1
|
Kohri N, Akizawa H, Iisaka S, Bai H, Yanagawa Y, Takahashi M, Komatsu M, Kawai M, Nagano M, Kawahara M. Trophectoderm regeneration to support full-term development in the inner cell mass isolated from bovine blastocyst. J Biol Chem 2019; 294:19209-19223. [PMID: 31704705 DOI: 10.1074/jbc.ra119.010746] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/05/2019] [Indexed: 12/26/2022] Open
Abstract
Which comes first: tissue structure or cell differentiation? Although different cell types establish distinct structures delineating the inside and outside of an embryo, they progressively become specified by the blastocyst stage, when two types of cell lineages are formed: the inner cell mass (ICM) and the trophectoderm (TE). This inside-outside aspect can be experimentally converted by the isolation of the ICM from a blastocyst, leading to a posteriori externalization of the blastomeres composing the outermost layer of the ICM. Here, we investigated the totipotency of isolated mouse and bovine ICMs to determine whether they are competent for TE regeneration. Surprisingly, a calf was generated from the bovine isolated ICM with re-formed blastocoel (re-iICM), but no mouse re-iICMs developed to term. To further explore the cause of difference in developmental competency between the mouse and bovine re-iICMs, we investigated the SOX17 protein expression that is a representative molecular marker of primitive endoderm. The localization pattern of SOX17 was totally different between mouse and bovine embryos. Particularly, the ectopic SOX17 localization in the TE might be associated with lethality of mouse re-iICMs. Meanwhile, transcriptome sequencing revealed that some of the bovine re-iICMs showed transcriptional patterns of TE-specific genes similar to those of whole blastocysts. Our findings suggest that TE regeneration competency is maintained longer in bovine ICMs than in mouse ICMs and provide evidence that the ICM/TE cell fate decision is influenced by structural determinants, including positional information of each blastomere in mammalian embryos.
Collapse
Affiliation(s)
- Nanami Kohri
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Hiroki Akizawa
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Sakie Iisaka
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Hanako Bai
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Yojiro Yanagawa
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
| | - Masashi Takahashi
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Masaya Komatsu
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| | - Masahito Kawai
- Shizunai Livestock Farm, Field Science Center for Northern Biosphere, Hokkaido University, Hokkaido 056-0141, Japan
| | - Masashi Nagano
- Laboratory of Theriogenology, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
| | - Manabu Kawahara
- Laboratory of Animal Breeding and Reproduction, Research Faculty of Agriculture, Hokkaido University, Kita-ku, Kita 9, Nishi 9, Sapporo 060-8589, Japan
| |
Collapse
|
2
|
VPA selectively regulates pluripotency gene expression on donor cell and improve SCNT embryo development. In Vitro Cell Dev Biol Anim 2018; 54:496-504. [PMID: 29943354 DOI: 10.1007/s11626-018-0272-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/07/2018] [Indexed: 01/21/2023]
Abstract
SCNT technology has been successfully used to clone a variety of mammals, but the cloning efficiency is very low. This low efficiency is likely due to the incomplete reprogramming of SCNT embryos. Histone modification and DNA methylation may participate in these events. Thus, it would be interesting to attempt to improve the efficiency of SCNT by using a HDACi VPA. In order to guarantee the effect of VPA and reduce its cytotoxicity, a comprehensive analysis of the cell proliferation and histone modification was performed. The results showed that 0.5 and 1 mM VPA treatment for 24 h were the optimal condition. According to the results, H3K4me3 was increased in 0.5 and 1 mM VPA groups, whereas H3K9me2 was significantly decreased. These are the signals of gene-activation. In addition, VPA treatment led to the overexpression of Oct4 and Nanog. These indicated that VPA-treated cells had similar patterns of histone to zygotic embryos, and may be more favorable for reprograming. A total of 833 cloned embryos were produced from the experimental replicates of VPA-treated donor cells. In 1 mM treatment group, the blastocyst rates were significantly increased compared with control. At the same time, our findings demonstrated the interrelation between DNA methylation and histone modifications.
