1
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Mandal D, Datta S, Mitra S, Nag Chaudhuri R. ABSCISIC ACID INSENSITIVE 3 promotes auxin signalling by regulating SHY2 expression to control primary root growth in response to dehydration stress. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:5111-5129. [PMID: 38770693 DOI: 10.1093/jxb/erae237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 05/20/2024] [Indexed: 05/22/2024]
Abstract
Plants combat dehydration stress through different strategies including root architectural changes. Here we show that when exposed to varying levels of dehydration stress, primary root growth in Arabidopsis is modulated by regulating root meristem activity. Abscisic acid (ABA) in concert with auxin signalling adjust primary root growth according to stress levels. ABSCISIC ACID INSENSITIVE 3 (ABI3), an ABA-responsive transcription factor, stands at the intersection of ABA and auxin signalling and fine-tunes primary root growth in response to dehydration stress. Under low ABA or dehydration stress, induction of ABI3 expression promotes auxin signalling by decreasing expression of SHY2, a negative regulator of auxin response. This further enhances the expression of auxin transporter gene PIN1 and cell cycle gene CYCB1;1, resulting in an increase in primary root meristem size and root length. Higher levels of dehydration stress or ABA repress ABI3 expression and promote ABSCISIC ACID INSENSITIVE 5 (ABI5) expression. This elevates SHY2 expression, thereby impairing primary root meristem activity and retarding root growth. Notably, ABI5 can promote SHY2 expression only in the absence of ABI3. Such ABA concentration-dependent expression of ABI3 therefore functions as a regulatory sensor of dehydration stress levels and orchestrates primary root growth by coordinating its downstream regulation.
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Affiliation(s)
- Drishti Mandal
- Department of Biotechnology, St Xavier's College, 30, Mother Teresa Sarani, Kolkata-700016, India
| | - Saptarshi Datta
- Department of Biotechnology, St Xavier's College, 30, Mother Teresa Sarani, Kolkata-700016, India
| | - Sicon Mitra
- Department of Biotechnology, St Xavier's College, 30, Mother Teresa Sarani, Kolkata-700016, India
| | - Ronita Nag Chaudhuri
- Department of Biotechnology, St Xavier's College, 30, Mother Teresa Sarani, Kolkata-700016, India
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2
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Tantisuwanichkul K, Komaki S, Watanabe M, Tohge T, Sirikantaramas S. Unveiling the regulatory role of DzAGL6-1 in carotenoid biosynthesis during durian (Durio zibethinus) fruit development. PLANT CELL REPORTS 2024; 43:217. [PMID: 39153055 DOI: 10.1007/s00299-024-03302-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Accepted: 07/29/2024] [Indexed: 08/19/2024]
Abstract
KEY MESSAGE Approximately 119 MADS-box genes have been identified in durian. Moreover, DzAGL6-1 primarily expressed during fruit development, activates the DzPSY promoter. Transient expression of DzAGL6-1 in tomatoes influences carotenoid production. MADS-box transcription factors play a crucial role in regulating plant biological processes, including fruit ripening and associated events. This study aimed to comprehend the mechanisms involved in durian fruit development and ripening and carotenoid production by conducting a genome-wide analysis of MADS-box proteins in durian (Durio zibethinus L.), an economically important fruit in Southeast Asia. A total of 119 durian MADS-box proteins were identified from the genome of the 'Musang King' cultivar. Based on the phylogenetic analysis, the proteins were classified into types I and II, which exhibited similar conserved motif compositions. Notably, only 16 durian MADS-box genes exhibited fruit-specific expression patterns. Among these genes, DzAGL6-1 was predominantly expressed during fruit development, a stage at which carotenoid biosynthesis is activated. Transient expression of DzAGL6-1 in tomato fruit increased the transcript level of the carotenoid biosynthetic gene phytoene synthase (PSY) and the β-carotene content. Furthermore, DzAGL6-1 activated the promoter activity of DzPSY, as demonstrated by a dual-luciferase assay. These findings provide insights into the role of MADS-box transcription factors in regulating carotenoid biosynthesis during durian fruit development.
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Affiliation(s)
- Kittiya Tantisuwanichkul
- Center of Excellence in Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Shinichiro Komaki
- Plant Secondary Metabolism, Division of Biological Science, NARA Institute of Science and Technology, Nara, Japan
| | - Mutsumi Watanabe
- Plant Secondary Metabolism, Division of Biological Science, NARA Institute of Science and Technology, Nara, Japan
| | - Takayuki Tohge
- Plant Secondary Metabolism, Division of Biological Science, NARA Institute of Science and Technology, Nara, Japan
| | - Supaart Sirikantaramas
- Center of Excellence in Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
- Omics Sciences and Bioinformatics Center, Chulalongkorn University, Bangkok, Thailand.
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3
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Schiffers C, Serbetci I, Mense K, Kassens A, Grothmann H, Sommer M, Hoeflich C, Hoeflich A, Bollwein H, Schmicke M. Association between IGF-1 and IGFBPs in Blood and Follicular Fluid in Dairy Cows Under Field Conditions. Animals (Basel) 2024; 14:2370. [PMID: 39199904 PMCID: PMC11350739 DOI: 10.3390/ani14162370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/12/2024] [Accepted: 08/14/2024] [Indexed: 09/01/2024] Open
Abstract
Insulin-like growth factor 1 (IGF-1) regulates dairy cow reproduction, while the paracrine IGF system locally influences fertility. In both systems, IGF-1 bioactivity is regulated through binding proteins (IGFBPs) inhibiting IGF-1 binding to its receptor (IGF1R). This study aimed to investigate a possible transfer between this endocrine and paracrine system. Therefore, blood and follicular fluid (FF) from postpartum dairy cows were analysed for ß-hydroxybutyrate (BHB), IGF-1, IGFBP-2, -3, -4, -5, and an IGFBP fragment in two study parts. The mRNA expression of IGFBP-2, IGFBP-4, IGF1R, and the pregnancy-associated plasma protein A (PAPP-A) in granulosa cells was measured. The results showed correlations between plasma and FF for IGF-1 (r = 0.57, p < 0.001) and IGFBP-2 (r = -0.57, p < 0.05). Blood BHB negatively correlated with IGF-1 in blood and FF and IGFBP-3, -5 and total IGFBP in blood (IGF-1 plasma: r = -0.26, p < 0.05; FF: r = -0.35, p < 0.05; IGFBP-3: r = -0.64, p = 0.006; IGFBP-5: r = -0.49, p < 0.05; total IGFBP: r = -0.52, p < 0.05). A negative correlation was found between IGFBP-2 expression and IGF-1 concentration in FF (r = -0.97, p = 0.001), while an IGFBP fragment positively correlated with IGF1R-mRNA in FF (r = 0.82, p = 0.042). These findings suggest a transfer and local regulation between the somatotropic axis and the follicular IGF system, linking the metabolic status with local effects on dairy cow fertility.
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Affiliation(s)
- Christina Schiffers
- Veterinary-Endocrinology and Laboratory Diagnostics, Clinic for Cattle, University of Veterinary Medicine Hannover, Foundation, 30173 Hannover, Germany;
| | - Idil Serbetci
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (I.S.); (H.B.)
| | - Kirsten Mense
- SYNETICS Germany GmbH, 27283 Verden, Germany; (K.M.); (A.K.); (H.G.)
| | - Ana Kassens
- SYNETICS Germany GmbH, 27283 Verden, Germany; (K.M.); (A.K.); (H.G.)
| | - Hanna Grothmann
- SYNETICS Germany GmbH, 27283 Verden, Germany; (K.M.); (A.K.); (H.G.)
| | | | | | - Andreas Hoeflich
- Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany;
| | - Heinrich Bollwein
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland; (I.S.); (H.B.)
| | - Marion Schmicke
- Veterinary-Endocrinology and Laboratory Diagnostics, Clinic for Cattle, University of Veterinary Medicine Hannover, Foundation, 30173 Hannover, Germany;
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4
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Méndez LR, Soto-Dávila M, Wong-Benito V, Rodríguez-Ramos T, Carpio Y, Estrada MP, Dixon B. PACAP binds conserved receptors and modulates cytokine gene expression and protein secretion in trout cell lines. FISH & SHELLFISH IMMUNOLOGY 2024; 151:109738. [PMID: 38971350 DOI: 10.1016/j.fsi.2024.109738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 06/27/2024] [Accepted: 06/30/2024] [Indexed: 07/08/2024]
Abstract
Antimicrobial peptides (AMPs) are an alternative to antibiotics for treatment and prevention of infections with a lower risk of bacterial resistance. Pituitary adenylate cyclase activating polypeptide (PACAP) is an outstanding AMP with versatile effects including antimicrobial activity and modulation of immune responses. The objective of this research was to study PACAP immunomodulatory effect on rainbow trout cell lines infected with Aeromonas salmonicida. PACAP from Clarias gariepinus (PACAP1) and a modified PACAP (PACAP5) were tested. RT-qPCR results showed that il1b and il8 expression in RTgutGC was significantly downregulated while tgfb expression was upregulated after PACAP treatment. Importantly, the concentration of IL-1β and IFN-γ increased in the conditioned media of RTS11 cells incubated with PACAP1 and exposed to A. salmonicida. There was a poor correlation between gene expression and protein concentration, suggesting a stimulation of the translation of IL-1β protein from previously accumulated transcripts or the cleavage of accumulated IL-1β precursor. In-silico studies of PACAP-receptor interactions showed a turn of the peptide characteristic of PACAP-PAC1 interaction, correlated with the higher number of interactions observed with this specific receptor, which is also in agreement with the higher PACAP specificity described for PAC1 compared to VPAC1 and VPACA2. Finally, the in silico analysis revealed nine amino acids related to the PACAP receptor-associated functionality.
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Affiliation(s)
- Laura Rivera Méndez
- Department of Biology, University of Waterloo, 200 University Ave W., Waterloo, ON, Canada
| | - Manuel Soto-Dávila
- Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PE, C1A 4P3, Canada
| | - Valentina Wong-Benito
- Department of Biology, University of Waterloo, 200 University Ave W., Waterloo, ON, Canada
| | - Tania Rodríguez-Ramos
- Department of Biology, University of Waterloo, 200 University Ave W., Waterloo, ON, Canada
| | - Yamila Carpio
- Animal Biotechnology Department, Center for Genetic Engineering and Biotechnology (CIGB), P.O. Box 6162, Havana, 10600, Cuba
| | - Mario Pablo Estrada
- Animal Biotechnology Department, Center for Genetic Engineering and Biotechnology (CIGB), P.O. Box 6162, Havana, 10600, Cuba
| | - Brian Dixon
- Department of Biology, University of Waterloo, 200 University Ave W., Waterloo, ON, Canada.
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5
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Nováková M, Vyletelová V, Hlubinová B, Kiňová Sepová H, Pašková Ľ. Impact of culture medium on the interpretation of qRT-PCR data in HepG2 incubated with lactobacilli. Lett Appl Microbiol 2024; 77:ovae050. [PMID: 38806242 DOI: 10.1093/lambio/ovae050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/29/2024] [Accepted: 05/27/2024] [Indexed: 05/30/2024]
Abstract
Recently, an increasing number of studies have investigated the mechanism of action of lactobacilli in the treatment of non-alcoholic fatty liver disease. Using four computational tools (NormFinder, geNorm, Delta Ct, and BestKeeper), six potential reference genes (RGs) were analyzed in the human liver cell line HepG2 cultivated 24 h in the presence of two strains of heat-killed lactobacilli, Limosilactobacillus reuteri E and Lactiplantibacillus plantarum KG4, respectively, in different cultivation media [Dulbecco´s Modified Eagle´s Medium (DMEM) high glucose or Roswell Park Memorial Institute (RPMI)]. The analysis revealed that the suitability of RG was similar between the two lactobacilli but quite different between the two media. The commonly used RGs, 18S rRNA and glyceraldehyde-3-phosphate dehydrogenase were the most unstable in DMEM high glucose. Normalization of the mRNA expression of the target gene encoding sterol regulatory element-binding protein 1c (SREBP-1c) to different RGs resulted in different expression profiles. This demonstrates that validation of candidate RGs under specific experimental conditions is crucial for the correct interpretation of quantitative polymerase chain reaction data. In addition, the choice of media has a profound impact on the effect of lactobacilli on lipogenesis at the gene expression level, as shown by the transcription factor SREBP-1c.
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Affiliation(s)
- Mária Nováková
- Department of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University, 83232 Bratislava, Slovakia
| | - Veronika Vyletelová
- Department of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University, 83232 Bratislava, Slovakia
| | - Barbora Hlubinová
- Department of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University, 83232 Bratislava, Slovakia
| | - Hana Kiňová Sepová
- Department of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University, 83232 Bratislava, Slovakia
| | - Ľudmila Pašková
- Department of Cell and Molecular Biology of Drugs, Faculty of Pharmacy, Comenius University, 83232 Bratislava, Slovakia
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6
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Giusti SA, Pino NS, Pannunzio C, Ogando MB, Armando NG, Garrett L, Zimprich A, Becker L, Gimeno ML, Lukin J, Merino FL, Pardi MB, Pedroncini O, Di Mauro GC, Durner VG, Fuchs H, de Angelis MH, Patop IL, Turck CW, Deussing JM, Vogt Weisenhorn DM, Jahn O, Kadener S, Hölter SM, Brose N, Giesert F, Wurst W, Marin-Burgin A, Refojo D. A brain-enriched circular RNA controls excitatory neurotransmission and restricts sensitivity to aversive stimuli. SCIENCE ADVANCES 2024; 10:eadj8769. [PMID: 38787942 PMCID: PMC11122670 DOI: 10.1126/sciadv.adj8769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 04/22/2024] [Indexed: 05/26/2024]
Abstract
Circular RNAs (circRNAs) are a large class of noncoding RNAs. Despite the identification of thousands of circular transcripts, the biological significance of most of them remains unexplored, partly because of the lack of effective methods for generating loss-of-function animal models. In this study, we focused on circTulp4, an abundant circRNA derived from the Tulp4 gene that is enriched in the brain and synaptic compartments. By creating a circTulp4-deficient mouse model, in which we mutated the splice acceptor site responsible for generating circTulp4 without affecting the linear mRNA or protein levels, we were able to conduct a comprehensive phenotypic analysis. Our results demonstrate that circTulp4 is critical in regulating neuronal and brain physiology, modulating the strength of excitatory neurotransmission and sensitivity to aversive stimuli. This study provides evidence that circRNAs can regulate biologically relevant functions in neurons, with modulatory effects at multiple levels of the phenotype, establishing a proof of principle for the regulatory role of circRNAs in neural processes.
