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Abady MM, Jeong JS, Kwon HJ, Assiri AM, Cho J, Saadeldin IM. The reprotoxic adverse side effects of neurogenic and neuroprotective drugs: current use of human organoid modeling as a potential alternative to preclinical models. Front Pharmacol 2024; 15:1412188. [PMID: 38948466 PMCID: PMC11211546 DOI: 10.3389/fphar.2024.1412188] [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: 04/04/2024] [Accepted: 05/29/2024] [Indexed: 07/02/2024] Open
Abstract
The management of neurological disorders heavily relies on neurotherapeutic drugs, but notable concerns exist regarding their possible negative effects on reproductive health. Traditional preclinical models often fail to accurately predict reprotoxicity, highlighting the need for more physiologically relevant systems. Organoid models represent a promising approach for concurrently studying neurotoxicity and reprotoxicity, providing insights into the complex interplay between neurotherapeutic drugs and reproductive systems. Herein, we have examined the molecular mechanisms underlying neurotherapeutic drug-induced reprotoxicity and discussed experimental findings from case studies. Additionally, we explore the utility of organoid models in elucidating the reproductive complications of neurodrug exposure. Have discussed the principles of organoid models, highlighting their ability to recapitulate neurodevelopmental processes and simulate drug-induced toxicity in a controlled environment. Challenges and future perspectives in the field have been addressed with a focus on advancing organoid technologies to improve reprotoxicity assessment and enhance drug safety screening. This review underscores the importance of organoid models in unraveling the complex relationship between neurotherapeutic drugs and reproductive health.
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Affiliation(s)
- Mariam M. Abady
- Organic Metrology Group, Division of Chemical and Material Metrology, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
- Department of Bio-Analytical Science, University of Science and Technology, Daejeon, Republic of Korea
- Department of Nutrition and Food Science, National Research Centre, Cairo, Egypt
| | - Ji-Seon Jeong
- Organic Metrology Group, Division of Chemical and Material Metrology, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
- Department of Bio-Analytical Science, University of Science and Technology, Daejeon, Republic of Korea
| | - Ha-Jeong Kwon
- Organic Metrology Group, Division of Chemical and Material Metrology, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
| | - Abdullah M. Assiri
- Deperament of Comparative Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Jongki Cho
- College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Islam M. Saadeldin
- Deperament of Comparative Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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2
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Farini D, De Felici M. The Beginning of Meiosis in Mammalian Female Germ Cells: A Never-Ending Story of Intrinsic and Extrinsic Factors. Int J Mol Sci 2022; 23:ijms232012571. [PMID: 36293427 PMCID: PMC9604137 DOI: 10.3390/ijms232012571] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/06/2022] [Accepted: 10/18/2022] [Indexed: 11/16/2022] Open
Abstract
Meiosis is the unique division of germ cells resulting in the recombination of the maternal and paternal genomes and the production of haploid gametes. In mammals, it begins during the fetal life in females and during puberty in males. In both cases, entering meiosis requires a timely switch from the mitotic to the meiotic cell cycle and the transition from a potential pluripotent status to meiotic differentiation. Revealing the molecular mechanisms underlying these interrelated processes represents the essence in understanding the beginning of meiosis. Meiosis facilitates diversity across individuals and acts as a fundamental driver of evolution. Major differences between sexes and among species complicate the understanding of how meiosis begins. Basic meiotic research is further hindered by a current lack of meiotic cell lines. This has been recently partly overcome with the use of primordial-germ-cell-like cells (PGCLCs) generated from pluripotent stem cells. Much of what we know about this process depends on data from model organisms, namely, the mouse; in mice, the process, however, appears to differ in many aspects from that in humans. Identifying the mechanisms and molecules controlling germ cells to enter meiosis has represented and still represents a major challenge for reproductive medicine. In fact, the proper execution of meiosis is essential for fertility, for maintaining the integrity of the genome, and for ensuring the normal development of the offspring. The main clinical consequences of meiotic defects are infertility and, probably, increased susceptibility to some types of germ-cell tumors. In the present work, we report and discuss data mainly concerning the beginning of meiosis in mammalian female germ cells, referring to such process in males only when pertinent. After a brief account of this process in mice and humans and an historical chronicle of the major hypotheses and progress in this topic, the most recent results are reviewed and discussed.
