ФЕНОТИПОВІ ТА МОРФОЛОГІЧНІ ЗМІНИ КУЛЬТУРИ КЛІТИН КІСТКОВОГО МОЗКУ ЩУРІВ В ПРОЦЕСІ ЇХ КУЛЬТИВУВАННЯ

Bone marrow is the only adult tissue which normally consists of immature undifferentiated and low differentiated cells which called stem cells and they are similar in structure to embryonic stem cells. But literature data analysis doesn't give an unambiguous answer regarding phenotypic and morphological changes of bone marrow cells culture of rats during their in vitro cultivation which necessitated further research. Investigate phenotypic and morphological changes of bone marrow cells culture of rats during their in vitro cultivation from first to fourth passage. We were used in these research bone marrow cells of rats from the first to the fourth passages. Microscopic analysis and evaluation morphological changes of bone marrow cells culture of rats during cultivation were carried out using inverted microscope Axiovert 40. Control of changes phenotype was performed by detecting CD markers (CD10, CD38, CD34, CD45, CD48, CD54, CD56, CD66e, CD96, CD227, CD326, pan–keratin). The evaluation was performed by the semi– quantitative method (H–Score). The research of primary culture of rat bone marrow cells showed that it morphologically heterogeneous, noted the small number of cells polygonal shape, surrounded by the fibroblast cells. During the cultivation cell culture becomes more homogenous at the expense of fibroblast–like cells. As a result of occurred the transition process from heterogeneous culture in zero passage to the most homogeneous culture in 4 passage. Immunophenotyping population of cell culture derived from rat bone marrow, revealed a high level of expression of pan–keratin; moderate level – CD34, CD48, CD66e, CD95; low level – CD38, CD45, CD56, CD227, CD326; lack of expression – CD10, CD54. Change of the expression of surface markers varies in each passage CD48, CD66e, CD95 increased significantly; CD38, SD45, SD326, pan–keratin reduced significantly. The markers CD34, CD 56, CD 227 were expressed on the one level from the first to the fourth passage. The expression of the CD10, CD54 markers during the study period was not identified.