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Deng K, Liu Z, Su Y, Zhang Z, Fan Y, Zhang Y, Wang F. RUNX1T1 modulates myogenic differentiation by regulating the calcium signaling pathway and the alternative splicing of ROCK2. FASEB J 2023; 37:e23044. [PMID: 37342905 DOI: 10.1096/fj.202300677r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/27/2023] [Accepted: 06/07/2023] [Indexed: 06/23/2023]
Abstract
RUNX1T1 (Runt-related transcription factor 1, translocated to 1) plays a wide-ranging and diverse role in cellular development, including hematopoiesis and adipogenesis. However, little is known about the function of RUNX1T1 in the skeletal muscle development. Here, we assessed the impact of RUNX1T1 on the proliferation and myogenic differentiation of goat primary myoblasts (GPMs). It was observed that RUNX1T1 is highly expressed during the early stages of myogenic differentiation and the fetal stage. Moreover, the knockdown of RUNX1T1 promotes the proliferation and inhibits myogenic differentiation and mitochondrial biogenesis of GPMs. RNA sequencing analysis revealed that significantly differentially expressed genes in RUNX1T1 knockdown cells were enriched in the calcium signaling pathway. Additionally, we discovered that RUNX1T1 regulates alternative splicing (AS) events involved in myogenesis. We also show that silencing RUNX1T1 blocked the Ca2+ -CAMK signaling pathway and reduced the expression levels of muscle-specific isoforms of recombinant rho associated coiled coil containing crotein kinase 2 (ROCK2) during myogenic differentiation, partially explaining why RUNX1T1 deficiency leads to the impairment of myotube formation. These findings suggest that RUNX1T1 is a novel regulator of myogenic differentiation that regulates the calcium signaling pathway and AS of ROCK2. Overall, our results highlight the critical role of RUNX1T1 in myogenesis and broaden our understanding of myogenic differentiation.
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Affiliation(s)
- Kaiping Deng
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing, China
- Institute of Haimen Goat Industry, Nanjing Agricultural University, Nanjing, China
| | - Zhipeng Liu
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing, China
- Institute of Haimen Goat Industry, Nanjing Agricultural University, Nanjing, China
| | - Yalong Su
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing, China
- Institute of Haimen Goat Industry, Nanjing Agricultural University, Nanjing, China
| | - Zhen Zhang
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing, China
- Institute of Haimen Goat Industry, Nanjing Agricultural University, Nanjing, China
| | - Yixuan Fan
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing, China
- Institute of Haimen Goat Industry, Nanjing Agricultural University, Nanjing, China
| | - Yanli Zhang
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing, China
- Institute of Haimen Goat Industry, Nanjing Agricultural University, Nanjing, China
| | - Feng Wang
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing, China
- Institute of Haimen Goat Industry, Nanjing Agricultural University, Nanjing, China
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Use of Genome Editing Techniques to Produce Transgenic Farm Animals. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1354:279-297. [PMID: 34807447 PMCID: PMC9810480 DOI: 10.1007/978-3-030-85686-1_14] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Recombinant proteins are essential for the treatment and diagnosis of clinical human ailments. The availability and biological activity of recombinant proteins is heavily influenced by production platforms. Conventional production platforms such as yeast, bacteria, and mammalian cells have biological and economical challenges. Transgenic livestock species have been explored as an alternative production platform for recombinant proteins, predominantly through milk secretion; the strategy has been demonstrated to produce large quantities of biologically active proteins. The major limitation of utilizing livestock species as bioreactors has been efforts required to alter the genome of livestock. Advancements in the genome editing field have drastically improved the ability to genetically engineer livestock species. Specifically, genome editing tools such as the CRISPR/Cas9 system have lowered efforts required to generate genetically engineered livestock, thus minimizing restrictions on the type of genetic modification in livestock. In this review, we discuss characteristics of transgenic animal bioreactors and how the use of genome editing systems enhances design and availability of the animal models.
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Li S, Wang J, Zhang H, Ma D, Zhao M, Li N, Men Y, Zhang Y, Chu H, Lei C, Shen W, Othman OEM, Zhao Y, Min L. Transcriptome profile of goat folliculogenesis reveals the interaction of oocyte and granulosa cell in correlation with different fertility population. Sci Rep 2021; 11:15698. [PMID: 34344973 PMCID: PMC8333342 DOI: 10.1038/s41598-021-95215-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 07/15/2021] [Indexed: 11/28/2022] Open
Abstract
To understand the molecular and genetic mechanisms related to the litter size in one species of two different populations (high litter size and low litter size), we performed RNA-seq for the oocytes and granulosa cells (GCs) at different developmental stages of follicle, and identified the interaction of genes from both sides of follicle (oocyte and GCs) and the ligand-receptor pairs from these two sides. Our data were very comprehensive to uncover the difference between these two populations regarding the folliculogenesis. First, we identified a set of potential genes in oocyte and GCs as the marker genes which can be used to determine the goat fertility capability and ovarian reserve ability. The data showed that GRHPR, GPR84, CYB5A and ERAL1 were highly expressed in oocyte while JUNB, SCN2A, MEGE8, ZEB2, EGR1and PRRC2A were highly expressed in GCs. We found more functional genes were expressed in oocytes and GCs in high fertility group (HL) than that in low fertility group (LL). We uncovered that ligand-receptor pairs in Notch signaling pathway and transforming growth factor-β (TGF-β) superfamily pathways played important roles in goat folliculogenesis for the different fertility population. Moreover, we discovered that the correlations of the gene expression in oocytes and GCs at different stages in the two populations HL and LL were different, too. All the data reflected the gene expression landscape in oocytes and GCs which was correlated well with the fertility capability.