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Sahota JS, Sharma B, Guleria K, Sambyal V. Candidate genes for infertility: an in-silico study based on cytogenetic analysis. BMC Med Genomics 2022; 15:170. [PMID: 35918717 PMCID: PMC9347124 DOI: 10.1186/s12920-022-01320-x] [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: 05/11/2022] [Accepted: 07/22/2022] [Indexed: 11/26/2022] Open
Abstract
Background The cause of infertility remains unclear in a significant proportion of reproductive-age couples who fail to conceive naturally. Chromosomal aberrations have been identified as one of the main genetic causes of male and female infertility. Structural chromosomal aberrations may disrupt the functioning of various genes, some of which may be important for fertility. The present study aims to identify candidate genes and putative functional interaction networks involved in male and female infertility using cytogenetic data from cultured peripheral blood lymphocytes of infertile patients. Methods Karyotypic analyses was done in 201 infertile patients (100 males and 101 females) and 201 age and gender matched healthy controls (100 males and 101 females) after 72 h peripheral lymphocyte culturing and GTG banding, followed by bioinformatic analysis using Cytoscape v3.8.2 and Metascape. Results Several chromosomal regions with a significantly higher frequency of structural aberrations were identified in the infertile males (5q2, 10q2, and 17q2) and females (6q2, 16q2, and Xq2). Segregation of the patients based on type of infertility (primary v/s secondary infertility) led to the identification of chromosomal regions with a significantly higher frequency of structural aberrations exclusively within the infertile males (5q2, 17q2) and females (16q2) with primary infertility. Cytoscape identified two networks specific to these regions: a male specific network with 99 genes and a female specific network with 109 genes. The top enriched GO terms within the male and female infertility networks were “skeletal system morphogenesis” and “mRNA transport” respectively. PSME3, PSMD3, and CDC27 were the top 3 hub genes identified within the male infertility network. Similarly, UPF3B, IRF8, and PSMB1 were the top 3 hub genes identified with the female infertility network. Among the hub genes identified in the male- and female-specific networks, PSMB1, PSMD3, and PSME3 are functional components of the proteasome complex. These hub genes have a limited number of reports related to their respective roles in maintenance of fertility in mice model and humans and require validation in further studies. Conclusion The candidate genes predicted in the present study can serve as targets for future research on infertility. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-022-01320-x.
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Affiliation(s)
- Jatinder Singh Sahota
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India
| | - Bhavna Sharma
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India
| | - Kamlesh Guleria
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India
| | - Vasudha Sambyal
- Department of Human Genetics, Cytogenetics Laboratory, Guru Nanak Dev University (GNDU), Amritsar, Punjab, 143005, India.
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Aharon D, Marlow FL. Sexual determination in zebrafish. Cell Mol Life Sci 2021; 79:8. [PMID: 34936027 PMCID: PMC11072476 DOI: 10.1007/s00018-021-04066-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 11/12/2021] [Accepted: 11/29/2021] [Indexed: 01/10/2023]
Abstract
Zebrafish have emerged as a major model organism to study vertebrate reproduction due to their high fecundity and external development of eggs and embryos. The mechanisms through which zebrafish determine their sex have come under extensive investigation, as they lack a definite sex-determining chromosome and appear to have a highly complex method of sex determination. Single-gene mutagenesis has been employed to isolate the function of genes that determine zebrafish sex and regulate sex-specific differentiation, and to explore the interactions of genes that promote female or male sexual fate. In this review, we focus on recent advances in understanding of the mechanisms, including genetic and environmental factors, governing zebrafish sex development with comparisons to gene functions in other species to highlight conserved and potentially species-specific mechanisms for specifying and maintaining sexual fate.
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Affiliation(s)
- Devora Aharon
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy, Place Box 1020, New York, NY, 10029-6574, USA
| | - Florence L Marlow
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy, Place Box 1020, New York, NY, 10029-6574, USA.
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Sołek P, Mytych J, Tabęcka-Łonczyńska A, Koziorowski M. Molecular Consequences of Depression Treatment: A Potential In Vitro Mechanism for Antidepressants-Induced Reprotoxic Side Effects. Int J Mol Sci 2021; 22:11855. [PMID: 34769286 PMCID: PMC8584852 DOI: 10.3390/ijms222111855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/24/2021] [Accepted: 10/30/2021] [Indexed: 11/16/2022] Open
Abstract
The incidence of depression among humans is growing worldwide, and so is the use of antidepressants. However, our fundamental understanding regarding the mechanisms by which these drugs function and their off-target effects against human sexuality remains poorly defined. The present study aimed to determine their differential toxicity on mouse spermatogenic cells and provide mechanistic data of cell-specific response to antidepressant and neuroleptic drug treatment. To directly test reprotoxicity, the spermatogenic cells (GC-1 spg and GC-2 spd cells) were incubated for 48 and 96 h with amitriptyline (hydrochloride) (AMI), escitalopram (ESC), fluoxetine (hydrochloride) (FLU), imipramine (hydrochloride) (IMI), mirtazapine (MIR), olanzapine (OLZ), reboxetine (mesylate) (REB), and venlafaxine (hydrochloride) (VEN), and several cellular and biochemical features were assessed. Obtained results reveal that all investigated substances showed considerable reprotoxic potency leading to micronuclei formation, which, in turn, resulted in upregulation of telomeric binding factor (TRF1/TRF2) protein expression. The TRF-based response was strictly dependent on p53/p21 signaling and was followed by irreversible G2/M cell cycle arrest and finally initiation of apoptotic cell death. In conclusion, our findings suggest that antidepressants promote a telomere-focused DNA damage response in germ cell lines, which broadens the established view of antidepressants' and neuroleptic drugs' toxicity and points to the need for further research in this topic with the use of in vivo models and human samples.
