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Yu H, Yong W, Gao T, Na M, Zhang Y, Kuguminkiriza IH, Kenechukwu AA, Guo Q, Zhang G, Deng X. Hormesis of low-dose inhibition of pAkt1 (Ser473) followed by a great increase of proline-rich inositol polyphosphate 5-phosphatase (PIPP) level in oocytes. In Vitro Cell Dev Biol Anim 2021; 57:342-349. [PMID: 33537929 DOI: 10.1007/s11626-021-00546-w] [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: 10/10/2020] [Accepted: 01/06/2021] [Indexed: 10/22/2022]
Abstract
Hormesis describes a biphasic dose-response relationship generally characterized by a low-dose excitement and a high-dose inhibition. This phenomenon has been observed in the regulation of cell, organ, and organismic level. However, hormesis has not reported in oocytes. In this study, we observed, for the first time, hormetic responses of PIPP levels in oocytes by inhibitor of Akt1 or PKCδ. The expression of PIPP was detected by qPCR, immunofluorescent (IF), and Western Blot (WB). To observe the changes of PIPP levels, we used the inhibitors against pAkt1 (Ser473) or PKCδ, SH-6 or sotrastaurin with low and/or high-dose, treated GV oocytes and cultured for 4 h, respectively. The results showed that PIPP expression was significantly enhanced when oocytes were treated with SH-6 or sotrastaurin 10 μM, but decreased with SH-6 or sotrastaurin 100 μM. We also examined the changes of PIPP levels when GV oocytes were treated with exogenous PtdIns(3,4,5)P3 or LY294002 for 4 h. Our results showed that PIPP level was enhanced much higher under the treatment of 0.1 μM PtdIns(3,4,5)P3 than that of 1 μM PtdIns(3,4,5)P3, which is consistent with the changes of PIPP when oocytes were treated with inhibitors of pAkt1 (Ser473) or PKCδ. In addition, with PIPP siRNA, we detected that down-regulated PIPP may affect distributions of Akt, Cdc25, and pCdc2 (Tyr15). Taken together, these results show that the relationships between PIPP and Akt may follow the principle of hormesis and play a key role during release of diplotene arrest in mouse oocytes.
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Affiliation(s)
- Hang Yu
- Department of Physics and Biophysics, School of Fundamental Sciences, China Medical University (CMU), Shenyang, 110122, People's Republic of China
| | - Wei Yong
- Center Laboratory of the Fourth Affiliated Hospital, China Medical University (CMU), Shenyang, 110032, People's Republic of China
| | - Teng Gao
- Center Laboratory of the Fourth Affiliated Hospital, China Medical University (CMU), Shenyang, 110032, People's Republic of China
| | - Man Na
- Center Laboratory of the Fourth Affiliated Hospital, China Medical University (CMU), Shenyang, 110032, People's Republic of China
| | - Ye Zhang
- Center Laboratory of the Fourth Affiliated Hospital, China Medical University (CMU), Shenyang, 110032, People's Republic of China
| | | | | | - Qingguo Guo
- Department of Biochemistry and Molecular Biology, CMU, Shenyang, China
| | - Guoli Zhang
- Institute of Veterinary Medicine, The Academy of Military Medical Sciences of PLA, Changchun, 130122, Jilin, People's Republic of China
| | - Xin Deng
- Center Laboratory of the Fourth Affiliated Hospital, China Medical University (CMU), Shenyang, 110032, People's Republic of China.
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Liu L, Li H, Labbe B, Wang Y, Mao S, Cao Y, Zhao M, Liu S, Yu H, Deng X. Involvement of CaMKII in regulating the release of diplotene-arrested mouse oocytes by pAkt1 (Ser473). Cell Cycle 2019; 18:2986-2997. [PMID: 31530151 DOI: 10.1080/15384101.2019.1666596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Calcium (Ca2+)/calmodulin-dependent protein kinase II (CaMKII) had been reported to play a role in the process of fertilization. However, the role of CaMKII in the release of diplotene-arrested oocytes is poorly understood. In this study, we explored the potential effect of CaMKII on Akt1 and the relationship among CaMKII, Akt1 and phosphatidylinositol (3,4,5)-trisphosphate (PIP3) during the meiotic resumption of mouse oocytes. We found that inhibition of CaMKII aggravated diplotene arrest. We detected the expression and distribution of pCaMKII (Thr286), pAkt1 (Ser473), Cdc25B and pCdc2 (Tyr15) when oocytes were treated with KN-93, SH-6, LY294002 or PIP3, respectively. Our data showed that down-regulated CaMKII by KN-93 decreased the levels of pAkt1 (Ser473) and rearranged the distribution of pAkt1 (Ser473). Meanwhile, down-regulated pAkt1 (Ser473) by SH-6 also decreased the levels of pCaMKII (Thr286), Cdc25B and pCdc2 (Tyr15) significantly and rearranged the distributions of pCaMKII (Thr286). Furthermore, our data showed that exogenous PIP3 up-regulated GVBD rates significantly and increased the levels of pCaMKII (Thr286) and pAkt1 (Ser473). On the contrary, down-regulation of PIP3 by LY294002 decreased GVBD rates and the levels of pCaMKII (Thr286) and pAkt1 (Ser473), respectively. Our results showed that Akt1 and CaMKII regulated each other, and PIP3 may be involved in these regulations during the release of mouse oocytes from diplotene arrest.
