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In Vitro Differentiation Model of Human Normal Memory B Cells to Long-lived Plasma Cells
Published on: January 20, 2019
Expression pattern of MRPS18 family genes in malignantly transformed b-cells
1R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, NASU, Kyiv 03022, Ukraine.
Aim:
To compare expression patterns of proteins of a family of mitochondrial ribosomal protein S18 (MRPS18) in tumor cell lines of the B-cell origin.
Materials And Methods:
The study has been performed on different subsets of tonsil B-cells and tumor cell lines of the B-cell origin using quantitative polymerase chain reaction analysis, western blot analysis, immunohistochemistry, bioinformatic analysis of the publicly available data bases on expression.
Results:
We have found that genes of the MRPS18 family (1-3) show different expression patterns in tumor cell lines of the B-cell origin. The highest levels of expression were shown for MRPS18-3, the lowest - for MRPS18-1. MRPS18-2 was expressed at the highest levels in germinal center cells, Burkitt lymphoma and Hodgkin lymphoma cell lines. At the protein levels, MRPS18-2 showed the highest expression in Burkitt lymphoma and B-cell precursor acute lymphoblastic leukemia cell lines. In lymphoblastoid cell lines, and in germinal center B-cells MRPS18-2 levels were somewhat lower, but higher than in memory and plasma B-cells.
Conclusions:
The differential expression pattern of the MRPS18 family proteins suggests that they play various roles in cellular processes.