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Affiliation(s)
- Sebastian A. Giusti
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
- Molecular Neurobiology, Max Planck Institute of Psychiatry, Munich, Germany
| | - Natalia S. Pino
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
| | - Camila Pannunzio
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Mora B. Ogando
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Natalia G. Armando
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Lillian Garrett
- German Mouse Clinic, Helmholtz Zentrum München, Munich, Germany
| | - Annemarie Zimprich
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
- German Mouse Clinic, Helmholtz Zentrum München, Munich, Germany
- Chair of Developmental Genetics, Munich School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Lore Becker
- German Mouse Clinic, Helmholtz Zentrum München, Munich, Germany
| | - Maria L. Gimeno
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Jeronimo Lukin
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Florencia L. Merino
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - M. Belen Pardi
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Olivia Pedroncini
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Giuliana C. Di Mauro
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | | | - Helmut Fuchs
- German Mouse Clinic, Helmholtz Zentrum München, Munich, Germany
| | - Martin Hrabe de Angelis
- German Mouse Clinic, Helmholtz Zentrum München, Munich, Germany
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
| | | | - Christoph W. Turck
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany
| | - Jan M. Deussing
- Molecular Neurogenetics, Max Planck Institute of Psychiatry, Munich, Germany
| | - Daniela M. Vogt Weisenhorn
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
- Chair of Developmental Genetics, Munich School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Olaf Jahn
- Department of Molecular Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Georg-August-University, Göttingen, Germany
| | | | - Sabine M. Hölter
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
| | - Nils Brose
- Department of Molecular Neurobiology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Florian Giesert
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
| | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany
- Chair of Developmental Genetics, Munich School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
- Munich Cluster of Systems Neurology (SyNergy), Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE) Site Munich, Munich, Germany
| | - Antonia Marin-Burgin
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Damian Refojo
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)–CONICET–Partner Institute of the Max Planck Society, Buenos Aires, Argentina
- Molecular Neurobiology, Max Planck Institute of Psychiatry, Munich, Germany
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7
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Anitua E, Zalduendo M, Tierno R, Alkhraisat MH. Plasma Rich in Growth Factors in Bone Regeneration: The Proximity to the Clot as a Differential Factor in Osteoblast Cell Behaviour. Dent J (Basel) 2024; 12:122. [PMID: 38786520 PMCID: PMC11119057 DOI: 10.3390/dj12050122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/12/2024] [Accepted: 04/19/2024] [Indexed: 05/25/2024] Open
Abstract
The osteogenic differentiation process, by which bone marrow mesenchymal stem cells and osteoprogenitors transform into osteoblasts, is regulated by several growth factors, cytokines, and hormones. Plasma Rich in Growth Factors (PRGF) is a blood-derived preparation consisting of a plethora of bioactive molecules, also susceptible to containing epigenetic factors such as ncRNAs and EVs, that stimulates tissue regeneration. The aim of this study was to investigate the effect of the PRGF clot formulation on osteogenic differentiation. Firstly, osteoblast cells were isolated and characterised. The proliferation of bone cells cultured onto PRGF clots or treated with PRGF supernatant was determined. Moreover, the gene expression of Runx2 (ID: 860), SP7 (ID: 121340), and ALPL (ID: 249) was analysed by one-step real-time quantitative polymerase chain reaction (RT-qPCR). Additionally, alkaline phosphatase (ALPL) activity determination was performed. The highest proliferative effect was achieved by the PRGF supernatant in all the study periods analysed. Concerning gene expression, the logRGE of Runx2 increased significantly in osteoblasts cultured with PRGF formulations compared with the control group, while that of SP7 increased significantly in osteoblasts grown on the PRGF clots. On the other hand, despite the fact that the PRGF supernatant induced ALPL up-regulation, significantly higher enzyme activity was detected for the PRGF clots in comparison with the supernatant formulation. According to our results, contact with the PRGF clot could promote a more advanced phase in the osteogenic process, associated to higher levels of ALPL activity. Furthermore, the PRGF clot releasate stimulated a higher proliferation rate in addition to reduced SP7 expression in the cells located at a distant ubication, leading to a less mature osteoblast stage. Thus, the spatial relationship between the PRGF clot and the osteoprogenitors cells could be a factor that influences regenerative outcomes.
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Affiliation(s)
- Eduardo Anitua
- BTI-Biotechnology Institute, 01007 Vitoria, Spain; (M.Z.); (R.T.); (M.H.A.)
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), 01007 Vitoria, Spain
| | - Mar Zalduendo
- BTI-Biotechnology Institute, 01007 Vitoria, Spain; (M.Z.); (R.T.); (M.H.A.)
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), 01007 Vitoria, Spain
| | - Roberto Tierno
- BTI-Biotechnology Institute, 01007 Vitoria, Spain; (M.Z.); (R.T.); (M.H.A.)
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), 01007 Vitoria, Spain
| | - Mohammad Hamdan Alkhraisat
- BTI-Biotechnology Institute, 01007 Vitoria, Spain; (M.Z.); (R.T.); (M.H.A.)
- University Institute for Regenerative Medicine & Oral Implantology, UIRMI (UPV/EHU-Fundación Eduardo Anitua), 01007 Vitoria, Spain
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8
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Kulma M, Šakanović A, Bedina-Zavec A, Caserman S, Omersa N, Šolinc G, Orehek S, Hafner-Bratkovič I, Kuhar U, Slavec B, Krapež U, Ocepek M, Kobayashi T, Kwiatkowska K, Jerala R, Podobnik M, Anderluh G. Sequestration of membrane cholesterol by cholesterol-binding proteins inhibits SARS-CoV-2 entry into Vero E6 cells. Biochem Biophys Res Commun 2024; 716:149954. [PMID: 38704887 DOI: 10.1016/j.bbrc.2024.149954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/26/2024] [Accepted: 04/15/2024] [Indexed: 05/07/2024]
Abstract
Membrane lipids and proteins form dynamic domains crucial for physiological and pathophysiological processes, including viral infection. Many plasma membrane proteins, residing within membrane domains enriched with cholesterol (CHOL) and sphingomyelin (SM), serve as receptors for attachment and entry of viruses into the host cell. Among these, human coronaviruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), use proteins associated with membrane domains for initial binding and internalization. We hypothesized that the interaction of lipid-binding proteins with CHOL in plasma membrane could sequestrate lipids and thus affect the efficiency of virus entry into host cells, preventing the initial steps of viral infection. We have prepared CHOL-binding proteins with high affinities for lipids in the plasma membrane of mammalian cells. Binding of the perfringolysin O domain four (D4) and its variant D4E458L to membrane CHOL impaired the internalization of the receptor-binding domain of the SARS-CoV-2 spike protein and the pseudovirus complemented with the SARS-CoV-2 spike protein. SARS-CoV-2 replication in Vero E6 cells was also decreased. Overall, our results demonstrate that the integrity of CHOL-rich membrane domains and the accessibility of CHOL in the membrane play an essential role in SARS-CoV-2 cell entry.
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Affiliation(s)
- Magdalena Kulma
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Aleksandra Šakanović
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Apolonija Bedina-Zavec
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Simon Caserman
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Neža Omersa
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Gašper Šolinc
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Sara Orehek
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Iva Hafner-Bratkovič
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia; EN-FIST Centre of Excellence, Trg Osvobodilne Fronte 13, 1000, Ljubljana, Slovenia
| | - Urška Kuhar
- Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Brigita Slavec
- Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Uroš Krapež
- Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Matjaž Ocepek
- Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Toshihide Kobayashi
- Lipid Biology Laboratory, RIKEN, 2-1, Hirosawa, Wako-shi, Saitama, 351-0198, Japan; UMR 7021 CNRS, Université de Strasbourg, F-67401, Illkirch, France
| | - Katarzyna Kwiatkowska
- Laboratory of Molecular Membrane Biology, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, 3 Pasteur St., 02-093, Warsaw, Poland
| | - Roman Jerala
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia; EN-FIST Centre of Excellence, Trg Osvobodilne Fronte 13, 1000, Ljubljana, Slovenia
| | - Marjetka Podobnik
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia
| | - Gregor Anderluh
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia.
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9
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Wang C, Wang Q, Xu G, Sun Z, Zhang D, Ma C, Li Y, Wen D, Zhang X, Cong B. Circular RNA expression profiles and functional predication after restraint stress in the amygdala of rats. Front Mol Neurosci 2024; 17:1381098. [PMID: 38685915 PMCID: PMC11056511 DOI: 10.3389/fnmol.2024.1381098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/04/2024] [Indexed: 05/02/2024] Open
Abstract
Prolonged or repeated exposure to stress elevates the risk of various psychological diseases, many of which are characterized by central nervous system dysfunction. Recent studies have demonstrated that circular RNAs (circRNAs) are highly abundant in the mammalian brain. Although their precise expression and function remain unknown, they have been hypothesized to regulate transcriptional and post-transcriptional gene expression. In this investigation, we comprehensively analyzed whether restraint stress for 2 days altered the circRNA expression profile in the amygdala of male rats. The impact of restraint stress on behavior was evaluated using an elevated plus maze and open field test. Serum corticosterone levels were measured using an enzyme-linked immunosorbent assay. A total of 10,670 circRNAs were identified using RNA sequencing. Ten circRNAs were validated by reverse transcription and quantitative polymerase chain reaction analysis. Gene ontology and Kyoto encyclopedia of genes and genomes pathway analyzes supported the notion that genes associated with differentially expressed circRNAs are primarily implicated in neuronal activity and neurotransmitter transport. Moreover, the three differentially expressed circRNAs showed high specificity in the amygdala. Overall, these findings indicate that differentially expressed circRNAs are highly enriched in the amygdala and offer a potential direction for further research on restraint stress.
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Affiliation(s)
- Chuan Wang
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
| | - Qian Wang
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
| | - Guangming Xu
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
- Department of Forensic Medicine, The National Police University for Criminal Justice, Baoding, China
| | - Zhaoling Sun
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
| | - Dong Zhang
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
- College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Chunling Ma
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
| | - Yingmin Li
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
| | - Di Wen
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
| | - Xiaojing Zhang
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
| | - Bin Cong
- College of Forensic Medicine, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Medical University, Shijiazhuang, China
- Hainan Tropical Forensic Medicine Academician Workstation, Haikou, China
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10
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Huynh TQ, Tran NBV, Pham TTV, Le VBT, Truong TP, Huynh VA, Tong TH, Trinh TTL, Nguyen VD, Pham LNM, Nguyen TH, Lin Q, Lim TK, Lin Q, Nguyen TTH. Adaptive response of Pseudomonas aeruginosa under serial ciprofloxacin exposure. MICROBIOLOGY (READING, ENGLAND) 2024; 170:001443. [PMID: 38568202 PMCID: PMC11084610 DOI: 10.1099/mic.0.001443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/14/2024] [Indexed: 04/05/2024]
Abstract
Understanding the evolution of antibiotic resistance is important for combating drug-resistant bacteria. In this work, we investigated the adaptive response of Pseudomonas aeruginosa to ciprofloxacin. Ciprofloxacin-susceptible P. aeruginosa ATCC 9027, CIP-E1 (P. aeruginosa ATCC 9027 exposed to ciprofloxacin for 14 days) and CIP-E2 (CIP-E1 cultured in antibiotic-free broth for 10 days) were compared. Phenotypic responses including cell morphology, antibiotic susceptibility, and production of pyoverdine, pyocyanin and rhamnolipid were assessed. Proteomic responses were evaluated using comparative iTRAQ labelling LC-MS/MS to identify differentially expressed proteins (DEPs). Expression of associated genes coding for notable DEPs and their related regulatory genes were checked using quantitative reverse transcriptase PCR. CIP-E1 displayed a heterogeneous morphology, featuring both filamentous cells and cells with reduced length and width. By contrast, although filaments were not present, CIP-E2 still exhibited size reduction. Considering the MIC values, ciprofloxacin-exposed strains developed resistance to fluoroquinolone antibiotics but maintained susceptibility to other antibiotic classes, except for carbapenems. Pyoverdine and pyocyanin production showed insignificant decreases, whereas there was a significant decrease in rhamnolipid production. A total of 1039 proteins were identified, of which approximately 25 % were DEPs. In general, there were more downregulated proteins than upregulated proteins. Noted changes included decreased OprD and PilP, and increased MexEF-OprN, MvaT and Vfr, as well as proteins of ribosome machinery and metabolism clusters. Gene expression analysis confirmed the proteomic data and indicated the downregulation of rpoB and rpoS. In summary, the response to CIP involved approximately a quarter of the proteome, primarily associated with ribosome machinery and metabolic processes. Potential targets for bacterial interference encompassed outer membrane proteins and global regulators, such as MvaT.
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Affiliation(s)
- Thuc Quyen Huynh
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Nguyen Bao Vy Tran
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Thi Thuy Vy Pham
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Vo Bao Tran Le
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | | | - Van An Huynh
- Gia Dinh People’s Hospital, Ho Chi Minh City, Vietnam
| | - Thi Hang Tong
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Thi Truc Ly Trinh
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Van Dung Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Le Nhat Minh Pham
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
- Cho Ray Hospital, Ho Chi Minh City, Vietnam
| | - Thi Hiep Nguyen
- Viet Nam National University, Ho Chi Minh City, Vietnam
- School of Biomedical Engineering, International University, Ho Chi Minh City, Vietnam
| | - Qifeng Lin
- Protein and Proteomics Centre, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Teck Kwang Lim
- Protein and Proteomics Centre, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Qingsong Lin
- Protein and Proteomics Centre, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Thi Thu Hoai Nguyen
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
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11
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Guo S, Yang W, Chen D, Ren B, Guo L, Wang X, Xie W, Fan S, Artigas Ramirez MD, Han Y, Yuan Z, Zhang H, Weng Q. The effects of low ambient temperature on steroidogenesis and mitochondrial functions in the testes of wild ground squirrels (Spermophilus dauricus). Comp Biochem Physiol A Mol Integr Physiol 2024; 290:111585. [PMID: 38228267 DOI: 10.1016/j.cbpa.2024.111585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/18/2024]
Abstract
Seasonal reproduction is a widely used breeding strategy in wildlife, especially vertebrates inhabiting temperate regions. Generally, ambient temperature is considered a significant factor influencing the reproductive status of animals. In the present study, wild ground squirrels (Spermophilus dauricus), typical seasonal breeders, were used as an animal model to investigate the mechanism behind the impact of low ambient temperature on testicular function. To simulate the winter environment of wild ground squirrels, we lowered the temperature gradient in the rearing environment to 4 °C. At sampling, the body surface temperature of the squirrels reared under normal ambient temperature (22 °C, NAT group) and the low ambient temperature (4 °C, LAT group) were 31.5 °C and 22.8 °C, respectively. Subsequently, we conducted immunohistochemical assays, qPCR, and enzyme-linked immunosorbent assays (ELISA) to examine the variations in testicular functions, as well as the dynamics and functions of mitochondria, in the squirrels of NAT and LAT groups. As a result, the levels of positive immunostaining for PCNA, P21, and P27 were significantly lower in the testes of LAT group, while the levels of immunostaining for Cleaved Caspase-3 and TUNEL were significantly higher. In addition, the low-temperature treatment reduced the expression level of steroidogenesis-related genes, including LHR, FSHR, GATA-4, P450scc, and P450arom, and decreased the testosterone concentration. Moreover, markers of mitochondrial fission and fusion, DRP1 and MFN2, respectively, were increased in the testes of LAT group. Additionally, the mRNA level of SOD1 was notably higher in the testes of LAT group. In conclusion, the low ambient temperature inhibited spermatogenesis, steroidogenesis, as well as mitochondrial dynamics and functions in the testes of wild ground squirrels.
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Affiliation(s)
- Shiman Guo
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Wenjin Yang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Di Chen
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Baolong Ren
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Li Guo
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Xi Wang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Wenqian Xie
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Sijie Fan
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Maria Daniela Artigas Ramirez
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yingying Han
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Zhengrong Yuan
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Haolin Zhang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China.
| | - Qiang Weng
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China.
