1
|
Guo Y, Sun CK, Tang L, Tan MS. Microglia PTK2B/Pyk2 in the Pathogenesis of Alzheimer's Disease. Curr Alzheimer Res 2023; 20:692-704. [PMID: 38321895 DOI: 10.2174/0115672050299004240129051655] [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: 12/16/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/08/2024]
Abstract
Alzheimer's disease (AD) is a highly hereditary disease with complex genetic susceptibility factors. Extensive genome-wide association studies have established a distinct susceptibility link between the protein tyrosine kinase 2β (PTK2B) gene and late-onset Alzheimer's disease (LOAD), but the specific pathogenic mechanisms remain incompletely understood. PTK2B is known to be expressed in neurons, and recent research has revealed its more important significance in microglia. Elucidating the role of PTK2B high expression in microglia in AD's progression is crucial for uncovering novel pathogenic mechanisms of the disease. Our review of existing studies suggests a close relationship between PTK2B/proline-rich tyrosine kinase 2 (Pyk2) and tau pathology, and this process might be β-amyloid (Aβ) dependence. Pyk2 is hypothesized as a pivotal target linking Aβ and tau pathologies. Concurrently, Aβ-activated Pyk2 participates in the regulation of microglial activation and its proinflammatory functions. Consequently, it is reasonable to presume that Pyk2 in microglia contributes to amyloid-induced tau pathology in AD via a neuroinflammatory pathway. Furthermore, many things remain unclear, such as identifying the specific pathways that lead to the release of downstream inflammatory factors due to Pyk2 phosphorylation and whether all types of inflammatory factors can activate neuronal kinase pathways. Additionally, further in vivo experiments are essential to validate this hypothesized pathway. Considering PTK2B/Pyk2's potential role in AD pathogenesis, targeting this pathway may offer innovative and promising therapeutic approaches for AD.
Collapse
Affiliation(s)
- Yun Guo
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Cheng-Kun Sun
- Department of Neurology, Qingdao Municipal Hospital, Dalian Medical University, Qingdao, China
| | - Lian Tang
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Meng-Shan Tan
- School of Clinical Medicine, Weifang Medical University, Weifang, China
- Department of Neurology, Qingdao Municipal Hospital, Dalian Medical University, Qingdao, China
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
- Department of Neurology, Qingdao Municipal Hospital, University of Health and Rehabilitation Sciences, Qingdao, China
| |
Collapse
|
2
|
Huang Y, Yuan C, Zhao Y, Li C, Cao M, Li H, Zhao Z, Sun A, Basang W, Zhu Y, Chen L, He F, Huan C, Zhang B, Iqbal T, Wei Y, Fan W, Yi K, Zhou X. Identification and Regulatory Network Analysis of Genes Related to Reproductive Performance in the Hypothalamus and Pituitary of Angus Cattle. Genes (Basel) 2022; 13:genes13060965. [PMID: 35741727 PMCID: PMC9222274 DOI: 10.3390/genes13060965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/16/2022] [Accepted: 05/25/2022] [Indexed: 11/30/2022] Open
Abstract
In this study, we explored the gene expression patterns of the pituitary gland and hypothalamus of Angus cows at different growth and developmental stages by deep sequencing and we identified genes that affect bovine reproductive performance to provide new ideas for improving bovine fertility in production practice. We selected three 6-month-old (weaning period), three 18-month-old (first mating period), and three 30-month-old (early postpartum) Angus cattle. The physiological status of the cows in each group was the same, and their body conformations were similar. After quality control of the sequencing, the transcriptome analyses of 18 samples yielded 129.18 GB of clean data. We detected 13,280 and 13,318 expressed genes in the pituitary gland and hypothalamus, respectively, and screened 35 and 50 differentially expressed genes (DEGs) for each, respectively. The differentially expressed genes in both tissues were mainly engaged in metabolism, lipid synthesis, and immune-related pathways in the 18-month-old cows as compared with the 6-month-old cows. The 30-month-old cows presented more regulated reproductive behavior, and pituitary CAMK4 was the main factor regulating the reproductive behavior during this period via the pathways for calcium signaling, longevity, oxytocin, and aldosterone synthesis and secretion. A variant calling analysis also was performed. The SNP inversions and conversions in each sample were counted according to the different base substitution methods. In all samples, most base substitutions were represented by substitutions between bases A and G, and the probability of base conversion exceeded 70%, far exceeding the transversion. Heterozygous SNP sites exceeded 37.68%.
