NORTHBROOK, Ill., May 9, 2011 (GLOBE NEWSWIRE) -- Nanosphere, Inc. (the "Company") (Nasdaq:NSPH), a leader in the development and commercialization of advanced molecular diagnostics systems, today announced that it intends to offer shares of its common stock in a public offering. Piper Jaffray & Co. is acting as the sole book-running manager and Roth Capital Partners, LLC is acting as co-manager for the offering.