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Dode MAN, Capobianco N, Vargas LN, Mion B, Kussano NR, Spricigo JF, Franco MM. Seminal cell-free DNA as a potential marker for in vitro fertility of Nellore bulls. J Assist Reprod Genet 2024; 41:1357-1370. [PMID: 38438770 PMCID: PMC11143116 DOI: 10.1007/s10815-024-03068-y] [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: 12/13/2023] [Accepted: 02/16/2024] [Indexed: 03/06/2024] Open
Abstract
PURPOSE This study aimed to identify a marker for freezability and in vitro fertility of sperm samples before freezing. METHODS Semen was collected from nine Nelore bulls; half of the ejaculate was used for seminal plasma cell-free DNA (cfDNA) quantification, and the other half was cryopreserved. Evaluation of sperm movement using computer-assisted semen analysis and plasma membrane integrity and stability, acrosomal integrity, apoptosis, and mitochondrial potential using flow cytometry were performed on fresh and frozen/thawed semen at 0, 3, 6, and 12 h after thawing. Frozen/thawed sperm was also used for in vitro embryo production. cfDNA was extracted from each bull, and the total DNA and number of cell-free mitochondrial DNA (cfmtDNA) copies were quantified. Semen from each animal was used for IVF, and cleavage, blastocyst formation, and cell counts were evaluated. RESULTS Two groups were formed and compared based on the concentrations of cfDNA and cfmDNA present: low-cfDNA and high-cfDNA and low-cfmtDNA and high-cfmtDNA. Up to 12 h post-thawing, there were no differences between the groups in the majority of the sperm parameters evaluated. Cleavage, day 6 and 7 blastocyst rates, and the number of cells were higher in the high cfDNA group than in the low cfDNA group. Similar results were observed for cfmtDNA, except for the number of cells, which was similar between the groups. CONCLUSION The concentration of cfDNA and the relative number of copies of cfmtDNA in seminal plasma cannot predict the freezability of semen but can be used to predict in vitro embryo production.
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Affiliation(s)
- Margot A N Dode
- Institute of Biology, University of Brasilia, Brasília, DF, Brazil.
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil.
| | - Natalia Capobianco
- Institute of Biology, University of Brasilia, Brasília, DF, Brazil
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil
| | - Luna Nascimento Vargas
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil
| | - Bruna Mion
- Department of Animal Science, University of Guelph, Guelph, ON, Canada
| | - Nayara Ribeiro Kussano
- Institute of Biology, University of Brasilia, Brasília, DF, Brazil
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil
| | - José Felipe Spricigo
- School of Veterinary and Animal Science, Federal University of Goiás, Goiania, GO, Brazil
| | - Mauricio Machaim Franco
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil
- School of Veterinary Medicine, Federal University of Uberlândia, Uberlandia, Minas Gerais, Brazil
- Institute of Biotechnology, Federal University of Uberlândia, Uberlandia, Minas Gerais, Brazil
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2
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Patlar B. On the Role of Seminal Fluid Protein and Nucleic Acid Content in Paternal Epigenetic Inheritance. Int J Mol Sci 2022; 23:ijms232314533. [PMID: 36498858 PMCID: PMC9739459 DOI: 10.3390/ijms232314533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/10/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022] Open
Abstract
The evidence supports the occurrence of environmentally-induced paternal epigenetic inheritance that shapes the offspring phenotype in the absence of direct or indirect paternal care and clearly demonstrates that sperm epigenetics is one of the major actors mediating these paternal effects. However, in most animals, while sperm makes up only a small portion of the seminal fluid, males also have a complex mixture of proteins, peptides, different types of small noncoding RNAs, and cell-free DNA fragments in their ejaculate. These seminal fluid contents (Sfcs) are in close contact with the reproductive cells, tissues, organs, and other molecules of both males and females during reproduction. Moreover, their production and use are adjusted in response to environmental conditions, making them potential markers of environmentally- and developmentally-induced paternal effects on the next generation(s). Although there is some intriguing evidence for Sfc-mediated paternal effects, the underlying molecular mechanisms remain poorly defined. In this review, the current evidence regarding the links between seminal fluid and environmental paternal effects and the potential pathways and mechanisms that seminal fluid may follow in mediating paternal epigenetic inheritance are discussed.
