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  1. Article: Epimorphic Regeneration of Elastic Cartilage: Morphological Study into the Role of Cellular Senescence.

    Valieva, Yana / Igrunkova, Aleksandra / Fayzullin, Alexey / Serejnikova, Natalia / Kurkov, Aleksandr / Fayzullina, Nafisa / Valishina, Dina / Bakulina, Alesia / Timashev, Peter / Shekhter, Anatoly

    Biology

    2023  Volume 12, Issue 4

    Abstract: Control over endogenous reparative mechanisms is the future of regenerative medicine. The rabbit ear defect is a rare model which allows the observation of the epimorphic regeneration of elastic cartilage. However, the mechanisms of phenotypical ... ...

    Abstract Control over endogenous reparative mechanisms is the future of regenerative medicine. The rabbit ear defect is a rare model which allows the observation of the epimorphic regeneration of elastic cartilage. However, the mechanisms of phenotypical restoration of this highly differentiated tissue have not been studied. We modelled circular ear defects of different sizes (4, 6, and 8 mm in diameter) in 12 laboratory rabbits, and observed them during 30, 60, 90, and 120 day periods. Excised tissues were processed and analyzed by standard histological methods and special histochemical reactions for senescence associated-β-galactosidase and lectin markers. We demonstrated that larger defects caused significant elevation of senescence associated-β-galactosidase in chondrocytes. The fullness of epimorphic regeneration of elastic cartilage depended on the activation of cellular senescence and synthesis of elastic fibers. Further investigation into the role of cells with senescence-associated secretory phenotype in damaged tissues can present new targets for controlled tissue regeneration.
    Language English
    Publishing date 2023-04-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661517-4
    ISSN 2079-7737
    ISSN 2079-7737
    DOI 10.3390/biology12040565
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Epimorphic Regeneration of Elastic Cartilage: Morphological Study into the Role of Cellular Senescence

    Valieva, Yana / Igrunkova, Aleksandra / Fayzullin, Alexey / Serejnikova, Natalia / Kurkov, Aleksandr / Fayzullina, Nafisa / Valishina, Dina / Bakulina, Alesia / Timashev, Peter / Shekhter, Anatoly

    Biology (Basel). 2023 Apr. 07, v. 12, no. 4

    2023  

    Abstract: Control over endogenous reparative mechanisms is the future of regenerative medicine. The rabbit ear defect is a rare model which allows the observation of the epimorphic regeneration of elastic cartilage. However, the mechanisms of phenotypical ... ...

    Abstract Control over endogenous reparative mechanisms is the future of regenerative medicine. The rabbit ear defect is a rare model which allows the observation of the epimorphic regeneration of elastic cartilage. However, the mechanisms of phenotypical restoration of this highly differentiated tissue have not been studied. We modelled circular ear defects of different sizes (4, 6, and 8 mm in diameter) in 12 laboratory rabbits, and observed them during 30, 60, 90, and 120 day periods. Excised tissues were processed and analyzed by standard histological methods and special histochemical reactions for senescence associated-β-galactosidase and lectin markers. We demonstrated that larger defects caused significant elevation of senescence associated-β-galactosidase in chondrocytes. The fullness of epimorphic regeneration of elastic cartilage depended on the activation of cellular senescence and synthesis of elastic fibers. Further investigation into the role of cells with senescence-associated secretory phenotype in damaged tissues can present new targets for controlled tissue regeneration.
    Keywords cartilage ; cell senescence ; chondrocytes ; ears ; histology ; lectins ; medicine ; models ; phenotype ; rabbits ; tissue repair
    Language English
    Dates of publication 2023-0407
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2661517-4
    ISSN 2079-7737
    ISSN 2079-7737
    DOI 10.3390/biology12040565
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Carbonic Anhydrase Inhibitors Induce Ferroptosis through Inhibition of AKT/FTH1 Signaling in Ewing Sarcoma Tumor Cells.

    Fayzullina, Darya / Yakushov, Semyon / Kantserova, Kamilla / Belyaeva, Elizaveta / Aniskin, Denis / Tsibulnikov, Sergey / Fayzullina, Nafisa / Kalinin, Stanislav / Romantsova, Olga / Timashev, Peter S / Schroeder, Brett A / Ulasov, Ilya V

    Cancers

    2023  Volume 15, Issue 21

    Abstract: Ewing sarcoma (ES) is one of the most frequent types of malignant tumors among children. The active metabolic state of ES cells presents a new potential target for therapeutic interventions. As a primary regulator of cellular homeostasis, carbonic ... ...