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Affiliation(s)
- Shen Li
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Junjie Wang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Dongxue Ma
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Minghui Zhao
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Na Li
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Yuhao Men
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Yuan Zhang
- Jining Animal Husbandry Development Center, Jining, People's Republic of China
| | - Huimin Chu
- Jining Agricultural Science Institute, Jining, People's Republic of China
| | - Chuzhao Lei
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, People's Republic of China
| | - Wei Shen
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | | | - Yong Zhao
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China. .,State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
| | - Lingjiang Min
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China.
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Kalds P, Zhou S, Cai B, Liu J, Wang Y, Petersen B, Sonstegard T, Wang X, Chen Y. Sheep and Goat Genome Engineering: From Random Transgenesis to the CRISPR Era. Front Genet 2019; 10:750. [PMID: 31552084 PMCID: PMC6735269 DOI: 10.3389/fgene.2019.00750] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/17/2019] [Indexed: 12/16/2022] Open
Abstract
Sheep and goats are valuable livestock species that have been raised for their production of meat, milk, fiber, and other by-products. Due to their suitable size, short gestation period, and abundant secretion of milk, sheep and goats have become important model animals in agricultural, pharmaceutical, and biomedical research. Genome engineering has been widely applied to sheep and goat research. Pronuclear injection and somatic cell nuclear transfer represent the two primary procedures for the generation of genetically modified sheep and goats. Further assisted tools have emerged to enhance the efficiency of genetic modification and to simplify the generation of genetically modified founders. These tools include sperm-mediated gene transfer, viral vectors, RNA interference, recombinases, transposons, and endonucleases. Of these tools, the four classes of site-specific endonucleases (meganucleases, ZFNs, TALENs, and CRISPRs) have attracted wide attention due to their DNA double-strand break-inducing role, which enable desired DNA modifications based on the stimulation of native cellular DNA repair mechanisms. Currently, CRISPR systems dominate the field of genome editing. Gene-edited sheep and goats, generated using these tools, provide valuable models for investigations on gene functions, improving animal breeding, producing pharmaceuticals in milk, improving animal disease resistance, recapitulating human diseases, and providing hosts for the growth of human organs. In addition, more promising derivative tools of CRISPR systems have emerged such as base editors which enable the induction of single-base alterations without any requirements for homology-directed repair or DNA donor. These precise editors are helpful for revealing desirable phenotypes and correcting genetic diseases controlled by single bases. This review highlights the advances of genome engineering in sheep and goats over the past four decades with particular emphasis on the application of CRISPR/Cas9 systems.
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Affiliation(s)
- Peter Kalds
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
- Department of Animal and Poultry Production, Faculty of Environmental Agricultural Sciences, Arish University, El-Arish, Egypt
| | - Shiwei Zhou
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Bei Cai
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Jiao Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Ying Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Bjoern Petersen
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Neustadt, Germany
| | | | - Xiaolong Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yulin Chen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, China
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Abstract
Alternative splicing (AS) is a fundamental regulatory process in all higher eukaryotes. However, AS landscapes for a number of animals, including goats, have not been explored to date. Here, we sequenced 60 samples representing 5 tissues from 4 developmental stages in triplicate using RNA-seq to elucidate the goat AS landscape. In total, 14,521 genes underwent AS (AS genes), accounting for 85.53% of intron-containing genes (16,697). Among these AS genes, 6,342 were differentially expressed in different tissues. Of the AS events identified, retained introns were most prevalent (37.04% of total AS events). Functional enrichment analysis of differential and specific AS genes indicated goat AS mainly involved in organ function and development. Particularly, AS genes identified in leg muscle were associated with the “regulation of skeletal muscle tissue development” GO term. Given genes were associated with this term, four of which (NRG4, IP6K3, AMPD1, and DYSF) might play crucial roles in skeletal muscle development. Further investigation indicated these five genes, harbored 13 ASs, spliced exclusively in leg muscle, likely played a role in goat leg muscle development. These results provide novel insights into goat AS landscapes and a valuable resource for investigation of goat transcriptome complexity and gene regulation.
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Genome-wide transcriptome analysis in the ovaries of two goats identifies differentially expressed genes related to fecundity. Gene 2016; 582:69-76. [PMID: 26851539 DOI: 10.1016/j.gene.2016.01.047] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 01/06/2016] [Accepted: 01/28/2016] [Indexed: 12/20/2022]
Abstract
The goats are widely kept as livestock throughout the world. Two excellent domestic breeds in China, the Laiwu Black and Jining Grey goats, have different fecundities and prolificacies. Although the goat genome sequences have been resolved recently, little is known about the gene regulations at the transcriptional level in goat. To understand the molecular and genetic mechanisms related to the fecundities and prolificacies, we performed genome-wide sequencing of the mRNAs from two breeds of goat using the next-generation RNA-Seq technology and used functional annotation to identify pathways of interest. Digital gene expression analysis showed 338 genes were up-regulated in the Jining Grey goats and 404 were up-regulated in the Laiwu Black goats. Quantitative real-time PCR verified the reliability of the RNA-Seq data. This study suggests that multiple genes responsible for various biological functions and signaling pathways are differentially expressed in the two different goat breeds, and these genes might be involved in the regulation of goat fecundity and prolificacy. Taken together, our study provides insight into the transcriptional regulation in the ovaries of 2 species of goats that might serve as a key resource for understanding goat fecundity, prolificacy and genetic diversity between species.
