Insights into the Origin of Distinct Medin Fibril Morphologies Induced by Incubation Conditions and Seeding.
Insights into the Origin of Distinct Medin Fibril Morphologies Induced by Incubation Conditions and Seeding.
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DOI:
10.3390/ijms19051357
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发表时间:
2018-05-03
影响因子:
5.6
通讯作者:
Madine J
中科院分区:
文献类型:
--
作者:
Davies HA;Lee CF;Miller L;Liu LN;Madine J
Incubation conditions are an important factor to consider when studying protein aggregation in vitro. Here, we employed biophysical methods and atomic force microscopy to show that agitation dramatically alters the morphology of medin, an amyloid protein deposited in the aorta. Agitation reduces the lag time for fibrillation by ~18-fold, suggesting that the rate of fibril formation plays a key role in directing the protein packing arrangement within fibrils. Utilising preformed sonicated fibrils as seeds, we probed the role of seeding on medin fibrillation and revealed three distinct fibril morphologies, with biophysical modelling explaining the salient features of experimental observations. We showed that nucleation pathways to distinct fibril morphologies may be switched on and off depending on the properties of the seeding fibrils and growth conditions. These findings may impact on the development of amyloid-based biomaterials and enhance understanding of seeding as a pathological mechanism.
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影响因子:
4.8
作者:
Jha, Suman;Patil, Sharadrao M.;Alexandrescu, Andrei T.
通讯作者:
Alexandrescu, Andrei T.
DOI:
10.1126/science.1173155
发表时间:
2009-07-17
期刊:
Science (New York, N.Y.)
影响因子:
--
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Maji SK;Perrin MH;Sawaya MR;Jessberger S;Vadodaria K;Rissman RA;Singru PS;Nilsson KP;Simon R;Schubert D;Eisenberg D;Rivier J;Sawchenko P;Vale W;Riek R
通讯作者:
Riek R
DOI:
10.1074/jbc.m114.602177
发表时间:
2015-03-20
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Davies HA;Madine J;Middleton DA
通讯作者:
Middleton DA
影响因子:
3.4
作者:
Morel, Bertrand;Varela, Lorena;Conejero Lara, Francisco
通讯作者:
Conejero Lara, Francisco
影响因子:
5.5
作者:
Larsson, Annika;Malmstrom, Susanna;Westermark, Per
通讯作者:
Westermark, Per