1
|
Alarcón H, Bonzon-Kulichenko E, Peinado R, Lim F, Vázquez J, Rodríguez A. Generation of a lentiviral vector system to efficiently express bioactive recombinant human prolactin hormones. Mol Cell Endocrinol 2020; 499:110605. [PMID: 31580897 DOI: 10.1016/j.mce.2019.110605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/26/2019] [Accepted: 09/29/2019] [Indexed: 10/25/2022]
Abstract
The contribution of the pleiotropic hormone Prolactin (PRL) to several physiological and pathological processes is still unknown. To clarify the role of PRL in these processes during the last decade, different human PRL antagonists have been produced to either partially or fully block the wild type hormone activity. In this work, we have cloned these wild type and antagonist sequences in lentivectors (LV) to express them as recombinant self-processing polypeptides by employing a P2A sequence (hPRL-P2A-GFP). We show that these LVs can efficiently transduce and express the hPRL proteins in different cell types and that the P2A sequence does not affect their activities. Additionally, we have tested their activities in paracrine and autocrine cell culture experiments. Our results demonstrate that these recombinant hPRL-P2A proteins are bioactive in both paracrine and autocrine modes, highlighting the potential usefulness of these hPRL-containing LVs for determining the contribution of hPRL to different biological processes.
Collapse
Affiliation(s)
- Hernán Alarcón
- Department of Molecular Biology, Autonomous University of Madrid, Madrid, 28049, Spain
| | - Elena Bonzon-Kulichenko
- Laboratory of Cardiovascular Proteomics, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, 28029, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, 28029, Spain
| | - Rocío Peinado
- Department of Molecular Biology, Autonomous University of Madrid, Madrid, 28049, Spain
| | - Filip Lim
- Department of Molecular Biology, Autonomous University of Madrid, Madrid, 28049, Spain
| | - Jesús Vázquez
- Laboratory of Cardiovascular Proteomics, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, 28029, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, 28029, Spain
| | - Antonio Rodríguez
- Department of Molecular Biology, Autonomous University of Madrid, Madrid, 28049, Spain.
| |
Collapse
|
2
|
Tomioka I, Nogami N, Nakatani T, Owari K, Fujita N, Motohashi H, Takayama O, Takae K, Nagai Y, Seki K. Generation of transgenic marmosets using a tetracyclin-inducible transgene expression system as a neurodegenerative disease model. Biol Reprod 2018; 97:772-780. [PMID: 29045563 DOI: 10.1093/biolre/iox129] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/12/2017] [Indexed: 01/18/2023] Open
Abstract
Controllable transgene expression systems are indispensable tools for the production of animal models of disease to investigate protein functions at defined periods. However, in nonhuman primates that share genetic, physiological, and morphological similarities with humans, genetic modification techniques have not been well established; therefore, the establishment of novel transgenic models with controllable transgene expression systems will be valuable tools to understand pathological mechanism of human disease. In the present study, we successfully generated transgenic marmosets using a tetracyclin-inducible transgene expression (tet-on) system as a neurodegenerative disease model. The mutant human ataxin 3 gene controlled by the tet-on system was introduced into marmoset embryos via lentiviral transduction, and 34 transgene-introduced embryos were transferred into the uteri of surrogate mothers. Seven live offspring (TET1-7) were obtained, of which four were transgenic. Fibroblasts from TET1 and 3 revealed that inducible transgene expression had occurred after treatment with 10 μg/mL of doxycycline, while treatment with doxycycline via drinking water resulted in 1.7- to 1.8-fold inducible transgene expression compared with before treatment. One transgenic second-generation offspring (TET3-3) was obtained from TET3, and doxycycline-inducible transgene expression in its fibroblasts showed that TET3-3 maintained a high transgene expression level that matched its parent. In conclusion, we established a novel transgenic marmoset line carrying the mutant human ataxin 3 gene controlled by the tet-on system. The development of nonhuman primate models with controllable transgene expression systems will be useful for the identification of disease biomarkers and evaluation of the efficacy and metabolic profiles of therapeutic candidates.
