Novel neurovascular protective mechanisms of PEDF after subarachnoid hemorrhage
PEDF对蛛网膜下腔出血后神经血管保护的新机制
基本信息
- 批准号:10358153
- 负责人:
- 金额:$ 40.03万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-12-01 至 2026-11-30
- 项目状态:未结题
- 来源:
- 关键词:AcuteAffinityAgeAneurysmal Subarachnoid HemorrhagesApoptosisApoptoticAttenuatedBindingBlood - brain barrier anatomyBrainBrain EdemaBrain InjuriesBrain hemorrhageCardiac MyocytesCell DeathCell SurvivalCerebrovascular SpasmClinicalDataDeteriorationDiseaseEventGenesGlycoproteinsGoalsHomeostasisIn VitroInflammatoryInjuryIntracranial AneurysmIntracranial HypertensionIntranasal AdministrationIschemiaLinkLipaseMaintenanceMalignant - descriptorMediatingMembraneModelingMolecularMorbidity - disease rateNervous System PhysiologyNeurologicNeuronsOphthalmologyOutcomePathologyPathway interactionsPatientsPerforationRattusRecombinantsResearchRodentRodent ModelRoleRuptureSerine Proteinase InhibitorsSignal PathwayStrokeSubarachnoid HemorrhageSurvivorsTherapeuticTissuesTransient Cerebral IschemiaVascular Permeabilitiesblood-brain barrier disruptionblood-brain barrier permeabilizationcell typecerebral ischemic injuryclinical translationgranule cellhuman fetal retinal pigment epithelial cellimprovedimproved outcomeinsightknock-downmacular edemamembermortalityneurobehaviorneuron apoptosisneurovascularnew therapeutic targetnoveloverexpressionpigment epithelium-derived factorpigment epithelium-derived factor receptorprotective effectprotective efficacyprotein expressionsextherapeutic targettranscription factortreatment strategy
项目摘要
ABSTRACT
Aneurysmal subarachnoid hemorrhage (SAH) is a devastating type of hemorrhagic stroke with 50%
mortality and long-term morbidity in surviving patients.1-4 Recently, the focus of SAH research has been shifted
to early brain injury (EBI) which comprises the acute initial events after SAH, such as elevation of intracranial
pressure (ICP), global ischemia, blood brain barrier (BBB) disruption, brain edema formation, neuronal
apoptosis, activation of inflammatory and cell death pathways that contribute to delayed neurological
deterioration, leading to mortality and morbidity after SAH.5-8
Pigment-epithelium derived factor (PEDF) is a pluripotent glycoprotein expressed in various tissues
including the brain.9,14 PEDF reduced apoptosis in various types of cells including neurons,14,18 osteoblasts24
and cardiomyocytes.22 Likewise, PEDF reduced vascular permeability and macular edema in ophthalmologic
pathologies.37,41 There have been relatively limited studies on the role of PEDF following stroke. PEDF has
been shown to have protective effects on neuronal cell survival in vitro14,18 and attenuated cerebral ischemic
injury in rodent models.19-21 PEDF reduced brain edema following cold-induced injury and transient cerebral
ischemia in rodent models.20,21,42 However, the role of PEDF following SAH has not been explored.
Furthermore, the neurovascular protective mechanisms of PEDF have not been studied. This proposal will
elucidate the neurovascular protective mechanisms of PEDF through anti-apoptotic and BBB
protective pathways in a rodent endovascular perforation SAH model. We will sequentially determine the
role of endogenous PEDF and then evaluate the therapeutic benefits of intranasal administration of
recombinant PEDF against early brain injury after SAH, specifically neuronal apoptosis and BBB disruption will
be evaluated. Additionally, we will elucidate the downstream signaling pathways of PEDF receptor (PEDF-R)
that contribute to anti-apoptotic and BBB protective mechanisms of PEDF. We propose that PEDF will activate
PEDF-R/NPD1/Erk1/2-cRel pathway that reduces neuronal apoptosis with intranasal recombinant PEDF
administration. Also, PEDF activation of the PEDF-R/Nrf2/HO-1 pathway will contribute to BBB stabilization
after SAH. We will knockdown PEDF receptor and inhibit the pathways to elucidate the mechanism of PEDF-R
signaling pathway mediated protection.
Overall, this proposal will provide novel insights into neurovascular protective mechanisms of PEDF.
Additionally, this proposal will establish the protective efficacy of intranasal administration of PEDF as a
potential therapeutic target against early brain injury after SAH.
