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Sawado A, Ezoe K, Miki T, Ohata K, Amagai A, Shimazaki K, Okimura T, Kato K. Fatty acid supplementation during warming improves pregnancy outcomes after frozen blastocyst transfers: a propensity score-matched study. Sci Rep 2024; 14:9343. [PMID: 38653766 PMCID: PMC11039611 DOI: 10.1038/s41598-024-60136-0] [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: 01/02/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024] Open
Abstract
This study aimed to examine the viability of human blastocysts after warming with fatty acids (FAs) using an in vitro outgrowth model and to assess pregnancy outcomes after a single vitrified-warmed blastocyst transfer (SVBT). For the experimental study, we used 446 discarded vitrified human blastocysts donated for research purposes by consenting couples. The blastocysts were warmed using FA-supplemented (FA group) or non-FA-supplemented (control group) solutions. The outgrowth area was significantly larger in the FA group (P = 0.0428), despite comparable blastocyst adhesion rates between the groups. Furthermore, the incidence of outgrowth degeneration was significantly lower in the FA group than in the control group (P = 0.0158). For the clinical study, we retrospectively analyzed the treatment records of women who underwent SVBT in natural cycles between January and August 2022. Multiple covariates that affected the outcomes were used for propensity score matching as follows: 1342 patients in the FA group were matched to 2316 patients in the control group. Pregnancy outcomes were compared between the groups. The rates of implantation, clinical pregnancy, and ongoing pregnancy significantly increased in the FA group after SVBTs (P = 0.0091-0.0266). These results indicate that warming solutions supplemented with FAs improve blastocyst outgrowth and pregnancy outcomes after SVBTs.
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Affiliation(s)
- Ayano Sawado
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Kenji Ezoe
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan.
| | - Tetsuya Miki
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Kazuki Ohata
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Ayumi Amagai
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Kiyoe Shimazaki
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Tadashi Okimura
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan
| | - Keiichi Kato
- Kato Ladies Clinic, 7-20-3 Nishishinjuku, Shinjyuku-ku, Tokyo, 160-0023, Japan.
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Zhang L, Zhao J, Lam SM, Chen L, Gao Y, Wang W, Xu Y, Tan T, Yu H, Zhang M, Liao X, Wu M, Zhang T, Huang J, Li B, Zhou QD, Shen N, Lee HJ, Ye C, Li D, Shui G, Zhang J. Low-input lipidomics reveals lipid metabolism remodelling during early mammalian embryo development. Nat Cell Biol 2024; 26:278-293. [PMID: 38302721 DOI: 10.1038/s41556-023-01341-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 12/20/2023] [Indexed: 02/03/2024]
Abstract
Lipids are indispensable for energy storage, membrane structure and cell signalling. However, dynamic changes in various categories of endogenous lipids in mammalian early embryonic development have not been systematically characterized. Here we comprehensively investigated the dynamic lipid landscape during mouse and human early embryo development. Lipid signatures of different developmental stages are distinct, particularly for the phospholipid classes. We highlight that the high degree of phospholipid unsaturation is a conserved feature as embryos develop to the blastocyst stage. Moreover, we show that lipid desaturases such as SCD1 are required for in vitro blastocyst development and blastocyst implantation. One of the mechanisms is through the regulation of unsaturated fatty-acid-mediated fluidity of the plasma membrane and apical proteins and the establishment of apical-basal polarity during development of the eight-cell embryo to the blastocyst. Overall, our study provides an invaluable resource about the remodelling of the endogenous lipidome in mammalian preimplantation embryo development and mechanistic insights into the regulation of embryogenesis and implantation by lipid unsaturation.