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Babaeipour V, Khanchezar S, Mofid MR, Pesaran Hagi Abbas M. Efficient process development of recombinant human granulocyte colony-stimulating factor (rh-GCSF) production in Escherichia coli. IRANIAN BIOMEDICAL JOURNAL 2016; 19:102-10. [PMID: 25864815 PMCID: PMC4412921 DOI: 10.6091/ibj.1338.2015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: The protein hormone granulocyte colony-stimulating factor (GCSF) stimulates the production of white blood cells and plays an important role in medical treatment of cancer patients. Methods: An efficient process was developed for heterologous expression of the human GCSF in E. coli BL21 (DE3). The feeding rate was adjusted to achieve the maximum attainable specific growth rate under critical value. In this method, specific growth rate was maintained at the maximum value of 0.55 h-1 at the beginning of feeding to 0.4 h-1 at the induction time. Recombinant human GCSF (rh-GCSF) was produced as inclusion body. At first, inclusion bodies were released by cell disruption and then washed, solubilized and refolded. Finally, the rh-GCSF was purified by cation exchange chromatography. Results: Obviouly, higher specific growth rate decreases process time and consequently increases productivity. The final concentration of biomass and GCSF was achieved 126 g DCW.l-1 and 32.1 g.l-1. Also, the final specific yield (YP/X) and total productivity of rh-GCSF were obtained 254 mg.g-1 DCW and 1.83 g.l-1.h-1, respectively. According to the available data, this is one of the highest YP/X and productivity that has been reported for any human protein which is expressed in E. coli. Recovery yield of purification process was %40 and purity of recombinant protein was over than 99%. The circular dichroism spectra of purified rh-GCSF, Neupogen® and PD-Grastim showed that all proteins have a similar secondary structure. Conclusion: Modified exponential feeding strategy for fed-batch cultivation of recombinant E. coli, results in minimum fed-batch duration and maximum productivity.
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Affiliation(s)
- Valiollah Babaeipour
- Dept. of Bioscience and Biotechnology, Malek Ashtar University of Technology, P.O. Box 14395-1561, Tehran, Iran
| | - Sirwan Khanchezar
- Dept. of Biotechnology, Chemical Engineering Faculty, Tarbiat Modarres University, Tehran, Iran
| | - Mohammad Reza Mofid
- Dept. of Biochemistry and Bioinformatics Research Center, School of Pharmacy and Pharmaceutical Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahdi Pesaran Hagi Abbas
- Dept. of Life Science Engineering, Faculty of New
Technologies, University of Tehran, Tehran, Iran
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Oviduct-specific expression of human neutrophil defensin 4 in lentivirally generated transgenic chickens. PLoS One 2015; 10:e0127922. [PMID: 26020529 PMCID: PMC4447378 DOI: 10.1371/journal.pone.0127922] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 04/20/2015] [Indexed: 11/19/2022] Open
Abstract
The expression of oviduct-specific recombinant proteins in transgenic chickens is a promising technology for the production of therapeutic biologics in eggs. In this study, we constructed a lentiviral vector encoding an expression cassette for human neutrophil defensin 4 (HNP4), a compound that displays high activity against Escherichia coli, and produced transgenic chickens that expressed the recombinant HNP4 protein in egg whites. After the antimicrobial activity of the recombinant HNP4 protein was tested at the cellular level, a 2.8-kb ovalbumin promoter was used to drive HNP4 expression specifically in oviduct tissues. From 669 injected eggs, 218 chickens were successfully hatched. Ten G0 roosters, with semens identified as positive for the transgene, were mated with wild-type hens to generate G1 chickens. From 1,274 total offspring, fifteen G1 transgenic chickens were positive for the transgene, which was confirmed by PCR and Southern blotting. The results of the Southern blotting and genome walking indicated that a single copy of the HNP4 gene was integrated into chromosomes 1, 2, 3, 4, 6 and 24 of the chickens. As expected, HNP4 expression was restricted to the oviduct tissues, and the levels of both transcriptional and translational HNP4 expression varied greatly in transgenic chickens with different transgene insertion sites. The amount of HNP4 protein expressed in the eggs of G1 and G2 heterozygous transgenic chickens ranged from 1.65 μg/ml to 10.18 μg/ml. These results indicated that the production of transgenic chickens that expressed HNP4 protein in egg whites was successful.
