Identification of novel immune adjuvants and their acting mechanism on dendritic cell function
新型免疫佐剂的鉴定及其对树突状细胞功能的作用机制
基本信息
- 批准号:16590403
- 负责人:
- 金额:$ 2.3万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2004
- 资助国家:日本
- 起止时间:2004 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Dendritic cells (DCs) are critically involved in host defense by recognizing a variety of microorganism-derived molecular components, i.e. immune adjuvants, and producing various cytokines. A group of transmembrane proteins, Toll-like receptors (TLRs), are critical for these processes. I have clarified some of these mechanisms by utilizing several gene targeting mice. I have already identified antiviral reagents, imidazoquinoline derivatives, as TLR7 ligands and also revealed that virus-derived single stranded RNAs can also function as TLR7 ligands. TLR3 and TLR4 can recognize double stranded RNAs and lipopolysaccarides (LPS), respectively, and their signaling can induce type I interferons (IFNs). IκB kinase (IKK) family members, IKKε/ι and TBK1, were found to be critical for TLR3/4-induced type I IFN production. These IKKs were also involved in virus-induced type I IFN production. A DC subset, plasmacytoid DC, expresses TLR7 and TLR9 exclusively among TLRs. Because TLR9 is involved in recognizing CpG DNA, it can be assumed that PDC can be regarded as nucleic acid-recognizing DC. Notably, PDC is unique in producing type I IFN, especially IFN-α, in response to TLR7/9 signaling. Another IKK family member, IKKα, was found to be critical for TLR7/9-induced type I IFN production from PDC. Furthermore, by utilizing a variety of DCs, IL-12-inducing activity was detected in helminth extracts. The activity was dependent on a cytoplasmic TLR adapter, MyD88, indicating that the extracts include some TLR ligands. These findings should contribute to the establishment of novel drugs for immune regulation.
树突状细胞(DC)通过识别各种微生物衍生的分子成分,即免疫调节器并产生各种细胞因子,从而参与宿主防御。一组跨膜蛋白,Toll样受体(TLR)对于这些过程至关重要。我已经鉴定出抗病毒试剂,咪唑喹啉衍生物,为TLR7配体,并且还揭示了病毒衍生的单链RNA也可以用作TLR7配体。 TLR3和TLR4分别可以识别双链RNA和Lipopolysaccarides(LPS),它们的信号传导可以诱导I型干扰素(IFNS)。发现IκB激酶(IKK)家族成员IKKε/和TBK1对于TLR3/4诱导的I型IFN产生至关重要。这些IKK还参与了病毒诱导的I型IFN产生。 DC子集的浆细胞样DC,仅在TLR中表达TLR7和TLR9。由于TLR9参与识别CpG DNA,因此可以假定PDC可以被视为核酸识别的直流。值得注意的是,PDC在产生I型IFN(尤其是IFN-α)方面对TLR7/9信号的响应是独一无二的。发现另一个IKK家庭成员IKKα对于TLR7/9诱导的I型IFN产生至关重要。此外,通过利用多种DC,在蠕虫提取物中检测到IL-12诱导的活性。该活性取决于细胞质TLR适配器MyD88,表明提取物包括一些TLR配体。这些发现应有助于建立新型药物进行免疫调节。
项目成果
期刊论文数量(46)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The roles of two IκB kinase-related kinases in lipopolysaccharide and double stranded RNA signaling and viral infection.
两种 IκB 激酶相关激酶在脂多糖和双链 RNA 信号转导和病毒感染中的作用。
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Imadome K;Shimizu N;Arai A;Miura O;Watanabe K;Nakamura H;Nonoyama S;Yamamoto K;Fujiwara S.;H.Hemmi 他
- 通讯作者:H.Hemmi 他
Essential Role of IkappaB Kinase (IKK) alpha in Thymic Organogenesis Required for the Establishment of Self-Tolerance.
IkappaB 激酶 (IKK) α 在建立自我耐受所需的胸腺器官发生中的重要作用。
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Honma;K.;Udono;H.;Kohno;T.;Yamamoto;K.;Ogawa;A.;Takemori;T.;Kumatori;A.;Suzuki;S.;Matsuyama;T.;Yui;K.;D.Kinoshita
- 通讯作者:D.Kinoshita
IκB kinase α is critical for Toll-like receptor-7- and 9-induced interferon-α production.
IκB 激酶 α 对于 Toll 样受体 7 和 9 诱导的干扰素 α 产生至关重要。
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Shimizu;K.;et al.;K.Hoshino
- 通讯作者:K.Hoshino
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KAISHO Tsuneyasu其他文献
KAISHO Tsuneyasu的其他文献
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{{ truncateString('KAISHO Tsuneyasu', 18)}}的其他基金
Elucidation of behavior and functions of a dendritic cell subset with high crosspresenting activity
阐明具有高交叉呈递活性的树突状细胞亚群的行为和功能
- 批准号:
23659245 - 财政年份:2011
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Clarification of molecular mechanisms for regulating dendritic cell subset functions
阐明调节树突状细胞亚群功能的分子机制
- 批准号:
23390124 - 财政年份:2011
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Molecular mechanisms for type I interferon production by Toll-like receptor-stimulated dendritic cells
Toll样受体刺激树突状细胞产生I型干扰素的分子机制
- 批准号:
20390146 - 财政年份:2008
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Dendritic cell activation mechanisms by nucleic by nucleic acid immune adjuvants.
核酸免疫佐剂通过核酸激活树突状细胞的机制。
- 批准号:
18590483 - 财政年份:2006
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Dendritic cell activation mechanism by Toll-like receptors
Toll样受体的树突状细胞激活机制
- 批准号:
14570280 - 财政年份:2002
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Mechanism of NK cell dysfunction in C/EBP-γ deficient mice
C/EBP-γ缺陷小鼠NK细胞功能障碍的机制
- 批准号:
12670304 - 财政年份:2000
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Mechanism of B cell proliferation and diffentiation in peripheral lymphoid organs
外周淋巴器官B细胞增殖和分化的机制
- 批准号:
10670313 - 财政年份:1998
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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