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Affiliation(s)
- Lingling Liu
- Central Laboratory of the Fourth Affiliated Hospital, CMU , Shenyang , PR China.,Department of Physiology, China Medical University (CMU) , Shenyang , PR China.,Mouse Genome Editing Core, Dept of Laboratory Animal Science, Shanghai Public Health Clincial Center, Fudan University , Shanghai , PR China
| | - Hanwen Li
- Department of Anorectum, the Fourth Affiliated Hospital, China Medical University (CMU) , Shenyang , PR China
| | - Ben Labbe
- Department of Microbiology and Immunology, Indiana University School of Medicine , Indianapolis, IN , USA
| | - Yang Wang
- Department of Physiology, China Medical University (CMU) , Shenyang , PR China
| | - Shitao Mao
- Department of Pneumology, the Fourth Affiliated Hospital, CMU , Shenyang , PR China
| | - Yu Cao
- Department of Physiology, China Medical University (CMU) , Shenyang , PR China
| | - Mingjing Zhao
- Department of Pneumology, the Fourth Affiliated Hospital, CMU , Shenyang , PR China
| | - Shuo Liu
- Department of Pneumology, the Fourth Affiliated Hospital, CMU , Shenyang , PR China
| | - Hang Yu
- Department of Biophysics, China Medical University (CMU) , Shenyang , China
| | - Xin Deng
- Central Laboratory of the Fourth Affiliated Hospital, CMU , Shenyang , PR China.,Department of Physiology, China Medical University (CMU) , Shenyang , PR China.,Department of Pneumology, the Fourth Affiliated Hospital, CMU , Shenyang , PR China
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Liu L, Li S, Li H, Yu D, Li C, Li G, Cao Y, Feng C, Deng X. Protein kinase Cδ (PKCδ) involved in the regulation of pAkt1 (Ser473) on the release of mouse oocytes from diplotene arrest. Cell Biochem Funct 2018; 36:221-227. [PMID: 29774951 DOI: 10.1002/cbf.3334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/21/2018] [Accepted: 04/23/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Lingling Liu
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
- Central Laboratory of the Fourth Affiliated Hospital; China Medical University (CMU); Shenyang PR China
| | - Sen Li
- Department of Neurology; the Fourth Affiliated Hospital, CMU; Shenyang PR China
| | - Hanwen Li
- Department of Anorectum; the Fourth Affiliated Hospital, CMU; Shenyang PR China
| | - Dahai Yu
- IVF Center; Affiliated Shengjing Hospital, CMU; Shenyang PR China
| | - Chunyu Li
- Department of Anorectum; the Fourth Affiliated Hospital, CMU; Shenyang PR China
| | - Gensong Li
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
| | - Yu Cao
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
| | - Chen Feng
- Department of Biochemistry and Molecular Biology; CMU; Shenyang PR China
| | - Xin Deng
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
- Central Laboratory of the Fourth Affiliated Hospital; China Medical University (CMU); Shenyang PR China
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Chen J, Lian X, Du J, Xu S, Wei J, Pang L, Song C, He L, Wang S. Inhibition of phosphorylated Ser473-Akt from translocating into the nucleus contributes to 2-cell arrest and defective zygotic genome activation in mouse preimplantation embryogenesis. Dev Growth Differ 2016; 58:280-92. [DOI: 10.1111/dgd.12273] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 02/03/2016] [Accepted: 02/05/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Junming Chen
- Department of Human Anatomy, Histology and Embryology; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Xiuli Lian
- Department of Human Anatomy, Histology and Embryology; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Juan Du
- Department of Human Anatomy, Histology and Embryology; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Songhua Xu
- Department of Human Anatomy, Histology and Embryology; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Jianen Wei
- Department of Human Anatomy, Histology and Embryology; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Lili Pang
- Cellular and Developmental Engineering Center; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Chanchan Song
- Cellular and Developmental Engineering Center; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Lin He
- Department of Human Anatomy, Histology and Embryology; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
| | - Shie Wang
- Department of Human Anatomy, Histology and Embryology; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
- Cellular and Developmental Engineering Center; School of Basic Medical Sciences; Fujian Medical University; Fuzhou Fujian 350108 China
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Abstract