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Affiliation(s)
- Przemysław Sołek
- Department of Biotechnology, Institute of Biology and Biotechnology, University of Rzeszow, Werynia 2, 36-100 Kolbuszowa, Poland; (A.T.-Ł.); (M.K.)
| | - Jennifer Mytych
- Department of Biotechnology, Institute of Biology and Biotechnology, University of Rzeszow, Werynia 2, 36-100 Kolbuszowa, Poland; (A.T.-Ł.); (M.K.)
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Zhao ZH, Schatten H, Sun QY. High-throughput sequencing reveals landscapes of female germ cell development. Mol Hum Reprod 2021; 26:738-747. [PMID: 32866227 DOI: 10.1093/molehr/gaaa059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/09/2020] [Indexed: 12/11/2022] Open
Abstract
Female germ cell development is a highly complex process that includes meiosis initiation, oocyte growth recruitment, oocyte meiosis retardation and resumption and final meiotic maturation. A series of coordinated molecular signaling factors ensure successful oogenesis. The recent rapid development of high-throughput sequencing technologies allows for the dynamic omics in female germ cells, which is essential for further understanding the regulatory mechanisms of molecular events comprehensively. In this review, we summarize the current literature of multi-omics sequenced by epigenome-, transcriptome- and proteome-associated technologies, which provide valuable information for understanding the regulation of key events during female germ cell development.
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Affiliation(s)
- Zheng-Hui Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, USA
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, China
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7
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Zhao ZH, Meng TG, Zhang HY, Hou Y, Schatten H, Wang ZB, Sun QY. Single-cell RNA sequencing reveals species-specific time spans of cell cycle transitions in early oogenesis. Hum Mol Genet 2021; 30:525-535. [PMID: 33575778 DOI: 10.1093/hmg/ddab048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 01/16/2021] [Accepted: 02/04/2021] [Indexed: 11/14/2022] Open
Abstract
Oogenesis is a highly regulated process and its basic cellular events are evolutionarily conserved. However, the time spans of oogenesis differ substantially among species. To explore these interspecies differences in oogenesis, we performed single-cell RNA-sequencing on mouse and monkey female germ cells and downloaded the single-cell RNA-sequencing data of human female germ cells. The cell cycle analyses indicate that the period and extent of cell cycle transitions are significantly different between the species. Moreover, hierarchical clustering of critical cell cycle genes and the interacting network of cell cycle regulators also exhibit distinguished patterns across species. We propose that differences in the regulation of cell cycle transitions may underlie female germ cell developmental allochrony between species. A better understanding of the cell cycle transition machinery will provide new insights into the interspecies differences in female germ cell developmental time spans.
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Affiliation(s)
- Zheng-Hui Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Tie-Gang Meng
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China
| | - Hong-Yong Zhang
- Department of Reproductive Medicine, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, 518036, China
| | - Yi Hou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA
| | - Zhen-Bo Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China
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8
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Evolving Role of RING1 and YY1 Binding Protein in the Regulation of Germ-Cell-Specific Transcription. Genes (Basel) 2019; 10:genes10110941. [PMID: 31752312 PMCID: PMC6895862 DOI: 10.3390/genes10110941] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/07/2019] [Accepted: 11/14/2019] [Indexed: 12/11/2022] Open
Abstract
Separation of germline cells from somatic lineages is one of the earliest decisions of embryogenesis. Genes expressed in germline cells include apoptotic and meiotic factors, which are not transcribed in the soma normally, but a number of testis-specific genes are active in numerous cancer types. During germ cell development, germ-cell-specific genes can be regulated by specific transcription factors, retinoic acid signaling and multimeric protein complexes. Non-canonical polycomb repressive complexes, like ncPRC1.6, play a critical role in the regulation of the activity of germ-cell-specific genes. RING1 and YY1 binding protein (RYBP) is one of the core members of the ncPRC1.6. Surprisingly, the role of Rybp in germ cell differentiation has not been defined yet. This review is focusing on the possible role of Rybp in this process. By analyzing whole-genome transcriptome alterations of the Rybp-/- embryonic stem (ES) cells and correlating this data with experimentally identified binding sites of ncPRC1.6 subunits and retinoic acid receptors in ES cells, we propose a model how germ-cell-specific transcription can be governed by an RYBP centered regulatory network, underlining the possible role of RYBP in germ cell differentiation and tumorigenesis.
