Administrative supplement - Equipment
Administrative supplement - Equipment
批准号:
10378986
负责人:
Flordeliza S Villanueva
金额:
$3.57万
依托单位国家:
美国
项目类别:
财政年份:
2018
资助国家:
美国
项目状态:
已结题
起止时间:
2018-09-20 至 2021-06-30
关键词:
AcousticsAddressAdministrative SupplementAutomobile DrivingBehaviorBiological Response Modifier TherapyBiologyBlood VesselsCardiovascular DiseasesCell membraneCellsConfocal MicroscopyContractsCustomDNADevelopmentDiseaseEndothelial CellsEndotheliumEquipmentEventExtravasationGene DeliveryIn VitroIntravenousKnowledgeLifeMalignant NeoplasmsMeasuresMechanicsMediatingMethodsMicrobubblesMicrocirculationMolecularNucleic AcidsOpticsPathologicPathway interactionsPermeabilityPhysicsPhysiologyPropertyProteinsResearchSavingsSignal TransductionSiteSmall Interfering RNASpeedTechnologyTestingTherapeuticTimeTranslationsUltrasonic TransducerUltrasonographyexperimental studygene therapyimage guidedin vivoinsightmacromoleculemultidisciplinarynucleic acid deliverynucleic acid-based therapeuticsreal-time imagesresponsesoundtargeted deliveryvibration
中文摘要
越来越多的人对支撑疾病治疗的主要分子机制的了解正在推动一种强大的、势在必行的机制来实现这一目标。
一些药物,如核酸,致力于抑制病理性蛋白质的表达,以此作为迄今为止的救命和治疗手段。
无可救药的疾病。尽管有许多有希望的进展,但在提供细胞膜的战略方面仍有一些有希望的进展。
这意味着核酸,如siRNA,可以刺激致病细胞,是一种非常安全的方法,也是一种高效的靶向治疗方法。
这些药物的给药途径仍然难以捉摸。对于使用血管给药方法的基因治疗来说,一个重要的障碍是。
为了绕过血管内皮细胞屏障,我们一直在开发一种独特的血管技术,使用静脉注射。
核酸负载的微泡(MB),这些微泡经常被触发以空化由美国超声波公司(US)进行的扩张和收缩(Expansion And Constraint)。
导致相邻细胞膜的一过性透过性改变,以及药物携带的治疗药物的释放能力。
MBS。这种特定于现场的、非侵入性的医疗交付方法的潜在价值是非常不同寻常的,而且更是如此,因为它是MBS。
而美国的医疗传感器还将为放射治疗的同时、实时和图像引导的医疗导航提供更多的能力。尽管如此,
它的承诺,以及超声波触发的超声空化治疗(UTMC)的潜在疗效的潜在机制,是一种有效的交付方式。
人们对平台的了解很少。如果没有足够的基础知识,我们就不会有足够的基础知识来确保安全和安全
有效的生物治疗性翻译服务是由UTMC实施的,而其最终的床边翻译服务几乎是不可能的。
假设MBS在微循环中出现空化,可能会给内皮细胞带来非致命性的机械血管扰动。
细胞,导致一些信号转导事件,最终导致内皮细胞屏障和高通透性。我们建议进行体外实验。
研究需要系统地研究机械性的信号通路,然后是体内实验,然后是对UTMC的研究。
内皮细胞屏障的影响是实时的,并解决了三个具体的目标:(1)确定其实施的机制。
这使得UTMC增加了内皮细胞的屏障和渗透性。我们将继续使用具有内皮细胞的跨孔涂层材料。
他们操纵候选血管通路,以检验假设,即UTMC诱导的钙离子内流增加血管内皮细胞。
渗透率。我们将使用多色共焦显微镜对随之而来的细胞免疫事件进行光学测量,从而实现。
将屏障功能与细胞反应相关;;(2)决定了体内细胞与MB和空化之间的关系。
大分子siRNA(SiRNA)跨内皮细胞转运的行为。我们将继续使用一种新的定制超高。
SPEED和相机需要在活体中可视化细胞-美国-MB在微循环中的振动,以进一步验证这一假说。
汽蚀会导致可量化的机械事故,然后可能会推导出管理UTMC调解的物理事故的物理原理。
高渗透性;;实验(3):在实验过程中,将确定携带siRNA的单个核细胞的外渗途径和细胞命运。
UTMC正在进行体内试验。我们将继续使用Cremaster微循环技术中的活体内高速多色激光共聚焦显微镜技术。
想象一下内皮细胞的屏障和属性,以及装载了siRNA的BMB的命运。我们的多学科研究团队团结在一起。
物理学/声学与生物学/生理学相结合,以更深入地了解基本的物理机制和细胞机制。
根本原因是UTMC推动了基因的传递。最终,我们的研究团队将为基因优化定义一个合理的基础。
其中有一项令人瞩目的技术创新和加速,将核酸和治疗学的翻译技术应用到了我们的床边。
英文摘要
Increasing knowledge of the molecular underpinnings of disease is driving a powerful imperative to deliver
agents, such as nucleic acids, to silence expression of pathologic proteins for life-saving treatment of heretofore
hopeless illnesses. Although there are promising developments in strategies to deliver cell membrane
impermeant nucleic acids, such as siRNA, to disease-causing cells, a safe and efficient method for targeted
delivery of these agents has remained elusive. A significant hurdle for gene therapies using vascular delivery is
to circumvent the endothelial barrier. We have been developing a unique technology using intravenously injected
