Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2005-2-21
pubmed:abstractText
Beta-amyloid (Abeta) is a major protein component of senile plaques in Alzheimer's disease, and is neurotoxic when aggregated. The size of aggregated Abeta responsible for the observed neurotoxicity and the mechanism of aggregation are still under investigation; however, prevention of Abeta aggregation still holds promise as a means to reduce Abeta neurotoxicity. In research presented here, we show that Hsp20, a novel alpha-crystallin isolated from the bovine erythrocyte parasite Babesia bovis, was able to prevent aggregation of denatured alcohol dehydrogenase when the two proteins are present at near equimolar levels. We then examined the ability of Hsp20 produced as two different fusion proteins to prevent Abeta amyloid formation as indicated by Congo Red binding; we found that not only was Hsp20 able to dramatically reduce Congo Red binding, but it was able to do so at molar ratios of Hsp20 to Abeta of 1 to 1000. Electron microscopy confirmed that Hsp20 does prevent Abeta fibril formation. Hsp20 was also able to significantly reduce Abeta toxicity to both SH-SY5Y and PC12 neuronal cells at similar molar ratios. At high concentrations of Hsp20, the protein no longer displays its aggregation inhibition and toxicity attenuation properties. Size exclusion chromatography indicated that Hsp20 was active at low concentrations in which dimer was present. Loss of activity at high concentrations was associated with the presence of higher oligomers of Hsp20. This work could contribute to the development of a novel aggregation inhibitor for prevention of Abeta toxicity.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-10021375, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-10090743, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-10448084, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-10736264, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-10794724, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-10950306, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11068040, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11259311, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11425316, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11447233, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11509390, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11702068, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11704278, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11756677, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-11886820, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-12058030, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-12189146, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-12209786, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-12702875, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-1438232, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-14596589, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-2289145, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-3285343, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-8093612, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-8463843, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-8577726, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-8621479, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-8939877, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-9369246, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-9501253, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-9600986, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-9662374, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-9667848, http://linkedlifedata.com/resource/pubmed/commentcorrection/15722443-9887214
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/Alcohol Dehydrogenase, http://linkedlifedata.com/resource/pubmed/chemical/Amyloid beta-Peptides, http://linkedlifedata.com/resource/pubmed/chemical/Carrier Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Congo Red, http://linkedlifedata.com/resource/pubmed/chemical/HSP20 Heat-Shock Proteins, http://linkedlifedata.com/resource/pubmed/chemical/HSPB6 protein, human, http://linkedlifedata.com/resource/pubmed/chemical/Heat-Shock Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Histidine, http://linkedlifedata.com/resource/pubmed/chemical/Maltose-Binding Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Phosphoproteins, http://linkedlifedata.com/resource/pubmed/chemical/Recombinant Fusion Proteins, http://linkedlifedata.com/resource/pubmed/chemical/polyhistidine
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0961-8368
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
593-601
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Hsp20, a novel alpha-crystallin, prevents Abeta fibril formation and toxicity.
pubmed:affiliation
Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.
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