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12
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Vastagh C, Farkas I, Csillag V, Watanabe M, Kalló I, Liposits Z. Cholinergic Control of GnRH Neuron Physiology and Luteinizing Hormone Secretion in Male Mice: Involvement of ACh/GABA Cotransmission. J Neurosci 2024; 44:e1780232024. [PMID: 38320853 PMCID: PMC10957212 DOI: 10.1523/jneurosci.1780-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/12/2024] [Accepted: 01/22/2024] [Indexed: 03/22/2024] Open
Abstract
Gonadotropin-releasing hormone (GnRH)-synthesizing neurons orchestrate reproduction centrally. Early studies have proposed the contribution of acetylcholine (ACh) to hypothalamic control of reproduction, although the causal mechanisms have not been clarified. Here, we report that in vivo pharmacogenetic activation of the cholinergic system increased the secretion of luteinizing hormone (LH) in orchidectomized mice. 3DISCO immunocytochemistry and electron microscopy revealed the innervation of GnRH neurons by cholinergic axons. Retrograde viral labeling initiated from GnRH-Cre neurons identified the medial septum and the diagonal band of Broca as exclusive sites of origin for cholinergic afferents of GnRH neurons. In acute brain slices, ACh and carbachol evoked a biphasic effect on the firing rate in GnRH neurons, first increasing and then diminishing it. In the presence of tetrodotoxin, carbachol induced an inward current, followed by a decline in the frequency of miniature postsynaptic currents (mPSCs), indicating a direct influence on GnRH cells. RT-PCR and whole-cell patch-clamp studies revealed that GnRH neurons expressed both nicotinic (α4β2, α3β4, and α7) and muscarinic (M1-M5) AChRs. The nicotinic AChRs contributed to the nicotine-elicited inward current and the rise in firing rate. Muscarine via M1 and M3 receptors increased, while via M2 and M4 reduced the frequency of both mPSCs and firing. Optogenetic activation of channelrhodopsin-2-tagged cholinergic axons modified GnRH neuronal activity and evoked cotransmission of ACh and GABA from a subpopulation of boutons. These findings confirm that the central cholinergic system regulates GnRH neurons and activates the pituitary-gonadal axis via ACh and ACh/GABA neurotransmissions in male mice.
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Affiliation(s)
- Csaba Vastagh
- Laboratory of Endocrine Neurobiology, HUN-REN Institute of Experimental Medicine, Budapest H-1083, Hungary
| | - Imre Farkas
- Laboratory of Endocrine Neurobiology, HUN-REN Institute of Experimental Medicine, Budapest H-1083, Hungary
| | - Veronika Csillag
- Laboratory of Endocrine Neurobiology, HUN-REN Institute of Experimental Medicine, Budapest H-1083, Hungary
| | - Masahiko Watanabe
- Department of Anatomy, Hokkaido University School of Medicine, Sapporo 060-8638, Japan
| | - Imre Kalló
- Laboratory of Endocrine Neurobiology, HUN-REN Institute of Experimental Medicine, Budapest H-1083, Hungary
| | - Zsolt Liposits
- Laboratory of Endocrine Neurobiology, HUN-REN Institute of Experimental Medicine, Budapest H-1083, Hungary
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13
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Witkamp D, Oudejans E, Hoogterp L, Hu-A-Ng GV, Glaittli KA, Stevenson TJ, Huijsmans M, Abbink TEM, van der Knaap MS, Bonkowsky JL. Lithium: effects in animal models of vanishing white matter are not promising. Front Neurosci 2024; 18:1275744. [PMID: 38352041 PMCID: PMC10861708 DOI: 10.3389/fnins.2024.1275744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/04/2024] [Indexed: 02/16/2024] Open
Abstract
Vanishing white matter (VWM) is a devastating autosomal recessive leukodystrophy, resulting in neurological deterioration and premature death, and without curative treatment. Pathogenic hypomorphic variants in subunits of the eukaryotic initiation factor 2B (eIF2B) cause VWM. eIF2B is required for regulating the integrated stress response (ISR), a physiological response to cellular stress. In patients' central nervous system, reduced eIF2B activity causes deregulation of the ISR. In VWM mouse models, the extent of ISR deregulation correlates with disease severity. One approach to restoring eIF2B activity is by inhibition of GSK3β, a kinase that phosphorylates eIF2B and reduces its activity. Lithium, an inhibitor of GSK3β, is thus expected to stimulate eIF2B activity and ameliorate VWM symptoms. The effects of lithium were tested in zebrafish and mouse VWM models. Lithium improved motor behavior in homozygous eif2b5 mutant zebrafish. In lithium-treated 2b4he2b5ho mutant mice, a paradoxical increase in some ISR transcripts was found. Furthermore, at the dosage tested, lithium induced significant polydipsia in both healthy controls and 2b4he2b5ho mutant mice and did not increase the expression of other markers of lithium efficacy. In conclusion, lithium is not a drug of choice for further development in VWM based on the limited or lack of efficacy and significant side-effect profile.
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Affiliation(s)
- Diede Witkamp
- Child Neurology, Emma Children’s Hospital, Amsterdam Leukodystrophy Center, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, Amsterdam, Netherlands
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, Netherlands
| | - Ellen Oudejans
- Child Neurology, Emma Children’s Hospital, Amsterdam Leukodystrophy Center, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, Amsterdam, Netherlands
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, Netherlands
| | - Leoni Hoogterp
- Child Neurology, Emma Children’s Hospital, Amsterdam Leukodystrophy Center, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, Amsterdam, Netherlands
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, Netherlands
| | - Gino V. Hu-A-Ng
- Child Neurology, Emma Children’s Hospital, Amsterdam Leukodystrophy Center, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, Amsterdam, Netherlands
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, Netherlands
| | - Kathryn A. Glaittli
- Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Tamara J. Stevenson
- Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Marleen Huijsmans
- Child Neurology, Emma Children’s Hospital, Amsterdam Leukodystrophy Center, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, Amsterdam, Netherlands
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, Netherlands
| | - Truus E. M. Abbink
- Child Neurology, Emma Children’s Hospital, Amsterdam Leukodystrophy Center, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, Amsterdam, Netherlands
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, Netherlands
| | - Marjo S. van der Knaap
- Child Neurology, Emma Children’s Hospital, Amsterdam Leukodystrophy Center, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, Amsterdam, Netherlands
- Department of Integrative Neurophysiology, Center for Neurogenomics and Cognitive Research, VU University, Amsterdam, Netherlands
| | - Joshua L. Bonkowsky
- Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
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14
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Parra-Nunez P, Fernández-Jiménez N, Pachon-Penalba M, Sanchez-Moran E, Pradillo M, Santos JL. Synthetically induced Arabidopsis thaliana autotetraploids provide insights into the analysis of meiotic mutants with altered crossover frequency. THE NEW PHYTOLOGIST 2024; 241:197-208. [PMID: 37921581 DOI: 10.1111/nph.19366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 09/29/2023] [Indexed: 11/04/2023]
Abstract
Mutations affecting crossover (CO) frequency and distribution lead to the presence of univalents during meiosis, giving rise to aneuploid gametes and sterility. These mutations may have a different effect after chromosome doubling. The combination of altered ploidy and mutations could be potentially useful to gain new insights into the mechanisms and regulation of meiotic recombination; however, studies using autopolyploid meiotic mutants are scarce. Here, we have analyzed the cytogenetic consequences in colchicine-induced autotetraploids (colchiploids) from different Arabidopsis mutants with an altered CO frequency. We have found that there are three types of mutants: mutants in which chiasma frequency is doubled after chromosome duplication (zip4, mus81), as in the control; mutants in which polyploidy leads to a higher-than-expected increase in chiasma frequency (asy1, mer3, hei10, and mlh3); and mutants in which the rise in chiasma frequency produced by the presence of two extrachromosomal sets is less than doubled (msh5, fancm). In addition, the proportion of class I/class II COs varies after chromosome duplication in the control. The results obtained reveal the potential of colchiploid meiotic mutants for better understanding of the function of key proteins during plant meiosis. This is especially relevant considering that most crops are polyploids.
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Affiliation(s)
- Pablo Parra-Nunez
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Nadia Fernández-Jiménez
- Departamento de Genética, Fisiología y Microbiología, Facultad de Ciencias Biológicas, Madrid, 28040, Spain
| | - Miguel Pachon-Penalba
- Wellcome Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Michael Swann Building, Max Born Crescent, Edinburgh, EH9 3BF, UK
| | | | - Mónica Pradillo
- Departamento de Genética, Fisiología y Microbiología, Facultad de Ciencias Biológicas, Madrid, 28040, Spain
| | - Juan Luis Santos
- Departamento de Genética, Fisiología y Microbiología, Facultad de Ciencias Biológicas, Madrid, 28040, Spain
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15
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Lovatto M, Gonçalves-Vidigal MC, Vaz Bisneta M, Calvi AC, Mazucheli J, Vidigal Filho PS, Miranda EGR, Melotto M. Responsiveness of Candidate Genes on CoPv01CDRK/PhgPv01CDRK Loci in Common Bean Challenged by Anthracnose and Angular Leaf Spot Pathogens. Int J Mol Sci 2023; 24:16023. [PMID: 38003212 PMCID: PMC10671028 DOI: 10.3390/ijms242216023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 11/26/2023] Open
Abstract
Anthracnose (ANT) and angular leaf spot (ALS) are significant diseases in common bean, leading to considerable yield losses under specific environmental conditions. The California Dark Red Kidney (CDRK) bean cultivar is known for its resistance to multiple races of both pathogens. Previous studies have identified the CoPv01CDRK/PhgPv01CDRK resistance loci on chromosome Pv01. Here, we evaluated the expression levels of ten candidate genes near the CoPv01CDRK/PhgPv01CDRK loci and plant defense genes using quantitative real-time PCR in CDRK cultivar inoculated with races 73 of Colletotrichum lindemuthianum and 63-39 of Pseudocercospora griseola. Gene expression analysis revealed that the Phvul.001G246300 gene exhibited the most elevated levels, showing remarkable 7.8-fold and 8.5-fold increases for ANT and ALS, respectively. The Phvul.001G246300 gene encodes an abscisic acid (ABA) receptor with pyrabactin resistance, PYR1-like (PYL) protein, which plays a central role in the crosstalk between ABA and jasmonic acid responses. Interestingly, our results also showed that the other defense genes were initially activated. These findings provide critical insights into the molecular mechanisms underlying plant defense against these diseases and could contribute to the development of more effective disease management strategies in the future.
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Affiliation(s)
- Maike Lovatto
- Departamento de Agronomia, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
| | | | - Mariana Vaz Bisneta
- Departamento de Agronomia, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
| | - Alexandre Catto Calvi
- Departamento de Agronomia, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
| | - Josmar Mazucheli
- Departamento de Estatística, Universidade Estadual de Maringá, Maringá 87020-900, Brazil
| | | | | | - Maeli Melotto
- Department of Plant Sciences, University of California, Davis, CA 95616, USA
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16
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Brettoni C, Muzzi A, Rondini S, Weynants V, Rossi Paccani S. Ex-vivo RNA expression analysis of vaccine candidate genes in COPD sputum samples. Respir Res 2023; 24:243. [PMID: 37798723 PMCID: PMC10552247 DOI: 10.1186/s12931-023-02525-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 08/31/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a lung disease characterised by airflow-limiting inflammation and mucus production. Acute exacerbations are a major cause of COPD-related morbidity and mortality and are mostly associated with bacterial or viral infections. A vaccine targeting non-typeable Haemophilus influenzae (NTHi) and Moraxella catarrhalis (Mcat), the main bacteria associated with exacerbations, was tested in a Phase 2 trial. We assessed "ex-vivo" expression of vaccine candidate and housekeeping genes pd, pe, pilA, gapA, ompP6 of NTHi, and uspA2, parE, polA of Mcat in sputum samples of COPD patients and determined whether expression of the vaccine candidate genes pd, pe, pilA (NTHi) and uspA2 (Mcat) differed between stable and exacerbation samples. METHODS A single-centre, prospective, observational cohort study was conducted where 123 COPD patients were seen on enrolment, followed monthly for 2 years, and reviewed after onset of acute exacerbations. We selected 69 patients with sputum samples positive for NTHi or Mcat by PCR during at least one stable and one exacerbation visit. mRNA was isolated from the sputum, and expression of NTHi and Mcat genes was analysed with RT-PCR. Statistical analyses compared mRNA concentrations between stable and exacerbation samples and in relationship to COPD severity and exacerbation frequency. RESULTS The vaccine candidate genes were variably expressed in sputum samples, suggesting they are expressed in the lung. Absolute and relative expression of all NTHi vaccine candidate genes and Mcat uspA2 were similar between exacerbation and stable samples. Expression of pd and pilA was slightly associated with the number of exacerbations in the year before enrolment, and uspA2 with the disease severity status at enrolment. CONCLUSIONS The NTHi-Mcat vaccine candidate genes were expressed in sputum samples, and each gene had a specific level of expression. No statistically significant differences in gene expression were detectable between stable and exacerbation samples. However, the history of COPD exacerbations was slightly associated with the expression of pd, pilA and uspA2. Trial registration NCT01360398 ( https://www. CLINICALTRIALS gov ).
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17
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Ngo HL, Huynh TQ, Tran NBV, Nguyen NHB, Tong TH, Trinh TTL, Nguyen VD, Das PP, Lim TK, Lin Q, Nguyen TTH. Proteomic analysis of ceftazidime and meropenem-exposed Pseudomonas aeruginosa ATCC 9027. Proteome Sci 2023; 21:15. [PMID: 37770917 PMCID: PMC10537932 DOI: 10.1186/s12953-023-00217-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 09/12/2023] [Indexed: 09/30/2023] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is well known for its intrinsic ability to resist a wide range of antibiotics, thus complicates treatment. Thus, understanding the response of the pathogen to antibiotics is important for developing new therapies. In this study, proteomic response of P. aeruginosa to the commonly used anti-pseudomonas antibiotics, ceftazidime (Caz) and meropenem (Mem) was investigated. METHODS P. aeruginosa ATCC 9027, an antibiotic-susceptible strain, was exposed to sub-MIC values of antibiotics either Caz or Mem for 14 days to obtain E1 strains and then cultured in antibiotic-free environments for 10 days to obtain E2 strains. Proteomes of the initial and E1, E2 strains were identified and comparatively analyzed using isobaric tags for relative and absolute quantitation (iTRAQ) in cooperation with nano LC-MS/MS. Noted up and down-regulated proteins were confirmed with quantitative reverse transcriptase PCR (qRT-PCR). RESULTS Overall, 1039 and 1041 proteins were identified in Caz and Mem-exposed strains, respectively. Upon antibiotic exposure, there were 7-10% up-regulated (Caz: 71, Mem: 85) and down-regulated (Caz: 106, Mem: 69) proteins (1.5-fold change cut-off). For both Caz and Mem, the DEPs were primarily the ones involved in metabolic process, membrane, virulence, protein synthesis, and antibiotic resistance in which proteins involved in antibiotics resistance tended to be up-regulated while proteins involved in protein synthesis and metabolic process were down-regulated. Noted proteins included beta-lactamase AmpC which was up-regulated and OprD which was down-regulated in both the antibiotic-exposed strains. Besides, biofilm formation related proteins TssC1 and Hcp1 in Caz- exposed strains and the membrane/ periplasmic proteins Azu and PagL in Mem-exposed strains were found significantly down-regulated. qRT-PCR results confirmed the expression change of AmpC, Hcp1 and OprD proteins. CONCLUSION Exposure of Pseudomonas aeruginosa to sub-MIC values of Caz and Mem resulted in around 10% change in its proteome. Not only proteins with confirmed roles in antibiotic resistance mechanisms changed their expression but also virulence- associated proteins. Both Caz and Mem response involved up-regulation of AmpC and down-regulation of OprD. While TssC1 and Hcp1 were responsible for Caz response, Azu and PagL were more likely involved in Mem response.
