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Li WJ, Li RY, Wang DY, Shen M, Liu HL. CXCR3 participates in asymmetric division of mouse oocytes by modulating actin dynamics. Theriogenology 2024; 225:43-54. [PMID: 38788628 DOI: 10.1016/j.theriogenology.2024.05.028] [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: 12/29/2023] [Revised: 04/24/2024] [Accepted: 05/18/2024] [Indexed: 05/26/2024]
Abstract
Extensive research has been conducted on the role of CXCR3 in immune responses and inflammation. However, the role of CXCR3 in the reproductive system, particularly in oocyte development, remains unknown. In this study, we present findings on the involvement of CXCR3 in the meiotic division process of mouse oocytes. We found CXCR3 was expressed consistently throughout the entire maturation process of mouse oocyte. Inhibition of CXCR3 impaired the asymmetric division of oocyte, while the injection of Cxcr3 mRNA was capable of restoring these defects. Further study showed that inhibition of CXCR3 perturbed spindle migration by affecting LIMK/cofilin pathway-mediated actin remodeling. Knockout of CXCR3 led to an upregulation of actin-binding protein and an increased ATP level in GV-stage oocytes, while maintaining normal actin dynamics during the process of meiosis. Additionally, we noticed the expression level of DYNLT1 is markedly elevated in CXCR3-null oocytes. DYNLT1 bound with the Arp2/3 complex, and knockdown of DYNLT1 in CXCR3-null oocytes impaired the organization of cytoplasmic actin, suggesting the regulatory role of DYNLT1 in actin organization, and the compensatory expression of DYNLT1 may contribute to maintain normal actin dynamics in CXCR3-knockout oocytes. In summary, our findings provide insights into the intricate network of actin dynamics associated with CXCR3 during oocyte meiosis.
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Affiliation(s)
- Wei-Jian Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| | - Rong-Yang Li
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.
| | - Da-Yu Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| | - Ming Shen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| | - Hong-Lin Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
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2
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Wang W, Shi Z, Zhang D, Hou W, Ma H, Liu X, Zhang Y, Zhu J, Yang Z, Jia B, Xu Q, Zhang Y, Zhang M. Kinesin motor KIF16A regulates microtubule stability and actin-dependent spindle migration in mouse oocyte meiosis. FASEB J 2024; 38:e23750. [PMID: 38888878 DOI: 10.1096/fj.202400989r] [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: 05/02/2024] [Revised: 05/22/2024] [Accepted: 06/06/2024] [Indexed: 06/20/2024]
Abstract
Kif16A, a member of the kinesin-3 family of motor proteins, has been shown to play crucial roles in inducing mitotic arrest, apoptosis, and mitotic cell death. However, its roles during oocyte meiotic maturation have not been fully defined. In this study, we report that Kif16A exhibits unique accumulation on the spindle apparatus and colocalizes with microtubule fibers during mouse oocyte meiotic maturation. Targeted depletion of Kif16A using gene-targeting siRNA disrupts the progression of the meiotic cell cycle. Furthermore, Kif16A depletion leads to aberrant spindle assembly and chromosome misalignment in oocytes. Our findings also indicate that Kif16A depletion reduces tubulin acetylation levels and compromises microtubule resistance to depolymerizing drugs, suggesting its crucial role in microtubule stability maintenance. Notably, we find that the depletion of Kif16A results in a notably elevated incidence of defective kinetochore-microtubule attachments and the absence of BubR1 localization at kinetochores, suggesting a critical role for Kif16A in the activation of the spindle assembly checkpoint (SAC) activity. Additionally, we observe that Kif16A is indispensable for proper actin filament distribution, thereby impacting spindle migration. In summary, our findings demonstrate that Kif16A plays a pivotal role in regulating microtubule and actin dynamics crucial for ensuring both spindle assembly and migration during mouse oocyte meiotic maturation.
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Affiliation(s)
- Wei Wang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Zhenhu Shi
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Dandan Zhang
- Department of Reproductive Medicine, General Hospital of Wanbei Coal Group, Key Laboratory of Reproductive Medicine and Embryo of Suzhou City, Suzhou, China
| | - Wenwen Hou
- Center of Reproductive Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
| | - Huijie Ma
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Xinyu Liu
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Yongteng Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Jinbao Zhu
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Zaishan Yang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Bo Jia
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Qimei Xu
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Yunhai Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Mianqun Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
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3
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Zhang Y, Meng F, Zhao T, Du J, Li N, Qiao X, Yao Y, Wu D, Peng F, Wang D, Yang S, Shi J, Liu R, Zhou W, Li L, Hao A. Melatonin improves mouse oocyte quality from 2-ethylhexyl diphenyl phosphate-induced toxicity by enhancing mitochondrial function. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116559. [PMID: 38865937 DOI: 10.1016/j.ecoenv.2024.116559] [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: 03/01/2024] [Revised: 05/14/2024] [Accepted: 06/04/2024] [Indexed: 06/14/2024]
Abstract
2-Ethylhexyl diphenyl phosphate (EHDPP) is a representative organophosphorus flame retardant (OPFR) that has garnered attention due to its widespread use and potential adverse effects. EHDPP exhibits cytotoxicity, genotoxicity, developmental toxicity, and endocrine disruption. However, the toxicity of EHDPP in mammalian oocytes and the underlying mechanisms remain poorly understood. Melatonin is a natural free radical scavenger that has demonstrated cytoprotective properties. In this study, we investigated the effect of EHDPP on mouse oocytes in vitro culture system and evaluated the rescue effect of melatonin on oocytes exposed to EHDPP. Our results indicated that EHDPP disrupted oocyte maturation, resulting in the majority of oocytes arrested at the metaphase I (MI) stage, accompanied by cytoskeletal damage and elevated levels of reactive oxygen species (ROS). Nevertheless, melatonin supplementation partially rescued EHDPP-induced mouse oocyte maturation impairment. Results of single-cell RNA sequencing (scRNA-seq) analysis elucidated potential mechanisms underlying these protective effects. According to the results of scRNA-seq, we conducted further tests and found that EHDPP primarily disrupts mitochondrial distribution and function, kinetochore-microtubule (K-MT) attachment, DNA damage, apoptosis, and histone modification, which were rescued upon the supplementation of melatonin. This study reveals the mechanisms of EHDPP on female reproduction and indicates the efficacy of melatonin as a therapeutic intervention for EHDPP-induced defects in mouse oocytes.
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Affiliation(s)
- Yanan Zhang
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Fei Meng
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Tiantian Zhao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Jingyi Du
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Naigang Li
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Xinghui Qiao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Yuan Yao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Dong Wu
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Fan Peng
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Dongshuang Wang
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Shuang Yang
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Jiaming Shi
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Ruoxi Liu
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Wenjuan Zhou
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Lei Li
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
| | - Aijun Hao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
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4
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Zhang C, Yin X, Dong X, Shi M, Xu Y, Gao J, Wang J, Song J, Liu B, Wu K. 2-bromoacetamide exposure impairs oocyte maturation in mice and humans primarily via disrupting the cytoskeleton. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 272:116105. [PMID: 38364760 DOI: 10.1016/j.ecoenv.2024.116105] [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: 01/30/2024] [Accepted: 02/09/2024] [Indexed: 02/18/2024]
Abstract
2-bromoacetamide (BAcAm) is an emerging class of unregulated disinfection by-products (DBPs), with potent cytogenetic and developmental toxicity in animals. However, whether BAcAm exerts toxic effects on mammalian oocyte quality remains to be elucidate. In this research, we investigated the effect of BAcAm on mouse and human oocyte maturation with an in vitro culture system. Our results revealed that BAcAm exposure hindered the extrusion of the first polar body, disrupted the spindle organization and reduced the competence of embryo development after fertilization in the mouse oocytes. Results of single-cell RNA sequencing (scRNA-seq) showed that 605 differentially expressed genes (DEGs) were identified in the BAcAm exposed mouse oocytes, among which 366 were up-regulated and 239 were down-regulated. Gene Ontology (GO) analysis further revealed that DEGs were mainly enriched in mitochondrial functions, oxidative stress, cytoskeleton, endoplasmic reticulum (ER), Golgi and protein synthesis, DNA damage and apoptosis. We then conducted further tests in these aspects and discovered that BAcAm exposure principally perturbed the function of microtubule and actin cytoskeleton. This finding was confirmed in human oocytes. Overall, our data suggest that BAcAm exposure disturbs the cytoskeleton function, thus impairing oocyte maturation. These data, for the first time, provide a comprehensive view for the toxic effects of BAcAm on oocyte maturation.
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Affiliation(s)
- Chuanxin Zhang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Xiaoyu Yin
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Xueqi Dong
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Mingze Shi
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Yuxin Xu
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Jiayin Gao
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Jiawei Wang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Jinzhu Song
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Boyang Liu
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China
| | - Keliang Wu
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong 250012, China; Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong 250012, China; Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong 250012, China; Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong 250012, China; Shandong Technology Innovation Center for Reproductive Health, Jinan, Shandong 250012, China; National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Reproductive Medicine and Offspring Health, Shandong University, Jinan, Shandong 250012, China.
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5
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Bourdais A, Dehapiot B, Halet G. MRCK activates mouse oocyte myosin II for spindle rotation and male pronucleus centration. J Cell Biol 2023; 222:e202211029. [PMID: 37651121 PMCID: PMC10470461 DOI: 10.1083/jcb.202211029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 06/24/2023] [Accepted: 08/09/2023] [Indexed: 09/01/2023] Open
Abstract
Asymmetric meiotic divisions in oocytes rely on spindle positioning in close vicinity to the cortex. In metaphase II mouse oocytes, eccentric spindle positioning triggers cortical polarization, including the build-up of an actin cap surrounded by a ring of activated myosin II. While the role of the actin cap in promoting polar body formation is established, ring myosin II activation mechanisms and functions have remained elusive. Here, we show that ring myosin II activation requires myotonic dystrophy kinase-related Cdc42-binding kinase (MRCK), downstream of polarized Cdc42. MRCK inhibition resulted in spindle rotation defects during anaphase II, precluding polar body extrusion. Remarkably, disengagement of segregated chromatids from the anaphase spindle could rescue rotation. We further show that the MRCK/myosin II pathway is activated in the fertilization cone and is required for male pronucleus migration toward the center of the zygote. These findings provide novel insights into the mechanism of myosin II activation in oocytes and its role in orchestrating asymmetric division and pronucleus centration.
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Affiliation(s)
- Anne Bourdais
- University of Rennes, CNRS - UMR 6290, Institute of Genetics and Development of Rennes, Rennes, France
| | - Benoit Dehapiot
- University of Rennes, CNRS - UMR 6290, Institute of Genetics and Development of Rennes, Rennes, France
| | - Guillaume Halet
- University of Rennes, CNRS - UMR 6290, Institute of Genetics and Development of Rennes, Rennes, France
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McGorty RJ, Currie CJ, Michel J, Sasanpour M, Gunter C, Lindsay KA, Rust MJ, Katira P, Das M, Ross JL, Robertson-Anderson RM. Kinesin and myosin motors compete to drive rich multiphase dynamics in programmable cytoskeletal composites. PNAS NEXUS 2023; 2:pgad245. [PMID: 37575673 PMCID: PMC10416814 DOI: 10.1093/pnasnexus/pgad245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/07/2023] [Accepted: 07/17/2023] [Indexed: 08/15/2023]
Abstract
The cellular cytoskeleton relies on diverse populations of motors, filaments, and binding proteins acting in concert to enable nonequilibrium processes ranging from mitosis to chemotaxis. The cytoskeleton's versatile reconfigurability, programmed by interactions between its constituents, makes it a foundational active matter platform. However, current active matter endeavors are limited largely to single force-generating components acting on a single substrate-far from the composite cytoskeleton in cells. Here, we engineer actin-microtubule (MT) composites, driven by kinesin and myosin motors and tuned by crosslinkers, to ballistically restructure and flow with speeds that span three orders of magnitude depending on the composite formulation and time relative to the onset of motor activity. Differential dynamic microscopy analyses reveal that kinesin and myosin compete to delay the onset of acceleration and suppress discrete restructuring events, while passive crosslinking of either actin or MTs has an opposite effect. Our minimal advection-diffusion model and spatial correlation analyses correlate these dynamics to structure, with motor antagonism suppressing reconfiguration and demixing, while crosslinking enhances clustering. Despite the rich formulation space and emergent formulation-dependent structures, the nonequilibrium dynamics across all composites and timescales can be organized into three classes-slow isotropic reorientation, fast directional flow, and multimode restructuring. Moreover, our mathematical model demonstrates that diverse structural motifs can arise simply from the interplay between motor-driven advection and frictional drag. These general features of our platform facilitate applicability to other active matter systems and shed light on diverse ways that cytoskeletal components can cooperate or compete to enable wide-ranging cellular processes.