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Affiliation(s)
- Bahar Patlar
- Animal Ecology, Department of Zoology, Martin-Luther University Halle-Wittenberg, 06099 Halle (Saale), Germany
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3
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Extracellular vesicles from seminal plasma improved development of in vitro-fertilized mouse embryos. ZYGOTE 2022; 30:619-624. [PMID: 35730539 DOI: 10.1017/s0967199422000041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In vitro fertilization (IVF) has wide application in human infertility and animal breeding. It is also used for research on reproduction, fertility and development. However, IVF embryos are still inferior to their in vivo counterparts. Some substances in seminal plasma appear to have important roles in embryo development, and during the traditional IVF procedure, the seminal plasma is washed away. In this study, extracellular vesicles (EVs) were concentrated from seminal plasma by ultracentrifugation, visualized using transmission electron microscopy, and particle size distributions and concentrations were determined with a NanoSight particle analyzer. We found particles of various sizes in the seminal plasma, the majority having diameters ranging from 100 to 200 nm and concentrations of 6.07 × 1010 ± 2.91 × 109 particles/ml. Addition of seminal plasma EVs (SP-EVs) to the IVF medium with mouse oocytes and sperm significantly increased the rate of blastocyst formation and the inner cell mass (ICM)/trophectoderm (TE) cell ratio, and reduced the apoptosis of blastocysts. Our findings provide new insights into the role of seminal plasma EVs in mediating embryo development and it suggests that SP-EVs may be used to improve the developmental competence of IVF embryos, which has important significance for assisted reproduction in animals and humans.
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4
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Udomruk S, Orrapin S, Pruksakorn D, Chaiyawat P. Size distribution of cell-free DNA in oncology. Crit Rev Oncol Hematol 2021; 166:103455. [PMID: 34464717 DOI: 10.1016/j.critrevonc.2021.103455] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/16/2022] Open
Abstract
Tumor-specific, circulating cell-free DNA (cfDNA) in liquid biopsy test is a novel promising biomarker in the advancement of cancer management, including early diagnosis, screening, prognosis, identification of actionable targets, and serial tumor monitoring. The specific size pattern of DNA fragments derived from cancer cells is observed to differ from that of cfDNA fragments shed by non-cancer cells. Research into the physiological and biological properties of cfDNA reveals the molecular signature carried by each cfDNA fragments, which can reflect their tissue origins, as well as the mutational profiles with significant genetic alterations. Understanding the fragmentation and size distribution of cfDNA might be a valuable hotspot in liquid biopsy research, with the potential to drive innovation in oncology.
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Affiliation(s)
- Sasimol Udomruk
- Center of Multidisciplinary Technology for Advanced Medicine (CMUTEAM), Faculty of Medicine, Chiang Mai University, Muang, Chiang Mai 50200, Thailand; Musculoskeletal Science and Translational Research Center (MSTR), Department of Orthopedics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Santhasiri Orrapin
- Musculoskeletal Science and Translational Research Center (MSTR), Department of Orthopedics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Dumnoensun Pruksakorn
- Center of Multidisciplinary Technology for Advanced Medicine (CMUTEAM), Faculty of Medicine, Chiang Mai University, Muang, Chiang Mai 50200, Thailand; Musculoskeletal Science and Translational Research Center (MSTR), Department of Orthopedics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; Department of Orthopedics, Faculty of Medicine, Chiang Mai University, 110 Intawaroros, Sriphoom, Muang, Chiang Mai 50200, Thailand.
| | - Parunya Chaiyawat
- Center of Multidisciplinary Technology for Advanced Medicine (CMUTEAM), Faculty of Medicine, Chiang Mai University, Muang, Chiang Mai 50200, Thailand; Musculoskeletal Science and Translational Research Center (MSTR), Department of Orthopedics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
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5
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Qasemi M, Mahdian R, Amidi F. Cell-free DNA discoveries in human reproductive medicine: providing a new tool for biomarker and genetic assays in ART. J Assist Reprod Genet 2021; 38:277-288. [PMID: 33421023 PMCID: PMC7884523 DOI: 10.1007/s10815-020-02038-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/13/2020] [Indexed: 02/02/2023] Open
Abstract
Cell-free DNAs (cfDNAs) are fragmented forms of DNA that are released into extracellular environments. Analyzing them, regarding either concentration or genetic/epigenetic status can provide helpful information about disorders, response to treatments, estimation of success rates, etc. Moreover, since they are presented in body fluids, evaluation of the aforementioned items would be achieved by less/non-invasive methods. In human reproduction field, it is required to have biomarkers for prediction of assisted reproduction techniques (ART) outcome, as well as some non-invasive procedures for genetic/epigenetic assessments. cfDNA is an appropriate candidate for providing the both approaches in ART. Recently, scientists attempted to investigate its application in distinct fields of reproductive medicine that resulted in discovering its applicability for biomarker and genetic/epigenetic analyses. However, due to some limitations, it has not reached to clinical administration yet. In this article, we have reviewed the current reported data with respect to advantages and limitations of cfDNA utilization in three fields of ART, reproduction of male and female, as well as in vitro developed embryos.
