Intracellular Trafficking of DNA for Gene Therapy

用于基因治疗的 DNA 细胞内运输

基本信息

  • 批准号:
    10710840
  • 负责人:
  • 金额:
    $ 39.81万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2023
  • 资助国家:
    美国
  • 起止时间:
    2023-09-22 至 2027-08-31
  • 项目状态:
    未结题

项目摘要

Under almost all conditions using any method, the levels of gene transfer to any cell or tissue are low because many barriers exist for the efficient delivery of genes to cells. The primary goal of our laboratory is to identify and overcome the intracellular barriers to promote effective gene delivery and therapy. Exogenous viral or non- viral DNA must cross the plasma membrane, travel through the cytoplasm and the cytoskeletal networks, cross the nuclear envelope, localize to specific regions within the nucleus, and be transcribed in order for gene therapy to be successful. We have shown that once in the cytoplasm, plasmids carrying DNA nuclear targeting sequences (DTS) that are required for nuclear import in non-dividing cells rapidly associate with transcription factors that mediate movement along microtubules and across the nuclear envelope. NF-kB is one such factor that binds to several ubiquitously active DTSs and is required for DNA nuclear import, but in the cytoplasm it is maintained in a sequestered state, unable to bind DNA. The question then is how is NF-kB activated to bind to plasmids and mediate their cytoskeletal movement and nuclear import? In the case of NF-kB, a major pathway for its activation is through a set of cytoplasmic dsDNA sensors, such as cGAS-STING, that are part of the innate immune system and drive inflammatory responses. When dsDNA binds to cGAS, signaling cascades are initiated that result in activation of key pro-inflammatory transcription factors (including NF-kB) and ultimately production of pro-inflammatory cytokines. Thus, a major focus in the gene therapy space has been to block activation of these sensors to reduce inflammation. However, we have observed that when cGAS is silenced, cytoplasmically injected plasmids fail to traffic to the nucleus. We hypothesize that limited activation of one or more of these sensors is actually needed for low level activation of key transcription factors in order to facilitate DNA nuclear import in non-dividing cells. If we can find ways to limit sensor activation, but not abolish it, this will allow for enhanced gene delivery with limited accompanying inflammation. We have also spent considerable effort detailing the distribution of plasmids inside the nucleus and have found that the subnuclear mislocalization of plasmids can affect their transcriptional activity. We have found that plasmids localize to discrete transcriptional domains within the nucleus based on the type of promoter (Pol I, Pol II, or Pol III) they carry and that when two different promoter types are placed on one plasmid, not only is the intranuclear distribution of the DNA different that either promoter type alone, but transgene expression is significantly reduced. We will dissect the pathways used for DNA movement within the nucleus and exploit them to improve transgene expression based on the subnuclear localization of the transfected DNA. Our specific aims are to (1) determine whether cytosolic dsDNA sensors are required for DNA nuclear import; (2) evaluate whether residence time of DNA in the cytoplasm affects sensor activation and transfection efficiency; and (3) characterize how subnuclear organization affects exogenous DNA expression.
在几乎所有条件下使用任何方法,基因转移到任何细胞或组织的水平都很低,因为

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

David A Dean其他文献

David A Dean的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('David A Dean', 18)}}的其他基金

