Figure 5.
Direct interaction between Notch signaling and SIRT1 in macrophages. (A) RAW264.7 cells were treated with 1 µg/ml lipopolysaccharide (LPS), and then RT-PCR was used to examine the time-dependent expression of Notch1, Notch2, and Hes1. **p < 0.01 compared with 0 h; n = 6. (B) Co-immunoprecipitation of intracellular domain of Notch (NICD) and SIRT1. RAW264.7 cells were stimulated with LPS and then the cell extracts were used for immunoprecipitation (IP) with anti-NICD antibody and immunoblotting with anti-SIRT1 antibody, and for IP with anti-SIRT1 antibody and immunoblotting with anti-NICD antibody; n = 4.