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Pioltine EM, Costa CB, Franchi FF, dos Santos PH, Nogueira MFG. Tauroursodeoxycholic Acid Supplementation in In Vitro Culture of Indicine Bovine Embryos: Molecular and Cellular Effects on the In Vitro Cryotolerance. Int J Mol Sci 2023; 24:14060. [PMID: 37762363 PMCID: PMC10531190 DOI: 10.3390/ijms241814060] [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: 07/21/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
During embryo development, the endoplasmic reticulum (ER) acts as an important site for protein biosynthesis; however, in vitro culture (IVC) can negatively affect ER homeostasis. Therefore, the aim of our study was to evaluate the effects of the supplementation of tauroursodeoxycholic acid (TUDCA), an ER stress inhibitor, in the IVC of bovine embryos. Two experiments were carried out: Exp. 1: an evaluation of blastocyst rate, hatching kinetics, and gene expression of hatched embryos after being treated with different concentrations of TUDCA (50, 200, or 1000 μM) in the IVC; Exp. 2: an evaluation of the re-expansion, hatching, and gene expression of hatched embryos previously treated with 200 µM of TUDCA at IVC and submitted to vitrification. There was no increase in the blastocyst and hatched blastocyst rates treated with TUDCA in the IVC. However, embryos submitted to vitrification after treatment with 200 µM of TUDCA underwent an increased hatching rate post-warming together with a down-regulation in the expression of ER stress-related genes and the accumulation of lipids. In conclusion, this work showed that the addition of TUDCA during in vitro culture can improve the cryotolerance of the bovine blastocyst through the putative modulation of ER and oxidative stress.
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Affiliation(s)
- Elisa Mariano Pioltine
- Multi-User Laboratory of Phytomedicines Pharmacology, and Biotechnology (PhitoPharmaTec), Department of Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-000, Brazil
| | - Camila Bortoliero Costa
- Multi-User Laboratory of Phytomedicines Pharmacology, and Biotechnology (PhitoPharmaTec), Department of Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-000, Brazil
- Laboratory of Embryonic Micromanipulation, Department of Biological Sciences, School of Sciences and Languages, São Paulo State University (UNESP), Assis 19806-900, Brazil
| | - Fernanda Fagali Franchi
- Multi-User Laboratory of Phytomedicines Pharmacology, and Biotechnology (PhitoPharmaTec), Department of Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-000, Brazil
| | - Priscila Helena dos Santos
- Multi-User Laboratory of Phytomedicines Pharmacology, and Biotechnology (PhitoPharmaTec), Department of Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-000, Brazil
| | - Marcelo Fábio Gouveia Nogueira
- Multi-User Laboratory of Phytomedicines Pharmacology, and Biotechnology (PhitoPharmaTec), Department of Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-000, Brazil
- Laboratory of Embryonic Micromanipulation, Department of Biological Sciences, School of Sciences and Languages, São Paulo State University (UNESP), Assis 19806-900, Brazil
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Canat A, Atilla D, Torres‐Padilla M. Hyperosmotic stress induces 2-cell-like cells through ROS and ATR signaling. EMBO Rep 2023; 24:e56194. [PMID: 37432066 PMCID: PMC10481651 DOI: 10.15252/embr.202256194] [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: 09/27/2022] [Revised: 06/25/2023] [Accepted: 06/28/2023] [Indexed: 07/12/2023] Open
Abstract
Mouse embryonic stem cells (ESCs) display pluripotency features characteristic of the inner cell mass of the blastocyst. Mouse embryonic stem cell cultures are highly heterogeneous and include a rare population of cells, which recapitulate characteristics of the 2-cell embryo, referred to as 2-cell-like cells (2CLCs). Whether and how ESC and 2CLC respond to environmental cues has not been fully elucidated. Here, we investigate the impact of mechanical stress on the reprogramming of ESC to 2CLC. We show that hyperosmotic stress induces 2CLC and that this induction can occur even after a recovery time from hyperosmotic stress, suggesting a memory response. Hyperosmotic stress in ESCs leads to accumulation of reactive-oxygen species (ROS) and ATR checkpoint activation. Importantly, preventing either elevated ROS levels or ATR activation impairs hyperosmotic-mediated 2CLC induction. We further show that ROS generation and the ATR checkpoint act within the same molecular pathway in response to hyperosmotic stress to induce 2CLCs. Altogether, these results shed light on the response of ESC to mechanical stress and on our understanding of 2CLC reprogramming.
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Affiliation(s)
- Antoine Canat
- Institute of Epigenetics and Stem Cells (IES)Helmholtz Zentrum MünchenMünchenGermany
| | - Derya Atilla
- Institute of Epigenetics and Stem Cells (IES)Helmholtz Zentrum MünchenMünchenGermany
| | - Maria‐Elena Torres‐Padilla
- Institute of Epigenetics and Stem Cells (IES)Helmholtz Zentrum MünchenMünchenGermany
- Faculty of BiologyLudwig‐Maximilians UniversitätMünchenGermany
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3
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Xing X, Peng J, Zhao J, Shi R, Wang C, Zhang Z, Wang Z, Li Z, Wu Z. Luteolin regulates the distribution and function of organelles by controlling SIRT1 activity during postovulatory oocyte aging. Front Nutr 2023; 10:1192758. [PMID: 37583461 PMCID: PMC10424794 DOI: 10.3389/fnut.2023.1192758] [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: 03/23/2023] [Accepted: 07/04/2023] [Indexed: 08/17/2023] Open
Abstract
The quality of oocytes determines their development competence, which will be rapidly lost if the oocytes are not fertilized at the proper time after ovulation. SIRT1, one of the sirtuin family members, has been proven to protect the quality of oocytes during postovulatory oocyte aging. However, evidence of the effect of SIRT1 on the activity of organelles including the mitochondria, the endoplasmic reticulum (ER), the Golgi apparatus, and the lysosomes in postovulatory aging oocyte is lacking. In this study, we investigated the distribution and function of organelles in postovulatory aged oocytes and discovered abnormalities. Luteolin, which is a natural flavonoid contained in vegetables and fruits, is an activator of SIRT1. When the oocytes were treated with luteolin, the abnormal distribution of mitochondria, ER, and Golgi complex were restored during postovulatory oocyte aging. The ER stress protein GRP78 and the lysosome protein LAMP1 increased, while the mitochondrial membrane potential and the Golgi complex protein GOLPH3 decreased in aged oocytes, and these were restored by luteolin treatment. EX-527, an inhibitor of SIRT1, disrupted the luteolin-mediated normal distribution and function of mitochondria, ER, Golgi apparatus, and lysosomes. In conclusion, we demonstrate that luteolin regulates the distribution and function of mitochondria, ER, Golgi apparatus, and lysosomes during postovulatory oocyte aging by activating SIRT1.
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Affiliation(s)
- Xupeng Xing
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jingfeng Peng
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jingyu Zhao
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Ruoxi Shi
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Caiqin Wang
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Zihan Zhang
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Zihan Wang
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
- College of Second Clinical Medical, Jining Medical University, Jining, China
| | - Zicong Li
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zhenfang Wu
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, China
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Crasta DN, Nair R, Kumari S, Dutta R, Adiga SK, Zhao Y, Kannan N, Kalthur G. Haploid Parthenogenetic Embryos Exhibit Unique Stress Response to pH, Osmotic and Oxidative Stress. Reprod Sci 2023; 30:2137-2151. [PMID: 36690917 PMCID: PMC10310621 DOI: 10.1007/s43032-023-01166-3] [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: 10/18/2022] [Accepted: 12/28/2022] [Indexed: 01/25/2023]
Abstract
Preimplantation-stage embryos are susceptible to various types of stress when cultured in vitro. Parthenogenetic embryos that lack spermatozoa contribution exhibit aberrant developmental dynamics due to their uniparental origin. Herein, we assessed whether the absence of paternal genome affects the susceptibility of the embryos to pH, osmotic and oxidative stress. Haploid parthenogenetic embryos (HPE) (activated oocytes with 1 pronucleus and 2 polar bodies) were generated by incubating cumulus oocyte complexes of Swiss albino mice with 10 mM strontium chloride for 3 h. Normally fertilized embryos (NFE) (fertilized oocytes with 2 pronuclei and 2 polar bodies) were derived using in vitro fertilization. At 2-cell stage, both HPE and NFE were exposed to various stressors including pH (6.8 to 8.2), osmotic (isotonic, hypotonic, and hypertonic), and peroxidatic oxidative (H2O2, 25 µM) stress. Endoplasmic reticulum stress response, mitochondrial membrane potential, and the rate of blastocyst development were assessed. HPE were susceptible to alteration in the pH that was well tolerated by NFE. Similarly, HPE displayed remarkable difference in sensitivity to hypertonic stress and oxidative stress compared to NFE. The results clearly indicate that the oocytes that develop into embryos in the absence of paternal contribution are more vulnerable to environmental stressors, further highlighting the importance of spermatozoa contribution and/or the ploidy status in mitigating these stressors and towards healthy early embryo development.
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Affiliation(s)
- Daphne Norma Crasta
- Division of Reproductive Biology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Ramya Nair
- Manipal Center for Biotherapeutic Research, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Sandhya Kumari
- Division of Reproductive Biology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Rahul Dutta
- Division of Reproductive Biology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Satish Kumar Adiga
- Division of Clinical Embryology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Yulian Zhao
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN, USA
- Division of Clinical Core Laboratory Services, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Nagarajan Kannan
- Division of Experimental Pathology and Laboratory Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
- Center for Regenerative Biotherapeutics, Mayo Clinic, Rochester, MN, USA
- Mayo Clinic Cancer Center, Mayo Clinic, Rochester, MN, USA
| | - Guruprasad Kalthur
- Division of Reproductive Biology, Department of Reproductive Science, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, 576104, India.
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Fei CF, Guo SM, Yin Y, He X, Zhou LQ. Exposure of mouse oocytes to N,N-dimethylformamide impairs mitochondrial functions and reduces oocyte quality. ENVIRONMENTAL TOXICOLOGY 2022; 37:1563-1574. [PMID: 35238128 DOI: 10.1002/tox.23506] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 02/16/2022] [Accepted: 02/19/2022] [Indexed: 06/14/2023]
Abstract
N,N-dimethylformamide (DMF) is a widely-used solvent for the synthesis of synthetic fibers such as polyacrylonitrile fiber, and can also be used to make medicine. Although this organic solvent has multipurpose applications, its biological toxicity cannot be ignored and its impact on mammalian reproduction remains largely unexplored. Our study found that DMF exposure inhibited oocyte maturation and fertilization ability. Transcriptomic analysis indicated that DMF exposure changed the expression of genes and transposable elements in oocytes. Subcellular structure examination found that DMF exposure caused mitochondrial dysfunction, abnormal aggregation of mitochondria and decreased mitochondrial membrane potential in mouse oocytes. Its exposure also caused abnormal distribution of Golgi apparatus and endoplasmic reticulum which formed large number of clusters. In addition, oxidative stress occurs in oocytes exposed to DMF, which was manifested by an increase in the level of reactive oxygen species. We found that DMF exposure induced disordered spindle and chromosomes abnormality. Meanwhile, we examined various histone modification levels in oocytes exposed to DMF and found that DMF exposure reduced H3K9me3, H3K9ac, H3K27ac, and H4K16ac levels in mouse oocytes. Moreover, DMF-treated oocytes failed to form pronuclei after fusion with normal sperm. Collectively, DMF exposure caused mitochondrial damage, oxidative stress, spindle assembly and chromosome arrangement disorder, leading to oocyte maturation arrest and fertilization failure.
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Affiliation(s)
- Cai-Feng Fei
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shi-Meng Guo
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ying Yin
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ximiao He
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Li-Quan Zhou
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Pasha M, Kirschenman R, Wooldridge A, Spaans F, Cooke CLM, Davidge ST. The Effect of Tauroursodeoxycholic Acid (TUDCA) Treatment on Pregnancy Outcomes and Vascular Function in a Rat Model of Advanced Maternal Age. Antioxidants (Basel) 2022; 11:antiox11071275. [PMID: 35883766 PMCID: PMC9312116 DOI: 10.3390/antiox11071275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 11/23/2022] Open
Abstract
Advanced maternal age (≥35 years) increases the risk of vascular complications in pregnancy that can result in fetal growth restriction and preeclampsia. Endoplasmic reticulum (ER) stress has been linked to adverse pregnancy outcomes in these complicated pregnancies. However, the role of ER stress in advanced maternal age is not known. We hypothesize that increased ER stress contributes to altered vascular function and poor pregnancy outcomes, and that treatment with the ER-stress inhibitor TUDCA will improve pregnancy outcomes. First, young and aged non-pregnant/pregnant rats were used to assess ER stress markers in mesenteric arteries; mesenteric artery phospho-eIF2α and CHOP expression were increased in aged dams compared to young dams. In a second study, young and aged control and TUDCA-treated dams were studied on gestational day (GD) 20 (term = 22 days). TUDCA treatment was provided via the drinking water throughout pregnancy (GD0-GD20; calculated dose of 150 mg/kg/day TUDCA). ER stress markers were quantified in mesenteric arteries, blood pressure was measured, pregnancy outcomes were recorded, mesenteric and main uterine arteries were isolated and vascular function was assessed by wire myography. Aged dams had increased phospho-eIF2α and CHOP expression, reduced fetal weight, reduced litter size, and impaired uterine artery relaxation. In the aged dams, TUDCA treatment reduced phospho-eIF2α and CHOP expression, reduced blood pressure, improved fetal body weight, and tended to improve uterine artery function compared to control-treated aged dams. In conclusion, our data illustrate the role of ER stress, as well as TUDCA as a potential therapeutic that may benefit pregnancy outcomes in advanced maternal age.
