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Wang B, Gao M, Yao Y, Shen H, Li H, Sun J, Wang L, Zhang X. Enhancing endometrial receptivity: the roles of human chorionic gonadotropin in autophagy and apoptosis regulation in endometrial stromal cells. Reprod Biol Endocrinol 2024; 22:37. [PMID: 38576003 PMCID: PMC10993617 DOI: 10.1186/s12958-024-01205-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/12/2024] [Indexed: 04/06/2024] Open
Abstract
Inadequate endometrial receptivity often results in embryo implantation failure and miscarriage. Human chorionic gonadotropin (hCG) is a key signaling molecule secreted during early embryonic development, which regulates embryonic maternal interface signaling and promotes embryo implantation. This study aimed to examine the impact of hCG on endometrial receptivity and its underlying mechanisms. An exploratory study was designed, and endometrial samples were obtained from women diagnosed with simple tubal infertility or male factor infertile (n = 12) and recurrent implantation failure (RIF, n = 10). Using reverse transcription-quantitative PCR and western blotting, luteinizing hormone (LH)/hCG receptor (LHCGR) levels and autophagy were detected in the endometrial tissues. Subsequently, primary endometrial stromal cells (ESCs) were isolated from these control groups and treated with hCG to examine the presence of LHCGR and markers of endometrial receptivity (HOXA10, ITGB3, FOXO1, LIF, and L-selectin ligand) and autophagy-related factors (Beclin1, LC3, and P62). The findings revealed that the expressions of receptivity factors, LHCGR, and LC3 were reduced in the endometrial tissues of women with RIF compared with the control group, whereas the expression of P62 was elevated. The administration of hCG to ESCs specifically activated LHCGR, stimulating an increase in the endometrial production of HOXA10, ITGB3, FOXO1, LIF and L-selectin ligands. Furthermore, when ESCs were exposed to 0.1 IU/mL hCG for 72 h, the autophagy factors Beclin1 and LC3 increased within the cells and P62 decreased. Moreover, the apoptotic factor Bax increased and Bcl-2 declined. However, when small interfering RNA was used to knock down LHCGR, hCG was less capable of controlling endometrial receptivity and autophagy molecules in ESCs. In addition, hCG stimulation enhanced the phosphorylation of ERK1/2 and mTOR proteins. These results suggest that women with RIF exhibit lower levels of LHCGR and compromised autophagy function in their endometrial tissues. Thus, hCG/LHCGR could potentially improve endometrial receptivity by modulating autophagy and apoptosis.
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Affiliation(s)
- Bin Wang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Mingxia Gao
- Reproductive Medicine Center, The First Hospital of Lanzhou University, Lanzhou, China.
- Key Laboratory for Reproductive Medicine and Embryo, Gansu Province, Lanzhou, China.
| | - Ying Yao
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Haofei Shen
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Hongwei Li
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Jingjing Sun
- Medical Laboratory Center, The First Hospital of Lanzhou University, Lanzhou, China
| | - Liyan Wang
- Reproductive Medicine Center, The First Hospital of Lanzhou University, Lanzhou, China
- Key Laboratory for Reproductive Medicine and Embryo, Gansu Province, Lanzhou, China
| | - Xuehong Zhang
- Reproductive Medicine Center, The First Hospital of Lanzhou University, Lanzhou, China.
- Key Laboratory for Reproductive Medicine and Embryo, Gansu Province, Lanzhou, China.
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2
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Jackson BT, Finley LWS. Metabolic regulation of the hallmarks of stem cell biology. Cell Stem Cell 2024; 31:161-180. [PMID: 38306993 PMCID: PMC10842269 DOI: 10.1016/j.stem.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 02/04/2024]
Abstract
Stem cells perform many different functions, each of which requires specific metabolic adaptations. Over the past decades, studies of pluripotent and tissue stem cells have uncovered a range of metabolic preferences and strategies that correlate with or exert control over specific cell states. This review aims to describe the common themes that emerge from the study of stem cell metabolism: (1) metabolic pathways supporting stem cell proliferation, (2) metabolic pathways maintaining stem cell quiescence, (3) metabolic control of cellular stress responses and cell death, (4) metabolic regulation of stem cell identity, and (5) metabolic requirements of the stem cell niche.
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Affiliation(s)
- Benjamin T Jackson
- Cell Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Louis V. Gerstner Jr. Graduate School of Biomedical Sciences, New York, NY, USA
| | - Lydia W S Finley
- Cell Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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3
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Chen HL, Jin WL. Diapause-like Drug-Tolerant Persister State: The Key to Nirvana Rebirth. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:228. [PMID: 38399515 PMCID: PMC10890489 DOI: 10.3390/medicina60020228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024]
Abstract
Cancer is one of the leading causes of death in the world. Various drugs have been developed to eliminate it but to no avail because a tumor can go into dormancy to avoid therapy. In the past few decades, tumor dormancy has become a popular topic in cancer therapy. Recently, there has been an important breakthrough in the study of tumor dormancy. That is, cancer cells can enter a reversible drug-tolerant persister (DTP) state to avoid therapy, but no exact mechanism has been found. The study of the link between the DTP state and diapause seems to provide an opportunity for a correct understanding of the mechanism of the DTP state. Completely treating cancer and avoiding dormancy by targeting the expression of key genes in diapause are possible. This review delves into the characteristics of the DTP state and its connection with embryonic diapause, and possible treatment strategies are summarized. The authors believe that this review will promote the development of cancer therapy.
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Affiliation(s)
- Han-Lin Chen
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China;
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Wei-Lin Jin
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, China;
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, Lanzhou 730000, China
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4
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Samare-Najaf M, Neisy A, Samareh A, Moghadam D, Jamali N, Zarei R, Zal F. The constructive and destructive impact of autophagy on both genders' reproducibility, a comprehensive review. Autophagy 2023; 19:3033-3061. [PMID: 37505071 PMCID: PMC10621263 DOI: 10.1080/15548627.2023.2238577] [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: 10/29/2022] [Revised: 07/08/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023] Open
Abstract
Reproduction is characterized by a series of massive renovations at molecular, cellular, and tissue levels. Recent studies have strongly tended to reveal the involvement of basic molecular pathways such as autophagy, a highly conserved eukaryotic cellular recycling, during reproductive processes. This review comprehensively describes the current knowledge, updated to September 2022, of autophagy contribution during reproductive processes in males including spermatogenesis, sperm motility and viability, and male sex hormones and females including germ cells and oocytes viability, ovulation, implantation, fertilization, and female sex hormones. Furthermore, the consequences of disruption in autophagic flux on the reproductive disorders including oligospermia, azoospermia, asthenozoospermia, teratozoospermia, globozoospermia, premature ovarian insufficiency, polycystic ovarian syndrome, endometriosis, and other disorders related to infertility are discussed as well.Abbreviations: AKT/protein kinase B: AKT serine/threonine kinase; AMPK: AMP-activated protein kinase; ATG: autophagy related; E2: estrogen; EDs: endocrine disruptors; ER: endoplasmic reticulum; FSH: follicle stimulating hormone; FOX: forkhead box; GCs: granulosa cells; HIF: hypoxia inducible factor; IVF: in vitro fertilization; IVM: in vitro maturation; LCs: Leydig cells; LDs: lipid droplets; LH: luteinizing hormone; LRWD1: leucine rich repeats and WD repeat domain containing 1; MAP1LC3: microtubule associated protein 1 light chain 3; MAPK: mitogen-activated protein kinase; MTOR: mechanistic target of rapamycin kinase; NFKB/NF-kB: nuclear factor kappa B; P4: progesterone; PCOS: polycystic ovarian syndrome; PDLIM1: PDZ and LIM domain 1; PI3K: phosphoinositide 3-kinase; PtdIns3P: phosphatidylinositol-3-phosphate; PtdIns3K: class III phosphatidylinositol 3-kinase; POI: premature ovarian insufficiency; ROS: reactive oxygen species; SCs: Sertoli cells; SQSTM1/p62: sequestosome 1; TSGA10: testis specific 10; TST: testosterone; VCP: vasolin containing protein.
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Affiliation(s)
- Mohammad Samare-Najaf
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Kerman Regional Blood Transfusion Center, Kerman, Iran
| | - Asma Neisy
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Samareh
- Department of Biochemistry, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Delaram Moghadam
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Medicinal Chemistry, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Navid Jamali
- Department of Laboratory Sciences, Sirjan School of Medical Sciences, Sirjan, Iran
| | - Reza Zarei
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Zal
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
- Infertility Research Centre, Shiraz University of Medical Sciences, Shiraz, Iran
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5
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Adel N, Abdulghaffar S, Elmahdy M, Nabil M, Ghareeb D, Maghraby H. Autophagy-related gene and protein expressions during blastocyst development. J Assist Reprod Genet 2023; 40:323-331. [PMID: 36576685 PMCID: PMC9935768 DOI: 10.1007/s10815-022-02698-4] [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] [Accepted: 12/16/2022] [Indexed: 12/29/2022] Open
Abstract
PURPOSE This study aims to examine the expression of autophagic genes and proteins during blastocyst development and differentiation. METHODS This is a prospective cohort study. Between March 2018 and November 2019, 30 females aged 30.13 ± 4.83 years underwent an intracytoplasmic sperm injection (ICSI) cycle at Madina Fertility Center. ICSI was used to develop and incubate 82 leftover embryos to day 5. Then, the embryos were divided into two groups based on their developmental structure: group D (n = 49) included embryos that developed into blastocysts, whereas group A (n = 33) included arrested embryos. These embryos were used to investigate the autophagic gene and protein expressions. The current study was approved by the Clinical Trial Ethical Committee of the Faculty of Medicine, Alexandria University, following the ethical standards of scientific research (Registration no. 0303721). RESULTS Embryos that developed into blastocysts on day 5 (group D) had significantly higher relative expression of the LC3 gene (1.11 ± 0.52) and beclin-1 gene (1.43 ± 0.34) and beclin-1 protein expression (3.8 ± 0.028) than those that did not develop into blastocysts on day 5 (group A) [0.72 ± 0.18 (P = 0.03), 0.35 ± 0.12 (P = 0.0001), and 3.14 ± 0.05, (P = 0.0001), respectively]. In contrast, mTOR and PIK3C3 protein expression was significantly higher in group A (arrested embryos) than those in group D (developed embryos) (P = 0.007 and P = 0.0001, respectively). Furthermore, the expression of the eIF4E gene was significantly lower in group D embryos (0.32 ± 0.07) than that in group A embryos (4.38 ± 1.16) (P = 0.0001). CONCLUSIONS This work identifies autophagy as a well regulated process required to maintain cell allocation and differentiation during late preimplantation embryo developmental stages.
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Affiliation(s)
- Nehal Adel
- Madina Fertility Center, Madina Women's Hospital, 5 Ahmed Yehia Street, Smouha, Alexandria, Zezenia, 21563, Egypt.
| | - Shaymaa Abdulghaffar
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, 21563, Egypt
| | - Mohamed Elmahdy
- Obstetrics and Gynecology Department, Faculty of Medicine, Alexandria University, Alexandria, 21563, Egypt
| | - Mohamed Nabil
- Pharmacology Department, Faculty of Pharmacy, New Valley University, Kharga, 72511, Egypt
| | - Doaa Ghareeb
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, 21563, Egypt
| | - Hassan Maghraby
- Obstetrics and Gynecology Department, Faculty of Medicine, Alexandria University, Alexandria, 21563, Egypt
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6
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Cheng J, Sha Z, Li J, Li B, Luo X, Zhang Z, Zhou Y, Chen S, Wang Y. Progress on the Role of Estrogen and Progesterone Signaling in Mouse Embryo Implantation and Decidualization. Reprod Sci 2023; 30:1746-1757. [PMID: 36694081 DOI: 10.1007/s43032-023-01169-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 12/28/2022] [Indexed: 01/25/2023]
Abstract
Embryo implantation and decidualization are key steps in establishing a successful pregnancy. Defects in embryo implantation and decidualization can cause a series of adverse chain reactions which can contribute to harmful pregnancy outcomes, such as embryo growth retardation, preeclampsia, miscarriage, premature birth, and so on. Approximately 75% of failed pregnancies are considered to be due to embryo implantation failure or defects. Decidualization, characterized by proliferation and differentiation of uterine stromal cells, is one of the essential conditions for blastocyst implantation, placental formation, and maintenance of pregnancy and is indispensable for the establishment of pregnancy in many species. Embryo implantation and decidualization are closely regulated by estrogen and progesterone secreted by the ovaries. Many cellular events and molecular signaling network pathways are involved in this process. This article reviews the recent advances in the molecular mechanisms of estrogen- and progesterone-regulating uterine receptivity establishment, blastocyst implantation, and decidualization, in order to better understand the underlying molecular mechanisms of hormonal regulation of embryo implantation and to develop new strategies for preventing or treating embryo implantation defects and improving the pregnancy rate of women.
