基金National Natural Science Foundation of China (39925018, 90508002 , 30121001) Chinese Academy of Science (KSCX 1-R65 and RSCX2-H10)+2 种基金 National Basic Research Program of China (973 project, 2002CB713700) American Cancer Society (RPG-99-173-01) a Gcc Breast Cancer Research award and National Institutes of Health grants DK56292 and CA89019 to XY (a GCC Eminent Scholar) and NS36194 (JW).