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Affiliation(s)
- Mazhar Pasha
- Department of Physiology, University of Alberta, Edmonton, AB T6G 2R3, Canada;
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada; (R.K.); (A.W.); (F.S.); (C.-L.M.C.)
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Raven Kirschenman
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada; (R.K.); (A.W.); (F.S.); (C.-L.M.C.)
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Amy Wooldridge
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada; (R.K.); (A.W.); (F.S.); (C.-L.M.C.)
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Floor Spaans
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada; (R.K.); (A.W.); (F.S.); (C.-L.M.C.)
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Christy-Lynn M. Cooke
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada; (R.K.); (A.W.); (F.S.); (C.-L.M.C.)
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
| | - Sandra T. Davidge
- Department of Physiology, University of Alberta, Edmonton, AB T6G 2R3, Canada;
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, AB T6G 2S2, Canada; (R.K.); (A.W.); (F.S.); (C.-L.M.C.)
- Women and Children’s Health Research Institute, University of Alberta, Edmonton, AB T6G 1C9, Canada
- Correspondence: ; Tel.: +1-780-492-1864; Fax: +1-780-492-1308
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7
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Guindolet D, Woodward AM, Gabison EE, Argüeso P. Alleviation of Endoplasmic Reticulum Stress Enhances Human Corneal Epithelial Cell Viability under Hyperosmotic Conditions. Int J Mol Sci 2022; 23:ijms23094528. [PMID: 35562919 PMCID: PMC9104051 DOI: 10.3390/ijms23094528] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 02/04/2023] Open
Abstract
Tear hyperosmolarity plays an essential role in the initiation and progression of dry-eye disease. Under a hyperosmotic environment, corneal epithelial cells experience perturbations in endoplasmic reticulum function that can lead to proinflammatory signaling and apoptosis. In this study, we investigated the effect of tauroursodeoxycholic acid (TUDCA), a chemical chaperone known to protect against endoplasmic reticulum stress, on corneal epithelial cells exposed to hyperosmotic conditions. We found that the expression of the genes involved in the activation of the unfolded protein response and the pro-apoptotic transcription factor DDIT3 were markedly upregulated in patients with Sjögren’s dry-eye disease and in a human model of corneal epithelial differentiation following treatment with hyperosmotic saline. Experiments in vitro demonstrated that TUDCA prevented hyperosmotically induced cell death by reducing nuclear DNA fragmentation and caspase-3 activation. TUDCA supplementation also led to the transcriptional repression of CXCL8 and IL5, two inflammatory mediators associated with dry-eye pathogenesis. These studies highlight the role of hyperosmotic conditions in promoting endoplasmic reticulum stress in the cornea and identify TUDCA as a potential therapeutic agent for the treatment of dry-eye disease.
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Affiliation(s)
- Damien Guindolet
- Schepens Eye Research Institute of Mass. Eye and Ear, Department of Ophthalmology, Harvard Medical School, 20 Staniford St., Boston, MA 02114, USA; (D.G.); (A.M.W.)
- Hôpital Fondation A. de Rothschild, 25 rue Manin, 75019 Paris, France;
| | - Ashley M. Woodward
- Schepens Eye Research Institute of Mass. Eye and Ear, Department of Ophthalmology, Harvard Medical School, 20 Staniford St., Boston, MA 02114, USA; (D.G.); (A.M.W.)
| | - Eric E. Gabison
- Hôpital Fondation A. de Rothschild, 25 rue Manin, 75019 Paris, France;
- UFR Médecine, Université Paris Cité, 75018 Paris, France
| | - Pablo Argüeso
- Schepens Eye Research Institute of Mass. Eye and Ear, Department of Ophthalmology, Harvard Medical School, 20 Staniford St., Boston, MA 02114, USA; (D.G.); (A.M.W.)
- Correspondence:
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Marei WFA, Leroy JLMR. Cellular Stress Responses in Oocytes: Molecular Changes and Clinical Implications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1387:171-189. [PMID: 34921349 DOI: 10.1007/5584_2021_690] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The oocyte may be exposed to several sources of stress during its growth and maturation, which may lead to reduced fertility. Unfolded protein responses (UPRs) play a central role to maintain cell survival and repair. Transcription of heat shock proteins (HSPs) is a key element to facilitate reestablishment of cellular homeostasis. Unlike somatic cells, cellular mechanisms by which oocytes can sense and respond to stress are not well described. In here, we provide an overview about the impact of cellular stress, particularly due to lipotoxicity, oxidative stress, and heat stress on oocyte developmental competence. Next, we focus on the expression of HSPs in oocytes and their potential role in UPRs in oocytes and embryos. This is based on a comprehensive shotgun proteomic analysis of mature bovine oocytes performed in our laboratory, as well as a literature review. The topic is discussed in light of our understanding of similar mechanisms in other cell types and the limited transcriptional activity in oocytes. More fundamental research is needed both at the transcriptomic and proteomic levels to further understand cell stress response mechanisms in oocytes and early developing embryos, their critical interactions, and their long-term effects. Strategies to provide targeted external support to prevent or reduce cell stress levels during oocyte maturation or early embryo development under maternal metabolic stress conditions should be developed to maximize the odds of producing good quality embryos and guarantee optimal viability.
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Affiliation(s)
- Waleed F A Marei
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium. .,Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Jo L M R Leroy
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
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9
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Yu S, Gao L, Zhang C, Wang Y, Lan H, Chu Q, Li S, Zheng X. Glycine Ameliorates Endoplasmic Reticulum Stress Induced by Thapsigargin in Porcine Oocytes. Front Cell Dev Biol 2021; 9:733860. [PMID: 34917610 PMCID: PMC8670231 DOI: 10.3389/fcell.2021.733860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/08/2021] [Indexed: 02/05/2023] Open
Abstract
The endoplasmic reticulum (ER) is a multifunctional organelle in the cytoplasm that plays important roles in female mammalian reproduction. The endoplasmic reticulum and mitochondria interact to maintain the normal function of cells by maintaining intracellular calcium homeostasis. As proven by previous research, glycine (Gly) can regulate the intracellular free calcium concentration ([Ca2+]i) and enhance mitochondrial function to improve oocyte maturation in vitro. The effect of Gly on ER function during oocyte in vitro maturation (IVM) is not clear. In this study, we induced an ER stress model with thapsigargin (TG) to explore whether Gly can reverse the ER stress induced by TG treatment and whether it is associated with calcium regulation. The results showed that the addition of Gly could improve the decrease in the average cumulus diameter, the first polar body excretion rate caused by TG-induced ER stress, the cleavage rate and the blastocyst rate. Gly supplementation could reduce the ER stress induced by TG by significantly improving the ER levels and significantly downregulating the expression of genes related to ER stress (Xbp1, ATF4, and ATF6). Moreover, Gly also significantly alleviated the increase in reactive oxygen species (ROS) levels and the decrease in mitochondrial membrane potential (ΔΨ m) to improve mitochondrial function in porcine oocytes exposed to TG. Furthermore, Gly reduced the [Ca2+]i and mitochondrial Ca2+ ([Ca2+]m) levels and restored the ER Ca2+ ([Ca2+]ER) levels in TG-exposed porcine oocytes. Moreover, we found that the increase in [Ca2+]i may be caused by changes in the distribution and expression of inositol 1,4,5-triphosphate receptor (IP3R1) and voltage-dependent anion channel 1 (VDAC1), while Gly can restore the distribution and expression of IP3R1 and VDAC1 to normal levels. Apoptosis-related indexes (Caspase 3 activity and Annexin-V) and gene expression Bax, Cyto C, and Caspase 3) were significantly increased in the TG group, but they could be restored by adding Gly. Our results suggest that Gly can ameliorate ER stress and apoptosis in TG-exposed porcine oocytes and can further enhance the developmental potential of porcine oocytes in vitro.
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Affiliation(s)
- Sicong Yu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Lepeng Gao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Chang Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Yumeng Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Hainan Lan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Qianran Chu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Suo Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Xin Zheng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
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10
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Soto-Moreno EJ, Balboula A, Spinka C, Rivera RM. Serum supplementation during bovine embryo culture affects their development and proliferation through macroautophagy and endoplasmic reticulum stress regulation. PLoS One 2021; 16:e0260123. [PMID: 34882691 PMCID: PMC8659681 DOI: 10.1371/journal.pone.0260123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 11/02/2021] [Indexed: 11/18/2022] Open
Abstract
Serum supplementation during bovine embryo culture has been demonstrated to promote cell proliferation and preimplantation embryo development. However, these desirable outcomes, have been associated with gene expression alterations of pathways involved in macroautophagy, growth, and development at the blastocyst stage, as well as with developmental anomalies such as fetal overgrowth and placental malformations. In order to start dissecting the molecular pathways by which serum supplementation of the culture medium during the preimplantation stage promotes developmental abnormalities, we examined blastocyst morphometry, inner cell mass and trophectoderm cell allocations, macroautophagy, and endoplasmic reticulum stress. On day 5 post-insemination, > 16 cells embryos were selected and cultured in medium containing 10% serum or left as controls. Embryo diameter, inner cell mass and trophectoderm cell number, and macroautophagy were measured on day 8 blastocysts (BL) and expanded blastocysts (XBL). On day 5 and day 8, we assessed transcript level of the ER stress markers HSPA5, ATF4, MTHFD2, and SHMT2 as well as XBP1 splicing (a marker of the unfolded protein response). Serum increased diameter and proliferation of embryos when compared to the no-serum group. In addition, serum increased macroautophagy of BL when compared to controls, while the opposite was true for XBL. None of the genes analyzed was differentially expressed at any stage, except that serum decreased HSPA5 in day 5 > 16 cells stage embryos. XBP1 splicing was decreased in BL when compared to XBL, but only in the serum group. Our data suggest that serum rescues delayed embryos by alleviating endoplasmic reticulum stress and promotes development of advanced embryos by decreasing macroautophagy.
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Affiliation(s)
- Edgar Joel Soto-Moreno
- Division of Animal Sciences, University of Missouri, Columbia, MO, United States of America
| | - Ahmed Balboula
- Division of Animal Sciences, University of Missouri, Columbia, MO, United States of America
| | - Christine Spinka
- College of Agriculture, Food and Natural Resources, University of Missouri, Columbia, MO, United States of America
| | - Rocío Melissa Rivera
- Division of Animal Sciences, University of Missouri, Columbia, MO, United States of America
- * E-mail:
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11
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Fu B, Ma H, Zhang DJ, Wang L, Li ZQ, Guo ZH, Liu ZG, Wu SH, Meng XR, Wang F, Chen WG, Liu D. Porcine oviductal extracellular vesicles facilitate early embryonic development via relief of endoplasmic reticulum stress. Cell Biol Int 2021; 46:300-310. [PMID: 34854517 DOI: 10.1002/cbin.11730] [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: 07/24/2021] [Revised: 11/02/2021] [Accepted: 11/28/2021] [Indexed: 11/06/2022]
Abstract
The key to successful in vitro embryo production (IVEP) is to mimic the natural in vivo oviductal microenvironment. Although the chemically defined media in extensive use for the in vitro culture of mammalian embryos is based on the composition of oviductal fluid, the IVEP systems in current use must still bypass the oviduct to produce embryos in vitro. Extracellular vesicles (EVs) in the oviduct are versatile intercellular delivery vehicles for maternal-embryo communication, and a lack of them can be associated with failed early embryonic development under in vitro culture conditions. Herein, we isolated EVs from porcine oviduct fluid and confirmed that oviductal EV supplementation improves the embryonic development of parthenogenetically activated (PA) embryos in terms of blastocyst formation rates and total cell numbers. Our experiments also revealed that a beneficial effect of oviductal EVs on PA embryos was achievable, at least in part, by relieving endoplasmic reticulum stress. These results suggest that the maternal-embryo communication mediated by oviductal EVs benefits early embryonic development. Given the contribution of oviductal EVs to early embryonic development, these findings offer novel insights for the optimization of current IVEP systems.
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Affiliation(s)
- Bo Fu
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Hong Ma
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Dong-Jie Zhang
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Liang Wang
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Zhong-Qiu Li
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Zhen-Hua Guo
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Zi-Guang Liu
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Sai-Hui Wu
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Xiang-Ren Meng
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Fang Wang
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
| | - Wen-Gui Chen
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Di Liu
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China.,Key Laboratory of Combining Farming and Animal Husbandry, Ministry of Agriculture and Rural Affairs, Harbin, China
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12
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Redox Regulation and Oxidative Stress in Mammalian Oocytes and Embryos Developed In Vivo and In Vitro. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111374. [PMID: 34769890 PMCID: PMC8583213 DOI: 10.3390/ijerph182111374] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/25/2021] [Accepted: 10/25/2021] [Indexed: 12/18/2022]
Abstract
Oocytes and preimplantation embryos require careful regulation of the redox environment for optimal development both in vivo and in vitro. Reactive oxygen species (ROS) are generated throughout development as a result of cellular metabolism and enzyme reactions. ROS production can result in (i) oxidative eustress, where ROS are helpful signalling molecules with beneficial physiological functions and where the redox state of the cell is maintained within homeostatic range by a closely coupled system of antioxidants and antioxidant enzymes, or (ii) oxidative distress, where excess ROS are deleterious and impair normal cellular function. in vitro culture of embryos exacerbates ROS production due to a range of issues including culture-medium composition and laboratory culture conditions. This increase in ROS can be detrimental not only to assisted reproductive success rates but can also result in epigenetic and genetic changes in the embryo, resulting in transgenerational effects. This review examines the effects of oxidative stress in the oocyte and preimplantation embryo in both the in vivo and in vitro environment, identifies mechanisms responsible for oxidative stress in the oocyte/embryo in culture and approaches to reduce these problems, and briefly examines the potential impacts on future generations.
