Multistage Delivery of Active Agents
111111111111111111111111111111111111111111111111111111111111111111111111111111 (12) United States Patent (io) Patent No.: US 10,143,658 B2 Ferrari et al. (45) Date of Patent: Dec. 4, 2018 (54) MULTISTAGE DELIVERY OF ACTIVE 6,355,270 B1 * 3/2002 Ferrari ................. A61K 9/0097 AGENTS 424/185.1 6,395,302 B1 * 5/2002 Hennink et al........ A61K 9/127 (71) Applicants:Board of Regents of the University of 264/4.1 2003/0059386 Al* 3/2003 Sumian ................ A61K 8/0241 Texas System, Austin, TX (US); The 424/70.1 Ohio State University Research 2003/0114366 Al* 6/2003 Martin ................. A61K 9/0097 Foundation, Columbus, OH (US) 424/489 2005/0178287 Al* 8/2005 Anderson ............ A61K 8/0241 (72) Inventors: Mauro Ferrari, Houston, TX (US); 106/31.03 Ennio Tasciotti, Houston, TX (US); 2008/0280140 Al 11/2008 Ferrari et al. Jason Sakamoto, Houston, TX (US) FOREIGN PATENT DOCUMENTS (73) Assignees: Board of Regents of the University of EP 855179 7/1998 Texas System, Austin, TX (US); The WO WO 2007/120248 10/2007 Ohio State University Research WO WO 2008/054874 5/2008 Foundation, Columbus, OH (US) WO WO 2008054874 A2 * 5/2008 ............... A61K 8/11 (*) Notice: Subject to any disclaimer, the term of this OTHER PUBLICATIONS patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days. Akerman et al., "Nanocrystal targeting in vivo," Proc. Nad. Acad. Sci. USA, Oct. 1, 2002, 99(20):12617-12621. (21) Appl. No.: 14/725,570 Alley et al., "Feasibility of Drug Screening with Panels of Human tumor Cell Lines Using a Microculture Tetrazolium Assay," Cancer (22) Filed: May 29, 2015 Research, Feb.
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