On number NM021175) was cloned from a NT-157 supplier patient liver specimen. In brief, RNA was extracted using TRIzol RNA isolation reagent (Invitrogen). The cDNA was synthesized using RT II reverse transcriptase (Invitrogen), and 2 ml of cDNA was used for PCR amplification. Hepcidin gene was amplified with primers 59-ACCAGAGCAAGCTCAAGACC-39 and 59-CAGGGCAGGTAGGTTCTACG-39. The reaction was performed at 94uC for 3 min, followed by 38 cycles at 94uC for 40 s, 58uC for 30 s, 72uC for 45 s and finished with an extension at 72uC for 10 min. The PCR product was then purified and cloned into pEF6/V5-His-TOPO vector. The expression vector pTOPO-hepcidin and the anti-sense vector pTOPO-anti-hepcidin were sequenced using the BigDye Terminator V3.1 Kit from Applied Biosystems.Small Interfering RNA TransfectionTo knockdown STAT3, synthesized small interfering RNA (siRNA) duplexes were purchased from Cell Signaling co. (Danvers, MA). To knockdown 1326631 hepcidin, plasmid shRNA specific for hepcidin was purchased from Source Bioscience (Nottingham, UK). Cells were seeded in six-well plates 16 hours before transfection at a confluence of 50 , and transfected with 100 nM siRNA or 2 mg plasmid shRNA using Lipofectamine 2000 (Invitrogen) according to the manufacturer’s instruction.RNA Extraction, Reverse Transcription-PCR (RT-PCR) and Quantitative Real-time PCRRNA was extracted from cells or patient tissues using TRIzol RNA isolation reagent (Invitrogen, Carlsbad, CA). To prevent DNA contamination, total RNA was treated with RNase-free DNase II (Invitrogen, Carlsbad, CA). Human glyceraldehyde-3phosphate dehydrogenase gene (GAPDH, forward primer 59TCACCAGGGCTGCTTTTA-39 and reverse primer 59-TTCACACCCATGACGAACA-39) was used as an internal control in the PCR amplification. A two-step RT-PCR procedure was performed in all experiments. First, total RNA samples (1.6 mg per reaction) were reversely transcribed into cDNAs by RT II reverse transcriptase (Invitrogen). Then, the cDNAs were used as templates in PCR with hepcidin specific primers 59-ACCAGAGCAAGCTCAAGACC-39 and 59-CAGGGCAGGTAGGTTCTACG-39 or with HCV specific primers 59-TTCACGCAGAAAGCGTCTAG-39 and 59-CACTCGCAAGCACCCTATCAGGCAG-39. The primers for IFIT1 detection were 59TGGCTAAGCAAAACCCTGCA-39 and 59-TCTGGCCTTTCAGGTGTTTCAC-39. The primers for OAS1 detection were 59-AGGTGGTAAAGGGTGGCTCC-39 and 59-ACAACCAGGTCAGCGTCAGAT-39. The amplification reactions were performed by using AmpliTaq Gold (Applied Biosystems, Foster City, CA), and PCR bands were visualized under UV light andWestern Blot AnalysisProteins were separated by SDS-PAGE (10 or 15 acrylamide), transferred to nitrocellulose membranes, and then blocked with 5 skim milk in a phosphate-buffered saline. Membranes were incubated with one of the following antibodies: mouse antihepcidin monoclonal BIBS39 web antibody (1:250; abcam), anti-STAT3 antibody (1:250; Santa Cruz), anti-pSTAT3 antibody (1:100; Santa Cruz), or anti-actin antibody (1:8000; Sigma-Aldrich). After washing, membranes were incubated with peroxidase-conjugated goat anti-mouse immunoglobulin G or goat anti-rabbit immunoglobulin G (Sigma-Aldrich). Signals were detected by using the SupersignalH West Pico Chemiluminescent Substrate (PIERCE) according to the manufacturer’s directions.ImmunofluorescenceCells were grown on glass cover slips and fixed with 5 acetic acid in ethanol. The cells were washed with phosphate-bufferedHepcidin Exhibits Antiviral Activity against HCVsaline and incubated with monoclonal antibody to HCV.On number NM021175) was cloned from a patient liver