This work was supported by the grants from the National Natural Science Foundation of China (81270420, 81470434, 81503074), the Construct Program of the Key Discipline in Hunan Province, the China Postdoctoral Science Foundation (2014M560647 and 2015T80875), Hunan Provincial Science and Technology Project (2015RS4040), Administration of Traditional Chinese Medicine of Hunan Province (201578), Health and Family planning commission of Hunan Province (B2015-48) and Zhengxiang Scholar Program of University of South China (2014-004).