1
|
Zhu HY, Kang XJ, Jin L, Zhang PY, Wu H, Tan T, Yu Y, Fan Y. Histone demethylase KDM4A overexpression improved the efficiency of corrected human tripronuclear zygote development. Mol Hum Reprod 2021; 27:6143036. [PMID: 33599278 PMCID: PMC7939728 DOI: 10.1093/molehr/gaab012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/03/2021] [Indexed: 01/22/2023] Open
Abstract
Human zygotes are difficult to obtain for research because of limited resources and ethical debates. Corrected human tripronuclear (ch3PN) zygotes obtained by removal of the extra pronucleus from abnormally fertilized tripronuclear (3PN) zygotes are considered an alternative resource for basic scientific research. In the present study, eight-cell and blastocyst formation efficiency were significantly lower in both 3PN and ch3PN embryos than in normal fertilized (2PN) embryos, while histone H3 lysine 9 trimethylation (H3K9me3) levels were much higher. It was speculated that the aberrant H3K9me3 level detected in ch3PN embryos may be related to low developmental competence. Microinjection of 1000 ng/µl lysine-specific demethylase 4A (KDM4A) mRNA effectively reduced the H3K9me3 level and significantly increased the developmental competence of ch3PN embryos. The quality of ch3PN zygotes improved as the grading criteria, cell number and pluripotent expression significantly increased in response to KDM4A mRNA injection. Developmental genes related to zygotic genome activation (ZGA) were also upregulated. These results indicate that KDM4A activates the transcription of the ZGA program by enhancing the expression of related genes, promoting epigenetic modifications and regulating the developmental potential of ch3PN embryos. The present study will facilitate future studies of ch3PN embryos and could provide additional options for infertile couples.
Collapse
Affiliation(s)
- Hai-Ying Zhu
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Xiang-Jin Kang
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Long Jin
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| | - Pu-Yao Zhang
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Han Wu
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Tao Tan
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Yang Yu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Yong Fan
- Department of Gynecology and Obstetrics, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, China
| |
Collapse
|
2
|
Animal and Human Tissue Models of Vertical Listeria monocytogenes Transmission and Implications for Other Pregnancy-Associated Infections. Infect Immun 2018; 86:IAI.00801-17. [PMID: 29483290 DOI: 10.1128/iai.00801-17] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Intrauterine infections lead to serious complications for mother and fetus, including preterm birth, maternal and fetal death, and neurological sequelae in the surviving offspring. Improving maternal and child heath is a global priority. Yet, the development of strategies to prevent and treat pregnancy-related diseases has lagged behind progress made in other medical fields. One of the challenges is finding tractable model systems that replicate the human maternal-fetal interface. Animal models offer the ability to study pathogenesis and host defenses in vivo However, the anatomy of the maternal-fetal interface is highly divergent across species. While many tools are available to study host responses in the pregnant mouse model, other animals have placentas that are more similar to that of humans. Here we describe new developments in animal and human tissue models to investigate the pathogenesis of listeriosis at the maternal-fetal interface. We highlight gaps in existing knowledge and make recommendations on how they can be filled.
Collapse
|
3
|
Yao G, Xu J, Xin Z, Niu W, Shi S, Jin H, Song W, Wang E, Yang Q, Chen L, Sun Y. Developmental potential of clinically discarded human embryos and associated chromosomal analysis. Sci Rep 2016; 6:23995. [PMID: 27045374 PMCID: PMC4820740 DOI: 10.1038/srep23995] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 03/18/2016] [Indexed: 01/30/2023] Open
Abstract
Clinically discarded human embryos, which are generated from both normal and abnormal fertilizations, have the potential of developing into blastocysts. A total of 1,649 discarded human embryos, including zygotes containing normal (2PN) and abnormal (0PN, 1PN, 3PN and ≥4PN) pronuclei and prematurely cleaved embryos (2Cell), were collected for in vitro culture to investigate their developmental potential and chromosomal constitution using an SNP array-based chromosomal analysis. We found that blastocyst formation rates were 63.8% (for 2Cell embryos), 22.6% (2PN), 16.7% (0PN), 11.2% (3PN) and 3.6% (1PN). SNP array-based chromosomal analysis of the resultant blastocysts revealed that the percentages of normal chromosomes were 55.2% (2Cell), 60.7% (2PN), 44.4% (0PN) and 47.4% (0PN). Compared with clinical preimplantation genetic diagnosis (PGD) data generated with clinically acceptable embryos, results of the SNP array-based chromosome analysis on blastocysts from clinically discarded embryos showed similar values for the frequency of abnormal chromosome occurrence, aberrant signal classification and chromosomal distribution. The present study is perhaps the first systematic analysis of the developmental potential of clinically discarded embryos and provides a basis for future studies.