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9
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Abstract
Germ cells are the stem cells of the species. Thus, it is critical that we have a good understanding of how they are specified, how the somatic cells instruct and support them, how they commit to one or other sex, and how they ultimately develop into functional gametes. Here, we focus on specifics of how sexual fate is determined during fetal life. Because the majority of relevant experimental work has been done using the mouse model, we focus on that species. We review evidence regarding the identity of instructive signals from the somatic cells, and the molecular responses that occur in germ cells in response to those extrinsic signals. In this way we aim to clarify progress to date regarding the mechanisms underlying the mitotic to meiosis switch in germ cells of the fetal ovary, and those involved in adopting and securing male fate in germ cells of the fetal testis.
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Affiliation(s)
- Cassy Spiller
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Josephine Bowles
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia; Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia.
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10
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Accurate annotation of accessible chromatin in mouse and human primordial germ cells. Cell Res 2018; 28:1077-1089. [PMID: 30305709 DOI: 10.1038/s41422-018-0096-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/24/2018] [Accepted: 09/02/2018] [Indexed: 12/15/2022] Open
Abstract
Extensive and accurate chromatin remodeling is essential during primordial germ cell (PGC) development for the perpetuation of genetic information across generations. Here, we report that distal cis-regulatory elements (CREs) marked by DNase I-hypersensitive sites (DHSs) show temporally restricted activities during mouse and human PGC development. Using DHS maps as proxy, we accurately locate the genome-wide binding sites of pluripotency transcription factors in mouse PGCs. Unexpectedly, we found that mouse female meiotic recombination hotspots can be captured by DHSs, and for the first time, we identified 12,211 recombination hotspots in mouse female PGCs. In contrast to that of meiotic female PGCs, the chromatin of mitotic-arrested male PGCs is permissive through nuclear transcription factor Y (NFY) binding in the distal regulatory regions. Furthermore, we examined the evolutionary pressure on PGC CREs, and comparative genomic analysis revealed that mouse and human PGC CREs are evolutionarily conserved and show strong conservation across the vertebrate tree outside the mammals. Therefore, our results reveal unique, temporally accessible chromatin configurations during mouse and human PGC development.
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11
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Windley SP, Wilhelm D. Signaling Pathways Involved in Mammalian Sex Determination and Gonad Development. Sex Dev 2016; 9:297-315. [PMID: 26905731 DOI: 10.1159/000444065] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2015] [Indexed: 11/19/2022] Open
Abstract
The development of any organ system requires a complex interplay of cellular signals to initiate the differentiation and development of the heterogeneous cell and tissue types required to carry out the organs' functions. In this way, an extracellular stimulus is transmitted to an intracellular target through an array of interacting protein intermediaries, ultimately enabling the target cell to elicit a response. Surprisingly, only a small number of signaling pathways are implicated throughout embryogenesis and are used over and over again. Gonadogenesis is a unique process in that 2 morphologically distinct organs, the testes and ovaries, arise from a common precursor, the bipotential genital ridge. Accordingly, most of the signaling pathways observed throughout embryogenesis also have been shown to be important for mammalian sex determination and gonad development. Here, we review the mechanisms of signal transduction within these pathways and the importance of these pathways throughout mammalian gonad development, mainly concentrating on data obtained in mouse but including other species where appropriate.
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Affiliation(s)
- Simon P Windley
- Department of Anatomy and Neuroscience, The University of Melbourne, Parkville, Vic., Australia
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12
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Rossitto M, Philibert P, Poulat F, Boizet-Bonhoure B. Molecular events and signalling pathways of male germ cell differentiation in mouse. Semin Cell Dev Biol 2015; 45:84-93. [PMID: 26454096 DOI: 10.1016/j.semcdb.2015.09.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 09/22/2015] [Indexed: 12/15/2022]
Abstract
Germ cells, the precursors of gametes, represent a unique cell lineage that is able to differentiate into spermatozoa or oocytes depending on the chromosomal sex of the organism. In the mammalian embryonic gonad, commitment to oogenesis involves pre-meiotic DNA replication and entry into the first meiotic division; whereas, commitment to spermatogenesis involves inhibition of meiotic initiation, suppression of pluripotency, mitotic arrest and expression of specific markers that will control the development of the male germ cells. The crucial decision made by the germ line to commit to either a male or a female fate has been partially explained by genetic and ex vivo studies in mice which have implicated a complex network of regulatory genes, numerous factors and pathways. Besides the reproductive failure that may follow a deregulation of this complex network, the germ cells may, in view of their proliferative and pluripotent nature, act as precursors of potential malignant transformation and as putative targets for exogenous environmental compounds. Our review summarizes and discusses recent developments that have improved our understanding on how germ cell precursors are committed to a male or a female cell fate in the mouse gonad.