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Affiliation(s)
- Ryan J McGorty
- Department of Physics and Biophysics, University of San Diego, San Diego, CA 92110, USA
| | - Christopher J Currie
- Department of Physics and Biophysics, University of San Diego, San Diego, CA 92110, USA
| | - Jonathan Michel
- School of Physics and Astronomy, Rochester Institute of Technology, Rochester, NY 14623, USA
| | - Mehrzad Sasanpour
- Department of Physics and Biophysics, University of San Diego, San Diego, CA 92110, USA
| | - Christopher Gunter
- Department of Mechanical Engineering, San Diego State University, San Diego, CA 92182, USA
| | - K Alice Lindsay
- Department of Physics, Syracuse University, Syracuse, NY 13244, USA
| | - Michael J Rust
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637, USA
| | - Parag Katira
- Department of Mechanical Engineering, San Diego State University, San Diego, CA 92182, USA
| | - Moumita Das
- School of Physics and Astronomy, Rochester Institute of Technology, Rochester, NY 14623, USA
| | - Jennifer L Ross
- Department of Physics, Syracuse University, Syracuse, NY 13244, USA
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7
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Jiang Y, He Y, Pan X, Wang P, Yuan X, Ma B. Advances in Oocyte Maturation In Vivo and In Vitro in Mammals. Int J Mol Sci 2023; 24:9059. [PMID: 37240406 PMCID: PMC10219173 DOI: 10.3390/ijms24109059] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
The quality and maturation of an oocyte not only play decisive roles in fertilization and embryo success, but also have long-term impacts on the later growth and development of the fetus. Female fertility declines with age, reflecting a decline in oocyte quantity. However, the meiosis of oocytes involves a complex and orderly regulatory process whose mechanisms have not yet been fully elucidated. This review therefore mainly focuses on the regulation mechanism of oocyte maturation, including folliculogenesis, oogenesis, and the interactions between granulosa cells and oocytes, plus in vitro technology and nuclear/cytoplasm maturation in oocytes. Additionally, we have reviewed advances made in the single-cell mRNA sequencing technology related to oocyte maturation in order to improve our understanding of the mechanism of oocyte maturation and to provide a theoretical basis for subsequent research into oocyte maturation.
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Affiliation(s)
- Yao Jiang
- School of Medical, Molecular and Forensic Sciences, Murdoch University, Murdoch, WA 6149, Australia
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Yingting He
- Guangdong Laboratory of Lingnan Modern Agriculture, National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Xiangchun Pan
- Guangdong Laboratory of Lingnan Modern Agriculture, National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Penghao Wang
- School of Medical, Molecular and Forensic Sciences, Murdoch University, Murdoch, WA 6149, Australia
| | - Xiaolong Yuan
- Guangdong Laboratory of Lingnan Modern Agriculture, National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Bin Ma
- School of Medical, Molecular and Forensic Sciences, Murdoch University, Murdoch, WA 6149, Australia
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Contractile and expansive actin networks in Drosophila: Developmental cell biology controlled by network polarization and higher-order interactions. Curr Top Dev Biol 2023; 154:99-129. [PMID: 37100525 DOI: 10.1016/bs.ctdb.2023.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Actin networks are central to shaping and moving cells during animal development. Various spatial cues activate conserved signal transduction pathways to polarize actin network assembly at sub-cellular locations and to elicit specific physical changes. Actomyosin networks contract and Arp2/3 networks expand, and to affect whole cells and tissues they do so within higher-order systems. At the scale of tissues, actomyosin networks of epithelial cells can be coupled via adherens junctions to form supracellular networks. Arp2/3 networks typically integrate with distinct actin assemblies, forming expansive composites which act in conjunction with contractile actomyosin networks for whole-cell effects. This review explores these concepts using examples from Drosophila development. First, we discuss the polarized assembly of supracellular actomyosin cables which constrict and reshape epithelial tissues during embryonic wound healing, germ band extension, and mesoderm invagination, but which also form physical borders between tissue compartments at parasegment boundaries and during dorsal closure. Second, we review how locally induced Arp2/3 networks act in opposition to actomyosin structures during myoblast cell-cell fusion and cortical compartmentalization of the syncytial embryo, and how Arp2/3 and actomyosin networks also cooperate for the single cell migration of hemocytes and the collective migration of border cells. Overall, these examples show how the polarized deployment and higher-order interactions of actin networks organize developmental cell biology.
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9
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Zhang Y, Fan B, Li X, Tang Y, Shao J, Liu L, Ren Y, Yang Y, Xu B. Phosphorylation of adducin-1 by TPX2 promotes interpolar microtubule homeostasis and precise chromosome segregation in mouse oocytes. Cell Biosci 2022; 12:205. [PMID: 36539904 PMCID: PMC9769001 DOI: 10.1186/s13578-022-00943-y] [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: 10/24/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND ADD1 (adducin-1) and TPX2 (targeting protein for Xklp2) are centrosomal proteins and regulate mitotic spindle assembly. Mammalian oocytes that segregate homologous chromosomes in Meiosis I and sister chromatids in Meiosis II with a spindle lacking centrosomes are more prone to chromosome segregation errors than in mitosis. However, the regulatory mechanisms of oocyte spindle assembly and the functions of ADD1 and TPX2 in this process remain elusive. RESULT We found that the expression levels and localization of ADD1, S726 phosphorylated ADD1 (p-ADD1), and TPX2 proteins exhibited spindle assembly-dependent dynamic changes during mouse oocyte meiosis. Taxol treatment, which stabilizes the microtubule polymer and protects it from disassembly, made the signals of ADD1, p-ADD1, and TPX2 present in the microtubule organizing centers of small asters and spindles. Knockdown of approximately 60% of ADD1 protein levels destabilized interpolar microtubules in the meiotic spindle, resulting in aberrant chromosome alignment, reduced first polar body extrusion, and increased aneuploidy in metaphase II oocytes, but did not affect K-fiber homeostasis and the expression and localization of TPX2. Strikingly, TPX2 deficiency caused increased protein content of ADD1, but decreased expression and detachment of p-ADD1 from the spindle, thereby arresting mouse oocytes at the metaphase I stage with collapsed spindles. CONCLUSION Phosphorylation of ADD1 at S726 by TPX2 mediates acentriolar spindle assembly and precise chromosome segregation in mouse oocytes.
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Affiliation(s)
- Ying Zhang
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China
| | - Bingfeng Fan
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China
| | - Xiaoxia Li
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China ,College of Animal Science and Technology, Jilin Agriculture Science and Technology University, Jilin, China
| | - Yu Tang
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China
| | - Jing Shao
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China
| | - Lixiang Liu
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China
| | - Yuhe Ren
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China
| | - Yifeng Yang
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China
| | - Baozeng Xu
- grid.410727.70000 0001 0526 1937Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, #4899 Juye Street, Jingyue District, Changchun, 130112 Jilin China ,grid.410727.70000 0001 0526 1937State Key Laboratory for Molecular Biology of Special Economic Animals, Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, Jilin China
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10
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Ye Y, Homer HA. Two‐step nuclear centring by competing microtubule‐ and actin‐based mechanisms in 2‐cell mouse embryos. EMBO Rep 2022; 23:e55251. [DOI: 10.15252/embr.202255251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 09/01/2022] [Accepted: 09/12/2022] [Indexed: 11/07/2022] Open
Affiliation(s)
- Yunan Ye
- The Christopher Chen Oocyte Biology Research Laboratory, Centre for Clinical Research The University of Queensland Herston QLD Australia
| | - Hayden A Homer
- The Christopher Chen Oocyte Biology Research Laboratory, Centre for Clinical Research The University of Queensland Herston QLD Australia
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11
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Ikeda S, Fukasawa H, Mabuchi T, Hirata S. Cytoplasmic streaming induced by intracytoplasmic spindle translocation contributes to developmental competence through mitochondrial distribution in mouse oocytes. F&S SCIENCE 2022; 3:210-216. [PMID: 35661817 DOI: 10.1016/j.xfss.2022.05.003] [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: 09/10/2021] [Revised: 05/26/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To evaluate the developmental competency of mouse metaphase II oocytes and the pattern of mitochondrial positioning through cytoplasmic streaming in mouse metaphase II oocytes. DESIGN We observed cytoplasmic streaming as movement indicated by fluorescently stained mitochondria using a newly developed method in which the spindle is translocated to the opposite site of the oocyte. This method is termed as intracytoplasmic spindle translocation (ICST). SETTING University research laboratory. ANIMALS Female B6D2F1 mice. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Fresh oocytes, postovulatory-aged oocytes, and oocytes treated with cytochalasin B were classified based on the presence of cytoplasmic streaming induced by ICST. The pattern of redistributed mitochondria and developmental competence caused by parthenogenetic activation were evaluated in oocytes with or without cytoplasmic streaming. RESULT(S) Induced cytoplasmic streaming occurred in 84% of the fresh oocytes but not in the postovulatory-aged oocytes and the oocytes treated with cytochalasin B. Abnormal mitochondrial aggregation was observed in oocytes in which cytoplasmic streaming was not induced. Furthermore, the developmental competence was significantly lower in oocytes without cytoplasmic streaming. CONCLUSION(S) Cytoplasmic streaming induced by ICST contributes to developmental competence through the redistribution of mitochondria and may be a valuable criterion for predicting early developmental competence in mouse oocytes.
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Affiliation(s)
- Shoko Ikeda
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Hiroko Fukasawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Tadashi Mabuchi
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Shuji Hirata
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan.
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12
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Chromosome Segregation in the Oocyte: What Goes Wrong during Aging. Int J Mol Sci 2022; 23:ijms23052880. [PMID: 35270022 PMCID: PMC8911062 DOI: 10.3390/ijms23052880] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 02/22/2022] [Accepted: 03/05/2022] [Indexed: 12/13/2022] Open
Abstract
Human female fertility and reproductive lifespan decrease significantly with age, resulting in an extended post-reproductive period. The central dogma in human female reproduction contains two important aspects. One is the pool of oocytes in the human ovary (the ovarian reserve; approximately 106 at birth), which diminishes throughout life until menopause around the age of 50 (approximately 103 oocytes) in women. The second is the quality of oocytes, including the correctness of meiotic divisions, among other factors. Notably, the increased rate of sub- and infertility, aneuploidy, miscarriages, and birth defects are associated with advanced maternal age, especially in women above 35 years of age. This postponement is also relevant for human evolution; decades ago, the female aging-related fertility drop was not as important as it is today because women were having their children at a younger age. Spindle assembly is crucial for chromosome segregation during each cell division and oocyte maturation, making it an important event for euploidy. Consequently, aberrations in this segregation process, especially during the first meiotic division in human eggs, can lead to implantation failure or spontaneous abortion. Today, human reproductive medicine is also facing a high prevalence of aneuploidy, even in young females. However, the shift in the reproductive phase of humans and the strong increase in errors make the problem much more dramatic at later stages of the female reproductive phase. Aneuploidy in human eggs could be the result of the non-disjunction of entire chromosomes or sister chromatids during oocyte meiosis, but partial or segmental aneuploidies are also relevant. In this review, we intend to describe the relevance of the spindle apparatus during oocyte maturation for proper chromosome segregation in the context of maternal aging and the female reproductive lifespan.
