LIVE IMAGING OF BONE REGENERATION IN ZEBRAFISH
LIVE IMAGING OF BONE REGENERATION IN ZEBRAFISH
批准号:
10543896
负责人:
Stefano Di Talia
金额:
$6.74万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
2020
资助国家:
美国
项目状态:
未结题
起止时间:
2020-02-01 至 2025-01-31
关键词:
AdultAgeAmericanAutomobile DrivingBehaviorBiographyBiosensorBone DiseasesBone MatrixBone RegenerationCell ProliferationCell divisionCellsCessation of lifeChemicalsClinicalCompetenceComplementComplexComputer AnalysisData SetDaughterDermalEmbryoEpithelial CellsEventExtracellular Signal Regulated KinasesFGF12 geneFractureGene ExpressionGenesGeneticGenetic TranscriptionGoalsGrowthGrowth FactorHeterogeneityHypertrophyImageIndividualInjuryJawLabelLaboratoriesLifeLigandsLimb structureLinkMapsMediatingMessenger RNAMethodologyMethodsMitogensModelingMolecularMolecular GeneticsMonitorMorphogenesisNatural regenerationOsteoblastsOsteoclastsPathway interactionsPatternPharmacologyPopulationPrimordiumProcessProtein AnalysisPublishingRegenerative capacityRegulationRiskSignal TransductionSkeletal boneSkinStructureSystemTestingTissuesTransgenic OrganismsTraumaTravelWorkZebrafishbasebonebone imagingcell behaviorcraniofacial developmentexperimental studygenetic approachimaging modalityimaging platformimprovedin vivo imaginginsightlimb amputationlive cell imagingmathematical modelmembermigrationnovelprogramsregeneration potentialregenerative growthresponsesingle cell sequencingsocioeconomicsspatiotemporaltranscription factortranscriptome
中文摘要
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英文摘要
Abstract
Mammalian bone has the capacity throughout life to regenerate in response to fracture injury. However, there
is a ceiling for this regenerative potential, with hurdles to regeneration after a major trauma like limb
amputation. This has a significant socioeconomic impact, as it is estimated that at least one in two Americans
over age 50 is expected to have or be at risk of bone disease, and every year an estimated 1.5 million
individuals suffer a fracture due to bone disease. Recently, we have developed imaging methods to study how
osteoblasts drive bone regeneration in zebrafish, which display robust regeneration after major injury to bony
structures like their fins, scales, and jaws. Our goal is to exploit this regenerative capacity, new imaging
platforms we have created, and the molecular genetic approaches available in zebrafish to improve our ability
to understand and manipulate the regenerative capacity of bone. The goal of this proposal is to generate an in
toto map of the cellular and signaling events that regenerate patterned skeletal bone. Our experiments will test
the hypothesis that correct patterning of regenerating bone requires dynamic signaling events that control
osteoblast behaviors at individual and population levels. 1) We will use long-term live imaging, labeling with
photo-convertible proteins, and computational analysis to generate a detailed map of how cell proliferation,
hypertrophy and cellular flows, and interactions with neighboring tissues drive bone regeneration. 2) We will
use cutting edge biosensors, live imaging, computational approaches, and mathematical modeling to dissect
how traveling waves of chemical signals stimulate the growth of a regenerating osteoblast population. 3) We
will use transcriptome profiling approaches to derive further insights on the dynamics of growth factor signaling,
including single-cell sequencing-based approaches to link gene expression programs with osteoblast
behaviors. These experiments will define a novel quantitative framework for understanding how osteoblast
behaviors orchestrate bone regeneration.
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