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Wu J, Liao M, Zhu H, Kang K, Mu H, Song W, Niu Z, He X, Bai C, Li G, Li X, Hua J. CD49f-positive testicular cells in Saanen dairy goat were identified as spermatogonia-like cells by miRNA profiling analysis. J Cell Biochem 2015; 115:1712-23. [PMID: 24817091 DOI: 10.1002/jcb.24835] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 04/29/2014] [Accepted: 05/08/2014] [Indexed: 11/07/2022]
Abstract
miRNAs, a type of small RNA, play critical roles in mammalian spermatogenesis. Spermatogonia are the foundation of spermatogenesis and are valuable for the study of spermatogenesis. However, the expression profiling of the miRNAs in spermatogonia of dairy goats remains unclear. CD49f has been one of the surface markers used for spermatogonia enrichment by magnetic activated cell sorting (MACS). Therefore, we used a CD49f microbead antibody to purify CD49f-positive and -negative cells of dairy goat testicular cells by MACS and then analysed the miRNA expression in these cells in depth using Illumina sequencing technology. The results of miRNA expression profiling in purified CD49f-positive and -negative testicular cells showed that 933 miRNAs were upregulated in CD49f-positive cells and 916 miRNAs were upregulated in CD49f-negative cells with a twofold increase, respectively; several miRNAs and marker genes specific for spermatogonial stem cells (SSCs) in testis had a higher expression level in CD49f-positive testicular cells, including miR-221, miR-23a, miR-29b, miR-24, miR-29a, miR-199b, miR-199a, miR-27a, and miR-21 and CD90, Gfra1, and Plzf. The bioinformatics analysis of differently expressed miRNAs indicated that the target genes of these miRNAs in CD49f-positive cells were involved in cell-cycle biological processes and the cell-cycle KEGG pathway. In conclusion, our comparative miRNAome data provide useful miRNA profiling data of dairy goat spermatogonia cells and suggest that CD49f could be used to enrich dairy goat spermatogonia-like cells, including SSCs.
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Affiliation(s)
- Jiang Wu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Key Lab for Animal Biotechnology of Agriculture Ministry of China, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
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10
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Batista RITP, Melo CHS, Souza-Fabjan JMG, Teixeira DIA, Melo LM, Freitas VJF. Phenotypic features of first-generation transgenic goats for human granulocyte-colony stimulation factor production in milk. Biotechnol Lett 2014; 36:2155-62. [PMID: 24975728 DOI: 10.1007/s10529-014-1588-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 06/12/2014] [Indexed: 12/20/2022]
Abstract
Human granulocyte-colony stimulating factor (hG-CSF) is a hematopoietic growth factor used in neutropenic patients. It is produced in transgenic bacteria or cultured mammalian cells. As an alternative, we now show that hG-CSF can be expressed in the mammary gland of first-generation (F1) transgenic goats during induced lactation. Despite lower milk production, transgenic females presented a similar milk composition (fat, protein and lactose) when compared to non-transgenic (p > 0.05) ones. The mean concentration (±SD) of recombinant hG-CSF in milk during lactation was 360 ± 178 µg ml(-1). All clinical parameters, as well as kidney and liver function, indicated that F1 transgenic goats were healthy. Additionally, no ectopic hG-CSF expression was detected in studied tissues of F1 transgenic males. Thus, F1 hG-CSF-transgenic goats can express the recombinant protein in milk at quantities compatible with their use as bioreactors in a commercial-scale protein-production program.
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Affiliation(s)
- Ribrio I T P Batista
- Laboratory of Physiology and Control of Reproduction, Faculty of Veterinary, State University of Ceará, Av. Dr. Silas Munguba, 1700, Fortaleza, CE, 60714-903, Brazil
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11
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Tang YX, Liu F, Tang HX, Yang SK, Zhang XY. The complete mitochondrial genome of Yunnan black goat (Capra hircus). ACTA ACUST UNITED AC 2014; 27:224-5. [DOI: 10.3109/19401736.2014.880900] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Freitas VJF, Serova IA, Andreeva LE, Melo LM, Teixeira DIA, Pereira AF, Moura RR, Lopes-Jr ES, Souza-Fabjan JMG, Batista RITP, Serov OL. The comparison of two embryo donor breeds for the generation of transgenic goats by DNA pronuclear microinjection. ANIMAL PRODUCTION SCIENCE 2014. [DOI: 10.1071/an13069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of the present study was to compare two breeds as embryo donors to produce transgenic goats for the production of human granulocyte colony-stimulating factor. Ten Canindé and 11 Saanen goats were used as donors and received a hormonal treatment for oestrus synchronisation. The superovulation was induced with a total administration of 4.4 mg/kg bodyweight NIH-FSH-P1, given in decreasing doses over 3 days. Donors also received 100 μg of GnRH and they were hand-mated at 36 and 48 h after progestagen removal. Embryo recovery was performed by oviduct flushing at 72 h after progestagen removal and the pronuclear embryos were microinjected. Fifty-two recipients of undefined breed were prepared by receiving the same oestrus synchronisation treatment; however, only 32 were used due to the availability of embryos. Embryos were surgically transferred into the oviduct. A significant (P < 0.05) difference was observed in the total number of ovulations when Canindé (12.6 ± 6.9) and Saanen (22.5 ± 10.0) donors were compared. Concerning the microinjectable embryos, Canindé goats produced a greater number when compared with Saanen females (P < 0.05). Twenty recipients received 61 Canindé embryos and, of those, 12 kidded, whereas just 12 recipients received 30 Saanen embryos but just three kidded. In total, three transgenic goats were obtained, of which two were healthy Canindé and one stillborn Saanen. It was possible to develop an efficient protocol to obtain transgenic goats for Canindé but not for Saanen breed, for which some variables such as superovulatory regime and time of breeding should be further studied.