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13
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Lee G, Leech G, Lwin P, Michel J, Currie C, Rust MJ, Ross JL, McGorty RJ, Das M, Robertson-Anderson RM. Active cytoskeletal composites display emergent tunable contractility and restructuring. SOFT MATTER 2021; 17:10765-10776. [PMID: 34792082 PMCID: PMC9239752 DOI: 10.1039/d1sm01083b] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The cytoskeleton is a model active matter system that controls processes as diverse as cell motility and mechanosensing. While both active actomyosin dynamics and actin-microtubule interactions are key to the cytoskeleton's versatility and adaptability, an understanding of their interplay is lacking. Here, we couple microscale experiments with mechanistic modeling to elucidate how connectivity, rigidity, and force-generation affect emergent material properties in composite networks of actin, tubulin, and myosin. We use multi-spectral imaging, time-resolved differential dynamic microscopy and spatial image autocorrelation to show that ballistic contraction occurs in composites with sufficient flexibility and motor density, but that a critical fraction of microtubules is necessary to sustain controlled dynamics. The active double-network models we develop, which recapitulate our experimental findings, reveal that while percolated actomyosin networks are essential for contraction, only composites with comparable actin and microtubule densities can simultaneously resist mechanical stresses while supporting substantial restructuring. The comprehensive phase map we present not only provides important insight into the different routes the cytoskeleton can use to alter its dynamics and structure, but also serves as a much-needed blueprint for designing cytoskeleton-inspired materials that couple tunability with resilience and adaptability for diverse applications ranging from wound healing to soft robotics.
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Affiliation(s)
- Gloria Lee
- Department of Physics and Biophysics, University of San Diego, USA.
| | - Gregor Leech
- Department of Physics and Biophysics, University of San Diego, USA.
| | - Pancy Lwin
- School of Physics and Astronomy, Rochester Institute of Technology, USA
| | - Jonathan Michel
- School of Physics and Astronomy, Rochester Institute of Technology, USA
| | | | - Michael J Rust
- Department of Molecular Genetics and Cell Biology, University of Chicago, USA
| | | | - Ryan J McGorty
- Department of Physics and Biophysics, University of San Diego, USA.
| | - Moumita Das
- School of Physics and Astronomy, Rochester Institute of Technology, USA
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14
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Hu LL, Pan MH, Yang FL, Zong ZA, Tang F, Pan ZN, Lu X, Ren YP, Wang JL, Sun SC. FASCIN regulates actin assembly for spindle movement and polar body extrusion in mouse oocyte meiosis. J Cell Physiol 2021; 236:7725-7733. [PMID: 34018605 DOI: 10.1002/jcp.30443] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 04/07/2021] [Accepted: 05/12/2021] [Indexed: 01/15/2023]
Abstract
During mouse oocyte meiotic maturation, actin filaments play multiple roles in meiosis such as spindle migration and cytokinesis. FASCIN is shown to be an actin-binding and bundling protein, making actin filaments tightly packed and parallel-aligned, and FASCIN is involved in several cellular processes like adhesion and migration. FASCIN is also a potential prognostic biomarker and therapeutic target for the treatment of metastatic disease. However, little is known about the functions of FASCIN in oocyte meiosis. In the present study, we knocked down the expression of FASCIN, and our results showed that FASCIN was essential for oocyte maturation. FASCIN was all expressed in the different stages of oocyte meiosis, and it mainly localized at the cortex of oocytes from the GV stage to the MII stage and showed a similar localization pattern with actin and DAAM1. Depletion of FASCIN affected the extrusion of the first polar body, and we also observed that some oocytes extruded from the large polar bodies. This might have resulted from the defects of actin assembly, which further affected the meiotic spindle positioning. In addition, we showed that inhibition of PKC activity decreased FASCIN expression, indicating that FASCIN might be regulated by PKC. Taken together, our results provided evidence for the important role of FASCIN on actin filaments for spindle migration and polar body extrusion in mouse oocyte meiosis.
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Affiliation(s)
- Lin-Lin Hu
- Reproductive Medicine Center, the Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Meng-Hao Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Feng-Lian Yang
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Zi-Ao Zong
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Feng Tang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Zhen-Nan Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xiang Lu
- College of Basic Medical Sciences, Zunyi Medical University, Zunyi, China
| | - Yan-Ping Ren
- College of Basic Medical Sciences, Zunyi Medical University, Zunyi, China
| | - Jun-Li Wang
- School of Laboratory Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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15
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Dehapiot B, Clément R, Bourdais A, Carrière V, Huet S, Halet G. RhoA- and Cdc42-induced antagonistic forces underlie symmetry breaking and spindle rotation in mouse oocytes. PLoS Biol 2021; 19:e3001376. [PMID: 34491981 PMCID: PMC8448345 DOI: 10.1371/journal.pbio.3001376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 09/17/2021] [Accepted: 07/30/2021] [Indexed: 11/25/2022] Open
Abstract
Mammalian oocyte meiotic divisions are highly asymmetric and produce a large haploid gamete and 2 small polar bodies. This relies on the ability of the cell to break symmetry and position its spindle close to the cortex before anaphase occurs. In metaphase II–arrested mouse oocytes, the spindle is actively maintained close and parallel to the cortex, until fertilization triggers sister chromatid segregation and the rotation of the spindle. The latter must indeed reorient perpendicular to the cortex to enable cytokinesis ring closure at the base of the polar body. However, the mechanisms underlying symmetry breaking and spindle rotation have remained elusive. In this study, we show that spindle rotation results from 2 antagonistic forces. First, an inward contraction of the cytokinesis furrow dependent on RhoA signaling, and second, an outward attraction exerted on both sets of chromatids by a Ran/Cdc42-dependent polarization of the actomyosin cortex. By combining live segmentation and tracking with numerical modeling, we demonstrate that this configuration becomes unstable as the ingression progresses. This leads to spontaneous symmetry breaking, which implies that neither the rotation direction nor the set of chromatids that eventually gets discarded are biologically predetermined. Mammalian oocyte meiotic divisions are highly asymmetric and produce a large haploid gamete and two small polar bodies, but the mechanisms underlying the required symmetry breaking and spindle rotation have remained elusive. This study shows that spindle rotation in activated mouse oocytes relies on spontaneous symmetry breaking resulting from an unstable configuration generated by cleavage furrow ingression and cortical chromosome attraction.
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Affiliation(s)
- Benoit Dehapiot
- Aix Marseille Université, CNRS, IBDM-UMR7288, Turing Center for Living Systems, Marseille, France
- Univ Rennes, CNRS, IGDR—UMR 6290, Rennes, France
- * E-mail: (BD); (GH)
| | - Raphaël Clément
- Aix Marseille Université, CNRS, IBDM-UMR7288, Turing Center for Living Systems, Marseille, France
| | | | | | | | - Guillaume Halet
- Univ Rennes, CNRS, IGDR—UMR 6290, Rennes, France
- * E-mail: (BD); (GH)
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16
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Sharma M, Jiang T, Jiang ZC, Moguel-Lehmer CE, Harris TJ. Emergence of a smooth interface from growth of a dendritic network against a mechanosensitive contractile material. eLife 2021; 10:66929. [PMID: 34423780 PMCID: PMC8410080 DOI: 10.7554/elife.66929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 08/20/2021] [Indexed: 11/13/2022] Open
Abstract
Structures and machines require smoothening of raw materials. Self-organized smoothening guides cell and tissue morphogenesis and is relevant to advanced manufacturing. Across the syncytial Drosophila embryo surface, smooth interfaces form between expanding Arp2/3-based actin caps and surrounding actomyosin networks, demarcating the circumferences of nascent dome-like compartments used for pseudocleavage. We found that forming a smooth and circular boundary of the surrounding actomyosin domain requires Arp2/3 in vivo. To dissect the physical basis of this requirement, we reconstituted the interacting networks using node-based models. In simulations of actomyosin networks with local clearances in place of Arp2/3 domains, rough boundaries persisted when myosin contractility was low. With addition of expanding Arp2/3 network domains, myosin domain boundaries failed to smoothen, but accumulated myosin nodes and tension. After incorporating actomyosin mechanosensitivity, Arp2/3 network growth locally induced a surrounding contractile actomyosin ring that smoothened the interface between the cytoskeletal domains, an effect also evident in vivo. In this way, a smooth structure can emerge from the lateral interaction of irregular active materials.
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Affiliation(s)
- Medha Sharma
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
| | - Tao Jiang
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
| | - Zi Chen Jiang
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
| | | | - Tony Jc Harris
- Department of Cell and Systems Biology, University of Toronto, Toronto, Canada
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17
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Zhou CJ, Wang DH, Kong XW, Han Z, Hao X, Wang XY, Wen X, Liang CG. Protein regulator of cytokinesis 1 regulates chromosome dynamics and cytoplasmic division during mouse oocyte meiotic maturation and early embryonic development. FEBS J 2021; 287:5130-5147. [PMID: 32562308 DOI: 10.1111/febs.15458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 06/01/2020] [Accepted: 06/15/2020] [Indexed: 11/28/2022]
Abstract
In contrast to the homeokinesis of mitosis, asymmetric division of cytoplasm is the conspicuous feature of meiosis in mammalian oocytes. Protein regulator of cytokinesis 1 (PRC1) is an important regulator during mitotic spindle assembly and cytoplasmic division, but its functions in oocyte meiosis and early embryo development have not been fully elucidated. In this study, we detected PRC1 expression and localization and revealed a nuclear, spindle midzone-related dynamic pattern throughout meiotic and mitotic progressions. Treatment of oocytes with the reagents taxol or nocodazole disturbed the distribution of PRC1 in metaphase II oocytes. Further, PRC1 depletion led to failure of first polar body (PB1) extrusion and spindle migration, aneuploidy and defective kinetochore-microtubule attachment and spindle assembly. Overexpression of PRC1 resulted in PB1 extrusion failure, aneuploidy and serious defects of spindle assembly. To investigate PRC1 function in early embryos, we injected Prc1 morpholino into zygotes and 2-cell stage embryos. Depletion of PRC1 in zygotes impaired 4-cell, morula and blastocyst formation. Loss of PRC1 in single or double blastomeres in 2-cell stage embryos significantly impaired cell division, indicating its indispensable role in early embryo development. Co-immunoprecipitation showed that PRC1 interacts with polo-like kinase 1 (PLK1), and functional knockdown and rescue experiments demonstrated that PRC1 recruits PLK1 to the spindle midzone to regulate cytoplasmic division during meiosis. Finally, kinesin family member 4 knockdown downregulates PRC1 expression and leads to PRC1 localization failure. Taken together, our data suggest PRC1 plays an important role during oocyte maturation and early embryonic development by regulating chromosome dynamics and cytoplasmic division.
