1
|
Cao L, Li S, Huang S, Shi D, Li X. AQP8 participates in oestrogen-mediated buffalo follicular development by regulating apoptosis of granulosa cells. Reprod Domest Anim 2021; 56:812-820. [PMID: 33639021 DOI: 10.1111/rda.13921] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/25/2021] [Indexed: 11/29/2022]
Abstract
Aquaporins (AQPs), a family of small membrane-spanning proteins, are involved in fluid transport, cell signalling and reproduction. Regulating AQP8 expression influences apoptosis of granulosa cells (GCs), ovarian folliculogenesis, oogenesis and early embryonic development in mice, but its role has never been investigated in other species. The aim of the present study was to characterize the AQP8 function in buffalo follicular development. The expression pattern of AQP8 in buffalo follicle was analysed by immunohistochemistry method. 17β-Estradiol (E2) or oestrogen receptor antagonist ICI182780 was used to treat GCs cultured in vitro, and the expression of AQP8 was detected using qRT-PCR. Its roles in apoptosis of buffalo GCs were investigated by shRNA technology. AQP8 was found to be expressed higher in secondary follicles (p < .05), and its mRNA level in GCs was upregulated by E2 via receptor-mediated mechanism in a dose-dependent manner. A 732-bp buffalo AQP8 coding region was obtained, which was highly conserved at the amino acid level among different species. AQP8-shRNA2 had more effective inhibition on target gene than AQP8-shRNA1 (66.49% vs. 58.31%) (p < .05). Knockdown of AQP8 induced GCs arrested at G2/M stage and occurred apoptosis. Compared with the control group, higher Caspase9 expression were observed in AQP8-shRNA2 lentivirus infected GCs (p < .05), while Bcl-2 and Bax expression levels had no obvious change (p > .05). Altogether, the above results indicate that AQP8 is involved in oestrogen-mediated regulation of buffalo follicular development by regulating cell cycle progression and apoptosis of GCs.
Collapse
Affiliation(s)
- Lihua Cao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, China
| | - Sheng Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, China.,Huangshi Maternity and Children's Health Hospital of Edong Healthcare Group, Huangshi, China
| | - Shihai Huang
- College of Life Science and Technology, Guangxi University, Nanning, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, China
| | - Xiangping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, China
| |
Collapse
|
2
|
Cao L, Yang T, Huang S, Yun X, Hou H, Wang T, Shi D, Li X. Expression patterns of ZO-1/2 and their effects on porcine oocyte in vitro maturation and early embryonic development. Theriogenology 2020; 161:262-270. [PMID: 33348145 DOI: 10.1016/j.theriogenology.2020.12.009] [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: 06/14/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 12/30/2022]
Abstract
Zonula occludens (ZO)-1 and ZO-2 are involved in epithelial polarity maintenance, gene transcription, cell proliferation and tumor cell metastasis. Regulating ZO-1/2 expression influences the early embryonic development of mice, but whether they are involved in oocyte maturation is still poorly understood. In the present study, the expression patterns of ZO-1 and ZO-2 in porcine cumulus cells and oocytes matured in vitro and early embryos from parthenogenetic activation were detected by qRT-PCR or Western blot, and then their roles in porcine oocyte maturation and early embryo development were investigated by shRNA technology. ZO-1 and ZO-2 were found to be expressed in cumulus cells, oocytes and early embryos, while ZO-1α+ was expressed only in cumulus cells, morula and blastocysts. During in vitro maturation (IVM), the abundance of ZO-1 and ZO-2 in oocytes was significantly higher than that in cumulus cells at 0 h (P < 0.01), and their mRNA and protein levels displayed relatively higher expression at 0 and 18 h, respectively. Compared with the control groups, cumulus cell expansion, oocyte nucleus maturation, and subsequent cleavage were not influenced by treatment of the cumulus-oocyte complexes (COCs) with ZO-1-shRNA1, ZO-2-shRNA2 or combined ZO-1-shRNA1 and ZO-2-shRNA2 lentivirus (P > 0.05). However, the blastocyst rate was reduced by treatment of COCs with ZO-1-shRNA1 but not ZO-2-shRNA2. The total cell number of blastocysts was decreased by downregulation of ZO-1 and ZO-2 (P < 0.05). Downregulation of ZO-1 and ZO-2 also resulted in a significant decrease (P < 0.05) in the expression of Cx43, Cx45, PTX3 and PTGS2 in cumulus cells, Cx45, BMP15, ZP3 and C-KIT in MII oocytes, and Nanog in blastocysts, with the exception of HAS2 expression in cumulus cells and Oct4 expression in blastocysts (P > 0.05). Altogether, the above results indicate that ZO-1 and ZO-2 display similar expression patterns during porcine oocyte IVM and are critical to porcine oocyte maturation and early embryonic development.
