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17-10387 | LentiBrite™ GFP Control Lentiviral Biosensor

1 vial (minimum of 3 x 10E8 IFU/mL)  
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      Key Specifications Table

      Key ApplicationsDetection Methods
      TFX, IF, ICC Fluorescent
      Catalogue Number17-10387
      Trade Name
      • LentiBrite
      • Chemicon
      DescriptionLentiBrite™ GFP Control Lentiviral Biosensor
      OverviewRead our application note in Nature Methods!
      (Click Here!)

      Learn more about the advantages of our LentiBrite Lentiviral Biosensors! Click Here

      Biosensors can be used to detect the presence/absence of a particular protein as well as the subcellular location of that protein within the live state of a cell. Fluorescent tags are often desired as a means to visualize the protein of interest within a cell by either fluorescent microscopy or time-lapse video capture. Visualizing live cells without disruption allows researchers to observe cellular conditions in real time.

      Lentiviral vector systems are a popular research tool used to introduce gene products into cells. Lentiviral transfection has advantages over non-viral methods such as chemical-based transfection including higher-efficiency transfection of dividing and non-dividing cells, long-term stable expression of the transgene, and low immunogenicity.

      EMD Millipore is introducing LentiBrite™ Lentiviral Biosensors, a new suite of pre-packaged lentiviral particles encoding important and foundational proteins of autophagy, apoptosis, and cell structure for visualization under different cell/disease states in live cell and in vitro analysis.
      • Pre-packaged, fluorescently-tagged with GFP & RFP
      • Higher efficiency transfection as compared to traditional chemical-based and other non-viral-based transfection methods
      • Ability to transfect dividing, non-dividing, and difficult-to-transfect cell types, such as primary cells or stem cells
      • Non-disruptive towards cellular function

      EMD Millipore’s LentiBrite™ GFP Control lentiviral particles provide bright fluorescence to enable live-cell analysis in difficult-to-transfect cell types.
      Background InformationThe use of genetically encoded fluorescent proteins has revolutionized cell biology by enabling real-time imaging of cells and subcellular structures. A diverse palette of fluorescent proteins is available, but these proteins vary in their suitability for live-cell imaging. EMD Millipore’s LentiBriteTM GFP Control Lentiviral Biosensor employs TagGFP2, the improved variant of the Aequorea macrodactyla GFP-like protein. TagGFP2 exhibits bright green fluorescence comparable to that of EGFP, with excitation/emission maxima at 483 and 506 nm, respectively. TagGFP2 is specially optimized for expression at 37°C and is therefore well-suited for use in mammalian cells. EMD Millipore’s LentiBrite™ GFP Control lentiviral particles provide bright fluorescence to enable live-cell analysis in difficult-to-transfect cell types.
      Product Information
      • TagGFP2 Lentivirus:
        One vial containing 25 µL of lentiviral particles at a minimum of 3 x 10E8 infectious units (IFU) per mL.
        For lot-specific titer information, please see lot specific “Viral Titer” in the product specifications of the datasheet.

      • Promoter
        EF-1 (Elongation Factor-1)

      • Multiplicty of Infection (MOI)
        MOI = Ratio of # of infectious lentiviral particles (IFU) to # of cells being infected.
        Typical MOI values for high transduction efficiency and signal intensity are in the range of 20-40. For this target, some cell types may require lower MOIs (e.g., HT-1080, HeLa, U2OS, human mesenchymal stem cells (HuMSC)), while others may require higher MOIs (e.g., human umbilical vein endothelial cells (HUVEC)).
        NOTE: MOI should be titrated and optimized by the end user for each cell type and lentiviral target to achieve desired transduction efficiency and signal intensity.
      Detection methodFluorescent
      Key Applications
      • Transfection
      • Immunofluorescence
      • Immunocytochemistry
      Application NotesFluorescence Microscopy
      (See Figure 1 in datasheet)
      HeLa cells were plated in a chamber slide and transduced with lentiviral particles at an MOI of 40 for 24 hours. After media replacement and 48 hours further incubation, cells were fixed with formaldehyde and mounted. Images were obtained by oil immersion wide-field fluorescence microscopy. The GFP displays a uniform green fluorescent distribution in the cells.

      Immunocytochemistry Comparison:
      (See Figure 2 in datasheet)
      Similar to Figure 1 (see datasheet), U2OS cells were plated in a chamber slide and transduced with lentiviral particles at an MOI of 40 for 24 hours. After 24 hours, media was replaced and cells were then further incubated for 48 hours.

      Hard-to-transfect Cell Types:
      (See Figure 3 in datasheet)
      Primary cell types HUVEC or HuMSC were plated in chamber slides and transduced with lentiviral particles at an MOI of 40 for 24 hours.

      Additional cell type:
      (See Figure 4 in datasheet)
      Primary Rat Cortical Neuron cells were treated as in Figure 1 (see datasheet).

      For optimal fluorescent visualization, it is recommended to analyze the target expression level within 24-48 hrs after transfection/infection for optimal live cell analysis, as fluorescent intensity may dim over time, especially in difficult-to-transfect cell lines. Infected cells may be frozen down after successful transfection/infection and thawed in culture to retain positive fluorescent expression beyond 24-48 hrs. Length and intensity of fluorescent expression varies between cell lines. Higher MOIs may be required for difficult-to-transfect cell lines.
      Biological Information
      Purification MethodPEG precipitation
      Physicochemical Information
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Quality AssuranceEvaluated by transduction of HT-1080 cells and fluorescent imaging performed for assessment of transduction efficiency.
      Usage Statement
      • This product contains genetically modified organisms (GMO). Within the EU GMOs are regulated by Directives 2001/18/EC and 2009/41/EC of the European Parliament and of the Council and their national implementation in the member States respectively. This legislation obliges EMD Millipore to request certain information about you and the establishment where the GMOs are being handled. Click here for Enduser Declaration (EUD) Form.
      • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
      Storage and Shipping Information
      Storage ConditionsStorage and Handling
      Lentivirus is stable for at least 4 months from date of receipt when stored at -80°C. After first thaw, place immediately on ice and freeze in working aliquots at -80°C. Frozen aliquots may be stored for at least 2 months. Further freeze/thaws may result in decreased virus titer and transduction efficiency.

      Replication-defective lentiviral vectors, such as the 3rd Generation vector provided in this product, are not known to cause any diseases in humans or animals. However, lentiviruses can integrate into the host cell genome and thus pose some risk of insertional mutagenesis. Material is a Risk Group 2 and should be handled under BSL2 controls. A detailed discussion of biosafety of lentiviral vectors is provided in Pauwels, K. et al. (2009). State-of-the-art lentiviral vectors for research use: Risk assessment and biosafety recommendations. Curr. Gene Ther. 9: 459-474.
      Packaging Information
      Material Size1 vial (minimum of 3 x 10E8 IFU/mL)
      Transport Information
      Supplemental Information