Research Paper | Published:

Controlled Release of Interleukin-2 from Biodegradable Microspheres

Bio/Technologyvolume 8pages755758 (1990) | Download Citation



We have evaluated the use of biodegradable poly(DL-lactide-co-glycolide) microspheres for the controlled release of interleukin-2 (IL-2) and its modified forms: succinyl IL-2 (SIL-2) and polyethylene glycol-modified IL-2 (PEG IL-2). We show that a microsphere formulation can be prepared from PEG IL-2 using HSA as an excipient which, after an initial burst, releases 2–3% PEG IL-2 per day in a bioactive form continuously over a 20- to 30-day period.

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  1. Cetus Corporation, 1400 Fifty-Third Street, Emeryville, CA, 94608

    • Maninder Singh Hora
    • , Rajsharan K. Rana
    • , Jack H. Nunberg
    •  & Thomas R. Tice
  2. Southern Research Institute, 2000 Ninth Avenue South, Birmingham, AL, 35205

    • Richard M. Gilley
    •  & Michael E. Hudson


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