specimen. In brief, RNA was extracted using TRIzol RNA isolation reagent (Invitrogen). The cDNA was synthesized using RT II reverse transcriptase (Invitrogen), and 2 ml of cDNA was used for PCR amplification. Hepcidin gene was amplified with primers 59-ACCAGAGCAAGCTCAAGACC-39 and 59-CAGGGCAGGTAGGTTCTACG-39. The reaction was performed at 94uC for 3 min, followed by 38 cycles at 94uC for 40 s, 58uC for 30 s, 72uC for 45 s and finished with an extension at 72uC for 10 min. The PCR product was then purified and cloned into pEF6/V5-His-TOPO vector. The expression vector pTOPO-hepcidin and the anti-sense vector pTOPO-anti-hepcidin were sequenced using the BigDye Terminator V3.1 Kit from Applied Biosystems.Small Interfering RNA TransfectionTo knockdown STAT3, synthesized small interfering RNA (siRNA) duplexes were purchased from Cell Signaling co. (Danvers, MA). To knockdown 1326631 hepcidin, plasmid shRNA specific for hepcidin was purchased from Source Bioscience (Nottingham, UK). Cells were seeded in six-well plates 16 hours before transfection at a confluence of 50 , and transfected with 100 nM siRNA or 2 mg plasmid shRNA using Lipofectamine 2000 (Invitrogen) according to the manufacturer’s instruction.RNA Extraction, Reverse Transcription-PCR (RT-PCR) and Quantitative Real-time PCRRNA was extracted from cells or patient tissues using TRIzol RNA isolation reagent (Invitrogen, Carlsbad, CA). To prevent DNA contamination, total RNA was treated with RNase-free DNase II (Invitrogen, Carlsbad, CA). Human glyceraldehyde-3phosphate dehydrogenase gene (GAPDH, forward primer 59TCACCAGGGCTGCTTTTA-39 and reverse primer 59-TTCACACCCATGACGAACA-39) was used as an internal control in the PCR amplification. A two-step RT-PCR procedure was performed in all experiments. First, total RNA samples (1.6 mg per reaction) were reversely transcribed into cDNAs by RT II reverse transcriptase (Invitrogen). Then, the cDNAs were used as templates in PCR with hepcidin specific primers 59-ACCAGAGCAAGCTCAAGACC-39 and 59-CAGGGCAGGTAGGTTCTACG-39 or with HCV specific primers 59-TTCACGCAGAAAGCGTCTAG-39 and 59-CACTCGCAAGCACCCTATCAGGCAG-39. The primers for IFIT1 detection were 59TGGCTAAGCAAAACCCTGCA-39 and 59-TCTGGCCTTTCAGGTGTTTCAC-39. The primers for OAS1 detection were 59-AGGTGGTAAAGGGTGGCTCC-39 and 59-ACAACCAGGTCAGCGTCAGAT-39. The amplification reactions were performed by using AmpliTaq Gold (Applied Biosystems, Foster City, CA), and PCR bands were visualized under UV light andWestern Blot AnalysisProteins were separated by SDS-PAGE (10 or 15 acrylamide), transferred to nitrocellulose membranes, and then blocked with 5 skim milk in a phosphate-buffered saline. Membranes were incubated with one of the following antibodies: mouse antihepcidin monoclonal antibody (1:250; abcam), anti-STAT3 antibody (1:250; Santa Cruz), anti-pSTAT3 antibody (1:100; Santa Cruz), or anti-actin antibody (1:8000; Sigma-Aldrich). After washing, membranes were incubated with peroxidase-conjugated goat anti-mouse immunoglobulin G or goat anti-rabbit immunoglobulin G (Sigma-Aldrich). Signals were detected by using the SupersignalH West Pico Chemiluminescent Substrate (PIERCE) according to the manufacturer’s directions.ImmunofluorescenceCells were grown on glass cover slips and fixed with 5 acetic acid in ethanol. The cells were washed with phosphate-bufferedHepcidin Exhibits Antiviral Activity against HCVsaline and incubated with monoclonal antibody to HCV.

On number NM021175) was cloned from a patient liver specimen. In

About author

Leave a reply

You must be logged in to post a comment.