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Affiliation(s)
- Cheng-Jie Zhou
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China
| | - Dong-Hui Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China.,Chengdu Research Base of Giant Panda Breeding, Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Sichuan Academy of Giant Panda, Chengdu, Sichuan Province, China
| | - Xiang-Wei Kong
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China
| | - Zhe Han
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China
| | - Xin Hao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China
| | - Xing-Yue Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China
| | - Xin Wen
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China
| | - Cheng-Guang Liang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University, Hohhot, China
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18
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Petrushko MP, Buderatska NO, Gontar JV, Yurchuk TO. Morphological and Molecular Cytogenetic Characteristics of Giant Human Oocytes. CYTOL GENET+ 2021. [DOI: 10.3103/s0095452721020110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Xu Y, Sun MH, Li XH, Ju JQ, Chen LY, Sun YR, Sun SC. Modified hydrated sodium calcium aluminosilicate-supplemented diet protects porcine oocyte quality from zearalenone toxicity. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2021; 62:124-132. [PMID: 32683748 DOI: 10.1002/em.22399] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/06/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Zearalenone (ZEN) is one of the most common mycotoxins produced by fungus in contaminated feed. ZEN has multiple toxicities, including reproductive toxicity of domestic animals, particularly pigs. However, studies on the effects of ZEN on ovary/oocytes have been primarily based on in vitro experiments, and there is still no evidence from porcine in vivo models due to multiple limitations. Moreover, no report has investigated the effect of hydrated sodium calcium aluminosilicate (HSCAS) as a supplement on pig oocyte quality. In the present study, we fed pigs a 1.0 mg/kg ZEN-contaminated diet for 10 days. The results showed that pigs fed ZEN presented reduced oocyte-cumulus cell interactions, an increase in the number of denuded oocytes in ovaries, a decrease in the number of oocytes in each ovary, and an increase in the oocyte death rate. Oocytes from ZEN-exposed pigs exhibited a delayed cell cycle and abnormal cytoskeletal dynamics during meiotic maturation, which could be due to oxidative stress-induced autophagy. Moreover, we also show that supplementing the ZEN-contaminated diet with modified HSCAS effectively protected porcine oocyte quality. Taken together, our study provides in vivo data demonstrating the protective effects of HSCAS against ZEN toxicity in porcine oocytes.
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Affiliation(s)
- Yao Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Ming-Hong Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xiao-Han Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jia-Qian Ju
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | | | - Yu-Rong Sun
- Jiangsu Aomai Bio-tech Company, Nanjing, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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20
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Peinado I, Moya I, Sáez-Espinosa P, Barrera M, García-Valverde L, Francés R, Torres P, Gómez-Torres MJ. Impact of Maturation and Vitrification Time of Human GV Oocytes on the Metaphase Plate Configuration. Int J Mol Sci 2021; 22:ijms22031125. [PMID: 33498768 PMCID: PMC7865957 DOI: 10.3390/ijms22031125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 12/28/2022] Open
Abstract
The combination of in vitro maturation (IVM) techniques and oocyte vitrification (OV) could increase the number of useful oocytes in different types of patients. IVM and subsequent OV is the most widely used clinical strategy. Would the results improve if we reverse the order of the techniques? Here, we evaluated survival, in vitro maturation, time to extrude the first polar body (PB), and the metaphase plate configuration of human prophase I (GV) oocytes before or after their vitrification. Specific, 195 GV oocytes from 104 patients subjected to controlled ovarian stimulation cycles were included. We stablished three experimental groups: GV oocytes vitrified and IVM (Group GV-Vit), GV oocytes IVM and vitrified at MII stage (Group MII-Vit), and GV oocytes IVM (Group not-Vit). All of them were in vitro matured for a maximum of 48 h and fixed to study the metaphase plate by confocal microscopy. According to our results, the vitrification of immature oocytes and their subsequent maturation presented similar survival, maturation, and metaphase plate conformation rates, but a significantly higher percentage of normal spindle than the standard strategy. Additionally, the extension of IVM time to 48 h did not seem to negatively affect the oocyte metaphase plate configuration.
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Affiliation(s)
- Irene Peinado
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | - Isabel Moya
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | | | - Macarena Barrera
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
| | - Laura García-Valverde
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
| | - Raquel Francés
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Energy and Memory, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 75005 Paris, France
| | - Patricia Torres
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | - María José Gómez-Torres
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
- Cátedra Human Fertility, Universidad de Alicante, 03690 Alicante, Spain
- Correspondence:
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21
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Jo YJ, Kwon J, Jin ZL, Namgoong S, Kwon T, Yoon SB, Lee DH, Kim JS, Kim NH. WHAMM is essential for spindle formation and spindle actin polymerization in maturing mouse oocytes. Cell Cycle 2021; 20:225-235. [PMID: 33397186 DOI: 10.1080/15384101.2020.1867791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
WHAMM (WAS Protein Homolog Associated with Actin, Golgi Membranes, and Microtubules) is involved in Golgi membrane association, microtubule binding, and actin nucleation as a nucleation-promoting factor, which activates the actin-related protein 2/3 complex (the Arp2/3 complex). However, the role of WHAMM in mammalian oocyte maturation is poorly understood. The presence of WHAMM mRNA and protein during all stages of mouse oocyte maturation has been verified. It is mainly co-localized with the actin cage permeating the spindle during mouse oocyte maturation. Through the knockdown of WHAMM, we confirmed that it regulates spindle formation and affects the localization of the microtubule-organizing center (MTOC) during the early stages of spindle formation. Moreover, depletion of WHAMM impaired the formation of the spindle actin and chromosome alignment, which might be the cause of chromosomal aneuploidy and abnormal, asymmetric division. Treatment with brefeldin A (BFA), an inhibitor of vesicle transport from the endoplasmic reticulum (ER) to the Golgi apparatus, induced abnormal and dispersed localization of WHAMM. Taken together, these findings show that WHAMM is an essential component of the actin cytoskeleton machinery and plays a crucial role in oocyte maturation, presumably by controlling the formation of spindles with normal length by activating the formation of the spindle actin via the Arp2/3 complex.
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Affiliation(s)
- Yu-Jin Jo
- Primate Resources Center (PRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB) , Jeongeup-si, Jeollabuk-do, Republic of Korea.,Department of Animal Sciences, Chungbuk National University , Cheong-Ju, Chungcheongbuk-Do, Republic of Korea
| | - Jeongwoo Kwon
- Primate Resources Center (PRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB) , Jeongeup-si, Jeollabuk-do, Republic of Korea.,Department of Animal Sciences, Chungbuk National University , Cheong-Ju, Chungcheongbuk-Do, Republic of Korea
| | - Zhe-Long Jin
- Department of Animal Sciences, Chungbuk National University , Cheong-Ju, Chungcheongbuk-Do, Republic of Korea
| | - Suk Namgoong
- Department of Animal Sciences, Chungbuk National University , Cheong-Ju, Chungcheongbuk-Do, Republic of Korea
| | - Taeho Kwon
- Primate Resources Center (PRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB) , Jeongeup-si, Jeollabuk-do, Republic of Korea
| | - Seung-Bin Yoon
- Primate Resources Center (PRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB) , Jeongeup-si, Jeollabuk-do, Republic of Korea
| | - Dong-Ho Lee
- Primate Resources Center (PRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB) , Jeongeup-si, Jeollabuk-do, Republic of Korea
| | - Ji-Su Kim
- Primate Resources Center (PRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB) , Jeongeup-si, Jeollabuk-do, Republic of Korea
| | - Nam-Hyung Kim
- Department of Animal Sciences, Chungbuk National University , Cheong-Ju, Chungcheongbuk-Do, Republic of Korea
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22
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Papageorgiou K, Mastora E, Zikopoulos A, Grigoriou ME, Georgiou I, Michaelidis TM. Interplay Between mTOR and Hippo Signaling in the Ovary: Clinical Choice Guidance Between Different Gonadotropin Preparations for Better IVF. Front Endocrinol (Lausanne) 2021; 12:702446. [PMID: 34367070 PMCID: PMC8334720 DOI: 10.3389/fendo.2021.702446] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/05/2021] [Indexed: 01/18/2023] Open
Abstract
One of the most widely used types of assisted reproduction technology is the in vitro fertilization (IVF), in which women undergo controlled ovarian stimulation through the administration of the appropriate hormones to produce as many mature follicles, as possible. The most common hormone combination is the co-administration of gonadotropin-releasing hormone (GnRH) analogues with recombinant or urinary-derived follicle-stimulating hormone (FSH). In the last few years, scientists have begun to explore the effect that different gonadotropin preparations have on granulosa cells' maturation and apoptosis, aiming to identify new predictive markers of oocyte quality and successful fertilization. Two major pathways that control the ovarian development, as well as the oocyte-granulosa cell communication and the follicular growth, are the PI3K/Akt/mTOR and the Hippo signaling. The purpose of this article is to briefly review the current knowledge about the effects that the different gonadotropins, used for ovulation induction, may exert in the biology of granulosa cells, focusing on the importance of these two pathways, which are crucial for follicular maturation. We believe that a better understanding of the influence that the various ovarian stimulation protocols have on these critical molecular cascades will be invaluable in choosing the best approach for a given patient, thereby avoiding cancelled cycles, reducing frustration and potential treatment-related complications, and increasing the pregnancy rate. Moreover, individualizing the treatment plan will help clinicians to better coordinate assisted reproductive technology (ART) programs, discuss the specific options with the couples undergoing IVF, and alleviate stress, thus making the IVF experience easier.
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Affiliation(s)
- Kyriaki Papageorgiou
- Department of Biological Applications & Technologies, School of Health Sciences, University of Ioannina, Ioannina, Greece
- Institute of Molecular Biology and Biotechnology, Division of Biomedical Research, Foundation for Research and Technology – Hellas, Ioannina, Greece
| | - Eirini Mastora
- Laboratory of Medical Genetics of Human Reproduction, Medical School, University of Ioannina, Ioannina, Greece
- Medical Genetics and Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Ioannina University Hospital, Ioannina, Greece
| | - Athanasios Zikopoulos
- Laboratory of Medical Genetics of Human Reproduction, Medical School, University of Ioannina, Ioannina, Greece
- Medical Genetics and Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Ioannina University Hospital, Ioannina, Greece
| | - Maria E. Grigoriou
- Department of Molecular Biology & Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Ioannis Georgiou
- Laboratory of Medical Genetics of Human Reproduction, Medical School, University of Ioannina, Ioannina, Greece
- Medical Genetics and Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Ioannina University Hospital, Ioannina, Greece
| | - Theologos M. Michaelidis
- Department of Biological Applications & Technologies, School of Health Sciences, University of Ioannina, Ioannina, Greece
- Institute of Molecular Biology and Biotechnology, Division of Biomedical Research, Foundation for Research and Technology – Hellas, Ioannina, Greece
- *Correspondence: Theologos M. Michaelidis, ;
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23
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Abstract
Arabidopsis stomatal development requires asymmetric cell division, where the nucleus moves to the division site based on cellular polarity cues. A new study reveals the role of distinct cytoskeletal networks, both guided by the polarity factor BASL, for nuclear movement before and after division.