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Affiliation(s)
- Jianghong Cheng
- Xi'An Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Xi'An Medical University, Xi'An 710021, China
| | - Zizhuo Sha
- Xi'An Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Xi'An Medical University, Xi'An 710021, China
| | - Junyang Li
- Xi'An Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Xi'An Medical University, Xi'An 710021, China
| | - Bixuan Li
- Xi'An Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Xi'An Medical University, Xi'An 710021, China
| | - Xianyang Luo
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, People's Republic of China.,Xiamen Key Laboratory of Otolaryngology Head and Neck Surgery, Xiamen, 361003, China.,Teaching Hospital of Fujian Medical University, Fuzhou, Fujian, 350004, People's Republic of China
| | - Zhiming Zhang
- Teaching Hospital of Fujian Medical University, Fuzhou, Fujian, 350004, People's Republic of China.,Department of Breast Surgery, School of Medicine, The First Affiliated Hospital of Xiamen University, Xiamen University, Xiamen, 361003, People's Republic of China
| | - Yi Zhou
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, People's Republic of China.,Xiamen Key Laboratory of Otolaryngology Head and Neck Surgery, Xiamen, 361003, China.,Teaching Hospital of Fujian Medical University, Fuzhou, Fujian, 350004, People's Republic of China
| | - Shuai Chen
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, People's Republic of China. .,Xiamen Key Laboratory of Otolaryngology Head and Neck Surgery, Xiamen, 361003, China.
| | - Yang Wang
- Xi'An Key Laboratory of Pathogenic Microorganism and Tumor Immunity, Xi'An Medical University, Xi'An 710021, China.
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Hao K, Wang J, Li Z, Chen H, Jia B, Hu G. PPARγ/mTOR Regulates the Synthesis and Release of Prostaglandins in Ovine Trophoblast Cells in Early Pregnancy. Vet Sci 2022; 9:649. [PMID: 36423098 PMCID: PMC9694237 DOI: 10.3390/vetsci9110649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/04/2022] [Accepted: 11/17/2022] [Indexed: 09/16/2023] Open
Abstract
Trophoblast cells synthesize and secrete prostaglandins (PGs), which are essential for ruminants in early gestation to recognize pregnancy. Hormones in the intrauterine environment play an important role in regulating PGs synthesis during implantation, but the underlying mechanism remains unclear. In this study, co-treatment of sheep trophoblast cells (STCs) with progesterone (P4), estradiol (E2), and interferon-tau (IFN-τ) increased the ratio of prostaglandin E2 (PGE2) to prostaglandin F2α (PGF2α) and upregulated peroxisome proliferator-activated receptor γ (PPARγ) expression, while inhibiting the mechanistic target of rapamycin (mTOR) pathway and activating cellular autophagy. Under hormone treatment, inhibition of PPARγ activity decreased the ratio of PGE2/PGF2α and cellular activity, while activating expression of the mTOR downstream marker-the phosphorylation of p70S6K (p-p70S6K). We also found that the PPARγ/mTOR pathway played an important role in regulating trophoblast cell function. Inhibition of the mTOR pathway by rapamycin increased the ratio of PGE2/PGF2α and decreased the expression of apoptosis-related proteins after inhibiting PPARγ activity. In conclusion, our findings provide new insights into the molecular mechanism of prostaglandin regulation of trophoblast cells in sheep during early pregnancy, indicating that the PPARγ/mTOR pathway plays an important role in PGs secretion and cell viability.
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Affiliation(s)
| | | | | | | | - Bin Jia
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
| | - Guangdong Hu
- College of Animal Science and Technology, Shihezi University, Shihezi 832000, China
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8
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Hussein AM, Balachandar N, Mathieu J, Ruohola-Baker H. Molecular Regulators of Embryonic Diapause and Cancer Diapause-like State. Cells 2022; 11:cells11192929. [PMID: 36230891 PMCID: PMC9562880 DOI: 10.3390/cells11192929] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Embryonic diapause is an enigmatic state of dormancy that interrupts the normally tight connection between developmental stages and time. This reproductive strategy and state of suspended development occurs in mice, bears, roe deer, and over 130 other mammals and favors the survival of newborns. Diapause arrests the embryo at the blastocyst stage, delaying the post-implantation development of the embryo. This months-long quiescence is reversible, in contrast to senescence that occurs in aging stem cells. Recent studies have revealed critical regulators of diapause. These findings are important since defects in the diapause state can cause a lack of regeneration and control of normal growth. Controlling this state may also have therapeutic applications since recent findings suggest that radiation and chemotherapy may lead some cancer cells to a protective diapause-like, reversible state. Interestingly, recent studies have shown the metabolic regulation of epigenetic modifications and the role of microRNAs in embryonic diapause. In this review, we discuss the molecular mechanism of diapause induction.
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Affiliation(s)
- Abdiasis M. Hussein
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA
| | - Nanditaa Balachandar
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai 603203, India
| | - Julie Mathieu
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA
- Department of Comparative Medicine, University of Washington, Seattle, WA 98109, USA
| | - Hannele Ruohola-Baker
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA
- Correspondence:
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Oviductal Extracellular Vesicles Enhance Porcine In Vitro Embryo Development by Modulating the Embryonic Transcriptome. Biomolecules 2022; 12:biom12091300. [PMID: 36139139 PMCID: PMC9496104 DOI: 10.3390/biom12091300] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/29/2022] [Accepted: 09/07/2022] [Indexed: 11/16/2022] Open
Abstract
Oviductal extracellular vesicles (oEVs) have been identified as important components of the oviductal fluid (OF) and have been pointed to as key modulators of gamete/embryo-maternal interactions. Here, we determined the functional impact of oEVs on embryo development and the embryonic transcriptome in porcine. Experiment 1 examined the effect of oEVs and OF on embryo development. In vitro-produced embryos were cultured with oEVs or OF for 2 or 7 days using an in vitro sequential system or without supplementation (control). Experiment 2 analyzed transcriptomic alterations of EV-treated embryos versus control and the oEVs RNA cargo by RNA-sequencing. Two days of EV treatment enhanced embryo development over time when compared to other treatments. Different RNA expression profiles between embryos treated with EVs for two or seven days and untreated controls were obtained, with 54 and 59 differentially expressed (DE) genes and six and seven DE miRNAs, respectively. In oEV RNA cargo, 12,998 RNAs and 163 miRNAs were identified. Integrative analyses pointed to specific oEV components that might act as modulators of the embryonic transcriptome, such as S100A11, ANXA2 or miR-21-5p. Overall, the findings suggested that oEVs could be a potential strategy to improve porcine IVP outcomes, particularly by using two days of EV treatment.
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10
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Bockmann EC, Brito R, Madeira LF, da Silva Sampaio L, de Melo Reis RA, França GR, Calaza KDC. The Role of Cannabinoids in CNS Development: Focus on Proliferation and Cell Death. Cell Mol Neurobiol 2022; 43:1469-1485. [PMID: 35925507 DOI: 10.1007/s10571-022-01263-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 07/15/2022] [Indexed: 11/26/2022]
Abstract
The active principles of Cannabis sativa are potential treatments for several diseases, such as pain, seizures and anorexia. With the increase in the use of cannabis for medicinal purposes, a more careful assessment of the possible impacts on embryonic development becomes necessary. Surveys indicate that approximately 3.9% of pregnant women use cannabis in a recreational and/or medicinal manner. However, although the literature has already described the presence of endocannabinoid system components since the early stages of CNS development, many of their physiological effects during this stage have not yet been established. Moreover, it is still uncertain how the endocannabinoid system can be altered in terms of cell proliferation and cell fate, neural migration, neural differentiation, synaptogenesis and particularly cell death. In relation to cell death in the CNS, knowledge about the effects of cannabinoids is scarce. Thus, the present work aims to review the role of the endocannabinoid system in different aspects of CNS development and discuss possible side effects or even opportunities for treating some conditions in the development of this tissue.
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Affiliation(s)
- Eduardo Cosendey Bockmann
- Instituto de Biologia, Departamento de Neurobiologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Rafael Brito
- Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Lucianne Fragel Madeira
- Instituto de Biologia, Departamento de Neurobiologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Luzia da Silva Sampaio
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo Augusto de Melo Reis
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Guilherme Rapozeiro França
- Departamento de Ciências Fisiológicas, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Karin da Costa Calaza
- Instituto de Biologia, Departamento de Neurobiologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
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11
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Deng W, Wang H. Efficient cell chatting between embryo and uterus ensures embryo implantation. Biol Reprod 2022; 107:339-348. [PMID: 35774025 PMCID: PMC9310511 DOI: 10.1093/biolre/ioac135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 03/29/2022] [Accepted: 04/11/2022] [Indexed: 11/12/2022] Open
Abstract
Embryo implantation is one of the hottest topics during female reproduction since it is the first dialogue between maternal uterus and developing embryo whose disruption will contribute to adverse pregnancy outcome. Numerous achievements have been made to decipher the underlying mechanism of embryo implantation by genetic and molecular approaches accompanied with emerging technological advances. In recent decades, raising concepts incite insightful understanding on the mechanism of reciprocal communication between implantation competent embryos and receptive uterus. Enlightened by these gratifying evolvements, we aim to summarize and revisit current progress on the critical determinants of mutual communication between maternal uterus and embryonic signaling on the perspective of embryo implantation to alleviate infertility, enhance fetal health, and improve contraceptive design.
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Affiliation(s)
- Wenbo Deng
- Fujian Provincial Key Laboratory of Reproductive Health Research, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Haibin Wang
- Fujian Provincial Key Laboratory of Reproductive Health Research, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
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12
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Derežanin L, Blažytė A, Dobrynin P, Duchêne DA, Grau JH, Jeon S, Kliver S, Koepfli KP, Meneghini D, Preick M, Tomarovsky A, Totikov A, Fickel J, Förster DW. Multiple types of genomic variation contribute to adaptive traits in the mustelid subfamily Guloninae. Mol Ecol 2022; 31:2898-2919. [PMID: 35334142 DOI: 10.1111/mec.16443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 03/06/2022] [Accepted: 03/14/2022] [Indexed: 11/28/2022]
Abstract
Species of the mustelid subfamily Guloninae inhabit diverse habitats on multiple continents, and occupy a variety of ecological niches. They differ in feeding ecologies, reproductive strategies and morphological adaptations. To identify candidate loci associated with adaptations to their respective environments, we generated a de novo assembly of the tayra (Eira barbara), the earliest diverging species in the subfamily, and compared this with the genomes available for the wolverine (Gulo gulo) and the sable (Martes zibellina). Our comparative genomic analyses included searching for signs of positive selection, examining changes in gene family sizes, as well as searching for species-specific structural variants (SVs). Among candidate loci associated with phenotypic traits, we observed many related to diet, body condition and reproduction. For example, for the tayra, which has an atypical gulonine reproductive strategy of aseasonal breeding, we observe species-specific changes in many pregnancy-related genes. For the wolverine, a circumpolar hypercarnivore that must cope with seasonal food scarcity, we observed many changes in genes associated with diet and body condition. All types of genomic variation examined (single nucleotide polymorphisms, gene family expansions, structural variants) contributed substantially to the identification of candidate loci. This strongly argues for consideration of variation other than single nucleotide polymorphisms in comparative genomics studies aiming to identify loci of adaptive significance.