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Affiliation(s)
- Moïra Rossitto
- Genetic and Development Department, Institute of Human Genetics, CNRS UPR1142, Montpellier, France.
| | - Pascal Philibert
- Genetic and Development Department, Institute of Human Genetics, CNRS UPR1142, Montpellier, France.
| | - Francis Poulat
- Genetic and Development Department, Institute of Human Genetics, CNRS UPR1142, Montpellier, France.
| | - Brigitte Boizet-Bonhoure
- Genetic and Development Department, Institute of Human Genetics, CNRS UPR1142, Montpellier, France.
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13
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Moniot B, Ujjan S, Champagne J, Hirai H, Aritake K, Nagata K, Dubois E, Nidelet S, Nakamura M, Urade Y, Poulat F, Boizet-Bonhoure B. Prostaglandin D2 acts through the Dp2 receptor to influence male germ cell differentiation in the foetal mouse testis. Development 2014; 141:3561-71. [DOI: 10.1242/dev.103408] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Through intercellular signalling, the somatic compartment of the foetal testis is able to program primordial germ cells to undergo spermatogenesis. Fibroblast growth factor 9 and several members of the transforming growth factor β superfamily are involved in this process in the foetal testis, counteracting the induction of meiosis by retinoic acid and activating germinal mitotic arrest. Here, using in vitro and in vivo approaches, we show that prostaglandin D2 (PGD2), which is produced through both L-Pgds and H-Pgds enzymatic activities in the somatic and germ cell compartments of the foetal testis, plays a role in mitotic arrest in male germ cells by activating the expression and nuclear localization of the CDK inhibitor p21Cip1 and by repressing pluripotency markers. We show that PGD2 acts through its Dp2 receptor, at least in part through direct effects in germ cells, and contributes to the proper differentiation of male germ cells through the upregulation of the master gene Nanos2. Our data identify PGD2 signalling as an early pathway that acts in both paracrine and autocrine manners, and contributes to the differentiation of germ cells in the foetal testis.
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Affiliation(s)
- Brigitte Moniot
- Genetic and Development department, Institute of Human Genetics, CNRS UPR1142, Montpellier 34094, Cedex 05, France
| | - Safdar Ujjan
- Genetic and Development department, Institute of Human Genetics, CNRS UPR1142, Montpellier 34094, Cedex 05, France
| | - Julien Champagne
- Genetic and Development department, Institute of Human Genetics, CNRS UPR1142, Montpellier 34094, Cedex 05, France
| | - Hiroyuki Hirai
- Department of Advanced Technology and Development, BML, Matoba, Kawagoe, Saitama 350-1101, Japan
| | - Kosuke Aritake
- Department of Molecular Behavioral Biology, Osaka Bioscience Institute, Osaka 565-0874, Japan
| | - Kinya Nagata
- Department of Advanced Technology and Development, BML, Matoba, Kawagoe, Saitama 350-1101, Japan
| | - Emeric Dubois
- Plateforme MGX, Functional Genomic Institute, CNRS UMR 5203 – INSERM U 661, Montpellier 34094, Cedex 05, France
| | - Sabine Nidelet
- Plateforme MGX, Functional Genomic Institute, CNRS UMR 5203 – INSERM U 661, Montpellier 34094, Cedex 05, France
| | - Masataka Nakamura
- Human Gene Sciences Center, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Yoshihiro Urade
- Department of Molecular Behavioral Biology, Osaka Bioscience Institute, Osaka 565-0874, Japan
| | - Francis Poulat
- Genetic and Development department, Institute of Human Genetics, CNRS UPR1142, Montpellier 34094, Cedex 05, France
| | - Brigitte Boizet-Bonhoure
- Genetic and Development department, Institute of Human Genetics, CNRS UPR1142, Montpellier 34094, Cedex 05, France
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Cong Y, Ma J, Sun R, Wang J, Xue B, Wang J, Xie B, Wang J, Hu K, Liu Z. Derivation of putative porcine embryonic germ cells and analysis of their multi-lineage differentiation potential. J Genet Genomics 2013; 40:453-64. [PMID: 24053947 DOI: 10.1016/j.jgg.2013.06.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 06/12/2013] [Accepted: 06/13/2013] [Indexed: 01/22/2023]
Abstract
