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García‐Vázquez FA, Garrappa G, Luongo C, Hamze JG, Caballero M, Marco‐Jiménez F, Vicente Antón JS, Molina‐Cuberos GJ, Jiménez‐Movilla M. Magnetic-Assisted Control of Eggs and Embryos via Zona Pellucida-Linked Nanoparticles. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306901. [PMID: 38447155 PMCID: PMC11095233 DOI: 10.1002/advs.202306901] [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: 09/20/2023] [Revised: 02/03/2024] [Indexed: 03/08/2024]
Abstract
Eggs and embryo manipulation is an important biotechnological challenge to enable positioning, entrapment, and selection of reproductive cells to advance into a new era of nature-like assisted reproductive technologies. Oviductin (OVGP1) is an abundant protein in the oviduct that binds reversibly to the zona pellucida, an extracellular matrix that surrounds eggs and embryos. Here, the study reports a new method coupling OVGP1 to magnetic nanoparticles (NP) forming a complex (NPOv). NPOv specifically surrounds eggs and embryos in a reversible manner. Eggs/embryos bound to NPOv can be moved or retained when subjected to a magnetic force, and interestingly only mature-competent eggs are attracted. This procedure is compatible with normal development following gametes function, in vitro fertilization, embryo development and resulting in the birth of healthy offspring. The results provide in vitro proof-of-concept that eggs and embryos can be precisely guided in the absence of physical contact by the use of magnets.
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Affiliation(s)
- Francisco Alberto García‐Vázquez
- Departamento de Fisiología, Facultad de Veterinaria, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30100Spain
- Instituto Murciano de Investigación Biosanitaria (IMIB‐Arrixaca)Murcia30120Spain
| | - Gabriela Garrappa
- Departamento de Fisiología, Facultad de Veterinaria, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30100Spain
- Departamento de Biología Celular e Histología, Facultad de Medicina y Enfermería, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30120Spain
- Insitituto Nacional de Tecnología Agropecuaria (INTA)RafaelaSanta Fe2300Argentina
| | - Chiara Luongo
- Departamento de Fisiología, Facultad de Veterinaria, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30100Spain
| | - Julieta Gabriela Hamze
- Instituto Murciano de Investigación Biosanitaria (IMIB‐Arrixaca)Murcia30120Spain
- Departamento de Biología Celular e Histología, Facultad de Medicina y Enfermería, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30120Spain
| | - María Caballero
- Departamento de Fisiología, Facultad de Veterinaria, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30100Spain
- Departamento de Biología Celular e Histología, Facultad de Medicina y Enfermería, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30120Spain
| | - Francisco Marco‐Jiménez
- Instituto de Ciencia y Tecnología AnimalUniversitat Politècnica de ValènciaValencia46022Spain
| | | | - Gregorio J. Molina‐Cuberos
- Departamento de Electromagnetismo y Electrónica, Facultad de QuímicaUniversidad de MurciaMurcia30100Spain
| | - María Jiménez‐Movilla
- Instituto Murciano de Investigación Biosanitaria (IMIB‐Arrixaca)Murcia30120Spain
- Departamento de Biología Celular e Histología, Facultad de Medicina y Enfermería, Campus de Excelencia Mare NostrumUniversidad de MurciaMurcia30120Spain
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Wang Y, Su M, Chen Y, Huang X, Ruan L, Lv Q, Li L. Research progress on the role and mechanism of DNA damage repair in germ cell development. Front Endocrinol (Lausanne) 2023; 14:1234280. [PMID: 37529603 PMCID: PMC10390305 DOI: 10.3389/fendo.2023.1234280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 06/28/2023] [Indexed: 08/03/2023] Open
Abstract
In the complex and dynamic processes of replication, transcription, and translation of DNA molecules, a large number of replication errors or damage can occur which lead to obstacles in the development process of germ cells and result in a decreased reproductive rate. DNA damage repair has attracted widespread attention due to its important role in the maintenance and regulation of germ cells. This study reports on a systematic review of the role and mechanism of DNA damage repair in germline development. First, the causes, detection methods, and repair methods of DNA damage, and the mechanism of DNA damage repair are summarized. Second, a summary of the causes of abnormal DNA damage repair in germ cells is introduced along with common examples, and the relevant effects of germ cell damage. Third, we introduce the application of drugs related to DNA damage repair in the treatment of reproductive diseases and related surgical treatment of abnormal DNA damage, and summarize various applications of DNA damage repair in germ cells. Finally, a summary and discussion is given of the current deficiencies in DNA damage repair during germ cell development and future research development. The purpose of this paper is to provide researchers engaged in relevant fields with a further systematic understanding of the relevant applications of DNA damage repair in germ cells and to gain inspiration from it to provide new research ideas for related fields.