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Affiliation(s)
- Lorena Derežanin
- Leibniz Institute for Zoo and Wildlife Research (IZW, Alfred Kowalke Straße 17, 10315, Berlin, Germany
| | - Asta Blažytė
- Department of Biomedical Engineering, College of Information and Biotechnology, Ulsan National Institute of Science and Technology (UNIST, Ulsan, 44919, Republic of Korea
| | - Pavel Dobrynin
- Computer Technologies Laboratory, ITMO University, 49 Kronverkskiy Pr, 197101, Saint Petersburg, Russia
| | - David A Duchêne
- Center for Evolutionary Hologenomics, The GLOBE Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen, Denmark
| | - José Horacio Grau
- amedes Genetics, amedes Medizinische Dienstleistungen GmbH, Jägerstr. 61, 10117, Berlin, Germany
| | - Sungwon Jeon
- Department of Biomedical Engineering, College of Information and Biotechnology, Ulsan National Institute of Science and Technology (UNIST, Ulsan, 44919, Republic of Korea.,Clinomics Inc, Ulsan, 44919, Republic of Korea
| | - Sergei Kliver
- Institute of Molecular and Cellular Biology, SB RAS, 8/2 Acad. Lavrentiev Ave, Novosibirsk, 630090, Russia
| | - Klaus-Peter Koepfli
- Computer Technologies Laboratory, ITMO University, 49 Kronverkskiy Pr, 197101, Saint Petersburg, Russia.,Smithsonian-Mason School of Conservation, 1500 Remount Road, Front Royal, VA, 22630, USA.,Smithsonian Conservation Biology Institute, Center for Species Survival, National Zoological Park, 1500 Remount Road, Front Royal, VA, 22630, USA
| | - Dorina Meneghini
- Leibniz Institute for Zoo and Wildlife Research (IZW, Alfred Kowalke Straße 17, 10315, Berlin, Germany
| | - Michaela Preick
- Institute for Biochemistry and Biology, Faculty of Mathematics and Natural Sciences, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476, OT, Germany
| | - Andrey Tomarovsky
- Computer Technologies Laboratory, ITMO University, 49 Kronverkskiy Pr, 197101, Saint Petersburg, Russia.,Institute of Molecular and Cellular Biology, SB RAS, 8/2 Acad. Lavrentiev Ave, Novosibirsk, 630090, Russia.,Novosibirsk State University, 1 Pirogova str, Novosibirsk, 630090, Russia
| | - Azamat Totikov
- Computer Technologies Laboratory, ITMO University, 49 Kronverkskiy Pr, 197101, Saint Petersburg, Russia.,Institute of Molecular and Cellular Biology, SB RAS, 8/2 Acad. Lavrentiev Ave, Novosibirsk, 630090, Russia.,Novosibirsk State University, 1 Pirogova str, Novosibirsk, 630090, Russia
| | - Jörns Fickel
- Leibniz Institute for Zoo and Wildlife Research (IZW, Alfred Kowalke Straße 17, 10315, Berlin, Germany.,Institute for Biochemistry and Biology, Faculty of Mathematics and Natural Sciences, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476, OT, Germany
| | - Daniel W Förster
- Leibniz Institute for Zoo and Wildlife Research (IZW, Alfred Kowalke Straße 17, 10315, Berlin, Germany
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13
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Delayed Implantation Induced by Letrozole in Mice. Reprod Sci 2022; 29:2864-2875. [PMID: 35257352 DOI: 10.1007/s43032-022-00902-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 02/23/2022] [Indexed: 11/27/2022]
Abstract
Implantation timing is critical for a successful pregnancy. A short delay in embryo implantation caused by targeted gene ablation produced a cascading problem in the later stages of the pregnancy. Although several delayed implantation models have been established in wild mice, almost none of them is suitable for investigating the early delay's effects on the late events of pregnancy. Here, we report a new delayed implantation model established by the intraperitoneal administration of letrozole at 5 mg/kg body weight on day 3 of pregnancy. In these mice, initiation of implantation was induced at will by the injection of estradiol (E2). When the estradiol (3 ng) was injected on day 4 of pregnancy (i.e., without delay), the embryo implantation restarted, and the pregnancy continued normally. However, 25 ng estrogen caused compromised implantation. We also found that 67% of the female mice could be pregnant normally and finally gave birth when the estradiol injection (3 ng) was on day 5 of pregnancy (i.e., 1-day delay). Most failed pregnancies had impaired decidualization, decreased serum progesterone levels, and compromised angiogenesis. Progesterone supplementation could rescue decidualization failure in the mice. Collectively, we established a new model of delayed implantation by letrozole, which can be easily applied to study the effect and mechanisms of delay of embryo implantation on the progression of late pregnancy events.
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14
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Autophagy as a Therapeutic Target of Natural Products Enhancing Embryo Implantation. Pharmaceuticals (Basel) 2021; 15:ph15010053. [PMID: 35056110 PMCID: PMC8779555 DOI: 10.3390/ph15010053] [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: 11/01/2021] [Revised: 12/27/2021] [Accepted: 12/30/2021] [Indexed: 12/13/2022] Open
Abstract
Infertility is an emerging health issue worldwide, and female infertility is intimately associated with embryo implantation failure. Embryo implantation is an essential process during the initiation of prenatal development. Recent studies have strongly suggested that autophagy in the endometrium is the most important factor for successful embryo implantation. In addition, several studies have reported the effects of various natural products on infertility improvement via the regulation of embryo implantation, embryo quality, and endometrial receptivity. However, it is unclear whether natural products can improve embryo implantation ability by regulating endometrial autophagy. Therefore, we performed a literature review of studies on endometrial autophagy, embryo implantation, natural products, and female infertility. Based on the information from these studies, this review suggests a new treatment strategy for female infertility by proposing natural products that have been proven to be safe and effective as endometrial autophagy regulators; additionally, we provide a comprehensive understanding of the relationship between the regulation of endometrial autophagy by natural products and female infertility, with an emphasis on embryo implantation.
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15
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Alhasan BA, Gordeev SA, Knyazeva AR, Aleksandrova KV, Margulis BA, Guzhova IV, Suvorova II. The mTOR Pathway in Pluripotent Stem Cells: Lessons for Understanding Cancer Cell Dormancy. MEMBRANES 2021; 11:858. [PMID: 34832087 PMCID: PMC8620939 DOI: 10.3390/membranes11110858] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 11/16/2022]
Abstract
Currently, the success of targeted anticancer therapies largely depends on the correct understanding of the dormant state of cancer cells, since it is increasingly regarded to fuel tumor recurrence. The concept of cancer cell dormancy is often considered as an adaptive response of cancer cells to stress, and, therefore, is limited. It is possible that the cancer dormant state is not a privilege of cancer cells but the same reproductive survival strategy as diapause used by embryonic stem cells (ESCs). Recent advances reveal that high autophagy and mTOR pathway reduction are key mechanisms contributing to dormancy and diapause. ESCs, sharing their main features with cancer stem cells, have a delicate balance between the mTOR pathway and autophagy activity permissive for diapause induction. In this review, we discuss the functioning of the mTOR signaling and autophagy in ESCs in detail that allows us to deepen our understanding of the biology of cancer cell dormancy.
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Affiliation(s)
| | | | | | | | | | | | - Irina I. Suvorova
- Institute of Cytology, Russian Academy of Sciences, 194064 St. Petersburg, Russia; (B.A.A.); (S.A.G.); (A.R.K.); (K.V.A.); (B.A.M.); (I.V.G.)
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16
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van der Weijden VA, Bulut-Karslioglu A. Molecular Regulation of Paused Pluripotency in Early Mammalian Embryos and Stem Cells. Front Cell Dev Biol 2021; 9:708318. [PMID: 34386497 PMCID: PMC8353277 DOI: 10.3389/fcell.2021.708318] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/06/2021] [Indexed: 02/06/2023] Open
Abstract
The energetically costly mammalian investment in gestation and lactation requires plentiful nutritional sources and thus links the environmental conditions to reproductive success. Flexibility in adjusting developmental timing enhances chances of survival in adverse conditions. Over 130 mammalian species can reversibly pause early embryonic development by switching to a near dormant state that can be sustained for months, a phenomenon called embryonic diapause. Lineage-specific cells are retained during diapause, and they proliferate and differentiate upon activation. Studying diapause thus reveals principles of pluripotency and dormancy and is not only relevant for development, but also for regeneration and cancer. In this review, we focus on the molecular regulation of diapause in early mammalian embryos and relate it to maintenance of potency in stem cells in vitro. Diapause is established and maintained by active rewiring of the embryonic metabolome, epigenome, and gene expression in communication with maternal tissues. Herein, we particularly discuss factors required at distinct stages of diapause to induce, maintain, and terminate dormancy.
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17
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Cao Z, Zhang L, Hong R, Li Y, Wang Y, Qi X, Ning W, Gao D, Xu T, Ma Y, Yu T, Knott JG, Sathanawongs A, Zhang Y. METTL3-mediated m6A methylation negatively modulates autophagy to support porcine blastocyst development‡. Biol Reprod 2021; 104:1008-1021. [PMID: 33590832 DOI: 10.1093/biolre/ioab022] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/21/2020] [Accepted: 02/10/2021] [Indexed: 12/29/2022] Open
Abstract
N6-methyladenosine (m6A) catalyzed by METTL3 regulates the maternal-to-zygotic transition in zebrafish and mice. However, the role and mechanism of METTL3-mediated m6A methylation in blastocyst development remains unclear. Here, we show that METTL3-mediated m6A methylation sustains porcine blastocyst development via negatively modulating autophagy. We found that reduced m6A levels triggered by METTL3 knockdown caused embryonic arrest during morula-blastocyst transition and developmental defects in trophectoderm cells. Intriguingly, overexpression of METTL3 in early embryos resulted in increased m6A levels and these embryos phenocopied METTL3 knockdown embryos. Mechanistically, METTL3 knockdown or overexpression resulted in a significant increase or decrease in expression of ATG5 (a key regulator of autophagy) and LC3 (an autophagy marker) in blastocysts, respectively. m6A modification of ATG5 mRNA mainly occurs at 3'UTR, and METTL3 knockdown enhanced ATG5 mRNA stability, suggesting that METTL3 negatively regulated autophagy in an m6A dependent manner. Furthermore, single-cell qPCR revealed that METTL3 knockdown only increased expression of LC3 and ATG5 in trophectoderm cells, indicating preferential inhibitory effects of METTL3 on autophagy activity in the trophectoderm lineage. Importantly, autophagy restoration by 3MA (an autophagy inhibitor) treatment partially rescued developmental defects of METTL3 knockdown blastocysts. Taken together, these results demonstrate that METTL3-mediated m6A methylation negatively modulates autophagy to support blastocyst development.
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Affiliation(s)
- Zubing Cao
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Ling Zhang
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Renyun Hong
- Department of Reproductive Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Yunsheng Li
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yiqing Wang
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Xin Qi
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Wei Ning
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Di Gao
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Tengteng Xu
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yangyang Ma
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Tong Yu
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Jason G Knott
- Developmental Epigenetics Laboratory, Department of Animal Science, Michigan State University, East Lansing, MI, USA
| | - Anucha Sathanawongs
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Yunhai Zhang
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
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18
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Rehman SK, Haynes J, Collignon E, Brown KR, Wang Y, Nixon AML, Bruce JP, Wintersinger JA, Singh Mer A, Lo EBL, Leung C, Lima-Fernandes E, Pedley NM, Soares F, McGibbon S, He HH, Pollet A, Pugh TJ, Haibe-Kains B, Morris Q, Ramalho-Santos M, Goyal S, Moffat J, O'Brien CA. Colorectal Cancer Cells Enter a Diapause-like DTP State to Survive Chemotherapy. Cell 2021; 184:226-242.e21. [PMID: 33417860 PMCID: PMC8437243 DOI: 10.1016/j.cell.2020.11.018] [Citation(s) in RCA: 221] [Impact Index Per Article: 73.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 08/25/2020] [Accepted: 11/10/2020] [Indexed: 12/22/2022]
Abstract
Cancer cells enter a reversible drug-tolerant persister (DTP) state to evade death from chemotherapy and targeted agents. It is increasingly appreciated that DTPs are important drivers of therapy failure and tumor relapse. We combined cellular barcoding and mathematical modeling in patient-derived colorectal cancer models to identify and characterize DTPs in response to chemotherapy. Barcode analysis revealed no loss of clonal complexity of tumors that entered the DTP state and recurred following treatment cessation. Our data fit a mathematical model where all cancer cells, and not a small subpopulation, possess an equipotent capacity to become DTPs. Mechanistically, we determined that DTPs display remarkable transcriptional and functional similarities to diapause, a reversible state of suspended embryonic development triggered by unfavorable environmental conditions. Our study provides insight into how cancer cells use a developmentally conserved mechanism to drive the DTP state, pointing to novel therapeutic opportunities to target DTPs.
