Example 2
This example describes in vivo expression of CD40L and 41BBL in a human SKOV3 ovarian cancer xenogeneic model.
6-8 week old nude mice were administered with 4.5×106 SKOV3.Luc cells. Once tumors reached in average 150 mm3, mice were injected intratumorally (i.t.) with 1×1010 v.p. per mouse or the same volume of PBS (30 μl).
Twenty four hours later, tumors were removed and protein extracts were prepared. One hundred μg of protein extracts were separated in 12% SDS-PAGE and transferred to nitrocellulose membranes (Bio-Rad Laboratories). The membranes were probed with anti-h4-1-BBL antibody (ab68185 Abcam, Cambridge, UK) or anti-CD40L antibody (ab2391 Abcam, Cambridge, UK). Anti β-actin antibody (A4700; Sigma, St. Louis, Mo.) and anti-α tubulin (12g10 DSHB) were used as loading controls. Enhanced chemiluminescence reagents were used to detect the signals following the manufacturer's instructions (Amersham, Little Chalfont, UK). CD40L expression is show in