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13
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Wu J, Song W, Zhu H, Niu Z, Mu H, Lei A, Yang C, Peng S, Li X, Li G, Hua J. Enrichment and characterization of Thy1-positive male germline stem cells (mGSCs) from dairy goat (Capra hircus) testis using magnetic microbeads. Theriogenology 2013; 80:1052-60. [DOI: 10.1016/j.theriogenology.2013.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Revised: 07/31/2013] [Accepted: 08/01/2013] [Indexed: 12/16/2022]
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14
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Khodarovich YM, Goldman IL, Sadchikova ER, Georgiev PG. Expression of eukaryotic recombinant proteins and deriving them from the milk of transgenic animals. APPL BIOCHEM MICRO+ 2013. [DOI: 10.1134/s0003683813090020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Wu J, Zhu H, Song W, Li M, Liu C, Li N, Tang F, Mu H, Liao M, Li X, Guan W, Li X, Hua J. Identification of Conservative MicroRNAs in Saanen Dairy Goat Testis Through Deep Sequencing. Reprod Domest Anim 2013; 49:32-40. [DOI: 10.1111/rda.12217] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 06/20/2013] [Indexed: 01/28/2023]
Affiliation(s)
- J Wu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - H Zhu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - W Song
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - M Li
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - C Liu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - N Li
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - F Tang
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - H Mu
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - M Liao
- College of Life Science Northwest A & F University Yangling China
| | - X Li
- Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing China
| | - W Guan
- Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing China
| | - X Li
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
| | - J Hua
- College of Veterinary Medicine Shaanxi Centre of Stem Cells Engineering & Technology Key Lab for Animal Biotechnology of Agriculture Ministry of China Northwest A & F University Yangling China
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Moura RR, Albuquerque ES, Melo CHS, Alcântara-Neto AS, Batista RITP, Nunes-Pinheiro DCS, Pereira AF, Teixeira DÍA, Melo LM, Serova IA, Andreeva LE, Serov OL, Freitas VJF. Dynamics of recombinant hG-CSF in transgenic goat: preliminary study in the founder during hormonally induced lactation. Anim Biotechnol 2013; 24:10-4. [PMID: 23394365 DOI: 10.1080/10495398.2012.729000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This study aimed to characterize the dynamic of human granulocyte colony-stimulating factor (hG-CSF) during artificial lactation in a transgenic founder goat and to assess its potential ectopic expression and health. The female secreted 93.9 to 1,474.6 µg hG-CSF per mL of milk. Two peaks of serum hG-CSF (3,470 and 7,390 pg/mL) were detected in the first half of the lactation. Outside of the lactation, hG-CSF was absent from serum, indicating no ectopic expression. During the treatment to induce lactation, transgenic female presented increased neutrophil and lymphocyte blood counts when compared to nontransgenic female. Despite transient neutrophilia, serum biochemistry profiles indicated normal liver and renal functions. Thus, transgenic goat expressed hG-CSF in quantities sufficient for a commercial bioreactor and remained clinically healthy.
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Affiliation(s)
- Raylene R Moura
- State University of Ceará, Faculty of Veterinary, Fortaleza, Brazil
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17
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Sequencing and automated whole-genome optical mapping of the genome of a domestic goat (Capra hircus). Nat Biotechnol 2012; 31:135-41. [DOI: 10.1038/nbt.2478] [Citation(s) in RCA: 369] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 12/06/2012] [Indexed: 11/09/2022]
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18
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Freitas V, Serova I, Moura R, Andreeva L, Melo L, Teixeira D, Pereira A, Lopes-Jr E, Dias L, Nunes-Pinheiro D, Sousa F, Alcântara-Neto A, Albuquerque E, Melo C, Rodrigues V, Batista R, Dvoryanchikov G, Serov O. The establishment of two transgenic goat lines for mammary gland hG-CSF expression. Small Rumin Res 2012. [DOI: 10.1016/j.smallrumres.2012.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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19
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Boulanger L, Passet B, Pailhoux E, Vilotte JL. Transgenesis applied to goat: current applications and ongoing research. Transgenic Res 2012; 21:1183-90. [DOI: 10.1007/s11248-012-9618-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Accepted: 04/09/2012] [Indexed: 10/28/2022]
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20
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A 3,387 bp 5'-flanking sequence of the goat alpha-S1-casein gene provides correct tissue-specific expression of human granulocyte colony-stimulating factor (hG-CSF) in the mammary gland of transgenic mice. Transgenic Res 2011; 21:485-98. [PMID: 21881921 DOI: 10.1007/s11248-011-9547-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 08/16/2011] [Indexed: 10/17/2022]
Abstract
A new expression vector containing the 1,944 bp 5'-flanking regulatory region together with exon 1 and intron 1 of the goat alpha-S1-casein gene (CSN1S1), the full-sized human granulocyte colony-stimulating factor gene (hGCSF) and the 3'-flanking sequence of the bovine CSN1S1, was created. The vector DNA was used for generation of four mouse transgenic lines. The transgene was integrated into chromosomes 8 and 12 of two founders as 2 and 5 copies, respectively. Tissue-specific secretion of hG-CSF into the milk of transgenic mice was in the range of 19-40 μg/ml. RT-PCR analysis of various tissues of the transgenic mice demonstrated that expression of hGCSF was detected in only the mammary gland in the progeny of all founders. Moreover, cells were shown to be positive for hG-CSF by immunofluorescent analysis in the mammary glands but not in any other tissues. There were no signs of mosaic expression in the mammary gland. Trace amounts of hG-CSF were detected in the serum of females of two transgenic lines during lactation only. However, no transgenic mice showed any changes in hematopoiesis based on the number of granulocytes in blood. Immunoblotting of hG-CSF in the milk of transgenic mice revealed two forms, presumably the glycosylated and non-glycosylated forms. The hematopoietic activity of hG-CSF in the milk of transgenic females is comparable to that of recombinant G-CSF. In general, the data obtained in this study show that the new expression vector is able to provide correct tissue-specific expression of hG-CSF with high biological activity in transgenic mice.