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Affiliation(s)
- Maryam Qasemi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Mahdian
- Molecular Medicine Department, Pasteur Institute of Iran, Tehran, Iran
| | - Fardin Amidi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
- Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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6
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Pös Z, Pös O, Styk J, Mocova A, Strieskova L, Budis J, Kadasi L, Radvanszky J, Szemes T. Technical and Methodological Aspects of Cell-Free Nucleic Acids Analyzes. Int J Mol Sci 2020; 21:ijms21228634. [PMID: 33207777 PMCID: PMC7697251 DOI: 10.3390/ijms21228634] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
Analyzes of cell-free nucleic acids (cfNAs) have shown huge potential in many biomedical applications, gradually entering several fields of research and everyday clinical care. Many biological properties of cfNAs can be informative to gain deeper insights into the function of the organism, such as their different types (DNA, RNAs) and subtypes (gDNA, mtDNA, bacterial DNA, miRNAs, etc.), forms (naked or vesicle bound NAs), fragmentation profiles, sequence composition, epigenetic modifications, and many others. On the other hand, the workflows of their analyzes comprise many important steps, from sample collection, storage and transportation, through extraction and laboratory analysis, up to bioinformatic analyzes and statistical evaluations, where each of these steps has the potential to affect the outcome and informational value of the performed analyzes. There are, however, no universal or standard protocols on how to exactly proceed when analyzing different cfNAs for different applications, at least according to our best knowledge. We decided therefore to prepare an overview of the available literature and products commercialized for cfNAs processing, in an attempt to summarize the benefits and limitations of the currently available approaches, devices, consumables, and protocols, together with various factors influencing the workflow, its processes, and outcomes.
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Affiliation(s)
- Zuzana Pös
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia; (Z.P.); (A.M.); (L.K.)
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia;
- Geneton Ltd., 841 04 Bratislava, Slovakia; (L.S.); (J.B.)
| | - Ondrej Pös
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia;
- Geneton Ltd., 841 04 Bratislava, Slovakia; (L.S.); (J.B.)
- Comenius University Science Park, Comenius University, 841 04 Bratislava, Slovakia;
| | - Jakub Styk
- Comenius University Science Park, Comenius University, 841 04 Bratislava, Slovakia;
- Faculty of Medicine, Institute of Medical Biology, Genetics and Clinical Genetics, 811 08 Bratislava, Slovakia
| | - Angelika Mocova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia; (Z.P.); (A.M.); (L.K.)
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia;
| | | | - Jaroslav Budis
- Geneton Ltd., 841 04 Bratislava, Slovakia; (L.S.); (J.B.)
- Comenius University Science Park, Comenius University, 841 04 Bratislava, Slovakia;
- Slovak Center of Scientific and Technical Information, 811 04 Bratislava, Slovakia
| | - Ludevit Kadasi
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia; (Z.P.); (A.M.); (L.K.)
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia;
| | - Jan Radvanszky
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, 845 05 Bratislava, Slovakia; (Z.P.); (A.M.); (L.K.)
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia;
- Comenius University Science Park, Comenius University, 841 04 Bratislava, Slovakia;
- Correspondence: (J.R.); (T.S.); Tel.: +421-2-60296637 (J.R.); +421-2-9026-8807 (T.S.)
| | - Tomas Szemes
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia;
- Geneton Ltd., 841 04 Bratislava, Slovakia; (L.S.); (J.B.)
- Comenius University Science Park, Comenius University, 841 04 Bratislava, Slovakia;
- Correspondence: (J.R.); (T.S.); Tel.: +421-2-60296637 (J.R.); +421-2-9026-8807 (T.S.)
