Co-culture of probiotic bacteria for growth factor delivery in minigut organoids
共培养益生菌以在小肠类器官中递送生长因子
基本信息
- 批准号:9789051
- 负责人:
- 金额:$ 17.63万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-09-20 至 2020-07-31
- 项目状态:已结题
- 来源:
- 关键词:3-DimensionalAnimal ExperimentsAnimal ModelBacteriaBehaviorBiological ModelsBiosensorButyratesCell Culture TechniquesCell Differentiation processCell LineCell divisionCell physiologyCell secretionCellsChloride IonChloridesChronic DiseaseCoculture TechniquesCommunicationDetectionDevelopmentDiabetes MellitusDifferentiation AntigensEngineered ProbioticsEngineeringEnterocytesEnteroendocrine CellEnvironmentEpithelial CellsEscherichia coliFluorescence MicroscopyGene ExpressionGenesGeneticGnotobioticGoalsGoldGrowthGrowth FactorHarvestHeartHormonalImageImageryInflammatory Bowel DiseasesIntestinal SecretionsIntestinesKnowledgeLabelMetabolic syndromeModelingMolecularMonitorOrganoidsOutcomeOutputPathway interactionsPeptidesPhenotypePhysiologyProbioticsProductionProtein SecretionProteinsRegulationResourcesSerotoninSignal TransductionStem cellsTechnologyTestingTherapeuticTimeTime Studybasecell growthcell typecommensal bacteriacostcytokinedesignexperimental studygut bacteriagut microbiotahost-microbe interactionshuman diseaseimprovedintestinal cryptintestinal villimicrobialpathogenpathogenic bacteriaphysical chemical interactionpublic health relevanceresponsesmall moleculethree dimensional cell culturetranslational impact
项目摘要
PROJECT SUMMARY
Interactions between gut bacteria and intestinal cells have been implicated in many human
diseases including inflammatory bowel disease, diabetes,metabolic syndrome, and many more.
Currently, gnotobiotic animal models are the gold standard for testing and understanding these
interactions, but animal experiments are costly and gnotibiotic colonies require large amounts of
resources. We propose that cultured intestinal organoids or "miniguts" can be used as an
intermediate environment in whichbacteria can be cultured and the effect of bacterial culture
and secretion on mammalian gene expression can be monitored at relatively shorter times and
lower costs. Our approach is to co-culture engineered probiotic bacteria to accurately monitor
and actively influence the development of intestinal epithelial cells in 3D culture.
We propose to develop this technology via the following Specific Aims:
Aim 1: Establish real-time phenotypic characterization of cell differentiation in miniguts
by engineered whole-cell biosensors. We will develop whole cell biosensors for intestinal
secretions such as chloride and serotonin using engineered probiotic E. coli bacteria. The
rationale behind this aim is that secretion of these molecules is an indication of proper
differentiation of intestinal stem cells into distinct cell types. The biosensor with fluorescent
output will operate in real-time which will allow dynamic visualization of secretion phenotypes by
fluorescence microscopy.
Aim 2: Alter minigut growth by secretion of small molecules and growth factors from
commensal bacteria. We will engineer probiotic bacteria to deliver molecules that negatively
and positively influence the proliferation of stem cells in 3D culture. The rationale of this aim is
that secretion of butyrate, a key metabolite, is naturally microbially-driven in the gut and the
effect of microbial butyrate production on gut cells is profound. In addition, we wish to study
positive regulation of growth by bacterial secretion the growth factor R-spondin-1 in the minigut
lumen.
Taken together, successful implementation of these aims will develop a robust co-culture
platform for the optimization of 3D organoid cultures and the study of host-microbe interactions.
项目摘要
肠道细菌和肠道细胞之间的相互作用已经涉及许多人类
疾病包括炎症性肠道疾病、糖尿病、代谢综合征等等。
目前,gnotobiotic动物模型是测试和理解这些的金标准。
相互作用,但动物实验是昂贵的,gnotibiotic殖民地需要大量的
我们提出,培养的肠道类器官或“miniguts”可以用作
细菌可培养的中间环境和细菌培养的效果
和分泌对哺乳动物基因表达的影响可以在相对较短的时间内监测,
更低的成本。我们的方法是共培养工程益生菌,
并积极影响肠上皮细胞在3D培养中的发育。
我们建议通过以下具体目标开发这项技术:
目的1:建立小肠细胞分化的真实的实时表型表征
通过工程全细胞生物传感器。我们将开发全细胞生物传感器,
分泌物,如氯化物和血清素使用工程益生菌大肠杆菌细菌。
这一目标背后的基本原理是,这些分子的分泌是适当的
将肠干细胞分化为不同的细胞类型。
输出将以真实的实时操作,这将允许分泌表型的动态可视化,
荧光显微镜
目的2:通过分泌小分子和生长因子来改变小肠的生长,
益生菌。我们将设计益生菌,
并积极影响干细胞在3D培养中的增殖。这一目标的基本原理是
丁酸的分泌,一种关键的代谢产物,是肠道中自然微生物驱动的,
微生物丁酸生产对肠道细胞的影响是深远的。此外,我们希望研究
细菌分泌的生长因子R-spondin-R11在小肠中对生长的积极调节
流明
总之,这些目标的成功实施将形成一种强大的共同发展文化
该平台用于优化3D类器官培养物和研究宿主微生物相互作用。
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)
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Thomas J Mansell其他文献
Thomas J Mansell的其他文献
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{{ truncateString('Thomas J Mansell', 18)}}的其他基金
Location-specific In Vivo Sensing and Imaging of Butyrate in the GI Tract
胃肠道中丁酸盐的特定位置体内传感和成像
- 批准号:
10433447 - 财政年份:2022
- 资助金额:
$ 17.63万 - 项目类别:
Location-specific In Vivo Sensing and Imaging of Butyrate in the GI Tract
胃肠道中丁酸盐的特定位置体内传感和成像
- 批准号:
10611459 - 财政年份:2022
- 资助金额:
$ 17.63万 - 项目类别:
Creating a niche for engineered live biotherapeutics
为工程活生物治疗创造利基市场
- 批准号:
10276995 - 财政年份:2021
- 资助金额:
$ 17.63万 - 项目类别:
Creating a niche for engineered live biotherapeutics
为工程活生物治疗创造利基市场
- 批准号:
10427447 - 财政年份:2021
- 资助金额:
$ 17.63万 - 项目类别:
Creating a niche for engineered live biotherapeutics
为工程活生物治疗创造利基市场
- 批准号:
10622534 - 财政年份:2021
- 资助金额:
$ 17.63万 - 项目类别:
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