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Affiliation(s)
- Sumaiyah K Rehman
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Jennifer Haynes
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Evelyne Collignon
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON M5T 3L9, Canada
| | - Kevin R Brown
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Yadong Wang
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Allison M L Nixon
- Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Jeffrey P Bruce
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Jeffrey A Wintersinger
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada; Ontario Institute for Cancer Research, Toronto, ON M5G 0A3, Canada; Department of Computer Science, University of Toronto, Toronto, ON M5T 3A1, Canada; Vector Institute, Toronto, ON M5G 1M1, Canada
| | - Arvind Singh Mer
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Edwyn B L Lo
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Cherry Leung
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | | | - Nicholas M Pedley
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Fraser Soares
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada
| | - Sophie McGibbon
- Department of Physics, University of Toronto, Toronto, ON M5S 1A7, Canada
| | - Housheng Hansen He
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Aaron Pollet
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON M5T 3L9, Canada
| | - Trevor J Pugh
- Ontario Institute for Cancer Research, Toronto, ON M5G 0A3, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada; Clinical Genomics Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
| | - Benjamin Haibe-Kains
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada; Department of Computer Science, University of Toronto, Toronto, ON M5T 3A1, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Quaid Morris
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Ontario Institute for Cancer Research, Toronto, ON M5G 0A3, Canada; Department of Computer Science, University of Toronto, Toronto, ON M5T 3A1, Canada; Vector Institute, Toronto, ON M5G 1M1, Canada; Computational and Systems Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Miguel Ramalho-Santos
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON M5T 3L9, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada.
| | - Sidhartha Goyal
- Department of Physics, University of Toronto, Toronto, ON M5S 1A7, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3E1, Canada.
| | - Jason Moffat
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3E1, Canada.
| | - Catherine A O'Brien
- Princess Margaret Cancer Center, University Health Network, Toronto, ON M5G 1L7, Canada; Ontario Institute for Cancer Research, Toronto, ON M5G 0A3, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Surgery, University Health Network, Toronto, ON M5G 1L7, Canada.
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19
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van der Weijden VA, Rüegg AB, Bernal-Ulloa SM, Ulbrich SE. Embryonic diapause in mammals and dormancy in embryonic stem cells with the European roe deer as experimental model. Reprod Fertil Dev 2021; 33:76-81. [PMID: 38769673 DOI: 10.1071/rd20256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
In species displaying embryonic diapause, the developmental pace of the embryo is either temporarily and reversibly halted or largely reduced. Only limited knowledge on its regulation and the inhibition of cell proliferation extending pluripotency is available. In contrast with embryos from other diapausing species that reversibly halt during diapause, embryos of the roe deer Capreolus capreolus slowly proliferate over a period of 4-5 months to reach a diameter of approximately 4mm before elongation. The diapausing roe deer embryos present an interesting model species for research on preimplantation developmental progression. Based on our and other research, we summarise the available knowledge and indicate that the use of embryonic stem cells (ESCs) would help to increase our understanding of embryonic diapause. We report on known molecular mechanisms regulating embryonic diapause, as well as cellular dormancy of pluripotent cells. Further, we address the promising application of ESCs to study embryonic diapause, and highlight the current knowledge on the cellular microenvironment regulating embryonic diapause and cellular dormancy.
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Affiliation(s)
- Vera A van der Weijden
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland
| | - Anna B Rüegg
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland
| | - Sandra M Bernal-Ulloa
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland
| | - Susanne E Ulbrich
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Universitaetstrasse 2, 8092 Zurich, Switzerland; and Corresponding author
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20
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Is there a Role of Intravenous Immunoglobulin in Immunologic Recurrent Pregnancy Loss? J Immunol Res 2020; 2020:6672865. [PMID: 33426092 PMCID: PMC7781684 DOI: 10.1155/2020/6672865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/15/2020] [Accepted: 12/22/2020] [Indexed: 01/01/2023] Open
Abstract
Recurrent pregnancy loss (RPL) commonly refers to three or more miscarriages that occur before 20 weeks of pregnancy. The immunological cause of RPL could be either an auto- or alloimmune-related event or both. Because of the discovery of immunological abnormalities in RPL patients in clinical practice, several immunomodulatory therapies were introduced to maintain the immune balance at the maternal-fetal interface. Intravenous immunoglobulin (IVIg) is one of the immunomodulators. In recent years, several studies have analyzed the therapeutic effect of IVIg on RPL patients with antiphospholipid syndrome (APS) or unexplained RPL. However, their results are controversial. IVIg can be used in RPL patients with APS who have previously failed in other treatments. It is recommended that IVIg infusion could be considered used before conception in RPL patients who have cellular immune abnormalities such as increased natural killer (NK) cell counts, NK cell cytotoxicity, or increased T helper (Th)1/Th2 ratio, depending on the cut-off values of each hospital. The aim of this review was to summarize the mechanisms, efficacy, pharmacokinetics, and side effects associated with passive immunization using IVIg in immunologic RPL, according to the literature published in recent years. We hope that more obstetricians will be able to understand the timing and indication of IVIg properly in immunologic RPL patients and effectively enhance pregnancy outcomes for mothers and neonates.
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Park HK, Park SH, Lee M, Kim GR, Park M, Yang SC, Kim YS, Lim HJ, Kim HR, Song H. Secretory phospholipase A2-X (Pla2g10) is a novel progesterone receptor target gene exclusively induced in uterine luminal epithelium for uterine receptivity in mice. Cell Biosci 2020; 10:132. [PMID: 33292460 PMCID: PMC7678068 DOI: 10.1186/s13578-020-00495-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/09/2020] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Aberration of estrogen (E2) and/or progesterone (P4) signaling pathways affects expression of their target genes, which may lead to failure of embryo implantation and following pregnancy. Although many target genes of progesterone receptors (PRs) have been identified in uterine stroma, only a few PR targets have been reported in the epithelium. Secretory phospholipase A2-(PLA2)-X, a member of the PLA2 family that releases arachidonic acids for the synthesis of prostaglandins that are important for embryo implantation, is dysregulated in the endometrium of patients suffering from repeated implantation failure. However, it is not clear whether sPLA2-X is directly regulated by ovarian steroid hormones for embryo implantation in the uterus. RESULT P4 induced the Pla2g10 encoding of secretory PLA2-X in the apical region of uterine LE of ovariectomized mice via PR in both time- and dose-dependent manners, whereas E2 significantly inhibited it. This finding is consistent with the higher expression of Pla2g10 at the diestrus stage, when P4 is elevated during the estrous cycle, and at P4-treated delayed implantation. The level of Pla2g10 on day 4 of pregnancy (day 4) was dramatically decreased on day 5, when PRs are absent in the LE. Luciferase assays of mutagenesis in uterine epithelial cells demonstrated that four putative PR response elements in a Pla2g10 promoter region are transcriptionally active for Pla2g10. Intrauterine delivery of small interfering RNA for Pla2g10 on day 3 significantly reduced the number of implantation sites, reinforcing the critical function(s) of Pla2g10 for uterine receptivity in mice. CONCLUSIONS Pla2g10 is a novel PR target gene whose expression is exclusively localized in the apical region of the uterine LE for uterine receptivity for embryo implantation in mice.
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Affiliation(s)
- Hee Kyoung Park
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Collage of Medicine, Gil Medical Center, Gachon University, Incheon, 21565, Republic of Korea
| | - So Hee Park
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea
| | - Miji Lee
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea
| | - Gyeong Ryeong Kim
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea
| | - Mira Park
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea
| | - Seung Chel Yang
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea
| | - Yeon Sun Kim
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea
| | - Hyunjung J Lim
- Department of Veterinary Medicine, Konkuk University, Seoul, 05029, Republic of Korea
| | - Hye-Ryun Kim
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea.
| | - Haengseok Song
- Department of Biomedical Science, CHA University, Gyeonggi-do, Seongnam-si, 13488, Republic of Korea.
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22
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Toralova T, Kinterova V, Chmelikova E, Kanka J. The neglected part of early embryonic development: maternal protein degradation. Cell Mol Life Sci 2020; 77:3177-3194. [PMID: 32095869 PMCID: PMC11104927 DOI: 10.1007/s00018-020-03482-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 01/24/2020] [Accepted: 02/07/2020] [Indexed: 12/28/2022]
Abstract
The degradation of maternally provided molecules is a very important process during early embryogenesis. However, the vast majority of studies deals with mRNA degradation and protein degradation is only a very little explored process yet. The aim of this article was to summarize current knowledge about the protein degradation during embryogenesis of mammals. In addition to resuming of known data concerning mammalian embryogenesis, we tried to fill the gaps in knowledge by comparison with facts known about protein degradation in early embryos of non-mammalian species. Maternal protein degradation seems to be driven by very strict rules in terms of specificity and timing. The degradation of some maternal proteins is certainly necessary for the normal course of embryonic genome activation (EGA) and several concrete proteins that need to be degraded before major EGA have been already found. Nevertheless, the most important period seems to take place even before preimplantation development-during oocyte maturation. The defects arisen during this period seems to be later irreparable.
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Affiliation(s)
- Tereza Toralova
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic
| | - Veronika Kinterova
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic.
- Department of Veterinary Sciences, Czech University of Life Sciences in Prague, Prague, Czech Republic.
| | - Eva Chmelikova
- Department of Veterinary Sciences, Czech University of Life Sciences in Prague, Prague, Czech Republic
| | - Jiri Kanka
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic
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23
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Zhao X, Jiang Y, Jiang T, Han X, Wang Y, Chen L, Feng X. Physiological and pathological regulation of autophagy in pregnancy. Arch Gynecol Obstet 2020; 302:293-303. [PMID: 32556514 DOI: 10.1007/s00404-020-05607-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 05/18/2020] [Indexed: 12/19/2022]
Abstract
Autophagy exists widely in eukaryotic cells and is regulated by a variety of molecular mechanisms. Its physiological functions include providing energy, maintaining cell homeostasis, and promoting apoptosis of abnormal cells. At present, the regulation of autophagy in tumor, degenerative disease, and cardiovascular disease has attracted much attention. Gradually, the role of autophagy in pregnancy tends to be valued. The previous literature has shown that autophagy can influence the occurrence and maintenance of pregnancy from three aspects: embryo (affecting the process of fertilization and embryonic development and the function of trophoblast cells), maternal (decidualization), and maternal-to-fetal immune crosstalk. Undoubtedly, abnormalities in autophagy levels are associated with a variety of pregnancy complications, such as preeclampsia, fetal growth restriction, and preterm delivery which have been proven by human, animal, and in vitro experiments. The regulation of autophagy is expected to be a target for the treatment of these pregnancy complications. This article reviews the research on autophagy, especially about its physiological and pathological regulation during pregnancy.
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Affiliation(s)
- Xiaoxuan Zhao
- Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - Yuepeng Jiang
- Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Tianyue Jiang
- Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - Xinyu Han
- Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - Ying Wang
- Department of First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - Lu Chen
- Department of First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, 150040, China
| | - Xiaoling Feng
- Department of First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, 150040, China.