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7
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Di Pizio P, Celton N, Menoud PA, Belloc S, Cohen Bacrie M, Belhadri-Mansouri N, Rives N, Cabry R, Benkhalifa M. Seminal cell-free DNA and sperm characteristic's: An added biomarker for male infertility investigation. Andrologia 2020; 53:e13822. [PMID: 33040391 DOI: 10.1111/and.13822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/08/2020] [Accepted: 07/26/2020] [Indexed: 12/24/2022] Open
Abstract
Cell-free DNA (Cf-DNA) fragments may constitute an easy-to-measure molecular tool for guiding the choice of care provided to infertile couples who benefit assisted reproductive technology (ART) programmes. Data on Cf-DNA levels in the seminal plasma of men with sperm alterations are scarce. The objective of the present study was to quantify the presence of Cf-DNA in semen by using a quantitative real-time PCR. We compared men with abnormal sperm characteristics (n = 21) with normospermic controls (n = 21). The PCR assay evidenced significantly higher mean Cf-DNA levels in patients with sperm abnormalities than in controls (2.09 versus 1.18 µg/ml, respectively; p = .0003). The Cf-DNA levels were notably higher in men with azoospermia (3.65 µg/ml, versus 1.34 µg/ml in matched controls; p = .03) and men with teratozoospermia (1.80 µg/ml, versus 1.29 µg/ml in matched controls; p = .008). Our data report a significant association between elevated Cf-DNA levels and sperm abnormalities. These results may open up new diagnostic and prognostic perspectives in male infertility.
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Affiliation(s)
- Pierre Di Pizio
- Reproductive Medicine & Biology, Amiens University, Amiens, France.,Reproductive Biology Laboratory, University Hospital Centre Rouen, Rouen, France
| | - Noemie Celton
- Reproductive Medicine & Biology, Amiens University, Amiens, France
| | - Pierre Alain Menoud
- Molecular Diagnostic Laboratory, Unilabs Laboratoire d'Analyses Medicales SA, Genève, Switzerland
| | - Stéphanie Belloc
- Laboratoire CERBA, Laboratoire Lavergne, Saint Ouen l'Aumone, France
| | | | | | - Nathalie Rives
- Reproductive Biology Laboratory, University Hospital Centre Rouen, Rouen, France
| | - Rosalie Cabry
- Reproductive Medicine & Biology, Amiens University, Amiens, France
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8
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Maldaner DR, Azzolin VF, Barbisan F, Mastela MH, Teixeira CF, Dihel A, Duarte T, Pellenz NL, Lemos LFC, Negretto CMU, da Cruz IBM, Duarte MMMF. In vitro effect of low-level laser therapy on the proliferative, apoptosis modulation, and oxi-inflammatory markers of premature-senescent hydrogen peroxide-induced dermal fibroblasts. Lasers Med Sci 2019; 34:1333-1343. [PMID: 30712124 DOI: 10.1007/s10103-019-02728-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 01/21/2019] [Indexed: 12/11/2022]
Abstract
Skin aging is a complex biological process induced by intrinsic and extrinsic factors which is characterized by clinical and cellular changes, especially dermal fibroblasts. It is possible that, some procedures, such as low-level laser therapy (LLLT), could decelerate this process. To test this hypothesis, this study evaluated the in vitro LLLT on dermal fibroblast cell line (HFF-1) with premature senescence H2O2-induced. HFF-1 cells were cultured in standardized conditions, and initially H2O2 exposed at different concentrations. Fibroblasts were also just exposed at different LLLT (660 nm) doses. From these curves, the lowest H2O2 concentration that induced indicators of premature senescence and the lowest LLLT doses that triggered fibroblast proliferation were used in all assays. Cellular mortality, proliferation, and the levels of oxidative, inflammatory cytokines, apoptotic markers, and of two growth signaling molecules (FGF-1 and KGF) were compared among treatments. The H2O2 at 50 μM concentration induced some fibroblast senescence markers and for LLLT, the best dose for treatment was 4 J (p < 0.001). The interaction between H2O2 at 50 μM and LLLT at 4 J showed partially reversion of the higher levels of DNA oxidation, CASP 3, CASP 8, IL-1B, IL-6, and INFy induced by H2O2 exposure. LLLT also trigger increase of IL-10 anti-inflammatory cytokine, FGF-1 and KGF levels. Cellular proliferation was also improved when fibroblasts treated with H2O2 were exposed to LLLT (p < 0.001). These results suggest that in fibroblast with some senescence characteristics H2O2-induced, the LLLT presented an important protective and proliferative action, reverting partially or totally negative effects triggering by H2O2.
