Patents Assigned to Univ. of North Carolina at Chapel Hill
  • Publication number: 20070238176
    Abstract: A scaled-up multi-coaxial fiber bioreactor, and variations of this bioreactor. The device is characterized by a hollow housing and an array of from about 20 to about 400 modules of hollow fibers, where each module includes at least three coaxial semipermeable hollow fibers. The innermost fiber provides a boundary for an innermost compartment which is connected to inlet and outlet ports. Arranged coaxially around the central hollow fiber are several other hollow fibers with their respective compartments, each compartment defined by a respective annular space between adjacent fibers and each including inlet and outlet ports. An outermost compartment for permitting integral aeration is the space between the outer side of the outermost fibers and the inner side of the housing, and has inlet and outlet ports. The hollow housing has inlet and outlet manifolds and flow distributors for each of the compartments. In a preferred embodiment the bioreactor is used as an extracorporeal liver.
    Type: Application
    Filed: September 15, 2005
    Publication date: October 11, 2007
    Applicant: Univ. of North Carolina at Chapel Hill
    Inventors: Jeffrey MacDonald, Stephen Wolfe
  • Patent number: 5413923
    Abstract: Homologous recombination is employed to inactivate genes, particularly genes associated with MHC antigens. Particularly, the .beta..sub.2 -microglobulin gene is inactivated for reducing or eliminating Class I MHC antigens. The resulting cells may be used as universal donors. In addition, embryonic stem cells may be modified by homologous recombination for use in producing chimeric or transgenic mammalian hosts, which may be used as source of universal donor organs, or as models for drug and transplantation therapies.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: May 9, 1995
    Assignees: Cell Genesys, Inc., Univ. of North Carolina at Chapel Hill
    Inventors: Raju Kucherlapati, Beverly H. Koller, Oliver Smithies
  • Patent number: 4999366
    Abstract: A method of controlling hyperlipidemia in mammals which comprises adminstering to a mammal an amount effective to control hyperlipidemia of a compound having hypolipidemic activity and the structural formula: ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different provided both are not hydrogen when R.sup.3 is an alkenyl or cycloalkenyl group, are selected from the group consisting of hydrogen; alkyl of 1 to 18 carbons; substituted alkyl of 1 to 18 carbons; cycloalkyl of 4 to 10 ring carbon atoms; substituted cycloalky of 4 to 10 ring carbon stoms; alkoxy of 1 to 8 carbon atoms; amido; carbamoyl; acyloxy; alkoxycarbonyl; halogen, aryl and substituted aryl, or together R.sup.1 and R.sup.2 from a C.sub.3 to C.sub.7 alkylene group; andR.sup.3 is hydrogen; lower alkyl; substituted lower alkyl; cycloalkyl; substituted cyloalkyl; aryl; substituted aryl; a group --COR.sup.4 were R.sup.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: March 12, 1991
    Assignees: The North Carolina Central Univ., The Univ. of North Carolina at Chapel Hill
    Inventors: Robert A. Izydore, Iris H. Hall