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Yin J, Diao N, Tian T, Wang Q, Ma S, He N, Zhou H, Zhou Z, Jia W, Wang X, Shi K, Du R. ARHGEF18 can promote BVDV NS5B activation of the host NF-κB signaling pathway by combining with the NS5B-palm domain. Vet Microbiol 2024; 291:109911. [PMID: 38367539 DOI: 10.1016/j.vetmic.2023.109911] [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: 07/25/2023] [Revised: 10/31/2023] [Accepted: 11/04/2023] [Indexed: 02/19/2024]
Abstract
Rho guanine nucleotide exchange factor 18 (ARHGEF18) is a member of the Rho guanine nucleotide exchange factor (RhoGEF) family. RhoGEF plays an important role in the occurrence of tumors and neurological diseases; however, its involvement in host cell resistance against pathogenic microorganisms is mostly unknown. Herein, we report that bovine viral diarrhea virus (BVDV) nonstructural protein 5B (NS5B) can activate the nuclear factor kappa B (NF-κB) signaling pathway to induce an immune response. To clarify the functional domains of NS5B that activate NF-κB signaling, the six structural domains of NS5B were expressed separately: NS5B-core, NS5B-finger, NS5B-palm, NS5B-thumb, NS5B-N and NS5B-c domain. We preliminarily determined that the functional domains of NS5B that activate NF-κB signaling are the finger and palm domains. We used a bovine kidney cell cDNA library and yeast two-hybrid technology to identify that the host protein ARHGEF18 interacts with NS5B. Co-immunoprecipitation assays showed that ARHGEF18 interacts strongly with NS5B-palm. Interestingly ARHGEF18 could promote NF-κB signaling activation by BVDV NS5B. In addition silencing ARHGEF18 significantly inhibited NS5B-palm activation of NF-κB signaling. We concluded that ARHGEF18 can bind to BVDV NS5B through the palm domain to activate the NF-κB pathway. These findings provide direct evidence that BVDV NS5B induces immune responses by activating NF-κB signaling.
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Affiliation(s)
- Jiying Yin
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Naichao Diao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Tian Tian
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Qi Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Shuqi Ma
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Ning He
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Hongming Zhou
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Zehui Zhou
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Wenyi Jia
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Xiaonan Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Kun Shi
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Rui Du
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China; Laboratory of Production and Product Application of Sika Deer of Jilin Province, Jilin Agricultural University, Changchun 130118, China; Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China.
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Loren P, Sánchez-Villalba E, Risopatrón J, Arias ME, Felmer R, Sánchez R. Induction of oxidative stress does not increase the cryotolerance of vitrified embryos. Anim Reprod Sci 2020; 219:106511. [PMID: 32828397 DOI: 10.1016/j.anireprosci.2020.106511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 05/22/2020] [Accepted: 05/23/2020] [Indexed: 10/24/2022]
Abstract
Short-term treatment of mammalian oocytes with different stressors induces stress tolerance of embryos derived from these oocytes. The aims of this study were to evaluate effects on embryo development when there was treatment of oocyte complexes (COCs) used to derive the embryos with hydrogen peroxide (H2O2).The COCs were not incubated with H2O2: control (0 μM), or were incubated with 25, 50, 75, or 100 μM concentrations of H2O2 for 1 h prior to in vitro fertilization, and presumptive zygotes were cultured until day 7. Blastocysts at day 7 of development derived from H2O2-treated (25 μM treatment concentration) COCs were vitrified. Percentage of embryos undergoing cleavage was not affected by any treatment, while percentage of embryos developing to the blastocyst stage was less when there was treatment of COCs with 100 μM of H2O2. Embryo quality was less when COCs used to derive blastocysts were treated with 50, 75, or 100 μM concentrations of H2O2. There were lesser relative abundances of some mRNA transcripts of interest in blastocysts when there was treatment of COCs with H2O2. After vitrification, there were no differences in embryo re-expansion and hatching rates compared with fresh and vitrified blastocysts of the control group and those derived from COCs treated with 25 μM H2O2. In conclusion, treatment of COCs used to derive blastocysts with H2O2 does not induce stress tolerance in vitrified embryos of cattle; however, the viability of these blastocysts is similar to those of the control group.
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Affiliation(s)
- P Loren
- Applied Cellular and Molecular Biology Program, Universidad de La Frontera, Temuco, Chile
| | - E Sánchez-Villalba
- Applied Cellular and Molecular Biology Program, Universidad de La Frontera, Temuco, Chile
| | - J Risopatrón
- Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - M E Arias
- Department of Animal Production, Faculty of Agriculture and Forestry Sciences, Universidad de La Frontera, Temuco, Chile
| | - R Felmer
- Department of Agricultural Sciences and Natural Resources, Faculty of Agriculture and Forestry Sciences, Universidad de La Frontera, Temuco, Chile
| | - R Sánchez
- Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.