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Affiliation(s)
- Daíse Raquel Maldaner
- Postgraduate Program of Pharmacology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Verônica Farina Azzolin
- Postgraduate Program of Gerontology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Fernanda Barbisan
- Postgraduate Program of Gerontology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil.
| | - Moisés Henrique Mastela
- Postgraduate Program of Gerontology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Cibele Ferreira Teixeira
- Postgraduate Program of Pharmacology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Alexandre Dihel
- Biogenomic Laboratory, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Thiago Duarte
- Postgraduate Program of Pharmacology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Neida Luiza Pellenz
- Postgraduate Program of Pharmacology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Luiz Fernando Cuozzo Lemos
- Postgraduate Program of Gerontology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | | | - Ivana Beatrice Mânica da Cruz
- Postgraduate Program of Pharmacology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
- Postgraduate Program of Gerontology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
| | - Marta Maria Medeiros Frescura Duarte
- Postgraduate Program of Pharmacology, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Santa Maria, 97105-900, Brazil
- Lutheran University of Brazil, BR 287, Km 252, Santa Maria, 97020-970, Brazil
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9
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Sheppard EC, Rogers S, Harmer NJ, Chahwan R. A universal fluorescence-based toolkit for real-time quantification of DNA and RNA nuclease activity. Sci Rep 2019; 9:8853. [PMID: 31222049 PMCID: PMC6586798 DOI: 10.1038/s41598-019-45356-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 05/31/2019] [Indexed: 12/12/2022] Open
Abstract
DNA and RNA nucleases play a critical role in a growing number of cellular processes ranging from DNA repair to immune surveillance. Nevertheless, many nucleases have unknown or poorly characterized activities. Elucidating nuclease substrate specificities and co-factors can support a more definitive understanding of cellular mechanisms in physiology and disease. Using fluorescence-based methods, we present a quick, safe, cost-effective, and real-time versatile nuclease assay, which uniquely studies nuclease enzyme kinetics. In conjunction with a substrate library we can now analyse nuclease catalytic rates, directionality, and substrate preferences. The assay is sensitive enough to detect kinetics of repair enzymes when confronted with DNA mismatches or DNA methylation sites. We have also extended our analysis to study the kinetics of human single-strand DNA nuclease TREX2, DNA polymerases, RNA, and RNA:DNA nucleases. These nucleases are involved in DNA repair, immune regulation, and have been associated with various diseases, including cancer and immune disorders.
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Affiliation(s)
- Emily C Sheppard
- Living Systems Institute, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK
| | - Sally Rogers
- Living Systems Institute, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK
| | - Nicholas J Harmer
- Living Systems Institute, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK
| | - Richard Chahwan
- Living Systems Institute, University of Exeter, Stocker Road, Exeter, EX4 4QD, UK. .,Institute of Experimental Immunology, University of Zurich, 8057, Zurich, Switzerland.
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10
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Ponti G, Manfredini M, Tomasi A. Non-blood sources of cell-free DNA for cancer molecular profiling in clinical pathology and oncology. Crit Rev Oncol Hematol 2019; 141:36-42. [PMID: 31212145 DOI: 10.1016/j.critrevonc.2019.06.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 09/19/2018] [Accepted: 06/04/2019] [Indexed: 12/12/2022] Open
Abstract
Liquid biopsy can quantify and qualify cell-free (cfDNA) and tumour-derived (ctDNA) DNA fragments in the bloodstream. CfDNA quantification and mutation analysis can be applied to diagnosis, follow-up and therapeutic management as novel oncologic biomarkers. However, some tumor-types release a low amount of DNA into the bloodstream, hampering diagnosis through standard liquid biopsy procedures. Several tumors, as such as brain, kidney, prostate, and thyroid cancer, are in direct contact with other body fluids and may be alternative sources for cfDNA and ctDNA. Non-blood sources of cfDNA/ctDNA useful as novel oncologic biomarkers include cerebrospinal fluids, urine, sputum, saliva, pleural effusion, stool and seminal fluid. Seminal plasma cfDNA, which can be analyzed with cost-effective procedures, may provide powerful information capable to revolutionize prostate cancer (PCa) patient diagnosis and management. In the near future, cfDNA analysis from non-blood biological liquids will become routine clinical practice for cancer patient diagnosis and management.