Collapse
Affiliation(s)
- Yuwen Huang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Chenfeng Yuan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Yun Zhao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Chunjin Li
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Maosheng Cao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Haobang Li
- Hunan Institute of Animal and Veterinary Science, 8 Changliang Road, Changsha 410131, China; (H.L.); (A.S.); (F.H.); (C.H.)
| | - Zijiao Zhao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Ao Sun
- Hunan Institute of Animal and Veterinary Science, 8 Changliang Road, Changsha 410131, China; (H.L.); (A.S.); (F.H.); (C.H.)
| | - Wangdui Basang
- Laboratory of Hulless Barley and Yak Germplasm Resources and Genetic Improvement, Lhasa 850002, China; (W.B.); (Y.Z.)
| | - Yanbin Zhu
- Laboratory of Hulless Barley and Yak Germplasm Resources and Genetic Improvement, Lhasa 850002, China; (W.B.); (Y.Z.)
| | - Lu Chen
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Fang He
- Hunan Institute of Animal and Veterinary Science, 8 Changliang Road, Changsha 410131, China; (H.L.); (A.S.); (F.H.); (C.H.)
| | - Cheng Huan
- Hunan Institute of Animal and Veterinary Science, 8 Changliang Road, Changsha 410131, China; (H.L.); (A.S.); (F.H.); (C.H.)
| | - Boqi Zhang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Tariq Iqbal
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Yamen Wei
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Wenjing Fan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
| | - Kangle Yi
- Hunan Institute of Animal and Veterinary Science, 8 Changliang Road, Changsha 410131, China; (H.L.); (A.S.); (F.H.); (C.H.)
- Correspondence: (K.Y.); (X.Z.)
| | - Xu Zhou
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science and Veterinary Medicine, Jilin University, 5333 Xi’an Avenue, Changchun 130062, China; (Y.H.); (C.Y.); (Y.Z.); (C.L.); (M.C.); (Z.Z.); (L.C.); (B.Z.); (T.I.); (Y.W.); (W.F.)
- Correspondence: (K.Y.); (X.Z.)
| |
Collapse
|
3
|
Sahoo B, Choudhary RK, Sharma P, Choudhary S, Gupta MK. Significance and Relevance of Spermatozoal RNAs to Male Fertility in Livestock. Front Genet 2021; 12:768196. [PMID: 34956322 PMCID: PMC8696160 DOI: 10.3389/fgene.2021.768196] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/15/2021] [Indexed: 12/11/2022] Open
Abstract
Livestock production contributes to a significant part of the economy in developing countries. Although artificial insemination techniques brought substantial improvements in reproductive efficiency, male infertility remains a leading challenge in livestock. Current strategies for the diagnosis of male infertility largely depend on the evaluation of semen parameters and fail to diagnose idiopathic infertility in most cases. Recent evidences show that spermatozoa contains a suit of RNA population whose profile differs between fertile and infertile males. Studies have also demonstrated the crucial roles of spermatozoal RNA (spRNA) in spermatogenesis, fertilization, and early embryonic development. Thus, the spRNA profile may serve as unique molecular signatures of fertile sperm and may play pivotal roles in the diagnosis and treatment of male fertility. This manuscript provides an update on various spRNA populations, including protein-coding and non-coding RNAs, in livestock species and their potential role in semen quality, particularly sperm motility, freezability, and fertility. The contribution of seminal plasma to the spRNA population is also discussed. Furthermore, we discussed the significance of rare non-coding RNAs (ncRNAs) such as long ncRNAs (lncRNAs) and circular RNAs (circRNAs) in spermatogenic events.