Collapse
Affiliation(s)
- Lihua Cao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Ting Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Shihai Huang
- College of Life Science and Technology, Guangxi University, Nanning, 530005, PR China
| | - Xuedan Yun
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Hanqi Hou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Ting Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China.
| | - Xiangping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China.
| |
Collapse
|
3
|
Balakrishnan KN, Abdullah AA, Bala JA, Jesse FFA, Abdullah CAC, Noordin MM, Mohd-Azmi ML. Multiple gene targeting siRNAs for down regulation of Immediate Early-2 (Ie2) and DNA polymerase genes mediated inhibition of novel rat Cytomegalovirus (strain All-03). Virol J 2020; 17:164. [PMID: 33109247 PMCID: PMC7590257 DOI: 10.1186/s12985-020-01436-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/16/2020] [Indexed: 12/15/2022] Open
Abstract
Background Cytomegalovirus (CMV) is an opportunistic pathogen that causes severe complications in congenitally infected newborns and non-immunocompetent individuals. Developing an effective vaccine is a major public health priority and current drugs are fronting resistance and side effects on recipients. In the present study, with the aim of exploring new strategies to counteract CMV replication, several anti-CMV siRNAs targeting IE2 and DNA polymerase gene regions were characterized and used as in combinations for antiviral therapy. Methods The rat embryo fibroblast (REF) cells were transfected with multi siRNA before infecting with CMV strain ALL-03. Viral growth inhibition was measured by tissue culture infectious dose (TCID50), cytopathic effect (CPE) and droplet digital PCR (ddPCR) while IE2 and DNA polymerase gene knockdown was determined by real-time PCR. Ganciclovir was deployed as a control to benchmark the efficacy of antiviral activities of respective individual siRNAs. Results There was no significant cytotoxicity encountered for all the combinations of siRNAs on REF cells analyzed by MTT colorimetric assay (P > 0.05). Cytopathic effects (CPE) in cells infected by RCMV ALL-03 had developed significantly less and at much slower rate compared to control group. The expression of targeted genes was downregulated successfully resulted in significant reduction (P < 0.05) of viral mRNA and DNA copies (dpb + dpc: 79%, 68%; dpb + ie2b: 68%, 60%; dpb + dpc + ie2b: 48%, 42%). Flow cytometry analysis showed a greater percentage of viable and early apoptosis of combined siRNAs-treated cells compared to control group. Notably, the siRNAs targeting gene regions were sequenced and mutations were not encountered, thereby avoiding the formation of mutant with potential resistant viruses. Conclusions In conclusion. The study demonstrated a tremendous promise of innovative approach with the deployment of combined siRNAs targeting at several genes simultaneously with the aim to control CMV replication in host cells.
