HTLV-1 Particle Analysis and Gag Interactions
HTLV-1 颗粒分析和堵嘴相互作用
基本信息
- 批准号:9914879
- 负责人:
- 金额:$ 48.13万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2012
- 资助国家:美国
- 起止时间:2012-09-28 至 2023-04-30
- 项目状态:已结题
- 来源:
- 关键词:AdultAdult T-Cell Leukemia/LymphomaAffectAgeAntibodiesBiogenesisCapsidCell Culture TechniquesCell membraneCell surfaceCellsCryoelectron MicroscopyDiseaseEtiologyEventFemaleFluorescenceFluorescence MicroscopyFoundationsGeographic LocationsGoalsHIV-1HumanHuman CharacteristicsHuman T-Cell Leukemia VirusesHuman T-lymphotropic virus 1IndividualInflammatoryInvestigationKnowledgeLightMalignant NeoplasmsMason-Pfizer monkey virusMembraneMethodsMicrobial BiofilmsMicroscopyMolecularMorphologyNaturePathway interactionsPopulationPrevalenceProcessReportingResolutionRetroviridaeRoleRous sarcoma virusScanningSiteSite-Directed MutagenesisSpectrum AnalysisSpinal Cord DiseasesStructural ProteinStructureSyndromeSystemTestingTranslationsTropical Spastic ParaparesisViralVirionVirusVirus AssemblyVirus Replicationagedcomparativedensityexperimental studyinnovationinnovative technologiesinsightmolecular modelingmolecular sitenew technologynovelnovel therapeutic interventionparticlereconstructiontomographytransmission processviral transmissionvirological synapsevirologyvirus envelope
项目摘要
Abstract
Human T-cell leukemia virus (HTLV-1) infects about 15-20 million individuals worldwide and is the etiological
agent of an adult T-cell leukemia/lymphoma (ATLL), and can also result in an inflammatory disease syndrome
called HTLV-1-associated myelopathy (HAM)/tropical spastic paraparesis (TSP). HTLV-1 antibody prevalence
rates vary among geographical areas, ranging from 0.2 to 10% among adults. This antibody prevalence
increases with age, and can affect as much as 20 to 50% of the female population aged 60 and above. HTLV-1
is notorious for being difficult to study in cell culture, which has prohibited a rigorous analysis of how these
viruses replicate in cells, including the steps involved in retrovirus assembly. The details for how retrovirus
particle assembly occurs are poorly understood even for other more tractable retroviral systems like that of
human immunodeficiency virus type 1 (HIV-1). For instance, recent evidence indicates that Gag-Gag
interactions differ among retroviruses, which helps explain morphological differences that we have documented
among immature retrovirus particles. Furthermore, the role for membrane-bound, non-punctate (np) Gag in the
biogenesis of Gag puncta, as well as the nature of Gag puncta biogenesis in the context of cell-to-cell contacts
also remain poorly understood aspects of the retrovirus assembly pathway. This is particularly for HTLV-1, for
which we have found to have fundamentally distinct differences to that of HIV-1 regarding the role of
membrane-bound np Gag in Gag punta biogenesis. In this application, we propose to continue our
investigations on HTLV-1 immature and mature particle structure and particle biogenesis through innovative
state-of-the-art experimental approaches with appropriate comparative analyses with HIV-1. In particular, we
will apply cryo-electron microscopy/tomography (cryo-EM/ET), photoactivated localization microscopy (PALM),
total internal reflection fluorescence (TIRF) microscopy and the novel technology of z-scan fluorescence
fluctuation spectroscopy (FFS) in living cells to investigate 1) analysis of immature HTLV-1 Gag lattice
structure, 2) the importance of membrane-bound, np Gag in HTLV-1 particle biogenesis, and 3) HTLV-1
particle biogenesis in the context of cell-cell contacts. Careful comparisons will be done with HIV-1. These
novel studies harness innovative technologies in order to provide new insights into a highly significant and
poorly understood aspect of the HTLV-1 particle assembly process, which is fundamentally distinct from that of
HIV-1 and other retroviruses. Furthermore, our studies represent some of the most detailed studies conducted
on the assembly of virus structural proteins, which provides fundamentally important information in virology on
the molecular nature of virus particle assembly at the plasma membrane for enveloped viruses.