Collapse
Affiliation(s)
- Guidong Yao
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiawei Xu
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhimin Xin
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenbin Niu
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Senlin Shi
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Haixia Jin
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenyan Song
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Enyin Wang
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qingling Yang
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lei Chen
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yingpu Sun
- Center for Reproductive Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| |
Collapse
|
4
|
Pronuclear removal of tripronuclear zygotes can establish heteroparental normal karyotypic human embryonic stem cells. J Assist Reprod Genet 2016; 33:255-63. [PMID: 26727933 DOI: 10.1007/s10815-015-0634-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022] Open
Abstract
PURPOSE This study aimed to derive heteroparental normal karyotypic human embryonic stem cells (hESCs) from microsurgically corrected tripronuclear (3PN) zygotes. METHODS After sequential culture for 5-6 days, embryos developed from microsurgically corrected 3PN zygotes were analyzed by fluorescence in situ hybridization (FISH) using probes for chromosomes 17, X and Y. Intact 3PN zygotes from clinical in vitro fertilization (IVF) cycles were cultured as the control group. The inner cell mass (ICM) of blastocysts that developed from microsurgically corrected 3PN zygotes was used to derive hESC lines, and the stem cell characteristics of these lines were evaluated. G-banding analysis was adopted to identify the karyotype of the hESC line, and the heteroparental inheritance of the hESC line was analyzed by DNA fingerprinting analysis. RESULTS The blastocyst formation rate (13.5 %) of the microsurgically corrected 3PN zygotes was significantly higher (P < 0.05) than that of intact 3PN zygotes (8.7 %). The diploid rate of the blastocysts (55.0 %) was significantly higher (P < 0.05) than that of the arrested cleavage-stage embryos (18.4 %) in microsurgically corrected 3PN zygotes. The triploid rate of the microsurgically corrected 3PN zygotes (5.7 %) was significantly lower (P < 0.01) than that of intact 3PN zygotes (19.4 %). Furthermore, we established one heteroparental normal karyotypic hESC line from the microsurgically corrected tripronuclear zygotes. CONCLUSIONS Pronuclear removal can effectively remove the surplus chromosome set of 3PN zygotes. A combination of pronuclear removal and blastocyst culture enables the selection of diploidized blastocysts from which heteroparental normal karyotypic hESC lines can be derived.
Collapse
|
5
|
Ding C, Huang S, Qi Q, Fu R, Zhu W, Cai B, Hong P, Liu Z, Gu T, Zeng Y, Wang J, Xu Y, Zhao X, Zhou Q, Zhou C. Derivation of a Homozygous Human Androgenetic Embryonic Stem Cell Line. Stem Cells Dev 2015; 24:2307-16. [PMID: 26076706 DOI: 10.1089/scd.2015.0031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Chenhui Ding
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Sunxing Huang
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Quan Qi
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Rui Fu
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Wanwan Zhu
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Bing Cai
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Pingping Hong
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Zhengxin Liu
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Tiantian Gu
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yanhong Zeng
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Jing Wang
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Yanwen Xu
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| | - Xiaoyang Zhao
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qi Zhou
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Canquan Zhou
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangdong, China
- The Key Laboratory of Reproductive Medicine of Guangdong Province, Guangdong, China
| |
Collapse
|
6
|
Yu Y, Gao Q, Zhao HC, Li R, Gao JM, Ding T, Bao SY, Zhao Y, Sun XF, Fan Y, Qiao J. Ascorbic acid improves pluripotency of human parthenogenetic embryonic stem cells through modifying imprinted gene expression in the Dlk1-Dio3 region. Stem Cell Res Ther 2015; 6:69. [PMID: 25879223 PMCID: PMC4425892 DOI: 10.1186/s13287-015-0054-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 10/29/2014] [Accepted: 03/16/2015] [Indexed: 12/13/2022] Open
Abstract
Introduction Human parthenogenetic embryonic stem cells (hpESCs) are generated from artificially activated oocytes, however, the issue of whether hpESCs have equivalent differentiation ability to human fertilized embryonic stem cells remains controversial. Methods hpESCs were injected into male severe combined immunodeficiency (SCID) mice and the efficiency of teratoma formation was calculated. Then the gene expression and methylation modification were detected by real time-PCR and bisulfate methods. Results Comparison of five hpESCs with different differentiation abilities revealed that levels of paternal genes in the Dlk1-Dio3 region on chromosome 14 in the hpESCs with high differentiation potential are enhanced, but strictly methylated and silenced in the hpESCs with lower differentiation potential. Treatment with ascorbic acid, rescued their ability to support teratoma formation and altered the expression profiles of paternally expressed genes in hpESCs that could not form teratoma easily. No differences in the expression of other imprinting genes were evident between hpESCs with higher and lower differentiation potential, except for those in the Dlk1-Dio3 region. Conclusions The Dlk1-Dio3 imprinting gene cluster distinguishes the differentiation ability of hpESCs. Moreover, modification by ascorbic acid may facilitate application of hpESCs to clinical settings in the future by enhancing their pluripotency. Electronic supplementary material The online version of this article (doi:10.1186/s13287-015-0054-9) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yang Yu
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China. .,Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, 100191, China. .,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.
| | - Qian Gao
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China.
| | - Hong-cui Zhao
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China.