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24
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Somasundaram L, Levy S, Hussein AM, Ehnes DD, Mathieu J, Ruohola-Baker H. Epigenetic metabolites license stem cell states. Curr Top Dev Biol 2020; 138:209-240. [PMID: 32220298 DOI: 10.1016/bs.ctdb.2020.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
It has become clear during recent years that stem cells undergo metabolic remodeling during their activation process. While these metabolic switches take place in pluripotency as well as adult stem cell populations, the rules that govern the switch are not clear. In this review, we summarize some of the transitions in adult and pluripotent cell types and will propose that the key function in this process is the generation of epigenetic metabolites that govern critical epigenetic modifications, and therefore stem cell states.
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Affiliation(s)
- Logeshwaran Somasundaram
- Department of Biochemistry, University of Washington, Seattle, WA, United States; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, United States
| | - Shiri Levy
- Department of Biochemistry, University of Washington, Seattle, WA, United States; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, United States
| | - Abdiasis M Hussein
- Department of Biochemistry, University of Washington, Seattle, WA, United States; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, United States
| | - Devon D Ehnes
- Department of Biochemistry, University of Washington, Seattle, WA, United States; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, United States
| | - Julie Mathieu
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, United States; Department of Comparative Medicine, University of Washington, Seattle, WA, United States
| | - Hannele Ruohola-Baker
- Department of Biochemistry, University of Washington, Seattle, WA, United States; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, United States.
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25
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Su Y, Zhang JJ, He JL, Liu XQ, Chen XM, Ding YB, Tong C, Peng C, Geng YQ, Wang YX, Gao RF. Endometrial autophagy is essential for embryo implantation during early pregnancy. J Mol Med (Berl) 2020; 98:555-567. [PMID: 32072231 DOI: 10.1007/s00109-019-01849-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 10/16/2019] [Accepted: 10/25/2019] [Indexed: 12/11/2022]
Abstract
Embryo implantation is an essential and complex process in mammalian reproduction. However, little evidence has indicated the involvement of autophagy during embryo implantation. To determine the possible role of autophagy in uterine of pregnant mice during the peri-implantation stage, we first examined the expression of autophagy-related markers ATG5 and LC3 on day 4, 5, and 6 of pregnancy (D4, D5, and D6, respectively). Compared with expression on D4, downregulation of the autophagy-related markers was observed on D5 and D6, the days after the embryo attached to the receptivity endometrium. Further examination showed that autophagy-related markers ATG5, ATG12, LC3, cathepsin B, and P62 at the implantation site were significantly decreased when comparing with the inter-implantation site. Fewer number of autophagosomes at the implantation site were also observed by transmission electron microscopy. To confirm the functional role of autophagy during embryo implantation in mice, we administered the autophagy inhibitor 3-methyladenine and chloroquine to mice. After treated with 3-methyladenine, the expression of decidual markers HOXA10 and progesterone receptor were significantly reduced. Furthermore, a reduction in implantation sites and increase in the HOXA10 and PR protein levels were observed in response to chloroquine treatment. In addition, impaired uterine decidualization and dysregulation of the PR and HOXA10 protein levels was observed after autophagy inhibited by 3-methyladenine and chloroquine in in vivo artificial decidualization mouse model. In the last, LC3 and P62 were also observed in normal human proliferative, secretory, and decidua tissues. In conclusion, endometrial autophagy may be essential for embryo implantation, and it may be associated with endometrial decidualization during early pregnancy. KEY MESSAGE: • Autophagy-related markers were significantly decreased at implantation site. • Autophagy inhibition results in abnormal decidualization. • Autophagy is essential for embryo implantation.
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Affiliation(s)
- Yan Su
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
| | - Juan-Juan Zhang
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
- Reproductive Medicine Centre, Taihe Hospital, Hubei University of Medicine, 32 South Renmin Road, Shiyan, 442000, Hubei, China
| | - Jun-Lin He
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
| | - Xue-Qing Liu
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
| | - Xue-Mei Chen
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
| | - Yu-Bin Ding
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
| | - Chao Tong
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Chuan Peng
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
- The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yan-Qing Geng
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China
| | - Ying-Xiong Wang
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China.
| | - Ru-Fei Gao
- Laboratory of Reproductive Biology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
- Joint International Research Laboratory of Reproduction&Development, Chongqing, 400016, China.
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26
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Hussein AM, Wang Y, Mathieu J, Margaretha L, Song C, Jones DC, Cavanaugh C, Miklas JW, Mahen E, Showalter MR, Ruzzo WL, Fiehn O, Ware CB, Blau CA, Ruohola-Baker H. Metabolic Control over mTOR-Dependent Diapause-like State. Dev Cell 2020; 52:236-250.e7. [PMID: 31991105 DOI: 10.1016/j.devcel.2019.12.018] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 09/13/2019] [Accepted: 12/19/2019] [Indexed: 12/12/2022]
Abstract
Regulation of embryonic diapause, dormancy that interrupts the tight connection between developmental stage and time, is still poorly understood. Here, we characterize the transcriptional and metabolite profiles of mouse diapause embryos and identify unique gene expression and metabolic signatures with activated lipolysis, glycolysis, and metabolic pathways regulated by AMPK. Lipolysis is increased due to mTORC2 repression, increasing fatty acids to support cell survival. We further show that starvation in pre-implantation ICM-derived mouse ESCs induces a reversible dormant state, transcriptionally mimicking the in vivo diapause stage. During starvation, Lkb1, an upstream kinase of AMPK, represses mTOR, which induces a reversible glycolytic and epigenetically H4K16Ac-negative, diapause-like state. Diapause furthermore activates expression of glutamine transporters SLC38A1/2. We show by genetic and small molecule inhibitors that glutamine transporters are essential for the H4K16Ac-negative, diapause state. These data suggest that mTORC1/2 inhibition, regulated by amino acid levels, is causal for diapause metabolism and epigenetic state.
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Affiliation(s)
- Abdiasis M Hussein
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA
| | - Yuliang Wang
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Paul G. Allen School of Computer Science & Engineering, University of Washington, Seattle, WA 98195, USA
| | - Julie Mathieu
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Comparative Medicine, University of Washington, Seattle, WA 98195, USA
| | - Lilyana Margaretha
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Molecular and Cellular Biology, University of Washington, Seattle, WA 98109, USA
| | - Chaozhong Song
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Medicine, Division of Hematology, University of Washington, Seattle, WA 98195, USA
| | - Daniel C Jones
- Paul G. Allen School of Computer Science & Engineering, University of Washington, Seattle, WA 98195, USA
| | - Christopher Cavanaugh
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Comparative Medicine, University of Washington, Seattle, WA 98195, USA
| | - Jason W Miklas
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Elisabeth Mahen
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Medicine, Division of Hematology, University of Washington, Seattle, WA 98195, USA
| | - Megan R Showalter
- West Coast Metabolomics Center, University of California, Davis, Davis, CA 95616, USA
| | - Walter L Ruzzo
- Paul G. Allen School of Computer Science & Engineering, University of Washington, Seattle, WA 98195, USA; Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA; Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Oliver Fiehn
- West Coast Metabolomics Center, University of California, Davis, Davis, CA 95616, USA
| | - Carol B Ware
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Comparative Medicine, University of Washington, Seattle, WA 98195, USA
| | - C Anthony Blau
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Medicine, Division of Hematology, University of Washington, Seattle, WA 98195, USA
| | - Hannele Ruohola-Baker
- Department of Biochemistry, University of Washington, Seattle, WA 98195, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA; Department of Bioengineering, University of Washington, Seattle, WA 98195, USA; Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA.
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27
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Abstract
Embryonic diapause is the reversible arrest in development of mammalian embryos at the blastocyst stage. In this issue of Developmental Cell, Hussein et al. (2020) reveal that alternative splicing of Lkb1 is essential for diapause to persist and find the elevation of glycolytic and lipolytic pathways that were previously considered dormant.
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Affiliation(s)
- Bruce D Murphy
- Centre de Recherche en Reproduction et Fertilité, Université de Montréal, St-Hyacinthe, QC J2S2M2 Canada.
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28
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Yang D, Jiang T, Liu J, Zhang B, Lin P, Chen H, Zhou D, Tang K, Wang A, Jin Y. CREB3 regulatory factor -mTOR-autophagy regulates goat endometrial function during early pregnancy. Biol Reprod 2019; 98:713-721. [PMID: 29447354 DOI: 10.1093/biolre/ioy044] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 02/12/2018] [Indexed: 02/06/2023] Open
Abstract
In domestic ruminants, a receptive endometrium is crucial for successful pregnancy. Although many essential molecular modulators and pathways have been identified during early pregnancy, the precise mechanisms regulating goat endometrial function remains largely unknown. Here, we describe a novel regulator during early pregnancy, whereby hormones increased CREB3 regulatory factor (CREBRF) expression and act as a potential activator of autophagy in endometrial epithelial cells (EECs) via the mTOR pathway. Our results showed that knockdown of CREBRF via shCREBRF hampered EECs proliferation by S-phase cell cycle arrest and significantly inhibited endometrial function. We also reported that CREBRF-mTOR-autophagy pathway plays a vital role in regulating endometrial function, with a blockade of the mTOR by rapamycin demonstrating the regulatory function on prostaglandin (PGs) secretion and cell attachment in EECs. Moreover, chloroquine pretreatment also proved the above conclusion. Collectively, our findings provide new insight into the molecular mechanisms of goat endometrial function and indicate that the CREBRF-mTOR-autophagy pathway plays a central role in PGs secretion and cell attachment.
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Affiliation(s)
- Diqi Yang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Tingting Jiang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Jianguo Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Beibei Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Pengfei Lin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Huatao Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Dong Zhou
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Keqiong Tang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Aihua Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yaping Jin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
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29
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Blastocyst activation engenders transcriptome reprogram affecting X-chromosome reactivation and inflammatory trigger of implantation. Proc Natl Acad Sci U S A 2019; 116:16621-16630. [PMID: 31346081 DOI: 10.1073/pnas.1900401116] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Implantation of the blastocyst into the uterus is the gateway for further embryonic development in mammals. Programming of blastocyst to an implantation-competent state known as blastocyst activation is the determining factor for implantation into the receptive uterus. However, it remains largely unclear how the blastocyst is globally programmed for implantation. Employing a delayed implantation mouse model, we show here that the blastocyst undergoes extensive programming essential for implantation. By analyzing the transcriptional profile of blastocysts with different implantation competency, we reveal the dynamic change in the biosynthesis, metabolism, and proliferation during blastocyst reactivation from diapause. We also demonstrate that reactivation of the X chromosome, one of the most important events during periimplantation of female embryonic development, is not completed even in blastocysts under conditions of dormancy, despite long term suspension in the uterus. Moreover, the mural trophectoderm (TE), but not the polar TE, differentiates to be more invasive through the weakened cell-cell tight junctions and extracellular matrices (ECMs). By analyzing the differentially expressed profile of secretory proteins, we further demonstrate that the blastocyst functions as a proinflammatory body to secrete proinflammatory signals, such as TNFα and S100A9, thereby triggering embryo-uterine attachment reaction during implantation. Collectively, our data systematically and comprehensively disclose the programming of blastocyst reactivation from diapause for implantation and uncover previously undefined roles of blastocyst during implantation.
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30
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Gao H, Khawar MB, Li W. Essential role of autophagy in resource allocation during sexual reproduction. Autophagy 2019; 16:18-27. [PMID: 31203720 DOI: 10.1080/15548627.2019.1628543] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Sexual reproduction is the most common form of reproduction among eukaryotes, which is characterized by a series of massive cellular or tissue renovations. Recent studies have revealed novel functions of autophagy during sexual reproductive processes, ranging from yeast to mammals. In mammals, autophagy is indispensable for spermatogenesis and oogenesis, and it participates in early embryonic development and maternal-fetus crosstalk to ensure the development of embryos or fetuses. Thus, autophagy provides the molecular basis for resource allocation among parents and their offspring, providing an important way to benefit the next generation.Abbreviations: ATG: autophagy-related; Becn1: beclin 1, autophagy related; CMA: chaperone-mediated autophagy; epg: ectopic PGL granules; ES: ectoplasmic specialization; EVTs: extravillous trophoblasts; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; PCD: programmed cell death; PTB: preterm birth; STB: syncytiotrophoblast.