nucleic acid-loaded microbubbles (MB) which are triggered to cavitate (expand and contract) by ultrasound (US),
causing transient permeabilization of the adjacent cell membrane and delivery of the therapeutic carried by the
MBs. The potential of this site-specific, non-invasive delivery method is extraordinary, more so because the MBs
and US transducer also provide capability for simultaneous real time image-guided navigation of therapy. Despite
its promise, the mechanisms underlying the efficacy of ultrasound-triggered MB cavitation (UTMC) as a delivery
platform are poorly understood. Without a sound knowledge of the fundamental mechanisms by which safe and
effective biotherapeutic delivery is effected by UTMC, its ultimate bedside translation is impossible. We
hypothesize that MBs cavitating in the microcirculation impart non-lethal mechanical perturbations on endothelial
cells, leading to signaling events that culminate in endothelial barrier hyperpermeability. We propose in vitro
studies to systematically interrogate mechanistic pathways, followed by in vivo experiments to investigate UTMC
endothelial barrier effects in real time, addressing three Specific Aims: (1) Determine the mechanisms by
which UTMC increases endothelial barrier permeability. We will use transwells coated with endothelial cells
and manipulate candidate pathways to test the hypothesis that UTMC-induced Ca2+ influx increases endothelial
permeability. We will optically measure attendant cellular events using multicolor confocal microscopy, thus
correlating barrier function to cell response;; (2) Determine the relationship between in vivo MB cavitation
behaviors and transendothelial transport of macromolecules (siRNA). We will use a custom ultra-high
speed camera to visualize in vivo US-MB vibrations in the microcirculation to test the hypothesis that MB
cavitation causes quantifiable mechanical events, then derive physical principles governing UTMC-mediated
hyperpermeability;; (3): Determine extravasation pathways and cellular fate of siRNA-loaded MBs during
UTMC in vivo. We will use intravital high-speed multicolor confocal microscopy in cremaster microcirculation to
visualize endothelial barrier properties and siRNA-loaded MB fate. Our multi-disciplinary team unites
physics/acoustics with biology/physiology to derive insights into fundamental physical and cellular mechanisms
underlying UTMC-facilitated gene delivery. Ultimately, our research will define a rational basis for optimization
of this remarkable technology and accelerate the translation of nucleic acid therapeutics to the bedside.
期刊论文(4)
专著(0)
科研奖励(0)
会议论文
Complex Highways on the Translational Roadmap for Therapeutic Ultrasound-Targeted Microbubble Cavitation: Where Are We Now?
超声靶向微泡空化治疗转化路线图上的复杂高速公路:我们现在在哪里?
DOI:
10.1016/j.jcmg.2019.08.010
发表时间:
2020
期刊:
JACC. Cardiovascular imaging
影响因子:
--
作者:
[Villanueva,FlordelizaS, Chen,Xucai]
通讯作者:
Chen,Xucai
DOI:
10.1038/s41598-023-50203-3
发表时间:
2024-01-22
期刊:
Scientific reports
影响因子:
4.6
作者:
[]
通讯作者:
Ultrafast Microscopy Imaging of Acoustic Cluster Therapy Bubbles: Activation and Oscillation.