Collapse
Affiliation(s)
- Bijayalaxmi Sahoo
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, India
| | - Ratan K Choudhary
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Paramajeet Sharma
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Shanti Choudhary
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Mukesh Kumar Gupta
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, India
| |
Collapse
|
4
|
Cong Y, Wu H, Bian X, Xie Q, Lyu Q, Cui J, Suo L, Kuang Y. Ptk2b deletion improves mice folliculogenesis and fecundity via inhibiting follicle loss mediated by Erk pathway. J Cell Physiol 2020; 236:1043-1053. [PMID: 32608523 DOI: 10.1002/jcp.29914] [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: 01/07/2020] [Accepted: 06/20/2020] [Indexed: 11/09/2022]
Abstract
Ptk2b has been found playing critical roles in oocyte maturation and subsequent fertilization in vitro. But what is the exact in vivo function in reproduction still elusive. Here, by constructing Ptk2b mutant mice, we found Ptk2b was not essential for mice fertility, unexpectedly, contrary to previously reported in vitro findings, we found Ptk2b ablation significantly improved female fecundity. Follicle counting indicated that the number of primordial follicles and growing follicles in matured mice was significantly increased in the absence of Ptk2b, whereas the primordial follicle formation showed no defects. We also found this regulation was in an autophosphorylation independent pathway, as autophosphorylation site mutant mice (PTK2BY402F ) show no phenotype in female fertility. Further biochemistry studies revealed that Ptk2b ablation promotes folliculogenesis via Erk pathway mediate follicle survival. Together, we found a novel biological function of Ptk2b in folliculogenesis, which could be potentially used as a therapeutic target for corresponding infertility.
Collapse
Affiliation(s)
- Yanyan Cong
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haibo Wu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuejiao Bian
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qin Xie
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qifeng Lyu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junqi Cui
- Department of Pathology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lun Suo
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanping Kuang
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
5
|
Gòdia M, Castelló A, Rocco M, Cabrera B, Rodríguez-Gil JE, Balasch S, Lewis C, Sánchez A, Clop A. Identification of circular RNAs in porcine sperm and evaluation of their relation to sperm motility. Sci Rep 2020; 10:7985. [PMID: 32409652 PMCID: PMC7224279 DOI: 10.1038/s41598-020-64711-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/13/2020] [Indexed: 12/16/2022] Open
Abstract
Circular RNAs (circRNAs) are emerging as a novel class of noncoding RNAs which potential role as gene regulators is quickly gaining interest. circRNAs have been studied in different tissues and cell types across several animal species. However, a thorough characterization of the circRNAome in ejaculated sperm remains unexplored. In this study, we profiled the sperm circRNA catalogue using 40 porcine ejaculates. A complex population of 1,598 circRNAs was shared in at least 30 of the 40 samples. Generally speaking, the predicted circRNAs presented low abundances and were tissue-specific. Around 80% of the circRNAs identified in the boar sperm were reported as novel. Results from abundance correlation between circRNAs and miRNAs together with the prediction of microRNA (miRNA) target sites in circRNAs suggested that circRNAs may act as miRNA sponges. Moreover, we found significant correlations between the abundance of 148 exonic circRNAs and sperm motility parameters. Two of these correlations, involving ssc_circ_1458 and ssc_circ_1321, were confirmed by RT-qPCR using 36 additional samples with extreme and opposite sperm motility values. Our study provides a thorough characterization of circRNAs in sperm and suggests that circRNAs hold potential as noninvasive biomarkers for sperm quality and male fertility.