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Affiliation(s)
- Ling Zhang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University, Hangzhou, China
| | - Jing Zhao
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University, Hangzhou, China
| | - Sin Man Lam
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- LipidALL Technologies, Changzhou, China
| | - Lang Chen
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yingzhuo Gao
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- NHC Key Laboratory of Advanced Reproductive Medicine and Fertility (China Medical University), National Health Commission, Shenyang, China
| | - Wenjie Wang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuyan Xu
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Tianyu Tan
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hua Yu
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Min Zhang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xufeng Liao
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mengchen Wu
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Tianyun Zhang
- Liangzhu Laboratory, Zhejiang University, Hangzhou, China
| | - Jie Huang
- College of Biomedical Engineering and Instrument Science, Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China
| | - Bowen Li
- LipidALL Technologies, Changzhou, China
| | - Quan D Zhou
- Institute of Immunology, Department of Surgical Oncology of The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ning Shen
- Liangzhu Laboratory, Zhejiang University, Hangzhou, China
| | - Hyeon Jeong Lee
- College of Biomedical Engineering and Instrument Science, Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China
| | - Cunqi Ye
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Da Li
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China.
- NHC Key Laboratory of Advanced Reproductive Medicine and Fertility (China Medical University), National Health Commission, Shenyang, China.
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
- University of Chinese Academy of Sciences, Beijing, China.
| | - Jin Zhang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Liangzhu Laboratory, Zhejiang University, Hangzhou, China.
- Center of Gene and Cell Therapy and Genome Medicine of Zhejiang Province, Hangzhou, China.
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3
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Sun S, Xu H, Zhao W, Li Q, Yuan Y, Zhang G, Li S, Wang B, Zhang W, Gao X, Zheng J, Zhang Q. PA suppresses antitumor immunity of T cells by disturbing mitochondrial activity through Akt/mTOR-mediated Ca 2+ flux. Cancer Lett 2024; 581:216511. [PMID: 38013049 DOI: 10.1016/j.canlet.2023.216511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 11/07/2023] [Accepted: 11/20/2023] [Indexed: 11/29/2023]
Abstract
Deciphering the mechanisms behind how T cells become exhausted and regulatory T cells (Tregs) differentiate in a tumor microenvironment (TME) will significantly benefit cancer immunotherapy. A common metabolic alteration feature in TME is lipid accumulation, associated with T cell exhaustion and Treg differentiation. However, the regulatory role of free fatty acids (FFA) on T cell antitumor immunity has yet to be clearly illustrated. Our study observed that palmitic acid (PA), the most abundant saturated FFA in mouse plasma, enhanced T cell exhaustion and Tregs population in TME and increased tumor growth. In contrast, oleic acid (OA), a monounsaturated FFA, rescued PA-induced T cell exhaustion, decreased Treg population, and ameliorated T cell antitumor immunity in an obese mouse model. Mechanistically, mitochondrial metabolic activity is critical in maintaining T cell function, which PA attenuated. PA-induced T cell exhaustion and Treg formation depended on CD36 and Akt/mTOR-mediated calcium signaling. The study described a new mechanism of PA-induced downregulation of antitumor immunity of T cells and the therapeutic potential behind its restoration by targeting PA.
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Affiliation(s)
- Shishuo Sun
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Heng Xu
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Wanxin Zhao
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Qihong Li
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Yifan Yuan
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Guopeng Zhang
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Shuyu Li
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Bixi Wang
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Wei Zhang
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Xiaoge Gao
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Junnian Zheng
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, PR China.
| | - Qing Zhang
- Cancer Institute, the First Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, PR China; Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, PR China.
