Expression of immune-associated genes in isolated classical monocytes in preeclampsia

Relevance. Preeclampsia is a severe complication of pregnancy, occurring in 8 % of cases and causing high maternal and perinatal mortality and morbidity. The etiology of preeclampsia is still a subject of research; however, more and more data indicate the involvement of innate immune cells, monocytes, in the pathogenesis of this dangerous pathology. The aim of our work was to study the expression of a number of immune-­associated genes in classical blood monocytes in preeclampsia and physiological pregnancy. Materials and Methods. The work used the methods of gradient centrifugation, magnetic sorting, cytometric analysis, real-time PCR. Results and Discussion. For the first time, an increase in the expression of the pseudogene of the adhesion receptor coupled to the G protein, ADGRE4P, in classical monocytes in preeclampsia is described. A significantly low relative level of expression of the interleukin 8 gene — CXCL8 — in preeclampsia was also revealed. Сonclusion. The role of individual monocytic subpopulations in the development of preeclampsia is still being clarified. It is obvious that monocytes can change the cytokine profile of blood plasma of patients with preeclampsia, enhance the reactions of innate immunity, including inflammation. The chemokine IL8 and the gene encoding it, as well as the pseudogene of the adhesion receptor, can become a potential therapeutic target in the treatment of this dangerous gestational pathology.