声簇治疗气泡的超快显微成像:激活和振荡。
DOI:
10.1016/j.ultrasmedbio.2022.05.009
发表时间:
2022
期刊:
Ultrasound in medicine & biology
影响因子:
2.9
作者:
[vanWamel,Annemieke, Mühlenpfordt,Melina, Hansen,Rune, Healey,Andrew, Villanueva,FlordelizaS, Kotopoulis,Spiros, Davies,CatharinadeLange, Chen,Xucai]
通讯作者:
Chen,Xucai
Biological and Physical Mechanisms of ultrasound/microbubble-mediated therapeutic gene delivery across the endothelial barrier
-
批准号:10220968
-
项目类别:
-
资助金额:$59.9万
-
财政年份:2018
-
负责人:Flordeliza S Villanueva
-
依托单位:
Biological and Physical Mechanisms of ultrasound/microbubble-mediated therapeutic gene delivery across the endothelial barrier
-
批准号:9980415
-
项目类别:
-
资助金额:$63.74万
-
财政年份:2018
-
负责人:Flordeliza S Villanueva
-
依托单位:
Training Program in Imaging Sciences in Translational Cardiovascular Research
-
批准号:10382469
-
项目类别:
-
资助金额:$52.05万
-
财政年份:2016
-
负责人:Flordeliza S Villanueva
-
依托单位:
Training Program in Imaging Sciences in Translational Cardiovascular Research
-
批准号:10269077
-
项目类别:
-
资助金额:$50.32万
-
财政年份:2016
-
负责人:Flordeliza S Villanueva
-
依托单位:
Training Program in Imaging Sciences in Translational Cardiovascular Research
-
批准号:10633063
-
项目类别:
-
资助金额:$34.48万
-
财政年份:2016
-
负责人:Flordeliza S Villanueva
-
依托单位:
Training Program in Imaging Sciences in Translational Cardiovascular Research
-
批准号:9264011
-
项目类别:
-
资助金额:$31.9万
-
财政年份:2016
-
负责人:Flordeliza S Villanueva
-
依托单位:
Ultrasound-activated microbubbles for targeted siRNA delivery to tumor
-
批准号:8664844
-
项目类别:
-
资助金额:$57.3万
-
财政年份:2012
-
负责人:Flordeliza S Villanueva
-
依托单位:
Targeted theranostic microbubble vectors for transcription factor decoy delivery
-
批准号:8528523
-
项目类别:
-
资助金额:$18.72万
-
财政年份:2012
-
负责人:Flordeliza S Villanueva
-
依托单位:
Ultrasound-activated microbubbles for targeted siRNA delivery to tumor
-
批准号:8501449
-
项目类别:
-
资助金额:$53.4万
-
财政年份:2012
-
负责人:Flordeliza S Villanueva
-
依托单位:
Ultrasound-activated microbubbles for targeted siRNA delivery to tumor
-
批准号:8857130
-
项目类别:
-
资助金额:$57.48万
-
财政年份:2012
-
负责人:Flordeliza S Villanueva
-
依托单位:
Ultrasound-activated microbubbles for targeted siRNA delivery to tumor
-
批准号:8370881
-
项目类别:
-
资助金额:$57.76万
-
财政年份:2012
-
负责人:Flordeliza S Villanueva
-
依托单位:
Targeted theranostic microbubble vectors for transcription factor decoy delivery
-
批准号:8281002
-
项目类别:
-
资助金额:$16.58万
-
财政年份:2012
-
负责人:Flordeliza S Villanueva
-
依托单位:
Development of an In Vivo Stem Cell Tracking Method Using Ultrasound Imaging
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批准号:7936172
-
项目类别:
-
资助金额:$35.0万
-
财政年份:2009
-
负责人:Flordeliza S Villanueva
-
依托单位:
Development of an In Vivo Stem Cell Tracking Method Using Ultrasound Imaging
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批准号:7821948
-
项目类别:
-
资助金额:$50.0万
-
财政年份:2009
-
负责人:Flordeliza S Villanueva
-
依托单位:
Targeted Ultrasound Imaging of Angiogenic Receptors
-
批准号:6893339
-
项目类别:
-
资助金额:$36.76万
-
财政年份:2004
-
负责人:Flordeliza S Villanueva
-
依托单位:
Targeted Ultrasound Imaging of Angiogenic Receptors
-
批准号:7238640
-
项目类别:
-
资助金额:$34.31万
-
财政年份:2004
-
负责人:Flordeliza S Villanueva
-
依托单位:
Targeted Ultrasound Imaging of Angiogenic Receptors
-
批准号:7078588
-
项目类别:
-
资助金额:$34.99万
-
财政年份:2004
-
负责人:Flordeliza S Villanueva
-
依托单位:
Targeted Ultrasound Imaging of Angiogenic Receptors
-
批准号:6814078
-
项目类别:
-
资助金额:$36.77万
-
财政年份:2004
-
负责人:Flordeliza S Villanueva
-
依托单位:
ECHOCARDIOGRAPHIC STUDY OF THE CORONARY MICROVASCULATURE
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批准号:6183324
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项目类别:
-
资助金额:$10.5万
-
财政年份:1997
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负责人:Flordeliza S Villanueva
-
依托单位:
ECHOCARDIOGRAPHIC STUDY OF THE CORONARY MICROVASCULATURE
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批准号:2735403
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项目类别:
-
资助金额:$10.5万
-
财政年份:1997
-
负责人:Flordeliza S Villanueva
-
依托单位:
海外基金