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5 protocols using pcmv egfp

1

Yap isoform functional analysis via luciferase reporter

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Hek293T cells were obtained from American Type Culture Collection (ATCC) and maintained in Dulbecco's Modified Eagle Medium (DMEM; Cellgro) supplemented with 10% FBS (Gibco). Cells were maintained at 37°C in a humidified atmosphere with 5% CO2. Hek293T cells were co-transfected with glutamine synthetase reporter constructs29 (link), the Renilla plasmid, and mutant isoforms of yap64 (link), 65 (link), including pCMV-Yap1-2α-S127A (Addgene, #17794), or pCMV-Yap1-2α-S94A (Addgene, #33102). pCMV-EGFP (Addgene, #11153) was used as control. Cells were harvested 48 hrs after transfection using the Dual-Glo Luciferase Assay System (Promega) and assayed according to the manufacturer's directions.
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2

Regulation of Ccl2 Promoter Activity

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HEK293 cells (ATCC CRL-3216) were transfected using Lipofectamine2000 reagent (Invitrogen) according to the manufacturer’s instructions. The 1.5 kb sequence immediately proximal to the first exon of the rat Ccl2 gene was cloned into the XhoI and HindIII sites of the pGL3 Basic luciferase reporter plasmid (Promega). Cells were co-transfected with pCMV-eGFP (Addgene #13031) or pCMV-YAP(S127A) (Addgene #27370), and treated with verteporfin (Sigma #SML0534) or DMSO vehicle for 24 h. Following transfection and treatments, cells were lysed with Passive Lysis Buffer (Promega), and luciferase activity was measured using the luciferase assay system (Promega) with an OPTOCOMP I luminometer (MGM Instruments). The luminescence was normalized by total protein content.
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3

Yap isoform functional analysis via luciferase reporter

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Hek293T cells were obtained from American Type Culture Collection (ATCC) and maintained in Dulbecco's Modified Eagle Medium (DMEM; Cellgro) supplemented with 10% FBS (Gibco). Cells were maintained at 37°C in a humidified atmosphere with 5% CO2. Hek293T cells were co-transfected with glutamine synthetase reporter constructs29 (link), the Renilla plasmid, and mutant isoforms of yap64 (link), 65 (link), including pCMV-Yap1-2α-S127A (Addgene, #17794), or pCMV-Yap1-2α-S94A (Addgene, #33102). pCMV-EGFP (Addgene, #11153) was used as control. Cells were harvested 48 hrs after transfection using the Dual-Glo Luciferase Assay System (Promega) and assayed according to the manufacturer's directions.
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4

Plasmid-Mediated Cell Transfection Protocols

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A RAW264.7 (murine macrophage) cell line was provided by Dr. Terry Connell (Department of Microbiology and Immunology, University at Buffalo, SUNY). The cell line was maintained in medium prepared as follows: 50 mL of FBS (heat inactivated), 5 mL of 100 mM MEM sodium pyruvate, 5 mL of 1 M HEPES buffer, 5 mL of penicillin/streptomycin solution, and 1.25 g of g D-(+)glucose added to 500 mL RPMI-1640 and filter sterilized. The HeLa (human epithelial) cell line was provided by Dr. Stelios Andreadis (Department of Chemical and Biological Engineering, University at Buffalo, SUNY) and cultured in Dulbecco’s Modified Eagle Medium (DMEM; Gibco BRL, Grand Island, NY) supplemented with 10% (v/v) FBS (GIBCO) and 1% (v/v) Antibiotic-Antimycotic (A/A; Gibco). All cell lines were housed in T75 flasks and cultured at 37°C/5% CO2.
To determine in vitro transfection efficacy, we employed two reporter genes encoding luciferase and EGFP with each driven by a cytomegalovirus promoter within plasmids pCMV-Luc (Elim Biopharmaceuticals) and pCMV-EGFP (Addgene plasmid 11153[34 (link)]). Alternatively, in vivo transfection was evaluated using pCI-neo-cOVA (Addgene plasmid 25097[35 (link)]). Plasmids were transformed into and isolated from an E. coli cloning host (GeneHogs, Invitrogen) using a PureYield Plasmid Midiprep System (Promega) prior to being used in the experiments outlined below.
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5

Polymer-DNA Nanocomplex Formation

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Nanocomplexes were formed based on spontaneous electrostatic interactions between PEG-b-CPCL-70 and pCMV-EGFP pDNA at various polymer:pDNA mass ratios. The pDNAs were produced by an Escherichia coli bacterial host (GeneHogs, Invitrogen), with an enhanced green fluorescent protein reporter gene, driven by a cytomegalovirus promoter within plasmids (pCMV-EGFP, Addgene). A stock aqueous solution of polymer was prepared at a concentration of 4 mg/mL in ultrapure water. For each polymer:pDNA nanocomplex mass ratio, a specific amount of polymer solution was mixed with a pDNA solution, gently vortexed, and incubated for 30 min to ensure the formation of polymer:pDNA nanocomplexes. For example, for the preparation of nanocomplex at 200:1 of PEG-b-CPCL-70:pDNA mass ratio, 400 μL of polymer stock solution (4 mg/mL) was mixed with pCMV-EGFP pDNA (with a final concentration of 8 µg/mL) to a final volume of 1 mL.
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