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Kim J, Zhao H, Dan J, Kim S, Hardikar S, Hollowell D, Lin K, Lu Y, Takata Y, Shen J, Chen T. Maternal Setdb1 Is Required for Meiotic Progression and Preimplantation Development in Mouse. PLoS Genet 2016; 12:e1005970. [PMID: 27070551 PMCID: PMC4829257 DOI: 10.1371/journal.pgen.1005970] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 03/10/2016] [Indexed: 11/18/2022] Open
Abstract
Oocyte meiotic progression and maternal-to-zygote transition are accompanied by dynamic epigenetic changes. The functional significance of these changes and the key epigenetic regulators involved are largely unknown. Here we show that Setdb1, a lysine methyltransferase, controls the global level of histone H3 lysine 9 di-methyl (H3K9me2) mark in growing oocytes. Conditional deletion of Setdb1 in developing oocytes leads to meiotic arrest at the germinal vesicle and meiosis I stages, resulting in substantially fewer mature eggs. Embryos derived from these eggs exhibit severe defects in cell cycle progression, progressive delays in preimplantation development, and degeneration before reaching the blastocyst stage. Rescue experiments by expressing wild-type or inactive Setdb1 in Setdb1-deficient oocytes suggest that the catalytic activity of Setdb1 is essential for meiotic progression and early embryogenesis. Mechanistically, up-regulation of Cdc14b, a dual-specificity phosphatase that inhibits meiotic progression, greatly contributes to the meiotic arrest phenotype. Setdb1 deficiency also leads to derepression of transposons and increased DNA damage in oocytes, which likely also contribute to meiotic defects. Thus, Setdb1 is a maternal-effect gene that controls meiotic progression and is essential for early embryogenesis. Our results uncover an important link between the epigenetic machinery and the major signaling pathway governing meiotic progression.
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Affiliation(s)
- Jeesun Kim
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Hongbo Zhao
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital and Institute of Obstetrics and Gynecology, Fudan University, Shanghai, People’s Republic of China
| | - Jiameng Dan
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Soojin Kim
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Swanand Hardikar
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Debra Hollowell
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Kevin Lin
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Yue Lu
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Yoko Takata
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
| | - Jianjun Shen
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, United States of America
| | - Taiping Chen
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Smithville, Texas, United States of America
- The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, Texas, United States of America
- * E-mail:
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Chen X, Schneider-Broussard R, Hollowell D, McArthur M, Jeter CR, Benavides F, DiGiovanni J, Tang DG. Abnormal differentiation, hyperplasia and embryonic/perinatal lethality in BK5-T/t transgenic mice. Differentiation 2008; 77:324-34. [PMID: 19272531 DOI: 10.1016/j.diff.2008.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2008] [Revised: 08/28/2008] [Accepted: 10/02/2008] [Indexed: 01/20/2023]
Abstract
The cell-of-origin has a great impact on the types of tumors that develop and the stem/progenitor cells have long been considered main targets of malignant transformation. The SV40 (SV40-Simian Virus 40) large T and small t antigens (T/t), have been targeted to multiple-differentiated cellular compartments in transgenic mice. In most of these studies, transgenic animals develop tumors without apparent defects in animal development. In this study, we used the bovine keratin 5 (BK5) promoter to target the T/t antigens to stem/progenitor cell-containing cytokeratin 5 (CK5) cellular compartment. A transgene construct, BK5-T/t, was made and microinjected into the male pronucleus of FVB/N mouse oocytes. After implanting approximately 1700 embryos, only 7 transgenics were obtained, including 4 embryos (E9.5, E13, E15, and E20) and 3 postnatal animals, which died at P1, P2, and P18, respectively. Immunohistological analysis revealed aberrant differentiation and prominent hyperplasia in several transgenic CK5 tissues, especially the upper digestive organs (tongue, oral mucosa, esophagus, and forestomach) and epidermis, the latter of which also showed focal dysplasia. Altogether, these results indicate that constitutive expression of the T/t antigens in CK5 cellular compartment results in abnormal epithelial differentiation and leads to embryonic/perinatal animal lethality.
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Affiliation(s)
- Xin Chen
- Department of Carcinogenesis, The University of Texas M.D. Anderson Cancer Center, Science Park-Research Division, 1808 Park Road 1-C, P.O. Box 389, Smithville, TX 78957, USA
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Abstract
Neonatal FVB/N mice inoculated with ts1, a temperature-sensitive mutant of Moloney murine leukemia virus TB, developed fatal immunodeficiencies and neurologic disorders. In this study, we tested the role of transfer of maternal humoral immunity in preventing ts1-induced disease syndrome in the neonatal mice. We compared the levels of protection provided through maternal antibodies both pre- and postnatally by separating infected neonatal mice into four different groups. The first group was born of and nursed by nonimmune mothers, the second was born of immune mothers but nursed by nonimmune mothers, the third was born of nonimmune mothers but nursed by immune mothers, and the fourth was born of and nursed by immune mothers. Our major findings are: (1) adult mice generate a strong antiviral antibody response; (2) maternal antibody is protective for the newborns and primarily transferred by breast milk; (3) virus titers were cleared in the periphery and the CNS of neonates nursing on immune mothers; and (4) the majority of antiviral antibody generated was specific for the gp70. These results indicate that humoral immunity can be passed efficiently from mother to baby through breast milk and can provide strong protection against neurotropic retrovirus.
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Affiliation(s)
- K Saha
- University of Texas, M. D. Anderson Cancer Center, Science Park-Research Division, Smithville 78957
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