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13
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Currin L, Baldassarre H, Bordignon V. In Vitro Production of Embryos from Prepubertal Holstein Cattle and Mediterranean Water Buffalo: Problems, Progress and Potential. Animals (Basel) 2021; 11:2275. [PMID: 34438733 PMCID: PMC8388507 DOI: 10.3390/ani11082275] [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: 07/01/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 01/21/2023] Open
Abstract
Laparoscopic ovum pick-up (LOPU) coupled with in vitro embryo production (IVEP) in prepubertal cattle and buffalo accelerates genetic gain. This article reviews LOPU-IVEP technology in prepubertal Holstein Cattle and Mediterranean Water Buffalo. The recent expansion of genomic-assisted selection has renewed interest and demand for prepubertal LOPU-IVEP schemes; however, low blastocyst development rates has constrained its widespread implementation. Here, we present an overview of the current state of the technology, limitations that persist and suggest possible solutions to improve its efficiency, with a focus on gonadotropin stimulations strategies to prime oocytes prior to follicular aspiration, and IVEP procedures promoting growth factor metabolism and limiting oxidative and endoplasmic reticulum stress.
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Affiliation(s)
| | | | - Vilceu Bordignon
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada; (L.C.); (H.B.)
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14
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Dicks N, Gutierrez K, Currin L, de Macedo MP, Glanzner WG, Mondadori RG, Michalak M, Agellon LB, Bordignon V. Tauroursodeoxycholic acid/TGR5 signaling promotes survival and early development of glucose-stressed porcine embryos†. Biol Reprod 2021; 105:76-86. [PMID: 33889948 PMCID: PMC8256098 DOI: 10.1093/biolre/ioab072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/24/2021] [Accepted: 04/12/2021] [Indexed: 01/21/2023] Open
Abstract
Conditions of impaired energy and nutrient homeostasis, such as diabetes and obesity, are associated with infertility. Hyperglycemia increases endoplasmic reticulum stress as well as oxidative stress and reduces embryo development and quality. Oxidative stress also causes deoxyribonucleic acid damage, which impairs embryo quality and development. The natural bile acid tauroursodeoxycholic acid reduces endoplasmic reticulum stress and rescues developmentally incompetent late-cleaving embryos, as well as embryos subjected to nuclear stress, suggesting the endoplasmic reticulum stress response, or unfolded protein response, and the genome damage response are linked. Tauroursodeoxycholic acid acts via the Takeda-G-protein-receptor-5 to alleviate nuclear stress in embryos. To evaluate the role of tauroursodeoxycholic acid/Takeda-G-protein-receptor-5 signaling in embryo unfolded protein response, we used a model of glucose-induced endoplasmic reticulum stress. Embryo development was impaired by direct injection of tauroursodeoxycholic acid into parthenogenetically activated oocytes, whereas it was improved when tauroursodeoxycholic acid was added to the culture medium. Attenuation of the Takeda-G-protein-receptor-5 precluded the positive effect of tauroursodeoxycholic acid supplementation on development of parthenogenetically activated and fertilized embryos cultured under standard conditions and parthenogenetically activated embryos cultured with excess glucose. Moreover, attenuation of tauroursodeoxycholic acid/Takeda-G-protein-receptor-5 signaling induced endoplasmic reticulum stress, oxidative stress and cell survival genes, but decreased expression of pluripotency genes in parthenogenetically activated embryos cultured under excess glucose conditions. These data suggest that Takeda-G-protein-receptor-5 signaling pathways link the unfolded protein response and genome damage response. Furthermore, this study identifies Takeda-G-protein-receptor-5 signaling as a potential target for mitigating fertility issues caused by nutrient excess-associated blastomere stress and embryo death.
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Affiliation(s)
- Naomi Dicks
- Department of Animal Science, McGill University, Quebec, Canada
| | | | - Luke Currin
- Department of Animal Science, McGill University, Quebec, Canada
| | | | | | - Rafael G Mondadori
- Department of Animal Science, McGill University, Quebec, Canada
- ReproPel, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Marek Michalak
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Luis B Agellon
- School of Human Nutrition, McGill University, Quebec, Canada
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15
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Liu Y, He QK, Xu ZR, Xu CL, Zhao SC, Luo YS, Sun X, Qi ZQ, Wang HL. Thiamethoxam Exposure Induces Endoplasmic Reticulum Stress and Affects Ovarian Function and Oocyte Development in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:1942-1952. [PMID: 33533595 DOI: 10.1021/acs.jafc.0c06340] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Neonicotinoids are the most widely used insecticides in modern agriculture, and their residues have been found in the environment and food. Previous studies reported that neonicotinoids exert toxic effects in various tissues, but whether they interfered with the female reproductive process remains unknown. In our present research, thiamethoxam was selected as a representative neonicotinoid to establish a mouse toxicity model with gavage. We found that thiamethoxam decreased the ovarian coefficient and disrupted the expression of female hormone receptors, subsequently affecting follicle development. Ovarian granulosa cells from the thiamethoxam exposure group underwent a high level of apoptosis. Using transcriptome analysis, we showed that thiamethoxam exposure altered the expression of multiple oocyte genes related to inflammation, apoptosis, and endoplasmic reticulum stress. Thiamethoxam also adversely affected oocyte and embryo development. Western blotting and fluorescence staining results confirmed that thiamethoxam affected the integrity of DNA, triggered apoptosis, promoted oxidative stress and endoplasmic reticulum stress, and impaired mitochondrial function. Collectively, our results indicated that thiamethoxam exposure disrupts ovarian homeostasis and decreases oocyte quality via endoplasmic reticulum stress and apoptosis induction.
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Affiliation(s)
- Yu Liu
- Medical College, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Quan-Kuo He
- Medical College, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Zhi-Ran Xu
- Center for Translational Medicine Research, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning, Guangxi 530011, People's Republic of China
| | - Chang-Long Xu
- Reproductive Medical Center of Nanning Second People's Hospital, Nanning, Guangxi 530031, People's Republic of China
| | - Si-Cheng Zhao
- Medical College, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Yu-Shen Luo
- Medical College, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Xue Sun
- Medical College, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Zhong-Quan Qi
- Medical College, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Hai-Long Wang
- Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian 361102, People's Republic of China
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16
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Ridlo MR, Kim EH, Taweechaipaisankul A, Lee BC, Kim GA. Adiponectin Improves In Vitro Development of Cloned Porcine Embryos by Reducing Endoplasmic Reticulum Stress and Apoptosis. Animals (Basel) 2021; 11:ani11020473. [PMID: 33579003 PMCID: PMC7916767 DOI: 10.3390/ani11020473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/31/2021] [Accepted: 02/06/2021] [Indexed: 01/12/2023] Open
Abstract
Simple Summary Successful attenuation of endoplasmic reticulum (ER) stress signaling has a beneficial outcome in in vitro embryonal improvement. We evaluated the effect of adiponectin during in vitro culture in porcine embryos derived from parthenogenetic activation and somatic cell nuclear transfer (SCNT). We found that 15 and 30 μg/mL adiponectin treatment significantly improved cleavage rates, blastocyst formation rates, and total cell number (TCN) of blastocysts derived from parthenogenetic activation and reduced the expression levels of XBP1. In SCNT embryos, the cleavage rate, blastocyst formation rate, and TCN of blastocysts were significantly improved by 15 μg/mL adiponectin treatment compared to the control. In addition, the 15 μg/mL adiponectin treatment reduced the levels of XBP1 expression and ER stress-related genes, increased expression levels of pluripotency-related genes, and decreased apoptosis-related gene expression. Comprehensively, treatment with 15 μg/mL adiponectin enhanced the in vitro developmental capacity of early-stage SCNT porcine embryos by reducing ER stress and apoptosis. Abstract The main factor of embryonic demise is endoplasmic reticulum (ER) stress. Successful attenuation of ER stress results in an improvement in embryo development. We studied the impact of adiponectin in the in vitro culture (IVC) of porcine embryos derived from parthenogenetic activation and somatic cell nuclear transfer (SCNT). The first experiment revealed that 15 and 30 μg/mL adiponectin treatments improved cleavage, blastocyst rates, and total cell number (TCN) of parthenogenetic embryos and reduced the expression of XBP1 compared to the 5 μg/mL adiponectin treatment and control groups (p < 0.05). The second experiment showed that cleavage rate, blastocyst formation rate, and TCN of blastocysts were improved in the 15 μg/mL adiponectin treatment group compared with the control group, with significantly reduced XBP1 expression in ≥4-cell stage SCNT embryos and blastocysts (p < 0.05). Treatment with 15 μg/mL adiponectin significantly improved the expression of XBP1 and reduced the expression of ER stress-related genes (uXBP1, sXBP1, PTPN1, and ATF4), increased the expression levels of pluripotency-related genes (Nanog and SOX2), and decreased apoptosis-related gene expression (Caspase-3). These results suggest that 15 μg/mL adiponectin enhanced the in vitro developmental capacity of early-stage SCNT porcine embryos by reducing ER stress and apoptosis.
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Affiliation(s)
- Muhammad Rosyid Ridlo
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
- Department of Bioresources Technology and Veterinary, Vocational College, Universitas Gadjah Mada, Yogyakarta 5281, Indonesia
| | - Eui Hyun Kim
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
| | - Anukul Taweechaipaisankul
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
| | - Geon A. Kim
- Department of Biomedical Laboratory Science, School of Medicine, Eulji University, Daejon 34824, Korea
- Correspondence:
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17
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Harada M, Takahashi N, Azhary JM, Kunitomi C, Fujii T, Osuga Y. Endoplasmic reticulum stress: a key regulator of the follicular microenvironment in the ovary. Mol Hum Reprod 2021; 27:gaaa088. [PMID: 33543293 DOI: 10.1093/molehr/gaaa088] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 12/04/2020] [Indexed: 12/17/2022] Open
Abstract
Intra-ovarian local factors regulate the follicular microenvironment in coordination with gonadotrophins, thus playing a crucial role in ovarian physiology as well as pathological states such as polycystic ovary syndrome (PCOS). One recently recognized local factor is endoplasmic reticulum (ER) stress, which involves the accumulation of unfolded or misfolded proteins in the ER related to various physiological and pathological conditions that increase the demand for protein folding or attenuate the protein-folding capacity of the organelle. ER stress results in activation of several signal transduction cascades, collectively termed the unfolded protein response (UPR), which affect a wide variety of cellular functions. Recent studies have revealed diverse roles of ER stress in physiological and pathological conditions in the ovary. In this review, we summarize the most current knowledge of the regulatory roles of ER stress in the ovary, in the context of reproduction. The physiological roles of ER stress and the UPR in the ovary remain largely undetermined. On the contrary, activation of ER stress is known to impair follicular and oocyte health in various pathological conditions; moreover, ER stress also contributes to the pathogenesis of several ovarian diseases, including PCOS. Finally, we discuss the potential of ER stress as a novel therapeutic target. Inhibition of ER stress or UPR activation, by treatment with existing chemical chaperones, lifestyle intervention, or the development of small molecules that target the UPR, represents a promising therapeutic strategy.
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Affiliation(s)
- Miyuki Harada
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Nozomi Takahashi
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Jerilee Mk Azhary
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Chisato Kunitomi
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8655, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8655, Japan
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18
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Yap KN, Yamada K, Zikeli S, Kiaris H, Hood WR. Evaluating endoplasmic reticulum stress and unfolded protein response through the lens of ecology and evolution. Biol Rev Camb Philos Soc 2020; 96:541-556. [PMID: 33164297 DOI: 10.1111/brv.12667] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/13/2020] [Accepted: 10/28/2020] [Indexed: 12/11/2022]
Abstract
Considerable progress has been made in understanding the physiological basis for variation in the life-history patterns of animals, particularly with regard to the roles of oxidative stress and hormonal regulation. However, an underappreciated and understudied area that could play a role in mediating inter- and intraspecific variation of life history is endoplasmic reticulum (ER) stress, and the resulting unfolded protein response (UPRER ). ER stress response and the UPRER maintain proteostasis in cells by reducing the intracellular load of secretory proteins and enhancing protein folding capacity or initiating apoptosis in cells that cannot recover. Proper modulation of the ER stress response and execution of the UPRER allow animals to respond to intracellular and extracellular stressors and adapt to constantly changing environments. ER stress responses are heritable and there is considerable individual variation in UPRER phenotype in animals, suggesting that ER stress and UPRER phenotype can be subjected to natural selection. The variation in UPRER phenotype presumably reflects the way animals respond to ER stress and environmental challenges. Most of what we know about ER stress and the UPRER in animals has either come from biomedical studies using cell culture or from experiments involving conventional laboratory or agriculturally important models that exhibit limited genetic diversity. Furthermore, these studies involve the assessment of experimentally induced qualitative changes in gene expression as opposed to the quantitative variations that occur in naturally existing populations. Almost all of these studies were conducted in controlled settings that are often quite different from the conditions animals experience in nature. Herein, we review studies that investigated ER stress and the UPRER in relation to key life-history traits including growth and development, reproduction, bioenergetics and physical performance, and ageing and senescence. We then ask if these studies can inform us about the role of ER stress and the UPRER in mediating the aforementioned life-history traits in free-living animals. We propose that there is a need to conduct experiments pertaining to ER stress and the UPRER in ecologically relevant settings, to characterize variation in ER stress and the UPRER in free-living animals, and to relate the observed variation to key life-history traits. We urge others to integrate multiple physiological systems and investigate how interactions between ER stress and oxidative stress shape life-history trade-offs in free-living animals.