A multimodal delivery and treatment approach for Acute Lung Injury
急性肺损伤的多模式递送和治疗方法
  • 批准号:
    10378509
  • 财政年份:
    2020
  • 资助金额:
    $ 39.81万
  • 项目类别:
Mitigating Acute Lung Injury by Cell-specific Targeting of MTOR
通过细胞特异性靶向 MTOR 减轻急性肺损伤
  • 批准号:
    10187645
  • 财政年份:
    2020
  • 资助金额:
    $ 39.81万
  • 项目类别:
Mitigating Acute Lung Injury by Cell-specific Targeting of MTOR
通过细胞特异性靶向 MTOR 减轻急性肺损伤
  • 批准号:
    10631224
  • 财政年份:
    2020
  • 资助金额:
    $ 39.81万
  • 项目类别:
Mitigating Acute Lung Injury by Cell-specific Targeting of MTOR
通过细胞特异性靶向 MTOR 减轻急性肺损伤
  • 批准号:
    10414888
  • 财政年份:
    2020
  • 资助金额:
    $ 39.81万
  • 项目类别:
Gene therapy for GERD-associated esophageal epithelial barrier dysfunction
GERD相关食管上皮屏障功能障碍的基因治疗
  • 批准号:
    10372106
  • 财政年份:
    2020
  • 资助金额:
    $ 39.81万
  • 项目类别:
A multimodal delivery and treatment approach for Acute Lung Injury
急性肺损伤的多模式递送和治疗方法
  • 批准号:
    10593959
  • 财政年份:
    2020
  • 资助金额:
    $ 39.81万
  • 项目类别:
Mitigating Acute Lung Injury by Cell-specific Targeting of MTOR
通过细胞特异性靶向 MTOR 减轻急性肺损伤
  • 批准号:
    10056811
  • 财政年份:
    2020
  • 资助金额:
    $ 39.81万
  • 项目类别:
Novel Peptide/siRNA Nanoparticles for Treatment of Acute Lung Injury
用于治疗急性肺损伤的新型肽/siRNA纳米颗粒
  • 批准号:
    9376455
  • 财政年份:
    2017
  • 资助金额:
    $ 39.81万
  • 项目类别:
Development of a gene therapy approach to treat acute lung injury using a preclinical, large animal model
使用临床前大型动物模型开发治疗急性肺损伤的基因治疗方法
  • 批准号:
    9044084
  • 财政年份:
    2016
  • 资助金额:
    $ 39.81万
  • 项目类别:
Cell-specific gene delivery methods for expression and silencing in the lung
用于肺部表达和沉默的细胞特异性基因递送方法
  • 批准号:
    8978332
  • 财政年份:
    2014
  • 资助金额:
    $ 39.81万
  • 项目类别:

相似海外基金

Construction of affinity sensors using high-speed oscillation of nanomaterials
利用纳米材料高速振荡构建亲和传感器
  • 批准号:
    23H01982
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Affinity evaluation for development of polymer nanocomposites with high thermal conductivity and interfacial molecular design
高导热率聚合物纳米复合材料开发和界面分子设计的亲和力评估
  • 批准号:
    23KJ0116
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
    Grant-in-Aid for JSPS Fellows
Platform for the High Throughput Generation and Validation of Affinity Reagents
用于高通量生成和亲和试剂验证的平台
  • 批准号:
    10598276
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
Development of High-Affinity and Selective Ligands as a Pharmacological Tool for the Dopamine D4 Receptor (D4R) Subtype Variants
开发高亲和力和选择性配体作为多巴胺 D4 受体 (D4R) 亚型变体的药理学工具
  • 批准号:
    10682794
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
Collaborative Research: DESIGN: Co-creation of affinity groups to facilitate diverse & inclusive ornithological societies
合作研究:设计:共同创建亲和团体以促进多元化
  • 批准号:
    2233343
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
    Standard Grant
Collaborative Research: DESIGN: Co-creation of affinity groups to facilitate diverse & inclusive ornithological societies
合作研究:设计:共同创建亲和团体以促进多元化
  • 批准号:
    2233342
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
    Standard Grant
Molecular mechanisms underlying high-affinity and isotype switched antibody responses
高亲和力和同种型转换抗体反应的分子机制
  • 批准号:
    479363
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
    Operating Grants
Deconstructed T cell antigen recognition: Separation of affinity from bond lifetime
解构 T 细胞抗原识别:亲和力与键寿命的分离
  • 批准号:
    10681989
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
CAREER: Engineered Affinity-Based Biomaterials for Harnessing the Stem Cell Secretome
职业:基于亲和力的工程生物材料用于利用干细胞分泌组
  • 批准号:
    2237240
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
    Continuing Grant
ADVANCE Partnership: Leveraging Intersectionality and Engineering Affinity groups in Industrial Engineering and Operations Research (LINEAGE)
ADVANCE 合作伙伴关系:利用工业工程和运筹学 (LINEAGE) 领域的交叉性和工程亲和力团体
  • 批准号:
    2305592
  • 财政年份:
    2023
  • 资助金额:
    $ 39.81万
  • 项目类别:
    Continuing Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了