抽象的
动脉瘤性蛛网膜下腔出血 (SAH) 是一种破坏性的出血性中风,50%
幸存患者的死亡率和长期发病率。1-4 最近,SAH 研究的重点已经转移
早期脑损伤 (EBI),包括 SAH 后的急性初始事件,例如颅内压升高
压力(ICP)、全身缺血、血脑屏障(BBB)破坏、脑水肿形成、神经元
细胞凋亡、炎症和细胞死亡途径的激活,导致神经系统延迟
恶化,导致 SAH.5-8 后的死亡率和发病率
色素上皮衍生因子(PEDF)是一种在多种组织中表达的多能糖蛋白
9,14 PEDF 减少各种类型细胞的凋亡,包括神经元、14,18 成骨细胞24
22 同样,PEDF 可降低眼科疾病中的血管通透性和黄斑水肿
病理学。37,41 关于 PEDF 在中风后的作用的研究相对有限。
已被证明对体外神经细胞存活具有保护作用14,18 并减轻脑缺血
啮齿动物模型中的损伤。19-21 PEDF 可减轻冷损伤和短暂性脑损伤后的脑水肿
啮齿动物模型中的缺血。20,21,42 然而,SAH 后 PEDF 的作用尚未被探索。
此外,PEDF的神经血管保护机制尚未被研究。
阐明PEDF通过抗凋亡和BBB的神经血管保护机制
我们将依次确定啮齿动物血管内穿孔 SAH 模型中的保护途径。
内源性 PEDF 的作用,然后评估鼻内给药的治疗效果
重组 PEDF 可以对抗 SAH 后的早期脑损伤,特别是神经元凋亡和 BBB 破坏
此外,我们将阐明 PEDF 受体 (PEDF-R) 的下游信号通路。
有助于 PEDF 的抗凋亡和 BBB 保护机制。我们建议 PEDF 将激活
PEDF-R/NPD1/Erk1/2-cRel 通路通过鼻内重组 PEDF 减少神经元凋亡
此外,PEDF 激活 PEDF-R/Nrf2/HO-1 途径将有助于 BBB 稳定。
SAH后我们将敲低PEDF受体并抑制通路来阐明PEDF-R的机制。
信号通路介导的保护。
总体而言,该提案将为 PEDF 的神经血管保护机制提供新的见解。
此外,该提案将确定 PEDF 鼻内给药的保护功效
SAH 后早期脑损伤的潜在治疗靶点。
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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John H Zhang其他文献
Hypoxia Induces Autophagic Cell Death through Hypoxia-Inducible Factor 1 alpha in Microglia
缺氧通过小胶质细胞缺氧诱导因子 1 α 诱导自噬细胞死亡
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:3.7
- 作者:
Tian-zhi Zhao;Yong-jie Zou;John H Zhang;Hua Feng - 通讯作者:
Hua Feng
Targeting oxidative stress and inflammatory response for blood-brain barrier protection in intracerebral hemorrhage
针对脑出血血脑屏障保护的氧化应激和炎症反应
- DOI:
10.1089/ars.2021.0072 - 发表时间:
2022 - 期刊:
- 影响因子:6.6
- 作者:
Shengpan Chen;Lingzhi Li;Chao Peng;Chunjing Bian;Pinar Eser Ocak;John H Zhang;Yong Yang;Dong Zhou;Guangzhong Chen;Yumin Luo - 通讯作者:
Yumin Luo
Application of medical gases in the field of neurobiology
医用气体在神经生物学领域的应用
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:2.9
- 作者:
Wenwu Liu;N. Khatibi;Aishwarya Sridharan;John H Zhang - 通讯作者:
John H Zhang
Gas6 Promotes Microglia Eferocytosis and Suppresses Infammation Through Activating Axl/Rac1 Signaling in Subarachnoid Hemorrhage Mice
Gas6 通过激活蛛网膜下腔出血小鼠中的 Axl/Rac1 信号传导促进小胶质细胞胞质增多并抑制炎症
- DOI:
- 发表时间:
- 期刊:
- 影响因子:6.9
- 作者:
Junjia Tang;Yichao Jin;Feng Jia;Tao Lv;Anatol Manaenko;Lin-Feng Zhang;Zeyu Zhang;Xin Qi;Yajun Xue;Bin Zhao;Xiaohua Zhang;John H Zhang;Jianfei Lu;Qin Hu - 通讯作者:
Qin Hu
Exercise-enhanced IGF1R sumoylation-induced nuclear translocation decreases neuroinflammation in alzheimer's mice.
运动增强的 IGF1R 素化诱导的核转位可减少阿尔茨海默氏症小鼠的神经炎症。
- DOI:
10.1016/j.jare.2024.03.025 - 发表时间:
2024-03-01 - 期刊:
- 影响因子:0
- 作者:
Yisheng Chen;Xiaofeng Chen;Zhiwen Luo;Xueran Kang;Yunshen Ge;Renwen Wan;Qian Wang;Zhihua Han;Fangqi Li;Zhongcheng Fan;Yuchun Xie;Beijie Qi;Xintao Zhang;Zhenwei Yang;John H Zhang;Danping Liu;Yuzhen Xu;Dongyan Wu;Shiyi Chen - 通讯作者:
Shiyi Chen
John H Zhang的其他文献
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{{ truncateString('John H Zhang', 18)}}的其他基金
The protective function of blood-borne monocytes/macrophages after delayed recanalization in a permanent MCAO rodent model
永久性 MCAO 啮齿动物模型延迟再通后血源性单核细胞/巨噬细胞的保护功能
- 批准号:
10806832 - 财政年份:2023
- 资助金额:
$ 40.03万 - 项目类别:
Novel neurovascular protective mechanisms of PEDF after subarachnoid hemorrhage
PEDF对蛛网膜下腔出血后神经血管保护的新机制
- 批准号:
10525250 - 财政年份:2021
- 资助金额:
$ 40.03万 - 项目类别:
ER stress and neonatal hypoxia ischemia encephalopathy
内质网应激与新生儿缺氧缺血性脑病
- 批准号:
10304130 - 财政年份:2017
- 资助金额:
$ 40.03万 - 项目类别:
Cerebrospinal Fluid Dynamics in Posthemorrhagic Hydrocephalus in Neonates
新生儿出血后脑积水的脑脊液动力学
- 批准号:
10213849 - 财政年份:2017
- 资助金额:
$ 40.03万 - 项目类别:
ER stress and neonatal hypoxia ischemia encephalopathy
内质网应激与新生儿缺氧缺血性脑病
- 批准号:
10059275 - 财政年份:2017
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Harnessing Endogenous Neuroprotection Following ICH
利用 ICH 后的内源性神经保护
- 批准号:
9233211 - 财政年份:2016
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$ 40.03万 - 项目类别:
Harnessing Endogenous Neuroprotection Following ICH
利用 ICH 后的内源性神经保护
- 批准号:
9113729 - 财政年份:2016
- 资助金额:
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