.Under the conditions of NCsS for 48 hours the reducing in the number of CD133-positive cells in rat glioma C6 cell cultures (2.88 ± 0.41 %) and lack of such effects in cell cultures of fetal rat brain (E14) were found.Conclusion. The morphological differences of CD133-positive cells in glioma C6 cultures and in cell cultures of fetal rat brain (E14) were detected. The decrease of CD133-positive cells in glioma C6 cells culture under the influence of neurogenic cells supernatant was shown.