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Affiliation(s)
- Kang Nian Yap
- Department of Biological Sciences, Auburn University, 101 Rouse Life Science Building, Auburn, AL, 36849, U.S.A
| | - KayLene Yamada
- Department of Biological Sciences, Auburn University, 101 Rouse Life Science Building, Auburn, AL, 36849, U.S.A
| | - Shelby Zikeli
- Department of Biological Sciences, Auburn University, 101 Rouse Life Science Building, Auburn, AL, 36849, U.S.A
| | - Hippokratis Kiaris
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, and Peromyscus Genetic Stock Center, University of South Carolina, Columbia, SC, 29208, U.S.A
| | - Wendy R Hood
- Department of Biological Sciences, Auburn University, 101 Rouse Life Science Building, Auburn, AL, 36849, U.S.A
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19
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Ridlo MR, Kim GA, Taweechaipaisankul A, Kim EH, Lee BC. Zinc supplementation alleviates endoplasmic reticulum stress during porcine oocyte in vitro maturation by upregulating zinc transporters. J Cell Physiol 2020; 236:2869-2880. [PMID: 32944961 DOI: 10.1002/jcp.30052] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/29/2020] [Accepted: 09/02/2020] [Indexed: 01/16/2023]
Abstract
Endoplasmic reticulum (ER) stress is a major contributor to embryonic development failure. Mammalian oocytes have a high risk of exposure to cellular stress during in vitro embryo production. We investigated the effects of zinc supplementation during in vitro maturation under ER stress. We evaluated cumulus expansion, embryonic development derived by parthenogenetic activation, reactive oxygen species, protein expression of X-box binding protein 1 (XBP1), and expression of genes related to ER stress. Supplementation with 1 μg/ml zinc significantly increased the nuclear maturation of oocytes, cleavage and blastocyst formation rates, and total blastocyst cell number (p < .05). Under ER stress, zinc significantly reduced protein expression of XBP1, and increased cleavage and blastocyst rates (p < .05). Concomitantly, zinc supplementation upregulated the expression of zinc transporters (SLC39A14 and SLC39A10), PTGS2, and downregulated ER stress-related genes (sXBP1, uXBP1, ATF4, and PTPN1/PTP1B), and caspase 3. These results suggest that zinc supplementation alleviates ER stress by providing essential metal-ion transporters for oocyte maturation and subsequent embryonic development.
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Affiliation(s)
- Muhammad Rosyid Ridlo
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.,Department of Bioresources Technology and Veterinary, Vocational College, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Geon A Kim
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.,Department of Biomedical Laboratory Science, School of Medicine, Eulji University, Daejon, Republic of Korea
| | - Anukul Taweechaipaisankul
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Eui Hyun Kim
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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20
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Counteracting Cisplatin-Induced Testicular Damages by Natural Polyphenol Constituent Honokiol. Antioxidants (Basel) 2020; 9:antiox9080723. [PMID: 32784851 PMCID: PMC7464045 DOI: 10.3390/antiox9080723] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 12/11/2022] Open
Abstract
Cisplatin, despite its anti-cancer ability, exhibits severe testicular toxicities when applied systemically. Due to its wide application in cancer treatment, reduction of its damages to normal tissue is an imminent clinical need. Here we evaluated the effects of honokiol, a natural lipophilic polyphenol compound, on cisplatin-induced testicular injury. We showed in-vitro and in-vivo that nanosome-encapsulated honokiol attenuated cisplatin-induced DNA oxidative stress by suppressing intracellular reactive oxygen species production and elevating gene expressions of mitochondrial antioxidation enzymes. Nanosome honokiol also mitigated endoplasmic reticulum stress through down regulation of Bip-ATF4-CHOP signaling pathway. Additionally, this natural polyphenol compound diminished cisplatin-induced DNA breaks and cellular apoptosis. The reduced type I collagen accumulation in the testis likely attributed from inhibition of TGFβ1, αSMA and ER protein TXNDC5 protein expression. The combinatorial beneficial effects better preserve spermatogenic layers and facilitate repopulation of sperm cells. Our study renders opportunity for re-introducing cisplatin to systemic anti-cancer therapy with reduced testicular toxicity and restored fertility.
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Oleic Acid Counters Impaired Blastocyst Development Induced by Palmitic Acid During Mouse Preimplantation Development: Understanding Obesity-Related Declines in Fertility. Reprod Sci 2020; 27:2038-2051. [PMID: 32542540 PMCID: PMC7522107 DOI: 10.1007/s43032-020-00223-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 05/25/2020] [Indexed: 01/07/2023]
Abstract
Obesity is associated with altered fatty acid profiles, reduced fertility, and assisted reproductive technology (ART) success. The effects of palmitic acid (PA), oleic acid (OA), and their combination on mouse preimplantation development, endoplasmic reticulum (ER) stress pathway gene expression, lipid droplet formation, and mitochondrial reactive oxygen species (ROS) were characterized. Two-cell stage mouse embryos collected from superovulated and mated CD1 females were placed into culture with KSOMaa medium, or PA alone or in combination with OA for 46 h. PA significantly reduced blastocyst development in a concentration-dependent manner, which was prevented by co-treatment with OA. PA and OA levels in mouse reproductive tracts were assessed by liquid chromatography coupled to mass spectrometry (LC-MS). LC-MS indicated higher concentrations of PA in the mouse oviduct than the uterus. Transcript analysis revealed that PA alone groups had increased ER stress pathway (ATF3, CHOP, and XBP1 splicing) mRNAs, which was alleviated by OA co-treatment. OA co-treatment significantly increased lipid droplet accumulation and significantly decreased mitochondrial ROS from PA treatment alone. PA treatment for only 24 h significantly reduced its impact on blastocyst development from the 2-cell stage. Thus, PA affects ER stress pathway gene expression, lipid droplet accumulation, and mitochondrial ROS in treated preimplantation embryos. These mechanisms may serve to offset free fatty acid exposure effects on preimplantation development, but their protective ability may be overwhelmed by elevated PA.
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Takehara I, Igarashi H, Kawagoe J, Matsuo K, Takahashi K, Nishi M, Nagase S. Impact of endoplasmic reticulum stress on oocyte aging mechanisms. Mol Hum Reprod 2020; 26:567-575. [DOI: 10.1093/molehr/gaaa040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 05/06/2020] [Indexed: 12/13/2022] Open
Abstract
Abstract
Endoplasmic reticulum (ER) stress is associated with several aging-related diseases; however, the mechanism underlying age-related deterioration of oocyte quality is unclear. Here, we used post-ovulatory, in vivo aged mouse oocytes as a model. Super-ovulated oocytes harvested from the oviduct at 14 h and 20 h post-hCG injection were designated as ‘fresh’ and ‘aged’, respectively. Embryo development following IVF was compared between fresh, aged and ER stress-induced oocytes. Expression of the ER stress marker GRP78 was examined at each stage. To evaluate the effect of salubrinal, an ER stress suppressor, on embryo development following IVF, expression levels of GRP78 and phospho-eukaryotic initiation factor 2 alpha were compared between aged and salubrinal-treated aged oocytes. Embryo transfer of salubrinal-treated aged oocytes was performed to examine the safety of salubrinal. Similar to aged oocytes, ER stress-induced oocytes showed lower fertilization rates and poor embryo development. Following IVF, expression of GRP78 decreased with embryo development. GRP78 expression was significantly higher in aged oocytes than in fresh oocytes. Salubrinal lowered GRP78 levels and improved embryo development. No adverse effect of salubrinal treatment was found on the birth weight of pups or on organogenesis in mice. The limitation of this study was that protein kinase-like ER kinase was the only ER stress pathway examined; the role of IRE1 and ATF6 pathways was not considered. Nevertheless, salubrinal can significantly improve embryo development in in vivo aged oocytes undergoing ER stress. Hence, regulation of ER stress might represent a promising therapeutic strategy to overcome poor oocyte quality.
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Affiliation(s)
- Isao Takehara
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
| | - Hideki Igarashi
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
- Kyono ART Clinic Sendai, 1-1-1 3F, Honcho, Aoba-ku, Sendai, Miyagi 980-0014, Japan
| | - Jun Kawagoe
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
| | - Koki Matsuo
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
| | - Kyoko Takahashi
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
| | - Michi Nishi
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
| | - Satoru Nagase
- Department of Obstetrics and Gynecology, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan
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Rosàs-Canyelles E, Modzelewski AJ, Geldert A, He L, Herr AE. Assessing heterogeneity among single embryos and single blastomeres using open microfluidic design. SCIENCE ADVANCES 2020; 6:eaay1751. [PMID: 32494630 PMCID: PMC7176412 DOI: 10.1126/sciadv.aay1751] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 01/28/2020] [Indexed: 05/13/2023]
Abstract
The process by which a zygote develops from a single cell into a multicellular organism is poorly understood. Advances are hindered by detection specificity and sensitivity limitations of single-cell protein tools and by challenges in integrating multimodal data. We introduce an open microfluidic tool expressly designed for same-cell phenotypic, protein, and mRNA profiling. We examine difficult-to-study-yet critically important-murine preimplantation embryo stages. In blastomeres dissociated from less well-studied two-cell embryos, we observe no significant GADD45a protein expression heterogeneity, apparent at the four-cell stage. In oocytes, we detect differences in full-length versus truncated DICER-1 mRNA and protein, which are insignificant by the two-cell stage. Single-embryo analyses reveal intraembryonic heterogeneity, differences between embryos of the same fertilization event and between donors, and reductions in the burden of animal sacrifice. Open microfluidic design integrates with existing workflows and opens new avenues for assessing the cellular-to-molecular heterogeneity inherent to preimplantation embryo development.
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Affiliation(s)
- Elisabet Rosàs-Canyelles
- Department of Bioengineering, University of California Berkeley, Berkeley, CA 94720, USA
- The University of California Berkeley and University of California San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
| | - Andrew J. Modzelewski
- Division of Cellular and Developmental Biology, Department of Molecular & Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Alisha Geldert
- Department of Bioengineering, University of California Berkeley, Berkeley, CA 94720, USA
- The University of California Berkeley and University of California San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
| | - Lin He
- Division of Cellular and Developmental Biology, Department of Molecular & Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Amy E. Herr
- Department of Bioengineering, University of California Berkeley, Berkeley, CA 94720, USA
- The University of California Berkeley and University of California San Francisco Graduate Program in Bioengineering, Berkeley, CA 94720, USA
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Park HB, Park YR, Kim MJ, Jung BD, Park CK, Cheong HT. Endoplasmic Reticulum (ER) Stress Inhibitor or Antioxidant Treatments during Micromanipulation Can Inhibit Both ER and Oxidative Stresses in Porcine SCNT Embryos. Dev Reprod 2020; 24:31-41. [PMID: 32411916 PMCID: PMC7201064 DOI: 10.12717/dr.2020.24.1.31] [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: 01/09/2020] [Revised: 01/17/2020] [Accepted: 02/01/2020] [Indexed: 12/21/2022]
Abstract
We investigated the effects of endoplasmic reticulum (ER) stress inhibitor and
antioxidant treatments during the micromanipulation of somatic cell nuclear
transfer (SCNT) on in vitro development of SCNT embryos.
Tauroursodeoxycholic acid (TUDCA), an ER stress inhibitor and vitamin C (Vit.
C), an antioxidant, were treated by alone or in combination, then, the level of
X-box binding protein 1 (Xbp1) splicing and the expressions of
ER stress-associated genes, oxidative stress-related genes, and apoptotic genes
were confirmed in the 1-cell and blastocyst stages. In the 1-cell stage, the
levels of Xbp1 splicing were significantly decreased in TUDCA
and Vit. C treatment groups compared to the control
(p<0.05). In addition, the expression levels of most ER
stress-associated genes and oxidative stress-related genes were significantly
lower in all treatment groups than the control (p<0.05),
and the transcript levels of apoptotic genes were also significantly lower in
all treatment groups than the control (p<0.05). In the
blastocyst stage, decreased expression of ER stress-, oxidative stress-, and
apoptosis-related genes were observed only in some treatments. However, the
blastocyst formation rates in TUDCA and Vit. C treatment groups (24.8%
and 22.0%, respectively) and mean blastocyst cell number in all treatment
groups (59.7±4.3 to 63.5±3.3) were significantly higher
(p<0.05) than those of control. The results showed
that the TUDCA or Vit. C treatment during micromanipulation inhibited both ER
and oxidative stresses in the early stage of SCNT embryos, thereby reducing cell
damage and promoting in vitro development.
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Affiliation(s)
- Hye-Bin Park
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Yeo-Reum Park
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Mi-Jeong Kim
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Bae-Dong Jung
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Choon-Keun Park
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Hee-Tae Cheong
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
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25
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Alves GP, Cordeiro FB, Bruna de Lima C, Annes K, Cristina Dos Santos É, Ispada J, Fontes PK, Nogueira MFG, Nichi M, Milazzotto MP. Follicular environment as a predictive tool for embryo development and kinetics in cattle. Reprod Fertil Dev 2019; 31:451-461. [PMID: 30301510 DOI: 10.1071/rd18143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 08/15/2018] [Indexed: 12/19/2022] Open
Abstract
Follicular fluid composition and the transcription pattern of granulosa cells were analysed to better comprehend associations between embryo development and morphokinetics. Bovine follicles were punctured and their respective follicular fluid and granulosa cells were collected. Cumulus-oocyte complexes derived from these follicles were matured and fertilised invitro. Embryo morphology and kinetics were evaluated at 40h after insemination, when embryos were classified as fast (FCL, four or more cells), slow (SCL, 2-3 cells) or non-cleaved (NCL). Their development was followed until the blastocyst stage. Glucose, pyruvate, cholesterol and oestradiol were quantified in the follicular fluid and the transcription pattern of 96 target genes was evaluated in granulosa cells by large-scale quantitative reverse transcription polymerase chain reaction. Follicular fluid from the blastocyst group had increased levels of glucose, total cholesterol and pyruvate compared to the non-blastocyst group, whereas higher levels of oestradiol were observed in the follicular fluid of embryos and blastocysts with fast cleavage. The transcriptional pattern revealed altered metabolic pathways between groups, such as lipid metabolism, cellular stress and cell signalling. In conclusion, both follicular fluid and granulosa cells are associated with the possibility of identifying follicles that may generate embryos with high potential to properly develop to the blastocyst stage.
