Catalog # N0318 was discontinued on August 02, 2018 ;
The pSV40-CLuc Control Plasmid is a mammalian expression plasmid that constitutively expresses the secreted Cypridina luciferase (CLuc) under the SV40 early promoter.
CLuc does not use the same substrate as other marine luciferases, e.g., Renilla and Gaussia. Therefore, it is possible to assay both CLuc and GLuc independently in cell culture medium from cells expressing both reporters.
CLuc can be assayed in the culture media or cell lysate
The pSV40-CLuc Control Plasmid is a mammalian expression vector that encodes the secreted luciferase from the Ostracod Cypridina noctiluca (1) as a reporter, under the control of the constitutive SV40 promoter. Cypridina Luciferase (CLuc) is a 62 kDa protein with a native signal peptide at the N-terminus that allows it to be secreted from mammalian cells (1) so that CLuc activity can be detected in the culture medium. There is a multiple cloning site (MCS) upstream of the SV40 promoter.
Recommended sequencing primers for pSV40-CLuc:
Forward primer (23-mer) (not available from NEB)
5´-GAGTTCAAGAAAGAATGCTACAT-3´ (1888–1910)
Reverse primer (24-mer) (not available from NEB)
5´-GTAAGGACAGTCCTGGCAATGAAC-3´ (360–337)
Figure 1:
Cypridina Luciferase (CLuc) activity obtained from different CLuc plasmidsHeLa cell supernatants (20 μl) and lysates (5 μl) were assayed with
the BioLux CLuc Assay Kit (NEB #E3309). HeLa cells were seeded in 12-well
plates and transfected with 50 ng of CLuc-expressing plasmid per well. At
24 hr post-transfection, supernatants were collected and cell lysed in 100 μl
per well using Luciferase Cell Lysis Buffer (NEB #B3321). The CLuc activity
was measured in a Mithras LB940 (Berthold Technologies) luminometer set
to: 50 μl of injection, 2 seconds of delay and 2 seconds of integration.Figure 2:
pSV40-CLuc multiple cloning site (MCS) The Cypridina Luciferase sequence is located downstream of the SV40 promoter (not shown); unique restriction sites are shown.
DNASU and Addgene are central repositories for plasmid clones and collections that may also be helpful.
Highlights
Polylinker MCS: 1–51
SV40 promoter: 51-246
CLuc ORF: 291–1952
Start codon of CLuc: 291–293 Stop codon: 1950–1952
Multiple samples can be obtained from the same transfected cells (i.e., before and after experimental treatments or at multiple time points).
90–95% of CLuc activity is found in the cell culture medium, with the remaining 5-10% detectable in cell lysates (Figure 1). This allows flexibility when assaying CLuc along with other co-transfected reporters.
The activity of CLuc is high and the CLuc assay is sensitive enough to detect very small amounts of CLuc enzyme activity.
CLuc does not use the same substrate as other marine luciferases (e.g. Renilla, Gaussia). Therefore, it is possible to assay both CLuc and GLuc independently in cell culture medium from cells expressing both reporters.
The pSV40-CLuc Control Plasmid can be transfected into cells using any standard transfection protocol.
Application Features
The pSV40-CLuc Control Plasmid can be used as a control for assessing the efficiency of transfection in mammalian cells. Plasmids containing other constitutive promoter elements are also available (see Related Products). CLuc can be used as a stand alone reporter or in conjunction with other compatible reporters such as Gaussia luciferase (GLuc)(2). CLuc and GLuc are ideally suited for co-expression as both are secreted and highly active enzymes providing ease of use and sensitivity.
The Product Summary Sheet, or Data Card, includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name the majority of these document files: [Catalog Number]Datasheet-Lot[Lot Number]. For those product lots not listed below, please contact NEB at [email protected] or fill out the Technical Support Form for appropriate document.)
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The Product Summary Sheet, or Data Card, includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name the majority of these document files: [Catalog Number]Datasheet-Lot[Lot Number]. For those product lots not listed below, please contact NEB at [email protected] or fill out the Technical Support Form for appropriate document.)
This product is covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB).
New England Biolabs (NEB) is committed to practicing ethical science – we believe it is our job as researchers to ask the important questions that when answered will help preserve our quality of life and the world that we live in. However, this research should always be done in safe and ethical manner. Learn more.
While NEB develops and validates its products for various applications, the use of this product may require the buyer to obtain additional third party intellectual property rights for certain applications.
For more information about commercial rights, please contact NEB's Global Business Development team at [email protected].
This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.
Licenses
Licensed under certain patents and patent applications from the National Institute of Advanced Industrial Science and Technology ("AIST") for Research and Development Purposes.
For use of the Biolux Cypridina Luciferase Assay Kit, or associated assay reagents, in human diagnosis and measurement in relation to human health, contact [email protected]
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