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Effects of melatonin on production of reactive oxygen species and developmental competence of bovine oocytes exposed to heat shock and oxidative stress during in vitro maturation. ZYGOTE 2019; 27:180-186. [PMID: 31171044 DOI: 10.1017/s0967199419000236] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
SummaryHeat shock may disrupt oocyte function by increasing the generation of reactive oxygen species (ROS). We evaluated the capacity of the antioxidant melatonin to protect oocytes using two models of oxidative stress - heat shock and the pro-oxidant menadione. Bovine cumulus-oocyte complexes (COC) were exposed in the presence or absence of 1 µM melatonin to the following treatments during maturation: 38.5°C, 41°C and 38.5°C+5 µM menadione. In the first experiment, COC were matured for 3 h with 5 µM CellROX® and analyzed by epifluorescence microscopy to quantify production of ROS. The intensity of ROS was greater for oocytes exposed to heat shock and menadione than for control oocytes. Melatonin reduced ROS intensity for heat-shocked oocytes and oocytes exposed to menadione, but not for control oocytes. In the second experiment, COC were matured for 22 h. After maturation, oocytes were fertilized and the embryos cultured for 7.5 days. The proportion of oocytes that cleaved after fertilization was lower for oocytes exposed to heat shock and menadione than for control oocytes. Melatonin increased cleavage for heat-shocked oocytes and oocytes exposed to menadione, but not for control oocytes. Melatonin tended to increase the developmental competence of embryos from heat-shocked oocytes but not for embryos from oocytes exposed to menadione or from control oocytes. In conclusion, melatonin reduced production of ROS of maturing oocytes and protected oocytes from deleterious effects of both stresses on competence of the oocyte to cleave after coincubation with sperm. These results suggest that excessive production of ROS compromises oocyte function.
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Melatonin Scavenger Properties against Oxidative and Nitrosative Stress: Impact on Gamete Handling and In Vitro Embryo Production in Humans and Other Mammals. Int J Mol Sci 2017; 18:ijms18061119. [PMID: 28613231 PMCID: PMC5485943 DOI: 10.3390/ijms18061119] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/19/2017] [Accepted: 05/21/2017] [Indexed: 11/17/2022] Open
Abstract
Oxidative and nitrosative stress are common problems when handling gametes in vitro. In vitro development in mammalian embryos is highly affected by culture conditions, especially by reactive oxygen species (ROS) and reactive nitrogen species (RNS), because their absence or overproduction causes embryo arrest and changes in gene expression. Melatonin in gamete co-incubation during in vitro fertilization (IVF) has deleterious or positive effects, depending on the concentration used in the culture medium, demonstrating the delicate balance between antioxidant and pro-oxidant activity. Further research is needed to better understand the possible impact of melatonin on the different IVP steps in humans and other mammals, especially in seasonal breeds where this neuro-hormone system highly regulates its reproduction physiology.
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Loren P, Cheuquemán C, Sánchez E, Risopatrón J, Arias ME, Felmer R, Sánchez R. Effect of short-term exposure of cumulus-oocyte complex to 3-morpholinosydnonimine on in vitro embryo development and gene expression in cattle. Reprod Domest Anim 2016; 51:1010-1019. [PMID: 27644683 DOI: 10.1111/rda.12788] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 08/04/2016] [Indexed: 11/28/2022]
Abstract
Short-term exposure of gametes to different types of stress might induce stress tolerance in mammalian embryos. The aim of this study was to evaluate the effect of short-term exposure of bovine mature cumulus-oocyte complex (COC) to 3-morpholinosydnonimine (SIN-1) on subsequent in vitro embryo development, embryo quality and relative gene expression. Matured COCs were incubated with SIN-1 (0, 0.1, 1, 10 and 100 μM SIN-1) for 1 hr before in vitro fertilization and zygotes were cultured until Day 7. The cleavage rate at 72 hr did not show any differences among groups. However, the blastocyst rate on Day 7 decreased with all treatments evaluated, with the embryos generated with 10 μM SIN-1 showing the lowest embryo production rate. Embryo quality analysis did not show any differences in total cell number (TCN) or inner cell mass (ICM) among groups. Relative gene expression analysis showed a downregulation of eNOS expression and an upregulation of nNOS expression in all treatments evaluated compared to the control group. Also, a downregulation was observed in some treatments: SOD2 at 0.1 μM; SOD1 at 0.1 and 100 μM; PRDX5 at 0.1, 10 and 100 μM; and NANOG at 10 and 100 μM; and an upregulation of CDX2 expression was observed at 100 μM. The other genes (OCT4, HIF1A, HSPA1A, BCL2A and iNOS) did not show any differences in the relative gene expression. These results suggest that the short-term exposure of mature bovine COCs to SIN-1 does not induce stress tolerance and has no beneficial effect on bovine in vitro embryo production.
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Affiliation(s)
- P Loren
- Student of Doctoral Program in Sciences major in Applied Cellular and Molecular Biology, Universidad de la Frontera, Temuco, Chile.,Centre of Biotechnology on Reproduction (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - C Cheuquemán
- Centre of Biotechnology on Reproduction (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - E Sánchez
- Student of Doctoral Program in Sciences major in Applied Cellular and Molecular Biology, Universidad de la Frontera, Temuco, Chile.,Centre of Biotechnology on Reproduction (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - J Risopatrón
- Centre of Biotechnology on Reproduction (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Department of Basic Science, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - M E Arias
- Centre of Biotechnology on Reproduction (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Department of Agricultural and Livestock Production, Faculty of Farming, Livestock and Forestry Sciences, Universidad de La Frontera, Temuco, Chile
| | - R Felmer
- Centre of Biotechnology on Reproduction (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Department of Agricultural and Livestock Production, Faculty of Farming, Livestock and Forestry Sciences, Universidad de La Frontera, Temuco, Chile
| | - R Sánchez
- Centre of Biotechnology on Reproduction (CEBIOR-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.,Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
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