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Affiliation(s)
- Gláucia Pereira Alves
- Laboratory of Cellular and Molecular Biology, Centre of Natural Sciences and Humanities, Federal University of ABC, Av dos Estados, 5005, CEP 09210190, Santo André, SP, Brazil
| | - Fernanda Bertuccez Cordeiro
- Laboratorio para Investigaciones Biomédicas, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Camila Bruna de Lima
- Laboratory of Cellular and Molecular Biology, Centre of Natural Sciences and Humanities, Federal University of ABC, Av dos Estados, 5005, CEP 09210190, Santo André, SP, Brazil
| | - Kelly Annes
- Laboratory of Cellular and Molecular Biology, Centre of Natural Sciences and Humanities, Federal University of ABC, Av dos Estados, 5005, CEP 09210190, Santo André, SP, Brazil
| | - Érika Cristina Dos Santos
- Laboratory of Cellular and Molecular Biology, Centre of Natural Sciences and Humanities, Federal University of ABC, Av dos Estados, 5005, CEP 09210190, Santo André, SP, Brazil
| | - Jéssica Ispada
- Laboratory of Cellular and Molecular Biology, Centre of Natural Sciences and Humanities, Federal University of ABC, Av dos Estados, 5005, CEP 09210190, Santo André, SP, Brazil
| | - Patrícia Kubo Fontes
- Institute of Biosciences, Universidade Estadual Paulista (UNESP), Campus Botucatu, São Paulo, Brazil
| | - Marcelo Fabio Gouveia Nogueira
- Department of Biological Sciences, School of Sciences and Languages, Universidade Estadual Paulista (UNESP), Campus Assis, Assis, São Paulo, Brazil
| | - Marcílio Nichi
- Department of Animal Reproduction, Faculty of Veterinary Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Marcella Pecora Milazzotto
- Laboratory of Cellular and Molecular Biology, Centre of Natural Sciences and Humanities, Federal University of ABC, Av dos Estados, 5005, CEP 09210190, Santo André, SP, Brazil
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26
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Dicks N, Gutierrez K, Currin L, Priotto de Macedo M, Glanzner W, Michalak M, Agellon LB, Bordignon V. Tauroursodeoxycholic acid acts via TGR5 receptor to facilitate DNA damage repair and improve early porcine embryo development. Mol Reprod Dev 2019; 87:161-173. [PMID: 31793725 DOI: 10.1002/mrd.23305] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 11/22/2019] [Indexed: 01/23/2023]
Abstract
DNA damage associated with assisted reproductive technologies is an important factor affecting gamete fertility and embryo development. Activation of the TGR5 receptor by tauroursodeoxycholic acid (TUDCA) has been shown to reduce endoplasmic reticulum (ER) stress in embryos; however, its effect on genome damage responses (GDR) activation to facilitate DNA damage repair has not been examined. This study aimed to investigate the effect of TUDCA on DNA damage repair and embryo development. In a porcine model of ultraviolet light (UV)-induced nuclear stress, TUDCA reduced DNA damage and ER stress in developing embryos, as measured by γH2AX and glucose-regulated protein 78 immunofluorescence, respectively. TUDCA was equally able to rescue early embryo development. No difference in total cell number, DNA damage, or percentage of apoptotic cells, measured by cleaved caspase 3 immunofluorescence, was noted in embryos that reached the blastocyst stage. Interestingly, Dicer-substrate short interfering RNA-mediated disruption of TGR5 signaling abrogated the beneficial effects of TUDCA on UV-treated embryos. Quantitative PCR analysis revealed activation of the GDR, through increased messenger RNA abundance of DNAPK, 53BP1, and DNA ligase IV, as well as the ER stress response, through increased spliced XBP1 and X-linked inhibitor of apoptosis. Results from this study demonstrated that TUDCA activates TGR5-mediated signaling to reduce DNA damage and improve embryo development after UV exposure.
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Affiliation(s)
- Naomi Dicks
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Karina Gutierrez
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Luke Currin
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | | | - Werner Glanzner
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Marek Michalak
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Luis B Agellon
- School of Human Nutrition, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Vilceu Bordignon
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
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27
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Balakrishnan B, Siddiqi A, Mella J, Lupo A, Li E, Hollien J, Johnson J, Lai K. Salubrinal enhances eIF2α phosphorylation and improves fertility in a mouse model of Classic Galactosemia. Biochim Biophys Acta Mol Basis Dis 2019; 1865:165516. [PMID: 31362041 DOI: 10.1016/j.bbadis.2019.07.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 07/15/2019] [Accepted: 07/23/2019] [Indexed: 12/12/2022]
Abstract
Loss of galactose-1 phosphate uridylyltransferase (GALT) activity in humans results in Classic Galactosemia, and the GalT-deficient (GalT-/-) mouse mimics the patient condition. GalT-/- ovaries display elevated endoplasmic reticulum (ER) stress marker, BiP, and downregulated canonical phosphatidylinositol 3-kinase (Pi3k)/protein kinase B (Akt) growth/pro-survival signaling. Numbers of primordial follicles are reduced in the mutants, recapitulating the accelerated ovarian aging seen in human patients. We previously found that oral administration of the compound Salubrinal (an eIF2α phosphatase inhibitor), resulted in reduction of ovarian BiP expression, rescued Pi3k/Akt signaling, and a doubling of primordial follicles in GalT-/- adults. Here, we further characterized galactosemic stress in GalT-/- mice versus wild-type (WT) controls, and examined whether Salubrinal treatment improved broader reproductive parameters. We assessed the expression levels of factors of the unfolded protein response (UPR), and found that BiP, phospho-Perk, and phospho-eIF2α were all elevated in GalT-/- ovaries. However, neither IKK activation (NFκB pathway) nor alternative Xbp1 splicing downstream of ER membrane protein Ire1α activation was induced, suggesting an Xbp1-independent UPR in galactosemic stress. Moreover, Salubrinal treatment significantly increased the number of ovulated eggs in mutant animals after gonadotrophic superovulation. Salubrinal treatment also normalized estrus cycle stage lengths and resulted in significantly larger litter sizes than vehicle-treated mutants. Overall, we show that Salubrinal protects against galactosemia-induced primordial follicle loss in a fashion that includes suppressing the de-phosphorylation of eIF2α, and that intervention in this way significantly improves and extends ovarian function, fertility, and fecundity.
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Affiliation(s)
- B Balakrishnan
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, United States
| | - A Siddiqi
- Department of Pathology and Laboratory Medicine, University of Florida College of Medicine, United States
| | - J Mella
- School of Biological Sciences, University of Utah College of Science, United States
| | - A Lupo
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, United States
| | - E Li
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, United States
| | - J Hollien
- School of Biological Sciences, University of Utah College of Science, United States
| | - J Johnson
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Colorado, United States.
| | - K Lai
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, United States.
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28
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Zolini AM, Negrón-Pérez VM, Hansen PJ. Importance of prostate androgen-regulated mucin-like protein 1 in development of the bovine blastocyst. BMC DEVELOPMENTAL BIOLOGY 2019; 19:15. [PMID: 31277570 PMCID: PMC6612098 DOI: 10.1186/s12861-019-0195-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 06/19/2019] [Indexed: 12/22/2022]
Abstract
Background Prostate androgen-regulated mucin-like protein 1 (PARM1) is a pro-proliferative and anti-apoptotic glycoprotein involved in the endoplasmic reticulum (ER) stress response. A single nucleotide polymorphism in the coding region of PARM1 has been associated with competence of bovine embryos to develop to the blastocyst stage. Here we tested the importance of PARM1 for development by evaluating consequences of reducing PARM1 mRNA abundance on embryonic development and differentiation, gene expression and resistance to ER stress. Results Knockdown of PARM1 using an anti-PARM1 GapmeR did not affect competence of embryos to develop into blastocysts but decreased the number of trophectoderm (TE) cells in the blastocyst and tended to increase the number of cells in the blastocyst inner cell mass (ICM). Treatment of embryos with anti-PARM1 GapmeR affected expression of 4 and 3 of 90 genes evaluated at the compact-morula and blastocyst stage of development at days 5.5 and 7.5 after fertilization, respectively. In morulae, treatment increased expression of DAB2, INADL, and STAT3 and decreased expression of CCR2. At the blastocyst stage, knockdown of PARM1 increased expression of PECAM and TEAD4 and decreased expression of CCR7. The potential role of PARM1 in ER stress response was determined by evaluating effects of knockdown of PARM1 on development of embryos after exposure to heat shock or tunicamycin and on expression of ATF6, DDIT3 and EIF2AK3 at the compact morula and blastocyst stages. Both heat shock and tunicamycin reduced the percent of embryos becoming a blastocyst but response was unaffected by PARM1 knockdown. Similarly, there was no effect of knockdown on steady-state amounts of ATF6, DDIT3 or EIF2AK3. Conclusion PARM1 participates in formation of TE and ICM cells in early embryonic development but there is no evidence for the role of PARM1 in the ER stress response. Electronic supplementary material The online version of this article (10.1186/s12861-019-0195-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Adriana M Zolini
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program and Genetics Institute, University of Florida, PO Box 110910, Gainesville, Florida, 32611-0910, USA.,Present address: Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Verónica M Negrón-Pérez
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program and Genetics Institute, University of Florida, PO Box 110910, Gainesville, Florida, 32611-0910, USA.,Present address: Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Peter J Hansen
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program and Genetics Institute, University of Florida, PO Box 110910, Gainesville, Florida, 32611-0910, USA.
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29
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Park YR, Park HB, Kim MJ, Jung BD, Lee S, Park CK, Cheong HT. Effects of Endoplasmic Reticulum Stress Inhibitor Treatment during the Micromanipulation of Somatic Cell Nuclear Transfer in Porcine Oocytes. Dev Reprod 2019; 23:43-54. [PMID: 31049471 PMCID: PMC6487319 DOI: 10.12717/dr.2019.23.1.043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/26/2019] [Accepted: 03/09/2019] [Indexed: 12/31/2022]
Abstract
We examined the effects of endoplasmic reticulum (ER) stress inhibitor treatment
during the micromanipulation of porcine somatic cell nuclear transfer (SCNT) on
the in vitro development of SCNT embryos. ER stress inhibitors
such as salubrinal (200 nM) and tauroursodeoxycholic acid (TUDCA; 100 μM)
were added to the micromanipulation medium and holding medium. The expression of
X-box binding protein 1 (Xbp1), ER-stress-associated genes, and
apoptotic genes in SCNT embryos was confirmed at the one-cell and blastocyst
stages. Levels of Xbp1 splicing and expression of
ER-stress-associated genes in SCNT embryos at the one-cell stage decreased
significantly with TUDCA treatment (p<0.05). The
expression of ER-stress-associated genes also decreased slightly with the
addition of both salubrinal and TUDCA (Sal+TUD). The expression levels of
caspase-3 and Bcl2-associated Xprotein
(Bax) mRNA were also significantly lower in the TUDCA and
Sal+TUD treatments (p<0.05). At the blastocyst stage,
there were no differences in levels of Xbp1 splicing, and transcription of
ER-stress-associated genes and apoptosis genes between control and treatment
groups. However, the blastocyst formation rate (20.2%) and mean blastocyst cell
number (63.0±7.2) were significantly higher
(p<0.05) for embryos in the TUDCA treatment compared
with those for control (12.6% and 41.7±3.1, respectively). These results
indicate that the addition of ER-stress inhibitors, especially TUDCA, during
micromanipulation can inhibit cellular damage and enhance in
vitro development of SCNT embryos by reducing stress levels in the
ER.
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Affiliation(s)
- Yeo-Reum Park
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Hye-Bin Park
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Mi-Jeong Kim
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Bae-Dong Jung
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Seunghyung Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Choon-Keun Park
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Hee-Tae Cheong
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
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30
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Endoplasmic Reticulum (ER) Stress and Unfolded Protein Response (UPR) in Mammalian Oocyte Maturation and Preimplantation Embryo Development. Int J Mol Sci 2019; 20:ijms20020409. [PMID: 30669355 PMCID: PMC6359168 DOI: 10.3390/ijms20020409] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/03/2019] [Accepted: 01/09/2019] [Indexed: 12/11/2022] Open
Abstract
Mammalian oocytes and early embryos derived from in vitro production are highly susceptible to a variety of cellular stresses. During oocyte maturation and preimplantation embryo development, functional proteins must be folded properly in the endoplasmic reticulum (ER) to maintain oocyte and embryo development. However, some adverse factors negatively impact ER functions and protein synthesis, resulting in the activation of ER stress and unfolded protein response (UPR) signaling pathways. ER stress and UPR signaling have been identified in mammalian oocytes and embryos produced in vitro, suggesting that modulation of ER stress and UPR signaling play very important roles in oocyte maturation and the development of preimplantation embryos. In this review, we briefly describe the current state of knowledge regarding ER stress, UPR signaling pathways, and their roles and mechanisms in mammalian (excluding human) oocyte maturation and preimplantation embryo development.