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Affiliation(s)
- Hui Gao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Muhammad Babar Khawar
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
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31
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Nakashima A, Tsuda S, Kusabiraki T, Aoki A, Ushijima A, Shima T, Cheng SB, Sharma S, Saito S. Current Understanding of Autophagy in Pregnancy. Int J Mol Sci 2019; 20:ijms20092342. [PMID: 31083536 PMCID: PMC6539256 DOI: 10.3390/ijms20092342] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 12/19/2022] Open
Abstract
Autophagy is an evolutionarily conserved process in eukaryotes to maintain cellular homeostasis under environmental stress. Intracellular control is exerted to produce energy or maintain intracellular protein quality controls. Autophagy plays an important role in embryogenesis, implantation, and maintenance of pregnancy. This role includes supporting extravillous trophoblasts (EVTs) that invade the decidua (endometrium) until the first third of uterine myometrium and migrate along the lumina of spiral arterioles under hypoxic and low-nutrient conditions in early pregnancy. In addition, autophagy inhibition has been linked to poor placentation—a feature of preeclamptic placentas—in a placenta-specific autophagy knockout mouse model. Studies of autophagy in human placentas have revealed controversial results, especially with regard to preeclampsia and gestational diabetes mellitus (GDM). Without precise estimation of autophagy flux, wrong interpretation would lead to fixed tissues. This paper presents a review of the role of autophagy in pregnancy and elaborates on the interpretation of autophagy in human placental tissues.
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Affiliation(s)
- Akitoshi Nakashima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama 930-0194, Japan.
| | - Sayaka Tsuda
- Department of Obstetrics and Gynecology, University of Toyama, Toyama 930-0194, Japan.
| | - Tae Kusabiraki
- Department of Obstetrics and Gynecology, University of Toyama, Toyama 930-0194, Japan.
| | - Aiko Aoki
- Department of Obstetrics and Gynecology, University of Toyama, Toyama 930-0194, Japan.
| | - Akemi Ushijima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama 930-0194, Japan.
| | - Tomoko Shima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama 930-0194, Japan.
| | - Shi-Bin Cheng
- Departments of Pediatrics, Women and Infants Hospital of Rhode Island, Warren Alpert Medical School of Brown University, Providence, RI 02905, USA.
| | - Surendra Sharma
- Departments of Pediatrics, Women and Infants Hospital of Rhode Island, Warren Alpert Medical School of Brown University, Providence, RI 02905, USA.
| | - Shigeru Saito
- Department of Obstetrics and Gynecology, University of Toyama, Toyama 930-0194, Japan.
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32
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Kamemizu C, Fujimori T. Distinct dormancy progression depending on embryonic regions during mouse embryonic diapause†. Biol Reprod 2019; 100:1204-1214. [DOI: 10.1093/biolre/ioz017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/14/2019] [Accepted: 01/31/2019] [Indexed: 12/20/2022] Open
Abstract
Abstract
Many mammalian species undergo embryonic diapause and suspend development at the blastocyst stage before implantation, which is also known as delayed implantation. We studied the process of how mouse embryos enter a dormancy status at a cellular level. Immunofluorescent analysis of differentiation markers for epiblast, primitive endoderm, and trophectoderm suggested that cell differentiation status was maintained during 7 days in diapause. To understand the progression of cellular dormancy during diapause, we examined the expression of a transgenic cell cycle marker Fucci2 and Ki67 by antibody staining, in addition to direct counting of nuclei in embryos. From these analyses, embryos during diapause were categorized into four stages by cell number and cell cycle. Cell cycle arrest occurred from the ab-embryonic region and from the trophectoderm to the ICM in the embryonic side. We also observed cell cycle transition by live imaging of Fucci2 embryos during the reactivation in culture from dormant status. Cell cycle was initially recovered from the embryonic side of embryos and eventually spread throughout the whole embryo. We also found that embryos in later stages of diapause required a longer period of time for reactivation. From these observations, it was shown that entrance into and exit from dormant status varied depending on cell types and location of cells in an embryo. These results suggest that embryonic diapause includes multiple steps and the mechanisms involved in cellular dormancy may be distinct between embryonic regions.
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Affiliation(s)
- Chizuru Kamemizu
- Division of Embryology, National Institute for Basic Biology, Okazaki, Aichi, Japan
- Department of Basic Biology, School of Life Science, SOKENDAI, Okazaki, Aichi, Japan
| | - Toshihiko Fujimori
- Division of Embryology, National Institute for Basic Biology, Okazaki, Aichi, Japan
- Department of Basic Biology, School of Life Science, SOKENDAI, Okazaki, Aichi, Japan
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33
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Gao H, Khawar MB, Li W. Autophagy in Reproduction. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1206:453-468. [PMID: 31776998 DOI: 10.1007/978-981-15-0602-4_21] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Autophagy, a major degradation/recycling pathway, plays an essential role in cellular homeostasis maintenance, cell fate decision, and reproductive development. During reproduction, sperms and eggs, the specialized haploid gametes produced by the meiotic process of the germ cells in male and female respectively, are fused to form a new zygote that develops into fetus through embryogenesis and maternal-fetal crosstalk. Researches carried out in the past few years have proved that autophagy plays a key role in the regulation of reproduction process, and blockage of autophagy process likely contributes to reproductive abnormalities and even infertility. Here we summerize the recent progress in exploring the functional roles of autophagy in reproductive processes, such as spermatogenesis, folliculogenesis, fertilization, embryogenesis, and maternal-fetal crosstalk, in both animals and plants.
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Affiliation(s)
- Hui Gao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, China
| | - Muhammad Babar Khawar
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
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Luo Z, Xu X, Sho T, Zhang J, Xu W, Yao J, Xu J. ROS-induced autophagy regulates porcine trophectoderm cell apoptosis, proliferation, and differentiation. Am J Physiol Cell Physiol 2018; 316:C198-C209. [PMID: 30485137 DOI: 10.1152/ajpcell.00256.2018] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Significant embryo loss remains a serious problem in pig production. Reactive oxygen species (ROS) play a critical role in embryonic implantation and placentation. However, the potential mechanism of ROS on porcine trophectoderm (pTr) cell fate during the peri-implantation period has not been investigated. This study aimed to elucidate the effects of ROS on pTr cell phenotypes and the regulatory role in cell attachment and differentiation. Herein, results showed that exogenous H2O2 inhibited pTr cell viability, arrested the cell cycle at S and G2/M phases, and increased cell apoptosis and autophagy protein light chain 3B and Beclin-1, whereas these effects were reversed by different concentrations of N-acetyl-l-cysteine (NAC) posttreatment. In addition, NAC abolished H2O2-induced autophagic flux, inhibited intracellular and mitochondrial ROS, and restored expression of genes important for mitochondrial DNA and biogenesis, cell attachment, and differentiation. NAC reversed H2O2-activated MAPK and Akt/mammalian target of rapamycin pathways in dose-dependent manners. Furthermore, analyses with pharmacological and RNA interference approaches suggested that autophagy regulated cell apoptosis and gene expression of caudal-related homeobox 2 and IL-1β. Collectively, these results provide new insights into the role of the ROS-induced autophagy in pTr cell apoptosis, attachment, and differentiation, indicating a promising target for decreasing porcine conceptus loss during the peri-implantation period.
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Affiliation(s)
- Zhen Luo
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai Key Laboratory of Veterinary Biotechnology , Shanghai , China
| | - Xue Xu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai Key Laboratory of Veterinary Biotechnology , Shanghai , China
| | - Takami Sho
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai Key Laboratory of Veterinary Biotechnology , Shanghai , China
| | - Jing Zhang
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai Key Laboratory of Veterinary Biotechnology , Shanghai , China
| | - Weina Xu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai Key Laboratory of Veterinary Biotechnology , Shanghai , China
| | - Jianbo Yao
- Division of Animal and Nutritional Sciences, West Virginia University , Morgantown, West Virginia
| | - Jianxiong Xu
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai Key Laboratory of Veterinary Biotechnology , Shanghai , China
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Wang L, Ye X, Zhao T. The physiological roles of autophagy in the mammalian life cycle. Biol Rev Camb Philos Soc 2018; 94:503-516. [PMID: 30239126 PMCID: PMC7379196 DOI: 10.1111/brv.12464] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 01/08/2023]
Abstract
Autophagy is primarily an efficient intracellular catabolic pathway used for degradation of abnormal cellular protein aggregates and damaged organelles. Although autophagy was initially proposed to be a cellular stress responder, increasing evidence suggests that it carries out normal physiological roles in multiple biological processes. To date, autophagy has been identified in most organs and at many different developmental stages, indicating that it is not only essential for cellular homeostasis and renovation, but is also important for organ development. Herein, we summarize our current understanding of the functions of autophagy (which here refers to macroautophagy) in the mammalian life cycle.
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Affiliation(s)
- Liang Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Xiongjun Ye
- Department of Urology, Peking University People's Hospital, 100034 Beijing, China
| | - Tongbiao Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, 100049 Beijing, China
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Yang D, Jiang T, Liu J, Hong J, Lin P, Chen H, Zhou D, Tang K, Wang A, Jin Y. Hormone regulates endometrial function via cooperation of endoplasmic reticulum stress and mTOR-autophagy. J Cell Physiol 2018; 233:6644-6659. [PMID: 29206294 DOI: 10.1002/jcp.26315] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 12/03/2017] [Indexed: 12/18/2022]
Abstract
In ruminant, the receptive endometrium and the elongation of the hatched blastocyst are required to complete the process of implantation. However, the mechanisms regulating goat endometrial function during the peri-implantation period of pregnancy are still unclear. In this study, EECs were treated with progesterone, estradiol, and interferon-tau (IFNT). We have found that endoplasmic reticulum (ER) stress was activated under hormones treatment. To identify the cellular mechanism of regulation of endometrial function, we investigated the effect of ER stress activator thapsigargin (TG) and inhibitor 4 phenyl butyric acid (4-PBA) on EECs. We found that TG, which activated the three branches of UPR, increased the expression of genes associated with promoting conceptus elongation and cellular attachment, significantly up-regulated the spheroid attachment rate and PGE2 /PGF2α ratio. 4-PBA pre-treatment inhibited UPR and inhibited promoting conceptus elongation and cellular attachment related genes, but the spheroid attachment rate and PGE2 /PGF2α ratio were not changed significantly. Moreover, knockdown of ATF6 via shATF6 promoted the conceptus elongation related genes, but increased the dissolution of the corpus luteum. Besides, blocking ATF6 attenuated autophagy by activating mammalian target of rapamycin (mTOR) pathway. Moreover, rapamycin (mTOR inhibitor) pre-treatment inhibited the expression of promoting conceptus elongation and increased PGE2 /PGF2α ratio. Taken together, our study indicated that physiological level of ER stress may contribute to early pregnancy success, and ATF6 signaling pathway cooperated with autophagy to regulate endometrial function by modulating mTOR pathway.
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Affiliation(s)
- Diqi Yang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Tingting Jiang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Jianguo Liu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Jin Hong
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Pengfei Lin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Huatao Chen
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Dong Zhou
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Keqiong Tang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Aihua Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yaping Jin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.,Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
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Abstract
Embryonic diapause – a period of embryonic suspension at the blastocyst stage – is a fascinating phenomenon that occurs in over 130 species of mammals, ranging from bears and badgers to mice and marsupials. It might even occur in humans. During diapause, there is minimal cell division and greatly reduced metabolism, and development is put on hold. Yet there are no ill effects for the pregnancy when it eventually continues. Multiple factors can induce diapause, including seasonal supplies of food, temperature, photoperiod and lactation. The successful reactivation and continuation of pregnancy then requires a viable embryo, a receptive uterus and effective molecular communication between the two. But how do the blastocysts survive and remain viable during this period of time, which can be up to a year in some cases? And what are the signals that bring it out of suspended animation? Here, we provide an overview of the process of diapause and address these questions, focussing on recent molecular data.