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Affiliation(s)
- Yan Wang
- College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Mengrong Su
- College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Yujie Chen
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Xinyu Huang
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Lian Ruan
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Qizhuang Lv
- College of Basic Medical Sciences, China Three Gorges University, Yichang, Hubei, China
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
| | - Li Li
- College of Biology & Pharmacy, Yulin Normal University, Yulin, China
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Lucas CG, Chen PR, Seixas FK, Prather RS, Collares T. Applications of omics and nanotechnology to improve pig embryo production in vitro. Mol Reprod Dev 2019; 86:1531-1547. [PMID: 31478591 DOI: 10.1002/mrd.23260] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 08/06/2019] [Indexed: 12/17/2022]
Abstract
An appropriate environment to optimize porcine preimplantation embryo production in vitro is required as genetically modified pigs have become indispensable for biomedical research and agriculture. To provide suitable culture conditions, omics technologies have been applied to elucidate which metabolic substrates and pathways are involved during early developmental processes. Metabolomic profiling and transcriptional analysis comparing in vivo- and in vitro-derived embryos have demonstrated the important role of amino acids during preimplantation development. Transcriptional profiling studies have been helpful in assessing epigenetic reprogramming agents to allow for the correction of gene expression during the cloning process. Along with this, nanotechnology, which is a highly promising field, has allowed for the use of engineered nanoplatforms in reproductive biology. A growing number of studies have explored the use of nanoengineered materials for sorting, labeling, and targeting purposes; which demonstrates their potential to become one of the solutions for precise delivery of molecules into gametes and embryos. Considering the contributions of omics and the recent progress in nanoscience, in this review, we focused on their emerging applications for current in vitro pig embryo production systems to optimize the generation of genetically modified animals.
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Affiliation(s)
- Caroline G Lucas
- Division of Animal Science, National Swine Resource and Research Center, University of Missouri, Columbia, Missouri
| | - Paula R Chen
- Division of Animal Science, National Swine Resource and Research Center, University of Missouri, Columbia, Missouri
| | - Fabiana K Seixas
- Cancer Biotechnology Laboratory, Research Group on Cellular and Molecular Oncology, Postgraduate Program in Biotechnology, Technology Development Center, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Randall S Prather
- Division of Animal Science, National Swine Resource and Research Center, University of Missouri, Columbia, Missouri
| | - Tiago Collares
- Cancer Biotechnology Laboratory, Research Group on Cellular and Molecular Oncology, Postgraduate Program in Biotechnology, Technology Development Center, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
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Barkalina N, Jones C, Wood MJA, Coward K. Extracellular vesicle-mediated delivery of molecular compounds into gametes and embryos: learning from nature. Hum Reprod Update 2015; 21:627-39. [PMID: 26071427 DOI: 10.1093/humupd/dmv027] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 05/21/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Currently, even the most sophisticated methods of assisted reproductive technology (ART) allow us to achieve live births in only approximately 30% of patients, indicating that our understanding of the fine mechanisms underlying reproduction is far from ideal. One of the main challenges associated with studies of gamete structure and function is that these cells are remarkably resistant towards the uptake of exogenous substances, including 'molecular research tools' such as drugs, biomolecules and intracellular markers. This phenomenon can affect not only the performance of reproductive biology research techniques, but also the outcomes of the in vitro handling of gametes, which forms the cornerstone of ART. Improvement of intra-gamete delivery in a non-aggressive fashion is vital for the investigation of gamete physiology, and the advancement of infertility treatment. In this review, we outline the current state of nanomaterial-mediated delivery into gametes and embryos in vitro, and discuss the potential of a novel exciting drug delivery technology, based upon the use of targeted 'natural' nanoparticles known as extracellular vesicles (EVs), for reproductive science and ART, given the promising emerging data from other fields. METHODS A comprehensive electronic search of PubMed and Web of Science databases was performed using the following keywords: 'nanoparticles', 'nanomaterials', 'cell-penetrating peptides', 'sperm', 'oocyte', 'egg', 'embryo', 'exosomes', 'microvesicles', 'extracellular vesicles', 