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Kitamura Y, Bikbova G, Baba T, Yamamoto S, Oshitari T. In vivo effects of single or combined topical neuroprotective and regenerative agents on degeneration of retinal ganglion cells in rat optic nerve crush model. Sci Rep 2019; 9:101. [PMID: 30643179 PMCID: PMC6331543 DOI: 10.1038/s41598-018-36473-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/22/2018] [Indexed: 01/25/2023] Open
Abstract
To determine the effectiveness of a single or a combination of topical neurotrophic factors (NFs) in protecting retinal ganglion cells (RGCs) in the rat optic nerve crush (ONC) model, the left ONC was performed to induce the death of the RGCs in adult Sprague-Dawley rats. The NFs studied were tauroursodeoxycholic acid (TUDCA), citicoline, neurotrophin-4 (NT-4), combined TUDCA/citicoline (Doublet-1), combined TUDCA/NT-4 (Doublet-2), combined TUDCA/citicoline/NT-4 (Triplet), and PBS. After 2 weeks, the number of RGCs was determined by Brn3a immunostaining. The optic nerves were immunostained for anti-Growth Associated Protein-43(GAP-43) and -200kD neurofilament heavy antibody to study optic nerve regeneration. Two weeks after the ONC, the densities of RGCs in all treated eyes were significantly higher than that of the PBS treated eyes. In the Triplet group, the number of RGC axons after ONC was significantly higher than that in all of the single treatment groups and the number of TUNEL positive cells was significantly reduced and the number of GAP-43 immunopositive axons was significantly greater than those in the PBS group. Neovascularization was observed only in the Doublet-1 group. We conclude that the combination of the three NFs was the most effective way to protect RGCs after the ONC.
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Affiliation(s)
- Yuta Kitamura
- Department of Ophthalmology and Visual Science Chiba University, Graduate School of Medicine, Inohana 1-8-1, Chuo-ku, Chiba, 260-8670, Chiba, Japan
| | - Guzel Bikbova
- Department of Ophthalmology and Visual Science Chiba University, Graduate School of Medicine, Inohana 1-8-1, Chuo-ku, Chiba, 260-8670, Chiba, Japan
| | - Takayuki Baba
- Department of Ophthalmology and Visual Science Chiba University, Graduate School of Medicine, Inohana 1-8-1, Chuo-ku, Chiba, 260-8670, Chiba, Japan
| | - Shuichi Yamamoto
- Department of Ophthalmology and Visual Science Chiba University, Graduate School of Medicine, Inohana 1-8-1, Chuo-ku, Chiba, 260-8670, Chiba, Japan
| | - Toshiyuki Oshitari
- Department of Ophthalmology and Visual Science Chiba University, Graduate School of Medicine, Inohana 1-8-1, Chuo-ku, Chiba, 260-8670, Chiba, Japan. .,Department of Ophthalmology, International University of Health and Welfare, School of Medicine, Kouzunomori 4-3, Narita, 286-8686, Chiba, Japan.
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Pterostilbene exerts a protective effect via regulating tunicamycin-induced endoplasmic reticulum stress in mouse preimplantation embryos. In Vitro Cell Dev Biol Anim 2018; 55:82-93. [DOI: 10.1007/s11626-018-0308-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/30/2018] [Indexed: 10/27/2022]
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Park HB, Kim MJ, Jung BD, Lee S, Park CK, Yang BK, Cheong HT. Effect of Endoplasmic Reticulum (ER) Stress Inhibitor Treatment during Parthenogenetic Activation on the Apoptosis and In Vitro Development of Parthenogenetic Porcine Embryos. Dev Reprod 2018; 22:235-244. [PMID: 30324160 PMCID: PMC6182227 DOI: 10.12717/dr.2018.22.3.235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/07/2018] [Accepted: 08/31/2018] [Indexed: 11/17/2022]
Abstract
We investigate the effect of endoplasmic reticulum (ER) stress inhibitor
treatment during parthenogenetic activation of oocytes on the ER stress
generation, apoptosis, and in vitro development of
parthenogenetic porcine embryos. Porcine in vitro matured
oocytes were activated by 1) electric stimulus (E) or 2) E+10 μM
Ca-ionophore (A23187) treatment (EC). Oocytes were then treated by ER stress
inhibitors such as salubrinal (200 nM) and tauroursodeoxychloic acid (TUDCA, 100
μM) for 3 h prior to in vitro culture. Parthenogenetic
embryos were sampled to analyze ER stress and apoptosis at the 1-cell and
blastocyst stages. The x-box binding protein 1 (Xbp1) mRNA and ER
stress-associated genes were analyzed by RT-PCR or RT-qPCR. Apoptotic gene
expression was analyzed by RT-PCR. At the 1-cell stage, although no difference
was observed in Xbp1 splicing among treatments, BiP transcription level in the E
group was significantly reduced by salubrinal treatment, and GRP94 and ATF4
transcription levels in EC group were significantly reduced by all treatments
(p<0.05) compared to control. In the EC group, both
apoptotic genes were reduced by ER stress inhibitor treatments compared to
control (p<0.05) except Caspase-3 gene by TUDCA
treatment. These results suggest that the treatment of ER stress inhibitor
during parthenogenetic activation can reduce ER stress, and thereby reduce
apoptosis and promote in vitro development of porcine
parthenogenetic embryos.
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Affiliation(s)
- Hye-Bin Park
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Mi-Jeong Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Bae-Dong Jung
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Seunghyung Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Choon-Keun Park
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Boo-Keun Yang
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Hee-Tae Cheong
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
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Mochizuki M, Miyagi K, Kishigami S. Optimizing treatment of tauroursodeoxycholic acid to improve embryonic development after in vitro maturation of cumulus-free oocytes in mice. PLoS One 2018; 13:e0202962. [PMID: 30148855 PMCID: PMC6110502 DOI: 10.1371/journal.pone.0202962] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 08/13/2018] [Indexed: 12/17/2022] Open
Abstract
Cumulus-free in vitro maturation (IVM) provides a powerful tool to manipulate immature oocytes, but IVM oocytes lead to poor development after fertilization. Supplementation of the culture medium with tauroursodeoxycholic acid (TUDCA), a bile acid, has been reported to improve the development of embryos derived from in vivo fertilized (IVF) embryos after in vitro culture (IVC) by attenuating endoplasmic reticulum stress. However, it remains unclear if TUDCA can improve development of IVM-IVF embryos. Here, we examined whether TUDCA treatment could improve embryonic development during or after IVM. Immature GV oocytes collected from ovaries of ICR female mice that were free from cumulus cells were subjected to IVM in αMEM containing 5% FBS for 16 h. TUDCA was added to the media at varying concentrations (0–1000 μM) during IVM and IVC. TUDCA treatment during IVM reduced both MII and pronuclear (PN) rates but did not affect blastocyst rates of fertilized embryos. In contrast, TUDCA treatment during IVC significantly increased blastocyst formation rates in a concentration dependent manner. Finally, embryo transfer after TUDCA treatment revealed a significant improvement in the rates of offspring production (15% with 1000 μM TUDCA vs. 6.0% control). These results show that treatment with 1000 μM of TUDCA significantly can improve poor embryonic development of cumulus-free IVM-IVF embryos.
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Affiliation(s)
- Masato Mochizuki
- Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan
| | - Kodai Miyagi
- Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan
| | - Satoshi Kishigami
- Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan.,Advanced Biotechnology Center, University of Yamanashi, Kofu-shi, Yamanashi, Japan
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Lee HY, Bae HK, Jung BD, Lee S, Park CK, Yang BK, Cheong HT. Analysis of Endoplasmic Reticulum (ER) Stress Induced during Somatic Cell Nuclear Transfer (SCNT) Process in Porcine SCNT Embryos. Dev Reprod 2018; 22:73-83. [PMID: 29707686 PMCID: PMC5915769 DOI: 10.12717/dr.2018.22.1.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/11/2018] [Accepted: 03/24/2018] [Indexed: 11/25/2022]
Abstract
This study investigates the endoplasmic reticulum (ER) stress and subsequent
apoptosis in duced during somatic cell nuclear transfer (SCNT) process of
porcine SCNT embryos. Porcine SCNT and in vitro fertilization
(IVF) embryos were sampled at 3 h and 20 h after SCNT or IVF and at the
blastocyst stage for mRNA extraction. The x-box binding protein 1 (Xbp1) mRNA
and the expressions of ER stress-associated genes were confirmed by RT-PCR or
RT-qPCR. Apoptotic gene expression was analyzed by RT-PCR. Before commencing
SCNT, somatic cells treated with tunicamycin (TM), an ER stress inducer,
confirmed the splicing of Xbp1 mRNA and increased expressions of ER
stress-associated genes. In all the embryonic stages, the SCNT embryos, when
compared with the IVF embryos, showed slightly increased expression of spliced
Xbp1 (Xbp1s) mRNA and significantly increased expression of ER stress-associated
genes (p<0.05). In all stages, apoptotic gene expression
was slightly higher in the SCNT embryos, but not significantly different from
that of the IVF embryos except for the Bax/Bcl2L1 ratio in the 1-cell stage
(p<0.05). The result of this study indicates that
excessive ER stress can be induced by the SCNT process, which induce apoptosis
of SCNT embryos.
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Affiliation(s)
- Hwa-Yeon Lee
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Hyo-Kyung Bae
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Bae-Dong Jung
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Seunghyung Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Choon-Keun Park
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Boo-Keun Yang
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Hee-Tae Cheong
- College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
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Park H, Park J, Kim J, Yang S, Jung J, Kim M, Kang M, Cho YH, Wee G, Yang H, Song B, Kim S, Koo D. Melatonin improves the meiotic maturation of porcine oocytes by reducing endoplasmic reticulum stress during in vitro maturation. J Pineal Res 2018; 64:e12458. [PMID: 29149522 PMCID: PMC5814851 DOI: 10.1111/jpi.12458] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/30/2017] [Indexed: 01/10/2023]
Abstract
Under endoplasmic reticulum (ER)-stress conditions, the unfolded protein response (UPR) generates a defense mechanism in mammalian cells. The regulation of UPR signaling is important in oocyte maturation, embryo development, and female reproduction of pigs. Recent studies have shown that melatonin plays an important role as an antioxidant to improve pig oocyte maturation. However, there is no report on the role of melatonin in the regulation of UPR signaling and ER-stress during in vitro maturation (IVM) of porcine oocytes. Therefore, the objective of this study was to investigate the antioxidative effects of melatonin on porcine oocyte maturation through the regulation of ER-stress and UPR signaling. We investigated the changes in the mRNA/protein expression levels of three UPR signal genes (Bip/Grp78, ATF4, P90/50ATF6, sXbp1, and CHOP) on oocytes, cumulus cells, and cumulus-oocyte complexes (COCs) during IVM (metaphase I; 22 hours and metaphase II; 44 hours) by Western blot and reverse transcription-polymerase chain reaction analysis. Treatment with the ER-stress inducer, tunicamycin (Tm), significantly increased expression of UPR markers. Additionally, cumulus cell expansion and meiotic maturation of oocytes were reduced in COCs of Tm-treated groups (1, 5, and 10 μg/mL). We confirmed the reducing effects of melatonin (0.1 μmol/L) on ER-stress after pretreatment with Tm (5 μg/mL; 22 hours) in maturing COCs. Addition of melatonin (0.1 μmol/L) to Tm-pretreated COCs recovered meiotic maturation rates and expression of most UPR markers. In conclusion, we confirmed a role for melatonin in the modulation of UPR signal pathways and reducing ER-stress during IVM of porcine oocytes.
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Affiliation(s)
- Hyo‐Jin Park
- Department of BiotechnologyCollege of EngineeringDaegu UniversityJillyangGyeongsanGyeongbukKorea
| | - Jae‐Young Park
- Department of BiotechnologyCollege of EngineeringDaegu UniversityJillyangGyeongsanGyeongbukKorea
- Saewha HospitalDongnaeBusanKorea
| | - Jin‐Woo Kim
- Department of BiotechnologyCollege of EngineeringDaegu UniversityJillyangGyeongsanGyeongbukKorea
| | - Seul‐Gi Yang
- Department of BiotechnologyCollege of EngineeringDaegu UniversityJillyangGyeongsanGyeongbukKorea
| | - Jae‐Min Jung
- Department of BiotechnologyCollege of EngineeringDaegu UniversityJillyangGyeongsanGyeongbukKorea
| | - Min‐Ji Kim
- Department of BiotechnologyCollege of EngineeringDaegu UniversityJillyangGyeongsanGyeongbukKorea
| | - Man‐Jong Kang
- Department of Animal ScienceCollege of Agriculture and Life SciencesChonnam National UniversityGwangjuKorea
| | - Young Ho Cho
- Department of Pharmaceutics & BiotechnologyCollege of Medical EngineeringKonyang UniversityDaejeonKorea
| | - Gabbine Wee
- Laboratory Animal CenterDaegu‐Gyeongbuk Medical Innovation Foundation (DGMIF)DaeguKorea
| | - Hee‐Young Yang
- Laboratory Animal CenterDaegu‐Gyeongbuk Medical Innovation Foundation (DGMIF)DaeguKorea
| | - Bong‐Seok Song
- National Primate Research Center & Futuristic Animal Resource and Research CenterKorea Research Institute of Bioscience and BiotechnologyOchangChungbukKorea
| | - Sun‐Uk Kim
- National Primate Research Center & Futuristic Animal Resource and Research CenterKorea Research Institute of Bioscience and BiotechnologyOchangChungbukKorea
| | - Deog‐Bon Koo
- Department of BiotechnologyCollege of EngineeringDaegu UniversityJillyangGyeongsanGyeongbukKorea
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Park HJ, Park JY, Kim JW, Yang SG, Jung JM, Kim MJ, Park JJ, Koo DB. Regulation of the Endoplasmic Reticulum Stress by BIP/GRP78 is involved in Meiotic Maturation of Porcine Oocytes In Vitro. Dev Reprod 2017; 21:407-415. [PMID: 29354786 PMCID: PMC5769134 DOI: 10.12717/dr.2017.21.4.407] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 11/17/2017] [Accepted: 12/04/2017] [Indexed: 11/17/2022]
Abstract
In the present study, we investigated the role of binding immunoglobulin protein/glucose-regulated protein, 78-kDa (BIP/GRP78)-regulated endoplasmic reticulum (ER)-stress on meiotic maturation and cumulus cells expansion in porcine cumulus-oocyte complexes (COCs). Previously, it has been demonstrated that unfolded protein response (UPR)-related genes, such as molecules involved in ER-stress defense mechanisms, were expressed in matured oocytes and cumulus cells during in vitro maturation (IVM) of porcine oocytes. However, BIP/GRP78-mediated regulation of ER stress in porcine oocytes has not been reported. Firstly, we observed the effects of knockdown of BIP/GRP78 (an UPR initiation marker) using porcine-specific siRNAs (#909, #693, and #1570) on oocyte maturation. Among all siRNAs, siRNA #693 significantly reduced the protein levels of UPR marker proteins (BIP/GRP78, ATF4, and P90ATF6) in porcine COCs observed by Western blotting and immunofluorescence analysis. We also observed that the reduction of BIP/GRP78 levels by siRNA#693 significantly inhibited the meiotic maturation of oocytes (siRNA #693: 32.5±10.1% vs control: 77.8±5.3%). In addition, we also checked the effect of ER-stress inhibitors, tauroursodeoxycholic acid (TUDCA, 200 μM) and melatonin (0.1 μM), in BIP/ GRP78-knockdown oocytes. TUDCA and melatonin treatment could restore the expression levels of ER-stress marker proteins (BIP/GRP78, p-eIF2α, eIF2α, ATF4, and P90ATF6) in siRNA #693-transfected matured COCs. In conclusion, these results demonstrated that BIP/GRP78-mediated regulation of UPR signaling and ER stress plays an important role in in vitro maturation of porcine oocytes.
