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Fig. 1. RNAi reduces Bub1 levels to
2% in
70% of cells. HeLa and DLD-1 cells were transfected with either control or Bub1 siRNA duplexes then analyzed 48 hours later. (A) Blot of HeLa cell lysates showing that, across a population, RNAi reduces Bub1 levels to 10-25%. In order to quantitate the level of repression, the lysate from the Bub1 RNAi culture was analyzed side by side with a lysate from a control RNAi culture diluted in lysis buffer to 50, 25 and 10% of its original concentration. (B) Quantitation of immunofluorescence analysis in DLD-1 cells demonstrating that while
70% of the mitotic cells in Bub1-RNAi cultures show low levels of Bub1 expression,
18% appear untransfected and
12% appear partially repressed.