Collapse
Affiliation(s)
- Krishnan Nair Balakrishnan
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University Putra Malaysia, Selangor, Malaysia
| | - Ashwaq Ahmed Abdullah
- Department of Microbiology, Faculty of Applied Science, Taiz University, Taiz, Yemen
| | - Jamilu Abubakar Bala
- Department of Medical Laboratory Science, Faculty of Allied Health Sciences, Microbiology Unit, Bayero University, Kano, Nigeria
| | - Faez Firdaus Abdullah Jesse
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Selangor, Malaysia
| | | | - Mustapha Mohamed Noordin
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University Putra Malaysia, Selangor, Malaysia
| | - Mohd Lila Mohd-Azmi
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University Putra Malaysia, Selangor, Malaysia.
| |
Collapse
|
4
|
Zhang N, Jing X, Liu Y, Chen M, Zhu X, Jiang J, Wang H, Li X, Hao P. Interfering with retrotransposition by two types of CRISPR effectors: Cas12a and Cas13a. Cell Discov 2020; 6:30. [PMID: 32435507 PMCID: PMC7235257 DOI: 10.1038/s41421-020-0164-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/30/2020] [Indexed: 02/07/2023] Open
Abstract
CRISPRs are a promising tool being explored in combating exogenous retroviral pathogens and in disabling endogenous retroviruses for organ transplantation. The Cas12a and Cas13a systems offer novel mechanisms of CRISPR actions that have not been evaluated for retrovirus interference. Particularly, a latest study revealed that the activated Cas13a provided bacterial hosts with a "passive protection" mechanism to defend against DNA phage infection by inducing cell growth arrest in infected cells, which is especially significant as it endows Cas13a, a RNA-targeting CRISPR effector, with mount defense against both RNA and DNA invaders. Here, by refitting long terminal repeat retrotransposon Tf1 as a model system, which shares common features with retrovirus regarding their replication mechanism and life cycle, we repurposed CRISPR-Cas12a and -Cas13a to interfere with Tf1 retrotransposition, and evaluated their different mechanisms of action. Cas12a exhibited strong inhibition on retrotransposition, allowing marginal Tf1 transposition that was likely the result of a lasting pool of Tf1 RNA/cDNA intermediates protected within virus-like particles. The residual activities, however, were completely eliminated with new constructs for persistent crRNA targeting. On the other hand, targeting Cas13a to Tf1 RNA intermediates significantly inhibited Tf1 retrotransposition. However, unlike in bacterial hosts, the sustained activation of Cas13a by Tf1 transcripts did not cause cell growth arrest in S. pombe, indicating that virus-activated Cas13a likely acted differently in eukaryotic cells. The study gained insight into the actions of novel CRISPR mechanisms in combating retroviral pathogens, and established system parameters for developing new strategies in treatment of retrovirus-related diseases.
Collapse
Affiliation(s)
- Niubing Zhang
- Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032 China
- School of Life Sciences, Henan University, 475000 Kaifeng, Henan China
| | - Xinyun Jing
- Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032 China
| | - Yuanhua Liu
- Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031 China
| | - Minjie Chen
- Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032 China
- School of Life Sciences, Henan University, 475000 Kaifeng, Henan China
| | - Xianfeng Zhu
- School of Life Sciences, Henan University, 475000 Kaifeng, Henan China
| | - Jing Jiang
- School of Life Sciences, Henan University, 475000 Kaifeng, Henan China
| | - Hongbing Wang
- Department of Physiology, Michigan State University, East Lansing, MI USA
| | - Xuan Li
- Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032 China
| | - Pei Hao
- Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031 China
| |
Collapse
|
5
|
RNAi combining Sleeping Beauty transposon system inhibits ex vivo expression of foot-and-mouth disease virus VP1 in transgenic sheep cells. Sci Rep 2017; 7:10065. [PMID: 28855524 PMCID: PMC5577316 DOI: 10.1038/s41598-017-09302-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 07/25/2017] [Indexed: 11/08/2022] Open
Abstract
Foot and mouth disease, which is induced by the foot and mouth disease virus (FMDV), takes its toll on the cloven-hoofed domestic animals. The VP1 gene in FMDV genome encodes the viral capsid, a vital element for FMDV replication. Sleeping Beauty (SB) is an active DNA-transposon system responsible for genetic transformation and insertional mutagenesis in vertebrates. In this study, a conserved VP1-shRNA which specifically targets the ovine FMDV-VP1 gene was constructed and combined with SB transposase and transposon. Then, they were microinjected into pronuclear embryos to breed transgenic sheep. Ninety-two lambs were born and the VP1-shRNA was positively integrated into eight of them. The rate of transgenic sheep production in SB transposon system was significantly higher than that in controls (13.04% vs. 3.57% and 7.14%, P < 0.05). The ear fibroblasts of the transgenic lambs transfected with the PsiCheck2-VP1 vector had a significant inhibitory effect on the VP1 gene of the FMDV. In conclusion, the VP1-shRNA transgenic sheep were successfully generated by the current new method. The ear fibroblasts from these transgenic sheep possess a great resistance to FMDV. The result indicated that RNAi technology combining the "Sleeping Beauty" transposon system is an efficient method to produce transgenic animals.
