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Gels for encapsulation of biological materials

  • US 5,858,746 A
  • Filed: 01/25/1995
  • Issued: 01/12/1999
  • Est. Priority Date: 04/20/1992
  • Status: Expired due to Term
First Claim
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1. A method for encapsulating, sealing, plugging, or supporting of mammalian cells, cell aggregates, or cell tissue comprising:

  • a) applying (i) a water soluble biocompatible macromer comprising at least two free radical-polymerizable substituents, wherein the macromer is non-toxic and has a molecular weight of at least 400, and (ii) a non-toxic free radical polymerization initiator selected from the group consisting of visible light or long wavelength ultraviolet light-activatable free radical initiators, thermal activatable free radical initiators, benzoyl peroxide, potassium persulfate and ammonium persulfate;

    to (iii) mammalian cells, cell aggregates, or cell tissue; and

    b) exposing the mixture to an activating agent to cause polymerization of the macromers.

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