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Affiliation(s)
- Marilyn B. Renfree
- School of BioSciences, The University of Melbourne, Victoria, Australia 3010
| | - Jane C. Fenelon
- The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada K1H8L6
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Nakashima A, Aoki A, Kusabiraki T, Shima T, Yoshino O, Cheng SB, Sharma S, Saito S. Role of autophagy in oocytogenesis, embryogenesis, implantation, and pathophysiology of pre-eclampsia. J Obstet Gynaecol Res 2017; 43:633-643. [PMID: 28418212 DOI: 10.1111/jog.13292] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/12/2016] [Accepted: 12/25/2016] [Indexed: 12/23/2022]
Abstract
Autophagy is a well-conserved mechanism in cells from yeast to mammals, and autophagy maintains homeostasis against stress. The role of autophagy was originally shown to be a mechanism of energy production under starvation. In fact, multiple lines of evidence reveal that autophagy has numerous functions, such as protection from stress, energy regulation, immune regulation, differentiation, proliferation, and cell death. In the field of reproduction, the role of autophagy in implantation, embryogenesis, placentation, and delivery has become clearer. In addition, recent study has elucidated that the placenta has the ability to protect extraplacental cells from virus infection by activating autophagy. During resent research into autophagy, several issues have occurred in the interpretation of the autophagy status. In this review, we discuss the relation between autophagy and reproductive events, and show the importance of autophagy for placentation and pre-eclampsia.
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Affiliation(s)
- Akitoshi Nakashima
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Aiko Aoki
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Tae Kusabiraki
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Tomoko Shima
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Osamu Yoshino
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - Shi-Bin Cheng
- Department of Pediatrics, Women and Infants Hospital, Brown University, Providence, Rhode Island, USA
| | - Surendra Sharma
- Department of Pediatrics, Women and Infants Hospital, Brown University, Providence, Rhode Island, USA
| | - Shigeru Saito
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toyama, Toyama, Japan
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Abstract
Autophagy is an evolutionarily conserved catalytic process by which cytoplasmic components including damaged macromolecules and organelles are degraded. The role of autophagy includes adaptive responses to nutrition deprivation or intracellular stimuli. Although autophagosomes were first observed in early 1960s, it was 1990s that autophagy-related genes in yeast were identified and studied. Nowadays, the molecular machinery of autophagy and signaling pathway to various stimuli are almost outlined. Dysregulation of autophagic activity has been implicated in many human diseases including neurodegenerative diseases, infection and inflammation, and malignancies. However, since current understanding of autophagy in placenta is just at the beginning, this paper aims to provide general information on autophagy (part I) and to summarize articles on autophagy in human placenta (part II). This review article will serve as a basis for further researches on autophagy in relation to human pregnancy and its complications.
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40
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Cao B, Camden AJ, Parnell LA, Mysorekar IU. Autophagy regulation of physiological and pathological processes in the female reproductive tract. Am J Reprod Immunol 2017; 77. [PMID: 28194822 DOI: 10.1111/aji.12650] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 01/17/2017] [Indexed: 12/20/2022] Open
Abstract
Autophagy is a ubiquitous cell recycling pathway that delivers cytoplasmic constituents to the lysosome and is essential for normal cellular function. Autophagic activity is up-regulated under physiological conditions as well as stressful conditions such as nutrient deprivation, oxidative stress, hypoxia, inflammation, and infection. Thus, it is essential to regard the functional importance of the pathway and its components in a given tissue context. Here we review what is known about the involvement of autophagy process during physiological processes in the female reproductive tract and in pregnancy from preimplantation to oocyte function to placental development, parturition, and postpartum remodeling of the uterus; as well as in pathological and adverse events during these processes.
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Affiliation(s)
- Bin Cao
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA
| | - Alison J Camden
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA
| | - Lindsay A Parnell
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA
| | - Indira U Mysorekar
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA.,Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
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41
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Shin H, Bang S, Kim J, Jun JH, Song H, Lim HJ. The formation of multivesicular bodies in activated blastocysts is influenced by autophagy and FGF signaling in mice. Sci Rep 2017; 7:41986. [PMID: 28155881 PMCID: PMC5290465 DOI: 10.1038/srep41986] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 01/04/2017] [Indexed: 01/05/2023] Open
Abstract
Dormant blastocysts during delayed implantation undergo autophagic activation, which is an adaptive response to prolonged survival in utero during less favorable environment. We observed that multivesicular bodies (MVBs) accumulate in the trophectoderm of dormant blastocysts upon activation for implantation. Since autophagosomes are shown to fuse with MVBs and efficient autophagic degradation requires functional MVBs, we examined if MVB formation in activated blastocysts are associated with protracted autophagic state during dormancy. We show here that autophagic activation during dormancy is one precondition for MVB formation in activated blastocysts. Furthermore, the blockade of FGF signaling with PD173074 partially interferes with MVB formation in these blastocysts, suggesting the involvement of FGFR signaling in this process. We believe that MVB formation in activated blastocysts after dormancy is a potential mechanism of clearing subcellular debris accumulated during prolonged autophagy.
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Affiliation(s)
- Hyejin Shin
- Department of Biomedical Science &Technology, Institute of Biomedical Science &Technology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Soyoung Bang
- Department of Biomedical Science &Technology, Institute of Biomedical Science &Technology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Jiyeon Kim
- Department of Biomedical Science &Technology, Institute of Biomedical Science &Technology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Jin Hyun Jun
- Department of Biomedical Laboratory Science, Eulji University, 553 Sanseong-daero, Seongnam, Gyeonggi-do 13135, Korea
| | - Haengseok Song
- Department of Biomedical Science, CHA University, CHA Bio Complex, 689 Sampyeong-dong, Seongnam, Gyeonggi-do 13884, Korea
| | - Hyunjung Jade Lim
- Department of Biomedical Science &Technology, Institute of Biomedical Science &Technology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea.,Department of Veterinary Medicine, School of Veterinary Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
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The Role of Hsp70 in the Regulation of Autophagy in Gametogenesis, Pregnancy, and Parturition. ADVANCES IN ANATOMY, EMBRYOLOGY, AND CELL BIOLOGY 2017; 222:117-127. [PMID: 28389753 DOI: 10.1007/978-3-319-51409-3_6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Induction of the 70 kDa heat shock protein (hsp70) and autophagy are two major mechanisms that promote cell homeostasis during the rapid cell growth and differentiation characteristic of reproduction. Hsp70 insures proper assembly, conformation, and intracellular transport of nascent proteins. Autophagy removes from the cytoplasm proteins, other macromolecules, and organelles that are no longer functional or needed and recycles their components for synthesis of new products under nutritionally limiting conditions. Hsp70 inhibits autophagy and so a proper balance between these two processes is essential for optimal germ cell production and survival and pregnancy progression. A marked inhibition in autophagy and a concomitant increase in hsp70 at term is a trigger for parturition. Excessive external or endogenous stress that induces a high level of hsp70 production can lead to a non-physiological inhibition of autophagy, resulting in altered spermatogenesis, premature ovarian failure, and complications of pregnancy including preeclampsia, intrauterine growth restriction, and preterm birth.
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Bulut-Karslioglu A, Biechele S, Jin H, Macrae TA, Hejna M, Gertsenstein M, Song JS, Ramalho-Santos M. Inhibition of mTOR induces a paused pluripotent state. Nature 2016; 540:119-123. [PMID: 27880763 PMCID: PMC5143278 DOI: 10.1038/nature20578] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 11/01/2016] [Indexed: 01/12/2023]
Abstract
Cultured pluripotent stem cells are a cornerstone of regenerative medicine owing to their ability to give rise to all cell types of the body. Although pluripotent stem cells can be propagated indefinitely in vitro, pluripotency is paradoxically a transient state in vivo, lasting 2-3 days around the time of blastocyst implantation. The exception to this rule is embryonic diapause, a reversible state of suspended development triggered by unfavourable conditions. Diapause is a physiological reproductive strategy widely employed across the animal kingdom, including in mammals, but its regulation remains poorly understood. Here we report that the partial inhibition of mechanistic target of rapamycin (mTOR), a major nutrient sensor and promoter of growth, induces reversible pausing of mouse blastocyst development and allows their prolonged culture ex vivo. Paused blastocysts remain pluripotent and competent-able to give rise to embryonic stem (ES) cells and live, fertile mice. We show that both naturally diapaused blastocysts in vivo and paused blastocysts ex vivo display pronounced reductions in mTOR activity, translation, histone modifications associated with gene activity and transcription. Pausing can be induced directly in cultured ES cells and sustained for weeks without appreciable cell death or deviations from cell cycle distributions. We show that paused ES cells display a remarkable global suppression of transcription, maintain a gene expression signature of diapaused blastocysts and remain pluripotent. These results uncover a new pluripotent stem cell state corresponding to the epiblast of the diapaused blastocyst and indicate that mTOR regulates developmental timing at the peri-implantation stage. Our findings have implications in the fields of assisted reproduction, regenerative medicine, cancer, metabolic disorders and ageing.
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Affiliation(s)
- Aydan Bulut-Karslioglu
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Steffen Biechele
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Hu Jin
- Carl R. Woese Institute for Genomic Biology
- Departments of Bioengineering and Physics, University of Illinois, Urbana-Champaign, Urbana, IL 61801, USA
| | - Trisha A. Macrae
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Miroslav Hejna
- Carl R. Woese Institute for Genomic Biology
- Departments of Bioengineering and Physics, University of Illinois, Urbana-Champaign, Urbana, IL 61801, USA
| | | | - Jun S. Song
- Carl R. Woese Institute for Genomic Biology
- Departments of Bioengineering and Physics, University of Illinois, Urbana-Champaign, Urbana, IL 61801, USA
| | - Miguel Ramalho-Santos
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
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Rhee JS, Saben JL, Mayer AL, Schulte MB, Asghar Z, Stephens C, Chi MMY, Moley KH. Diet-induced obesity impairs endometrial stromal cell decidualization: a potential role for impaired autophagy. Hum Reprod 2016; 31:1315-26. [PMID: 27052498 PMCID: PMC4871191 DOI: 10.1093/humrep/dew048] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 02/19/2016] [Accepted: 02/25/2016] [Indexed: 01/17/2023] Open
Abstract
STUDY QUESTION What effect does diet-induced obesity have on endometrial stromal cell (ESC) decidualization? SUMMARY ANSWER Diet-induced obesity impairs ESC decidualization. WHAT IS KNOWN ALREADY Decidualization is important for successful implantation and subsequent health of the pregnancy. Compared with normal-weight women, obese women have lower pregnancy rates (both spontaneous and by assisted reproductive technology), higher rates of early pregnancy loss and poorer oocyte quality. STUDY DESIGN, SIZE, DURATION Beginning at 6 weeks of age, female C57Bl/6J mice were fed either a high-fat/high-sugar diet (HF/HS; 58% Fat Energy/Sucrose) or a diet of standard mouse chow (CON; 13% Fat) for 12 weeks. At this point, metabolic parameters were measured. Some of the mice (n = 9 HF/HS and 9 CON) were mated with reproductively competent males, and implantation sites were assessed. Other mice (n = 11 HF/HS and 10 CON) were mated with vasectomized males, and artificial decidualization was induced. For in vitro human studies of primary ESCs, endometrial tissue was obtained via biopsy from normo-ovulatory patients without history of infertility (obese = BMI > 30 kg/m(2), n = 11 and lean = BMI < 25 kg/m(2), n = 7) and from patients consented for hysterectomies for a benign indication (n = 4). In vitro studies were also performed with immortalized human ESCs. ESCs were decidualized in culture for nine 9 days in the presence or absence of palmitic acid (PA), and the degree of decidualization was assessed by measuring expression of decidualization markers. PARTICIPANTS/MATERIALS, SETTING, METHODS The sizes of implantation sites and fetuses were analyzed in mice mated with reproductively competent males. In mice mated with vasectomized males, decidualization was induced, and uterine tissues were analyzed via hematoxylin and eosin staining, quantitative RT-PCR (RT-qPCR), and western blots. Human ESCs were cultured in vitro and induced to decidualize by treatment with cAMP and medroxyprogesterone. The level of expression of decidualization markers was assessed by RT-qPCR (mRNA) and western blotting (protein). ATP content of ESCs was measured, and levels of autophagy were assessed by western blotting of the autophagy regulators acetyl coa carboxylase (ACC) and ULK1 (Ser 317). Autophagic flux was measured by western blot of the marker LC3b-II. MAIN RESULTS AND THE ROLE OF CHANCE Mice exposed to an HF/HS diet became obese and metabolically impaired. HF/HS-exposed mice mated to reproductively competent males had smaller implantation sites in early pregnancy (P <0.001) and larger fetuses at term (P <0.05) than CON-exposed mice. In the artificial decidualization experiments, mice exposed to the HF/HS diet developed 50% smaller deciduomas than mice exposed to CON diet (P< 0.001). Human ESCs cultured in the presence of PA had markedly decreased mRNA expression of the decidualization markers, decidual prolactin (PRL) (P< 0.0001) and insulin-like growth factor binding protein 1 (IGFBP1) (P< 0.0001). Expression of PRL and IGFBP1 by mRNA were also significantly lower in early follicular phase ESCs of obese women than in those of normal-weight women (P< 0.05). Protein expression of phosphorylated ACC and phosphorylated ULK1, both activated forms, were lower in deciduomas of HF/HS mice than in those of control mice (P < 0.01). In immortalized human ESCs, LC3b-II levels were higher in decidualized cells than in controls, indicating increased autophagy. PA treatment abrogated this increase. LIMITATIONS, REASONS FOR CAUTION Many aspects of obesity and metabolic impairment could contribute to the decidualization defects observed in the HF/HS-exposed mice. Although our findings suggest that both autophagy and decidualization are impaired by exposure to PA, the underlying mechanisms should be elucidated. Finally, our human patient sample size was small. WIDER IMPLICATIONS OF THE FINDINGS Although many factors contribute to poor reproductive outcome and early pregnancy loss in obese women, our study suggests the importance of decidualization defects. Such defects may contribute to compromised endometrial receptivity and poor implantation. If defects in autophagy contribute to impaired decidualization, therapeutics could be developed to improve this process and thus improve implantation and pregnancy outcomes in obese women. STUDY FUNDING/COMPETING INTERESTS Grants include NIH 5T32HD040135-12 (J.S.R.), R01 HD065435 (K.H.M.), NIH T32 HD049305 (J.L.S.) and ACOG Research Grant (M.B.S.). The authors report no conflicts of interest.