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Affiliation(s)
- Giovanni Ponti
- Department of Surgical, Medical, Dental & Morphological Sciences with Interest Transplant, Oncological & Regenerative Medicine, Division of Clinical Pathology, University of Modena & Reggio Emilia, Modena, Italy.
| | - Marco Manfredini
- Department of Surgical, Medical, Dental & Morphological Sciences with Interest Transplant, Oncological & Regenerative Medicine, Dermatology Unit, University of Modena & Reggio Emilia, Modena, Italy
| | - Aldo Tomasi
- Department of Surgical, Medical, Dental & Morphological Sciences with Interest Transplant, Oncological & Regenerative Medicine, Division of Clinical Pathology, University of Modena & Reggio Emilia, Modena, Italy
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11
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Fernandes MS, Barbisan F, Azzolin VF, do Prado-Lima PAS, Teixeira CF, da Cruz Jung IE, Assmann CE, Riffel RT, Duarte MMMF, Aguiar- Ribeiro EM, da Cruz IBM. Lithium is able to minimize olanzapine oxidative-inflammatory induction on macrophage cells. PLoS One 2019; 14:e0209223. [PMID: 30695037 PMCID: PMC6350970 DOI: 10.1371/journal.pone.0209223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 11/30/2018] [Indexed: 01/22/2023] Open
Abstract
Background Olanzapine (OLZ) is a second-generation antipsychotic drug used for treatment of schizophrenia, bipolar disorder, and other neuropsychiatric conditions. Undesirable side effects of OLZ include metabolic alterations associated with chronic oxidative-inflammation events. It is possible that lithium (Li), a mood modulator that exhibits anti-inflammatory properties may attenuate OLZ-induced oxi-inflammatory effects. Methodology To test this hypothesis we activated RAW 264.7 immortalized macrophages with OLZ and evaluated oxidation and inflammation at the gene and protein levels. Li and OLZ concentrations were determined using estimated plasma therapeutic concentrations. Results OLZ triggered a significant increase in macrophage proliferation at 72 h. Higher levels of oxidative markers and proinflammatory cytokines, such as TNF-α, IL-1β, and IL-6, with a concomitant reduction in IL-10, were observed in OLZ-exposed macrophages. Lithium (Li) exposure triggered a short and attenuated inflammatory response demonstrated by elevation of superoxide anion (SA), reactive oxygen species (ROS), IL-1β, and cellular proliferation followed by elevation of anti-inflammatory IL-10 levels. Li treatment of OLZ-supplemented macrophages was able to reverse elevation of oxidative and inflammatory markers and increase IL-10 levels. Conclusions Despite methodological limitations related to in vitro protocols, results suggested that Li may attenuate OLZ-induced oxidative and inflammatory responses that result from metabolic side effects associated with OLZ.
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Affiliation(s)
- Marcelo Soares Fernandes
- Pharmacology Graduate Program, Federal University of Santa Maria, Santa Maria, RS,Brazil
- Federal University of the Southern Frontier, Passo Fundo, RS, Brazil
| | - Fernanda Barbisan
- Gerontology Graduate Program, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | | | | | | | | | - Charles Elias Assmann
- Biochemical Toxicology Graduate Program, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Rogerio Tomasi Riffel
- Federal University of the Southern Frontier, Passo Fundo, RS, Brazil
- Hospital of Clinics of Passo Fundo, Passo Fundo, RS, Brazil
| | | | | | - Ivana Beatrice Mânica da Cruz
- Pharmacology Graduate Program, Federal University of Santa Maria, Santa Maria, RS,Brazil
- Gerontology Graduate Program, Federal University of Santa Maria, Santa Maria, RS, Brazil
- * E-mail:
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Ponti G, Maccaferri M, Mandrioli M, Manfredini M, Micali S, Cotugno M, Bianchi G, Ozben T, Pellacani G, Del Prete C, Tomasi A. Seminal Cell-Free DNA Assessment as a Novel Prostate Cancer Biomarker. Pathol Oncol Res 2018; 24:941-945. [DOI: 10.1007/s12253-018-0416-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 04/26/2018] [Indexed: 02/07/2023]
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13
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Ponti G, Maccaferri M, Manfredini M, Cotugno M, Pellacani G, Conti A, Micali S, Mandrioli M, Tomasi A. Seminal cell-free DNA molecular profile as a novel diagnostic and prognostic prostate cancer biomarkers. Med Hypotheses 2018; 114:69. [DOI: 10.1016/j.mehy.2018.02.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 02/25/2018] [Indexed: 10/17/2022]
