The native copper- and zinc-binding protein metallothionein blocks copper-mediated Abeta aggregation and toxicity in rat cortical neurons.
The native copper- and zinc-binding protein metallothionein blocks copper-mediated Abeta aggregation and toxicity in rat cortical neurons.
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DOI:
10.1371/journal.pone.0012030
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发表时间:
2010-08-11
期刊:
影响因子:
3.7
通讯作者:
West AK
中科院分区:
文献类型:
--
作者:
Chung RS;Howells C;Eaton ED;Shabala L;Zovo K;Palumaa P;Sillard R;Woodhouse A;Bennett WR;Ray S;Vickers JC;West AK
A major pathological hallmark of AD is the deposition of insoluble extracellular β-amyloid (Aβ) plaques. There are compelling data suggesting that Aβ aggregation is catalysed by reaction with the metals zinc and copper. We now report that the major human-expressed metallothionein (MT) subtype, MT-2A, is capable of preventing the in vitro copper-mediated aggregation of Aβ1–40 and Aβ1–42. This action of MT-2A appears to involve a metal-swap between Zn7MT-2A and Cu(II)-Aβ, since neither Cu10MT-2A or carboxymethylated MT-2A blocked Cu(II)-Aβ aggregation. Furthermore, Zn7MT-2A blocked Cu(II)-Aβ induced changes in ionic homeostasis and subsequent neurotoxicity of cultured cortical neurons. These results indicate that MTs of the type represented by MT-2A are capable of protecting against Aβ aggregation and toxicity. Given the recent interest in metal-chelation therapies for AD that remove metal from Aβ leaving a metal-free Aβ that can readily bind metals again, we believe that MT-2A might represent a different therapeutic approach as the metal exchange between MT and Aβ leaves the Aβ in a Zn-bound, relatively inert form.
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DOI:
10.3233/jad-2009-1068
发表时间:
2009
期刊:
Journal of Alzheimer's disease : JAD
影响因子:
--
作者:
Hegde ML;Bharathi P;Suram A;Venugopal C;Jagannathan R;Poddar P;Srinivas P;Sambamurti K;Rao KJ;Scancar J;Messori L;Zecca L;Zatta P
通讯作者:
Zatta P
DOI:
10.1016/s0140-6736(20)32205-4
发表时间:
2021-04-24
期刊:
Lancet (London, England)
影响因子:
--
作者:
Scheltens P;De Strooper B;Kivipelto M;Holstege H;Chételat G;Teunissen CE;Cummings J;van der Flier WM
通讯作者:
van der Flier WM
影响因子:
6.1
作者:
Adlard, PA;West, AK;Vickers, JC
通讯作者:
Vickers, JC
DOI:
10.1016/s0006-291x(84)80190-4
发表时间:
1984-01-01
影响因子:
3.1
作者:
GLENNER, GG;WONG, CW
通讯作者:
WONG, CW
影响因子:
3.8
作者:
Hidalgo, J;Aschner, M;Vasák, M
通讯作者:
Vasák, M