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Affiliation(s)
- Hyo-Jin Park
- Dept. of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Republic of Korea
| | - Jae-Young Park
- Dept. of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Republic of Korea.,Saewha Hospital, Dongnae, Busan 47822, Republic of Korea
| | - Jin-Woo Kim
- Dept. of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Republic of Korea
| | - Seul-Gi Yang
- Dept. of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Republic of Korea
| | - Jae-Min Jung
- Dept. of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Republic of Korea
| | - Min-Ji Kim
- Dept. of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Republic of Korea
| | - Joung Jun Park
- Animal Reproduction & Biotechnology Center, Myung-Poom Hanwoo Consulting, Gangwon 25232, Republic of Korea
| | - Deog-Bon Koo
- Dept. of Biotechnology, College of Engineering, Daegu University, Gyeongsan 38453, Republic of Korea
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Guo J, Niu Y, Shin K, Kwon J, Kim N, Cui X. Fatty acid synthase knockout impairs early embryonic development via induction of endoplasmic reticulum stress in pigs. J Cell Physiol 2017; 233:4225-4234. [DOI: 10.1002/jcp.26241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/27/2017] [Accepted: 10/18/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Jing Guo
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbukRepublic of Korea
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative MedicineHarbin Veterinary Research Institute of Chinese Academy of Agricultural SciencesHarbinChina
| | - Ying‐Jie Niu
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbukRepublic of Korea
| | - Kyung‐Tae Shin
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbukRepublic of Korea
| | - Jeong‐Woo Kwon
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbukRepublic of Korea
| | - Nam‐Hyung Kim
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbukRepublic of Korea
| | - Xiang‐Shun Cui
- Department of Animal SciencesChungbuk National UniversityCheongjuChungbukRepublic of Korea
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Dicks N, Bohrer RC, Gutierrez K, Michalak M, Agellon LB, Bordignon V. Relief of endoplasmic reticulum stress enhances DNA damage repair and improves development of pre-implantation embryos. PLoS One 2017; 12:e0187717. [PMID: 29099865 PMCID: PMC5669469 DOI: 10.1371/journal.pone.0187717] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/24/2017] [Indexed: 11/18/2022] Open
Abstract
Early-cleaving embryos are known to have better capacity to reach the blastocyst stage and produce better quality embryos compared to late-cleaving embryos. To investigate the significance of endoplasmic reticulum (ER) stress on early embryo cleavage kinetics and development, porcine embryos produced in vitro were separated into early- and late-cleaving groups and then cultured in the absence or presence of the ER stress inhibitor tauroursodeoxycholic acid (TUDCA). Developing embryos were collected at days 3 to 7 of culture for assessment of ER stress status, incidence of DNA double-strand breaks (DSBs), development and total cell number. In the absence of TUDCA treatment, late-cleaving embryos exhibited ER stress, higher incidence of DNA DSBs, as well as reductions in development to the blastocyst stage and total embryo cell numbers. Treatment of late-cleaving embryos with TUDCA mitigated these effects and markedly improved embryo quality and development. These results demonstrate the importance of stress coping responses in early developing embryos, and that reduction of ER stress is a potential means to improve embryo quality and developmental competence.
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Affiliation(s)
- Naomi Dicks
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Rodrigo C. Bohrer
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Karina Gutierrez
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
| | - Marek Michalak
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Luis B. Agellon
- School of Human Nutrition, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
- * E-mail: (VB); (LBA)
| | - Vilceu Bordignon
- Department of Animal Science, McGill University, Ste-Anne-de-Bellevue, Quebec, Canada
- * E-mail: (VB); (LBA)
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Ali I, Liu HX, Zhong-Shu L, Dong-Xue M, Xu L, Shah SZA, Ullah O, Nan-Zhu F. Reduced glutathione alleviates tunicamycin-induced endoplasmic reticulum stress in mouse preimplantation embryos. J Reprod Dev 2017; 64:15-24. [PMID: 29081452 PMCID: PMC5830354 DOI: 10.1262/jrd.2017-055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Endoplasmic reticulum (ER) stress, a dysfunction in protein-folding capacity, is involved in many pathological and physiological responses, including embryonic development. This study aims to determine the
developmental competence, apoptosis, and stress-induced gene expression in mouse preimplantation embryos grown in an in vitro culture medium supplemented with different concentrations of the ER stress
inducer tunicamycin (TM) and the antioxidant glutathione (GSH). Treatment of zygotes with 0.5 µg/ml TM significantly decreased (P < 0.05) the rate of blastocyst formation, whereas 1 mM GSH supplementation improved the
developmental rate of blastocysts. Furthermore, TM treatment significantly increased (P < 0.05) the apoptotic index and reduced the total number of cells, whereas GSH significantly increased the total number of cells
and decreased the apoptotic index. The expression levels of ER chaperones, including immunoglobulin-binding protein, activating transcription factor 6, double-stranded activated protein kinase-like ER kinase, activating
transcription factor 4, and C/EBP homologous protein were significantly increased (P < 0.05) by TM, but significantly decreased (P < 0.05) by GSH treatment. A similar pattern was observed in the case of the
pro-apoptotic gene, B cell lymphoma-associated X protein. The expression level of the anti-apoptotic gene B cell lymphoma 2, was decreased by TM, but significantly increased after co-treatment with GSH. In conclusion,
GSH improves the developmental potential of mouse embryos and significantly alleviates ER stress.
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Affiliation(s)
- Ihsan Ali
- 1) Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Hai Xing Liu
- 1) Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Li Zhong-Shu
- 1) Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Ma Dong-Xue
- 1) Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Lijie Xu
- 1) Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Syed Zahid Ali Shah
- 2) National Animal Transmissible Spongiform Encephalopathy Laboratory, Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agro Biotechnology, China Agricultural University, Beijing 100193, China
| | - Obaid Ullah
- 1) Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Fang Nan-Zhu
- 1) Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
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Kang MH, Das J, Gurunathan S, Park HW, Song H, Park C, Kim JH. The cytotoxic effects of dimethyl sulfoxide in mouse preimplantation embryos: a mechanistic study. Am J Cancer Res 2017; 7:4735-4752. [PMID: 29187900 PMCID: PMC5706096 DOI: 10.7150/thno.21662] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 09/18/2017] [Indexed: 12/29/2022] Open
Abstract
Rationale: Dimethyl sulfoxide (DMSO) is commonly used as a solvent for water-insoluble substances, a vehicle for drug therapy, and a cryoprotectant for cultured cells. DMSO induced embryonic defects and its mechanism of action remains unclear. The rationale is based on the assumption that DMSO supplementation should induce long-term negative effects on both pre- and post-implantation embryo development. Methods: DMSO induced oxidative stress, ER stress, autophagy, mitophagy, signaling responsible genes and proteins were determined by RT-qPCR, Western blotting, immunofluorescence, and confocal microscopy. DMSO induced mitochondrial dysfunction was measured by transmission electron microcopy and JC-1 assay. Apoptosis was estimated using TUNEL and comet assay. Post-implantation embryo developmental capability was estimated by implantation site and fetus numbers. Results: Exposure to DMSO induced an early oxidative stress response within 0.5 to 2 h in 1-cell zygotes by disrupting the balance of pro- and anti-oxidants. Notably, DMSO-treated 2-cell embryos showed increased expression of unfolded protein response genes such as Hspa5, Hsp90b1, Ddit3, Atf4, and Xbp1. As a result, the development of many embryos is arrested at the 2-cell, 4-cell, or morula stages in a dose-dependent manner. Further, DMSO-induced endoplasmic reticulum stress increased mitochondrial Ca2+ levels, induced mitochondrial depolarization/dysfunction, and induced apoptotic cell death via the JNK/ATF2-dependent pathway. Consequently, treatment with DMSO increased the expression of autophagy initiation-, phagophore elongation-, and autophagosome formation-related genes, as well as localization of PINK1/Parkin, which are the main mediators of mitophagy, in mitochondria. Interestingly, DMSO causes cytotoxic effects in preimplantation embryos by inducing extensive mitophagy and autophagy. Especially, DMSO treatment decreased the inner cell mass and trophectoderm cell numbers as well as mRNA expression of B3gnt5 and Wnt3a in developed blastocysts, which decreased the implantation and developmental rates of full-term offspring after being transferred into pseudopregnant mice. Conclusion: These results provide a significant contribution to finding effective protective agents to combat DMSO mediated reproductive toxicity for application in human embryos in the near future.
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Ali I, Shah SZA, Jin Y, Li ZS, Ullah O, Fang NZ. Reactive oxygen species-mediated unfolded protein response pathways in preimplantation embryos. J Vet Sci 2017; 18:1-9. [PMID: 28057903 PMCID: PMC5366292 DOI: 10.4142/jvs.2017.18.1.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 09/28/2016] [Accepted: 11/23/2016] [Indexed: 12/19/2022] Open
Abstract
Excessive production of reactive oxygen species (ROS) and endoplasmic reticulum (ER) stress-mediated responses are critical to embryonic development in the challenging in vitro environment. ROS production increases during early embryonic development with the increase in protein requirements for cell survival and growth. The ER is a multifunctional cellular organelle responsible for protein folding, modification, and cellular homeostasis. ER stress is activated by a variety of factors including ROS. Such stress leads to activation of the adaptive unfolded protein response (UPR), which restores homeostasis. However, chronic stress can exceed the toleration level of the ER, resulting in cellular apoptosis. In this review, we briefly describe the generation and impact of ROS in preimplantation embryo development, the ROS-mediated activation mechanism of the UPR via the ER, and the subsequent activation of signaling pathways following ER stress in preimplantation embryos.
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Affiliation(s)
- Ihsan Ali
- Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Syed Zahid Ali Shah
- National Animal Transmissible Spongiform Encephalopathy Laboratory, Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agro Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yi Jin
- Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Zhong-Shu Li
- Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Obaid Ullah
- Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
| | - Nan-Zhu Fang
- Laboratory of Animal Genetic Breeding and Reproduction, Agriculture College of Yanbian University, Yanji 133002, China
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Knockdown of XBP1 by RNAi in Mouse Granulosa Cells Promotes Apoptosis, Inhibits Cell Cycle, and Decreases Estradiol Synthesis. Int J Mol Sci 2017; 18:ijms18061152. [PMID: 28555054 PMCID: PMC5485976 DOI: 10.3390/ijms18061152] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/10/2017] [Accepted: 05/23/2017] [Indexed: 01/12/2023] Open
Abstract
Granulosa cells are crucial for follicular growth, development, and follicular atresia. X-box binding protein 1 (XBP1), a basic region-leucine zipper protein, is widely involved in cell differentiation, proliferation, apoptosis, cellular stress response, and other signaling pathways. In this study, RNA interference, flow cytometry, western blot, real-time PCR, Cell Counting Kit (CCK8), and ELISA were used to investigate the effect of XBP1 on steroidogenesis, apoptosis, cell cycle, and proliferation of mouse granulosa cells. ELISA analysis showed that XBP1 depletion significantly decreased the concentrations of estradiol (E2). Additionally, the expression of estrogen synthesis enzyme Cyp19a1 was sharply downregulated. Moreover, flow cytometry showed that knockdown of XBP1 increased the apoptosis rate and arrests the cell cycle in S-phase in granulosa cells (GCs). Further study confirmed these results. The expression of CCAAT-enhancer-binding protein homologous protein (CHOP), cysteinyl aspartate specific proteases-3 (caspase-3), cleaved caspase-3, and Cyclin E was upregulated, while that of Bcl-2, Cyclin A1, and Cyclin B1 was downregulated. Simultaneously, CCK8 analysis indicated that XBP1 disruption inhibited cell proliferation. In addition, XBP1 knockdown also alters the expression of Has2 and Ptgs2, two essential genes for folliculogenesis. Collectively, these data reveal a novel critical role of XBP1 in folliculogenesis by regulating the cell cycle, apoptosis, and steroid synthesis of mouse granulosa cells.