Collapse
Affiliation(s)
- Marta Gòdia
- Animal Genomics Group, Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB, Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Anna Castelló
- Animal Genomics Group, Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB, Cerdanyola del Vallès, Barcelona, Catalonia, Spain.,Unit of Animal Science, Department of Animal and Food Science, Autonomous University of Barcelona, Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Martina Rocco
- Animal Genomics Group, Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB, Cerdanyola del Vallès, Barcelona, Catalonia, Spain.,Unit of Animal Reproduction, Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Betlem Cabrera
- Animal Genomics Group, Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB, Cerdanyola del Vallès, Barcelona, Catalonia, Spain.,Unit of Animal Science, Department of Animal and Food Science, Autonomous University of Barcelona, Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Joan Enric Rodríguez-Gil
- Unit of Animal Reproduction, Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Sam Balasch
- Grup Gepork S.A., Barcelona, Catalonia, Spain
| | - Craig Lewis
- PIC Europe, Sant Cugat del Vallés, Catalonia, Spain
| | - Armand Sánchez
- Animal Genomics Group, Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB, Cerdanyola del Vallès, Barcelona, Catalonia, Spain.,Unit of Animal Science, Department of Animal and Food Science, Autonomous University of Barcelona, Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Alex Clop
- Animal Genomics Group, Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB, Cerdanyola del Vallès, Barcelona, Catalonia, Spain. .,Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Catalonia, Spain.
| |
Collapse
|
6
|
Polyspermy-preventing mechanisms in sea urchin eggs: New developments for an old problem. Biochem Biophys Res Commun 2019; 520:695-698. [DOI: 10.1016/j.bbrc.2019.10.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 10/01/2019] [Indexed: 12/21/2022]
|
7
|
Sharif K, Watad A, Bridgewood C, Kanduc D, Amital H, Shoenfeld Y. Insights into the autoimmune aspect of premature ovarian insufficiency. Best Pract Res Clin Endocrinol Metab 2019; 33:101323. [PMID: 31606343 DOI: 10.1016/j.beem.2019.101323] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Premature ovarian insufficiency (POI) refers to a continuum of decreasing ovarian function in women before the age of 40. To date, the cause of POI in the majority of cases remain unresolved. Many cases has been linked to genetic, toxic, infections, enzymatic and iatrogenic causes. A key function of the immune system is to identify and differentiate "self" and "non self" i.e. tolerance. Loss of self-tolerance results in an immune response against self-tissues and thus autoimmunity. Various investigations have highlighted the role of autoimmunity and its pertinence to POI. Several potential immune antigenic targets in the ovary have been reported to be involved in autoantibody induced autoimmune attack. The presence of lymphocytic oöphorits in ovarian samples of patients with POI provides histopathological evidence of autoimmune ovarian involvement. Finally, POI is strongly associated with other autoimmune conditions including for instance Addison disease, autoimmune polyglandular syndrome (APS) -1, APS-4, hypothyroidism, and diabetes mellitus among other autoimmune diseases. Taken together, these lines of evidence provide strong basis that support the role of autoimmunity as a potential cause of disease etiopathogenesis. Continuing research is increasingly providing more insight into the complex disease process. The aim of this review is to summarize the current literature related to the autoimmune nature of POI.
Collapse
Affiliation(s)
- Kassem Sharif
- Department of Medicine 'B', Tel-Hashomer, Israel; Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Leeds Institute of Rheumatic and Musculoskeletal Medicine, Medicine and Health, University of Leeds, Leeds, United Kingdom
| | - Abdulla Watad
- Department of Medicine 'B', Tel-Hashomer, Israel; Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Charlie Bridgewood
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, Medicine and Health, University of Leeds, Leeds, United Kingdom
| | - Darja Kanduc
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Bari, Italy
| | - Howard Amital
- Department of Medicine 'B', Tel-Hashomer, Israel; Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yehuda Shoenfeld
- Zabludowicz Center for Autoimmune Diseases, Sheba Medical Center, Tel-Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Russia.