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Affiliation(s)
- Hong Loan Ngo
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thuc Quyen Huynh
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
| | - Nguyen Bao Vy Tran
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Ngoc Hoa Binh Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Thi Hang Tong
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
| | - Thi Truc Ly Trinh
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
| | - Van Dung Nguyen
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
| | - Prem Prakash Das
- Department of Biological Sciences, Protein and Proteomics Centre, National University of Singapore, Singapore, Singapore
| | - Teck Kwang Lim
- Department of Biological Sciences, Protein and Proteomics Centre, National University of Singapore, Singapore, Singapore
| | - Qingsong Lin
- Department of Biological Sciences, Protein and Proteomics Centre, National University of Singapore, Singapore, Singapore
| | - Thi Thu Hoai Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam.
- Viet Nam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam.
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam.
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18
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Huynh TQ, Tran VN, Thai VC, Nguyen HA, Nguyen NTG, Tran MK, Nguyen TPT, Le CA, Ho LTN, Surian NU, Chen S, Nguyen TTH. Genomic alterations involved in fluoroquinolone resistance development in Staphylococcus aureus. PLoS One 2023; 18:e0287973. [PMID: 37494330 PMCID: PMC10370734 DOI: 10.1371/journal.pone.0287973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/19/2023] [Indexed: 07/28/2023] Open
Abstract
AIM Fluoroquinolone (FQ) is a potent antibiotic class. However, resistance to this class emerges quickly which hinders its application. In this study, mechanisms leading to the emergence of multidrug-resistant (MDR) Staphylococcus aureus (S. aureus) strains under FQ exposure were investigated. METHODOLOGY S. aureus ATCC 29213 was serially exposed to ciprofloxacin (CIP), ofloxacin (OFL), or levofloxacin (LEV) at sub-minimum inhibitory concentrations (sub-MICs) for 12 days to obtain S. aureus -1 strains and antibiotic-free cultured for another 10 days to obtain S. aureus-2 strains. The whole genome (WGS) and target sequencing were applied to analyze genomic alterations; and RT-qPCR was used to access the expressions of efflux-related genes, alternative sigma factors, and genes involved in FQ resistance. RESULTS A strong and irreversible increase of MICs was observed in all applied FQs (32 to 128 times) in all S. aureus-1 and remained 16 to 32 times in all S. aureus-2. WGS indicated 10 noticeable mutations occurring in all FQ-exposed S. aureus including 2 insdel mutations in SACOL0573 and rimI; a synonymous mutation in hslO; and 7 missense mutations located in an untranslated region. GrlA, was found mutated (R570H) in all S. aureus-1 and -2. Genes encoding for efflux pumps and their regulator (norA, norB, norC, and mgrA); alternative sigma factors (sigB and sigS); acetyltransferase (rimI); methicillin resistance (fmtB); and hypothetical protein BJI72_0645 were overexpressed in FQ-exposed strains. CONCLUSION The emergence of MDR S. aureus was associated with the mutations in the FQ-target sequences and the overexpression of efflux pump systems and their regulators.
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Affiliation(s)
- Thuc Quyen Huynh
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Van Nhi Tran
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Van Chi Thai
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hoang An Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Ngoc Thuy Giang Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Minh Khang Tran
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Thi Phuong Truc Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Cat Anh Le
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Le Thanh Ngan Ho
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | | | - Swaine Chen
- Genome Institute of Singapore, Singapore, Singapore
| | - Thi Thu Hoai Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
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19
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Jiang Y, Horkeby K, Henning P, Wu J, Lawenius L, Engdahl C, Gupta P, Movérare-Skrtic S, Nilsson KH, Levin E, Ohlsson C, Lagerquist MK. Membrane estrogen receptor α signaling modulates the sensitivity to estradiol treatment in a dose- and tissue- dependent manner. Sci Rep 2023; 13:9046. [PMID: 37270592 DOI: 10.1038/s41598-023-36146-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/30/2023] [Indexed: 06/05/2023] Open
Abstract
Estradiol (E2) affects both reproductive and non-reproductive tissues, and the sensitivity to different doses of E2 varies between tissues. Membrane estrogen receptor α (mERα)-initiated signaling plays a tissue-specific role in mediating E2 effects, however, it is unclear if mERα signaling modulates E2 sensitivity. To determine this, we treated ovariectomized C451A females, lacking mERα signaling, and wildtype (WT) littermates with physiological (0.05 μg/mouse/day (low); 0.6 μg/mouse/day (medium)) or supraphysiological (6 μg/mouse/day (high)) doses of E2 (17β-estradiol-3-benzoate) for three weeks. Low-dose treatment increased uterus weight in WT, but not C451A mice, while non-reproductive tissues (gonadal fat, thymus, trabecular and cortical bone) were unaffected in both genotypes. Medium-dose treatment increased uterus weight and bone mass and decreased thymus and gonadal fat weights in WT mice. Uterus weight was also increased in C451A mice, but the response was significantly attenuated (- 85%) compared to WT mice, and no effects were triggered in non-reproductive tissues. High-dose treatment effects in thymus and trabecular bone were significantly blunted (- 34% and - 64%, respectively) in C451A compared to WT mice, and responses in cortical bone and gonadal fat were similar between genotypes. Interestingly, the high dose effect in uterus was enhanced (+ 26%) in C451A compared to WT mice. In conclusion, loss of mERα signaling reduces the sensitivity to physiological E2 treatment in both non-reproductive tissues and uterus. Furthermore, the E2 effect after high-dose treatment in uterus is enhanced in the absence of mERα, suggesting a protective effect of mERα signaling in this tissue against supraphysiological E2 levels.
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Affiliation(s)
- Yiwen Jiang
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
| | - Karin Horkeby
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden.
| | - Petra Henning
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
| | - Jianyao Wu
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
| | - Lina Lawenius
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
| | - Cecilia Engdahl
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Priti Gupta
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Sofia Movérare-Skrtic
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
| | - Karin H Nilsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
| | - Ellis Levin
- Division of Endocrinology, Department of Medicine, University of California, Irvine, Irvine, CA, 92697, USA
- Department of Veterans Affairs Medical Center, Long Beach, Long Beach, CA, 90822, USA
| | - Claes Ohlsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
- Department of Drug Treatment, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - Marie K Lagerquist
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Vita Stråket 11, S-413 45, Göteborg, Sweden
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20
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Grzybkowska A, Anczykowska K, Antosiewicz J, Olszewski S, Dzitkowska-Zabielska M, Tomczyk M. Identification of Optimal Reference Genes for qRT-PCR Normalization for Physical Activity Intervention and Omega-3 Fatty Acids Supplementation in Humans. Int J Mol Sci 2023; 24:ijms24076734. [PMID: 37047706 PMCID: PMC10094777 DOI: 10.3390/ijms24076734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023] Open
Abstract
The quantitative polymerase chain reaction (qRT-PCR) technique gives promising opportunities to detect and quantify RNA targets and is commonly used in many research fields. This study aimed to identify suitable reference genes for physical exercise and omega-3 fatty acids supplementation intervention. Forty healthy, physically active men were exposed to a 12-week eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) supplementation and standardized endurance training protocol. Blood samples were collected before and after the intervention and mRNA levels of six potential reference genes were tested in the leukocytes of 18 eligible participants using the qRT-PCR method: GAPDH (Glyceraldehyde-3-phosphate dehydrogenase), ACTB (Beta actin), TUBB (Tubulin Beta Class I), RPS18 (Ribosomal Protein S18), UBE2D2 (Ubiquitin-conjugating enzyme E2 D2), and HPRT1 (Hypoxanthine Phosphoribosyltransferase 1). The raw quantification cycle (Cq) values were then analyzed using RefFinder, an online tool that incorporates four different algorithms: NormFinder, geNorm, BestKeeper, and the comparative delta-Ct method. Delta-Ct, NormFinder, BestKeeper, and RefFinder comprehensive ranking have found GAPDH to be the most stably expressed gene. geNorm has identified TUBB and HPRT as the most stable genes. All algorithms have found ACTB to be the least stably expressed gene. A combination of the three most stably expressed genes, namely GAPDH, TUBB, and HPRT, is suggested for obtaining the most reliable results.
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Affiliation(s)
- Agata Grzybkowska
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland
| | - Katarzyna Anczykowska
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland
| | - Jędrzej Antosiewicz
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 80-211 Gdansk, Poland
| | - Szczepan Olszewski
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 80-211 Gdansk, Poland
| | - Magdalena Dzitkowska-Zabielska
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland
- Center of Translational Medicine, Medical University of Gdansk, 80-952 Gdansk, Poland
| | - Maja Tomczyk
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland
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21
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Nevone A, Lattarulo F, Russo M, Panno G, Milani P, Basset M, Avanzini MA, Merlini G, Palladini G, Nuvolone M. A Strategy for the Selection of RT-qPCR Reference Genes Based on Publicly Available Transcriptomic Datasets. Biomedicines 2023; 11:biomedicines11041079. [PMID: 37189697 DOI: 10.3390/biomedicines11041079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023] Open
Abstract
In the next-generation sequencing era, RT-qPCR is still widely employed to quantify levels of nucleic acids of interest due to its popularity, versatility, and limited costs. The measurement of transcriptional levels through RT-qPCR critically depends on reference genes used for normalization. Here, we devised a strategy to select appropriate reference genes for a specific clinical/experimental setting based on publicly available transcriptomic datasets and a pipeline for RT-qPCR assay design and validation. As a proof-of-principle, we applied this strategy to identify and validate reference genes for transcriptional studies of bone-marrow plasma cells from patients with AL amyloidosis. We performed a systematic review of published literature to compile a list of 163 candidate reference genes for RT-qPCR experiments employing human samples. Next, we interrogated the Gene Expression Omnibus to assess expression levels of these genes in published transcriptomic studies on bone-marrow plasma cells from patients with different plasma cell dyscrasias and identified the most stably expressed genes as candidate normalizing genes. Experimental validation on bone-marrow plasma cells showed the superiority of candidate reference genes identified through this strategy over commonly employed “housekeeping” genes. The strategy presented here may apply to other clinical and experimental settings for which publicly available transcriptomic datasets are available.
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Affiliation(s)
- Alice Nevone
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Francesca Lattarulo
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Monica Russo
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Giada Panno
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Paolo Milani
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Marco Basset
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Maria Antonietta Avanzini
- Pediatric Hematology Oncology, Cell Factory, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Giampaolo Merlini
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Giovanni Palladini
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Mario Nuvolone
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
- Amyloidosis Research and Treatment Center, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
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Welling MT, Deseo MA, O’Brien M, Clifton J, Bacic A, Doblin MS. Metabolomic analysis of methyl jasmonate treatment on phytocannabinoid production in Cannabis sativa. FRONTIERS IN PLANT SCIENCE 2023; 14:1110144. [PMID: 37025140 PMCID: PMC10070988 DOI: 10.3389/fpls.2023.1110144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/07/2023] [Indexed: 06/19/2023]
Abstract
Cannabis sativa is a multi-use and chemically complex plant which is utilized for food, fiber, and medicine. Plants produce a class of psychoactive and medicinally important specialized metabolites referred to as phytocannabinoids (PCs). The phytohormone methyl jasmonate (MeJA) is a naturally occurring methyl ester of jasmonic acid and a product of oxylipin biosynthesis which initiates and regulates the biosynthesis of a broad range of specialized metabolites across a number of diverse plant lineages. While the effects of exogenous MeJA application on PC production has been reported, treatments have been constrained to a narrow molar range and to the targeted analysis of a small number of compounds. Using high-resolution mass spectrometry with data-dependent acquisition, we examined the global metabolomic effects of MeJA in C. sativa to explore oxylipin-mediated regulation of PC biosynthesis and accumulation. A dose-response relationship was observed, with an almost two-fold increase in PC content found in inflorescences of female clones treated with 15 mM MeJA compared to the control group. Comparison of the inflorescence metabolome across MeJA treatments coupled with targeted transcript analysis was used to elucidate key regulatory components contributing to PC production and metabolism more broadly. Revealing these biological signatures improves our understanding of the role of the oxylipin pathway in C. sativa and provides putative molecular targets for the metabolic engineering and optimization of chemical phenotype for medicinal and industrial end-uses.
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23
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Gelisin O, Susgun S, Toruntay C, Yabaci A, Baran G, Gursoy AEB, Yildiz GB, Yucesan E. Evaluation of miR-526b-3p, miR-1179, miR-3529-3p, miR-5011-5p as potential diagnostic biomarkers in isolated cervical dystonia. Rev Neurol (Paris) 2023:S0035-3787(23)00753-1. [PMID: 36759300 DOI: 10.1016/j.neurol.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 10/20/2022] [Accepted: 10/23/2022] [Indexed: 02/10/2023]
Abstract
BACKGROUND Cervical dystonia (CD) also named spasmodic torticollis is the most common type of focal dystonias and characterized by abnormal head, neck, and shoulder movements due to involuntary muscular spasm. Although CD is mostly idiopathic, to date, several genes have been associated with CD. However, to the best of our knowledge, microRNAs (miRNAs) which are interacted with CD-associated genes have been not evaluated yet. miRNAs are regulatory small non-coding RNAs and are suggested as potential biomarkers for many diseases through their stability in clinical samples. Therefore, we aimed to assess the expression levels of miRNAs (miR-526b-3p, miR-1179, miR-3529-3p, miR-5011-5p) which are targeted the CD-associated genes, and evaluate their performance as diagnostic biomarkers. METHODS Peripheral blood samples were obtained from 30 patients with isolated CD (ICD) and 25 healthy controls. The expression levels of miR-526b-3p, miR-1179, miR-3529-3p, and miR-5011-5p were analyzed via quantitative real-time PCR (qRT-PCR), and receiver operating characteristic (ROC) curves were generated to evaluate the diagnostic values. RESULTS miR-526b-3p, miR-1179, and miR-3529-3p were significantly up-regulated while miR-5011-5p was significantly down-regulated in ICD patients compared to healthy controls. ROC analysis revealed that all miRNAs, especially miR-1179 and miR-3529-3p were statistically significant with the area under the curve (AUC) of 0.905 and 0.933, respectively. CONCLUSION Altered expression levels of aforementioned miRNAs may be associated with CD pathogenesis. Our findings suggest using these four miRNAs as remarkable biomarkers in the diagnosis of ICD.
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Affiliation(s)
- O Gelisin
- Department of Neurology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - S Susgun
- Department of Genetics, Istanbul University, Aziz Sancar Institute of Experimental Research, Istanbul, Turkey; Institute of Graduate Studies in Health Sciences, Istanbul University, Istanbul, Turkey
| | - C Toruntay
- Department of Molecular Biology and Genetics, Yildiz Technical University, Graduate School of Science and Engineering, Istanbul, Turkey
| | - A Yabaci
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - G Baran
- Department of Neurology, Marmara University, Pendik Training and Research Hospital, Istanbul, Turkey
| | - A E B Gursoy
- Department of Neurology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - G B Yildiz
- Department of Neurology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - E Yucesan
- Department of Neurogenetics, Institute of Neurological Sciences , Istanbul University-Cerrahpasa, Istanbul, Turkey.
