Colony PCR of transformants For colony PCR, growth from the colonies obtained after transformation were resuspended in sterile PCR water and used as template for PCR. Colony CT99021 clinical trial PCR of transformants was used to corroborate the presence of the plasmid pSilent-Dual2G in the transformed colonies. The primers used for the determination of the presence of the transforming plasmids were: G418 (fw) 5′ ctgaatgaactgcaggacga

3′ and G418 (rev) 5′ agaactcgtcaagaaggcga 3′. These primers amplify a 622 bp fragment of the geneticin resistance cassette. The PCR parameters were as follows: an initial denaturation step at 94°C for 2 min, followed by 35 cycles of denaturation step at 94°C for 1 min, annealing at 45°C for 1 min, and extension at 72°C for 2 min. PCR products were analyzed on agarose gels for the presence of a band of the expected size. Real-Time PCR The sscmk1 gene cDNA cloned in pCR®2.1-TOPO plasmid in E.coli Top10 cells was obtained from the cDNA collection of the laboratory and was used as template for Real Time PCR standard curve. The coding region of the sscmk1 gene was amplified using the insert containing plasmid as template and primers MSFSSM-CMK (fw) 5′atgagcttctctagtatg 3′ and KQGSP-CMK (rev) 5′ tcaaggtgagccctgctt 3′. The PCR product was excised from PD0332991 mouse the gel using Spin-X Centrifuge Tube Filters

as described by the manufacturer (0.22 μm, buy LDN-193189 Corning Costar Corp.) and the concentration of DNA quantified using the NanoDrop ® ND-1000 UV-Vis Spectrophotometer (Thermo Fisher Scientific).

Different dilutions of this cDNA were used as template for the amplification of a short region of 86 bp from the sscmk1 gene comprised between nucleotides 632-717. The primers were: SSCMK1 (fw) 5′ggtttgaatcgagggata 4��8C 3′ and SSCMK1 (rev) 5′ cttgccctgctcacaaat 3′. PCR was performed with iQ™ SYBR® Green Supermix (Bio-Rad Laboratories, Hercules, CA, USA) using a primer concentration of 400 nM and 5 μl of the cDNA dilution (10-100 ng of cDNA) as a template in a total volume of 25 μl. Reactions were set up with 2 replicates per sample. Controls without templates were included for the primer set. PCR cycling parameters were 95°C for 3 min, then 50 cycles at 95°C for 10 sec and 57°C for 1 min (data collection and real time analysis enabled) followed by 1 min at 95°C, 1 min at 55°C and 100 cycles at 55°C for 10 sec increasing temperature after cycle 2 by 0.4°C (melting curve data collection and analysis enabled). Fluorescence emissions were detected with using the iCycler Real-Time PCR Detection System (Bio-Rad Laboratories). A standard curve was constructed of log of ng of sscmk1 cDNA vs Ct. The RNA was extracted from cells transformed with pSD2G and cells transformed with pSD2G-RNAi1 and converted to cDNA as described above. The same primers used for the standard curve were used for the samples.