| |
Collapse
|
8
|
Wang H, Luo J, Carlton C, McGinnis LK, Kinsey WH. Sperm-oocyte contact induces outside-in signaling via PYK2 activation. Dev Biol 2017; 428:52-62. [PMID: 28527703 PMCID: PMC5539980 DOI: 10.1016/j.ydbio.2017.05.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 05/15/2017] [Accepted: 05/17/2017] [Indexed: 01/20/2023]
Abstract
Fertilization is a multi-step process that begins with plasma membrane interactions that enable sperm - oocyte binding followed by fusion of the sperm and oocyte plasma membranes. Once membrane fusion has occurred, sperm incorporation involves actin remodeling events within the oocyte cortex that allow the sperm head to penetrate the cortical actin layer and gain access to the ooplasm. Despite the significance for reproduction, the control mechanisms involved in gamete binding, fusion, and sperm incorporation are poorly understood. While it is known that proline - rich tyrosine kinase 2 (PYK2 or PTK2b) kinase activity plays an important role in fertilization, its specific function has not been addressed. The present study made use of a zona-free mouse oocyte fertilization assay to investigate the relationship between PYK2 activity and sperm - oocyte binding and fusion, as well as localized changes in actin polymerization and sperm incorporation. In this assay, the majority of bound sperm had no apparent effect on the oocyte and only a few became incorporated into the ooplasm. However, a subset of bound sperm were associated with a localized response in which PYK2 was recruited to the oocyte cortex where it frequently co-localized with a ring or disk of f-actin. The frequency of sperm-oocyte binding sites that exhibited this actin response was reduced in pyk2-/- oocytes and the pyk2-/- oocytes proved less efficient at incorporating sperm, indicating that this protein kinase may have an important role in sperm incorporation. The response of PYK2 to sperm-oocyte interaction appeared unrelated to gamete fusion since PYK2 was recruited to sperm - binding sites under conditions where sperm - oocyte fusion was prevented and since PYK2 suppression or ablation did not prevent sperm - oocyte fusion. While a direct correlation between the PYK2 response in the oocyte and the successful incorporation of individual bound sperm remains to be established, these findings suggest a model in which the oocyte is not a passive participant in fertilization, but instead responds to sperm contact by localized PYK2 signaling that promotes actin remodeling events required to physically incorporate the sperm head into the ooplasm.
Collapse
Affiliation(s)
- Huizhen Wang
- Department of Anatomy & Cell Biology, Univ. of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Jinping Luo
- Department of Anatomy & Cell Biology, Univ. of Kansas Medical Center, Kansas City, KS 66160, USA; Applied StemCell Inc., Milpitas, CA 95035, USA
| | - Carol Carlton
- Department of Anatomy & Cell Biology, Univ. of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Lynda K McGinnis
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, University of Southern California, Los Angeles, CA 90033, USA
| | - William H Kinsey
- Department of Anatomy & Cell Biology, Univ. of Kansas Medical Center, Kansas City, KS 66160, USA.
| |
Collapse
|
9
|
Meng X, Cui B, Cheng D, Lyu H, Jiang L, Zheng K, Liu S, Pan J, Zhang C, Bai J, Zhou J. Activated proline‐rich tyrosine kinase 2 regulates meiotic spindle assembly in the mouse oocyte. J Cell Biochem 2017. [DOI: 10.1002/jcb.26237] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiao‐Qian Meng
- Key Laboratory of Animal Resistance Biology of Shandong ProvinceInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanShandongChina
| | - Bing Cui
- Key Laboratory of Animal Resistance Biology of Shandong ProvinceInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanShandongChina
| | - Dong Cheng
- Shandong Center for Disease Control and PreventionJinanShandongChina
| | - Hui Lyu
- Shandong Center for Disease Control and PreventionJinanShandongChina
| | - Li‐Gang Jiang
- Infertility CenterQilu Hospital of Shandong UniversityJinanShandongChina
| | - Ke‐Gang Zheng
- Key Laboratory of Animal Resistance Biology of Shandong ProvinceInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanShandongChina
| | - Shu‐Zhen Liu
- Key Laboratory of Animal Resistance Biology of Shandong ProvinceInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanShandongChina
| | - Jie Pan