    Abstract Ewing sarcoma (ES) is one of the most frequent types of malignant tumors among children. The active metabolic state of ES cells presents a new potential target for therapeutic interventions. As a primary regulator of cellular homeostasis, carbonic anhydrases (CAs; EC 4.2.1.1) have emerged as promising molecular targets for the development of anticancer drugs. Within the present study, we tested the commercial drug acetazolamide and our previously discovered inhibitors to target the CAII isoform, which was overexpressed and positively correlated with ES patient relapse. We employed molecular biology tests to identify effective inhibitors of CAII that can induce ferroptosis by downregulating FTH1 expression in ES cells. In vitro, we have also demonstrated their ability to reduce cell proliferation, decrease invasion, and induce apoptosis- or autophagy-related cell death. Using Western blotting, we confirmed the induction of cathepsin B in cells treated with CA inhibitors. It was found that the suppression of cathepsin B expression during the treatment reduces the anticancer efficacy of selected CAII inhibitors. These experiments highlighted profound antitumor activity of CAII inhibitors attributive to their remarkable ability to trigger ferroptosis in Ewing sarcoma cells without causing substantial host damage. The obtained results suggest that cytosolic CAII may be a prospective target for ES treatment, and CAII inhibitors can be considered as potential single-agent or combination antitumor agents to be used in the treatment of ES.
    Language English
    Publishing date 2023-10-31
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers15215225
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Epithelial apical glycosylation changes associated with thin endometrium in women with infertility - a pilot observational study.

    Ziganshina, Marina M / Dolgushina, Nataliya V / Kulikova, Galina V / Fayzullina, Nafisa M / Yarotskaya, Ekaterina L / Khasbiullina, Nailia R / Abdurakhmanova, Nigora F / Asaturova, Aleksandra V / Shchegolev, Alexander I / Dovgan, Alina A / Sukhikh, Gennady T

    Reproductive biology and endocrinology : RB&E

    2021  Volume 19, Issue 1, Page(s) 73

    Abstract: Background: Low endometrial receptivity is one of the major factors affecting successful implantation in assisted reproductive technologies (ART). Infertile patients with thin endometrium have a significantly lower cumulative clinical pregnancy rate ... ...

    Abstract Background: Low endometrial receptivity is one of the major factors affecting successful implantation in assisted reproductive technologies (ART). Infertile patients with thin endometrium have a significantly lower cumulative clinical pregnancy rate than patients with normal endometrium. Molecular pathophysiology of low receptivity of thin endometrium remains understudied. We have investigated composition of glycocalyx of the apical surface of luminal and glandular epithelial cells in thin endometrium of infertile women.
    Methods: Thirty-two patients with tubal-peritoneal infertility undergoing in vitro fertilization (IVF) were included in the study. Endometrial samples were obtained in a natural menstrual cycle. Patients were divided into two groups: patients with normal endometrium (≥8 mm) and with thin endometrium (< 8 mm). Histochemical and immunohistochemical analysis of paraffin-embedded endometrial samples was performed using six biotinylated lectins (UEA-I, MAL-II, SNA, VVL, ECL, Con A) and anti-Le
    Results: Complex glycans analysis taking into account the adjusted specificity of glycan-binding MAbs revealed 1.3 times less expression of MECA-79 glycans on the apical surface of the luminal epithelial cells of thin endometrium compared to normal endometrium; this deficiency may adversely affect implantation, since MECA-79 glycans are a ligand of L-selectin and mediate intercellular interactions. The glycans containing a type-2 unit Galβ1-4GlcNAcβ (LacNAc) but lacking sulfo-residues at 6-OH of GlcNAcβ, and binding to MECA-79 MAbs were found; they can be considered as potential markers of endometrium receptivity. Expression of the lectins-stained glycans on the apical surfaces of the luminal and glandular epithelial cells did not differ significantly. Correlation between the expression of difucosylated oligosaccharide Le
    Conclusions: Specific features of key glycans expression in epithelial compartments of thin endometrium may be essential for morphogenesis of the endometrial functional layer and explain its low receptivity.
    MeSH term(s) Adult ; Antibodies, Monoclonal/immunology ; Carbohydrate Sequence ; Cell Polarity ; Embryo Implantation ; Embryo Transfer ; Endometrium/pathology ; Epithelial Cells/metabolism ; Epithelial Cells/ultrastructure ; Female ; Fertilization in Vitro ; Glycocalyx/chemistry ; Glycosylation ; Humans ; Infertility, Female/metabolism ; Infertility, Female/pathology ; Microarray Analysis ; Morphogenesis ; Pilot Projects ; Polysaccharides/analysis ; Polysaccharides/immunology
    Chemical Substances Antibodies, Monoclonal ; Polysaccharides
    Language English
    Publishing date 2021-05-15
    Publishing country England
    Document type Journal Article ; Observational Study
    ZDB-ID 2119215-7
    ISSN 1477-7827 ; 1477-7827
    ISSN (online) 1477-7827
    ISSN 1477-7827
    DOI 10.1186/s12958-021-00750-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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