Abstract:
:The glyoxylate cycle, catalysed by two unique enzymes: isocitrate lyase (ICL; EC 4.1.3.1) and malate synthase (MS; EC 4.1.3.2), is necessary for the net conversion of acetate into glucose. This metabolic pathway operates in microorganisms, higher plants and nematodes. Two bacterial genes, encoding ICL and MS, were modified in order to introduce them into the mouse germ line. The ovine metallothionein-Ia (MT-Ia) promoter-ace B gene-ovine growth hormone (GH) gene (3' GH sequence) construct was fused to the ovine, MT-Ia promoter-ace A gene-ovine GH gene (3' GH sequence). Therefore, in this single DNA sequence, both ace A and ace B are under independent MT-Ia promoter control and can be induced by zinc. Transgenic mice were generated by pronuclear microinjection of the ace B-ace A gene construct. We now report the establishment of four mouse lines carying these two transgenes. Studies on the progeny of these lines indicate that one line (No. 91) is expressing both genes at the mRNA and enzyme levels in the liver and intestine, whereas another line (No. 66) has a much lower expression. Both enzyme activities were detected in the liver and intestine at levels up to 25% of those measured in fully derepressed Escherichia coli cells.
journal_name
Transgenic Resjournal_title
Transgenic researchauthors
Saini KS,Byrne CR,Leish Z,Pruss CA,Rigby NW,Brownlee AG,Nancarrow CD,Ward KAdoi
10.1007/BF01980212subject
Has Abstractpub_date
1996-11-01 00:00:00pages
467-73issue
6eissn
0962-8819issn
1573-9368journal_volume
5pub_type
杂志文章abstract::The MADS-box genes have been studied mainly in flower development by researching flower homeotic mutants. Most of the MADS-box genes isolated from plants are expressed exclusively in floral tissues, and some of their transcripts have been found in various vegetative tissues. The genes in the STMADS subfamily are impor...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-010-9420-7
更新日期:2011-04-01 00:00:00
abstract::Stable transgenic germlines carrying the red fluorescence protein (RFP) gene (rfp) driven by fast skeletal myosin light chain-2 gene (mlc2f) promoter were established in a truly euryhaline fish species, the marine medaka (Oryzias dancena; Beloniformes). Transgenic lines contained transgene copy numbers varying from a ...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-012-9675-2
更新日期:2013-08-01 00:00:00
abstract::The mouse artificial chromosome (MAC) has several advantages as a gene delivery vector, including stable episomal maintenance of the exogenous genetic material and the ability to carry large and/or multiple gene inserts including their regulatory elements. Previously, a MAC containing multi-integration site (MI-MAC) w...
journal_title:Transgenic research
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doi:10.1007/s11248-015-9884-6
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journal_title:Transgenic research
pub_type: 杂志文章,评审
doi:10.1023/a:1024267416522
更新日期:2003-08-01 00:00:00
abstract::Conventional screening protocols for transgene integration in mice employ tail tips or blood samples as sources to obtain genomic DNA preparations. We have developed a simple alternative non-surgical method. Epithelial cells are scraped off the inner surface of the rectum with a sterile plastic inoculation loop and ar...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1023/a:1008824509988
更新日期:1998-03-01 00:00:00
abstract::Two commonly used promoters to ubiquitously express transgenes in zebrafish are the Xenopus laevis elongation factor 1 alpha promoter (XlEef1a1) and the zebrafish histone variant H2A.F/Z (h2afv) promoter. Recently, transgenes utilizing these promoters were shown to be silenced in certain adult tissues, particularly th...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-007-9152-5
更新日期:2008-04-01 00:00:00
abstract::Tritrophic interactions between transgenic potato expressing the insecticidal lectin from snowdrop (Galanthus nivalis agglutinin; GNA), an aphid pest, Myzus persicae (Sulz.), and a beneficial predator, the 2-spot ladybird (Adalia bipunctata L.) were investigated. Clonal plants expressing GNA at 0.1-0.2% total soluble ...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1023/a:1022904805028
更新日期:2003-04-01 00:00:00
abstract::The generation is reported of transgenic mice expressing human granulocyte-macrophage colony-stimulating factor (GM-CSF) or human erythropoietin (EPO) under the control of bovine alpha s1-casein regulatory sequences. GM-CSF expression was specific to the mammary gland, and levels of human GM-CSF in transgenic mouse mi...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1023/a:1018461201385
更新日期:1997-01-01 00:00:00
abstract::A set of plasmids has been constructed utilizing the promoter, 5' untranslated exon, and first intron of the maize ubiquitin (Ubi-1) gene to drive expression of protein coding sequences of choice. Plasmids containing chimaeric genes for ubiquitin-luciferase (Ubi-Luc), ubiquitin-beta-glucuronidase (Ubi-GUS), and ubiqui...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/BF01969712
更新日期:1996-05-01 00:00:00
abstract::The cDNA for bovine spleen trypsin inhibitor (SI), a homologue of bovine pancreatic trypsin inhibitor (BPTI), including the natural mammalian presequence was expressed in tobacco using Agrobacterium tumefaciens-mediated transformation. Stable expression required the N-terminal targeting signal presequence although sub...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1023/a:1015210919077
更新日期:2002-04-01 00:00:00
abstract::The definition of a disease is fundamentally difficult, even if one considers only genetically based diseases. In its broadest sense, disease can be defined as any deviation from the norm that results in a physiological disadvantage. Natural selection ensures that the norm for any given species is constantly changing....