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Combination of Neuroprotective and Regenerative Agents for AGE-Induced Retinal Degeneration: In Vitro Study. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8604723. [PMID: 28573143 PMCID: PMC5440790 DOI: 10.1155/2017/8604723] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 02/27/2017] [Accepted: 04/04/2017] [Indexed: 11/18/2022]
Abstract
To determine the most effective combination of neuroprotective and regenerative agents for cultured retinal neurons from advanced glycation end products- (AGEs-) induced degeneration, retinal explants of 7 adult Sprague-Dawley rats were three-dimensionally cultured in collagen gel and incubated in serum-free media and in 7 media; namely, AGEs, AGEs + 100 μM citicoline, AGEs + 10 ng/mL NT-4, AGEs + 100 μM TUDCA, AGEs + 100 μM citicoline + TUDCA (doublet), and AGEs + 100 μM citicoline + TUDCA + 10 ng/mL NT-4 (triplet) were examined. The number of regenerating neurites was counted after 7 days of culture, followed by performing TUNEL and DAPI staining. The ratio of TUNEL-positive cells to the number of DAPI-stained nuclei was calculated. Immunohistochemical examinations for the active form of caspase-9 and JNK were performed. All of the neuroprotectants increased the number of neurites and decreased the number of TUNEL-positive cells. However, the number of neurites was significantly higher, and the number of TUNEL-positive cells and caspase-9- and JNK-immunopositive cells was fewer in the retinas incubated with the combined three agents. Combination solutions containing citicoline, TUDCA, and NT-4 should be considered for neuroprotective and regenerative therapy for AGE-related retinal degeneration.
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Endoplasmic Reticulum Stress and Homeostasis in Reproductive Physiology and Pathology. Int J Mol Sci 2017; 18:ijms18040792. [PMID: 28397763 PMCID: PMC5412376 DOI: 10.3390/ijms18040792] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/30/2017] [Accepted: 03/31/2017] [Indexed: 01/07/2023] Open
Abstract
The endoplasmic reticulum (ER), comprises 60% of the total cell membrane and interacts directly or indirectly with several cell organelles i.e., Golgi bodies, mitochondria and proteasomes. The ER is usually associated with large numbers of attached ribosomes. During evolution, ER developed as the specific cellular site of synthesis, folding, modification and trafficking of secretory and cell-surface proteins. The ER is also the major intracellular calcium storage compartment that maintains cellular calcium homeostasis. During the production of functionally effective proteins, several ER-specific molecular steps sense quantity and quality of synthesized proteins as well as proper folding into their native structures. During this process, excess accumulation of unfolded/misfolded proteins in the ER lumen results in ER stress, the homeostatic coping mechanism that activates an ER-specific adaptation program, (the unfolded protein response; UPR) to increase ER-associated degradation of structurally and/or functionally defective proteins, thus sustaining ER homeostasis. Impaired ER homeostasis results in aberrant cellular responses, contributing to the pathogenesis of various diseases. Both female and male reproductive tissues undergo highly dynamic cellular, molecular and genetic changes such as oogenesis and spermatogenesis starting in prenatal life, mainly controlled by sex-steroids but also cytokines and growth factors throughout reproductive life. These reproductive changes require ER to provide extensive protein synthesis, folding, maturation and then their trafficking to appropriate cellular location as well as destroying unfolded/misfolded proteins via activating ER-associated degradation mediated proteasomes. Many studies have now shown roles for ER stress/UPR signaling cascades in the endometrial menstrual cycle, ovarian folliculogenesis and oocyte maturation, spermatogenesis, fertilization, pre-implantation embryo development and pregnancy and parturition. Conversely, the contribution of impaired ER homeostasis by severe/prolong ER stress-mediated UPR signaling pathways to several reproductive tissue pathologies including endometriosis, cancers, recurrent pregnancy loss and pregnancy complications associated with pre-term birth have been reported. This review focuses on ER stress and UPR signaling mechanisms, and their potential roles in female and male reproductive physiopathology involving in menstrual cycle changes, gametogenesis, preimplantation embryo development, implantation and placentation, labor, endometriosis, pregnancy complications and preterm birth as well as reproductive system tumorigenesis.
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Lin T, Lee JE, Oqani RK, Kim SY, Cho ES, Jeong YD, Baek JJ, Jin DI. Tauroursodeoxycholic acid improves pre-implantation development of porcine SCNT embryo by endoplasmic reticulum stress inhibition. Reprod Biol 2016; 16:269-278. [PMID: 27765486 DOI: 10.1016/j.repbio.2016.10.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 10/03/2016] [Accepted: 10/08/2016] [Indexed: 10/20/2022]
Abstract
The aim of this study is to investigate whether endoplasmic reticulum (ER) stress attenuation could improve porcine somatic cell nuclear transfer (SCNT) embryo developmental competence. We treated porcine SCNT embryos with TUDCA (tauroursodeoxycholic acid, an inhibitor of ER stress) and/or TM (tunicamycin, an ER stress inducer), and examined embryonic developmental potential, embryo quality, the levels of ER stress markers (XBP1 protein and mRNA) and apoptosis-related-genes (BAX and BCL2 mRNA). Immunostaining detected X-box-binding protein (XBP1), a key gene regulator during ER stress, at all stages of SCNT embryo development. Embryo development analysis revealed that TUDCA treatment markedly increased (p<0.05) blastocyst formation rate, total cell number and inner cell mass (ICM) cell number compared to untreated control group. The TUDCA and TM groups showed significant alterations in XBP1 protein and XBP1-s mRNA levels compared to controls (lower and higher, respectively; p<0.05). Also, TUDCA treatment reduced oxidative stress by up-regulation of the antioxidant, GSH. TUNEL assay showed that TUDCA treatment significantly reduced apoptosis in porcine SCNT blastocysts confirmed by decreased pro-apoptotic BAX and increased anti-apoptotic BCL2 mRNA levels. Collectively, our results indicated that TUDCA can enhance the developmental potential of porcine SCNT embryos by attenuating ER-stress and reducing apoptosis.
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Affiliation(s)
- Tao Lin
- Department of Animal Science & Biotechnology, Research Center for Transgenic Cloned Pigs, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jae Eun Lee
- Department of Animal Science & Biotechnology, Research Center for Transgenic Cloned Pigs, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Reza K Oqani
- Department of Animal Science & Biotechnology, Research Center for Transgenic Cloned Pigs, Chungnam National University, Daejeon 34134, Republic of Korea
| | - So Yeon Kim
- Department of Animal Science & Biotechnology, Research Center for Transgenic Cloned Pigs, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Eun Seok Cho
- Department of Animal Resource Development, National Institute of Animal Science, Cheonan, 31001, Republic of Korea
| | - Yong Dae Jeong
- Department of Animal Resource Development, National Institute of Animal Science, Cheonan, 31001, Republic of Korea
| | - Jun Jong Baek
- Department of Animal Improvement, Chungnam Livestock Institute, Cheongyang-gun, Chungman, 33350, Republic of Korea
| | - Dong Il Jin
- Department of Animal Science & Biotechnology, Research Center for Transgenic Cloned Pigs, Chungnam National University, Daejeon 34134, Republic of Korea.
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Gu XW, Yan JQ, Dou HT, Liu J, Liu L, Zhao ML, Liang XH, Yang ZM. Endoplasmic reticulum stress in mouse decidua during early pregnancy. Mol Cell Endocrinol 2016; 434:48-56. [PMID: 27283502 DOI: 10.1016/j.mce.2016.06.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 05/10/2016] [Accepted: 06/05/2016] [Indexed: 02/07/2023]
Abstract
Unfolded or misfolded protein accumulation in the endoplasmic reticulum lumen leads to endoplasmic reticulum stress (ER stress). Although it is known that ER stress is crucial for mammalian reproduction, little is known about its physiological significance and underlying mechanism during decidualization. Here we show that Ire-Xbp1 signal transduction pathway of unfolded protein response (UPR) is activated in decidual cells. The process of decidualization is compromised by ER stress inhibitor tauroursodeoxycholic acid sodium (TUDCA) and Ire specific inhibitor STF-083010 both in vivo and in vitro. A high concentration of ER stress inducer tunicamycin (TM) suppresses stromal cells proliferation and decidualization, while a lower concentration is beneficial. We further show that ER stress induces DNA damage and polyploidization in stromal cells. In conclusion, our data suggest that the GRP78/Ire1/Xbp1 signaling pathway of ER stress-UPR is activated and involved in mouse decidualization.
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Affiliation(s)
- Xiao-Wei Gu
- Department of Biology, Shantou University, Shantou 515063, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Jia-Qi Yan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Hai-Ting Dou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Jie Liu
- Department of Biology, Shantou University, Shantou 515063, China
| | - Li Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Meng-Long Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xiao-Huan Liang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Zeng-Ming Yang
- Department of Biology, Shantou University, Shantou 515063, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
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Yang Y, Cheung HH, Tu J, Miu KK, Chan WY. New insights into the unfolded protein response in stem cells. Oncotarget 2016; 7:54010-54027. [PMID: 27304053 PMCID: PMC5288239 DOI: 10.18632/oncotarget.9833] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 05/29/2016] [Indexed: 12/15/2022] Open
Abstract
The unfolded protein response (UPR) is an evolutionarily conserved adaptive mechanism to increase cell survival under endoplasmic reticulum (ER) stress conditions. The UPR is critical for maintaining cell homeostasis under physiological and pathological conditions. The vital functions of the UPR in development, metabolism and immunity have been demonstrated in several cell types. UPR dysfunction activates a variety of pathologies, including cancer, inflammation, neurodegenerative disease, metabolic disease and immune disease. Stem cells with the special ability to self-renew and differentiate into various somatic cells have been demonstrated to be present in multiple tissues. These cells are involved in development, tissue renewal and certain disease processes. Although the role and regulation of the UPR in somatic cells has been widely reported, the function of the UPR in stem cells is not fully known, and the roles and functions of the UPR are dependent on the stem cell type. Therefore, in this article, the potential significances of the UPR in stem cells, including embryonic stem cells, tissue stem cells, cancer stem cells and induced pluripotent cells, are comprehensively reviewed. This review aims to provide novel insights regarding the mechanisms associated with stem cell differentiation and cancer pathology.
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Affiliation(s)
- Yanzhou Yang
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Department of Histology and Embryology, Ningxia Medical University, Yinchuan, Ningxia, P.R. China
- The Chinese University of Hong Kong–Shandong University Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HKSAR, China
| | - Hoi Hung Cheung
- The Chinese University of Hong Kong–Shandong University Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HKSAR, China
| | - JiaJie Tu
- The Chinese University of Hong Kong–Shandong University Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HKSAR, China
| | - Kai Kei Miu
- The Chinese University of Hong Kong–Shandong University Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HKSAR, China
| | - Wai Yee Chan
- The Chinese University of Hong Kong–Shandong University Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, HKSAR, China
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Babayev E, Lalioti MD, Favero F, Seli E. Cross-Talk Between FSH and Endoplasmic Reticulum Stress: A Mutually Suppressive Relationship. Reprod Sci 2015; 23:352-64. [PMID: 26342052 DOI: 10.1177/1933719115602770] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Suboptimal cellular conditions result in the accumulation of unfolded proteins in the endoplasmic reticulum (ER) and trigger ER stress. In this study, we investigated the effects of follicle stimulating hormone (FSH) on ER stress in granulosa cells (GCs) obtained from 3-week-old female C57BL6 mice 24 or 48 hours after intraperitoneal injection of 5 IU pregnant mare's serum gonadotropin (PMSG), and in primary mouse GCs in culture treated with FSH (10-100 mIU/mL) for 24 or 48 hours. Moreover, mouse GCs in culture were treated with tunicamycin (Tm) or thapsigargin (Tp), which induce ER stress by inhibiting N-glycosylation of ER proteins and ER calcium adenosine triphosphatase, respectively, and their response to FSH was evaluated. We found that FSH attenuated ER stress in mouse GCs in vivo and in vitro; messenger RNA levels of ER stress-associated genes Xbp1s, Atf6, Chop, and Casp12 were decreased upon exposure to FSH/PMSG. Activating transcription factor 4 protein levels also demonstrated consistent decrease following FSH stimulation. Both Tm and Tp treatments inhibited FSH response, ER stress-induced cells did not show any change in estradiol levels in response to FSH, whereas in untreated GCs, estradiol production increased 3-fold after incubation with FSH for 60 hours. Furthermore, ER stress-induced cells failed to demonstrate aromatase (Cyp19a1) expression upon exposure to FSH. Importantly, under high-ER stress conditions FSH stimulation was unable to downregulate the expression of ER stress-associated genes. Our findings suggest that FSH decreases ER stress in GCs under physiologic conditions. However, under conditions that cause a significant increase in ER stress, FSH response is attenuated.
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Affiliation(s)
- Elnur Babayev
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - Maria D Lalioti
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA Biogen Idec, Cambridge, MA, USA
| | - Federico Favero
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - Emre Seli
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
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The roles of endoplasmic reticulum stress response in female mammalian reproduction. Cell Tissue Res 2015; 363:589-97. [PMID: 26022337 DOI: 10.1007/s00441-015-2212-x] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 05/01/2015] [Indexed: 01/06/2023]
Abstract
Endoplasmic reticulum stress (ERS) activates a protective pathway, called the unfold protein response, for maintaining cellular homeostasis, but cellular apoptosis is triggered by excessive or persistent ERS. Several recent studies imply that the ERS response might have broader physiological roles in the various reproductive processes of female mammals, including embryo implantation, decidualization, preimplantation embryonic development, follicle atresia, and the development of the placenta. This review summarizes the existing data concerning the molecular and biological roles of the ERS response. The study of the functions of the ERS response in mammalian reproduction might provide novel insights into and an understanding of reproductive cell survival and apoptosis under physiological and pathological conditions. The ERS response is a novel signaling pathway for reproductive cell survival and apoptosis. Infertility might be a result of disturbing the ERS response during the process of female reproduction.
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