Infectious Prions Accumulate to High Levels in Non Proliferative C2C12 Myotubes
Figure 7
C2C12 myotubes are also susceptible to 22L and ME7 prions.
(A) Brain homogenates (BH) from mice clinically affected with prion disease. 10 ul of 1% BH treated with or without 50 µg/ml PK was loaded in each lane. 22L and ME7 prions were generated in tga20 mice. RML prions were from C57Bl/6 mice. PrPSc was detected with 3F10 antibody. (B) C2C12 cells were infected with brain homogenates from 22L, ME7 and RML. At 4, 8 and 14 days post exposure, cells were lysed, lysates treated with 50 ug/mL of proteinase K and immunoblotted to detect the presence of PrPSc. 30 µg of protein equivalent was loaded into each lane for 22L and ME7 samples. 10 µl of 0.1% BH was loaded as a control. 10 µg of protein equivalent from RML infected myotubes was loaded.