Application of sample

Immunohistochemistry (IHC)

Somatotype Categories

The highly efficient Ultra competent DH5α cells for transformation were prepared by Inoue method (Inoue et al., 1990). Briefly, a single bacterial colony was picked from LB agar plate, inoculated into 10 ml LB medium and incubated overnight at 37°C temperature with 200 rpm shaking. Following day, 1% of the pre-inoculum was sub-cultured in 100 ml LB-broth and incubated at 18°C until OD600 of 0.5-0.6 was reached. Culture was then kept on ice for 10 min with constant shaking. Cells were pelleted by centrifugation at 5000 rpm at 4°C for 10 min. Pellet was resuspended in 40 ml of ice-cold Inoue buffer. Bacterial suspension was kept on ice for 30 min, re-spun at 2000g at 4°C for 10 min. Pellet was resuspended in 8 ml of TB bufferin which 560 μl DMSO was added and left on ice for 10 min. Finally, 100 μl aliquots were made by snap freezing in liquid nitrogen and stored at -80°C

Preparation of Ultra competent cells

After the HPLC run, vials numbered from 50 to 65 were surveyed using a Geiger counter, 4 vials with high counts were pooled into one vial and 5 μL of this 4 mL solution was measured in a liquid scintillation counter (Perkin Elmer). To the remaining solution, 800 μL of 50% ammonia solution was added to neutralise the pH and the tube was kept on ice. In a 50 mL conical tube, 45 mL of chilled water was taken, to which the neutralised IP7solution was added and kept on ice. A Sep-Pak cartridge [Waters, WAT020545] was equlibrated with 10 mL of ice cold deionized water using a 10 mL syringe. The Sep-Pak cartridge was attached to a 60 mL syringe and 50 mL of diluted IP7 solution was passed slowly through ot so that IP7would bind to the Sep-Pak column. The cartridge was washed with 8 mL of chilled water, followed by chilled 8 mL 0.2 M triethylammonium bicarbonate solution pH 8.5 (4 mL of 1.5 M triethylammonium bicarbonate, pH 8.5 + 26 mL chilled water). The bound IP7 was eluted in 4 mL of 1.5 M triethylammonium bicarbonate solution, pH 8.5, into three 1.5 mL microfuge tubes. The eluted IP7 was concentrated in a vacuum concentrator (Scanvac) at 2000 rpm, 25°C, to obtain 30-50 μL of a 1-2 μCi/μL solution of radiolabelled IP7

Purification of IP7 by anion exchange cartridge