- Key Laboratory of Animal Resistance Biology of Shandong ProvinceInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanShandongChina
| | - Cong Zhang
- Key Laboratory of Animal Resistance Biology of Shandong ProvinceInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanShandongChina
| | - Jing Bai
- Department of Gynecology and ObstetricsJinan Maternity and Child Care HospitalJinanShandongChina
| | - Jun Zhou
- Key Laboratory of Animal Resistance Biology of Shandong ProvinceInstitute of Biomedical SciencesCollege of Life SciencesShandong Normal UniversityJinanShandongChina
| |
Collapse
|
10
|
Meng XQ, Dai YY, Jing LD, Bai J, Liu SZ, Zheng KG, Pan J. Subcellular localization of proline-rich tyrosine kinase 2 during oocyte fertilization and early-embryo development in mice. J Reprod Dev 2016; 62:351-8. [PMID: 27086609 PMCID: PMC5004790 DOI: 10.1262/jrd.2016-015] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Proline-rich tyrosine kinase 2 (Pyk2), a non-receptor tyrosine kinase, is a member of
the focal adhesion kinase family and is highly expressed in oocytes. Using a combination
of confocal microscopy and RNAi, we localized and studied the function of both Pyk2 and
tyrosine-phosphorylated Pyk2 (p-Pyk2) during mouse oocyte fertilization and early embryo
development. At the onset of fertilization, Pyk2 and p-Pyk2 were detected predominantly in
sperm heads and the oocyte cytoplasm. Upon formation of male and female pronuclei, Pyk2
and its activated form leave the cytoplasm and accumulate in the two pronuclei. We
detected Pyk2 in blastomere nuclei and found both Pyk2 and p-Pyk2 in the pre-blastula
cytoplasm. Pyk2 and its activated form then disappeared from the blastula nuclei and
localized to the perinuclear regions, where blastula cells come into contact with each
other. Pyk2 knockdown via microinjection of siRNA into the zygote did not inhibit early
embryo development. Our results suggest that Pyk2 plays multiple functional roles in mouse
oocyte fertilization as well as throughout early embryo development.
Collapse
Affiliation(s)
- Xiao-Qian Meng
- Key Laboratory of Animal Resistance Research, College of Life Science, Shandong Normal University, Jinan 250014, China
| | | | | | | | | | | | | |
Collapse
|
11
|
McGinnis LK, Kinsey WH. Role of focal adhesion kinase in oocyte-follicle communication. Mol Reprod Dev 2015; 82:90-102. [PMID: 25536210 PMCID: PMC4324459 DOI: 10.1002/mrd.22446] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 11/11/2014] [Indexed: 12/19/2022]
Abstract
Germ cells require communication with associated somatic cells for normal gametogenesis, as exemplified by an oocyte that interacts with granulosa cells via paracrine factors as well as gap junctions located at sites of contact between these two cell types. The objective of the present study was to define the mechanisms by which cell-cell contact with the oocyte is controlled and to determine the extent that the oocyte actively participates in this association. Proline-rich tyrosine kinase 2 (PTK2), a focal adhesion kinase, was found to be activated at sites of contact between the oocyte and trans-zonal cell processes from the surrounding granulosa cells. In order to determine the functional significance of oocyte-derived PTK2 signaling in oocyte-follicle communication, an oocyte-specific Ptk2 knockout was produced through a breeding strategy pairing a floxed Ptk2-CAT-eGFP mouse with the Zp3-Cre line. Since Ptk2-null mice never develop to birth, this represents the first opportunity to define the role of PTK2 in oocyte-follicle communication. Ablation of Ptk2 within the developing oocyte resulted in lower fertility with reduced numbers of pups, lower rates of blastocyst formation, and reduced cell numbers per blastocyst. Follicles containing Ptk2-null oocytes exhibited reduced oocyte diameter, reduced numbers of connexin 37 and 43 foci at the oocyte surface, and impaired dye coupling between oocyte and granulosa cells. These findings are consistent with a model in which PTK2 plays a critical role in establishing or maintaining oocyte-granulosa cell contacts that are essential for gap junction-mediated communication between granulosa cells and the oocyte.
Collapse
Affiliation(s)
- Lynda K. McGinnis
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center Kansas City, KS USA
| | - William H. Kinsey
- Department of Anatomy & Cell Biology, University of Kansas Medical Center Kansas City, KS USA
| |
Collapse
|