Embryonic germ (EG) cells are cultured pluripotent stem cells derived from the primordial germ cells (PGCs) that migrate from the dorsal mesentery of the hindgut to the developing genital ridge. In this study, the morphology of the porcine genital ridge was assessed in embryos harvested on days 22-30 of pregnancy. PGCs from embryos at these stages were cultured to obtain porcine EG cell lines, and EG-like cells were derived from PGCs from embryos harvested on days 24-28 of pregnancy. The EG-like cells expressed Oct4, Sox2, Nanog, SSEA-3, SSEA-4 and alkaline phosphatase (AP). These cells were able to form embryoid bodies (EBs) in suspension culture and differentiate into cells representative of the three germ layers as verified by a-fetoprotein (AFP), α-smooth muscle actin (α-SMA), and Nestin expression. Spontaneous differentiation from the porcine EG-like cells of delayed passage in vitro showed that they could differentiate into epithelial-like cells, mesenchymal-like cells and neuron-like cells. In vitro directed differentiation generated osteocytes, adipocytes and a variety of neural lineage cells, as demonstrated by alizarin red staining, oil red O staining, and immunofluorescence for neuronal class Ⅲ β-tubulin (Tuj1), glial fibrillary protein (GFAP) and galactosylceramidase (GALC), respectively. These results indicate that porcine EG-like cells have the potential for multi-lineage differentiation and are useful for basic porcine stem cell research.
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Affiliation(s)
- Yimei Cong
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
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Ullah M, Stich S, Notter M, Eucker J, Sittinger M, Ringe J. Transdifferentiation of mesenchymal stem cells-derived adipogenic-differentiated cells into osteogenic- or chondrogenic-differentiated cells proceeds via dedifferentiation and have a correlation with cell cycle arresting and driving genes. Differentiation 2013; 85:78-90. [PMID: 23644554 DOI: 10.1016/j.diff.2013.02.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 12/18/2012] [Accepted: 02/05/2013] [Indexed: 01/25/2023]
Abstract
It is generally accepted that after differentiation bone marrow mesenchymal stem cells (MSC) become lineage restricted and unipotent in an irreversible manner. However, current results imply that even terminally differentiated cells transdifferentiate across lineage boundaries and therefore act as a progenitor cells for other lineages. This leads to the questions that whether transdifferentiation occurs via direct cell-to-cell conversion or dedifferentiation to a progenitor cells and subsequent differentiation, and whether MSC potency decreases or increases during differentiation. To address these questions, MSC were differentiated into adipogenic lineage cells, followed by dedifferentiation. The process of dedifferentiation was also confirmed by single cell clonal analysis. Finally the dedifferentiated cells were used for adipogenesis, osteogenesis and chondrogenesis. Histology, FACS, qPCR and GeneChip analyses of undifferentiated MSC, adipogenic-differentiated and dedifferentiated cells were performed. Interestingly, gene profiling and bioinformatics demonstrated that upregulation (DHCR24, G0S2, MAP2K6, SESN3) and downregulation (DST, KAT2, MLL5, RB1, SMAD3, ZAK) of distinct genes have an association with cell cycle arrest in adipogenic-differentiated cells and perhaps narrow down the lineage potency. However, the upregulation (CCND1, CHEK, HGF, HMGA2, SMAD3) and downregulation (CCPG1, RASSF4, RGS2) of these genes have an association with cell cycle progression and maybe motivate dedifferentiation of adipogenic-differentiated cells. We found that dedifferentiated cells have a multilineage potency comparable to MSC, and also observed the associative role of proliferation genes with cell cycle arrest and progression. Concluded, our results indicate that transdifferentiation of adipogenic-differentiated cells into osteogenic- or chondrogenic-differentiated cells proceeds via dedifferentiation and correlates with cell cycle arresting and deriving genes. Regarding clinical use, the knowledge of potency and underlying mechanisms are prerequisites.
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Affiliation(s)
- Mujib Ullah
- Tissue Engineering Laboratory & Berlin-Brandenburg Center for Regenerative Therapies, Dept. of Rheumatology and Clinical Immunology, Charité-University Medicine Berlin, Charitéplatz 1, 10117 Berlin, Germany.