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Arabidopsis LSH10 transcription factor and OTLD1 histone deubiquitinase interact and transcriptionally regulate the same target genes. Commun Biol 2023; 6:58. [PMID: 36650214 PMCID: PMC9845307 DOI: 10.1038/s42003-023-04424-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 01/04/2023] [Indexed: 01/18/2023] Open
Abstract
Histone ubiquitylation/deubiquitylation plays a major role in the epigenetic regulation of gene expression. In plants, OTLD1, a member of the ovarian tumor (OTU) deubiquitinase family, deubiquitylates histone 2B and represses the expression of genes involved in growth, cell expansion, and hormone signaling. OTLD1 lacks the intrinsic ability to bind DNA. How OTLD1, as well as most other known plant histone deubiquitinases, recognizes its target genes remains unknown. Here, we show that Arabidopsis transcription factor LSH10, a member of the ALOG protein family, interacts with OTLD1 in living plant cells. Loss-of-function LSH10 mutations relieve the OTLD1-promoted transcriptional repression of the target genes, resulting in their elevated expression, whereas recovery of the LSH10 function results in down-regulated transcription of the same genes. We show that LSH10 associates with the target gene chromatin as well as with DNA sequences in the promoter regions of the target genes. Furthermore, without LSH10, the degree of H2B monoubiquitylation in the target promoter chromatin increases. Hence, our data suggest that OTLD1-LSH10 acts as a co-repressor complex potentially representing a general mechanism for the specific function of plant histone deubiquitinases at their target chromatin.
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25
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Ostlund I, Von Gunten M, Smith C, Edwards JG. Chronic Δ9-tetrahydrocannabinol impact on plasticity, and differential activation requirement for CB1-dependent long-term depression in ventral tegmental area GABA neurons in adult versus young mice. Front Neurosci 2023; 16:1067493. [PMID: 36699526 PMCID: PMC9869137 DOI: 10.3389/fnins.2022.1067493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 12/12/2022] [Indexed: 01/11/2023] Open
Abstract
The ventral tegmental area (VTA) mediates incentive salience and reward prediction error through dopamine (DA) neurons that are regulated by local VTA GABA neurons. In young mice, VTA GABA cells exhibit a form of synaptic plasticity known as long-term depression (LTD) that is dependent on cannabinoid 1 (CB1) receptors preceded by metabotropic glutamate receptor 5 (mGluR5) signaling to induce endocannabinoid production. This LTD was eliminated following chronic (7-10 consecutive days) exposure to the marijuana derived cannabinoid Δ9 -tetrahydrocannabinol (THC). We now examine the mechanism behind THC-induced elimination of LTD in adolescents as well as plasticity induction ability in adult versus young male and female mice using whole-cell electrophysiology experiments of VTA GABA cells. Chronic THC injections in adolescents resulted in a loss of CB1 agonist-mediated depression, illustrating chronic THC likely desensitizes or removes synaptic CB1. We noted that seven days withdrawal from chronic THC restored LTD and CB1 agonist-induced depression, suggesting reversibility of THC-induced changes. Adult mice continue to express functional mGluR5 and CB1, but require a doubling of the synaptic stimulation compared to young mice to induce LTD, suggesting a quantitative difference in CB1-dependent plasticity between young and adult mice. One potential rationale for this difference is changes in AMPA and NMDA glutamate receptors. Indeed, AMPA/NMDA ratios were increased in in adults compared to young mice. Lastly, we performed quantitative reverse-transcription PCR and identified that CB1, DAGLα, and GluA1 levels increased following chronic THC exposure. Collectively, our data demonstrate the first age-dependent GABA neuron plasticity in the VTA, which could have implications for decreased THC dependence capacity in adults, as well as the mechanism behind chronic THC-induced synaptic alterations in young mice.
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Affiliation(s)
- Isaac Ostlund
- Department of Cell Biology and Physiology, Brigham Young University, Provo, UT, United States
| | | | - Calvin Smith
- Neuroscience Center, Brigham Young University, Provo, UT, United States
| | - Jeffrey G. Edwards
- Department of Cell Biology and Physiology, Brigham Young University, Provo, UT, United States
- Neuroscience Center, Brigham Young University, Provo, UT, United States
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Lasorella C, Fortunato S, Dipierro N, Jeran N, Tadini L, Vita F, Pesaresi P, de Pinto MC. Chloroplast-localized GUN1 contributes to the acquisition of basal thermotolerance in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2022; 13:1058831. [PMID: 36618674 PMCID: PMC9813751 DOI: 10.3389/fpls.2022.1058831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Heat stress (HS) severely affects different cellular compartments operating in metabolic processes and represents a critical threat to plant growth and yield. Chloroplasts are crucial for heat stress response (HSR), signaling to the nucleus the environmental challenge and adjusting metabolic and biosynthetic functions accordingly. GENOMES UNCOUPLED 1 (GUN1), a chloroplast-localized protein, has been recognized as one of the main players of chloroplast retrograde signaling. Here, we investigate HSR in Arabidopsis wild-type and gun1 plantlets subjected to 2 hours of HS at 45°C. In wild-type plants, Reactive Oxygen Species (ROS) accumulate promptly after HS, contributing to transiently oxidize the cellular environment and acting as signaling molecules. After 3 hours of physiological recovery at growth temperature (22°C), the induction of enzymatic and non-enzymatic antioxidants prevents oxidative damage. On the other hand, gun1 mutants fail to induce the oxidative burst immediately after HS and accumulate ROS and oxidative damage after 3 hours of recovery at 22°C, thus resulting in enhanced sensitivity to HS. These data suggest that GUN1 is required to oxidize the cellular environment, participating in the acquisition of basal thermotolerance through the redox-dependent plastid-to-nucleus communication.
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Affiliation(s)
- Cecilia Lasorella
- Department of Bioscience, Biotechnology and Environment University of Bari Aldo Moro, Bari, Italy
| | - Stefania Fortunato
- Department of Bioscience, Biotechnology and Environment University of Bari Aldo Moro, Bari, Italy
| | - Nunzio Dipierro
- Department of Bioscience, Biotechnology and Environment University of Bari Aldo Moro, Bari, Italy
| | - Nicolaj Jeran
- Department of Biosciences, University of Milano, Milano, Italy
| | - Luca Tadini
- Department of Biosciences, University of Milano, Milano, Italy
| | - Federico Vita
- Department of Bioscience, Biotechnology and Environment University of Bari Aldo Moro, Bari, Italy
| | - Paolo Pesaresi
- Department of Biosciences, University of Milano, Milano, Italy
| | - Maria Concetta de Pinto
- Department of Bioscience, Biotechnology and Environment University of Bari Aldo Moro, Bari, Italy
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The Role of Bromodomain and Extraterminal (BET) Proteins in Controlling the Phagocytic Activity of Microglia In Vitro: Relevance to Alzheimer's Disease. Int J Mol Sci 2022; 24:ijms24010013. [PMID: 36613460 PMCID: PMC9820364 DOI: 10.3390/ijms24010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
The correct phagocytic activity of microglia is a prerequisite for maintaining homeostasis in the brain. In the analysis of mechanisms regulating microglial phagocytosis, we focused on the bromodomain and extraterminal domain (BET) proteins: Brd2, Brd3, and Brd4, the acetylation code readers that control gene expression in cooperation with transcription factors. We used pharmacological (JQ1) and genetic (siRNA) inhibition of BET proteins in murine microglial cell line BV2. Inhibition of BET proteins reduced the phagocytic activity of BV2, as determined by using a fluorescent microspheres-based assay and fluorescently labelled amyloid-beta peptides. Gene silencing experiments demonstrated that all brain-existing BET isoforms control phagocytosis in microglia. From a set of 84 phagocytosis-related genes, we have found the attenuation of the expression of 14: Siglec1, Sirpb1a, Cd36, Clec7a, Itgam, Tlr3, Fcgr1, Cd14, Marco, Pld1, Fcgr2b, Anxa1, Tnf, Nod1, upon BET inhibition. Further analysis of the mRNA level of other phagocytosis-related genes which were involved in the pathomechanism of Alzheimer's disease demonstrated that JQ1 significantly reduced the expression of Cd33, Trem2, and Zyx. Our results indicate the important role of BET proteins in controlling microglial phagocytosis; therefore, targeting BET may be the efficient method of modulating microglial activity.
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Endocannabinoid System Regulation in Female Rats with Recurrent Episodes of Binge Eating. Int J Mol Sci 2022; 23:ijms232315228. [PMID: 36499556 PMCID: PMC9738776 DOI: 10.3390/ijms232315228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Recurrent Binge Eating (BE) episodes characterize several eating disorders. Here, we attempted to reassemble a condition closer to BE disorder, and we analyzed whether recurrent episodes might evoke molecular alterations in the hypothalamus of rats. The hypothalamus is a brain region which is sensitive to stress and relevant in motivated behaviors, such as food intake. A well-characterized animal model of BE, in which a history of intermittent food restriction and stress induce binge-like palatable food consumption, was used to analyze the transcriptional regulation of the endocannabinoid system (ECS). We detected, in rats showing the BE behavior, an up-regulated gene expression of cannabinoid type-1 receptor (CB1), sn-1-specific diacylglycerol lipase, as well as fatty acid amide hydrolase (Faah) and monoacylglycerol lipase. A selective reduction in DNA methylation was also observed at the promoter of Faah, which is consistent with the changes in the gene expression. Moreover, BE behavior in rats was associated with an increase in anandamide (AEA) levels. Our findings support the relevant role of the ECS in the regulation of food intake in rats subjected to repeated BE episodes, and, in particular, on AEA signaling, acting via CB1 and FAAH modulation. Notably, the epigenetic regulation of the Faah gene might suggest this enzyme as a possible target for developing new therapeutical approaches.
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EMILIN1 deficiency causes arterial tortuosity with osteopenia and connects impaired elastogenesis with defective collagen fibrillogenesis. Am J Hum Genet 2022; 109:2230-2252. [PMID: 36351433 PMCID: PMC9748297 DOI: 10.1016/j.ajhg.2022.10.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 10/20/2022] [Indexed: 11/09/2022] Open
Abstract
EMILIN1 (elastin-microfibril-interface-located-protein-1) is a structural component of the elastic fiber network and localizes to the interface between the fibrillin microfibril scaffold and the elastin core. How EMILIN1 contributes to connective tissue integrity is not fully understood. Here, we report bi-allelic EMILIN1 loss-of-function variants causative for an entity combining cutis laxa, arterial tortuosity, aneurysm formation, and bone fragility, resembling autosomal-recessive cutis laxa type 1B, due to EFEMP2 (FBLN4) deficiency. In both humans and mice, absence of EMILIN1 impairs EFEMP2 extracellular matrix deposition and LOX activity resulting in impaired elastogenesis, reduced collagen crosslinking, and aberrant growth factor signaling. Collagen fiber ultrastructure and histopathology in EMILIN1- or EFEMP2-deficient skin and aorta corroborate these findings and murine Emilin1-/- femora show abnormal trabecular bone formation and strength. Altogether, EMILIN1 connects elastic fiber network with collagen fibril formation, relevant for both bone and vascular tissue homeostasis.
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Prolonged Antiretroviral Treatment Induces Adipose Tissue Remodelling Associated with Mild Inflammation in SIV-Infected Macaques. Cells 2022; 11:cells11193104. [PMID: 36231066 PMCID: PMC9561982 DOI: 10.3390/cells11193104] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 11/26/2022] Open
Abstract
During chronic SIV/HIV infection, adipose tissue (AT) is the target of both antiretroviral treatment (ART) and the virus. AT might subsequently contribute to the low-grade systemic inflammation observed in patients on ART. To evaluate the inflammatory profile of AT during chronic SIV/HIV infection, we assayed subcutaneous and visceral abdominal AT from non-infected (SIV−, control), ART-naïve SIV-infected (SIV+) and ART-controlled SIV-infected (SIV+ART+) cynomolgus macaques for the mRNA expression of genes coding for factors related to inflammation. Significant differences were observed only when comparing the SIV+ART+ group with the SIV+ and/or SIV− groups. ART-treated infection impacted the metabolic fraction (with elevated expression of PPARγ and CEBPα), the extracellular matrix (with elevated expression of COL1A2 and HIF-1α), and the inflammatory profile. Both pro- and anti-inflammatory signatures were detected in AT, with greater mRNA expression of anti-inflammatory markers (adiponectin and CD163) and markers associated with inflammation (TNF-α, Mx1, CCL5 and CX3CL1). There were no intergroup differences in other markers (IL-6 and MCP-1). In conclusion, we observed marked differences in the immune and metabolic profiles of AT in the context of an ART-treated, chronic SIV infection; these differences were related more to ART than to SIV infection per se.
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Burris BJD, Molina Vargas AM, Park BJ, O'Connell MR. Optimization of specific RNA knockdown in mammalian cells with CRISPR-Cas13. Methods 2022; 206:58-68. [PMID: 35987443 PMCID: PMC9511595 DOI: 10.1016/j.ymeth.2022.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/10/2022] [Accepted: 08/15/2022] [Indexed: 01/03/2023] Open
Abstract
Prokaryotic adaptive immune systems use Clustered Regularly Interspaced Short Palindromic Repeats (CRISPRs) and CRISPR Associated (Cas) proteins to target and cleave foreign genetic elements in an RNA-guided manner [1-3]. Type VI CRISPR-Cas systems contain a single effector ribonuclease, Cas13, that binds and processes a CRISPR-RNA (crRNA; also known as a guide-RNA), forming an RNA-guided RNA-targeting effector complex [4,5]. Previous studies have shown that Cas13 can be engineered to target and modulate RNA processes in human cells, illustrating the versatility and specificity of Cas13 as an RNA knockdown (KD), splicing, editing, or imaging tool [6-8]. While Cas13 has been successfully used by several groups, our lab has observed significant variability in Cas13 KD ability depending which protocol is being followed [9-12]. To further understand this variability and generate a robust Cas13 KD protocol we thoroughly tested which Cas13 ortholog to use, the duration of KD experiments, the amount of plasmid DNA transfected, methods for analyzing KD efficiency, and report an optimized method for carrying out and analyzing Cas13 mediated RNA KD experiments. The method outlined in this paper illustrates a faster and more reliable protocol to iteratively test gRNA performance and target gene KD.
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Affiliation(s)
- Brandon Joseph Davis Burris
- Department of Biochemistry and Biophysics, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA; Center for RNA Biology, University of Rochester, Rochester, NY 14642, USA
| | - Adrian Moises Molina Vargas
- Center for RNA Biology, University of Rochester, Rochester, NY 14642, USA; Department of Biomedical Genetics, School of Medicine and Dentistry, University of Rochester, NY 14642, USA
| | - Brandon J Park
- Center for RNA Biology, University of Rochester, Rochester, NY 14642, USA; Department of Biomedical Genetics, School of Medicine and Dentistry, University of Rochester, NY 14642, USA
| | - Mitchell R O'Connell
- Department of Biochemistry and Biophysics, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA; Center for RNA Biology, University of Rochester, Rochester, NY 14642, USA.
