title: Analysis of the placental tissue transcriptome of normal and preeclampsia complicated pregnancies.
abstract: Preeclampsia is one of the most severe gestational complications which is one of the leading causes of maternal and perinatal morbidity and mortality. A growth in the incidence of severe and combined forms of the pathology has been observed in recent years. According to modern concepts, inadequate cytotrophoblast invasion into the spiral arteries of the uterus and development of the ischemia-reperfusion syndrome in the placental tissue play the leading role in the development of preeclampsia, which is characterized by multipleorgan failure. In this regard, our work was aimed at studying the patterns of placental tissue transcriptome that are specific to females with PE and with physiological pregnancy, as well as identifying the potential promising biomarkers and molecular mechanisms of this pathology. We have identified 63 genes whose expression proved to differ significantly in the placental tissue of females with PE and with physiological pregnancy. A cluster of differentially expressed genes (DEG) whose expression level is increased in patients with preeclampsia includes not only the known candidate genes that have been identified in many other genome-wide studies (e.g., LEP, BHLHB2, SIGLEC6, RDH13, BCL6), but also new genes (ANKRD37, SYDE1, CYBA, ITGB2, etc.), which can be considered as new biological markers of preeclampsia and are of further interest. The results of a functional annotation of DEG show that the development of preeclampsia may be related to a stress response, immune processes, the regulation of cell-cell interactions, intracellular signaling cascades, etc. In addition, the features of the differential gene expression depending on preeclampsia severity were revealed. We have found evidence of the important role of the molecular mechanisms responsible for the failure of immunological tolerance and initiation of the pro-inflammatory cascade in the development of severe preeclampsia. The results obtained elaborate the concept of the pathophysiology of preeclampsia and contain the information necessary to work out measures for targeted therapy of this disease. ;
authors.affiliation: Research Institute of Medical Genetics, Siberian Branch, Russian Academy of Medical Sciences, Nab. Ushayky 10, 634050, Tomsk, Russia ; Tomsk State University, Lenina Avenue, 36, 634050, Tomsk, Russia.
authors.forename: E A
authors.initials: EA
authors.lastname: Trifonova
authors.affiliation: Siberian State Medical University, Ministry of Health of the Russian Federation, Moskovsky Trakt, 2, 634050, Tomsk, Russia.
authors.forename: T V
authors.initials: TV
authors.lastname: Gabidulina
authors.affiliation: Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Prosp. Lavrentieva 10, 630090, Novosibirsk, Russia.
authors.forename: N I
authors.initials: NI
authors.lastname: Ershov
authors.affiliation: Research Institute of Medical Genetics, Siberian Branch, Russian Academy of Medical Sciences, Nab. Ushayky 10, 634050, Tomsk, Russia.
authors.forename: V N
authors.initials: VN
authors.lastname: Serebrova
authors.affiliation: City Clinical Hospital № 1, Ul. Khitarova, 32, 654000, Novokuznetsk, Russia.
authors.forename: A Yu
authors.initials: AY
authors.lastname: Vorozhishcheva
authors.affiliation: Research Institute of Medical Genetics, Siberian Branch, Russian Academy of Medical Sciences, Nab. Ushayky 10, 634050, Tomsk, Russia ; Tomsk State University, Lenina Avenue, 36, 634050, Tomsk, Russia.
authors.forename: V A
authors.initials: VA
authors.lastname: Stepanov
keywords: gene expression; genome-wide analysis; microarrays; placenta; preeclampsia; transcriptome
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