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Mitochondrial role in adaptive response to stress conditions in preeclampsia
Scientific Reports. 2016. No. 6. P. 1–9.
Vishnyakova P., Volodina Maria, Tarassova N., Marey M., Tsvirkun D., Vavina O., Khodjaeva Z., Kan N., Menon R., Vysokikh M., Sukhikh G.
Preeclampsia (PE) is a pregnancy-specific syndrome, characterized in general by hypertension with proteinuria or other systemic disturbances. PE is the major cause of maternal and fetal morbidity and mortality worldwide. However, the etiology of PE still remains unclear. Our study involved 38 patients: 14 with uncomplicated pregnancy; 13 with early-onset PE (eoPE); and 11 with late-onset PE (loPE). We characterized the immunophenotype of cells isolated from the placenta and all biopsy samples were stained positive for Cytokeratin 7, SOX2, Nestin, Vimentin, and CD44. We obtained a significant increase in OPA1 mRNA and protein expression in the eoPE placentas. Moreover, TFAM expression was down-regulated in comparison to the control (p < 0.01). Mitochondrial DNA copy number in eoPE placentas was significantly higher than in samples from normal pregnancies. We observed an increase of maximum coupled state 3 respiration rate in mitochondria isolated from the placenta in the presence of complex I substrates in the eoPE group and an increase of P/O ratio, citrate synthase activity and decrease of Ca(2+)-induced depolarization rate in both PE groups. Our results suggest an essential role of mitochondrial activity changes in an adaptive response to the development of PE.
Temereva E., Zoologischer Anzeiger 2026 Vol. 325 P. 182–195
Brachiopoda is a group of animals, that is still insufficiently studied at the ultrastructural level, despite the significance of ultrastructure of tissues and organs for analysing the functional morphology, reconstructing the organisation and biology of numerous extinct brachiopods, and establishing relationships among major taxa. In the present study, we provide a revised reconstruction of the ...
Added: October 11, 2026
Korotkova E., Kulikova S., Lvova O. et al., Pediatric Radiology 2026 P. 1–9
Background
Predicted brain age is a widely used neuroimaging biomarker of brain maturation. However, limited normative pediatric datasets in model training raise concerns about systematic biases when applied to children. This study evaluates the hypothesis of predicted brain age overestimation in typically developing pediatric populations.
Objective
To analyze predicted brain age and brain delta in a large, age- ...
Added: October 3, 2026
Ekaterina D. Riumina, Klink G. V., Alekseeva E. et al., PNAS, США 2026 Vol. 123 No. 35 P. 1–20
The role of escape from the cytotoxic T cell (CTL) response in SARS-CoV-2 evolution remains controversial. Here, we study the origin and spread of SARS-CoV-2 variants whose mutations reduce presentation by the HLA class I alleles common in human populations. We find that 35% of mutations that are characteristic of the variants of concern, and ...
Added: October 2, 2026
Aly Ismailov, Poptsova M., Plos One 2026 Vol. 21 No. 9 Article e0355902
Added: October 2, 2026
Knyazev E., Чеботарева О. Е., М.: Издательский дом НИУ ВШЭ, 2026.
This teaching and learning guide provides a concise overview of the theoretical and practical aspects of the basic skills required to work in a biological laboratory. It also includes protocols for practical classes conducted as part of the introductory professional training placement for first-year students in the Bachelor’s programme in Cell and Molecular Biotechnology at ...
Added: September 30, 2026
Ryskina H., Knyazev E., Вопросы биологической, медицинской и фармацевтической химии 2026 Т. 29 № 9 С. 84–91
Introduction. The active integration of rapidly developing omics and computer technologies in the 21st century has led to a breakthrough in understanding the principles of the functioning of living systems. One of the dynamically developing integrative areas in biology is biological modeling. The fundamental paradigm has been the methodology that allows for the prediction of ...
Added: September 29, 2026
Gureev M., Advanced Science 2026 P. 1–13
Targeted protein degradation represents a promising therapeutic strategy, yet its broader application is often limited by the scarcity of usable E3 ligases. Glutathione peroxidase 4 (GPX4) is a key target for inducing ferroptosis, but achieving sustained and potent inhibition remains challenging with conventional enzymatic inhibitors. Herein, we report the first small‐molecule GPX4 degraders that incorporate ...