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Ferrer-Vaquer A, Barragán M, Rodríguez A, Vassena R. Altered cytoplasmic maturation in rescued in vitro matured oocytes. Hum Reprod 2020; 34:1095-1105. [PMID: 31119269 DOI: 10.1093/humrep/dez052] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/26/2019] [Accepted: 03/28/2019] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Do culture conditions affect cytoplasmic maturation in denuded immature non-GV oocytes? SUMMARY ANSWER The maturation rate of denuded non-GV oocytes is not affected by culture media, but in vitro maturation seems to alter the mitochondrial membrane potential, endoplasmic reticulum (ER) and actin cytoskeleton compared with in vivo maturation. WHAT IS KNOWN ALREADY In vitro maturation of denuded immature non-GV oocytes benefits cycles with poor in vivo MII oocyte collection, but maturation levels of non-GV oocytes are only scored by polar body extrusion. Since oocyte maturation involves nuclear as well as cytoplasmic maturation for full meiotic competence, further knowledge is needed about cytoplasmic maturation in in vitro culture. STUDY DESIGN, SIZE, DURATION This basic research study was carried out between January 2017 and September 2018. PARTICIPANTS/MATERIALS, SETTING, METHODS A total of 339 denuded immature non-GV oocytes were cultured in SAGE 1-Step (177) or G-2 PLUS (162) for 6-8 h after retrieval, and 72 in vivo matured MII oocytes were used as controls. Cultured immature non-GV oocytes were scored for polar body extrusion and analysed for mitochondrial membrane potential (ΔΨm), ER clusters, cortical granules number and distribution, spindle morphology and actin cytoskeleton organization. The obtained parameter values were compared to in vivo matured MII oocyte parameter values. MAIN RESULTS AND THE ROLE OF CHANCE The maturation rates of oocytes cultured in G-2 PLUS and SAGE 1-Step were similar (65% vs 64.2%; P = 0.91). The differences observed in cortical granule density were not statistically significant. Also spindle morphometric parameters were mostly similar between in vitro and in vivo matured MII oocytes. However, the number of ER clusters, the ΔΨm and the cortical actin thickness showed significant differences between in vivo MII oocytes and denuded immature non-GV oocytes cultured in vitro until meiosis completion. LIMITATIONS, REASONS FOR CAUTION Frozen-thawed oocytes together with fresh oocytes were used as controls. Due to technical limitations (fixation method and fluorochrome overlap), only one or two parameters could be studied per oocyte. Thus, a global view of the maturation status for each individual oocyte could not be obtained. WIDER IMPLICATIONS OF THE FINDINGS Characterization of in vitro matured oocytes at the cellular level will help us to understand the differences observed in the clinical outcomes reported with rescue IVM compared to in vivo MII oocytes and to improve the culture methods applied. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by intramural funding of Clinica Eugin and by the Torres Quevedo Program to A.F.-V. from the Spanish Ministry of Economy and Competitiveness. No competing interests are declared.
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25
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Hegde S, Poojary KK, Rasquinha R, Crasta DN, Gopalan D, Mutalik S, Siddiqui S, Adiga SK, Kalthur G. Epigallocatechin-3-gallate (EGCG) protects the oocytes from methyl parathion-induced cytoplasmic deformities by suppressing oxidative and endoplasmic reticulum stress. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 167:104588. [PMID: 32527428 DOI: 10.1016/j.pestbp.2020.104588] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 03/21/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
Methyl parathion (MP) is a commonly used organophosphorus insecticide in commercial farming. It is well known that MP exposure can affect the function of nervous, respiratory, cardiovascular and reproductive systems. In our previous report we have demonstrated that MP exposure results in poor oocyte maturation and defective embryo development which is mainly mediated through oxidative stress. The present investigation was designed to explore whether using a potent free radical scavenger like Epigallocatechin-3-gallate (EGCG) can help in reducing the detrimental effects of MP on the oocytes. For the study, germinal vesicle (GV) stage oocytes collected from the ovaries of adult Swiss albino mice were subjected to in vitro maturation (IVM) in the presence or absence of MP (100 μg/mL) and/or EGCG (0.25 μM). MP significantly reduced the nuclear maturation rate, and resulted in poor cytoplasmic organization which was evident from the altered distribution pattern of mitochondria, endoplasmic reticulum and abnormal spindle organization. These changes were associated with significant elevation in oxidative stress and expression of ER stress markers such as 78 kDa Glucose regulated protein (GRP78) as well as X-box binding protein-1 (XBP1) in the oocytes. Further, the oocytes exposed to MP had lower activation rate and developmental potential. Supplementation of EGCG during IVM not only improved the nuclear maturation rate but also reduced the cytoplasmic abnormalities. These beneficial effects appear to be due to mitigation of oxidative and ER stress in oocytes. In conclusion, results of our study indicate that EGCG can help in alleviating MP-induced oocyte abnormalities.
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Affiliation(s)
- Shweta Hegde
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Keerthana Karunakar Poojary
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Rhea Rasquinha
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Daphne Norma Crasta
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Divya Gopalan
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Sazada Siddiqui
- Department of Biology, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Satish Kumar Adiga
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Guruprasad Kalthur
- Department of Clinical Embryology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India.
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Hfm1 participates in Golgi-associated spindle assembly and division in mouse oocyte meiosis. Cell Death Dis 2020; 11:490. [PMID: 32606310 PMCID: PMC7327073 DOI: 10.1038/s41419-020-2697-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/15/2020] [Indexed: 12/20/2022]
Abstract
HFM1 (helicase for meiosis 1) is widely recognized as an ATP-dependent DNA helicase and is expressed mainly in germ-line cells. HFM1 is a candidate gene of premature ovarian failure (POF), hence it is also known as POF9. However, the roles of HFM1 in mammalian oocytes remain uncertain. To investigate the functions of HFM1, we established a conditional knockout (cKO) mouse model. Specific knockout of Hfm1 in mouse oocytes from the primordial follicle stage resulted in depletion of ovarian follicular reserve and subfertility of mice. In particular, abnormal spindle, misaligned chromosomes, loss of cortical actin cap, and failing polar body extrusion were readily observed in Hfm1-cKO oocytes. Further studies indicated that in addition to its cytoplasmic distribution, Hfm1 accumulated at the spindle poles, colocalized with the Golgi marker protein, GM130. Generally, GM130 signals overlapped with p-Mapk at the two spindle poles to regulate meiotic spindle assembly and asymmetric division. In this research, centrosome associated proteins, such as GM130 and p-Mapk, detached from the spindle poles in Hfm1-cKO oocytes. In conclusion, our data suggest that Hfm1 participates in Golgi-associated spindle assembly and division in mouse oocyte meiosis. These findings provide clues for pathogenesis of POF.
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27
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Dual functions of Expansin in cell wall extension and compression during cotton fiber development. Biologia (Bratisl) 2020. [DOI: 10.2478/s11756-020-00514-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Wang QC, Wan X, Jia RX, Xu Y, Liu X, Zhang Y, Sun SC. Inhibition of N-WASP affects actin-mediated cytokinesis during porcine oocyte maturation. Theriogenology 2020; 144:132-138. [PMID: 31940504 DOI: 10.1016/j.theriogenology.2020.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/02/2019] [Accepted: 01/05/2020] [Indexed: 02/07/2023]
Abstract
N-WASP is the mammalian ortholog of WASP which is an actin nucleation promoting factor and has been reported to regulate actin nucleation and polymerization for multiple cell activities. However, the expression and functions of N-WASP in porcine oocytes are still unclear. In this study, we showed that N-WASP expressed at all stages during porcine oocyte maturation, and immunofluorescence staining indicated that N-WASP mainly accumulated at the cortex in different stages of meiosis. Inhibition of N-WASP activity by Wiskostatin significantly decreased the rate of first polar body extrusion and disturbed the cell cycle progression of porcine oocytes. Further analysis indicated that cortical actin distribution was interfered by N-WASP inhibition, and this might be through its regulatory roles on the expression and localization of ARP2, a key component of actin nucleator Arp2/3 complex. Moreover, the expression of N-WASP decreased after ROCK activity inhibition, indicating a ROCK-N-WASP-ARP2/3 pathway for actin assembly in porcine oocytes. Taken together, these results suggest that N-WASP is critical for the regulation of actin filaments for cytokinesis during porcine oocyte maturation.
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Affiliation(s)
- Qiao-Chu Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiang Wan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ru-Xia Jia
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yao Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiuhong Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yu Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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29
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Rapani A, Nikiforaki D, Karagkouni D, Sfakianoudis K, Tsioulou P, Grigoriadis S, Maziotis E, Pantou A, Voutsina A, Pantou A, Koutsilieris M, Hatzigeorgiou A, Pantos K, Simopoulou M. Reporting on the Role of miRNAs and Affected Pathways on the Molecular Backbone of Ovarian Insufficiency: A Systematic Review and Critical Analysis Mapping of Future Research. Front Cell Dev Biol 2020; 8:590106. [PMID: 33511114 PMCID: PMC7835544 DOI: 10.3389/fcell.2020.590106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/30/2020] [Indexed: 12/19/2022] Open
Abstract
Ovarian insufficiency is identified as a perplexing entity in the long list of pathologies impairing fertility dynamics. The three distinct classifications of ovarian insufficiency are poor ovarian response, premature ovarian insufficiency/failure, and advanced maternal age, sharing the common denominator of deteriorated ovarian reserve. Despite efforts to define clear lines among the three, the vast heterogeneity and overlap of clinical characteristics renders their diagnosis and management challenging. Lack of a consensus has prompted an empirically based management coupled by uncertainty from the clinicians' perspective. Profiling of patients in the era of precision medicine seems to be the way forward, while the necessity for a novel approach is underlined. Implicating miRNAs in the quest for patient profiling is promising in light of their fundamental role in cellular and gene expression regulation. To this end, the current study sets out to explore and compare the three pathophysiologies-from a molecular point of view-in order to enable profiling of patients in the context of in vitro fertilization treatment and enrich the data required to practice individualized medicine. Following a systematic investigation of literature, data referring to miRNAs were collected for each patient category based on five included studies. miRNA-target pairs were retrieved from the DIANA-TarBase repository and microT-CDS. Gene and miRNA annotations were derived from Ensembl and miRbase. A subsequent gene-set enrichment analysis of miRNA targets was performed for each category separately. A literature review on the most crucial of the detected pathways was performed to reveal their relevance to fertility deterioration. Results supported that all three pathophysiologies share a common ground regarding the affected pathways, naturally attributed to the common denominator of ovarian insufficiency. As evidenced, miRNAs could be employed to explore the fine lines and diverse nature of pathophysiology since they constitute invaluable biomarkers. Interestingly, it is the differentiation through miRNAs and not through the molecular affected pathways that corresponds to the three distinctive categories. Alarming discrepancies among publications were revealed, pertaining to employment of empirical and arbitrary criteria in categorizing the patients. Following bioinformatic analysis, the final step of the current study consisted of a critical analysis of the molecular data sourced, providing a clear and unique insight into the physiological mechanisms involved. It is our intention to contribute to mapping future research dedicated to ovarian insufficiency and to help researchers navigate the overwhelming information published in molecular studies.
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Affiliation(s)
- Anna Rapani
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Assisted Conception Unit, 2nd Department of Obstetrics and Gynecology, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitra Nikiforaki
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitra Karagkouni
- DIANA-Lab, Department of Computer Science and Biomedical Informatics, University of Thessaly, Lamia, Greece
- Hellenic Pasteur Institute, Athens, Greece
| | | | - Petroula Tsioulou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Assisted Conception Unit, 2nd Department of Obstetrics and Gynecology, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Sokratis Grigoriadis
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Assisted Conception Unit, 2nd Department of Obstetrics and Gynecology, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Maziotis
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Assisted Conception Unit, 2nd Department of Obstetrics and Gynecology, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Amelia Pantou
- Centre for Human Reproduction, Genesis Athens Clinic, Athens, Greece
| | | | - Agni Pantou
- Centre for Human Reproduction, Genesis Athens Clinic, Athens, Greece
| | - Michael Koutsilieris
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Artemis Hatzigeorgiou
- DIANA-Lab, Department of Computer Science and Biomedical Informatics, University of Thessaly, Lamia, Greece
- Hellenic Pasteur Institute, Athens, Greece
| | | | - Mara Simopoulou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Assisted Conception Unit, 2nd Department of Obstetrics and Gynecology, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- *Correspondence: Mara Simopoulou,
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Wang YS, Jiao XF, Chen F, Wu D, Ding ZM, Miao YL, Huo LJ. WDR62 is a novel participator in spindle migration and asymmetric cytokinesis during mouse oocyte meiotic maturation. Exp Cell Res 2019; 387:111773. [PMID: 31836472 DOI: 10.1016/j.yexcr.2019.111773] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 12/08/2019] [Accepted: 12/09/2019] [Indexed: 01/08/2023]
Abstract
In female meiosis, oocyte meiotic maturation is a form of asymmetric cell division, producing the first polar body and a large oocyte, in which the asymmetry of oocyte meiotic division depends on spindle migration and positioning, and cortical polarization. In this study, we conclude that WDR62 (WD40-repeat protein 62) plays an important role in asymmetric meiotic division during mouse oocyte maturation. Our initial study demonstrated that WDR62 mainly co-localized with chromosomes during mouse oocyte meiotic maturation. Interference of Wdr62 by siRNA microinjection did not affect germinal vesicle breakdown (GVBD) but compromised the first polar body extrusion (PBE) with the large polar bodies generated, which is coupled with a higher incidence of spindle abnormality and chromosome misalignment. Further analysis concluded that loss of WDR62 blocked asymmetric spindle positioning and actin cap formation, which should be responsible for large polar body extrusion. Moreover, WDR62 decline intervened with the Arp2/3 complex, an upstream regulator for the cortical actin. Besides for p-MAPK, a critical regulator for the asymmetric division of oocyte, WDR62-depleted oocytes showed perturbation only in localization pattern but not expression level. In summary, our study defines WDR62 as an essential cytoskeletal regulator of spindle migration and asymmetric division during mouse oocyte meiotic maturation.