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Dionne G, Calder M, Betts DH, Rafea BA, Watson AJ. Expression and localization of NRF2/Keap1 signalling pathway genes in mouse preimplantation embryos exposed to free fatty acids. Gene Expr Patterns 2022; 46:119281. [PMID: 36243294 DOI: 10.1016/j.gep.2022.119281] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 09/06/2022] [Accepted: 10/07/2022] [Indexed: 11/04/2022]
Abstract
Obese women experience greater incidence of infertility, with reproductive tracts exposing preimplantation embryos to elevated free fatty acids (FFA) such as palmitic acid (PA) and oleic acid (OA). PA treatment impairs mouse preimplantation development in vitro, while OA co-treatment rescues blastocyst development of PA treated embryos. In the present study, we investigated the effects of PA and OA treatment on NRF2/Keap1 localization, and relative antioxidant enzyme (Glutathione peroxidase; Gpx1, Catalase; Cat, Superoxide dismutase; Sod1 and γ-Glutamylcysteine ligase catalytic unit; Gclc) mRNA levels, during in vitro mouse preimplantation embryo development. Female mice were superovulated, mated, and embryos cultured in the presence of bovine Serum albumin (BSA) control or PA, or OA, alone (each at 100 μM) or PA + OA combined (each at 100 μM) treatment. NRF2 displayed nuclear localization at all developmental stages, whereas Keap1 primarily displayed cytoplasmic localization throughout control mouse preimplantation development in vitro. Relative transcript levels of Nrf2, Keap1, and downstream antioxidants significantly increased throughout control mouse preimplantation development in vitro. PA treatment significantly decreased blastocyst development and the levels of nuclear NRF2, while OA and PA + OA treatments did not. PA and OA treatments did not impact relative mRNA levels of Nrf2, Keap1, Gpx1, Cat, Sod1 or Gclc. Our outcomes demonstrate that cultured mouse embryos display nuclear NRF2, but that PA treatment reduces nuclear NRF2 and thus likely impacts NRF2/KEAP1 stress response mechanisms. Further studies should investigate whether free fatty acid effects on NRF2/KEAP1 contribute to the reduced fertility displayed by obese patients.
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Affiliation(s)
- Grace Dionne
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Michele Calder
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Dean H Betts
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Basim Abu Rafea
- Department of Obstetrics and Gynaecology, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Andrew J Watson
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada.
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5
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Di Berardino C, Peserico A, Capacchietti G, Zappacosta A, Bernabò N, Russo V, Mauro A, El Khatib M, Gonnella F, Konstantinidou F, Stuppia L, Gatta V, Barboni B. High-Fat Diet and Female Fertility across Lifespan: A Comparative Lesson from Mammal Models. Nutrients 2022; 14:nu14204341. [PMID: 36297035 PMCID: PMC9610022 DOI: 10.3390/nu14204341] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/10/2022] [Accepted: 10/14/2022] [Indexed: 11/18/2022] Open
Abstract
Female reproduction focuses mainly on achieving fully grown follicles and competent oocytes to be successfully fertilized, as well as on nourishing the developing offspring once pregnancy occurs. Current evidence demonstrates that obesity and/or high-fat diet regimes can perturbate these processes, leading to female infertility and transgenerational disorders. Since the mechanisms and reproductive processes involved are not yet fully clarified, the present review is designed as a systematic and comparative survey of the available literature. The available data demonstrate the adverse influences of obesity on diverse reproductive processes, such as folliculogenesis, oogenesis, and embryo development/implant. The negative reproductive impact may be attributed to a direct action on reproductive somatic and germinal compartments and/or to an indirect influence mediated by the endocrine, metabolic, and immune axis control systems. Overall, the present review highlights the fragmentation of the current information limiting the comprehension of the reproductive impact of a high-fat diet. Based on the incidence and prevalence of obesity in the Western countries, this topic becomes a research challenge to increase self-awareness of dietary reproductive risk to propose solid and rigorous preventive dietary regimes, as well as to develop targeted pharmacological interventions.