| | - Rong Li
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China. .,Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, 100191, China. .,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.
| | - Jiang-man Gao
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China.
| | - Ting Ding
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China. .,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.
| | - Si-yu Bao
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China. .,Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, 100191, China.
| | - Yue Zhao
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China. .,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.
| | - Xiao-fang Sun
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, the Third Affiliated Hospital of Guangzhou Medical University, No. 63, Liwan District, Guangzhou City, 510150, Guangdong Province, People's Republic of China.
| | - Yong Fan
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China. .,Key Laboratory for Major Obstetric Diseases of Guangdong Province, the Third Affiliated Hospital of Guangzhou Medical University, No. 63, Liwan District, Guangzhou City, 510150, Guangdong Province, People's Republic of China.
| | - Jie Qiao
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Peking University Third Hospital, No. 49 HuaYuan North Road, HaiDian District, Beijing, 100191, People's Republic of China. .,Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, 100191, China. .,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.
| |
Collapse
|
7
|
Yao L, Wang P, Liu J, Chen J, Tang H, Sha H. Ooplast transfer of triploid pronucleus zygote improve reconstructed human-goat embryonic development. Int J Clin Exp Med 2014; 7:3678-3686. [PMID: 25419417 PMCID: PMC4238477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 09/20/2014] [Indexed: 06/04/2023]
Abstract
Poor development of the interspecies somatic cell nuclear transfer (iSCNT) embryos was due to nuclear-mitochondrial incompatibility. In humans, it has been known that ooplast transfer (OT) could support normal fertilization, the development of embryos and prevents the transmission of mtDNA disease. To investigate whether OT could support development of the iSCNT embryos, the ooplast of Triploid Pronucleus (3PN) zygote which would be discarded in IVF lab was transferred into the enucleated goat oocytes to construct humanized iSCNT embryos in our study. The results showed the 3PN-OT could significantly improve the early development of humanized iSCNT embryos. The percentage of blastocyst development of OT group was also higher than that of the control group. Interestingly, the morphology of some OT-iSCNT blastocysts was similar to normal human blastocysts in vitro fertilization, while the morphology of iSCNT blastocysts from control group was similar to goat blastocysts. Importantly, the pluripotent marker Oct4 of the OT-iSCNT blastocyst was expressed stronger than that of the control group. These results suggested that 3PN-OT could improve the developmental potency of human iSCNT embryos and would facilitate establishing ESCs from iSCNT blastocysts.
Collapse
Affiliation(s)
- Ling Yao
- Department of Traditional Chinese Medicine, Chongqing Medical UniversityChongqing 400016, China
| | - Pu Wang
- State Key Laboratory of Medical Neurobiology, Department of Neurobiology, Institutes of Brain Science, School of Basic Medical Sciences and Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan UniversityShanghai 200032, China
| | - Jia Liu
- Experimental Teaching Center, Chongqing Medical UniversityChongqing 401331, China
| | - Jianquan Chen
- Shanghai Transgenic Research CenterShanghai 201203, China
| | - Hailiang Tang
- Department of Neurosurgery, Huashan HospitalShanghai 200040, China
| | - Hongying Sha
- State Key Laboratory of Medical Neurobiology, Department of Neurobiology, Institutes of Brain Science, School of Basic Medical Sciences and Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan UniversityShanghai 200032, China
| |
Collapse
|
8
|
Fan Y, Li R, Huang J, Zhao HC, Ding T, Sun X, Yu Y, Qiao J. Improved efficiency of microsurgical enucleated tripronuclear zygotes development and embryonic stem cell derivation by supplementing epidermal growth factor, brain-derived neurotrophic factor, and insulin-like growth factor-1. Stem Cells Dev 2014; 23:563-75. [PMID: 24261581 DOI: 10.1089/scd.2013.0420] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Human embryonic stem cells (hESCs) hold great promise for future clinical cell therapies because of their unique potential to differentiate into all human cell types. However, the destruction of normal fertilized embryos and the derivation of hESCs for research has resulted in polarized ethical debates, with most of the controversy centered on embryo destruction. Therefore, due to less ethical controversy surrounding them, abnormal fertilized zygotes that are usually discarded are a potential feasible resource for the derivation of hESCs. Microsurgery on human polyspermic zygotes can contribute to the derivation of hESCs, but the efficiency is much lower. Here, we reported a culture system to enhance the developmental competence of such microsurgical human polyspermic zygotes by EGF-BDNF-IGF-1 combination, which eventually resulted in the increased derivation efficiency of hESCs from them. We found that the developmental efficiency of microsurgical enucleated tripronuclear (3PN) embryos cultured with the EGF-BDNF-IGF-1 combination was significantly increased compared with the control group. More importantly, when the microsurgical enucleated 3PN embryos were cultured in medium supplemented with EGF-BDNF-IGF-1, the frequency ratio of chromosome abnormality was reduced. Our present study will facilitate the development of hESC line derivation in subsequent studies and also provide an additional choice for infertile couples.
Collapse
Affiliation(s)
- Yong Fan
- 1 Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|