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Affiliation(s)
- Yong-Sheng Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Department of Hubei Province Engineering Research Center in Buffalo Breeding and Products, Wuhan, 430070, Hubei, China
| | - Xiao-Fei Jiao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Department of Hubei Province Engineering Research Center in Buffalo Breeding and Products, Wuhan, 430070, Hubei, China
| | - Fan Chen
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Department of Hubei Province Engineering Research Center in Buffalo Breeding and Products, Wuhan, 430070, Hubei, China
| | - Di Wu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Department of Hubei Province Engineering Research Center in Buffalo Breeding and Products, Wuhan, 430070, Hubei, China
| | - Zhi-Ming Ding
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Department of Hubei Province Engineering Research Center in Buffalo Breeding and Products, Wuhan, 430070, Hubei, China
| | - Yi-Liang Miao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Li-Jun Huo
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Department of Hubei Province Engineering Research Center in Buffalo Breeding and Products, Wuhan, 430070, Hubei, China.
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31
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Zhang Y, Wang HH, Wan X, Xu Y, Pan MH, Sun SC. Inhibition of protein kinase D disrupts spindle formation and actin assembly during porcine oocyte maturation. Aging (Albany NY) 2019; 10:3736-3744. [PMID: 30555056 PMCID: PMC6326681 DOI: 10.18632/aging.101667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 11/15/2018] [Indexed: 12/17/2022]
Abstract
Protein kinase D (PKD) subfamily which includes PKD1, PKD2 and PKD3 is a novel family of serine/threonine kinases. PKD has been widely implicated in the regulation of multiple physiological effects including immune responses, apoptosis and cell proliferation. However, the roles of PKD in oocytes have not been fully clarified. In this study we investigated the regulatory functions of PKD during porcine oocyte maturation. Our results indicated that PKD expressed in porcine oocytes and the inhibition of PKD family activity led to the failure of meiosis resumption and the first polar body extrusion. Further analysis indicated that the spindle assembly and chromosome alignment were disrupted after PKD family inhibition, and this might be through its regulatory role on MAPK phosphorylation. We also found that PKD phosphorylated cofilin for actin assembly, which further affected cortical actin distribution, indicating the roles of PKD family on cytoskeleton. In addition, a decreased expression of PKD in postovulatory aging porcine oocytes was observed, which might connect PKD with cytoskeleton defects in aged oocytes. Taken together, these results suggest that PKD possesses important functions in porcine oocyte maturation by regulating spindle organization and actin assembly.
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Affiliation(s)
- Yu Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Hong-Hui Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiang Wan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yao Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Meng-Hao Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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32
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Roeles J, Tsiavaliaris G. Actin-microtubule interplay coordinates spindle assembly in human oocytes. Nat Commun 2019; 10:4651. [PMID: 31604948 PMCID: PMC6789129 DOI: 10.1038/s41467-019-12674-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 09/18/2019] [Indexed: 12/18/2022] Open
Abstract
Mammalian oocytes assemble a bipolar acentriolar microtubule spindle to segregate chromosomes during asymmetric division. There is increasing evidence that actin in the spindle interior not only participates in spindle migration and positioning but also protects oocytes from chromosome segregation errors leading to aneuploidy. Here we show that actin is an integral component of the meiotic machinery that closely interacts with microtubules during all major events of human oocyte maturation from the time point of spindle assembly till polar body extrusion and metaphase arrest. With the aid of drugs selectively affecting cytoskeleton dynamics and transiently disturbing the integrity of the two cytoskeleton systems, we identify interdependent structural rearrangements indicative of a close communication between actin and microtubules as fundamental feature of human oocytes. Our data support a model of actin-microtubule interplay that is essential for bipolar spindle assembly and correct partitioning of the nuclear genome in human oocyte meiosis.
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Affiliation(s)
- Johannes Roeles
- Cellular Biophysics, Institute for Biophysical Chemistry, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - Georgios Tsiavaliaris
- Cellular Biophysics, Institute for Biophysical Chemistry, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
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33
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Cheng Y, Zhang J, Wu T, Jiang X, Jia H, Qing S, An Q, Zhang Y, Su J. Reproductive toxicity of acute Cd exposure in mouse: Resulting in oocyte defects and decreased female fertility. Toxicol Appl Pharmacol 2019; 379:114684. [PMID: 31325558 DOI: 10.1016/j.taap.2019.114684] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/13/2019] [Accepted: 07/16/2019] [Indexed: 11/16/2022]
Abstract
Cadmium (Cd), a known metal contaminant, is widespreadly used in industry, thereby human health is severely affected through the way of occupational and environmental exposure. The adverse effects of the exposure to Cd on the female reproductive system, especially oocyte maturation and fertility have not been clearly defined. In this study, we found the arrested development of ovaries and uteri after Cd exposure and determined oocyte quality via assessing the key regulators during meiotic maturation and fertilization. We found that Cd exposure impeded the mouse oocyte meiotic progression by disrupting the normal spindle assembly, chromosome alignment and actin cap formation. Besides, exposure to Cd induced oxidative stress with the increased reactive oxygen species and apoptosis levels, leading to abnormal mitochondrial distribution, insufficient energy supply, and DNA damage, which ultimately led to oocyte quality deterioration. We also analyzed the effects of cadmium on epigenetic modifications, and the levels of 5mC, H3K9me3 and H3K9ac decreased after acute exposure to cadmium. Further experiments showed that the litter size in Cd-exposed female mice reduced, thereby indicating increased reproductive Cd toxicity. In conclusion, Cd exposure impairs oocyte maturation and fertilization ability induced by oxidative stress, early apoptosis and epigenetic modifications, which lead to the decrease of female fertility.
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Affiliation(s)
- Yuyao Cheng
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Jun Zhang
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, Qinghai Province 810003, PR China
| | - Teng Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Xianlei Jiang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Huiqun Jia
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Suzhu Qing
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Quanli An
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
| | - Jianmin Su
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
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34
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Zhu JQ, Liu Y, Zhang JH, Liu YF, Cao JQ, Huang ZT, Yuan Y, Bian JC, Liu ZP. Cadmium Exposure of Female Mice Impairs the Meiotic Maturation of Oocytes and Subsequent Embryonic Development. Toxicol Sci 2019; 164:289-299. [PMID: 29684212 DOI: 10.1093/toxsci/kfy089] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Cadmium is one major pollutant that is highly toxic to animals and humans. The mechanism of cadmium toxicity on the female reproductive system, particularly oocyte maturation and fertility, remains to be clarified. In this study, we used a mouse model to investigate the effects of cadmium in the drinking water on the meiotic maturation of oocytes and subsequent embryonic development, and the underlying mechanisms associated with the impairment of oocyte maturation such as mitochondrial distribution and histone modifications. Our results show that cadmium exposure decreased the number of ovulated oocytes and impaired oocyte meiotic maturation rate both in vivo and in vitro. The embryonic development after fertilization was also impaired even when the potential hazards of cadmium on the spermatozoa or the genital tract have been excluded by fertilization and embryonic development in culture. Cadmium exposure disrupted meiotic spindle morphology and actin filament, which are responsible for successful chromosome segregation and the polar body extrusion during oocyte maturation and fertilization. ATP contents, which are required for proper meiotic spindle assembly in the oocyte, were decreased, consistent with altered mitochondrial distribution after cadmium exposure. Finally, cadmium exposure affected the levels of H3K9me2 and H4K12ac in the oocyte, which are closely associated with the acquisition of oocyte developmental competence and subsequent embryonic development. In conclusion, cadmium exposure in female mice impaired meiotic maturation of oocytes and subsequent embryonic development by affecting the cytoskeletal organization, mitochondrial function, and histone modifications.
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Affiliation(s)
- Jia-Qiao Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
| | - Yang Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
| | - Jiang-Hong Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
| | - Yan-Fang Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
| | - Jiang-Qin Cao
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
| | - Zhu-Tao Huang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
| | - Yan Yuan
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Jian-Chun Bian
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
| | - Zong-Ping Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
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35
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Lin YH, Zhuang SX, Wang YL, Lin S, Hong ZW, Liu Y, Xu L, Li FP, Xu BH, Chen MH, He SW, Liao BQ, Fu XP, Jiang ZQ, Wang HL. The effects of graphene quantum dots on the maturation of mouse oocytes and development of offspring. J Cell Physiol 2019; 234:13820-13831. [PMID: 30644094 DOI: 10.1002/jcp.28062] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 12/17/2018] [Indexed: 01/22/2023]
Abstract
Recently, graphene nanomaterials have attracted tremendous attention and have been utilized in various fields because of their excellent mechanical, thermal, chemical, optical properties, and good biocompatibility, especially in biomedical aspects. However, there is a concern that the unique characteristics of nanomaterials may have undesirable effects. Therefore, in this study, we sought to systematically investigate the effects of graphene quantum dots (GQDs) on the maturation of mouse oocytes and development of the offspring via in vitro and in vivo studies. In vitro, we found that the first polar body extrusion rate in the high dosage exposure groups (1.0-1.5 mg/ml) 2 decreased significantly and the failure of spindle migration and actin cap formation after GQDs exposure was observed. The underlying mechanisms might be associated with reactive oxygen species accumulation and DNA damage. Moreover, transmission electron microscope studies showed that GQDs may have been internalized into oocytes, tending to accumulate in the nucleus and severely affecting mitochondrial morphology, which included swollen and vacuolated mitochondria accompanied by cristae alteration with a lower amount of dense mitochondrial matrix. In vivo, when pregnant mice were exposed to GQDs at 8.5 days of gestation (GD, 8.5), we found that high dosage of GQD exposure (30 mg/kg) significantly affected mean fetal length; however, all the second generation of female mice grew up normal, attained sexual maturity, and gave birth to a healthy offspring after mating with a healthy male mouse. The results presented in this study are important for the future investigation of GQDs for the biomedical applications.
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Affiliation(s)
- Yan-Hong Lin
- Department of Gynaecology and Obstetrics, The Graduate School of Fujian Medical University, Fujian Medical University, Fuzhou, Fujian, China.,Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China.,Department of Gynaecology, The Affiliated Hospital of Putian University, Putian University, Putian, Fujian, China
| | - Shu-Xin Zhuang
- Key Laboratory of Functional Materials and Applications of Fujian Province, School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, Fujian, China
| | - Ya-Long Wang
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Sheng Lin
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Zi-Wei Hong
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Yu Liu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Lin Xu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Fei-Ping Li
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Bai-Hui Xu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Ming-Huang Chen
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Shu-Wen He
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Bao-Qiong Liao
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Xian-Pei Fu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
| | - Zhong-Qing Jiang
- Department of Obstetrics and Gynaecology, Affiliated Fuzhou First Hospital of Fujian Medical University, Fujian Medical University, Fuzhou, Fujian, China
| | - Hai-Long Wang
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen University, Xiamen, Fujian, China
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36
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Abstract
Mammalian target of rapamycin (mTOR) is a conserved serine/threonine kinase of the phosphatidylinositol kinase-related kinase family that regulates cell growth, metabolism, and autophagy. Extensive research has linked mTOR to several human diseases including cancer, neurodegenerative disorders, and aging. In this review, recent publications regarding the mechanisms underlying the role of mTOR in female reproduction under physiological and pathological conditions are summarized. Moreover, we assess whether strategies to improve or suppress mTOR expression could have therapeutic potential for reproductive diseases like premature ovarian failure, polycystic ovarian syndrome, and endometriosis.
