Alterations in inducible 72-kDa heat shock protein and the chaperone cofactor BAG-1 in human brain after head injury.

作者: Neal A. Seidberg , Robert S. B. Clark , Xiaopeng Zhang , Yichen Lai , Minzhi Chen

DOI: 10.1046/J.1471-4159.2003.01547.X

关键词: EndocrinologyWestern blotTraumatic brain injuryTranscription factorPathologyBiologyHeat shock proteinHsp70Chaperone (protein)Gene isoformHuman brainInternal medicine

摘要: The stress response in injured brain is well characterized after experimental ischemic and traumatic injury (TBI); however, the induction regulation of humans TBI remains largely undefined. Accordingly, we examined tissue from adult patients (n = 8) that underwent emergent surgical decompression TBI, for alterations inducible 72-kDa heat shock protein (Hsp70), constitutive 73-kDa (Hsc70), isoforms chaperone cofactor BAG-1. Control samples 6) were obtained postmortem dying causes unrelated to CNS trauma. Western blot analysis showed Hsp70, but not Hsc70, was increased versus controls. Both Hsp70 Hsc70 coimmunoprecipitated with 33 46, 50-kDa BAG-1 ratio 46/33-kDa controls, suggesting negative modulation Hsp70/Hsc70 refolding activity brain. These data implicate its by Bcl-2 family member BAG-1, humans.

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