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16
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Bowles J, Koopman P. Precious Cargo: Regulation of Sex-Specific Germ Cell Development in Mice. Sex Dev 2013; 7:46-60. [DOI: 10.1159/000342072] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Schmidt CM, Hood WR. Calcium availability influences litter size and sex ratio in white-footed mice (Peromyscus leucopus). PLoS One 2012; 7:e41402. [PMID: 22870218 PMCID: PMC3409861 DOI: 10.1371/journal.pone.0041402] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Accepted: 06/25/2012] [Indexed: 11/18/2022] Open
Abstract
The production of offspring typically requires investment of resources derived from both the environment and maternal somatic reserves. As such, the availability of either of these types of resources has the potential to limit the degree to which resources are allocated to reproduction. Theory and empirical studies have argued that mothers modify reproductive performance relative to exogenous resource availability and maternal condition by adjusting size, number or sex of offspring produced. These relationships have classically been defined relative to availability of energy sources; however, in vertebrates, calcium also plays a critical role in offspring production, as a considerable amount of calcium is required to support the development of offspring skeleton(s). We tested whether the availability of calcium influences reproductive output by providing female white-footed mice with a low-calcium or standard diet from reproductive maturity to senescence. We then compared maternal skeletal condition and reproductive output, based on offspring mass, offspring number and litter sex ratio, between dietary treatments. Mothers on the low-calcium diet exhibited diminished skeletal condition at senescence and produced smaller and strongly female-biased litters. We show that skeletal condition and calcium intake can influence sex ratio and reproductive output following general theoretical models of resource partitioning during reproduction.
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Affiliation(s)
- Christina M Schmidt
- Department of Biological Sciences, Auburn University, Auburn Alabama, United States of America.
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18
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Abstract
A major dogma in cancer research is that cancer begins at the cellular level. Because of this single-cell origin, evolutionary principles have often been used to explain how somatic cancer cells are selected at a sub-individual level. The traditional application of Darwinian theory, however, in which the colony of cells constituting an individual is regarded as a whole, has not been applied extensively to the understanding of cancer until recently. Two proponents for this view, Breivik and Gaudernack, have suggested that in certain situations the cost of DNA repair might exceed the cost of errors. This model predicts that genetic stability is configured for an optimal cost-benefit relationship. Natural selection is not expected to have produced the best genetic stability available in the human body, merely the best compromise of DNA repair and costs. Repair and maintenance of the vast human genome is thermodynamically expensive, and an optimal balance between DNA repair and dietary needs is likely to have originated. Furthermore, fast growth conveys significant advantages such as early maturation or cognitive development, but usually at the expense of replication accuracy. Thus, a compromise between growth speed and cancer risk is likely to have taken place. These and other ecological mechanisms have probably prevented genomic stability to reach its full potential in the human body. In contrast, germ lines express near perfect DNA maintenance. Although germ cells are specialized DNA-conserving cells with few other functions, it's not given that their proteins will all be incompatible with the somatic cell. One approach to study this would be to systematically explore which DNA-stability and -repair systems are unique in germ cells, and induce their expression in invertebrate and mammalian model organisms. This could unveil which DNA-repair systems are switched off in the somatic cell lines, as they are incompatible, and which are absent due to evolution. The present review discuss different DNA-repair systems and cell cycle check point control mechanisms shown to be different or unique in the germ cell, and how they may be utilized in cancer therapy.
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Abe K, Naruse C, Kato T, Nishiuchi T, Saitou M, Asano M. Loss of heterochromatin protein 1 gamma reduces the number of primordial germ cells via impaired cell cycle progression in mice. Biol Reprod 2011; 85:1013-24. [PMID: 21778144 DOI: 10.1095/biolreprod.111.091512] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Signals from extraembryonic tissues in mice determine which proximal epiblast cells become primordial germ cells (PGCs). After their specification, approximately 40 PGCs appear at the base of the allantoic bud and migrate to the genital ridges, where they expand to about 25 000 cells by Embryonic Day (E)13.5. The heterochromatin protein 1 (HP1) family members HP1alpha, HP1beta, and HP1gamma (CBX5, CBX1, and CBX3, respectively) are thought to induce heterochromatin structure and to regulate gene expression by binding methylated histone H3 lysine 9. We found a dramatic loss of germ cells before meiosis in HP1gamma mutant (HP1gamma(-/-)) mice that we generated previously. The reduction in PGCs in HP1gamma(-/-) embryos was detectable from the early bud stage (E7.25), and the number of HP1gamma(-/-) PGCs was gradually reduced thereafter. Bromodeoxyuridine incorporation into PGCs was significantly reduced in E7.25 and E12.5 HP1gamma(-/-) embryos. Furthermore, a lower proportion of HP1gamma(-/-) PGCs than wild-type PGCs was in S phase, and a higher proportion, respectively, was in G1 phase at E12.5. Moreover, the proportion of p21 (Cip, official symbol CDKN1A)-positive HP1gamma(-/-) PGCs was increased, suggesting that the G1/S phase transition was inhibited. However, no differences were detected between fate determination, migration, apoptosis, or histone modification of PGCs of control embryos and those of HP1gamma(-/-) embryos. Therefore, the reduction in PGCs in HP1gamma(-/-) embryos could be caused by impaired cell cycle in PGCs. These results suggest that HP1gamma plays an important role in keeping enough germ cells by regulating the PGC cell cycle.