Collapse
|
3
|
Hekmatimoghaddam S, Dehghani Firoozabadi A, Zare-Khormizi MR, Pourrajab F. Sirt1 and Parp1 as epigenome safeguards and microRNAs as SASP-associated signals, in cellular senescence and aging. Ageing Res Rev 2017; 40:120-141. [PMID: 28993289 DOI: 10.1016/j.arr.2017.10.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 09/25/2017] [Accepted: 10/05/2017] [Indexed: 01/25/2023]
Abstract
Cellular senescence (CS) is underlying mechanism of organism aging and is closely interconnected with age-related diseases (ARDs). Thus, any attempt that influences CS, may be undertaken to reverse or inhibit senescence, whereby could prolong healthy life span. Until now, two main proposes are epigenetic and genetic modifications of cell fate. The first one concerns rejuvenation through effective reprogramming in cells undergoing senescence, or derived from very old or progeroid patients, by which is effective in vitro in induced pluripotent stem cells (iPSCs). The second approach concerns modification of senescence signaling pathways like as IGF-induced agents. However, senescence research has experienced an unprecedented advance over recent years, particularly with the discovery that the rate of senescence is controlled, at least to some extent, by epigenetic pathways and biochemical processes conserved in evolution. In this review we try to concentrate on very specific pathways (DNA damage response, DDR, and epigenetic modifiers) and very specific determinants (senescence-associated secretory phenotype, SASP-miRNAs) of human premature aging. A major challenge is to dissect the interconnectedness between the candidate elements and their relative contributions to aging, with the final goal of identifying new opportunities for design of novel anti-aging treatments or avoidance of age-associated manifestations. While knowing that aging is unavoidable and we cannot expect its elimination, but prolonging healthy life span is a goal worth serious consideration.
Collapse
Affiliation(s)
- Seyedhossein Hekmatimoghaddam
- Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran; Department of Laboratory Sciences, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | | | | | - Fatemeh Pourrajab
- Department of Biochemistry and Molecular Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| |
Collapse
|
4
|
Um S, Lee H, Zhang Q, Kim HY, Lee JH, Seo BM. Valproic Acid Modulates the Multipotency in Periodontal Ligament Stem Cells via p53-Mediated Cell Cycle. Tissue Eng Regen Med 2017; 14:153-162. [PMID: 30603472 DOI: 10.1007/s13770-017-0027-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 07/31/2016] [Accepted: 08/04/2016] [Indexed: 12/20/2022] Open
Abstract
Human periodontal ligament stem cells (PDLSCs), a type of mesenchymal stem cell, are a promising source for dental regeneration and are identified in human periodontal ligaments from extracted third molars. Valproic acid (VPA) is a histone deacetylase inhibitor that has been used as a wide-spectrum antiepileptic drug and a medication for mood disorders. VPA has shown several effects on increasing the pluripotency of embryonic stem cells and controlling osteogenic differentiation, besides the prevention of seizures. However, its effect on proliferation and osteogenesis depends on the cell type and concentration. The aim of this study was to investigate the effects of cyclic and constant VPA treatment on PDLSCs. Proliferation and apoptosis of PDLSCs were determined with cyclic and constant VPA treatment. In cemento/osteogenic differentiation, osteogenic markers decreased significantly after cyclic treatment with 0.5 mM VPA. In contrast, VPA enhanced osteogenic differentiation after constant treatment. With cyclic VPA treatment, p53 levels related to apoptotic pathway decreased to induce proliferation. These findings indicated that VPA has different roles in proliferation and differentiation of PDLSCs in vitro and in vivo via p53-related pathway.