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37
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Pan ZN, Lu Y, Tang F, Pan MH, Wan X, Lan M, Zhang Y, Sun SC. RAB8A GTPase regulates spindle migration and Golgi apparatus distribution via ROCK-mediated actin assembly in mouse oocyte meiosis†. Biol Reprod 2018; 100:711-720. [DOI: 10.1093/biolre/ioy217] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/03/2018] [Accepted: 09/30/2018] [Indexed: 12/13/2022] Open
Affiliation(s)
- Zhen-Nan Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yujie Lu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Feng Tang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Meng-Hao Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiang Wan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Mei Lan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yu Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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38
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Duan X, Sun SC. Actin cytoskeleton dynamics in mammalian oocyte meiosis†. Biol Reprod 2018; 100:15-24. [DOI: 10.1093/biolre/ioy163] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 07/11/2018] [Indexed: 12/12/2022] Open
Affiliation(s)
- Xing Duan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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39
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Animal Female Meiosis: The Challenges of Eliminating Centrosomes. Cells 2018; 7:cells7070073. [PMID: 29996518 PMCID: PMC6071224 DOI: 10.3390/cells7070073] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/03/2018] [Accepted: 07/03/2018] [Indexed: 01/02/2023] Open
Abstract
Sexual reproduction requires the generation of gametes, which are highly specialised for fertilisation. Female reproductive cells, oocytes, grow up to large sizes when they accumulate energy stocks and store proteins as well as mRNAs to enable rapid cell divisions after fertilisation. At the same time, metazoan oocytes eliminate their centrosomes, i.e., major microtubule-organizing centres (MTOCs), during or right after the long growth phases. Centrosome elimination poses two key questions: first, how can the centrosome be re-established after fertilisation? In general, metazoan oocytes exploit sperm components, i.e., the basal body of the sperm flagellum, as a platform to reinitiate centrosome production. Second, how do most metazoan oocytes manage to build up meiotic spindles without centrosomes? Oocytes have evolved mechanisms to assemble bipolar spindles solely around their chromosomes without the guidance of pre-formed MTOCs. Female animal meiosis involves microtubule nucleation and organisation into bipolar microtubule arrays in regulated self-assembly under the control of the Ran system and nuclear transport receptors. This review summarises our current understanding of the molecular mechanism underlying self-assembly of meiotic spindles, its spatio-temporal regulation, and the key players governing this process in animal oocytes.
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40
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Zhang Y, Yu JC, Jiang T, Fernandez-Gonzalez R, Harris TJC. Collision of Expanding Actin Caps with Actomyosin Borders for Cortical Bending and Mitotic Rounding in a Syncytium. Dev Cell 2018; 45:551-564.e4. [PMID: 29804877 DOI: 10.1016/j.devcel.2018.04.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/30/2018] [Accepted: 04/25/2018] [Indexed: 10/24/2022]
Abstract
The early Drosophila embryo is a large syncytial cell that compartmentalizes mitotic spindles with furrows. Before furrow ingression, an Arp2/3 actin cap forms above each nucleus and is encircled by actomyosin. We investigated how these networks transform a flat cortex into a honeycomb-like compartmental array. The growing caps circularize and ingress upon meeting their actomyosin borders, which become the furrow base. Genetic perturbations indicate that the caps physically displace their borders and, reciprocally, that the borders resist and circularize their caps. These interactions create an actomyosin cortex arrayed with circular caps. The Rac-GEF Sponge, Rac-GTP, Arp3, and actin coat the caps as a growing material that can drive cortical bending for initial furrow ingression. Additionally, laser ablations indicate that actomyosin contraction squeezes the cytoplasm, producing counterforces that swell the caps. Thus, Arp2/3 caps form clearances of the actomyosin cortex and control buckling and swelling of these clearances for metaphase compartmentalization.
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Affiliation(s)
- Yixie Zhang
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON M5S 3G5, Canada
| | - Jessica C Yu
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
| | - Tao Jiang
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON M5S 3G5, Canada
| | - Rodrigo Fernandez-Gonzalez
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON M5S 3G5, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada; Ted Rogers Centre for Heart Research, University of Toronto, Toronto, ON M5G 1M1, Canada; Developmental and Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | - Tony J C Harris
- Department of Cell & Systems Biology, University of Toronto, Toronto, ON M5S 3G5, Canada.
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41
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Inoue D, Wittbrodt J, Gruss OJ. Loss and Rebirth of the Animal Microtubule Organizing Center: How Maternal Expression of Centrosomal Proteins Cooperates with the Sperm Centriole in Zygotic Centrosome Reformation. Bioessays 2018. [PMID: 29522658 DOI: 10.1002/bies.201700135] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Centrosomes are the main microtubule organizing centers in animal cells. In particular during embryogenesis, they ensure faithful spindle formation and proper cell divisions. As metazoan centrosomes are eliminated during oogenesis, they have to be reassembled upon fertilization. Most metazoans use the sperm centrioles as templates for new centrosome biogenesis while the egg's cytoplasm re-prepares all components for on-going centrosome duplication in rapidly dividing embryonic cells. We discuss our knowledge and the experimental challenges to analyze zygotic centrosome reformation, which requires genetic experiments to enable scrutinizing respective male and female contributions. Male and female knockout animals and mRNA injection to mimic maternal expression of centrosomal proteins could point a way to the systematic molecular dissection of the process. The most recent data suggest that timely expression of centrosome components in oocytes is the key to zygotic centrosome reformation that uses male sperm as coordinators for de novo centrosome production.
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Affiliation(s)
- Daigo Inoue
- Dr. D. Inoue, Prof. Dr. J. Wittbrodt, Centre of Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 230, 69120 Heidelberg, Germany
| | - Joachim Wittbrodt
- Dr. D. Inoue, Prof. Dr. J. Wittbrodt, Centre of Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 230, 69120 Heidelberg, Germany
| | - Oliver J Gruss
- Prof. Dr. O. J. Gruss, Institute of Genetics, University of Bonn, Karlrobert-Kreiten-Str.13, 53115 Bonn, Germany
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42
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Xie B, Zhang L, Zhao H, Bai Q, Fan Y, Zhu X, Yu Y, Li R, Liang X, Sun QY, Li M, Qiao J. Poly(ADP-ribose) mediates asymmetric division of mouse oocyte. Cell Res 2018; 28:462-475. [PMID: 29463901 DOI: 10.1038/s41422-018-0009-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 10/30/2017] [Accepted: 01/05/2018] [Indexed: 11/09/2022] Open
Abstract
Before fertilization, mammalian oocyte undergoes an asymmetric division which depends on eccentric positioning of the spindle at the oocyte cortex to form a polar body and an egg. Since the centriole is absent and, as a result, the polar array microtubules are not fully developed in oocytes, microtubules have seldom been considered as required for eccentric positioning of the spindle, while actin-related forces have instead been proposed to be primarily responsible for this process. However, the existing models are largely conflicting and the underlying mechanism of asymmetric division is still elusive. Here we show that poly(ADP-ribose) (PAR) is enriched at mouse oocyte cortical area throughout meiosis. Specific removal of cortical PAR results in an ectopic spindle and a failure of asymmetric division. During spindle migration, when the spindle deviates from the center of oocyte by a pushing force of cytoplasmic actin, the short polar array microtubules emanating from the juxtacortical spindle pole extend to the cortex and penetrate into cortical PAR, docking and stabilizing the spindle at the cortex which facilitates the asymmetric division. This process depends on the affinity between PAR and microtubule-associated proteins such as Spindly, which contributes to a physical link for cortical PAR and the spindle. Notably, fusing a PAR-binding domain to end-binding protein 3, a plus-end tracking protein at the polar array microtubules, restores the asymmetric division of oocytes with Spindly knockdown. Thus, our work demonstrates a comprehensive mechanism for oocyte spindle positioning and asymmetric division.
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Affiliation(s)
- Bingteng Xie
- Center for Reproductive Medicine, Peking University Third Hospital, 100191, Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education, 100191, Beijing, China
| | - Lu Zhang
- Center for Reproductive Medicine, Peking University Third Hospital, 100191, Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education, 100191, Beijing, China
| | - Huiling Zhao
- School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Qingyun Bai
- School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Yong Fan
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, 510150, Guangzhou, China
| | - Xiaohui Zhu
- Center for Reproductive Medicine, Peking University Third Hospital, 100191, Beijing, China
| | - Yang Yu
- Center for Reproductive Medicine, Peking University Third Hospital, 100191, Beijing, China
| | - Rong Li
- Center for Reproductive Medicine, Peking University Third Hospital, 100191, Beijing, China
| | - Xin Liang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, 100084, Beijing, China
| | - Qing-Yuan Sun
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China
| | - Mo Li
- Center for Reproductive Medicine, Peking University Third Hospital, 100191, Beijing, China. .,Key Laboratory of Assisted Reproduction, Ministry of Education, 100191, Beijing, China.
| | - Jie Qiao
- Center for Reproductive Medicine, Peking University Third Hospital, 100191, Beijing, China. .,Key Laboratory of Assisted Reproduction, Ministry of Education, 100191, Beijing, China.
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Vertii A, Kaufman PD, Hehnly H, Doxsey S. New dimensions of asymmetric division in vertebrates. Cytoskeleton (Hoboken) 2018; 75:87-102. [DOI: 10.1002/cm.21434] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 12/20/2017] [Accepted: 01/16/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Anastassiia Vertii
- Department of MolecularCell and Cancer Biology University of Massachusetts Medical SchoolWorcester Massachusetts
| | - Paul D. Kaufman
- Department of MolecularCell and Cancer Biology University of Massachusetts Medical SchoolWorcester Massachusetts
| | - Heidi Hehnly
- Department of Cell and Developmental BiologySUNY Upstate Medical UniversitySyracuse New York13210
| | - Stephen Doxsey
- Program in Molecular Medicine University of Massachusetts Medical SchoolWorcester Massachusetts
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Vesicular transport protein Arf6 modulates cytoskeleton dynamics for polar body extrusion in mouse oocyte meiosis. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1865:455-462. [DOI: 10.1016/j.bbamcr.2017.11.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 10/30/2017] [Accepted: 11/27/2017] [Indexed: 01/08/2023]
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45
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Lee SR, Jo YJ, Namgoong S, Kim NH. Anillin controls cleavage furrow formation in the course of asymmetric division during mouse oocyte maturation. Mol Reprod Dev 2018; 83:792-801. [PMID: 27508507 DOI: 10.1002/mrd.22688] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 08/08/2016] [Indexed: 12/31/2022]
Abstract
Anillin is a scaffold protein that recruits several proteins involved in cleavage furrow formation during cytokinesis. The role of anilllin in symmetric cell divisions in somatic cells has been intensively studied, yet its involvement in cleavage furrow formation is still elusive. In this study, we investigated the role of anillin in mammalian oocyte maturation and cytokinesis. We found that anillin is localized around the nucleus during the oocyte germinal-vesicle stage, and spreads to the cytoplasm after germinal vesicle breakdown. Thereafter, anillin concentrates at the site of the cleavage furrow from anaphase I to metaphase II. Disruption of anillin activity by microinjecting oocytes with specific siRNAs resulted in a failure of polar body extrusion and asymmetric division, and caused abnormal chromosome segregation during anaphase I. Furthermore, pharmacological inhibition of myosin light chain using Y-27632 or ML-7 resulted in decreased anillin expression. Collectively, our data suggest that anillin is an essential intracellular component that maintains the integrity of asymmetric division in mouse oocytes. Mol. Reprod. Dev. 83: 792-801, 2016 © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- So-Rim Lee
- Department of Animal Sciences, Chungbuk National University, Cheong-ju, South Korea
| | - Yu-Jin Jo
- Department of Animal Sciences, Chungbuk National University, Cheong-ju, South Korea
| | - Suk Namgoong
- Department of Animal Sciences, Chungbuk National University, Cheong-ju, South Korea.
| | - Nam-Hyung Kim
- Department of Animal Sciences, Chungbuk National University, Cheong-ju, South Korea.