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Affiliation(s)
- Chiara Di Berardino
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Alessia Peserico
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
- Correspondence:
| | - Giulia Capacchietti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Alex Zappacosta
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Nicola Bernabò
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council, A. Buzzati-Traverso Campus, via E. Ramarini 32, Monterotondo Scalo, 00015 Rome, Italy
| | - Valentina Russo
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Annunziata Mauro
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Mohammad El Khatib
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Francesca Gonnella
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
- Department of Psychological Health and Territorial Sciences, School of Medicine and Health Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Unit of Molecular Genetics, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Fani Konstantinidou
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
- Department of Psychological Health and Territorial Sciences, School of Medicine and Health Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Unit of Molecular Genetics, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Liborio Stuppia
- Department of Psychological Health and Territorial Sciences, School of Medicine and Health Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Unit of Molecular Genetics, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Valentina Gatta
- Department of Psychological Health and Territorial Sciences, School of Medicine and Health Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Unit of Molecular Genetics, Center for Advanced Studies and Technology (CAST), “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Barbara Barboni
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
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Moorkens K, Leroy JLMR, Verheyen S, Marei WFA. Effects of an obesogenic diet on the oviduct depend on the duration of feeding. PLoS One 2022; 17:e0275379. [PMID: 36174086 PMCID: PMC9522283 DOI: 10.1371/journal.pone.0275379] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/15/2022] [Indexed: 12/04/2022] Open
Abstract
Research question How long does it take for an obesogenic (high-fat/high-sugar, HF/HS) diet to influence the oviductal microenvironment? What are the affected cellular pathways and are they dependent on the genetic background of the mouse model? Design Female Swiss (outbred) and C57BL/6N (B6, inbred) mice were fed either a control (10% fat) or HF/HS (60% fat, 20% fructose) diet. Body weight was measured weekly. Mice were sacrificed at 3 days (3d), 1 week (1w), 4w, 8w, 12w and 16w on the diet (n = 5 per treatment per time point). Total cholesterol concentrations and inflammatory cytokines were measured in serum. Oviductal epithelial cells (OECs) were used to study the expression of genes involved in (mitochondrial) oxidative stress (OS), endoplasmic reticulum (ER) stress and inflammation using qPCR. Results Body weight and blood cholesterol increased significantly in the HF/HS mice in both strains compared to controls. In Swiss mice, HF/HS diet acutely increased ER-stress and OS-related genes in the OECs already after 3d. Subsequently, mitochondrial and cytoplasmic antioxidants were upregulated and ER-stress was alleviated at 1w. After 4-8w (mid-phase), the expression of ER-stress and OS-related genes was increased again and persisted throughout the late-phase (12-16w). Serum inflammatory cytokines and inflammatory marker-gene expression in the OECs were increased only in the late-phase. Some of the OEC stress responses were stronger or earlier in the B6. Conclusions OECs are sensitive to an obesogenic diet and may exhibit acute stress responses already after a few days of feeding. This may impact the oviductal microenvironment and contribute to diet-induced subfertility.
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Affiliation(s)
- Kerlijne Moorkens
- Department of Veterinary Sciences, Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, University of Antwerp, Wilrijk, Antwerp, Belgium
- * E-mail:
| | - Jo L. M. R. Leroy
- Department of Veterinary Sciences, Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, University of Antwerp, Wilrijk, Antwerp, Belgium
| | - Sara Verheyen
- Department of Veterinary Sciences, Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, University of Antwerp, Wilrijk, Antwerp, Belgium
| | - Waleed F. A. Marei
- Department of Veterinary Sciences, Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, University of Antwerp, Wilrijk, Antwerp, Belgium
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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7
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Baddela VS, Michaelis M, Sharma A, Plinski C, Viergutz T, Vanselow J. Estradiol production of granulosa cells is unaffected by the physiological mix of non-esterified fatty acids in follicular fluid. J Biol Chem 2022; 298:102477. [PMID: 36096202 PMCID: PMC9576879 DOI: 10.1016/j.jbc.2022.102477] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 11/25/2022] Open
Abstract