'delivery', 'reproduction', to identify the relevant research and review articles, published in English up to January 2015. The reference lists of identified publication were then scanned to extract additional relevant publications. RESULTS Biocompatible engineered nanomaterials with high loading capacity, stability and selective affinity represent a potential versatile tool for the minimally invasive internalization of molecular cargo into gametes and embryos. However, it is becoming increasingly clear that the translation of these experimental tools into clinical applications is likely to be limited by their non-biodegradable nature. To allow the subsequent use of these methodologies for clinical ART, studies should utilize biodegradable delivery platforms, which mimic natural mechanisms of molecular cargo trafficking as closely as possible. Currently, EVs represent the most physiological intracellular delivery tools for reproductive science and medicine. These natural mediators of cell communication combine the benefits of engineered nanomaterials, such as the potential for in vitro production, targeting and loading, with the essential feature of biodegradability. CONCLUSION We anticipate that future investigations into the possibility of applying EVs for the intentional intracellular delivery of molecular compounds into gametes and embryos will open new horizons for reproductive science and clinical ART, ultimately leading to improvements in patient care.
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Affiliation(s)
- Natalia Barkalina
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
| | - Celine Jones
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
| | - Matthew J A Wood
- Department of Physiology, Anatomy and Genetics, University of Oxford, Le Gros Clark Building, South Parks Road, Oxford OX1 3QX, UK
| | - Kevin Coward
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
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Barkalina N, Jones C, Coward K. Nanomedicine and mammalian sperm: Lessons from the porcine model. Theriogenology 2015; 85:74-82. [PMID: 26116055 DOI: 10.1016/j.theriogenology.2015.05.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/05/2015] [Accepted: 05/20/2015] [Indexed: 10/23/2022]
Abstract
Biomedical nanotechnology allows us to engineer versatile nanosized platforms that are comparable in size to biological molecules and intracellular organelles. These platforms can be loaded with large amounts of biological cargo, administered systemically and act at a distance, target specific cell populations, undergo intracellular internalization via endogenous uptake mechanisms, and act as contrast agents or release cargo for therapeutic purposes. Over recent years, nanomaterials have been increasingly viewed as favorable candidates for intragamete delivery. Particularly in the case of sperm, nanomaterial-based approaches have been shown to improve the efficacy of existing techniques such as sperm-mediated gene transfer, loading sperm with exogenous proteins, and tagging sperm for subsequent sex- or function-based sorting. In this short review, we provide an outline of the current state of nanotechnology for biomedical applications in reproductive biology and present highlights from a series of our studies evaluating the use of specialized silica nanoparticles in boar sperm as a potential delivery vehicle into mammalian gametes. The encouraging data obtained already from the porcine model in our laboratory have formed the basis for ethical approval of similar experiments in human sperm, thereby bringing us a step closer toward the potential use of this novel technology in the clinical environment.
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Affiliation(s)
- Natalia Barkalina
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Oxford, UK.
| | - Celine Jones
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Oxford, UK
| | - Kevin Coward
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Oxford, UK
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Barkalina N, Jones C, Townley H, Coward K. Functionalization of mesoporous silica nanoparticles with a cell-penetrating peptide to target mammalian sperm in vitro. Nanomedicine (Lond) 2015; 10:1539-53. [DOI: 10.2217/nnm.14.235] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Aim: This study aimed to investigate the effects of actively targeting mesoporous silica nanoparticles (MSNPs) toward mammalian sperm with a cell-penetrating peptide (C105Y), with subsequent analysis of binding rates and nano-safety profiles. Materials & methods: Boar sperm were exposed in vitro to C105Y-functionalized MSNPs or free C105Y, in a series of increasing doses for up to 2 h, followed by the evaluation of sperm motility, kinematic parameters, acrosome morphology, MSNP-sperm binding and cell fluorescence levels. Results: C105Y-functionalized MSNPs preserved their biocompatibility with sperm, and exhibited an approximately fourfold increase in affinity toward gametes, compared with unmodified MSNPs, during the early stages of incubation. Conclusion: Our findings support the application of MSNPs and active targeting to sperm as valuable tools for reproductive biology.