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46
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Jin ZL, Jo YJ, Namgoong S, Kim NH. CAP1 mediated actin cycling via ADF/cofilin is essential for asymmetric division in mouse oocytes. J Cell Sci 2018; 131:jcs.222356. [DOI: 10.1242/jcs.222356] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/23/2018] [Indexed: 11/20/2022] Open
Abstract
Dynamic reorganization of the actin cytoskeleton is fundamental to a number of cellular events, and various actin-regulatory proteins modulate actin polymerization and depolymerization. Cyclase-associated proteins (CAPs), highly conserved actin monomer-binding proteins, have been known to promote actin disassembly by enhancing the actin-severing activity of ADF/cofilin. In this study, we found that CAP1 regulated actin remodeling during mouse oocyte maturation. Efficient actin disassembly during oocyte maturation is essential for asymmetric division and cytokinesis. CAP1 knockdown impaired meiotic spindle migration and asymmetric division, and it resulted in an accumulation of excessive actin filaments near the spindles. In contrast, CAP1 overexpression reduced actin mesh levels. CAP1 knockdown also rescued the decrease in cofilin overexpression-mediated actin levels, and simultaneous expression of human CAP1 (hCAP1) and cofilin synergistically decreased cytoplasmic actin levels. Overexpression of hCAP1 decreased the amount of phosphorylated cofilin, indicating that CAP1 facilitated actin depolymerization via interaction with ADF/cofilin during mouse oocyte maturation. Taken together, our results provide evidence of the importance of dynamic actin recycling by CAP1 and cofilin in the asymmetric division of mouse female gametes.
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Affiliation(s)
- Zhe-Long Jin
- Department of Animal Sciences, Chungbuk National University, Cheongju 361-763, Korea
| | - Yu-Jin Jo
- Department of Animal Sciences, Chungbuk National University, Cheongju 361-763, Korea
| | - Suk Namgoong
- Department of Animal Sciences, Chungbuk National University, Cheongju 361-763, Korea
| | - Nam-Hyung Kim
- Department of Animal Sciences, Chungbuk National University, Cheongju 361-763, Korea
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He SW, Xu BH, Liu Y, Wang YL, Chen MH, Xu L, Liao BQ, Lui R, Li FP, Lin YH, Fu XP, Fu BB, Hong ZW, Liu YX, Qi ZQ, Wang HL. SKAP2 regulates Arp2/3 complex for actin-mediated asymmetric cytokinesis by interacting with WAVE2 in mouse oocytes. Cell Cycle 2017; 16:2272-2281. [PMID: 28933599 PMCID: PMC5788478 DOI: 10.1080/15384101.2017.1380126] [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] [Indexed: 12/02/2022] Open
Abstract
SKAP2 (Src kinase-associated phosphoprotein 2), a substrate of Src family kinases, has been suggested to be involved in actin-mediated cellular processes. However, little is known about its role in mouse oocyte maturation. In this study, we thus investigated the expression, localization, and functions of SKAP2 during mouse oocyte asymmetric division. SKAP2 protein expression was detected at all developmental stages in mouse oocytes. Immunofluorescent staining showed that SKAP2 was mainly distributed at the cortex of the oocytes during maturation. Treatment with cytochalasin B in oocytes confirmed that SKAP2 was co-localized with actin. Depletion of SKAP2 by injection with specific short interfering RNA caused failure of spindle migration, polar body extrusion, and cytokinesis defects. Meanwhile, the staining of actin filaments at the oocyte membrane and in the cytoplasm was significantly reduced after these treatments. SKAP2 depletion also disrupted actin cap and cortical granule-free domain formation, and arrested a large proportion of oocytes at the telophase stage. Moreover, Arp2/3 complex and WAVE2 expression was decreased after the depletion of SKAP2 activity. Our results indicate that SKAP2 regulates the Arp2/3 complex and is essential for actin-mediated asymmetric cytokinesis by interacting with WAVE2 in mouse oocytes.
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Affiliation(s)
- Shu-Wen He
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Bai-Hui Xu
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,g Department of Workshop 25, Shangdong new time Pharmaceutical Company Limited , Shangdong , China
| | - Yu Liu
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Ya-Long Wang
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Ming-Huang Chen
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China.,c Department of Gynaecology and Obstetrics , Zhongshan Hospital , Xiamen, Fujian , China
| | - Lin Xu
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Bao-Qiong Liao
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Rui Lui
- c Department of Gynaecology and Obstetrics , Zhongshan Hospital , Xiamen, Fujian , China.,d Department of Gynaecology and Obstetrics , Zhongxin Hospital , Qingdao, Shangdong , China
| | - Fei-Ping Li
- b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China.,f Department of Life Science, Biological College, Southwest Forestry University , Kunming , China
| | - Yan-Hong Lin
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,e Department of Gynaecology and Obstetrics , the First Clinical Medical College, Fujian Medical University , Fuzhou , China
| | - Xian-Pei Fu
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Bin-Bin Fu
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Zi-Wei Hong
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Yu-Xin Liu
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Zhong-Quan Qi
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
| | - Hai-Long Wang
- a Organ Transplantation Institute, Medical College, Xiamen University , Xiamen, Fujian , China.,b Fujian Key Laboratory of Organ and Tissue Regeneration , Xiamen, Fujian , China
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48
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Pan MH, Wang F, Lu Y, Tang F, Duan X, Zhang Y, Xiong B, Sun SC. FHOD1 regulates cytoplasmic actin-based spindle migration for mouse oocyte asymmetric cell division. J Cell Physiol 2017; 233:2270-2278. [PMID: 28708292 DOI: 10.1002/jcp.26099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 07/13/2017] [Indexed: 12/25/2022]
Abstract
FHOD1 is a member of Diaphanous-related formins (DRFs) which belongs to the Formin family. Previous studies have shown that the DFRs might affect several cellular functions such as morphogenesis, cytokinesis, cell polarity, and embryonic differentiation. However, there is no evidence showing the functions of FHOD1 during oocyte meiosis. This study is aimed at exploring the roles of FHOD1 during the mammalian oocyte maturation. Immunofluorescent staining showed that FHOD1 was restricted to the nucleus in germinal vesicle (GV) stage of the oocytes, after the GV breakdown FHOD1 was primarily located at two poles of the spindle at both metaphases I and II stages. Knockdown of FHOD1 by siRNA injection did not affect polar body extrusion but generated the large polar bodies. In addition, we observed the spindle migration failure in metaphase I oocytes, with a large number of meiotic spindles anchoring in the center of cytoplasm. The expression level of cytoplasmic actin but not cortex actin was significantly reduced, indicating that FHOD1 regulates cytoplasmic actin distribution for the spindle movement. Furthermore, we found that the disruption of ROCK (the Rho-dependent protein kinase) with inhibitor Y-27632 caused the decreased FHOD1 protein expression. Therefore, our data indicate that FHOD1 is regulated by ROCK for cytoplasm actin assembly and spindle migration during mouse oocyte meiosis.
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Affiliation(s)
- Meng-Hao Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Fei Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yujie Lu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Feng Tang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xing Duan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yu Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Bo Xiong
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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49
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Zhou D, Choi YJ, Kim JH. Histone deacetylase 6 (HDAC6) is an essential factor for oocyte maturation and asymmetric division in mice. Sci Rep 2017; 7:8131. [PMID: 28811599 PMCID: PMC5557833 DOI: 10.1038/s41598-017-08650-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/11/2017] [Indexed: 12/23/2022] Open
Abstract
Tubastatin A (Tub-A), a highly selective histone deacetylase 6 (HDAC6) inhibitor, has been widely used as a cytotoxic anticancer agent, or for the treatment of patients with asthma. However, the potential toxicity of Tub-A on oocyte maturation and asymmetric division is still unclear. Therefore, the present study was designed to examine the effect and potential regulatory role of Tub-A on the meiotic maturation of oocytes. We observed that Tub-A treatment induced an increased level of the acetylation of α-tubulin, and a failure of spindle migration and actin cap formation. Based on the spindle structure, most Tub-A treated oocytes were arrested in an MI-like or a GVBD-like stage and exhibited decondensed chromosomes in a dose dependent manner. Moreover, Tub-A treatment decreased the protein expression of mTOR, a factor responsible for spindle formation, and the expression of mDia1, an inhibitor of actin assembly, in an HDAC6 expression-dependent manner. Importantly, following Tub-A supplementation, most oocytes failed to extrude the first polar body, which indicates that these defects are closely linked to abnormal oocyte maturation. Taken together, our data demonstrates that HDAC6 is one of the essential factors for oocyte maturation and asymmetric division via the HDAC6/mTOR or mDia1 pathway in mice.
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Affiliation(s)
- Dongjie Zhou
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
| | - Yun-Jung Choi
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, 143-701, Republic of Korea
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Humanized Pig Research Center (SRC), Konkuk University, Seoul, 143-701, Republic of Korea.
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50
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Carvalhal S, Stevense M, Koehler K, Naumann R, Huebner A, Jessberger R, Griffis ER. ALADIN is required for the production of fertile mouse oocytes. Mol Biol Cell 2017; 28:2470-2478. [PMID: 28768824 PMCID: PMC5597320 DOI: 10.1091/mbc.e16-03-0158] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 06/27/2017] [Accepted: 07/27/2017] [Indexed: 11/11/2022] Open
Abstract
The nucleoporin ALADIN is required for multiple stages of oocyte maturation and for supporting embryonic divisions postfertilization. Asymmetric cell divisions depend on the precise placement of the spindle apparatus. In mammalian oocytes, spindles assemble close to the cell’s center, but chromosome segregation takes place at the cell periphery where half of the chromosomes are expelled into small, nondeveloping polar bodies at anaphase. By dividing so asymmetrically, most of the cytoplasmic content within the oocyte is preserved, which is critical for successful fertilization and early development. Recently we determined that the nucleoporin ALADIN participates in spindle assembly in somatic cells, and we have also shown that female mice homozygously null for ALADIN are sterile. In this study we show that this protein is involved in specific meiotic stages, including meiotic resumption, spindle assembly, and spindle positioning. In the absence of ALADIN, polar body extrusion is compromised due to problems in spindle orientation and anchoring at the first meiotic anaphase. ALADIN null oocytes that mature far enough to be fertilized in vitro are unable to support embryonic development beyond the two-cell stage. Overall, we find that ALADIN is critical for oocyte maturation and appears to be far more essential for this process than for somatic cell divisions.
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Affiliation(s)
- Sara Carvalhal
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, United Kingdom
| | - Michelle Stevense
- Institute of Physiological Chemistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Katrin Koehler
- Department of Paediatrics, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Ronald Naumann
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Angela Huebner
- Department of Paediatrics, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Rolf Jessberger
- Institute of Physiological Chemistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Eric R Griffis
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, United Kingdom
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