Ovarian cycle is controlled by circulating levels of the steroid hormone 17-β-estradiol, which is predominantly synthesized by the granulosa cells (GCs) of ovarian follicles. Our earlier studies showed that unsaturated fatty acids (USFs) downregulate and saturated fatty acids (SFAs) upregulate estradiol production in GCs. However, it was unclear whether pituitary gonadotropins induce accumulation of free fatty acids (FFAs) in the follicular fluid since follicle-stimulating hormone induces and luteinizing hormone inhibits estradiol production in the mammalian ovary. Interestingly, we show here the gas chromatography analysis of follicular fluid revealed no differential accumulation of FFAs between pre- and post-luteinizing hormone surge follicles. We therefore wondered how estradiol production is regulated in the physiological context, as USFs and SFAs are mutually present in the follicular fluid. We thus performed in vitro primary GC cultures with palmitate, palmitoleate, stearate, oleate, linoleate, and alpha-linolenate, representing >80% of the FFA fraction in the follicular fluid, and analyzed 62 different cell culture conditions to understand the regulation of estradiol biosynthesis under diverse FFA combinations. Our analyses showed co-supplementation of SFAs with USFs rescued estradiol production by restoring gonadotropin receptors and aromatase, antagonizing the inhibitory effects of USFs. Furthermore, transcriptome data of oleic acid–treated GCs indicated USFs induce the ERK and Akt signaling pathways. We show SFAs inhibit USF-induced ERK1/2 and Akt activation, wherein ERK1/2 acts as a negative regulator of estradiol synthesis. We propose SFAs are vital components of the follicular fluid, without which gonadotropin signaling and the ovarian cycle would probably be shattered by USFs.
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Affiliation(s)
- Vijay Simha Baddela
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), Wilhelm Stahl Allee 2, 18196 Dummerstorf, Germany.
| | - Marten Michaelis
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), Wilhelm Stahl Allee 2, 18196 Dummerstorf, Germany
| | - Arpna Sharma
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), Wilhelm Stahl Allee 2, 18196 Dummerstorf, Germany
| | - Christian Plinski
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), Wilhelm Stahl Allee 2, 18196 Dummerstorf, Germany
| | - Torsten Viergutz
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), Wilhelm Stahl Allee 2, 18196 Dummerstorf, Germany
| | - Jens Vanselow
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), Wilhelm Stahl Allee 2, 18196 Dummerstorf, Germany
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8
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Yang T, Zhao J, Liu F, Li Y. Lipid metabolism and endometrial receptivity. Hum Reprod Update 2022; 28:858-889. [PMID: 35639910 DOI: 10.1093/humupd/dmac026] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/27/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Obesity has now been recognized as a high-risk factor for reproductive health. Although remarkable advancements have been made in ART, a considerable number of infertile obese women still suffer from serial implantation failure, despite the high quality of embryos transferred. Although obesity has long been known to exert various deleterious effects on female fertility, the underlying mechanisms, especially the roles of lipid metabolism in endometrial receptivity, remain largely elusive. OBJECTIVE AND RATIONALE This review summarizes current evidence on the impacts of several major lipids and lipid-derived mediators on the embryonic implantation process. Emerging methods for evaluating endometrial receptivity, for example transcriptomic and lipidomic analysis, are also discussed. SEARCH METHODS The PubMed and Embase databases were searched using the following keywords: (lipid or fatty acid or prostaglandin or phospholipid or sphingolipid or endocannabinoid or lysophosphatidic acid or cholesterol or progesterone or estrogen or transcriptomic or lipidomic or obesity or dyslipidemia or polycystic ovary syndrome) AND (endometrial receptivity or uterine receptivity or embryo implantation or assisted reproductive technology or in vitro fertilization or embryo transfer). A comprehensive literature search was performed on the roles of lipid-related metabolic pathways in embryo implantation published between January 1970 and March 2022. Only studies with original data and reviews published in English were included in this review. Additional information was obtained from references cited in the articles resulting from the literature search. OUTCOMES Recent studies have shown that a fatty acids-related pro-inflammatory response in the embryo-endometrium boundary facilitates pregnancy via mediation of prostaglandin signaling. Phospholipid-derived mediators, for example endocannabinoids, lysophosphatidic acid and sphingosine-1-phosphate, are associated with endometrial receptivity, embryo spacing and decidualization based on evidence from both animal and human studies. Progesterone and estrogen are two cholesterol-derived steroid hormones that synergistically mediate the structural and functional alterations in the uterus ready for blastocyst implantation. Variations in serum cholesterol profiles throughout the menstrual cycle imply a demand for steroidogenesis at the time of window of implantation (WOI). Since 2002, endometrial transcriptomic analysis has been serving as a diagnostic tool for WOI dating. Numerous genes that govern lipid homeostasis have been identified and, based on specific alterations of lipidomic signatures differentially expressed in WOI, lipidomic analysis of endometrial fluid provides a possibility for non-invasive diagnosis of lipids alterations during the WOI. WIDER IMPLICATIONS Given that lipid metabolic dysregulation potentially plays a role in infertility, a better understanding of lipid metabolism could have significant clinical implications for the diagnosis and treatment of female reproductive disorders.
