[The immune cytochemical evaluation of reaction of phytohemagglutinin stimulation of lymphocytes with monoclonal antibodies Ki-67].

The article proposes new (immune cytochemical) mode of evaluation of reaction of blast-cell transformation of human lymphocytes under their stimulation with phytohemagglutinin instead of standard radiometric method using 3H-thymidine as a marker. The reaction was assessed by means of luminescent microscope under indirect immunofluorescence using nuclear antigen Ki-67 as a marker of proliferating cells. The Ki-67 was detected using monoclonal antibodies Ki-67.

[The levels of key nucleolar proteins in the lymphoid cells of healthy individuals and patients with lymphoproliferative diseases].

Immunocytochemical staining with specific antibodies was used to study the expression of three nucleolar proteins (fibrillarin, B23/nucleofozmin, and SURF6), which were involved in pRNA maturation, in the lymphoid cells of healthy individuals and patients with lymphoproliferative diseases and to compare it with the expression of the known proliferation marker Ki-67 protein. The results indicated that fibrillarin was detectable at the comparable level in the lymphoid cells of the patients and in the peripheral blood lymphocytes of the healthy individuals. In one fourth of the patients, the proportion of cells containing B23/nucleofozmin was noticeably higher than that in the lymphocytes of donors; however, there was no great difference in patients with different types of the disease.

[Antibodies to synthetic fragments of nucleophosmin for the specific detection of its monomeric and oligomeric forms].

Immunoactive fragments corresponding to the N-terminal (19-36) and C-terminal (283-294) regions of the NPM1.1 isoform of nucleophosmin and their shortened fragments were chosen and synthesized. Rabbits were immunized with free full-size peptides and their protein conjugates.