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ИЗМЕНЕНИЕ ЭКСПРЕССИИ ИЗОФОРМ МИКРОРНК И ИХ МИШЕНЕЙ ПРИ ГИПОКСИИ В КЛЕТКАХ HT-29
Клеточные технологии в биологии и медицине. 2022. № 1. С. 14–18.
Tumor hypoxia is one of the main reasons of progression and metastasis of colorectal cancer. The important molecular mechanism of cell response to hypoxia consists in up- or down-regulation of microRNA expression. In this work we performed microRNA and mRNA sequencing of human colorectal adenocarcinoma HT-29 cell lines treated with two chemical agents mimicking hypoxia: cobalt (II) chloride and oxyquinoline. Bioinformatics analysis of the obtained data revealed differentially expressed isomiRs (hsa-miR-210-3p|0, hsa-miR-22-3p|0, hsa-let-7a-3p|0, hsa-miR-615-3p|0, hsa-miR-4521|0) and their targets, which changed their expression upon hypoxia induction by both treatments. Thus, we identified new regulatory mechanisms of cellular response to hypoxia.
Nersisyan A., Frontiers in Molecular Biosciences 2026 Vol. 13 Article 1995001
Antiviral activity is commonly summarized using endpoint measures such as EC50 or EC90, yet these quantities emerge from a dynamic biological system and depend on viral replication kinetics, host-cell properties, experimental design, and the assay used to quantify infection. Infectious-virus titers, viral RNA, infected-cell fractions, viability measurements, and immune readouts capture different components of the ...
Added: October 15, 2026
Батова О. Н., Савинецкая Л. Е., Проявка С. В. et al., Nature Conservation Research. Заповедная наука 2026 Т. 11 № 4 С. 25–39
Spermophilus suslicus is a threatened species listed in Red Data Books at all levels (from regional Red Data
Books to the IUCN Red List of Threatened Species), and it currently requires special conservation activity.
Over the past 30–50 years, its range has changed from continuous to mosaic, and its population has declined
everywhere. In 2015, in Russia experimental ...
Added: October 13, 2026
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
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
Lin Z., Duan K., Wan R. et al., 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
Ок. Е. Колодеева, Ол. Е. Колодеева, Биотехнология 2025 Т. 41 № 6 С. 64–71
A three-dimensional (3D) matrix consisting of collagen fibers can create culture conditions that are more similar to in vivo tissues than 2D cultures in in vitro culture plates. Macrophages are among the most important innate immune cells. They are extremely plastic, allowing them to respond effectively to pro- and anti-inflammatory signals within their microenvironment. There ...
Added: December 24, 2025
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
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
Everest-Dass A., Nersisyan S., Maar H. et al., Molecular Oncology 2024 Vol. 18 No. 1 P. 62–90
Hematogenous metastasis limits the survival of colorectal cancer (CRC) patients. Here, we illuminated the roles of CD44 isoforms in this process. Isoforms 3 and 4 were predominantly expressed in CRC patients. CD44 isoform 4 indicated poor outcome and correlated with epithelial-mesenchymal transition (EMT) and decreased oxidative phosphorylation in patients; opposite associations were found for isoform 3. Pan-CD44 ...
Added: November 1, 2023
Nersisyan S., Zhiyanov A., Еngibaryan N. et al., Frontiers in Genetics 2022 Vol. 13 Article 1070528
A widely used procedure for selecting significant miRNA-mRNA or isomiR-mRNA pairs out of predicted interactions involves calculating the correlation between expression levels of miRNAs/isomiRs and mRNAs in a series of samples. In this manuscript, we aimed to assess the validity of this procedure by comparing isomiR-mRNA correlation profiles in sets of sequence-based predicted target mRNAs ...
Added: December 1, 2022
Nersisyan S., Вестник Российского государственного медицинского университета 2022 Т. 3 С. 20–26
MicroRNAs are short non-coding molecules which regulate translation in a gene-specific manner. MicroRNA isoforms that differ by few extra or missing nucleotides at the 5'-terminus (5'-isomiR) show strikingly different target specificity. This study aimed to identify functional roles of 5′-isomiR in colorectal cancers. Transcriptomic targets of microRNA isoforms were predicted using bioinformatics tools miRDB and ...
Added: November 23, 2022
Хушпульян Д. М., Nikulin S., Христиченко А. Ю. et al., Вестник Московского университета. Серия 2: Химия 2021 Т. 62 № 3 С. 213–222
The attempts to elucidate the mechanism of hypoxic activation of erythropoietin synthesis let to the
discovery of hypoxia inducible factor (HIF) and its stability regulation via HIF prolyl hydroxylase, iron
and α-ketoglutarate dependent dioxygenase. Enzyme inhibitors mimic the action of hypoxia, however, are
far more specific. Comparative transcriptomic microanalysis of various types on the enzyme inhibitors
with hypoxia at ...
Added: December 20, 2021