Collapse
Affiliation(s)
- Soyoun Um
- 1Department of Dental Science, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
- 5Dental Research Institute, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
| | - Ho Lee
- 2Department of Oral and Maxillofacial Surgery, SMG-SNU Boramae Medical Center, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061 Korea
| | - Qingbin Zhang
- 3Department of Temporomandibular Joint Diseases, School and Hospital of Stomatology, Guangzhou Medical University, Guangzhou, 510182 China
| | - Hui Young Kim
- 4Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
- 5Dental Research Institute, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
| | - Joo-Hee Lee
- 4Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
- 5Dental Research Institute, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
| | - Byoung Moo Seo
- 4Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
- 5Dental Research Institute, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080 Korea
| |
Collapse
|
5
|
Selokar NL, Saini M, Agrawal H, Palta P, Chauhan MS, Manik R, Singla SK. Valproic Acid Increases Histone Acetylation and Alters Gene Expression in the Donor Cells But Does Not Improve the In Vitro Developmental Competence of Buffalo (Bubalus bubalis) Embryos Produced by Hand-Made Cloning. Cell Reprogram 2017; 19:10-18. [PMID: 28055238 DOI: 10.1089/cell.2016.0029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Use of histone deacetylase inhibitors (HDACis) is believed to improve the developmental competence and quality of cloned embryos produced. We examined the effects of treatment of buffalo fibroblasts with valproic acid (VPA), a HDACi on these cells and on embryos produced from them by hand-made cloning. VPA treatment (1.5, 3.0, or 4.5 mM) altered (p < 0.05) the growth characteristics and relative expression level of HDAC1, DNMT1, DNMT3a, P53, and CASPASE3, and the global level of H3K9/14ac, H4K5ac, and H3K18ac but not H3K27me3 in the cells. After the use of VPA-treated donor cells for producing embryos, the cleavage and blastocyst rate, and total cell number were not significantly affected; however, the apoptotic index was lower (p < 0.05) for 3.0 or 4.5 mM VPA group than for 1.5 mM VPA group or the controls. In the cloned blastocysts, the expression level of HDAC1 was higher (p < 0.05) and CASPASE3 was lower (p < 0.05), whereas that of DNMT1, DNMT3a, and P53 and the global level of H3K9/14ac were not significantly affected after VPA treatment of donor cells. In conclusion, these results suggest that VPA treatment of donor cells adversely affects their growth characteristics, increases histone acetylation, and alters gene expression but does not improve production rate of cloned embryos.
Collapse
Affiliation(s)
- Naresh L Selokar
- 1 Animal Biotechnology Centre, National Dairy Research Institute , Karnal, India .,2 Department of Animal Physiology and Reproduction, Central Institute for Research on Buffaloes , Hisar, India
| | - Monika Saini
- 1 Animal Biotechnology Centre, National Dairy Research Institute , Karnal, India .,2 Department of Animal Physiology and Reproduction, Central Institute for Research on Buffaloes , Hisar, India
| | - Himanshu Agrawal
- 1 Animal Biotechnology Centre, National Dairy Research Institute , Karnal, India
| | - Prabhat Palta
- 1 Animal Biotechnology Centre, National Dairy Research Institute , Karnal, India
| | | | - Radheysham Manik
- 1 Animal Biotechnology Centre, National Dairy Research Institute , Karnal, India
| | - Suresh Kumar Singla
- 1 Animal Biotechnology Centre, National Dairy Research Institute , Karnal, India
| |
Collapse
|
6
|
Kim E, Hwang SU, Yoo H, Yoon JD, Jeon Y, Kim H, Jeung EB, Lee CK, Hyun SH. Putative embryonic stem cells derived from porcine cloned blastocysts using induced pluripotent stem cells as donors. Theriogenology 2016; 85:601-16. [DOI: 10.1016/j.theriogenology.2015.09.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/20/2015] [Accepted: 09/28/2015] [Indexed: 12/23/2022]
|
7
|
Isaji Y, Yoshida K, Imai H, Yamada M. An intracytoplasmic injection of deionized bovine serum albumin immediately after somatic cell nuclear transfer enhances full-term development of cloned mouse embryos. J Reprod Dev 2015; 61:503-10. [PMID: 26227108 PMCID: PMC4685215 DOI: 10.1262/jrd.2015-031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In mouse somatic cell nuclear transfer (SCNT), polyvinylpyrrolidone (PVP) is typically included in the nuclear donor injection medium. However, the cytotoxicity of PVP, which is injected into the cytoplasm of oocytes, has recently become a cause of concern. In the present study, we determined whether bovine serum albumin deionized with an ion-exchange resin treatment (d-BSA) was applicable to the nuclear donor injection medium in SCNT as an alternative to PVP. The results obtained showed that d-BSA introduced into the cytoplasm of an enucleated oocyte together with a donor nucleus significantly enhanced the rate of in vitro development of cloned embryos to the blastocyst stage compared with that of a conventional nuclear injection with PVP in SCNT. We also defined the enhancing effects of d-BSA on the blastocyst formation rate when d-BSA was injected into the cytoplasm of oocytes reconstructed using the fusion method with a hemagglutinating virus of Japan envelope before oocyte activation. Furthermore, immunofluorescence experiments revealed that the injected d-BSA increased the acetylation levels of histone H3 lysine 9 and histone H4 lysine 12 in cloned pronuclear (PN) and 2-cell embryos. The injection of d-BSA before oocyte activation also increased the production of cloned mouse offspring. These results suggested that intracytoplasmic injection of d-BSA into SCNT oocytes before oocyte activation was beneficial for enhancing the in vitro and in vivo development of mouse cloned embryos through epigenetic modifications to nuclear reprogramming.