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Affiliation(s)
- Tianli Yang
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, P.R. China.,Clinical Research Center for Women's Reproductive Health in Hunan Province, Changsha, P.R. China
| | - Jing Zhao
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, P.R. China.,Clinical Research Center for Women's Reproductive Health in Hunan Province, Changsha, P.R. China
| | - Feng Liu
- National Clinical Research Center for Metabolic Diseases, Metabolic Syndrome Research Center, and Key Laboratory of Diabetes Immunology, Ministry of Education, The Second Xiangya Hospital of Central South University, Changsha, P.R. China
| | - Yanping Li
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, P.R. China.,Clinical Research Center for Women's Reproductive Health in Hunan Province, Changsha, P.R. China
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9
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Leung ZCL, Abu Rafea B, Watson AJ, Betts DH. Free fatty acid treatment of mouse preimplantation embryos demonstrates contrasting effects of palmitic acid and oleic acid on autophagy. Am J Physiol Cell Physiol 2022; 322:C833-C848. [PMID: 35319901 PMCID: PMC9273280 DOI: 10.1152/ajpcell.00414.2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Treatment of mouse preimplantation embryos with elevated palmitic acid (PA) reduces blastocyst development, while co-treatment with PA and oleic acid (OA) together rescues blastocyst development to control frequencies. To understand the mechanistic effects of PA and OA treatment on early mouse embryos, we investigated the effects of PA and OA, alone and in combination, on autophagy during preimplantation development in vitro. We hypothesized that PA would alter autophagic processes and that OA co-treatment would restore control levels of autophagy. Two-cell stage mouse embryos were placed into culture medium supplemented with 100 μM PA, 250 μM OA, 100 μM PA and 250 μM OA, or KSOMaa medium alone (control) for 18 - 48 h. The results demonstrated that OA co-treatment slowed developmental progression after 30 h of co-treatment but restored control blastocyst frequencies by 48 h. PA treatment elevated LC3-II puncta and p62 levels per cell while OA co-treatment returned to control levels of autophagy by 48 h. Autophagic mechanisms are altered by non-esterified fatty acid (NEFA) treatments during mouse preimplantation development in vitro, where PA elevates autophagosome formation and reduces autophagosome degradation levels, while co-treatment with OA reversed these PA-effects. Autophagosome-lysosome co-localization only differed between PA and OA alone treatment groups. These findings advance our understanding of the effects of free fatty acid exposure on preimplantation development, and they uncover principles that may underlie the associations between elevated fatty acid levels and overall declines in reproductive fertility.
