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NAIP interacts with...
NAIP interacts with hippocalcin and protects neurons against calcium-induced cell death through caspase-3-dependent and -independent pathways
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- Mercer, Eric A (författare)
- Uppsala University, Uppsala, Sweden
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- Korhonen, Laura (författare)
- Linköpings universitet,Centrum för social och affektiv neurovetenskap,Medicinska fakulteten,Region Östergötland, Barn- och ungdomspsykiatriska kliniken,Uppsala University, Uppsala, Sweden
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- Skoglosa, Ylva (författare)
- Uppsala University, Uppsala, Sweden
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- Olsson, Per‐Anders (författare)
- Uppsala University, Uppsala, Sweden
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- Kukkonen, Jyrki P (författare)
- Uppsala University, Uppsala, Sweden
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- Lindholm, Dan (författare)
- Uppsala University, Uppsala, Sweden
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(creator_code:org_t)
- 2000-07-17
- 2000
- Engelska.
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Ingår i: EMBO Journal. - Univ Uppsala, Biomed Ctr, Dept Neurosci, Uppsala, Sweden. Univ Uppsala, Dept Physiol, Div Cellular Physiol, S-75123 Uppsala, Sweden. : Oxford University Press. - 0261-4189 .- 1460-2075. ; 19:14, s. 3597-3607
- Relaterad länk:
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https://europepmc.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Inhibitor-of-apoptosis proteins (IAPs), including neuronal apoptosis inhibitory protein (NAIP), inhibit cell death. Other IAPs inhibit key caspase proteases which effect cell death, but the mechanism by which NAIP acts is unknown. Here we report that NAIP, through its third baculovirus inhibitory repeat domain (BIR3), binds the neuron-restricted calcium-binding protein, hippocalcin, in an interaction promoted by calcium. In neuronal cell lines NSC-34 and Neuro-2a, over-expression of the BIR domains of NAIP (NAIP-BIR1-3) counteracted the calcium-induced cell death induced by ionomycin and thapsigargin. This protective capacity was significantly enhanced when NAIP-BIR1-3 was co-expressed with hippocalcin. Over-expression of the BIR3 domain or hippocalcin alone did not substantially enhance cell survival, but co-expression greatly increased their protective effects. These data suggest synergy between NAIP and hippocalcin in facilitating neuronal survival against calcium-induced death stimuli mediated through the BIR3 domain. Analysis of caspase activity after thapsigargin treatment revealed that caspase-3 is activated in NSC-34, but not Neuro-2a, cells, Thus NAIP, in conjunction with hippocalcin, can protect neurons against calcium-induced cell death in caspase-3-activated and non-activated pathways.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Cell- och molekylärbiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Cell and Molecular Biology (hsv//eng)
Nyckelord
- caspase
- hippocalcin
- IAP
- motor neuron
- NAIP
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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