2005年3月
Molecular interactions in the formation and deposition of beta(2)-microglobuhn-related amyloid fibrils
AMYLOID-JOURNAL OF PROTEIN FOLDING DISORDERS
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- 巻
- 12
- 号
- 1
- 開始ページ
- 15
- 終了ページ
- 25
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1080/13506120500032352
- 出版者・発行元
- INFORMA HEALTHCARE
In beta(2)-microglobulin-related (A beta(2)M) amyloidosis, a serious complication in patients on long-term dialysis, partial unfolding of beta(2)-microglobulin (beta(2)-M) is believed to be prerequisite to its assembly into A beta(2)M amyloid fibrils. Many kinds of amyloid-associated molecules, (e.g., apolipoprotein E (apoE), glycosaminoglycans (GAGs), proteoglycans (PGs)) may contribute to the development of A beta(2)M amyloidosis. In 1990s, the formation of A beta(2)M amyloid fibrils in vitro was first observed at low pH (2.0-3.0). Very recently, low concentrations of 2,2,2-trifluoroethanol (TFE) and the sub-micellar concentration of sodium dodecyl sulfate, a model for anionic phospholipids, have been reported to cause the extension of A beta(2)M amyloid fibrils at a neutral pH, inducing partial unfolding Of beta(2)-m and stabilization of the fibrils. Moreover, apoE, GAGs, and PGs were found to stabilize A beta(2)M amyloid fibrils at a neutral pH, forming a stable complex with the fibrils. Some GAGs, especially heparin, enhanced the fibril extension in the presence of TFE at a neutral pH. Some PGs, especially biglycan also induced the polymerization of acid-denatured beta(2)-M. These findings are consistent with the hypothesis that in vivo, specific molecules that affect the conformation and stability Of beta(2)-m and amyloid fibrils will have significant effects on the deposition of A beta(2)M amyloid fibrils.
- リンク情報
- ID情報
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- DOI : 10.1080/13506120500032352
- ISSN : 1350-6129
- PubMed ID : 16076607
- Web of Science ID : WOS:000230250400003