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Affiliation(s)
- Zuleika C L Leung
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Canada.,Department of Physiology and Pharmacology, The University of Western Ontario, London Ontario, Canada.,The Children's Health Research Institute - Lawson Health Research Institute, London, Ontario, Canada
| | - Basim Abu Rafea
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Canada.,The Children's Health Research Institute - Lawson Health Research Institute, London, Ontario, Canada
| | - Andrew J Watson
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Canada.,Department of Physiology and Pharmacology, The University of Western Ontario, London Ontario, Canada.,The Children's Health Research Institute - Lawson Health Research Institute, London, Ontario, Canada
| | - Dean H Betts
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Canada.,Department of Physiology and Pharmacology, The University of Western Ontario, London Ontario, Canada.,The Children's Health Research Institute - Lawson Health Research Institute, London, Ontario, Canada
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10
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Aardema H, Bertijn I, van Tol HTA, Rijneveld A, Vernooij JCM, Gadella BM, Vos PLAM. Fatty Acid Supplementation During in vitro Embryo Production Determines Cryosurvival Characteristics of Bovine Blastocysts. Front Cell Dev Biol 2022; 10:837405. [PMID: 35356284 PMCID: PMC8959877 DOI: 10.3389/fcell.2022.837405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
In vitro production (IVP) embryos have a reduced quality and poor cryotolerance in comparison to in vivo embryos. This study investigated whether free fatty acid (FFA) conditions, fatty acid free (FAF)- synthetic oviduct fluid (SOF) without or with 25 μM of saturated stearic (C18:0) or unsaturated oleic (C18:1) acid during the first 5 IVP days, relate to quality and cryosurvival of day 8 blastocysts. Apart from the blastocyst scores, both 1) number and size of lipid droplets of fresh blastocysts and 2) total number and apoptotic and necrotic cells, before and after freezing-thawing, were scored by confocal microscopy. Blastocyst rates were significantly lower in the FAF SOF condition in comparison to other groups. Interestingly, blastocysts originating from the C18:1 group, with a significantly higher lipid content, and blastocysts from the FAF SOF group demonstrated a high cryosurvival rate (70.1 and 67.4%, respectively) comparable with in vivo blastocysts (68%), in contrast to the poor cryosurvival of C18:0 exposed embryos (17.6%). In all freeze-thawed embryos the average amount of apoptotic and necrotic cells increased albeit that the C18:0 condition rates were higher (43.2%) when compared to C18:1 (26.0%) and FAF SOF conditions (26.5%). The current data show that FFA administered during early embryonic development significantly affect the cryotolerance of blastocysts.
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Affiliation(s)
- H. Aardema
- *Correspondence: H. Aardema, ; B. M. Gadella,
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11
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Calder MD, Chen R, MacDonald A, MacNeily Z, Leung ZCL, Adus S, Cui S, Betts DH, Rafea BA, Watson AJ. Effects of palmitic acid on localization of embryo cell fate and blastocyst formation gene products. Reproduction 2022; 163:133-143. [PMID: 35038315 PMCID: PMC8859922 DOI: 10.1530/rep-21-0354] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 01/13/2022] [Indexed: 12/04/2022]
Abstract
As obese and overweight patients commonly display hyperlipidemia and are increasingly accessing fertility clinics for their conception needs, our studies are directed at understanding the effects of hyperlipidemia on early pregnancy. We have focused on investigating palmitic acid (PA) and oleic acid (OA) treatment alone and in combination from the mouse two-cell stage embryos as a model for understanding their effects on the mammalian preimplantation embryo. We recently reported that PA exerts a negative effect on mouse two-cell progression to the blastocyst stage, whereas OA co-treatment reverses that negative effect. In the present study, we hypothesized that PA treatment of mouse embryos would disrupt proper localization of cell fate determining and blastocyst formation gene products and that co-treatment with OA would reverse these effects. Our results demonstrate that PA treatment significantly (P < 0.05) reduces blastocyst development and cell number but did not prevent nuclear localization of YAP in outer cells. PA treatment significantly reduced the number of OCT4+ and CDX2+ nuclei. PA-treated embryos had lower expression of blastocyst formation proteins (E-cadherin, ZO-1 and Na/K-ATPase alpha1 subunit). Importantly, co-treatment of embryos with OA reversed PA-induced effects on blastocyst development and increased inner cell mass (ICM) and trophectoderm (TE) cell numbers and expression of blastocyst formation proteins. Our findings demonstrate that PA treatment does not impede cell fate gene localization but does disrupt proper blastocyst formation gene localization during mouse preimplantation development. OA treatment is protective and reverses PA's detrimental effects. The results advance our understanding of the impact of FFA exposure on mammalian preimplantation development.