Added: September 26, 2026
Diachkova E., Nikulin D., Кубкин Я. В. et al., American Journal of Respiratory and Critical Care Medicine 2026 Vol. 212
Accurate classification of a patient with pulmonary hypertension (PH) into one of five groups is fundamental for appropriate disease management strategies. The time from disease onset to correct diagnosis is unacceptably long in many cases. Chronic thromboembolic pulmonary hypertension (CTEPH) develops as a consequence of venous thromboemboli, resulting in a more pronounced hereditary predisposition to ...
Added: September 23, 2026
Xu Y., Ryabov F., Alexandrov I. et al., USA 2026 Vol. 6 No. 8 Article 101324
Центромеры обеспечивают расхождение хромосом, однако организацию их хроматина в пределах повторяющейся альфа-сателлитной ДНК долгое время было трудно изучать. Для решения этой задачи мы создали гаплотип-разрешённые аннотации сателлитной ДНК для полной диплоидной сборки генома человека T2T-HG002. Затем с помощью метода направленного метилирования с секвенированием длинных прочтений (DiMeLo-seq) мы картировали центромерный белок A (CENP-A), модификацию H3K9me3 и ...
Added: September 23, 2026
Hebbar P., Ryabov F., Alexandrov I. et al., Cell 2026 Vol. 189 P. 4891–4908.e12
The common marmoset is a New World monkey widely used to study primate evolution and human disease. We present a telomere-to-telomere (T2T) reference assembly for the species, plus three near-T2T haplotypes. These resolve previously inaccessible regions, including the centromeres, sex chromosomes, subterminal satellites, acrocentric chromosomes, and the major histocompatibility complex (MHC). We find marmoset centromeres ...
Added: September 23, 2026
Shaitan A., Ke Y., Shutao C. et al., 2026 No. 24 Article 181
Background Therapeutic peptides exert pivotal effects in diverse biological processes, and have attracted significant interest in the field of biomedicine in recent years. However, most existing methods often fail to adequately capture the intricate interactions among amino acid residues and the contextual dependencies within peptide sequences, which hampers the extraction of deep semantic representations and ...
Added: September 18, 2026
Anton Rogachev, Sysoeva O., Frontiers in Systems Neuroscience 2025 Vol. 19 Article 1658243
Added: September 17, 2026
Anton Rogachev, Sysoeva O., Cognitive Systems Research 2024 Vol. 86 Article 101236
Receptive speech is the ability to understand speech addressed to a person. It is a crucial process for a child’s cognitive development. We examine the relationship between receptive speech and neural tracking of natural speech in 52 children aged 3–8 years to infer the neurophysiological mechanisms underlying speech development. We registered a 32-channel electroencephalogram (EEG) ...
Added: September 17, 2026
Чеботарева О. Е., Пирогов А. А., Antipenko I. et al., Доклады российской академии наук. Науки о жизни 2026 Т. 529 № 1 С. 389–395
Preeclampsia (PE) is a severe obstetric complication caused by chronic placental ischaemia. Genome-wide profiling of microRNA isoforms in two trophoblast hypoxia models (CoCl2 and the oxyquinoline derivative neuradapt, BeWo b30 cells) and clinical PE samples (placental tissue, syncytiotrophoblast vesicles) revealed concordant downregulation of hsa-miR-143-3p isoforms. Under a strict fold-change threshold, the canonical isoform (21 nt) ...
Added: September 16, 2026
Poddiakov A., / Series Social Science Research Network "Social Science Research Network". 2026. No. 7437658.
Clarity of knowledge and reasoning is necessary in many cases. Yet vagueness in scientific thinking related to surprise, curiosity, "ability to engage with not-knowing" (de Freitas) and abductive reasoning is also a crucially important source of scientific creativity which supplements combinatorial logic when dealing with the already known. Starting from studies by C. S. Peirce ...