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A chemical compound based on methylxanthine-polyphenols lowers nitric oxide levels and increases post-thaw human sperm viability. ZYGOTE 2017; 25:719-730. [PMID: 29179786 DOI: 10.1017/s0967199417000600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We produced a new chemical compound based on methylxanthines and polyphenols (CCMP) present in the chemical matrix of guaraná (Paullinia cupana), a seed extract with antioxidant properties. After supplementation with the standard extract of resveratrol, a well documented antioxidant found in other plant sources, we investigated whether this resveratrol-enriched compound could improve sperm viability and modulate differentially reactive oxygen species (ROS) and nitric oxide (NO) levels in thawed sperm. Sperm samples obtained from healthy young donors were treated with different concentrations of guaraná extract (0.1, 1, 5 or 10 mg/ml) and cells were frozen at -80°C for 24 h. In addition, the potential protective effects of guaraná treatment on sperm treated with pro-oxidant compound (200 µM hydrogen peroxide, H2O2) were assessed. Samples were also exposed to three concentrations of CCMP before being frozen in liquid nitrogen (-196°C) or in an ultrafreezer (-80°C) for 24 h, and both pre-freezing and post-thaw measurements of viability and oxidative stress were performed. Guaraná supplementation at 10 mg/ml significantly increased post-thaw viability and decreased oxidative metabolism of the sperm. Moreover, selected concentrations of CCMP improved viability and oxidative metabolism in sperm samples pre-freezing. Furthermore, CCMP showed cryoprotective activity by increasing viability and decreasing oxidative stress in post-thaw samples. In summary, these findings suggested that CCMP supplementation acts as a cryoprotectant to modulate ROS and NO levels in thawed sperm. CCMP could be used to enhance sperm quality and reproductive success.
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Costa F, Barbisan F, Assmann CE, Seehaber AD, Duarte MHMT, Duarte MMMF, Cruz IBMD. Influence of Val16Ala-SOD2 polymorphism on sperm quality parameters. HUM FERTIL 2017; 21:212-219. [PMID: 28658993 DOI: 10.1080/14647273.2017.1339916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The purpose of this study was to investigate the association between the Val16Ala superoxide dismutase manganese-dependent (SOD2) single nucleotide polymorphism (SNP) and sperm reproductive parameters in a sample of Brazilian men. A potential association between this polymorphism and some oxidative biochemical parameters as well as sperm plasma cell-free DNA (cfDNA) levels were also evaluated. The study was performed using semen samples obtained from male patients that had undergone semen analysis according to the 2010 World Health Organisation (WHO) recommendations and the Val16Ala-SOD2 SNP was genotyped by polymerase chain reaction (PCR). Oxidative parameters as well as cfDNA levels were spectrophotometrically and fluorimetrically determined. Statistical analysis included chi-square test, analysis of variance followed by Bonferroni post hoc test, as well as logistic regression multivariate analysis. Semen samples from 169 men (35.89 ± 7.33 years) were genotyped. The allelic frequencies were V= 0.485 (n = 97), A = 0.515 (n = 103), with statistically similar allelic frequencies to those of samples obtained from a general population: V = 0.509; A= 0.591. In general, AV samples presented lower numbers of sperm-altered parameters than homozygous sperm. Lipoperoxidation was higher in homozygous than heterozygous sperm samples. The results suggest that genetically caused S-HP imbalance could contribute to poor sperm quality and affect male fertility.
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Affiliation(s)
- Felipe Costa
- a Pharmacology Graduate Program , Federal University of Santa Maria (UFSM) , Santa Maria , RS , Brazil
| | - Fernanda Barbisan
- a Pharmacology Graduate Program , Federal University of Santa Maria (UFSM) , Santa Maria , RS , Brazil
| | - Charles Elias Assmann
- b Toxicological Biochemistry Graduate Program , Federal University of Santa Maria (UFSM) , Santa Maria , RS , Brazil
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