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21
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Gama L, Bressan M. Biotechnology applications for the sustainable management of goat genetic resources. Small Rumin Res 2011. [DOI: 10.1016/j.smallrumres.2011.03.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Shin ST, Jang SK, Yang HS, Lee OK, Shim YH, Choi WI, Lee DS, Lee GS, Cho JK, Lee YW. Laparoscopy vs. laparotomy for embryo transfer to produce transgenic goats (Capra hircus). J Vet Sci 2008; 9:103-7. [PMID: 18296894 PMCID: PMC2839104 DOI: 10.4142/jvs.2008.9.1.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
This study was performed to produce transgenic Korean native goat (Capra hircus) by laparoscopic embryo transfer (ET) to overcome the limitations of ET performed by laparotomy. Transgenic embryos were produced by DNA pronuclear microinjection of in vivo zygotes. The recipient goats were synchronized for estrus by using an introvaginal progesterone devices as a controlled internal drug-releasing insert (CIDR) for 13 days and injection of 400 IU PMSG 48 h before removal of the insert. Embryos were transferred on day 3 and 4 after removal of the insert. Recipient goats were deprived of feed for 48 h, then suspended in a laparotomy cradle at an angle of 45°. After obtaining a sufficient pneumoperitoneum, the laparoscope and forceps were inserted abdominally through 5 mm trocar sleeves. Examination of the ovaries and uterus was performed and then 213 embryos were transferred into the oviducts via the infundibula of 76 recipient goats. To compare pregnancy rates, ET was also performed by laparotomy in 82 recipient goats. The pregnancies in the recipient goats were diagnosed by ultrasound on day 30 after embryo transfer. The pregnancy rate with laparoscopic ET was significantly higher than with ET performed by laparotomy (46.1% vs. 28.6%, p < 0.05). In addition, the pregnancy rates were compared between ovulated and non-ovulated ovaries of the recipient goats in the laparoscopic ET group. No significant difference was observed between the pregnancy rates of ovulated and non-ovulated ovaries (41.3% vs. 33.3%, p < 0.05) suggesting that ET may also be possible in non-ovulated recipients through artificial rupture of Graafian follicles. These results suggest that laparoscopic ET is a highly efficient method for the transfer of goat embryos.
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Affiliation(s)
- Sang Tae Shin
- College of Veterinary Medicine, Chungnam National University, Daejeon 305-764, Korea.
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23
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Kwon MS, Koo BC, Choi BR, Park YY, Lee YM, Suh HS, Park YS, Lee HT, Kim JH, Roh JY, Kim NH, Kim T. Generation of transgenic chickens that produce bioactive human granulocyte-colony stimulating factor. Mol Reprod Dev 2008; 75:1120-6. [DOI: 10.1002/mrd.20860] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Freitas VJF, Serova IA, Andreeva LE, Dvoryanchikov GA, Lopes ES, Teixeira DIA, Dias LPB, Avelar SRG, Moura RR, Melo LM, Pereira AF, Cajazeiras JB, Andrade MLL, Almeida KC, Sousa FC, Carvalho ACC, Serov OL. Production of transgenic goat (Capra hircus) with human Granulocyte Colony Stimulating Factor (hG-CSF) gene in Brazil. AN ACAD BRAS CIENC 2007; 79:585-92. [PMID: 18066430 DOI: 10.1590/s0001-37652007000400003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2006] [Accepted: 09/25/2007] [Indexed: 02/08/2023] Open
Abstract
In order to produce transgenic goats with hG-CSF, a total of 24 adult Saanen and 48 adult undefined breed goats were used as donors and recipients, respectively. Donors were estrus-synchronized with vaginal sponges and superovulated by a treatment with 200 mg FSH given twice daily in decreasing doses over 3 days starting 48 h before sponge removal. Ovulation was induced by injecting 100 microg GnRH 36 h after sponge removal. The recipients also received an estrus synchronization treatment. Donors were mated with fertile Saanen bucks and, approximately 72 h after sponge removal, zygotes were recovered surgically by flushing oviducts. The recovered zygotes were briefly centrifuged to a reliable visualization of the pronuclei. The DNA construct containing hG-CSF gene flanked by goat and bovine alphas1-casein sequences was injected into pronuclei of 129 zygotes. The microinjected embryos (3-6 per female) were transferred to 27 recipients. Ten recipients became pregnant and 12 kids were born. One transgenic male founder was identified in the group of kids. This is the first report of a birth of a transgenic goat in Latin America.