Collapse
Affiliation(s)
- Ikuo Tomioka
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.,Institute for Biomedical Science, Shinshu University, Nagano, Japan
| | - Naotake Nogami
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Terumi Nakatani
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Kensuke Owari
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Naoko Fujita
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Hideyuki Motohashi
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Osamu Takayama
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Kentaro Takae
- Institute for Biomedical Science, Shinshu University, Nagano, Japan
| | - Yoshitaka Nagai
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.,Department of Neurotherapeutics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kazuhiko Seki
- Department of Neurophysiology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| |
Collapse
|
3
|
Jin YX, Jeon Y, Lee SH, Kwon MS, Kim T, Cui XS, Hyun SH, Kim NH. Production of pigs expressing a transgene under the control of a tetracycline-inducible system. PLoS One 2014; 9:e86146. [PMID: 24454957 PMCID: PMC3893280 DOI: 10.1371/journal.pone.0086146] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 12/06/2013] [Indexed: 11/21/2022] Open
Abstract
Pigs are anatomically and physiologically closer to humans than other laboratory animals. Transgenic (TG) pigs are widely used as models of human diseases. The aim of this study was to produce pigs expressing a tetracycline (Tet)-inducible transgene. The Tet-on system was first tested in infected donor cells. Porcine fetal fibroblasts were infected with a universal doxycycline-inducible vector containing the target gene enhanced green fluorescent protein (eGFP). At 1 day after treatment with 1 µg/ml doxycycline, the fluorescence intensity of these cells was increased. Somatic cell nuclear transfer (SCNT) was then performed using these donor cells. The Tet-on system was then tested in the generated porcine SCNT-TG embryos. Of 4,951 porcine SCNT-TG embryos generated, 850 were cultured in the presence of 1 µg/ml doxycycline in vitro. All of these embryos expressed eGFP and 15 embryos developed to blastocyst stage. The remaining 4,101 embryos were transferred to thirty three surrogate pigs from which thirty eight cloned TG piglets were obtained. PCR analysis showed that the transgene was inserted into the genome of each of these piglets. Two TG fibroblast cell lines were established from these TG piglets, and these cells were used as donor cells for re-cloning. The re-cloned SCNT embryos expressed the eGFP transgene under the control of doxycycline. These data show that the expression of transgenes in cloned TG pigs can be regulated by the Tet-on/off systems.
Collapse
Affiliation(s)
- Yong-Xun Jin
- Department of Animal Science, Chungbuk National University, Cheongju, Republic of Korea
| | - Yubyeol Jeon
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Sung-Hyun Lee
- Department of Animal Science, Chungbuk National University, Cheongju, Republic of Korea
| | - Mo-Sun Kwon
- School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - Teoan Kim
- School of Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - Xiang-Shun Cui
- Department of Animal Science, Chungbuk National University, Cheongju, Republic of Korea
| | - Sang-Hwan Hyun
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea
- * E-mail: (NHK); (SHH)
| | - Nam-Hyung Kim
- Department of Animal Science, Chungbuk National University, Cheongju, Republic of Korea
- * E-mail: (NHK); (SHH)
| |
Collapse
|
4
|
Xiao P, Zhou XL, Zhang HX, Xiong K, Teng Y, Huang XJ, Cao R, Wang Y, Liu HL. Characterization of the nuclear localization signal of the mouse TET3 protein. Biochem Biophys Res Commun 2013; 439:373-7. [PMID: 23998935 DOI: 10.1016/j.bbrc.2013.08.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 08/23/2013] [Indexed: 11/18/2022]
Abstract
DNA demethylation is associated with gene activation and is mediated by a family of ten-eleven translocation (TET) dioxygenase. The TET3 protein is a 1668-amino-acid DNA demethylase that is predicted to possess five nuclear localization signals (NLSs). In this paper, we used a series of green fluorescent protein-tagged and mutation constructs to identify a conserved NLS (KKRK) embedded between amino acid 1615 and 1618 of mouse TET3. The KKRK sequence facilitates the cytoplasmic protein's translocation into the nucleus. Additionally TET3 may be imported into the nucleus by importin-α and importin-β.
Collapse
Affiliation(s)
- Peng Xiao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|