Collapse
Affiliation(s)
- Yuuki Isaji
- Laboratory of Reproductive Biology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | | | | | | |
Collapse
|
8
|
Suzuki S, Nozawa Y, Tsukamoto S, Kaneko T, Manabe I, Imai H, Minami N. CHD1 acts via the Hmgpi pathway to regulate mouse early embryogenesis. Development 2015; 142:2375-84. [PMID: 26092847 DOI: 10.1242/dev.120493] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 05/14/2015] [Indexed: 11/20/2022]
Abstract
The protein CHD1 is a member of the family of ATPase-dependent chromatin remodeling factors. CHD1, which recognizes trimethylated histone H3 lysine 4, has been implicated in transcriptional activation in organisms ranging from yeast to humans. It is required for pre-mRNA maturation, maintenance of mouse embryonic stem cell pluripotency and rapid growth of the mouse epiblast. However, the function(s) of CHD1 in mouse preimplantation embryos has not yet been examined. Here, we show that loss of CHD1 function led to embryonic lethality after implantation. In mouse embryos in which Chd1 was targeted by siRNA microinjection, the expression of the key regulators of cell fate specification Pou5f1 (also known as Oct4), Nanog and Cdx2 was dramatically decreased, starting at mid-preimplantation gene activation (MGA). Moreover, expression of Hmgpi and Klf5, which regulate Pou5f1, Nanog and Cdx2, was also significantly suppressed at zygotic gene activation (ZGA). Suppression of Hmgpi expression in Chd1-knockdown embryos continued until the blastocyst stage, whereas suppression of Klf5 expression was relieved by the morula stage. Next, we rescued HMGPI expression via Hmgpi mRNA microinjection in Chd1-knockdown embryos. Consequently, Pou5f1, Nanog and Cdx2 expression was restored at MGA and live offspring were recovered. These findings indicate that CHD1 plays important roles in mouse early embryogenesis via activation of Hmgpi at ZGA.
Collapse
Affiliation(s)
- Shinnosuke Suzuki
- Laboratory of Reproductive Biology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yusuke Nozawa
- Laboratory of Reproductive Biology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Satoshi Tsukamoto
- Laboratory of Animal and Genome Sciences Section, National Institute of Radiological Sciences, Chiba 263-8555, Japan
| | - Takehito Kaneko
- Institute of Laboratory Animals, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Ichiro Manabe
- Department of Cardiovascular Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Hiroshi Imai
- Laboratory of Reproductive Biology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Naojiro Minami
- Laboratory of Reproductive Biology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| |
Collapse
|
9
|
Suzuki S, Nozawa Y, Tsukamoto S, Kaneko T, Imai H, Minami N. Histone methyltransferase Smyd3 regulates early embryonic lineage commitment in mice. Reproduction 2015; 150:21-30. [PMID: 25918436 DOI: 10.1530/rep-15-0019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 04/24/2015] [Indexed: 01/21/2023]
Abstract
SET and MYND domain-containing protein 3 (Smyd3) is a histone H3 lysine 4 (H3K4) di- and tri-methyltransferase that forms a transcriptional complex with RNA polymerase II and activates the transcription of oncogenes and cell cycle genes in human cancer cells. However, the study of Smyd3 in mammalian early embryonic development has not yet been addressed. In the present study, we investigated the expression pattern of Smyd3 in mouse preimplantation embryos and the effects of RNA interference (RNAi)-mediated Smyd3 repression on the development of mouse embryos. We showed that Smyd3 mRNA levels increased after the two-cell stage, peaked at the four-cell stage, and gradually decreased thereafter. Moreover, in two-cell to eight-cell embryos, SMYD3 staining was more intense in the nuclei than it was in the cytoplasm. In Smyd3-knockdown embryos, the percentage of inner cell mass (ICM)-derived colony formation and trophectoderm (TE)-derived cell attachment were significantly decreased, which resulted in a reduction in the number of viable offspring. Furthermore, the expression of Oct4 and Cdx2 during mid-preimplantation gene activation was significantly decreased in Smyd3-knockdown embryos. In addition, the transcription levels of ICM and epiblast markers, such as Oct4, Nanog, and Sox2, the transcription levels of primitive endoderm markers, such as Gata6, and the transcription levels of TE markers, such as Cdx2 and Eomes, were significantly decreased in Smyd3-knockdown blastocysts. These findings indicate that SMYD3 plays an important role in early embryonic lineage commitment and peri-implantation development through the activation of lineage-specific genes.
