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Sakaguchi K. In Vitro Growth of Mammalian Follicles and Oocytes. Animals (Basel) 2024; 14:1355. [PMID: 38731360 PMCID: PMC11083657 DOI: 10.3390/ani14091355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 04/10/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
Mammalian ovaries contain a large number of immature follicles, most of which are destined to degenerate before ovulation [...].
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Affiliation(s)
- Kenichiro Sakaguchi
- Laboratory of Veterinary Theriogenology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Yanagito 1-1, Gifu 501-1193, Japan;
- Division of Animal Medical Science, Center for One Medicine Innovative Translational Research, Institute for Advanced Study, Gifu University, Yanagito 1-1, Gifu 501-1193, Japan
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Deng Q, Liu L, Tang R, Xian D, Zhong J. A newly improved method of primary cell culture: Tissue block with continuous adhesion subculture in skin fibroblast. Acta Histochem 2023; 125:152090. [PMID: 37639809 DOI: 10.1016/j.acthis.2023.152090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 08/16/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND Fibroblasts (FBs) have been widely used as a typical in vitro cell model for investigating the biological processes and cell pathophysiological mechanisms. However, FBs are prone to senescence in cell culture process after several passages. Thus, a new approach to cell culture is quite required to enhance the viability of cells. OBJECTIVE To explore a novel method of cell culture based on skin FBs. METHODS Dermal tissue blocks were obtained from BALB/c neonatal mice and randomly divided into experimental group and control group. The experimental group received the newly improved culture method, namely, continuous adherence subculture of tissue block (CASTB) method; while the traditional subculture method was applied in the control group. Cells at 1st, 5th and 10th passages were collected and identified by using histological/immunohistochemical and western blot analysis. Cellular viability, proliferation, senescence and apoptosis were analyzed through application of cell growth curve, CCK-8 assay, Ki67 assay, PCNA protein analysis, β-galactosidase staining, flow cytometry and western blot analysis. RESULTS Cells under two culture patterns exhibited spindle/irregular shape and vimentin positive expression. With the increase of passage times, the cellular growth rate in the control group gradually decreased, but no alterations emerged from the experimental group. CASTB method remarkably promoted cell growth and proliferation. Moreover, a greatly lower apoptosis and senescence tendency appeared in the experimental group than the control group with passages increasing. CONCLUSION The method of CASTB is superior to traditional subculture, offering a large number of primary FBs with higher efficiency and success rate and being worth of further popularization and application.
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Affiliation(s)
- Qiyan Deng
- Department of Dermatology, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Lumei Liu
- Department of Dermatology, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Ran Tang
- Department of Dermatology, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Dehai Xian
- Department of Anatomy, Southwest Medical University, Luzhou 646000, China.
| | - Jianqiao Zhong
- Department of Dermatology, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.
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Zhang J, Goods BA, Pattarawat P, Wang Y, Haining T, Zhang Q, Shalek AK, Duncan FE, Woodruff TK, Xiao S. An ex vivo ovulation system enables the discovery of novel ovulatory pathways and nonhormonal contraceptive candidates†. Biol Reprod 2023; 108:629-644. [PMID: 36708230 PMCID: PMC10106841 DOI: 10.1093/biolre/ioad009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 12/15/2022] [Accepted: 01/18/2023] [Indexed: 01/29/2023] Open
Abstract
Ovulation is an integral part of women's menstrual cycle and fertility. Understanding the mechanisms of ovulation has broad implications for the treatment of anovulatory diseases and the development of novel contraceptives. Now, few studies have developed effective models that both faithfully recapitulate the hallmarks of ovulation and possess scalability. We established a three-dimensional encapsulated in vitro follicle growth (eIVFG) system that recapitulates folliculogenesis and produces follicles that undergo ovulation in a controlled manner. Here, we determined whether ex vivo ovulation preserves molecular signatures of ovulation and demonstrated its use in discovering novel ovulatory pathways and nonhormonal contraceptive candidates through a high-throughput ovulation screening. Mature murine follicles from eIVFG were induced to ovulate ex vivo using human chorionic gonadotropin and collected at 0, 1, 4, and 8 hours post-induction. Phenotypic analyses confirmed key ovulatory events, including cumulus expansion, oocyte maturation, follicle rupture, and luteinization. Single-follicle RNA-sequencing analysis revealed the preservation of ovulatory genes and dynamic transcriptomic profiles and signaling. Soft clustering identified distinct gene expression patterns and new pathways that may critically regulate ovulation. We further used this ex vivo ovulation system to screen 21 compounds targeting established and newly identified ovulatory pathways. We discovered that proprotein convertases activate gelatinases to sustain follicle rupture and do not regulate luteinization and progesterone secretion. Together, our ex vivo ovulation system preserves molecular signatures of ovulation, presenting a new powerful tool for studying ovulation and anovulatory diseases as well as for establishing a high-throughput ovulation screening to identify novel nonhormonal contraceptives for women.
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Affiliation(s)
- Jiyang Zhang
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Brittany A Goods
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | - Pawat Pattarawat
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
| | - Yingzheng Wang
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
| | - Tessa Haining
- The Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Qiang Zhang
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Alex K Shalek
- The Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- The Institute for Medical Science and Engineering, Department of Chemistry, Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Francesca E Duncan
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Teresa K Woodruff
- Department of Obstetrics and Gynecology, Michigan State University, East Lansing, MI, USA
| | - Shuo Xiao
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers University, Piscataway, NJ, USA
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