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Affiliation(s)
- Michele D Calder
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Robert Chen
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Anastasia MacDonald
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Zoe MacNeily
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Zuleika Chin Lai Leung
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Samira Adus
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Shiyu Cui
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Dean H Betts
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Basim Abu Rafea
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
| | - Andrew J Watson
- Department of Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, The University of Western Ontario, London, Ontario, Canada
- The Children’s Health Research Institute – Lawson Health Research Institute, London, Ontario, Canada
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12
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Li Q, Guo S, Yang C, Liu X, Chen X, He J, Tong C, Ding Y, Peng C, Geng Y, Mu X, Liu T, Li F, Wang Y, Gao R. High-fat diet-induced obesity primes fatty acid β-oxidation impairment and consequent ovarian dysfunction during early pregnancy. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:887. [PMID: 34164521 PMCID: PMC8184480 DOI: 10.21037/atm-21-2027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background Obesity is associated with many adverse effects on female fertility. Obese women have a higher likelihood of developing ovulatory dysfunction due to dysregulation of the hypothalamic-pituitary-ovarian axis. However, the effect of obesity on ovarian function during early pregnancy needs to be further assessed. Methods C57BL6/J mice were given a high-fat diet (HFD) for 12 weeks to induce obesity. An in vitro high-fat model was established by treating the human ovarian granulosa cell line KGN with oleic acid and palmitic acid. Ovarian morphology of obese mice in early pregnancy was assessed by hematoxylin and eosin staining and ovarian function was assessed by enzyme-linked immunosorbent assay, western blotting, and immunohistochemistry. Oil Red O staining and transmission electron microscopy were used to detect fatty acid accumulation. Specific markers relating to the ovarian functional mechanism were assessed by real-time PCR, western blotting, lactate detection, adenosine triphosphate (ATP) detection, biochemical analyses, and enzyme-linked immunosorbent assay. Results The results of this study showed that during early pregnancy, the number of corpus lutea, serum estradiol and progesterone levels, and the expression of the steroid biosynthesis-related protein CYP19A1 (aromatase), CYP11A1 (cholesterol side chain cleavage enzyme), and StAR (steroidogenic acute regulatory protein), were significantly increased in HFD mice. Mice fed an HFD also showed a significant increase in ovarian lipid accumulation on day 7 of pregnancy. Genes involved in fatty acid synthesis (Acsl4 and Elovl5), and fatty acid uptake and transport (Slc27a4), together with the β-oxidation rate-limiting enzyme Cpt1a, were significantly upregulated in HFD mice. Specifically, there was abnormal elevation of ATP and aberrant expression of tricarboxylic acid cycle (TCA)- and electron transport chain (ETC)-related genes in the ovaries of pregnant HFD mice. KGN cells treated with etomoxir targeting β-oxidation of fatty acid showed decreased TCA cycle and ETC related gene expression. The elevation of ATP and estradiol and progesterone levels was reversed. Conclusions During early pregnancy, HFD-induced obesity increases fatty acid β-oxidation, which in turn increases TCA cycle and ETC related gene expression, leading to increased ATP production and ovarian dysfunction.
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Affiliation(s)
- Qingying Li
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Sujuan Guo
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Chengshun Yang
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xueqing Liu
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xuemei Chen
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Junlin He
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Chao Tong
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yubin Ding
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Chuan Peng
- The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yanqing Geng
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xinyi Mu
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Taihang Liu
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Fangfang Li
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Yingxiong Wang
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Rufei Gao
- Laboratory of Reproductive Biology, School of Public Health and Management, Chongqing Medical University, Chongqing, China.,Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
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