Collapse
Affiliation(s)
- Shinnosuke Suzuki
- Laboratory of Reproductive BiologyGraduate School of Agriculture, Kyoto University, Kyoto 606-8052, JapanLaboratory of Animal and Genome Sciences SectionNational Institute of Radiological Sciences, Chiba 263-8555, JapanGraduate School of MedicineInstitute of Laboratory Animals, Kyoto University, Kyoto 606-8501, Japan
| | - Yusuke Nozawa
- Laboratory of Reproductive BiologyGraduate School of Agriculture, Kyoto University, Kyoto 606-8052, JapanLaboratory of Animal and Genome Sciences SectionNational Institute of Radiological Sciences, Chiba 263-8555, JapanGraduate School of MedicineInstitute of Laboratory Animals, Kyoto University, Kyoto 606-8501, Japan
| | - Satoshi Tsukamoto
- Laboratory of Reproductive BiologyGraduate School of Agriculture, Kyoto University, Kyoto 606-8052, JapanLaboratory of Animal and Genome Sciences SectionNational Institute of Radiological Sciences, Chiba 263-8555, JapanGraduate School of MedicineInstitute of Laboratory Animals, Kyoto University, Kyoto 606-8501, Japan
| | - Takehito Kaneko
- Laboratory of Reproductive BiologyGraduate School of Agriculture, Kyoto University, Kyoto 606-8052, JapanLaboratory of Animal and Genome Sciences SectionNational Institute of Radiological Sciences, Chiba 263-8555, JapanGraduate School of MedicineInstitute of Laboratory Animals, Kyoto University, Kyoto 606-8501, Japan
| | - Hiroshi Imai
- Laboratory of Reproductive BiologyGraduate School of Agriculture, Kyoto University, Kyoto 606-8052, JapanLaboratory of Animal and Genome Sciences SectionNational Institute of Radiological Sciences, Chiba 263-8555, JapanGraduate School of MedicineInstitute of Laboratory Animals, Kyoto University, Kyoto 606-8501, Japan
| | - Naojiro Minami
- Laboratory of Reproductive BiologyGraduate School of Agriculture, Kyoto University, Kyoto 606-8052, JapanLaboratory of Animal and Genome Sciences SectionNational Institute of Radiological Sciences, Chiba 263-8555, JapanGraduate School of MedicineInstitute of Laboratory Animals, Kyoto University, Kyoto 606-8501, Japan
| |
Collapse
|
10
|
Mallol A, Santaló J, Ibáñez E. Psammaplin a improves development and quality of somatic cell nuclear transfer mouse embryos. Cell Reprogram 2014; 16:392-406. [PMID: 25068567 DOI: 10.1089/cell.2014.0012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Faulty reprogramming of the donor somatic nucleus to a totipotent embryonic state by the recipient oocyte is a major obstacle for cloning success. Accordingly, treatment of cloned embryos with epigenetic modifiers, such as histone deacetylase inhibitors (HDACi), enhances cloning efficiency. The purpose of our study was to further explore the potential effect of valproic acid (VPA), used in previous studies, and to investigate the effect of psammaplin A (PsA), a novel HDACi, on the development and quality of cloned mouse embryos. To this aim, cloned embryos were treated with 5, 10, and 20 μM PsA or 2 and 4 mM VPA for 8-9 h (before and during activation) or 16 h or 24 h (during and after activation), and their in vitro developmental potential and blastocyst quality were evaluated. Treatments with 10 μM PsA and 2 mM VPA for 16 h were selected as the most optimal, showing higher blastocyst rates and quality. These treatments had no significant effects on the expression of Nanog, Oct4, and Cdx2 or on global histone and DNA methylation levels at the blastocyst stage, but both increased global levels of histone acetylation at early developmental stages. This was correlated with a two-fold (for VPA) and four-fold (for PsA) increase in full-term development, and a 11.5-fold increase when PsA was combined with the use of latrunculin A instead of cytochalasin B. In conclusion, PsA improves mouse cloning efficiency to a higher extent than VPA.
Collapse
Affiliation(s)
- Anna Mallol
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona , 08193, Bellaterra, Spain
| | | | | |
Collapse
|