Added: September 15, 2026
Bug D. S., Kuzovenkova D. A., Tishkov A. V. et al., Biochemical Genetics 2026
Deciphering the evolutionary history of genes is foundational for biomedical research, enabling the identification of compensatory mutations in disease-associated genes and the selection of evolutionarily relevant model organisms. However, challenges of multi-isoform handling, the presence of incomplete genomes/proteomes initial datasets, and problems of evolutionary history representation are still present. To address these issues, we introduce ...
Added: September 14, 2026
Knyazev E., Timur Kulagin, Antipenko I. et al., Placenta 2026 Vol. 176 P. 1–12
Background. Preeclampsia (PE) complicates 2–8% of pregnancies and involves placental hypoxia and HIF-pathway activation, especially in early-onset PE (eoPE). Chemical mimetics like cobalt(II) chloride (CoCl2) and oxyquinoline derivatives model trophoblast hypoxia in vitro, yet their fidelity in recapitulating PE gene profiles remains unclear. Integrating patient tissue analyses with experimental models may reveal common markers and ...
Added: December 22, 2025
Antipenko I., Knyazev E., Timur Kulagin et al., Frontiers in Molecular Biosciences 2025 Vol. 12 Article 1731126
Preeclampsia is a leading cause of maternal and perinatal morbidity associated with systemic lipid metabolism disturbances, yet the underlying molecular mechanisms remain incompletely understood. In this study, we integrated single-cell RNA-seq data from preeclamptic placentas with an in vitro hypoxia model to analyze gene expression changes across distinct trophoblast subpopulations. While all trophoblast lineages exhibited ...
Added: December 2, 2025
Вишнякова П. А., Киселева В. В., Полтавец А. С. et al., Вестник Российского университета дружбы народов. Серия: Медицина 2025 Т. 29 № 3 С. 335–352
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 ...
Added: September 12, 2025
Popova A., Neverov A. D., PLoS Genetics 2021
The mode and rate of evolution of a protein site depends on the effect of its mutations on protein fitness. The fitness effect of a mutation itself can change in the course of evolution for at least two reasons. First, it can be modulated by substitutions occurring at other sites, a phenomenon called epistasis. Second, ...
Added: June 9, 2025
Silkina M., Razumovskaya A., Timur Kulagin et al., Biochimie 2025 Vol. 234 P. 48–61
Breast cancer remains a major challenge and new therapeutic approaches are needed for its treatment. Ferroptosis is considered a promising alternative cell death mechanism to eliminate resistant cancer cells. In previous works, we identified that lower IGFBP6 gene expression in tumor tissue corresponds to a worse prognosis for breast cancer patients and, at the same, time makes ...
Added: April 9, 2025
Knyazev E., Vishnyakova P., Lazareva O. et al., Biochip Journal 2025 Vol. 19 P. 1–21
Preeclampsia is a complex pregnancy disorder marked by hypertension and proteinuria, often resulting in significant maternal and fetal morbidity and mortality. Understanding its pathogenesis is crucial for developing effective diagnostic and therapeutic strategies. Given the placenta’s central role in preeclampsia, it remains a focal point for research. This review offers a comprehensive overview of current ...
Added: December 16, 2024
Vishnyakova P., Gantsova E., Kiseleva V. et al., Placenta 2024 Vol. 145 P. 151–161
Introduction
The role of the TGFβ signaling pathway, an important cascade responsible for the anti-inflammatory polarization of macrophages, in the development of both early- and late-onset preeclampsia (eoPE and loPE), remains poorly understood. In this study, we examined the components of the TGFβ signaling cascade and macrophage markers within placental tissue in normal pregnancy and in ...
Added: December 8, 2023
Vyssokikh M., Holtze S., Averina O. et al., Proceedings of the National Academy of Sciences of the United States of America 2020 Vol. 117 No. 12 P. 6491–6501
The mitochondria of various tissues from mice, naked mole rats (NMRs), and bats possess two mechanistically similar systems to prevent the generation of mitochondrial reactive oxygen species (mROS): hexokinases I and II and creatine kinase bound to mitochondrial membranes. Both systems operate in a manner such that one of the kinase substrates (mitochondrial ATP) is ...
Added: December 10, 2022