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Affiliation(s)
- Vicente J F Freitas
- Laboratório de Fisiologia e Controle da Reprodução, Universidade Estadual do Ceará, Fortaleza, CE, Brazil.
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25
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Baldassarre H, Hockley DK, Doré M, Brochu E, Hakier B, Zhao X, Bordignon V. Lactation performance of transgenic goats expressing recombinant human butyryl-cholinesterase in the milk. Transgenic Res 2007; 17:73-84. [PMID: 17851771 DOI: 10.1007/s11248-007-9137-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Accepted: 08/16/2007] [Indexed: 11/25/2022]
Abstract
The production of recombinant proteins in the milk of transgenic animals has attracted significant interest in the last decade, as a valuable alternative for the production of recombinant proteins that cannot be or are inefficiently produced using conventional systems based on microorganisms or animal cells. Several recombinant proteins of pharmaceutical and biomedical interest have been successfully expressed in high quantities (g/l) in the milk of transgenic animals. However, this productivity may be associated with a compromised mammary physiology resulting, among other things, from the extraordinary demand placed on the mammary secretory cells. In this study we evaluated the lactation performance of a herd of 50 transgenic goats expressing recombinant human butyryl-cholinesterase (rBChE) in the milk. Our findings indicate that high expression levels of rBChE (range 1-5 g/l) are produced in these animals at the expense of an impaired lactation performance. The key features characterizing these transgenic performances were the decreased milk production, the reduced milk fat content which was associated with an apparent disruption in the lipid secretory mechanism at the mammary epithelium level, and a highly increased presence of leukocytes in milk which is not associated with mammary infection. Despite of having a compromised lactation performance, the amount of rBChE produced per transgenic goat represents several orders of magnitude more than the amount of rBChE present in the blood of hundreds of human donors, the only other available source of rBChE for pharmaceutical and biodefense applications. As a result, this development constitutes another successful example in the application of transgenic animal technology.
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26
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Yang X, Carter MG. Transgenic animal bioreactors: a new line of defense against chemical weapons? Proc Natl Acad Sci U S A 2007; 104:13859-60. [PMID: 17715298 PMCID: PMC1955779 DOI: 10.1073/pnas.0706163104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Xiangzhong Yang
- Center for Regenerative Biology and Department of Animal Science, University of Connecticut, 1392 Storrs Road, Storrs, CT 06269-4243, USA.
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27
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Fee CJ, Chand A. Design Considerations for the Batch Capture of Proteins from Raw Whole Milk by Ion Exchange Chromatography. Chem Eng Technol 2005. [DOI: 10.1002/ceat.200500124] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Dvoryanchikov GA, Serova IA, Andreeva LE, Dias LPB, Azevedo S, Serov OL. Secretion of Biologically Active Human Granulocyte Colony-Stimulating Factor (G-CSF) in Milk of Transgenic Mice. RUSS J GENET+ 2005. [DOI: 10.1007/s11177-005-0204-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Mikus T, Poplstein M, Sedláková J, Landa V, Jeníkova G, Trefil P, Lidický J, Malý P. Generation and phenotypic analysis of a transgenic line of rabbits secreting active recombinant human erythropoietin in the milk. Transgenic Res 2005; 13:487-98. [PMID: 15587272 DOI: 10.1007/s11248-004-9596-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Production of recombinant human erythropoietin (rhEPO) for therapeutic purposes relies on its expression in selected clones of transfected mammalian cells. Alternatively, this glycoprotein can be produced by targeted secretion into the body fluid of transgenic mammals. Here, we report on the generation of a transgenic rabbits producing rhEPO in the lactating mammary gland. Transgenic individuals are viable, fertile and transmit the rhEPO gene to the offspring. Northern blot data indicated that the expression of the transgene in the mammary gland is controlled by whey acidic protien (WAP) regulatory sequences during the period of lactation. While the hybridization with total RNA revealed the expression only in the lactating mammary gland, the highly sensitive combinatory approach using RT-PCR/hybridization technique detected a minor ectopic expression. The level of rhEPO secretion in the founder female, measured in the period of lactation, varied in the range of 60-178 and 60-162 mIU/ml in the milk and blood plasma, respectively. Biological activity of the milk rhEPO was confirmed by a standard [3H]-thymidine incorporation test. Thus, we describe the model of a rhEPO-transgenic rabbit, valuable for studies of rhEPO glycosylation and function, which can be useful for the development of transgenic approaches designed for the preparation of recombinant proteins by alternative biopharmaceutical production.