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Affiliation(s)
- Kanae Abe
- Divisions of Transgenic Animal Science and Functional Genomics, Advanced Science Research Center, Kanazawa University, Kanazawa, Japan
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Abstract
The germ cell lineage is our lifelong reservoir of reproductive stem cells and our mechanism for transmitting genes to future generations. These highly specialised cells are specified early during development and then migrate to the embryonic gonads where sex differentiation occurs. Germ cell sex differentiation is directed by the somatic gonadal environment and is characterised by two distinct cell cycle states that are maintained until after birth. In the mouse, XY germ cells in a testis cease mitotic proliferation and enter G(1)/G(0) arrest from 12.5 dpc, while XX germ cells in an ovary enter prophase I of meiosis from 13.5 dpc. This chapter discusses the factors known to control proliferation and survival of germ cells during their journey of specification to sex differentiation during development.
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Affiliation(s)
- Cassy M Spiller
- Division of Molecular Genetics and Development, Institute for Molecular Bioscience, The University of Queensland, Brisbane QLD 4072, Australia
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Ewen K, Jackson A, Wilhelm D, Koopman P. A Male-Specific Role for p38 Mitogen-Activated Protein Kinase in Germ Cell Sex Differentiation in Mice1. Biol Reprod 2010; 83:1005-14. [DOI: 10.1095/biolreprod.110.086801] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Ohta K, Lin Y, Hogg N, Yamamoto M, Yamazaki Y. Direct effects of retinoic acid on entry of fetal male germ cells into meiosis in mice. Biol Reprod 2010; 83:1056-63. [PMID: 20826729 DOI: 10.1095/biolreprod.110.085787] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In both male and female germ cells of mice, retinoic acid (RA) is a meiosis-inducing factor. In the present study, we used a germ cell culture system to examine the direct effects of RA on meiotic initiation in male germ cells at the stage when they normally enter mitotic arrest to determine the extent to which fetal male germ cells can respond to exogenous RA to alter their sex-specific pathway. Male germ cells between 13.5 and 15.5 days postcoitum (dpc) were isolated from Pou5fl-green fluorescent protein transgenic fetuses and cultured with or without RA for up to 6 days. In the absence of RA, male germ cells did not undergo DNA replication and did not enter meiosis in culture. However, in the presence of RA, male germ cells isolated at 13.5 dpc expressed Stra8 and initiated the meiotic process. The ratio of cells entering meiosis gradually decreased as cells were isolated progressively at later stages. By 15.5 dpc, isolated male germ cells lost their ability to respond to RA signaling. These cells remained dispersed as single cells and progressed along the male differentiation pathway, as evidenced by the establishment of male-specific methylation imprints regardless of the presence or absence of RA. We conclude that male germ cells maintain sexual bipotency until 14.5 dpc that can be reversed by the addition of RA. Once male germ cells enter mitotic arrest, however, they appear to be committed irreversibly to the male-specific differentiation pathway even in the presence of exogenously added RA.
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Affiliation(s)
- Kohei Ohta
- Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii 96813, USA
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Abstract
Primordial germ cells (PGCs) are embryonic progenitors for the gametes. In the gastrulating mouse embryo, a small group of cells begin expressing a unique set of genes and so commit to the germline. Over the next 3-5 days, these PGCs migrate anteriorly and increase rapidly in number via mitotic division before colonizing the newly formed gonads. PGCs then express a different set of unique genes, their inherited epigenetic imprint is erased and an individual methylation imprint is established, and for female PGCs, the silent X chromosome is reactivated. At this point, germ cells (GCs) commit to either a female or male sexual lineage, denoted by meiosis entry and mitotic arrest, respectively. This developmental program is determined by cues emanating from the somatic environment.
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Affiliation(s)
- Katherine A Ewen
- Division of Molecular Genetics and Development, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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Spiller CM, Wilhelm D, Koopman P. Retinoblastoma 1 Protein Modulates XY Germ Cell Entry into G1/G0 Arrest During Fetal Development in Mice1. Biol Reprod 2010; 82:433-43. [DOI: 10.1095/biolreprod.109.078691] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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