Collapse
|
6
|
Wang P, Li X, Cao L, Huang S, Li H, Zhang Y, Yang T, Jiang J, Shi D. MicroRNA-148a overexpression improves the early development of porcine somatic cell nuclear transfer embryos. PLoS One 2017; 12:e0180535. [PMID: 28665977 PMCID: PMC5493425 DOI: 10.1371/journal.pone.0180535] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 06/02/2017] [Indexed: 12/15/2022] Open
Abstract
Incomplete epigenetic reprogramming of donor cell nuclei is one of the main contributors to the low efficiency of somatic cell nuclear transfer (SCNT). To improve the success of SCNT, somatic cell DNA methylation levels must be reduced to those levels found in totipotent embryonic cells. Recent studies have demonstrated that miR-148a can affect DNA methylation via DNMT1 modulation in various cancers. Therefore, the focus of this study was to examine the influence of miR-148a on DNA methylation in donor cells and in SCNT embryo development. Thus, a stable cell line overexpressing miR-148a was established and used to produce SCNT embryos. Upon examination, DNMT1 was found to be a miR-148a target in porcine fetal fibroblasts (PFF). Furthermore, miR-148a overexpression in PFFs significantly decreased DNMT1 expression and global DNA methylation levels (P < 0.05). Moreover, miRNA-148a expression levels in SCNT embryos were significantly lower at the 2-cell and 4-cell stages when compared to IVF and parthenogenetic embryos. The group overexpressing miRNA-148a also showed a significant increase in blastocyst formation and total cell numbers (P < 0.05). Additionally, miR-148a overexpression altered the immunofluorescence signal of 5-mC and H3K9ac, and enhanced pluripotent gene (Oct4 and Nanog) expression levels during embryo development. These results indicate that miR-148a overexpression enhances the developmental potential of SCNT embryos and modifies epigenetic status.
Collapse
Affiliation(s)
- Ping Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Xiangping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
- * E-mail: (XPL); (DSS)
| | - Lihua Cao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Shihai Huang
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Haiyan Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Yan Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Ting Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Jianrong Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi Zhuang Autonomous Region, China
- * E-mail: (XPL); (DSS)
| |
Collapse
|
7
|
Robinson L, Knight-Jones TJD, Charleston B, Rodriguez LL, Gay CG, Sumption KJ, Vosloo W. Global Foot-and-Mouth Disease Research Update and Gap Analysis: 5 - Biotherapeutics and Disinfectants. Transbound Emerg Dis 2016; 63 Suppl 1:49-55. [DOI: 10.1111/tbed.12519] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - L. L. Rodriguez
- Plum Island Animal Disease Center; ARS; USDA; Greenport NY USA
| | - C. G. Gay
- National Program 103-Animal Health; Agricultural Research Service; USDA; Beltsville MD USA
| | - K. J. Sumption
- European Commission for the Control of FMD (EuFMD); FAO; Rome Italy
| | - W. Vosloo
- Australian Animal Health Laboratory; CSIRO-Biosecurity Flagship; Geelong Vic. Australia
| |
Collapse
|