journal_title:Transgenic research
pub_type: 杂志文章,评审
doi:10.1023/a:1021130127700
更新日期:2002-12-01 00:00:00
abstract::Recently, site-specific recombination methods in plants have been developed to delete selection markers to produce marker-free transgenic plants or to integrate the transgene into a pre-determined genomic location to produce site-specific transgenic plants. However, these methods have been developed independently, and...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-007-9106-y
更新日期:2008-06-01 00:00:00
abstract::Wheat and barley are the major temperate cereals, being used for food, feed and industrial raw material. However, in all cases the quality may be limited by the amount, composition and properties of the grain storage proteins. We describe how a combination of biochemical and molecular studies has led to an understandi...
journal_title:Transgenic research
pub_type: 杂志文章,评审
doi:10.1007/BF01976021
更新日期:1994-01-01 00:00:00
abstract::The disease model of familial amyloidotic polyneuropathy-7.2-hMet30 mice-manifests amyloid deposition that consists of a human amyloidogenic mutant transthyretin (TTR) (TTR V30M). Our previous study found amyloid deposits in 14 of 27 7.2-hMet30 mice at 21-24 months of age. In addition, non-fibrillar TTR deposits were ...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-017-0054-x
更新日期:2018-02-01 00:00:00
abstract::Gonadal effects of the Denys-Drash syndrome (DDS) mutation Wt1(tmT396 )were examined in chimaeric and heterozygous mice. Since the only heterozygote was 41,XXY, Sertoli cell function was assessed by comparison with age-matched control XXY testes. Control XXY Sertoli cells showed immuno-expression of WT1 and androgen r...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-005-7216-y
更新日期:2005-10-01 00:00:00
abstract::The beta-glucuronidase (GUS) gene is to date the most frequently used reporter gene in plants. Marketing of crops containing this gene requires prior evaluation of their biosafety. To aid such evaluations of the GUS gene, irrespective of the plant into which the gene has been introduced, the ecological and toxicologic...
