Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Jucker, M. et al.

Localization of a laminin-binding protein in brain.

A 110,000 mol.wt laminin-binding protein from newborn mouse brain recognizes a neurite promoting laminin A chain site and is related to the beta-amyloid precursor protein. In the present study, we examined the expression of 110,000 mol.wt laminin-binding protein in brains of adult mice, rats, and non-human primates. Essentially identical immunoreactivities were observed across species with distinct staining of cortical pyramidal neurons with apical dendrites, cerebellar basket cell axons, hippocampal mossy fibers, and fine labeling of processes throughout the brain. Colocalization of immunoreactivities to 110,000 mol.wt laminin-binding protein and to laminin in neurons of the adult rat brain was observed. Electron microscopy demonstrated that 110,000 mol.wt laminin-binding protein-like immunoreactivity is intracellular and is possibly associated with the neuronal cytoskeleton. Western blot analysis revealed that anti-110,000 mol.wt laminin-binding protein also recognizes a 140,000 mol.wt protein in the pellet, in addition to the 110,000 mol.wt protein in the Triton soluble extract. Antibody fractions specific to the two reactive protein species (110,000 mol.wt and 140,000 mol.wt) exhibited cross-reactivity on immunoblots and revealed similar immunohistochemical staining in adult brain. Results suggest a significant interaction between laminin-like molecules and 110,000 mol.wt laminin-binding protein-like molecules in normal brain function, in response to CNS injury and possibly in the pathogenesis of Alzheimer's disease.[1]

References

Localization of a laminin-binding protein in brain. Jucker, M., Walker, L.C., Kibbey, M.C., Kleinman, H.K., Ingram, D.K. Neuroscience (1993) [Pubmed]

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