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Functions of block of proliferation 1 during anterior development in Xenopus laevis. PLoS One 2022; 17:e0273507. [PMID: 36007075 PMCID: PMC9409556 DOI: 10.1371/journal.pone.0273507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 08/09/2022] [Indexed: 11/19/2022] Open
Abstract
Block of proliferation 1 (Bop1) is a nucleolar protein known to be necessary for the assembly of the 60S subunit of ribosomes. Here, we show a specific bop1 expression in the developing anterior tissue of the South African clawed frog Xenopus laevis. Morpholino oligonucleotide-mediated knockdown approaches demonstrated that Bop1 is required for proper development of the cranial cartilage, brain, and the eyes. Furthermore, we show that bop1 knockdown leads to impaired retinal lamination with disorganized cell layers. Expression of neural crest-, brain-, and eye-specific marker genes was disturbed. Apoptotic and proliferative processes, which are known to be affected during ribosomal biogenesis defects, are not hindered upon bop1 knockdown. Because early Xenopus embryos contain a large store of maternal ribosomes, we considered if Bop1 might have a role independent of de novo ribosomal biogenesis. At early embryonic stages, pax6 expression was strongly reduced in bop1 morphants and synergy experiments indicate a common signaling pathway of the two molecules, Bop1 and Pax6. Our studies imply a novel function of Bop1 independent of ribosomal biogenesis.
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Varvil MS, Bailey T, Dhawan D, Knapp DW, Ramos-Vara JA, dos Santos AP. The miRNome of canine invasive urothelial carcinoma. Front Vet Sci 2022; 9:945638. [PMID: 36072391 PMCID: PMC9443663 DOI: 10.3389/fvets.2022.945638] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/01/2022] [Indexed: 11/23/2022] Open
Abstract
Urothelial carcinoma (UC) comprises up to 2% of all naturally occurring neoplasia in dogs and can be challenging to diagnose. MicroRNAs (miRNAs) have been reported to be dysregulated in numerous diseases, including neoplasia. MiRNA expression has been evaluated in human UC, but there is limited information regarding the miRNA transcriptome of UC in dogs. Our study aimed to evaluate differential miRNA expression in bladder tissue collected from normal canine urothelium and canine invasive UC (iUC) to elucidate the dysregulated pathways in canine UC. Next-Generation RNA sequencing (RNA-Seq) was performed for dogs with UC (n = 29) and normal canine urothelium (n = 4). Raw RNA data were subjected to normalization, and pairwise comparison was performed using EdgeR with Benjamini-Hochberg FDR multiple testing correction (p < 0.05; >2-fold change) comparing tissue samples of normal urothelium to canine iUC samples. Principal component analysis and hierarchical cluster analysis were performed. MiRNA of FFPE tissue samples of separate iUC (n = 5) and normal urothelium (n = 5) were used to evaluate five miRNAs using RT-qPCR. Pathway analysis was performed utilizing miRWalk, STRING database, and Metascape utilizing KEGG pathways and GO terms databases. Twenty-eight miRNAs were differentially expressed (DE) by RNA-Seq. RT-qPCR confirmed that four miRNAs are significantly downregulated in UC compared to healthy urothelial samples (miR-105a, miR-143, miR-181a, and miR-214). Principal component analysis and hierarchical cluster analysis showed separation between miRNAs in iUC and the control group. The DE miRNAs are most often associated with gene silencing by miRNA, miRNAs in cancer, and miRNAs involved in DNA damage responses. Proteins involved include HRAS, KRAS, ARAF, RAF1, MAPK1, MAP2K1, MAPK3, FGFR3, EGFR, HBEGF, RASSF1, E2F2, E2F3, ERBB2, SRC, MMP1, and UP3KA. The differential expression of miRNAs in canine iUC compared to normal canine urothelial tissue indicates that these markers should be further evaluated for their potential role as diagnostic and therapeutic targets.
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Affiliation(s)
- Mara S. Varvil
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
| | - Taylor Bailey
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
| | - Deepika Dhawan
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
| | - Deborah W. Knapp
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
- Center for Cancer Research, Purdue University Center for Cancer Research, West Lafayette, IN, United States
| | - José A. Ramos-Vara
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
- Center for Cancer Research, Purdue University Center for Cancer Research, West Lafayette, IN, United States
| | - Andrea P. dos Santos
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN, United States
- *Correspondence: Andrea P. dos Santos
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Song J, Cho J, Park J, Hwang JH. Identification and validation of stable reference genes for quantitative real time PCR in different minipig tissues at developmental stages. BMC Genomics 2022; 23:585. [PMID: 35962323 PMCID: PMC9374586 DOI: 10.1186/s12864-022-08830-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 07/28/2022] [Indexed: 11/29/2022] Open
Abstract
Background Quantitative real time PCR (qPCR) is a powerful tool to evaluate mRNA expression level. However, reliable qPCR results require normalization with validated reference gene(s). In this study, we investigated stable reference genes in seven tissues according to four developmental stages in minipigs. Six candidate reference genes and one target gene (ACE2) were selected and qPCR was performed. BestKeeper, geNorm, NormFinder, and delta Ct method through the RefFinder web-based tool were used to evaluate the stability of candidate reference genes. To verify the selected stable genes, relative expression of ACE2 was calculated and compared with each other. Results As a result, HPRT1 and 18S genes had lower SD value, while HMBS and GAPDH genes had higher SD value in all samples. Using statistical algorithms, HPRT1 was the most stable gene, followed by 18S, β-actin, B2M, GAPDH, and HMBS. In intestine, all candidate reference genes exhibited similar patterns of ACE2 gene expression over time, whereas in liver, lung, and kidney, gene expression pattern normalized with stable reference genes differed from those normalized with less stable genes. When normalized with the most stable genes, the expression levels of ACE2 in minipigs highly increased in intestine and kidney at PND28, which is consistent with the ACE2 expression pattern in humans. Conclusions We suggest that HPRT1 and 18S are good choices for analyzing all these samples across the seven tissues and four developmental stages. However, this study can be a reference literature for gene expression experiments using minipig because reference gene should be validated and chosen according to experimental conditions. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08830-z.
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Affiliation(s)
- Jeongah Song
- Animal Model Research Group, Korea Institute of Toxicology, Jeongeup, 56212, Republic of Korea.
| | - Jeonghee Cho
- Animal Model Research Group, Korea Institute of Toxicology, Jeongeup, 56212, Republic of Korea.,Department of Bio-Non-Clinical Science, Graduate School of Konyang University of Bioconvergence, 158, Gwanjeodong-ro, Seo-gu, Daejeon, 35365, Republic of Korea
| | - Jeongsik Park
- Animal Model Research Group, Korea Institute of Toxicology, Jeongeup, 56212, Republic of Korea
| | - Jeong Ho Hwang
- Animal Model Research Group, Korea Institute of Toxicology, Jeongeup, 56212, Republic of Korea.
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Reference Genes across Nine Brain Areas of Wild Type and Prader-Willi Syndrome Mice: Assessing Differences in Igfbp7, Pcsk1, Nhlh2 and Nlgn3 Expression. Int J Mol Sci 2022; 23:ijms23158729. [PMID: 35955861 PMCID: PMC9369261 DOI: 10.3390/ijms23158729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 11/18/2022] Open
Abstract
Prader−Willi syndrome (PWS) is a complex neurodevelopmental disorder caused by the deletion or inactivation of paternally expressed imprinted genes at the chromosomal region 15q11−q13. The PWS-critical region (PWScr) harbors tandemly repeated non-protein coding IPW-A exons hosting the intronic SNORD116 snoRNA gene array that is predominantly expressed in brain. Paternal deletion of PWScr is associated with key PWS symptoms in humans and growth retardation in mice (PWScr model). Dysregulation of the hypothalamic−pituitary axis (HPA) is thought to be causally involved in the PWS phenotype. Here we performed a comprehensive reverse transcription quantitative PCR (RT-qPCR) analysis across nine different brain regions of wild-type (WT) and PWScr mice to identify stably expressed reference genes. Four methods (Delta Ct, BestKeeper, Normfinder and Genorm) were applied to rank 11 selected reference gene candidates according to their expression stability. The resulting panel consists of the top three most stably expressed genes suitable for gene-expression profiling and comparative transcriptome analysis of WT and/or PWScr mouse brain regions. Using these reference genes, we revealed significant differences in the expression patterns of Igfbp7, Nlgn3 and three HPA associated genes: Pcsk1, Pcsk2 and Nhlh2 across investigated brain regions of wild-type and PWScr mice. Our results raise a reasonable doubt on the involvement of the Snord116 in posttranscriptional regulation of Nlgn3 and Nhlh2 genes. We provide a valuable tool for expression analysis of specific genes across different areas of the mouse brain and for comparative investigation of PWScr mouse models to discover and verify different regulatory pathways affecting this complex disorder.
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Elizalde MM, Mojsiejczuk L, Speroni M, Bouzas B, Tadey L, Mammana L, Campos RH, Flichman DM. Molecular and biological characterization of hepatitis B virus subgenotype F1b clusters: Unraveling its role in hepatocarcinogenesis. Front Microbiol 2022; 13:946703. [PMID: 35966715 PMCID: PMC9363773 DOI: 10.3389/fmicb.2022.946703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 07/11/2022] [Indexed: 12/02/2022] Open
Abstract
Hepatitis B virus (HBV) subgenotype F1b infection has been associated with the early occurrence of hepatocellular carcinoma in chronically infected patients from Alaska and Peru. In Argentina, however, despite the high prevalence of subgenotype F1b infection, this relationship has not been described. To unravel the observed differences in the progression of the infection, an in-depth molecular and biological characterization of the subgenotype F1b was performed. Phylogenetic analysis of subgenotype F1b full-length genomes revealed the existence of two highly supported clusters. One of the clusters, designated as gtF1b Basal included sequences mostly from Alaska, Peru and Chile, while the other, called gtF1b Cosmopolitan, contained samples mainly from Argentina and Chile. The clusters were characterized by a differential signature pattern of eight nucleotides distributed throughout the genome. In vitro characterization of representative clones from each cluster revealed major differences in viral RNA levels, virion secretion, antigen expression levels, as well as in the localization of the antigens. Interestingly, a differential regulation in the expression of genes associated with tumorigenesis was also identified. In conclusion, this study provides new insights into the molecular and biological characteristics of the subgenotype F1b clusters and contributes to unravel the different clinical outcomes of subgenotype F1b chronic infections.
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Affiliation(s)
- María Mercedes Elizalde
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- *Correspondence: María Mercedes Elizalde,
| | - Laura Mojsiejczuk
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Micaela Speroni
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Belén Bouzas
- Unidad de Virología, Hospital de Infecciosas “Francisco J. Muñiz”, Buenos Aires, Argentina
| | - Luciana Tadey
- Unidad de Virología, Hospital de Infecciosas “Francisco J. Muñiz”, Buenos Aires, Argentina
| | - Lilia Mammana
- Unidad de Virología, Hospital de Infecciosas “Francisco J. Muñiz”, Buenos Aires, Argentina
| | - Rodolfo Héctor Campos
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Departamento de Microbiología, Inmunología, Biotecnología y Genética, Cátedra de Virología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Diego Martín Flichman
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), CONICET, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Webster SE, Ryali B, Clemente MJ, Tsuji NL, Holodick NE. Sex Influences Age-Related Changes in Natural Antibodies and CD5 + B-1 Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:1755-1771. [PMID: 35256511 PMCID: PMC8976758 DOI: 10.4049/jimmunol.2101150] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 01/30/2022] [Indexed: 11/19/2022]
Abstract
Natural Abs are primarily produced by B-1 cells and are essential for protection against Streptococcus pneumoniae The incidence and mortality rate for pneumococcal infection increases dramatically after age 65, disproportionately affecting males in both human and murine systems. To date, there is a significant gap in our understanding of the relationship among sex, aging, natural IgM efficacy, and the natural IgM repertoire. Our investigation demonstrates that the protective capacity of serum IgM against pneumococcal infection is maintained in IgM obtained from aged female mice but absent in IgM from aged male mice. To understand this difference in protective capacity, we examined serum Ig, discovering that the protective change was not associated with shifts in levels of phosphorylcholine (PC)- or pneumococcal capsular polysaccharide serotype 3-specific IgM. Interestingly, we observed that aged females have an increase in the total number of CD5+ B-1 cells, higher serum IL-5 levels, and a larger percentage of aged female CD5+ B-1 cells that express CD86 as compared with aged males. Furthermore, single-cell IgM repertoire analysis from peritoneal PC+, splenic PC+, and bone marrow CD5+ B-1 cell subsets demonstrated greater diversity with age and a higher level of germline status in female mice than previously observed in studies of aged male mice. Aged female CD5+ B-1 cells also expressed higher levels of transcripts associated with cell activity and self-renewal, such as Nanog and Hmga2 Taken together, these data indicate that females maintain a more diverse and active CD5+ B-1 cell pool and natural IgM repertoire, which has implications for sex-related susceptibility to infection and disease.
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Affiliation(s)
- Sarah E Webster
- Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI.,Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI
| | - Brinda Ryali
- Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI.,Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI.,Department of Medicine, Rush University Medical Center, Chicago, IL; and
| | - Michael J Clemente
- Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI.,Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI.,Flow Cytometry and Imaging Core, Western Michigan Homer Stryker M.D. School of Medicine, Kalamazoo, MI
| | - Naomi L Tsuji
- Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI.,Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI
| | - Nichol E Holodick
- Center for Immunobiology, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI; .,Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI
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Diehl D, Friedmann A, Bachmann HS. Evidence-based selection of reference genes for RT-qPCR assays in periodontal research. Clin Exp Dent Res 2022; 8:473-484. [PMID: 35106960 PMCID: PMC9033546 DOI: 10.1002/cre2.525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 12/18/2021] [Indexed: 11/17/2022] Open
Abstract
Objective To underline the necessity of adequate reference genes for real‐time quantitative polymerase chain reaction (RT‐qPCR) and evaluate a novel tool for condition‐specific reference gene selection. Background RT‐qPCR is a commonly used experimental technique that allows for highly sensitive analysis of gene transcription. Moreover, the use of internal reference genes as a means for relative quantification has rendered RT‐qPCR a straightforward method for a variety of sciences, including dentistry. However, the expressional stability of internal reference genes must be evaluated for every assay in order to account for possible quantification bias. Materials and Methods Herein, we used the software tool RefGenes to identify putatively stable reference genes with the help of microarray datasets and evaluated them. Additionally, we propose an evidence‐based workflow for adequate normalization of thusly identified genes. Human gingival fibroblasts (HGF‐hTert), human acute leukemia‐derived monocytes (THP‐1), and telomerase immortalized gingival keratinocytes (TIGKs) were subjected to set‐ups simulating various glycemic conditions and lipopolysaccharide challenges. Five common housekeeping genes (HKGs) and five genes from RefGenes were selected as targets and RT‐qPCR was performed subsequently. Then, normalization algorithms Bestkeeper, Normfinder, and geNorm were used for further analysis of the putative reference gene stability. Results RefGenes‐derived targets exhibited the highest stability values in THP‐1 and TIGK cell lines. Moreover, unacceptable standard variations were observed for some common HKG like β‐actin. However, common HKG exhibited good stability values in HGF‐hTert cells. Conclusion The results indicate that microarray‐based preselection of putative reference genes is a valuable refinement for RT‐qPCR studies. Accordingly, the present study proposes a straightforward workflow for evidence‐based preselection and validation of internal reference genes.
