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Li J, Dai L, Feng Y, Cao Z, Ding Y, Xu H, Xu A, Du H. Multigenerational effects and mutagenicity of three flame retardants on germ cells in Caenorhabditis elegans. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115815. [PMID: 38091675 DOI: 10.1016/j.ecoenv.2023.115815] [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: 09/10/2023] [Revised: 11/14/2023] [Accepted: 12/09/2023] [Indexed: 01/12/2024]
Abstract
Flame retardants (FRs) have raised public concerns because of their environmental persistence and negative impacts on human health. Recent evidence has revealed that many FRs exhibit reproductive toxicities and transgenerational impacts, whereas the toxic effects of FRs on germ cells remain barely explored. Here we investigated the multigenerational effects of three flame retardants (TBBPA, TCEP and TCPP) on germ cell development in Caenorhabditis elegans, and examined the germ cell mutagenicity of these FRs by using whole genome sequencing. Parental exposure to three FRs markedly increased germ cell apoptosis, and impeded oogenesis in F1-F6 offspring. In addition, the double-increased mutation frequencies observed in progeny genomes uncover the mutagenic actions of FRs on germ cells. Analysis of mutation spectra revealed that these FRs predominantly induced point mutations at A:T base pairs, whereas both small and large indels were almost unaffected. These results revealed the long-term effects of FRs on development and genomic stability of germ cells, which may pose risks to environmental organisms and human reproductive health. Taken together, our findings suggest that germ cell mutagenicity should be carefully examined for the environmental risk assessment of FRs and other emerging pollutants.
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Affiliation(s)
- Jiali Li
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China; Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China
| | - Linglong Dai
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Science Island Branch, Graduate School of USTC, Hefei 230026, Anhui, China
| | - Yu Feng
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Science Island Branch, Graduate School of USTC, Hefei 230026, Anhui, China
| | - Zhenxiao Cao
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Yuting Ding
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, Anhui, China
| | - Hao Xu
- Department of Neurosurgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - An Xu
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China.
| | - Hua Du
- Anhui Province Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China; Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, CAS, Hefei Institutes of Physical Science, CAS, Hefei 230031, Anhui, China.
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Du H, Pan B, Alund AW, Yan J, Chen Y, Robison TW, Chen T. Evaluation of mutagenic susceptibility of different stages in germ cell development of Caenorhabditis elegans using whole genome sequencing. Arch Toxicol 2023; 97:2261-2272. [PMID: 37209179 DOI: 10.1007/s00204-023-03526-z] [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: 03/20/2023] [Accepted: 05/11/2023] [Indexed: 05/22/2023]
Abstract
In contrast to somatic mutations, mutations in germ cells affect every cell of any organism derived from the germ cell and therefore are related to numerous genetic diseases. However, there is no suitable assay to evaluate the mutagenic sensitivities of both male and female germ cells. The main type of Caenorhabditis elegans (C. elegans) is hermaphroditic, where spermatogenesis and oogenesis occur chronologically at specific stages, allowing induction of mutations in either sperm or eggs exclusively. In this study, we used the alkylating agent ethyl methanesulfonate and N-ethyl-N-nitrosourea to induce germline mutations in C. elegans at different developmental stages and analyzed mutation frequency and mutational spectrum from data gathered using next-generation sequencing (NGS) technology. Our results revealed low spontaneous mutation rates of C. elegans, along with distinct mutagenic effects elicited by the two mutagens. Our data show that the parental worms treated during germ cell mitosis, spermatogenesis, and oogenesis resulted in different mutation frequencies in their offspring, and female germ cells could be very susceptible to mutagen exposure during oogenesis. In summary, our study indicates that the use of C. elegans and its specific chronological hermaphroditism would be a promising way to explore the sensitivities of both male and female germ cells to mutagens.
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Affiliation(s)
- Hua Du
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China
| | - Bohu Pan
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Alexander W Alund
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA
- Discovery Sciences | Medicine Design, Pfizer Inc., 280 Shennecossett Rd, Groton, CT, 06340, USA
| | - Jian Yan
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA
| | - Ying Chen
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA
| | - Timothy W Robison
- Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Tao Chen
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, 3900 NCTR Rd, Jefferson, AR, 72079, USA.
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Santos TS, Silva TM, Cardoso JC, de Albuquerque-Júnior RLC, Zielinska A, Souto EB, Severino P, Mendonça MDC. Biosynthesis of Silver Nanoparticles Mediated by Entomopathogenic Fungi: Antimicrobial Resistance, Nanopesticides, and Toxicity. Antibiotics (Basel) 2021; 10:852. [PMID: 34356773 PMCID: PMC8300670 DOI: 10.3390/antibiotics10070852] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/01/2021] [Accepted: 07/12/2021] [Indexed: 12/23/2022] Open
Abstract
Silver nanoparticles are widely used in the biomedical and agri-food fields due to their versatility. The use of biological methods for the synthesis of silver nanoparticles has increased considerably due to their feasibility and high biocompatibility. In general, microorganisms have been widely explored for the production of silver nanoparticles for several applications. The objective of this work was to evaluate the use of entomopathogenic fungi for the biological synthesis of silver nanoparticles, in comparison to the use of other filamentous fungi, and the possibility of using these nanoparticles as antimicrobial agents and for the control of insect pests. In addition, the in vitro methods commonly used to assess the toxicity of these materials are discussed. Several species of filamentous fungi are known to have the ability to form silver nanoparticles, but few studies have been conducted on the potential of entomopathogenic fungi to produce these materials. The investigation of the toxicity of silver nanoparticles is usually carried out in vitro through cytotoxicity/genotoxicity analyses, using well-established methodologies, such as MTT and comet assays, respectively. The use of silver nanoparticles obtained through entomopathogenic fungi against insects is mainly focused on mosquitoes that transmit diseases to humans, with satisfactory results regarding mortality estimates. Entomopathogenic fungi can be employed in the synthesis of silver nanoparticles for potential use in insect control, but there is a need to expand studies on toxicity so to enable their use also in insect control in agriculture.
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Affiliation(s)
- Tárcio S. Santos
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Tarcisio M. Silva
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Juliana C. Cardoso
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Ricardo L. C. de Albuquerque-Júnior
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Aleksandra Zielinska
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;
- Institute of Human Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland
| | - Eliana B. Souto
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;
- CEB—Centre of Biological Engineering, Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
| | - Patrícia Severino
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
| | - Marcelo da Costa Mendonça
- University of Tiradentes (Unit), Av. Murilo Dantas, Aracaju 49010-390, Brazil; (T.S.S.); (T.M.S.); (J.C.C.); (R.L.C.d.A.-J.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), Av. Murilo Dantas, Aracaju 49010-390, Brazil
- Sergipe Agricultural Development Company (Emdagro), Av. Carlos Rodrigues da Cruz s/n, Aracaju 49081-015, Brazil
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