Phosphoinositide signalling molecules interact with a plethora of effector proteins to regulate cell proliferation and survival, vesicular trafficking, metabolism, actin dynamics and many other cellular functions. The generation of specific phosphoinositide species is achieved by the activity of phosphoinositide kinases and phosphatases, which phosphorylate and dephosphorylate, respectively, the inositol headgroup of phosphoinositide molecules. The phosphoinositide phosphatases can be classified as 3-, 4- and 5-phosphatases based on their specificity for dephosphorylating phosphates from specific positions on the inositol head group. The SAC phosphatases show less specificity for the position of the phosphate on the inositol ring. The phosphoinositide phosphatases regulate PI3K/Akt signalling, insulin signalling, endocytosis, vesicle trafficking, cell migration, proliferation and apoptosis. Mouse knockout models of several of the phosphoinositide phosphatases have revealed significant physiological roles for these enzymes, including the regulation of embryonic development, fertility, neurological function, the immune system and insulin sensitivity. Importantly, several phosphoinositide phosphatases have been directly associated with a range of human diseases. Genetic mutations in the 5-phosphatase INPP5E are causative of the ciliopathy syndromes Joubert and MORM, and mutations in the 5-phosphatase OCRL result in Lowe's syndrome and Dent 2 disease. Additionally, polymorphisms in the 5-phosphatase SHIP2 confer diabetes susceptibility in specific populations, whereas reduced protein expression of SHIP1 is reported in several human leukaemias. The 4-phosphatase, INPP4B, has recently been identified as a tumour suppressor in human breast and prostate cancer. Mutations in one SAC phosphatase, SAC3/FIG4, results in the degenerative neuropathy, Charcot-Marie-Tooth disease. Indeed, an understanding of the precise functions of phosphoinositide phosphatases is not only important in the context of normal human physiology, but to reveal the mechanisms by which these enzyme families are implicated in an increasing repertoire of human diseases.
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Chandramouli KH, Reish D, Qian PY. Gel-based and gel-free identification of proteins and phosphopeptides during egg-to-larva transition in polychaete Neanthes arenaceodentata. PLoS One 2012; 7:e38814. [PMID: 22719953 PMCID: PMC3376139 DOI: 10.1371/journal.pone.0038814] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 05/10/2012] [Indexed: 12/15/2022] Open
Abstract
The polychaete Neanthes arenaceodentata- is cosmopolitan in distribution-, has been used as a laboratory test animal. Life history of this species has several unique features; the female dies after spawning and the male incubates the fertilized eggs through the 21-segmented stage. The larvae leave the tube and commence feeding. Changes in protein abundance and phosphorylation were examined during early development of N. arenaceodentata. A gel-based approach and gel-free enrichment of phosphopeptides coupled with mass spectrometry were used to identify proteins and phosphopeptides in fertilized ova and larval stages. Patterns of proteins and phosphoproteins changed from fertilized ova to larval stages. Twelve proteins occurred in phosphorylated form and nine as stage specific proteins. Cytoskeletal proteins have exhibited differential phosphorylation from ova to larval stages; whereas, other proteins exhibited stage-specific phosphorylation patterns. Ten phosphopeptides were identified that showed phosphorylation sites on serine or threonine residues. Sixty percent of the identified proteins were related to structural reorganization and others with protein synthesis, stress response and attachment. The abundance and distribution of two cytoskeleton proteins were examined further by 2-DE Western blot analysis. This is the first report on changes in protein expression and phosphorylation sites at Thr/Ser in early development of N. arenaceodentata. The 2-DE proteome maps and identified phosphoproteins contributes toward understanding the state of fertilized ova and early larval stages and serves as a basis for further studies on proteomics changes under different developmental conditions in this and other polychaete species.
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Affiliation(s)
| | - Donald Reish
- Department of Biological Sciences, California State University, Long Beach, California, United States of America
- * E-mail: (DR); (PYQ)
| | - Pei-Yuan Qian
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong SAR, China
- * E-mail: (DR); (PYQ)
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