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Affiliation(s)
- Natalia Barkalina
- Nuffield Department of Obstetrics & Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
| | - Celine Jones
- Nuffield Department of Obstetrics & Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
| | - Helen Townley
- Nuffield Department of Obstetrics & Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
- Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, UK
| | - Kevin Coward
- Nuffield Department of Obstetrics & Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
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Barkalina N, Jones C, Coward K. Mesoporous silica nanoparticles: a potential targeted delivery vector for reproductive biology? Nanomedicine (Lond) 2015; 9:557-60. [PMID: 24827836 DOI: 10.2217/nnm.14.18] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Natalia Barkalina
- Nuffield Department of Obstetrics & Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
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Nanotechnology in reproductive medicine: Emerging applications of nanomaterials. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:921-38. [DOI: 10.1016/j.nano.2014.01.001] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 12/09/2013] [Accepted: 01/09/2014] [Indexed: 12/21/2022]
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Taylor U, Garrels W, Barchanski A, Peterson S, Sajti L, Lucas-Hahn A, Gamrad L, Baulain U, Klein S, Kues WA, Barcikowski S, Rath D. Injection of ligand-free gold and silver nanoparticles into murine embryos does not impact pre-implantation development. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:677-88. [PMID: 24991505 PMCID: PMC4077524 DOI: 10.3762/bjnano.5.80] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 04/04/2014] [Indexed: 05/27/2023]
Abstract
Intended exposure to gold and silver nanoparticles has increased exponentially over the last decade and will continue to rise due to their use in biomedical applications. In particular, reprotoxicological aspects of these particles still need to be addressed so that the potential impacts of this development on human health can be reliably estimated. Therefore, in this study the toxicity of gold and silver nanoparticles on mammalian preimplantation development was assessed by injecting nanoparticles into one blastomere of murine 2 cell-embryos, while the sister blastomere served as an internal control. After treatment, embryos were cultured and embryo development up to the blastocyst stage was assessed. Development rates did not differ between microinjected and control groups (gold nanoparticles: 67.3%, silver nanoparticles: 61.5%, sham: 66.2%, handling control: 79.4%). Real-time PCR analysis of six developmentally important genes (BAX, BCL2L2, TP53, OCT4, NANOG, DNMT3A) did not reveal an influence on gene expression in blastocysts. Contrary to silver nanoparticles, exposure to comparable Ag(+)-ion concentrations resulted in an immediate arrest of embryo development. In conclusion, the results do not indicate any detrimental effect of colloidal gold or silver nanoparticles on the development of murine embryos.
