Species: Human

Cell type: Lung Carcinoma

Transgenes: Near-infrared fluorescent protein (iRFP; excitation/emission: 690/713nm) with neomycin resistance (Neo) for selection with G418

Media: DMEM, 10% FBS, 1% Pen/Strep, 0.6 mg/mL G418

Description: A549-iRFP-Neo is a polyclonal population of the human lung carcinoma cell line A549 (ATCC® CCL-185™) transduced with LV-iRFP-P2A-Neo (LV033) encoding the near-infrared fluorescent protein (iRFP) cDNA under the spleen focus-forming virus (SFFV) promoter linked to the neomycin resistance gene (Neo) via a P2A cleavage peptide.

The lentiviral vector used is a self-inactivating (SIN) vector in which the viral enhancer and promoter has been deleted. Transcription inactivation of the LTR in the SIN provirus increases biosafety by preventing mobilization by replication competent viruses and enables regulated expression of the genes from the internal promoters without cis-acting effects of the LTR (Miyoshi et al., J Virol. 1998).

Mycoplasma Testing: The A549-iRFP-Neo cell line has been tested for mycoplasma contamination and is certified mycoplasma free.

Cell Line Authentication: The parental A549 cell line was authenticated and certified free of interspecies cross-contamination by short tandem repeat (STR) profiling with 9 STR loci including CSF1PO, D13S317, D16S539, D5S818, D7S820, TH01, TPOX, vWA and sex chromosome marker Amelogenin.

Recommended uses:

In vitro: This is a high iRFP expressing clone suitable for use as a positive control cell line in fluorescence assays to validate iRFP expression in your lentiviral transduced cells.

In vivo: A549 cells form metastases in the lungs of mice post systemic administration. The in vivo growth of these metastases can be monitored using noninvasive optical imaging.

Cell photos: Low- and high-density cell morphology (200X)

Flow Cytometry for iRFP: A549-iRFP-Neo (red) or control (A549-Fluc-Puro; grey) cells were fixed with paraformaldehyde and analyzed by flow cytometry (20,000 events).