journal_title:Transgenic research
pub_type: 杂志文章,评审
doi:10.1023/a:1008832711805
更新日期:1998-05-01 00:00:00
abstract::The bacterial gene chloramphenicol acetyltransferase (CAT) is a widely used reporter in both in-vitro and in-vivo studies of genetic regulation. We have recently generated novel rat transgenic lines carrying an arylalkylamine N-acetyltransferase (AA-NAT) promoter-reporter construct in which CAT (with associated SV40 s...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1023/a:1008928121846
更新日期:2000-02-01 00:00:00
abstract::Seed dormancy is an important agronomic trait: low levels can cause premature germination, while too much can inhibit uniform germination. As an approach to controlling the seed dormancy level in crops, we used Triticeae DOG1-like genes as transgenes. DOG1 is an Arabidopsis gene that underlies natural variation in see...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-014-9800-5
更新日期:2014-08-01 00:00:00
abstract::Transgenic mice carrying the 3-hydroxy-3-methylglutarylCoA reductase (HMG) promoter driving the Escherichia coli beta-galactosidase (lacZ) gene did not display the expected ubiquitous and constitutive expression in HMG-lacZ transgenic mice. The same promoter is however able to drive ubiquitous expression of the chlora...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/BF01976173
更新日期:1993-11-01 00:00:00
abstract::We generated a transgenic (Tg) mouse line expressing Cre recombinase under the control of the Gpr88 promoter within a bacterial artificial chromosome clone. We crossed the established Tg mice with reporter mice (CAG-CAT-Z Tg), which express Escherichia coli lacZ in response to Cre-mediated excision of the loxP-flanked...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-013-9711-x
更新日期:2013-12-01 00:00:00
abstract::Wheat provides 20 % of the calories consumed worldwide. Powdery mildew infections of wheat can result in more than 30 % yield loss but it has been demonstrated that wheat overexpressing Pm3b, an allele of the R gene Pm3, has enhanced resistance against powdery mildew under field conditions. A gene expression profile s...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-014-9821-0
更新日期:2015-02-01 00:00:00
abstract::Transgenic mouse models mediating conditional temporal and spatial regulation of gene expression to the respiratory epithelium were developed utilizing the reverse tetracycline transactivator (rtTA) expressed under the control of SP-C and CCSP promoters. Luciferase activity was detected in the lungs of fetal and adult...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1023/a:1013986627504
更新日期:2002-02-01 00:00:00
abstract::Based on the Cre/loxP system, we have developed a novel marker-free system mediating a direct auto-excision of loxP-flanked marker genes from T(1 )transgenic rice without any treatment or further offspring crossing. To achieve this, the floral-specific promoter OsMADS45 was isolated from rice and the expression patter...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-008-9182-7
更新日期:2008-12-01 00:00:00
abstract::Multiple infections of Sweet potato feathery mottle virus (SPFMV), Sweet potato chlorotic stunt virus (SPCSV), Sweet potato virus G (SPVG) and Sweet potato mild mottle virus (SPMMV) cause a devastating synergistic disease complex of sweet potato (Ipomoea batatas Lam.) in KwaZulu-Natal, South Africa. In order to addres...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-013-9759-7
更新日期:2014-04-01 00:00:00
abstract::In the fowl the primordial germ cells accumulate in the germinal crescent to the anterior of the two-day embryo. A simple ballistic device has been used to fire tungsten particles (mean diameter 1.5 microns) into this region. By coating these projectiles with vector DNA it is possible to transfect these cells. Hatchli...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/BF01976498
更新日期:1995-01-01 00:00:00
abstract::The seed-based production of recombinant proteins is an efficient strategy to achieve the accumulation, correct folding, and increased stability of these recombinant proteins. Among potential plant molecular farming systems, soybean [Glycine max (L.) Merrill] is a viable option for the production of recombinant protei...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-010-9461-y
更新日期:2011-08-01 00:00:00
abstract::Temporal control of site-specific recombination is commonly achieved by using a tamoxifen-inducible form of Cre or Flp recombinases. Although powerful protocols of induction have been developed for gene inactivation at adult stages or during embryonic development, induction of recombination at late gestational or earl...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-015-9905-5
更新日期:2015-12-01 00:00:00
abstract::While genetically modified upland cotton (Gossypium hirsutum L.) varieties are ranked among the most successful genetically modified organisms (GMO), there is little knowledge on transgene integration in the cotton genome, partly because of the difficulty in obtaining large numbers of transgenic plants. In this study,...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-007-9101-3
更新日期:2008-04-01 00:00:00
abstract::The development of animal biotechnology has led to an increase in attention to biosafety issues. Here we evaluated the impact of genetically engineered cows on the environment. The probability of horizontal gene transfer and the impact on the microbial communities in cow gut and soil were tested using three varieties ...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-010-9477-3
更新日期:2011-10-01 00:00:00
abstract::Agroinfiltration was used to express transiently cre recombinase from bacteriophage P1 in planta. Activation of gfp expression after cre-mediated excision of a bar intervening sequence served as a marker to monitor site-specific recombination events in lox-target N. benthamiana plants. Gfp expressing regenerants from ...
journal_title:Transgenic research
pub_type: 杂志文章
doi:10.1007/s11248-005-8293-7
更新日期:2005-10-01 00:00:00