Viruses 2013, 5, 1250-1260; doi:10.3390/v5051250 viruses ISSN 1999-4915 www.mdpi.com/journal/viruses Review Suppression of Coronavirus Replication by Cyclophilin Inhibitors Yoshikazu Tanaka 1,*, Yuka Sato 2 and Takashi Sasaki 3 1 Department of Veterinary Hygiene, Veterinary School, Nippon Veterinary & Life Science University, Tokyo 180-8602, Japan 2 Department of Microbiology and Immunology, Division of Molecular Virology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan 3 Laboratory of Bacterial Genomics, Pathogen Genomics Center, National Institute of Infectious Diseases, Tokyo 162-8640, Japan * Author to whom correspondence should be addressed; E-Mail: