Rapid cell-surface prion protein conversion revealed using a novel cell system.
Rapid cell-surface prion protein conversion revealed using a novel cell system.
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DOI:
10.1038/ncomms1282
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发表时间:
2011
影响因子:
16.6
通讯作者:
Tabrizi, S. J.
中科院分区:
文献类型:
--
作者:
Goold, R.;Rabbanian, S.;Sutton, L.;Andre, R.;Arora, P.;Moonga, J.;Clarke, A. R.;Schiavo, G.;Jat, P.;Collinge, J.;Tabrizi, S. J.
Prion diseases are fatal neurodegenerative disorders with unique transmissible properties. The infectious and pathological agent is thought to be a misfolded conformer of the prion protein. Little is known about the initial events in prion infection because the infecting prion source has been immunologically indistinguishable from normal cellular prion protein (PrPC). Here we develop a unique cell system in which epitope-tagged PrPC is expressed in a PrP knockdown (KD) neuroblastoma cell line. The tagged PrPC, when expressed in our PrP-KD cells, supports prion replication with the production of bona fide epitope-tagged infectious misfolded PrP (PrPSc). Using this epitope-tagged PrPSc, we study the earliest events in cellular prion infection and PrP misfolding. We show that prion infection of cells is extremely rapid occurring within 1 min of prion exposure, and we demonstrate that the plasma membrane is the primary site of prion conversion. The study of prion diseases has been hampered as there is no method to distinguish newly formed abnormal prion protein conformers. Here, the authors describe a method to study newly formed abnormal prion protein and demonstrate that it is produced within 1 minute of cell exposure to prions.
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DOI:
10.1073/pnas.1004036107
发表时间:
2010-08-10
影响因子:
11.1
作者:
Edgeworth, Julie A.;Gros, Nathalie;Collinge, John
通讯作者:
Collinge, John
影响因子:
5.4
作者:
Bosque, PJ;Prusiner, SB
通讯作者:
Prusiner, SB
影响因子:
5.4
作者:
BUTLER, DA;SCOTT, MRD;PRUSINER, SB
通讯作者:
PRUSINER, SB
影响因子:
4.8
作者:
Béranger, F;Mangé, A;Lehmann, S
通讯作者:
Lehmann, S
DOI:
10.1073/pnas.0702662104
发表时间:
2007-06-05
影响因子:
11.1
作者:
Deleault, Nathan R.;Harris, Brent T.;Supattapone, Surachai
通讯作者:
Supattapone, Surachai