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Affiliation(s)
- Daniel Diehl
- Center for Biomedical Education and Research (ZBAF), Institute of Pharmacology and Toxicology, Faculty of Health, Witten/Herdecke University, Witten, Germany.,Department of Periodontology, School of Dentistry, Faculty of Health, Witten/Herdecke University, Witten, Germany
| | - Anton Friedmann
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/Herdecke University, Witten, Germany
| | - Hagen S Bachmann
- Center for Biomedical Education and Research (ZBAF), Institute of Pharmacology and Toxicology, Faculty of Health, Witten/Herdecke University, Witten, Germany
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Gnanagobal H, Cao T, Hossain A, Dang M, Hall JR, Kumar S, Van Cuong D, Boyce D, Santander J. Lumpfish ( Cyclopterus lumpus) Is Susceptible to Renibacterium salmoninarum Infection and Induces Cell-Mediated Immunity in the Chronic Stage. Front Immunol 2021; 12:733266. [PMID: 34880856 PMCID: PMC8645940 DOI: 10.3389/fimmu.2021.733266] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 10/19/2021] [Indexed: 02/02/2023] Open
Abstract
Renibacterium salmoninarum is a Gram-positive, intracellular pathogen that causes Bacterial Kidney Disease (BKD) in several fish species in freshwater and seawater. Lumpfish (Cyclopterus lumpus) is utilized as a cleaner fish to biocontrol sea lice infestation in Atlantic salmon (Salmo salar) farms. Atlantic salmon is susceptible to R. salmoninarum, and it can transfer the infection to other fish species. Although BKD outbreaks have not been reported in lumpfish, its susceptibility and immune response to R. salmoninarum is unknown. In this study, we evaluated the susceptibility and immune response of lumpfish to R. salmoninarum infection. Groups of lumpfish were intraperitoneally (i.p.) injected with either R. salmoninarum (1×107, 1×108, or 1×109 cells dose-1) or PBS (control). R. salmoninarum infection kinetics and mortality were followed for 98 days post-infection (dpi). Transcript expression levels of 33 immune-relevant genes were measured in head kidney (n = 6) of fish infected with 1×109 cells/dose and compared to the control at 28 and 98 dpi. Infected lumpfish displayed characteristic clinical signs of BKD. Lumpfish infected with high, medium, and low doses had a survival rate of 65%, 93%, and 95%, respectively. Mortality in the high-dose infected group stabilized after 50 dpi, but R. salmoninarum persisted in the fish tissues until 98 dpi. Cytokines (il1β, il8a, il8b), pattern recognition receptors (tlr5a), interferon-induced effectors (rsad2, mxa, mxb, mxc), and iron regulation (hamp) and acute phase reactant (saa5) related genes were up-regulated at 28 dpi. In contrast, cell-mediated adaptive immunity-related genes (cd4a, cd4b, ly6g6f, cd8a, cd74) were down-regulated at 28 dpi, revealing the immune suppressive nature of R. salmoninarum. However, significant upregulation of cd74 at 98 dpi suggests induction of cell-mediated immune response. This study showed that R. salmoninarum infected lumpfish in a similar fashion to salmonid fish species and caused a chronic infection, enhancing cell-mediated adaptive immune response.
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Affiliation(s)
- Hajarooba Gnanagobal
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada.,Department of Bio-systems Technology, Faculty of Technology, University of Jaffna, Kilinochchi, Sri Lanka
| | - Trung Cao
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Ahmed Hossain
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - My Dang
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Jennifer R Hall
- Aquatic Research Cluster, CREAIT Network, Ocean Sciences Centre, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Surendra Kumar
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada.,Ocean Frontier Institute, Ocean Sciences Centre, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Doan Van Cuong
- Southern Monitoring Center for Aquaculture Environment and Epidemic (MCE), Research Institute for Aquaculture No. 2, Ho Chi Minh City, Vietnam
| | - Danny Boyce
- The Dr. Joe Brown Aquatic Research Building (JBARB), Ocean Sciences Centre, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Javier Santander
- Marine Microbial Pathogenesis and Vaccinology Laboratory, Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
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40
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Lee YM, Cho H, Kim RO, In S, Kim SJ, Won EJ. Validation of reference genes for quantitative real-time PCR in chemical exposed and at different age's brackish water flea Diaphanosoma celebensis. Sci Rep 2021; 11:23691. [PMID: 34880360 PMCID: PMC8654955 DOI: 10.1038/s41598-021-03098-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 11/29/2021] [Indexed: 11/09/2022] Open
Abstract
Real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR), a primary approach for evaluating gene expression, requires an appropriate normalization strategy to confirm relative gene expression levels by comparison, and rule out variations that might occur in analytical procedures. The best option is to use a reference gene whose expression level is stable across various experimental conditions to compare the mRNA levels of a target gene. However, there is limited information on how the reference gene is differentially expressed at different ages (growth) in small invertebrates with notable changes such as molting. In this study, expression profiles of nine candidate reference genes from the brackish water flea, Diaphanosoma celebensis, were evaluated under diverse exposure to toxicants and according to growth. As a result, four different algorithms showed similar stabilities of genes for chemical exposures in the case of limited conditions using the same developmental stage (H2A was stable, whereas Act was fairly unstable in adults), while the results according to age showed a significantly different pattern in suite of candidate reference genes. This affected the results of genes EcRA and GST, which are involved in development and detoxification mechanisms, respectively. Our finding is the first step towards establishing a standardized real-time qRT-PCR analysis of this environmentally important invertebrate that has potential for aquatic ecotoxicology, particularly in estuarine environments.
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Affiliation(s)
- Young-Mi Lee
- Department of Biotechnology, College of Convergence Engineering, Sangmyung University, Seoul, 03016, Republic of Korea.
| | - Hayoung Cho
- Department of Biotechnology, College of Convergence Engineering, Sangmyung University, Seoul, 03016, Republic of Korea
| | - Ryeo-Ok Kim
- Department of Biotechnology, College of Convergence Engineering, Sangmyung University, Seoul, 03016, Republic of Korea.,Division of Chemical Research, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon, 22689, Korea
| | - Soyeon In
- Department of Biotechnology, College of Convergence Engineering, Sangmyung University, Seoul, 03016, Republic of Korea
| | - Se-Joo Kim
- Genome Editing Research Center, Korea Research Institute Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Eun-Ji Won
- Department of Marine Science and Convergent Technology, Hanyang University, Ansan, 15588, Republic of Korea.
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41
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Timoshenko OS, Khmeleva SA, Poverennaya EV, Kiseleva YY, Kurbatov LK, Radko SP, Buromski IV, Markin SS, Lisitsa AV, Archakov AI, Ponomarenko EA. [PCR analysis of the expression of chromosome 18 genes in human liver tissue: interindividual variability]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2021; 67:418-426. [PMID: 34730555 DOI: 10.18097/pbmc20216705418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Using human chromosome 18 (Ch18) genes as an example, a PCR analysis of the interindividual variability of gene expression in liver tissue was performed. Although the quantitative profiles of the Ch18 transcriptome, expressed in the number of cDNA copies per single cell, showed a high degree of correlation between donors (Pearson correlation coefficients ranged from 0.963 to 0.966), the expression of the significant number of genes (from 13% to 19%, depending on the method of experimental data normalization) varied by more than 4-fold when comparing donors pairwise. At the same time, the proportion of differentially expressed genes increased with a decrease in the level of their expression. It is shown that the higher quantitative variability of low-abundance transcripts is mainly not technical, but biological. Bioinformatic analysis of the interindividual variability of the differential expression of chromosome 18 genes in human liver tissue did not reveal any statistically significant groups of genes related to certain biological processes that indicated a rather transient nature of the interindividual variability of their expression, probably reflecting the response of cells of an individual to specific external stimuli.
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Affiliation(s)
| | - S A Khmeleva
- Institute of Biomedical Chemistry, Moscow, Russia
| | | | - Y Y Kiseleva
- Russian Scientific Center of Roentgenoradiology, Moscow, Russia
| | - L K Kurbatov
- Institute of Biomedical Chemistry, Moscow, Russia
| | - S P Radko
- Institute of Biomedical Chemistry, Moscow, Russia
| | - I V Buromski
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - S S Markin
- Institute of Biomedical Chemistry, Moscow, Russia
| | - A V Lisitsa
- Institute of Biomedical Chemistry, Moscow, Russia
| | - A I Archakov
- Institute of Biomedical Chemistry, Moscow, Russia
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42
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Feitosa NM, da Costa Rodrigues B, Petry AC, Nocchi KJCV, de Moraes Brindeiro R, Zilberberg C, Monteiro-de-Barros C, Mury FB, de Souza-Menezes J, Nepomuceno-Silva JL, da Silva ML, de Medeiros MJ, de Souza Gestinari R, da Silva de Alvarenga A, Pozzobon APB, Silva CAO, das Graças Dos Santos D, Silvestre DH, de Sousa GF, de Almeida JF, da Silva JN, Brandão LM, de Oliveira Drummond L, Neto LRG, de Mello Carpes R, Dos Santos RC, Portal TM, Tanuri A, Nunes-da-Fonseca R. Molecular testing and analysis of disease spreading during the emergence of COVID-19 in Macaé, the Brazilian National Capital of Oil. Sci Rep 2021; 11:20121. [PMID: 34635707 PMCID: PMC8505656 DOI: 10.1038/s41598-021-99475-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 09/21/2021] [Indexed: 01/12/2023] Open
Abstract
The Brazilian strategy to overcome the spread of COVID-19 has been particularly criticized due to the lack of a national coordinating effort and an appropriate testing program. Here, a successful approach to control the spread of COVID-19 transmission is described by the engagement of public (university and governance) and private sectors (hospitals and oil companies) in Macaé, state of Rio de Janeiro, Brazil, a city known as the National Oil Capital. In 2020 between the 17th and 38th epidemiological week, over two percent of the 206,728 citizens were subjected to symptom analysis and RT-qPCR testing by the Federal University of Rio de Janeiro, with positive individuals being notified up to 48 h after swab collection. Geocodification and spatial cluster analysis were used to limit COVID-19 spreading in Macaé. Within the first semester after the outbreak of COVID-19 in Brazil, Macaé recorded 1.8% of fatalities associated with COVID-19 up to the 38th epidemiological week, which was at least five times lower than the state capital (10.6%). Overall, considering the successful experience of this joint effort of private and public engagement in Macaé, our data suggest that the development of a similar strategy countrywise could have contributed to a better control of the COVID-19 spread in Brazil. Quarantine decree by the local administration, comprehensive molecular testing coupled to scientific analysis of COVID-19 spreading, prevented the catastrophic consequences of the pandemic as seen in other populous cities within the state of Rio de Janeiro and elsewhere in Brazil.
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Affiliation(s)
- Natália Martins Feitosa
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Bruno da Costa Rodrigues
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Ana Cristina Petry
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Keity Jaqueline Chagas Vilela Nocchi
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Rodrigo de Moraes Brindeiro
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, 21941-902, Brazil
| | - Carla Zilberberg
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Cintia Monteiro-de-Barros
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Flavia Borges Mury
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Jackson de Souza-Menezes
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - José Luciano Nepomuceno-Silva
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Manuela Leal da Silva
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Marcio José de Medeiros
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Raquel de Souza Gestinari
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Alessandra da Silva de Alvarenga
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Allan Pierre Bonetti Pozzobon
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Carina Azevedo Oliveira Silva
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Daniele das Graças Dos Santos
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Diego Henrique Silvestre
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Graziele Fonseca de Sousa
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Janimayri Forastieri de Almeida
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Jhenifer Nascimento da Silva
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Layza Mendes Brandão
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Leandro de Oliveira Drummond
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Lupis Ribeiro Gomes Neto
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Raphael de Mello Carpes
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Renata Coutinho Dos Santos
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Taynan Motta Portal
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil
| | - Amilcar Tanuri
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, 21941-902, Brazil.
| | - Rodrigo Nunes-da-Fonseca
- Instituto de Biodiversidade e Sustentabilidade-NUPEM, Universidade Federal do Rio de Janeiro (UFRJ), Av. São José do Barreto 764, Macaé, 27965-550, Brazil.
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Lopresti MW, Cui W, Abernathy B, Fredrickson G, Barrow F, Desai AS, Revelo XS, Mashek D. Hepatic Lysosomal Acid Lipase Overexpression Worsens Hepatic Inflammation in Mice Fed a Western Diet. J Lipid Res 2021; 62:100133. [PMID: 34624333 PMCID: PMC8556525 DOI: 10.1016/j.jlr.2021.100133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/16/2021] [Accepted: 09/23/2021] [Indexed: 02/07/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is characterized by the accumulation of lipid droplets in hepatocytes. NAFLD development and progression is associated with an increase in hepatic cholesterol levels and decreased autophagy and lipophagy flux. Previous studies have shown that the expression of lysosomal acid lipase (LAL), encoded by the gene LIPA, which can hydrolyze both triglyceride and cholesteryl esters, is inversely correlated with the severity of NAFLD. In addition, ablation of LAL activity results in profound NAFLD. Based on this, we predicted that overexpressing LIPA in the livers of mice fed a Western diet would prevent the development of NAFLD. As expected, mice fed the Western diet exhibited numerous markers of NAFLD, including hepatomegaly, lipid accumulation, and inflammation. Unexpectedly, LAL overexpression did not attenuate steatosis and had only minor effects on neutral lipid composition. However, LAL overexpression exacerbated inflammatory gene expression and infiltration of immune cells in mice fed the Western diet. LAL overexpression also resulted in abnormal phagosome accumulation and lysosomal lipid accumulation depending upon the dietary treatment. Overall, we found that hepatic overexpression of LAL drove immune cell infiltration and inflammation and did not attenuate the development of NAFLD, suggesting that targeting LAL expression may not be a viable route to treat NAFLD in humans.
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Affiliation(s)
- Michael W Lopresti
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis MN
| | - Wenqi Cui
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis MN
| | - Breann Abernathy
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis MN
| | - Gavin Fredrickson
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis MN
| | - Fanta Barrow
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis MN
| | - Arnav S Desai
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis MN
| | - Xavier S Revelo
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis MN
| | - Douglas Mashek
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis MN; Department of Medicine, Division of Diabetes, Endocrinology and Metabolism, University of Minnesota, Minneapolis MN.
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Ye S, Ma F, Mahmood DFD, Meyer-Siegler KL, Menard RE, Hunt DE, Leng L, Bucala R, Vera PL. Intravesical CD74 and CXCR4, macrophage migration inhibitory factor (MIF) receptors, mediate bladder pain. PLoS One 2021; 16:e0255975. [PMID: 34424927 PMCID: PMC8382170 DOI: 10.1371/journal.pone.0255975] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/27/2021] [Indexed: 11/19/2022] Open
Abstract
Background Activation of intravesical protease activated receptor 4 (PAR4) leads to release of urothelial macrophage migration inhibitory factor (MIF). MIF then binds to urothelial MIF receptors to release urothelial high mobility group box-1 (HMGB1) and elicit bladder hyperalgesia. Since MIF binds to multiple receptors, we investigated the contribution of individual urothelial MIF receptors to PAR4-induced HMGB1 release in vivo and in vitro and bladder pain in vivo. Methodology/Principal findings We tested the effect of intravesical pre-treatment with individual MIF or MIF receptor (CD74, CXCR4, CXCR2) antagonists on PAR4-induced HMGB1 release in vivo (female C57/BL6 mice) and in vitro (primary human urothelial cells) and on PAR4-induced bladder hyperalgesia in vivo (mice). In mice, PAR4 induced HMGB1 release and bladder hyperalgesia through activation of intravesical MIF receptors, CD74 and CXCR4. CXCR2 was not involved in these effects. In primary urothelial cells, PAR4-induced HMGB1 release through activation of CD74 receptors. Micturition parameters in mice were not changed by any of the treatments. Conclusions/Significance Urothelial MIF receptors CD74 and CXCR4 mediate bladder pain through release of urothelial HMGB1. This mechanism may set up persistent pain loops in the bladder and warrants further investigation. Urothelial CD74 and CXCR4 may provide novel targets for interrupting bladder pain.
