* Corresponding authors

^a Biological Science Research Center, Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing, People's Republic of China
E-mail: Xiaqy@swu.edu.cn

^b Department of Biomedical Engineering, Tufts University, Medford, MA, USA
E-mail: David.kaplan@tufts.edu

^c Institute for Clean Energy & Advanced Materials, Faculty of Materials & Energy, Southwest University, Chongqing, People's Republic of China

^d Key Laboratory of Biochemistry and Molecular Pharmacology of Chongqing, Chongqing Medical University, Chongqing, People's Republic of China

^e Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Chongqing, People's Republic of China