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Affiliation(s)
- Julie S Rhee
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Jessica L Saben
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Allyson L Mayer
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Maureen B Schulte
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Zeenat Asghar
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Claire Stephens
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Maggie M-Y Chi
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Kelle H Moley
- Division of Basic Science Research, Department of Obstetrics and Gynecology, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
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Lee HR, Gupta MK, Kim DH, Hwang JH, Kwon B, Lee HT. Poly(ADP-ribosyl)ation is involved in pro-survival autophagy in porcine blastocysts. Mol Reprod Dev 2015; 83:37-49. [PMID: 26440043 DOI: 10.1002/mrd.22588] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 10/02/2015] [Indexed: 12/31/2022]
Abstract
Poly(ADP-ribosyl)ation (PARylation) prevents apoptosis through its involvement in pro-survival autophagy in cultured cells; whether or not the same is true for pre-implantation embryos has not yet been documented. In this study, we investigated the participation of PARylation and autophagy in in vitro porcine pre-implantation embryo development. The transcript levels of autophagy-related genes and poly(ADP-ribose) polymerase 1 (PARP1), an enzyme required for PARylation, were transiently up-regulated by fertilization, decreased at the late 1-cell stage, and maintained until the blastocyst stage. LC3, a marker of autophagosomes, and poly(ADP-ribose) (PAR) polymer were present in all stages of pre-implantation development. Exposure of embryos to 3-methyladenine, an autophagy inhibitor, or 3-aminobenzamide, a PARP inhibitor, suppressed the development of blastocysts. Pharmacological inhibition of PARylation further suppressed pro-survival autophagy by decreasing the expression of autophagy-related genes (ATG5, BECLIN1, and LC3) and decreasing LC3 protein abundance while increasing the rate of apoptosis in blastocysts. Deficiency in autophagy also induced abnormal accumulation of SQSTM1/p62 aggregates in porcine blastocysts. Collectively, these data suggest that PARylation is involved in selective autophagic degradation of ubiquitinated proteins, functioning in a pro-survival role, in porcine in vitro-produced embryos. These pro-survival regulatory mechanisms may be important for the control of embryo quality.
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Affiliation(s)
- Hye Ran Lee
- Department of Animal Biotechnology, Bio-Organ Research Center/Animal Resources Research Center, Konkuk University, Seoul, South Korea
| | - Mukesh Kumar Gupta
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, India
| | - Duk Hyeon Kim
- Department of Animal Biotechnology, Bio-Organ Research Center/Animal Resources Research Center, Konkuk University, Seoul, South Korea
| | - Jeong Ho Hwang
- Department of Animal Biotechnology, Bio-Organ Research Center/Animal Resources Research Center, Konkuk University, Seoul, South Korea
| | - Bumsup Kwon
- Department of Animal Biotechnology, Bio-Organ Research Center/Animal Resources Research Center, Konkuk University, Seoul, South Korea
| | - Hoon Taek Lee
- Department of Animal Biotechnology, Bio-Organ Research Center/Animal Resources Research Center, Konkuk University, Seoul, South Korea
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Lee GK, Shin H, Lim HJ. Rapamycin Influences the Efficiency of In vitro Fertilization and Development in the Mouse: A Role for Autophagic Activation. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2015; 29:1102-10. [PMID: 26954158 PMCID: PMC4932563 DOI: 10.5713/ajas.15.0762] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 10/01/2015] [Accepted: 10/07/2015] [Indexed: 12/13/2022]
Abstract
The mammalian target of rapamycin (mTOR) regulates cellular processes such as cell growth, metabolism, transcription, translation, and autophagy. Rapamycin is a selective inhibitor of mTOR, and induces autophagy in various systems. Autophagy contributes to clearance and recycling of macromolecules and organelles in response to stress. We previously reported that vitrified-warmed mouse oocytes show acute increases in autophagy during warming, and suggested that it is a natural response to cold stress. In this follow-up study, we examined whether the modulation of autophagy influences survival, fertilization, and developmental rates of vitrified-warmed mouse oocytes. We used rapamycin to enhance autophagy in metaphase II (MII) oocytes before and after vitrification. The oocytes were then subjected to in vitro fertilization (IVF). The fertilization and developmental rates of vitrified-warmed oocytes after rapamycin treatment were significantly lower than those for control groups. Modulation of autophagy with rapamycin treatment shows that rapamycin-induced autophagy exerts a negative influence on fertilization and development of vitrified-warmed oocytes.
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Affiliation(s)
- Geun-Kyung Lee
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - Hyejin Shin
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - Hyunjung Jade Lim
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul 143-701, Korea.,Department of Veterinary Medicine, Konkuk University, Seoul 143-701, Korea
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Sisti G, Kanninen TT, Ramer I, Witkin SS. Interaction between the inducible 70-kDa heat shock protein and autophagy: effects on fertility and pregnancy. Cell Stress Chaperones 2015; 20:753-8. [PMID: 26081752 PMCID: PMC4529872 DOI: 10.1007/s12192-015-0609-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 06/02/2015] [Accepted: 06/04/2015] [Indexed: 01/03/2023] Open
Abstract
A consequence of hsp70 (HSPA1A) induction is the inhibition of autophagy. Evidence of autophagy involvement in all aspects of the reproductive process is reviewed, and possible consequences of hsp70 induction at each developmental stage are postulated. It is proposed that aberrant external or internal stimuli that result in high levels of hsp70 production interfere with normal autophagy-related functions and lead to a decrease in the number of functional ova and spermatozoa, impaired pre- and post-implantation embryo development, and increased susceptibility to premature labor and delivery. The purpose of this review is to increase understanding of hsp70-autophagy interactions during reproduction. Interventions to modulate this interaction will lead to development of novel protocols to improve fertility and pregnancy outcome.
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Affiliation(s)
- Giovanni Sisti
- Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065 USA
| | - Tomi T. Kanninen
- Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065 USA
| | - Ilana Ramer
- Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065 USA
| | - Steven S. Witkin
- Division of Immunology and Infectious Diseases, Department of Obstetrics and Gynecology, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065 USA
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Cha JM, Dey SK. Reflections on Rodent Implantation. REGULATION OF IMPLANTATION AND ESTABLISHMENT OF PREGNANCY IN MAMMALS 2015; 216:69-85. [DOI: 10.1007/978-3-319-15856-3_5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Shin H, Choi S, Lim HJ. Relationship between reactive oxygen species and autophagy in dormant mouse blastocysts during delayed implantation. Clin Exp Reprod Med 2014; 41:125-31. [PMID: 25309857 PMCID: PMC4192453 DOI: 10.5653/cerm.2014.41.3.125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/19/2014] [Accepted: 09/15/2014] [Indexed: 12/12/2022] Open
Abstract
Objective Under estrogen deficiency, blastocysts cannot initiate implantation and enter dormancy. Dormant blastocysts live longer in utero than normal blastocysts, and autophagy has been suggested as a mechanism underlying the sustained survival of dormant blastocysts during delayed implantation. Autophagy is a cellular degradation pathway and a central component of the integrated stress response. Reactive oxygen species (ROS) are produced within cells during normal metabolism, but their levels increase dramatically under stressful conditions. We investigated whether heightened autophagy in dormant blastocysts is associated with the increased oxidative stress under the unfavorable condition of delayed implantation. Methods To visualize ROS production, day 8 (short-term dormancy) and day 20 (long-term dormancy) dormant blastocysts were loaded with 1-µM 5-(and-6)-chloromethyl-2', 7'-dichlorodihydrofluorescein diacetate, acetyl ester (CM-H2DCFDA). To block autophagic activation, 3-methyladenine (3-MA) and wortmannin were used in vivo and in vitro, respectively. Results We observed that ROS production was not significantly affected by the status of dormancy; in other words, both dormant and activated blastocysts showed high levels of ROS. However, ROS production was higher in the dormant blastocysts of the long-term dormancy group than in those of the short-term group. The addition of wortmannin to dormant blastocysts in vitro and 3-MA injection in vivo significantly increased ROS production in the short-term dormant blastocysts. In the long-term dormant blastocysts, ROS levels were not significantly affected by the treatment of the autophagy inhibitor. Conclusion During delayed implantation, heightened autophagy in dormant blastocysts may be operative as a potential mechanism to reduce oxidative stress. Further, ROS may be one of the potential causes of compromised developmental competence of long-term dormant blastocysts after implantation.
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Affiliation(s)
- Hyejin Shin
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Soyoung Choi
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Hyunjung Jade Lim
- Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea. ; Department of Veterinary Medicine, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
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Pawar S, Hantak AM, Bagchi IC, Bagchi MK. Minireview: Steroid-regulated paracrine mechanisms controlling implantation. Mol Endocrinol 2014; 28:1408-22. [PMID: 25051170 DOI: 10.1210/me.2014-1074] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Implantation is an essential process during establishment of pregnancy in mammals. It is initiated with the attachment of the blastocyst to a receptive uterine epithelium followed by its invasion into the stromal tissue. These events are profoundly regulated by the steroid hormones 17β-estradiol and progesterone. During the past several years, mouse models harboring conditional gene knockout mutations have become powerful tools for determining the functional roles of cellular factors involved in various aspects of implantation biology. Studies using these genetic models as well as primary cultures of human endometrial cells have established that the estrogen receptor α, the progesterone receptor, and their downstream target genes critically regulate uterine growth and differentiation, which in turn control embryo-endometrial interactions during early pregnancy. These studies have uncovered a diverse array of molecular cues, which are produced under the influence of estrogen receptor α and progesterone receptor and exchanged between the epithelial and stromal compartments of the uterus during the progressive phases of implantation. These paracrine signals are critical for acquisition of uterine receptivity and functional interactions with the embryo. This review highlights recent work describing paracrine mechanisms that govern steroid-regulated uterine epithelial-stromal dialogue during implantation and their roles in fertility and disease.
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Affiliation(s)
- Sandeep Pawar
- Departments of Molecular and Integrative Physiology (S.P., A.M.H., M.K.B.) and Comparative Biosciences (I.C.B.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
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