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MESH Headings
- Adult
- Animals
- Antigens, Differentiation, B-Lymphocyte/genetics
- Antigens, Differentiation, B-Lymphocyte/metabolism
- Female
- HMGB1 Protein/genetics
- HMGB1 Protein/metabolism
- Histocompatibility Antigens Class II/genetics
- Histocompatibility Antigens Class II/metabolism
- Humans
- Hyperalgesia/etiology
- Hyperalgesia/metabolism
- Hyperalgesia/pathology
- Macrophage Migration-Inhibitory Factors/genetics
- Macrophage Migration-Inhibitory Factors/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- Receptors, CXCR4/genetics
- Receptors, CXCR4/metabolism
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Receptors, Thrombin/genetics
- Receptors, Thrombin/metabolism
- Urinary Bladder/metabolism
- Urinary Bladder/pathology
- Young Adult
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Affiliation(s)
- Shaojing Ye
- Research & Development, Lexington VA Health Care System, Lexington, KY, United States of America
| | - Fei Ma
- Research & Development, Lexington VA Health Care System, Lexington, KY, United States of America
| | - Dlovan F. D. Mahmood
- Research & Development, Lexington VA Health Care System, Lexington, KY, United States of America
| | | | - Raymond E. Menard
- Department of Natural Sciences, St Petersburg College, St Petersburg, FL, United States of America
| | - David E. Hunt
- Research & Development, Lexington VA Health Care System, Lexington, KY, United States of America
| | - Lin Leng
- Department of Internal Medicine, Yale University, New Haven, CT, United States of America
| | - Richard Bucala
- Department of Internal Medicine, Yale University, New Haven, CT, United States of America
| | - Pedro L. Vera
- Research & Development, Lexington VA Health Care System, Lexington, KY, United States of America
- Department of Physiology, University of Kentucky, Lexington, KY, United States of America
- * E-mail:
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45
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Krasnov G, Shkrigunov T, Radko S, Ptitsyn K, Shapovalova V, Timoshenko O, Khmeleva S, Kurbatov L, Kiseleva Y, Ilgisonis E, Kiseleva O, Vakhrushev I, Tsvetkova A, Buromski I, Markin S, Archakov A, Lisitsa A, Ponomarenko E. Human Chr18 transcriptome dataset combined from the Illumina HiSeq, ONT MinION, and qPCR data. Data Brief 2021; 36:107130. [PMID: 34095379 PMCID: PMC8166769 DOI: 10.1016/j.dib.2021.107130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/26/2021] [Accepted: 05/03/2021] [Indexed: 11/01/2022] Open
Abstract
The chromosome-centric dataset was created by applying several technologies of transcriptome profiling. The described dataset is available at NCBI repository (BioProject ID PRJNA635536). The dataset referred to the same type of tissue, cell lines, transcriptome sequencing technologies, and was accomplished in a period of 8 years (the first data were obtained in 2013 while the last ones - in 2020). The high-throughput sequencing technologies were employed along with the quantitative PCR (qPCR) approach, for data generation using the gene expression level assessment. qPCR was performed for a limited group of genes, encoded on human chromosome 18, for the Russian part of the Chromosome-Centric Human Proteome Project. The data of high-throughput sequencing are provided as Excel spreadsheets, where the data on FPKM and TMP values were evaluated for the whole transcriptome with both Illumina HiSeq and Oxford Nanopore Technologies MinION sequencing.
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Affiliation(s)
- George Krasnov
- Institute of Biomedical Chemistry, Moscow, Russia.,Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.,Mechnikov Research Institute of Vaccines and Sera, Moscow, Russia
| | | | - Sergey Radko
- Institute of Biomedical Chemistry, Moscow, Russia
| | | | - Valeriya Shapovalova
- Centre for Strategic Planning and Management of Biomedical Health Risks, Federal Medical Biological Agency, Moscow, Russia
| | | | | | | | - Yana Kiseleva
- Russian Scientific Center of Roentgen Radiology, Moscow, Russia
| | | | | | | | | | - Ivan Buromski
- Department of Forensic Medicine, Faculty of General Medicine, Pirogov Russian National Research Medical University, Moscow, Russia
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46
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Briens JM, Subramaniam M, Kilgour A, Loewen ME, Desai KM, Adolphe JL, Zatti KM, Drew MD, Weber LP. Glycemic, insulinemic and methylglyoxal postprandial responses to starches alone or in whole diets in dogs versus cats: Relating the concept of glycemic index to metabolic responses and gene expression. Comp Biochem Physiol A Mol Integr Physiol 2021; 257:110973. [PMID: 33933629 DOI: 10.1016/j.cbpa.2021.110973] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 10/21/2022]
Abstract
Species differences between domestic cats (Felis catus) and dogs (Canis familiaris) has led to differences in their ability to digest, absorb and metabolize carbohydrates through poorly characterized mechanisms. The current study aimed to first examine biopsied small intestine, pancreas, liver and skeletal muscle from laboratory beagles and domestic cats for mRNA expression of key enzymes involved in starch digestion (amylase), glucose transport (sodium-dependent SGLTs and -independent glucose transporters, GLUT) and glucose metabolism (hexokinase and glucokinase). Cats had lower mRNA expression of most genes examined in almost all tissues compared to dogs (p < 0.05). Next, postprandial glucose, insulin, methylglyoxal (a toxic glucose metabolite) and d-lactate (metabolite of methylglyoxal) after single feedings of different starch sources were tested in fasted dogs and cats. After feeding pure glucose, peak postprandial blood glucose and methylglyoxal were surprisingly similar between dogs and cats, except cats had a longer time to peak and a greater area under the curve consistent with lower glycolytic enzyme expression. After feeding starches or whole diets to dogs, postprandial glycemic response, glycemic index, insulin, methylglyoxal and d-lactate followed reported glycemic index trends in humans. In contrast, cats showed very low to negligible postprandial glycemic responses and low insulin after feeding different starch sources, but not whole diets, with no relationship to methylglyoxal or d-lactate. Thus, the concept of glycemic index appears valid in dogs, but not cats. Differences in amylase, glucose transporters, and glycolytic enzymes are consistent with species differences in starch and glucose handling between cats and dogs.
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Affiliation(s)
- Jennifer M Briens
- Toxicology Graduate Program, University of Saskatchewan, Saskatoon, SK S7N 5B3, Canada
| | - Marina Subramaniam
- Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Alyssa Kilgour
- Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Matthew E Loewen
- Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Kaushik M Desai
- Pharmacology & Physiology, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Jennifer L Adolphe
- Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Kyla M Zatti
- Animal & Poultry Science, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
| | - Murray D Drew
- Animal & Poultry Science, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
| | - Lynn P Weber
- Toxicology Graduate Program, University of Saskatchewan, Saskatoon, SK S7N 5B3, Canada; Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada.
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47
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Eisfeld J, Kraus A, Ronge C, Jagst M, Brandenburg VB, Narberhaus F. A LysR-type transcriptional regulator controls the expression of numerous small RNAs in Agrobacterium tumefaciens. Mol Microbiol 2021; 116:126-139. [PMID: 33560537 DOI: 10.1111/mmi.14695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 01/08/2023]
Abstract
Small RNAs (sRNAs) are universal posttranscriptional regulators of gene expression and hundreds of sRNAs are frequently found in each and every bacterium. In order to coordinate cellular processes in response to ambient conditions, many sRNAs are differentially expressed. Here, we asked how these small regulators are regulated using Agrobacterium tumefaciens as a model system. Among the best-studied sRNAs in this plant pathogen are AbcR1 regulating numerous ABC transporters and PmaR, a regulator of peptidoglycan biosynthesis, motility, and ampicillin resistance. We report that the LysR-type regulator VtlR (also known as LsrB) controls expression of AbcR1 and PmaR. A vtlR/lsrB deletion strain showed growth defects, was sensitive to antibiotics and severely compromised in plant tumor formation. Transcriptome profiling by RNA-sequencing revealed more than 1,200 genes with altered expression in the mutant. Consistent with the function of VtlR/LsrB as regulator of AbcR1, many ABC transporter genes were affected. Interestingly, the transcription factor did not only control the expression of AbcR1 and PmaR. In the mutant, 102 sRNA genes were significantly up- or downregulated. Thus, our study uncovered VtlR/LsrB as the master regulator of numerous sRNAs. Thereby, the transcriptional regulator harnesses the regulatory power of sRNAs to orchestrate the expression of distinct sub-regulons.
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Affiliation(s)
- Jessica Eisfeld
- Microbial Biology, Ruhr University Bochum, Bochum, Germany.,Medical Microbiology, Ruhr University Bochum, Bochum, Germany
| | | | | | - Michelle Jagst
- Microbial Biology, Ruhr University Bochum, Bochum, Germany
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48
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Wang Y, Qi H, Zhang C, Guo Y, Yao Y, Feng X, Fan S, Han Y, Yuan Z, Weng Q, Zhang H. The seasonal profile of proliferation and apoptosis in the prostate gland of the wild ground squirrel (Spermophilus dauricus). Comp Biochem Physiol A Mol Integr Physiol 2020; 253:110862. [PMID: 33276131 DOI: 10.1016/j.cbpa.2020.110862] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 11/14/2020] [Accepted: 11/29/2020] [Indexed: 10/22/2022]
Abstract
The seasonal cycle of growth and regression in the prostate gland of wild ground squirrel provide a unique research model to understand the morphological changes of prostate glands. Our previous studies showed that the local production of dihydrotestosterone could affect the morphology and function of the prostate gland in either an autocrine or paracrine manner. In the present study, we attempted to gain more insight into this process by investigating the expression of key factors implicated in cell proliferation, apoptosis, and the cell cycle, including mechanistic target of rapamycin (mTOR), cyclin-D2, p21, p27 and retinoblastoma 1 (pRB). Morphological and histological observations confirmed that the prostate increased significantly in both size and weight during the breeding season. Positive immunostaining for proliferating cell nuclear antigen (PCNA) was mainly localized to the prostate epithelial cells during the breeding season, which is significantly higher in the prostate gland during the breeding season (2470 ± 81/mm2) than that in the nonbreeding season (324 ± 54/mm2). However, there was no significant difference in the prostate gland when compared between the breeding and nonbreeding seasons, with regards to TUNEL staining. Moreover, cell cycle regulators were mainly localized to the epithelial cells, including mTOR, cyclin-D2, p21, p27 and pRB. the immunostaining of mTOR and cyclin D2 were stronger during the breeding season, whereas the immunostaining of p27 and pRB were stronger during the nonbreeding season. The mRNA expression levels of mTOR, cyclin D2, and PCNA, were higher during the breeding season while those of p27 and p21 were higher during the nonbreeding season. Collectively, this study profiled the distinct expression pattern of key cell cycle regulators throughout the breeding and nonbreeding seasons. Collectively, these factors may play important roles in regulating the seasonal growth and regression of the prostatic epithelium in the wild ground squirrel.
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Affiliation(s)
- Yi Wang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Hongyu Qi
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Chunjiao Zhang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yuanyuan Guo
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yuchen Yao
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Xiaohang Feng
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Sijie Fan
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Yingying Han
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Zhengrong Yuan
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Qiang Weng
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Haolin Zhang
- Laboratory of Animal Physiology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China.
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49
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Ban M, Liao W, Baker A, Compston A, Thorpe J, Molyneux P, Fraser M, Khadake J, Jones J, Coles A, Sawcer S. Transcript specific regulation of expression influences susceptibility to multiple sclerosis. Eur J Hum Genet 2020; 28:826-834. [PMID: 31932686 DOI: 10.1038/s41431-019-0569-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 11/03/2019] [Accepted: 12/17/2019] [Indexed: 01/01/2023] Open
Abstract
Genome-wide association studies (GWAS) have identified over 100 loci containing single nucleotide variants (SNVs) that influence the risk of developing multiple sclerosis (MS). Most of these loci lie in non-coding regulatory regions of the genome that are active in immune cells and are therefore thought to modify risk by altering the expression of key immune genes. To explore this hypothesis we screened genes flanking MS-associated variants for evidence of allele specific expression (ASE) by quantifying the transcription of coding variants in linkage disequilibrium with MS-associated SNVs. In total, we were able to identify and successfully analyse 200 such coding variants (from 112 genes) in both CD4+ and CD8+ T cells from 106 MS patients and 105 controls. Fifty-six of these coding variants (from 43 genes) showed statistically significant evidence of ASE in one or both cell types. In the Lck interacting transmembrane adaptor 1 gene (LIME1), for example, we were able to show that in both cell types, the MS-associated variant rs2256814 increased the expression of some transcripts while simultaneously reducing the expression of other transcripts. In CD4+ cells from an additional independent set of 96 cases and 93 controls we were able to replicate the effect of this SNV on the balance of alternate LIME1 transcripts using qPCR (p = 5 × 10-24). Our data thus indicate that some of the MS-associated SNVs identified by GWAS likely exert their effects on risk by distorting the balance of alternate transcripts rather than by changing the overall level of gene expression.
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Affiliation(s)
- Maria Ban
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK.
| | - Wenjia Liao
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - Amie Baker
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - Alastair Compston
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - John Thorpe
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - Paul Molyneux
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - Mary Fraser
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - Jyoti Khadake
- NIHR BioResource for Translational Research, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust Hills Road, Box 299, Cambridge, CB2 0QQ, UK
| | - Joanne Jones
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - Alasdair Coles
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
| | - Stephen Sawcer
- Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Box 165, Hills Road, Cambridge, CB2 0QQ, UK
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Filatov MA, Nikishin DA, Khramova YV, Semenova ML. The in vitro Analysis of Quality of Ovarian Follicle Culture Systems Using Time-Lapse Microscopy and Quantitative Real-Time PCR. J Reprod Infertil 2020; 21:94-106. [PMID: 32500012 PMCID: PMC7253941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The aim of ovarian follicle in vitro culture is to obtain mature oocytes. To evaluate the efficiency of in vitro culture system, the status of the cultured oocyte can be analyzed. METHODS The preantral ovarian follicles retrieved from 14-day-old C57Bl/6J mice were cultured in 3D alginate hydrogel. The status of oocytes obtained from mature (3 months old, group A) and immature (3 weeks old, group B) mice was compared to the status of oocytes retrieved from ovarian follicles cultured in vitro (Group C) using qRT-PCR analysis and time-lapse microscopy. In the qRT-PCR analysis, 8 samples for group A (80 oocytes), 8 samples for group B (80 oocytes), and 6 samples for group C (60 oocytes) were included. Time-lapse analysis was performed in group A (oocytes n=31), group B (n=45), and group C (n=21). Statistical analysis was done by Kruskal-Wallis and chi-square tests and differences were considered statistically significant if p<0,05. RESULTS The diameter of group C oocytes is lower in comparison to group A oocytes (67 μm vs. 75 μm, correspondingly). Groups B and C oocytes exhibited delayed meiosis in comparison to group A oocytes. Expression levels of six oocyte maturation genes (Ccnb, CDK1, Ccnh, Wee2, Mos and Epab) were evaluated using qRT-PCR analysis. Expression levels of Ccnh and Epab are lowered in group C oocytes compared to the expression levels of these genes in groups A and B oocytes (p< 0.05). CONCLUSION Oocytes obtained after ovarian follicles in vitro culture have reduced development competence, future fundamental changes of in vitro culture systems can be expected.
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Affiliation(s)
- Maxim Alexeevich Filatov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia,Corresponding Author: Maxim Alexeevich Filatov, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia E-mail:
| | - Denis Alexandrovich Nikishin
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia, N.K. Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia
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