LentiBrite GFP-LC3-II Enrichment Kit (Flow Cytometry)

Autophagy, a degradative pathway that provides recycled nutrients to cells under stress, plays both protective and deleterious roles in many diseases, including cancer, neurodegeneration, and infections. Members of the LC3 family play a key role in the maturation of the autophagosome, the central organelle of autophagy. LC3 precursors, diffusely distributed in the cytosol, are proteolytically processed to form LC3-I. Upon initiation of autophagy, the C-terminal glycine is modified by addition of a phosphatidylethanolamine (PE) to form LC3-II, which translocates rapidly to nascent autophagosomes in a punctate distribution. DNA constructs encoding fluorescent proteins fused to LC3 are widely employed for introduction into cells for monitoring autophagosome formation by fluorescence microscopy. <br />EMD Millipore′s LentiBrite GFP-LC3 lentiviral particles provide bright fluorescence and precise localization to enable live cell analysis of autophagy in difficult-to-transfect cell types. The <br /><br />LentiBrite GFP-LC3-II Enrichment Kit (Flow Cytometry) combines our GFP-LC3 lentiviral particles with a selective permeabilization procedure for GFP-LC3 transduced cells that allows release of cytosolic LC3-I and retention of autophagosome-bound LC3-II. This procedure allows detection of autophagosome density by flow cytometry.

EMD Millipore′s LentiBrite GFP-LC3 lentiviral particles provide bright fluorescence and precise localization to enable live cell analysis of autophagy in difficult-to-transfect cell types. The LentiBrite GFP-LC3-II Enrichment Kit (Flow Cytometry) combines our GFP-LC3 lentiviral particles with a selective permeabilization procedure for GFP-LC3 transduced cells that allows release of cytosolic LC3-I and retention of autophagosome-bound LC3-II. This procedure allows detection of autophagosome density by flow cytometry.

For optimal fluorescent analysis, 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.

1. TagGFP2-LC3 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 datasheet. • Virus Description: 3rd generation HIV-based VSV-G pseudotyped lentiviral particles. Lentiviral particles were generated using the pPACKH1 Lentivector Packaging System and purified by PEG precipitation. • Promoter: EF-1 (Elongation Factor-1). • Expression Marker Description: TagGFP2 (Evrogen) fused at its C-terminus with human LC3A (Accession # NP_115903) truncated to leave G120 (lipidation site) at the C-terminus. (Store at -80°C) 2. Autophagy Reagent A: One vial (lyophilized) (Store at 2-8°C) 3. 10x Enrichment Buffer (Part No. CS210552): One vial containing 1 mL (Store at 2-8°C) 4. 5x Assay Buffer: (Part No. CS210529): One bottle containing 3 mL (Store at 2-8°C)

Store TagGFP2-LC3 Lentivirus 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. Store Autophagy Reagent A, 10x Enrichment Buffer, and 5x Assay Buffer at 2-8°C. All components are stable for at least 4 months from date of receipt when stored as recommended above.

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 {HCompany} 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.