EZH2 inhibitors as endoprosthetic device coatings that induce osteogenesis and promote implant osseointegration
EZH2 抑制剂作为内置假体装置涂层,可诱导成骨并促进种植体骨整合
基本信息
- 批准号:9464548
- 负责人:
- 金额:$ 22.49万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-09-13 至 2019-08-31
- 项目状态:已结题
- 来源:
- 关键词:AcidityAdipocytesAdipose tissueAntineoplastic AgentsBiochemicalBiological AssayBiological MarkersBiomimeticsBlood VesselsBone DiseasesBone GrowthBone MatrixCatalytic DomainChondrocytesClinicComplexCultured CellsDental ImplantsDevelopmentDevicesDimensionsDrug DesignEZH2 geneEnhancersEnzymesEpigenetic ProcessExposure toFeasibility StudiesFracture HealingGenesGoalsGrowthHomologous GeneHumanHydroxyapatitesImpairmentImplantIn VitroJoint repairKineticsKnowledgeLaboratoriesLeadLigandsLimb structureLongevityMeasuresMesenchymal DifferentiationMesenchymal Stem CellsModelingModificationMyelosuppressionOperative Surgical ProceduresOralOrthopedicsOsseointegrationOsteoblastsOsteogenesisOsteopeniaOsteoporosisPatientsPenetrationPharmaceutical PreparationsPhasePlayPolycombPrecipitationPreparationProceduresPropertyReplacement ArthroplastyResearchResearch Project GrantsRiskSafetySignal PathwaySignal TransductionSkeletal DevelopmentSmall Business Innovation Research GrantSolubilityStaining methodStainsStromal CellsTherapeuticTissuesTitaniumToxic effectWorkaging populationalkalinityanalogbasebeta cateninbonecancer therapycost effectivedesigndrug candidatedrug discoveryexperiencehistone methyltransferaseimplant coatingimprovedin vivoinhibitor/antagonistinterestknock-downnovelnovel therapeutic interventionosteogenicosteosarcomapreventprogramsscaffoldsmall moleculesmall molecule inhibitorsurface coating
项目摘要
Project Summary/Abstract
With an aging population and increased life span, the number of patients requiring reconstructive joint
surgeries or joint replacements continues to increase. Many patients undergoing arthroplasty procedures
suffer from bone disorders such as osteoporosis, severe arthrosis or osteopenia, with a bony matrix that
impedes firm anchoring of implants to existing bone. This results in poor implant osseointegration and aseptic
loosening, and requires revision surgeries in many patients. The need and opportunity exists for new
therapeutic strategies that improve bone-implant contact and device osseointegration.
The objective of the proposed project is to discover small molecule inhibitors of the histone methyltransferase
enhancer of zeste homolog 2 (EZH2) that can be incorporated in the surface coating of a model titanium
device substrate. Upon release from the substrate, these compounds will stimulate osteogenic differentiation
of mesenchymal stem cells (MSCs) at the device/tissue interface, promoting bone growth and device
osseointegration. Dr. Andre van Wijnen of Mayo Clinic and others have demonstrated that EZH2 inhibitors
stimulate bone formation by decreasing epigenetic inhibition of the Wnt/β-catenin signaling pathway. The
research described in the current proposal will demonstrate that EZH2 inhibitors, when incorporated into
hydroxyapatite surface coatings of titanium disks, will enhance osteogenic differentiation of human MSCs
cultured on the disks as measured by relevant biomarkers and immunohistochemical staining.
Successful completion of this Phase I SBIR feasibility study will form the basis for a program directed at the
development of a drug/device combination product that will greatly enhance implant osseointegration, reduce
the need for revision surgeries, and be convenient and cost effective with respect to manufacturing and
preparations required by surgical staff. Relative to orally or parenterally administered compounds, local
delivery of bone pro-anabolic EZH2 inhibitors at the device/tissue interface will minimize systemic exposure
and toxicity, specifically myelosuppression observed for EZH2 inhibitors currently in development for the
treatment of cancer.
The project leverages the complementary knowledge and capabilities of Numerate, Inc. and Dr. van Wijnen’s
laboratory. Dr. van Wijnen has extensively characterized the effects of EZH2 inhibition on bone formation, and
has significant experience with assays that assess growth and integration of MSCs with titanium device
substrates. Numerate’s team is experienced in small molecule drug discovery and development, and will apply
its ligand-based, AI-driven small molecule drug design platform to the design and optimization of EZH2
inhibitors for use in coated orthopedic implants.
项目总结/摘要
随着人口老龄化和寿命的延长,需要重建关节的患者数量
手术或关节置换持续增加。 许多接受关节成形术的患者
患有骨疾病,如骨质疏松症、严重关节病或骨质减少,骨基质
阻碍种植体牢固锚定到现有骨上。这导致种植体骨结合不良,
松动,许多患者需要翻修手术。
改善骨-种植体接触和器械骨整合的治疗策略。
该项目的目标是发现组蛋白甲基转移酶的小分子抑制剂
zeste同源物2(EZH 2)的增强剂,其可并入模型钛的表面涂层中
从基质释放后,这些化合物将刺激成骨分化
间充质干细胞(MSC)在设备/组织界面,促进骨生长和设备
骨整合 马约诊所的Andre货车Wijnen博士和其他人已经证明EZH 2抑制剂
通过减少Wnt/β-catenin信号通路的表观遗传抑制来刺激骨形成。 的
本提案中描述的研究将证明,EZH 2抑制剂,当被纳入
羟基磷灰石表面涂层钛盘,将增强人MSC的成骨分化
通过相关生物标记和免疫组织化学染色测量在盘上培养的细胞。
成功完成第一阶段SBIR可行性研究将为针对以下目标的计划奠定基础:
开发一种药物/器械组合产品,该产品将极大地增强植入物骨整合,
翻修手术的需要,并且在制造方面是方便和成本有效的,
手术人员所需的准备工作。 相对于口服或胃肠外给药的化合物,局部
在器械/组织界面输送骨促骨合成代谢EZH 2抑制剂将使全身暴露最小化
和毒性,特别是骨髓抑制,目前正在开发的EZH 2抑制剂,
癌症的治疗。
该项目利用Numerate公司和货车Wijnen博士的互补知识和能力,
货车Wijnen博士已经广泛表征了EZH 2抑制对骨形成的影响,并且
在评估MSC与钛器械的生长和整合的试验方面具有丰富的经验
Numerate的团队在小分子药物的发现和开发方面经验丰富,
其基于配体的、人工智能驱动的小分子药物设计平台用于EZH 2的设计和优化,
用于涂覆的整形外科植入物的抑制剂。
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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Uwe Klein其他文献
Uwe Klein的其他文献
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{{ item.author }}
{{ truncateString('Uwe Klein', 18)}}的其他基金
Peripherally restricted α2/δ-1 subunit ligands that modulate CaV channel gating as novel antiarrhythmic drugs
外周限制的α2/β-1亚基配体作为新型抗心律失常药物调节CaV通道门控
- 批准号:
9406676 - 财政年份:2017
- 资助金额:
$ 22.49万 - 项目类别:
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