This study was supported by the National Natural Science Foundation of China (No. 81102557), the Aid Project for Innovation Platform Open Fund of Hunan Province University (No. 14K068), the Key Project of Administration of Traditional Chinese Medicine of Hunan Province (No. 201301, No. 201508), General Project of Science and Technology Department of Hunan Province (No. 2014SK3001), the Ministry of Education Key Laboratory Open Fund Established by the Province and the Ministry (No. ZYNK201405), the Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province, and the Hunan Province Natural Science Innovation Group.