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Affiliation(s)
- Ulrike Taylor
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Hoeltystrasse 10, 31535 Neustadt/Mariensee, Germany
| | - Wiebke Garrels
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Hoeltystrasse 10, 31535 Neustadt/Mariensee, Germany
| | - Annette Barchanski
- Nanotechnology Department, Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany
| | - Svea Peterson
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Strasse 4, 18119 Rostock, Germany
| | - Laszlo Sajti
- Nanotechnology Department, Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany
| | - Andrea Lucas-Hahn
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Hoeltystrasse 10, 31535 Neustadt/Mariensee, Germany
| | - Lisa Gamrad
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Ulrich Baulain
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Hoeltystrasse 10, 31535 Neustadt/Mariensee, Germany
| | - Sabine Klein
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Hoeltystrasse 10, 31535 Neustadt/Mariensee, Germany
| | - Wilfried A Kues
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Hoeltystrasse 10, 31535 Neustadt/Mariensee, Germany
| | - Stephan Barcikowski
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstrasse 7, 45141 Essen, Germany
| | - Detlef Rath
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, Hoeltystrasse 10, 31535 Neustadt/Mariensee, Germany
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Barkalina N, Jones C, Kashir J, Coote S, Huang X, Morrison R, Townley H, Coward K. Effects of mesoporous silica nanoparticles upon the function of mammalian sperm in vitro. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:859-70. [DOI: 10.1016/j.nano.2013.10.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 10/07/2013] [Accepted: 10/27/2013] [Indexed: 10/26/2022]
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Xu G, Lin S, Law WC, Roy I, Lin X, Mei S, Ma H, Chen S, Niu H, Wang X. The Invasion and Reproductive Toxicity of QDs-Transferrin Bioconjugates on Preantral Follicle in vitro. Am J Cancer Res 2012; 2:734-45. [PMID: 22916073 PMCID: PMC3425092 DOI: 10.7150/thno.4290] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Accepted: 04/30/2012] [Indexed: 11/06/2022] Open
Abstract
The toxicity of QD has been extensively studied over the past decade. However, the potential toxicity of QDs impedes its use for clinical research. In this work, we established a preantral follicle in vitro culture system to investigate the effects of QD-Transferrin (QDs-Tf) bioconjugates on follicle development and oocyte maturation. The preantral follicles were cultured and exposed to CdTe/ZnTe QDs-Tf bioconjugates with various concentrations and the reproductive toxicity was assessed at different time points post-treatment. The invasion of QDs-Tf for oocytes was verified by laser scanning confocal microscope. Steroid production was evaluated by immunoassay. C-band Giemsa staining was performed to observe the chromosome abnormality of oocytes. The results showed that the QDs-Tf bioconjugates could permeate into granulosa cells and theca cells, but not into oocyte. There are no obvious changes of oocyte diameter, the mucification of cumulus-oocyte-complexes and the occurrence of aneulpoidy as compared with the control group. However, delay in the antrum formation and decrease in the ratio of oocytes with first polar body were observed in QDs-Tf-treated groups. The matured oocytes with first polar body decreased significantly by ~16% (from 79.6±10 % to 63±2.9 %) when the concentration of QDs-Tf bioconjugates exceeded 2.89 nmol·L-1 (P < 0.05). Our results implied that the CdTe/ZnTe QDs-Tf bioconjugates were reproductive toxic for follicle development, and thus also revealed that this in vitro culture system of preantral follicle is a highly sensitive tool for study on the reproductive toxicity of nanoparticles.
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Pluskota A, Horzowski E, Bossinger O, von Mikecz A. In Caenorhabditis elegans nanoparticle-bio-interactions become transparent: silica-nanoparticles induce reproductive senescence. PLoS One 2009; 4:e6622. [PMID: 19672302 PMCID: PMC2719910 DOI: 10.1371/journal.pone.0006622] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Accepted: 07/06/2009] [Indexed: 11/19/2022] Open
Abstract
While expectations and applications of nanotechnologies grow exponentially, little is known about interactions of engineered nanoparticles with multicellular organisms. Here we propose the transparent roundworm Caenorhabditis elegans as a simple but anatomically and biologically well defined animal model that allows for whole organism analyses of nanoparticle-bio-interactions. Microscopic techniques showed that fluorescently labelled nanoparticles are efficiently taken up by the worms during feeding, and translocate to primary organs such as epithelial cells of the intestine, as well as secondary organs belonging to the reproductive tract. The life span of nanoparticle-fed Caenorhabditis elegans remained unchanged, whereas a reduction of progeny production was observed in silica-nanoparticle exposed worms versus untreated controls. This reduction was accompanied by a significant increase of the 'bag of worms' phenotype that is characterized by failed egg-laying and usually occurs in aged wild type worms. Experimental exclusion of developmental defects suggests that silica-nanoparticles induce an age-related degeneration of reproductive organs, and thus set a research platform for both, detailed elucidation of molecular mechanisms and high throughput screening of different nanomaterials by analyses of progeny production.
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Affiliation(s)
- Adam Pluskota
- Institut für umweltmedizinische Forschung (IUF) at Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Eva Horzowski
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Aachen, Germany
| | - Olaf Bossinger
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Aachen, Germany
| | - Anna von Mikecz
- Institut für umweltmedizinische Forschung (IUF) at Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
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