New Computational Systems Biology Methods for Modeling Gene Regulatory Circuits
用于建模基因调控电路的新计算系统生物学方法
基本信息
- 批准号:10268260
- 负责人:
- 金额:$ 39.25万
- 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:2018-08-01 至 2023-07-31
- 项目状态:已结题
- 来源:
- 关键词:AddressAlgorithmsAutologousBasic ScienceBehaviorCell Differentiation processCellsCellular biologyChromosome MappingClinicalCollaborationsComplexComputational algorithmDataData AnalysesDecision MakingDevelopmental ProcessDiseaseGene ExpressionGenesGenomic approachGenomic medicineGenomicsHealthHumanInterventionKineticsLightLiteratureMachine LearningMaintenanceMalignant NeoplasmsMeasuresMethodsModelingNamesNonlinear DynamicsPublic HealthRegenerative MedicineRegulationRegulator GenesStatistical Data InterpretationSystemSystems BiologyTechnologyTestingTherapeuticTherapeutic Interventionalgorithm developmentbasecancer therapycombinatorialcomputer frameworkdesignexperimental studygenomic datahuman diseaseinterestmathematical modelnovel strategiesstem cell therapysuccesstooltumorigenesis
项目摘要
PROJECT SUMMARY/ABSTRACT
Cellular state transitions (i.e. from pluripotent to committed, replicative to quiescent, etc.) require the
coordinated regulation of thousands of genes. Therapeutically harnessing these transitions holds great
promise for human health;; for instance, autologous stem cell therapy has been successfully used in
regenerative medicine and cancer treatments, among others. While some of the key regulatory switches are
known, the field lacks a systems-level understanding of the genomic circuits that control these transitions,
information that is critical for informed clinical intervention. Here, we will develop an integrated computational
framework to identify core gene regulatory circuits from large gene networks and predict their dynamics and
regulatory functions without the need of detailed network kinetic parameters. Advances in genomics profiling
technology have enabled the mapping of gene regulatory networks, thus we now have the capacity to identify
combinatorial interactions among genes and the master regulators of state transitions. Some systems biology
approaches have simulated the dynamics of a gene regulatory circuit, but traditional methods suffer from two
key issues. First, there is no rational rule to choose an appropriate set of regulator genes in a large network to
model. Second, since it is hard to directly measure most network kinetic parameters from experiment,
modeling results are based on a set of guessed parameters that can be less than optimal, limiting the
application of mathematical modeling to large systems and the prediction power of systems biology. To
address these issues, we recently developed algorithm named random circuit perturbation (RACIPE). RACIPE
generates an ensemble of circuit models, each of which corresponds to a distinct set of random kinetic
parameters, and uniquely identifies robust features, such as clusters of stable gene expression states, by
statistical analysis. We will further enhance RACIPE algorithms for large systems and new data analysis tools
using machine learning. This approach will convert a traditional nonlinear dynamics problem into a data
analysis problem, an essential step for extending the application of gene circuit modeling to large systems. It
also provides a novel strategy to integrate top-down genomics approaches with bottom-up mathematical
modeling. The algorithms will be tested and refined using literature-based gene networks, public genomics
data, and data from collaboration, with a focus on cell differentiation in developmental processes and state
transitions in oncogenesis. Success of the project will result in a comprehensive toolkit that will unveil the gene
regulatory mechanism of cellular decision-making in any cell of interest. The algorithmic development is
expected to have a broad impact on not only basic research in systems biology but also shed light on
therapeutic intervention in genomic medicine.
项目摘要/摘要
细胞状态转变(即从多能到定型、复制到静止等)需要
数千个基因的协调调控。 利用这些转变进行治疗非常有效
对人类健康的承诺;例如,自体干细胞疗法已成功应用于
再生医学和癌症治疗等。 虽然一些关键的监管开关是
众所周知,该领域缺乏对控制这些转变的基因组回路的系统级理解,
对于知情临床干预至关重要的信息。 在这里,我们将开发一个集成的计算
框架从大型基因网络中识别核心基因调控回路并预测其动态和
调节功能,无需详细的网络动力学参数。 基因组学分析的进展
技术已经能够绘制基因调控网络的图谱,因此我们现在有能力识别
基因和状态转变的主调节器之间的组合相互作用。 一些系统生物学
方法模拟了基因调节回路的动态,但传统方法存在两个问题
关键问题。 首先,没有合理的规则可以在大型网络中选择一组合适的调节基因
模型。 其次,由于很难通过实验直接测量大多数网络动力学参数,
建模结果基于一组猜测的参数,这些参数可能不是最佳的,从而限制了
数学建模在大型系统中的应用以及系统生物学的预测能力。 到
为了解决这些问题,我们最近开发了一种名为随机电路扰动(RACIPE)的算法。 拉西佩
生成一组电路模型,每个模型对应于一组不同的随机动力学
参数,并独特地识别稳健的特征,例如稳定基因表达状态的簇,通过
统计分析。 我们将进一步增强大型系统的 RACIPE 算法和新的数据分析工具
使用机器学习。 这种方法将传统的非线性动力学问题转换为数据
分析问题,是将基因电路建模的应用扩展到大型系统的必要步骤。 它
还提供了一种新颖的策略,将自上而下的基因组学方法与自下而上的数学方法相结合
造型。 这些算法将使用基于文献的基因网络、公共基因组学进行测试和完善
数据和合作数据,重点关注发育过程和状态中的细胞分化
肿瘤发生的转变。 该项目的成功将产生一个全面的工具包,该工具包将揭开基因的面纱
任何感兴趣的细胞中细胞决策的调节机制。 算法开发是
预计不仅会对系统生物学的基础研究产生广泛的影响,而且还会阐明
基因组医学的治疗干预。
项目成果
期刊论文数量(0)
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Mingyang Lu其他文献
Mingyang Lu的其他文献
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{{ truncateString('Mingyang Lu', 18)}}的其他基金
New Computational Systems Biology Methods for Modeling Gene Regulatory Circuits
用于建模基因调控电路的新计算系统生物学方法
- 批准号:
10246751 - 财政年份:2018
- 资助金额:
$ 39.25万 - 项目类别:
New Computational Systems Biology Methods for Modeling Gene Regulatory Circuits
用于建模基因调控电路的新计算系统生物学方法
- 批准号:
9752643 - 财政年份:2018
- 资助金额:
$ 39.25万 - 项目类别:
New Computational Systems Biology Methods for Modeling Gene Regulatory Circuits
用于建模基因调控电路的新计算系统生物学方法
- 批准号:
10455602 - 财政年份:2018
- 资助金额:
$ 39.25万 - 项目类别:
New Computational Systems Biology Methods for Modeling Gene Regulatory Circuits
用于建模基因调控电路的新计算系统生物学方法
- 批准号:
9574761 - 财政年份:2018
- 资助金额:
$ 39.25万 - 项目类别:
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