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Affiliation(s)
- Tomás Mikus
- BIOPHARM Research Institute of Biopharmacy and Veterinary Drugs, a.s., Center for Molecular and Gene Biotechnology, Pohori-Chotoun, 254 49 Jílové u Prahy, Czech Republic
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30
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Parker MH, Birck-Wilson E, Allard G, Masiello N, Day M, Murphy KP, Paragas V, Silver S, Moody MD. Purification and characterization of a recombinant version of human α-fetoprotein expressed in the milk of transgenic goats. Protein Expr Purif 2004; 38:177-83. [PMID: 15555933 DOI: 10.1016/j.pep.2004.07.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2004] [Revised: 07/07/2004] [Indexed: 10/26/2022]
Abstract
Alpha-Fetoprotein (AFP) is a 68 kDa glycoprotein expressed at high levels by the fetal liver and yolk with transcription repressed to very low levels after birth. Transfer of fetal AFP through the placenta into the circulation of the mother is correlated with remission of rheumatoid arthritis, multiple sclerosis, and other autoimmune disorders. AFP is therefore under development as a biopharmaceutical for the treatment of autoimmune diseases. The clinical evaluation of AFP requires the production of hundreds of grams of highly purified and biologically active protein. We have produced goats that express a form of the human AFP transgene under the control of the beta-casein promoter. In this form of rhAFP, the single N-linked glycosylation site was removed by mutagenesis (N233Q). Here, we describe a purification protocol for this recombinant human (rh)AFP from the milk of these transgenic goats. A three-column procedure was developed to produce gram quantities of highly purified rhAFP. Near- and far-UV circular dichroism spectra of human umbilical cord blood AFP and rhAFP were essentially identical, suggesting that the structure is not affected by removal of the glycosylation site. Furthermore, the cell binding and pharmacokinetics of purified rhAFP were similar to human AFP isolated from cord blood. Our results demonstrate that an active form of rhAFP can be produced on industrial scale by expression in transgenic goat milk.
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Affiliation(s)
- Matthew H Parker
- Merrimack Pharmaceuticals, Inc., 101 Binney St., Cambridge, MA 02142, USA
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31
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Sohn BH, Chang HG, Kang HS, Yoon H, Bae YS, Lee KK, Kim SJ. High level expression of the bioactive human interleukin-10 in milk of transgenic mice. J Biotechnol 2003; 103:11-9. [PMID: 12770500 DOI: 10.1016/s0168-1656(03)00072-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Human interleukin-10 (hIL-10) has wide spectrum of anti-inflammatory activities and has shown a potential to be used for treatment of inflammatory or immune illness. In this study, transgenic mice that over-express human interleukin-10 (IL-10) in their milk were generated using a bovine beta-casein/human IL-10 hybrid gene. After cloning of the IL-10 gene, a 22 kb hybrid gene was constructed by linking a 10 kb promoter sequence of the bovine beta-casein gene to the cloned 12 kb IL-10 gene. In six of the eight transgenic mice, the transgene RNA was expressed only in the mammary gland and in the other two mice, it was also slightly expressed in the lung. The highest human IL-10 level in milk was 1620 microg x ml(-1). Notably, transgenes in all the eight transgenic mice were expressed regardless of the integration site even though no correlation was shown between the copy numbers of the transgene and expression level. These results suggest that the genomic sequence of the human IL-10 gene can induce the IL-10 expression at high levels under the control of the bovine beta-casein promoter.
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Affiliation(s)
- Bo Hwa Sohn
- Department of Biological Sciences, Ewha Womans University, Seoul 120-750, South Korea
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32
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Lui VCH, Tam PKH, Leung MYK, Lau JYB, Chan JKY, Chan VSF, Dallman M, Cheah KSE. Mammary gland-specific secretion of biologically active immunosuppressive agent cytotoxic-T-lymphocyte antigen 4 human immunoglobulin fusion protein (CTLA4Ig) in milk by transgenesis. J Immunol Methods 2003; 277:171-83. [PMID: 12799049 DOI: 10.1016/s0022-1759(03)00071-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A major challenge in the field of transplantation is to prevent graft rejection and prolong graft survival. Tolerance induction is a promising way to achieve long-term graft survival without the need for potent immunosuppression and its associated side effects. The recent success of co-stimulatory blockade by the chimeric protein CTLA4Ig in the modulation of the recipient's immune system and the prolongation of graft survival in animal models suggests a possible application of CTLA4Ig in clinical transplantation. To produce sufficient amounts of CTLA4Ig for future clinical application, we sought to use the mammary gland as a bioreactor and produce CTLA4Ig in the milk of transgenic farm animals. Prior to the generation of transgenic farm animals, we tested our strategy in mice. Using the promoter of the sheep beta-lactoglobulin gene, we expressed our CTLA4Ig chimeric gene in the mammary gland of transgenic mice. The yield of CTLA4Ig was fivefold higher in transgenic milk than that from transfected cells. Purified milk-derived CTLA4Ig is biologically active and suppresses T cell activation. We showed that the production of CTLA4Ig in the milk has no adverse immunosuppression effect on the transgenic animals and the offsprings that were fed with the transgenic milk. The findings suggest that the approach to produce CTLA4Ig in milk by transgenesis is feasible; further studies involving farm animals are warranted.
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Affiliation(s)
- Vincent C H Lui
- Division of Paediatric Surgery, Department of Surgery, The University of Hong Kong Medical Centre, Queen Mary Hospital, SAR, Hong Kong, China
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