抽象的
人类 T 细胞白血病病毒 (HTLV-1) 感染全世界约 15-20 百万人,是病因
成人 T 细胞白血病/淋巴瘤 (ATLL) 的病原体,也可能导致炎症性疾病综合征
称为 HTLV-1 相关脊髓病 (HAM)/热带痉挛性截瘫 (TSP)。 HTLV-1 抗体流行率
不同地理区域的发病率有所不同,成年人的发病率从 0.2% 到 10% 不等。 这种抗体的流行程度
随着年龄的增长而增加,并且可能影响 60 岁及以上女性人口的 20% 至 50%。 HTLV-1
因难以在细胞培养中研究而臭名昭著,这阻碍了对这些如何进行严格的分析
病毒在细胞中复制,包括逆转录病毒组装所涉及的步骤。 逆转录病毒如何运作的详细信息
即使对于其他更容易处理的逆转录病毒系统,例如
人类免疫缺陷病毒 1 型 (HIV-1)。 例如,最近的证据表明,Gag-Gag
逆转录病毒之间的相互作用有所不同,这有助于解释我们记录的形态差异
在未成熟的逆转录病毒颗粒之间。 此外,膜结合的非点状 (np) Gag 在
Gag puncta 的生物发生,以及细胞间接触背景下 Gag puncta 生物发生的本质
对逆转录病毒组装途径的了解仍然知之甚少。 这尤其适用于 HTLV-1,
我们发现它与 HIV-1 的作用有根本上的不同
Gag punta 生物发生中的膜结合 np Gag。 在此申请中,我们建议继续我们的
通过创新研究 HTLV-1 未成熟和成熟颗粒结构和颗粒生物发生
最先进的实验方法,并与 HIV-1 进行适当的比较分析。 特别是,我们
将应用冷冻电子显微镜/断层扫描 (cryo-EM/ET)、光激活定位显微镜 (PALM)、
全内反射荧光 (TIRF) 显微镜和 z 扫描荧光新技术
波动光谱 (FFS) 在活细胞中研究 1) 未成熟 HTLV-1 Gag 晶格的分析
结构,2) 膜结合的重要性,np Gag 在 HTLV-1 颗粒生物发生中的重要性,以及 3) HTLV-1
细胞与细胞接触背景下的粒子生物发生。 将与 HIV-1 进行仔细比较。 这些
新颖的研究利用创新技术,为高度重要且重要的问题提供新的见解。
对 HTLV-1 粒子组装过程知之甚少,该过程与
HIV-1 和其他逆转录病毒。 此外,我们的研究代表了一些最详细的研究
关于病毒结构蛋白的组装,它提供了病毒学中基本重要的信息
包膜病毒质膜上病毒颗粒组装的分子性质。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Morphology and ultrastructure of retrovirus particles.
逆转录病毒颗粒的形态和超微结构。
- DOI:10.3934/biophy.2015.3.343
- 发表时间:2015
- 期刊:
- 影响因子:1.5
- 作者:Zhang W;Cao S;Martin JL;Mueller JD;Mansky LM
- 通讯作者:Mansky LM
The Retrovirus Capsid Core.
逆转录病毒衣壳核心。
- DOI:10.1007/978-981-10-8456-0_8
- 发表时间:2018
- 期刊:
- 影响因子:0
- 作者:Zhang,Wei;Mendonça,LuizaM;Mansky,LouisM
- 通讯作者:Mansky,LouisM
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Louis M Mansky其他文献
Analysis of the HTLV-1 Gag assembly pathway by biophysical fluorescence
- DOI:
10.1186/1742-4690-8-s1-a206 - 发表时间:
2011-06-06 - 期刊:
- 影响因子:3.900
- 作者:
Keir H Fogarty;Yan Chen;Iwen F Grigsby;Patrick J Macdonald;Elizabeth M Smith;Jolene L Johnson;Jonathan M Rawson;Joachim D Mueller;Louis M Mansky - 通讯作者:
Louis M Mansky
Louis M Mansky的其他文献
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{{ truncateString('Louis M Mansky', 18)}}的其他基金
Cryo-ET Guided Single Particle Reconstruction of HIV
冷冻电子断层扫描引导的 HIV 单粒子重建
- 批准号:
10245058 - 财政年份:2020
- 资助金额:
$ 48.13万 - 项目类别:
Cryo-ET Guided Single Particle Reconstruction of HIV
冷冻电子断层扫描引导的 HIV 单粒子重建
- 批准号:
10033396 - 财政年份:2020
- 资助金额:
$ 48.13万 - 项目类别:
HTLV-1 Particle Analysis and Gag Interactions
HTLV-1 颗粒分析和堵嘴相互作用
- 批准号:
8664892 - 财政年份:2012
- 资助金额:
$ 48.13万 - 项目类别:
HTLV-1 Particle Analysis and Gag Interactions
HTLV-1 颗粒分析和堵嘴相互作用
- 批准号:
8537954 - 财政年份:2012
- 资助金额:
$ 48.13万 - 项目类别:
HTLV-1 Particle Analysis and Gag Interactions
HTLV-1 颗粒分析和堵嘴相互作用
- 批准号:
8371118 - 财政年份:2012
- 资助金额:
$ 48.13万 - 项目类别:
HTLV-1 Particle Analysis and Gag Interactions
HTLV-1 颗粒分析和堵嘴相互作用
- 批准号:
9333502 - 财政年份:2012
- 资助金额:
$ 48.13万 - 项目类别:
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