Multicellular living organisms and unmodified parts thereof and – Nonhuman animal
Patent
1993-10-14
1997-04-29
Crouch, Deborah
Multicellular living organisms and unmodified parts thereof and
Nonhuman animal
435325, 435354, 935 60, C12N 500, C12N 1500
Patent
active
056251211
ABSTRACT:
The present invention provides mice and mouse cell lines having a homozygous or heterozygous deficiency in a gene encoding a neurotrophin receptor. In a preferred embodiment of this invention, mice and cell lines carry a trkB locus specifically targeted within its tyrosine protein kinase sequences. Mice homozygous for this mutation express gp95.sup.trkB receptor of unknown function but not the high affinity functional gp145.sup.trkB tyrosine protein kinase receptors. This mutation results in multiple CNS and PNS neuronal deficiencies and in a postembryonic lethal phenotype. Such genetically modified mice are useful in model systems for studying human diseases involving neuronal degeneration and neuronal cell loss, as well as in screening for genes, proteins, or other compounds that may prevent or impede neuronal cell death or stimulate neuronal regeneration.
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Barbacid Mariano
Joyner Alexandra
Klein Rudiger
Bristol--Myers Squibb Company
Crouch Deborah
Gaul Timothy J.
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