Determinants of organ tropism of sendai virus.

Determinants of organ tropism of sendai virus.
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仙台病毒器官向性的决定因素。

DOI:
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发表时间:
1997
期刊:
Frontiers in Bioscience
影响因子:
--
通讯作者:
J. Seto
J. Seto
中科院分区:
--
文献类型:
--
作者:
M. Tashiro;N. McQueen;J. Seto

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野生型仙台病毒仅在小鼠中嗜肺。从持续感染的组织培养细胞中分离出蛋白酶激活突变体ts-f1和F1-R。从野生型仙台病毒中分离出其他突变体,其表型与泛嗜性突变体F1-R相似。对突变体的基因组进行测序,并在由基因编码的几种蛋白质中发现突变。融合蛋白(F)中的6个突变中有3个被认为是泛向性决定因子的主要候选者。突变体的表征导致的发现,交换(Ser到Pro)残基115旁边的F蛋白的切割位点是主要的决定因素,导致在增强的F蛋白的可切割性。另一个重要的发现是极化上皮细胞和小鼠支气管上皮中F1-R的双极出芽。这归因于基质(M)蛋白中的两个突变,在残基128(Asp至Gly)和210(Ile至Thr)处。因此,F1-R的泛向性的决定因素是F蛋白的蛋白酶活化和归因于突变的M蛋白的双极出芽以及微管的增强破坏。
Wild-type Sendai virus is exclusively pneumotropic in mice. Protease activation mutants, ts-f1 and F1-R, were isolated from persistently infected tissue culture cells. Additional mutants were isolated from wild-type Sendai virus with phenotypes similar to the pantropic mutant, F1-R. The genome of the mutants was sequenced and mutations were revealed in several proteins encoded by the genes. Three of the six mutations in the fusion (F) proteins were considered prime candidates for the determinant of pantropism. Characterization of the mutants led to the finding that the exchange (Ser to Pro) residue 115 next to the cleavage site of the F protein was the primary determinant that resulted in the enhanced cleavability of the F protein. Another important finding was bipolar budding of F1-R in polarized epithelial cells and mouse bronchial epithelium. This has been attributed to two mutations in the matrix (M) protein, at residues 128 (Asp to Gly) and 210 (Ile to Thr). Thus the determinants of pantropism of F1-R are protease activation of the F protein and bipolar budding attributed to the mutated M protein and enhanced disruption of microtubules.
对仙台病毒两个宿主范围突变体的 HN、M、NP、P 和 L 蛋白编码基因的核苷酸序列分析。
DOI: 10.1016/0042-6822(90)90040-x
发表时间: 1990
期刊: Virology
影响因子: 3.7
作者:
Middleton,Y;Tashiro,M;Thai,T;Oh,J;Seymour,J;Pritzer,E;Klenk,HD;Rott,R;Seto,JT
通讯作者: Seto,JT
仙台病毒发病机制的分子生物学。
DOI: --
发表时间: 1991
期刊: Behring Institute Mitteilungen
影响因子: --
作者:
Seto,JT;Tashiro,M
通讯作者: Tashiro,M
源自宿主范围突变体的仙台病毒泛嗜性变体的表征。
DOI: 10.1016/0042-6822(88)90601-0
发表时间: 1988
期刊: Virology
影响因子: 3.7
作者:
Tashiro,M;Pritzer,E;Khoshnan,MA;Yamakawa,M;Kuroda,K;Klenk,HD;Rott,R;Seto,JT
通讯作者: Seto,JT
嗜肺回复体源自仙台病毒的泛嗜性突变体 F1-R。
DOI: 10.1016/0042-6822(91)90839-4
发表时间: 1991
期刊: Virology
影响因子: 3.7
作者:
Tashiro,M;James,I;Karri,S;Wahn,K;Tobita,K;Klenk,HD;Rott,R;Seto,JT
通讯作者: Seto,JT
仙台病毒在极化上皮细胞中的出芽位点是小鼠向性和致病性的决定因素之一。
DOI: 10.1016/0042-6822(92)90443-s
发表时间: 1992
期刊: Virology
影响因子: 3.7
作者:
Tashiro,M;Seto,JT;Choosakul,S;Yamakawa,M;Klenk,HD;Rott,R
通讯作者: Rott,R