Midlife Obesity, Neurovascular Senescence and Cognitive Decline

中年肥胖、神经血管衰老和认知能力下降

基本信息

批准号：
10458047
负责人：
Stefano Tarantini
金额：
$ 12.02万
依托单位：
UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR
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：
2021-08-01 至 2026-07-31
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10458047
关键词：
Abbreviations Address Aging Alzheimer&apos s disease related dementia American Astrocytes Attenuated Biochemistry Biometry Blood - brain barrier anatomy Blood capillaries Brain Cell Aging Cells Cerebrovascular Circulation Cerebrovascular system Cerebrum Chimeric Proteins Cognition Cognitive aging Cognitive deficits Complex Confocal Microscopy DNA Damage Data Dementia Development Dietary Intervention Doctor of Philosophy Endothelial Cells Endothelium Ensure Environment Flow Cytometry Functional Magnetic Resonance Imaging Functional disorder Funding Ganciclovir Geroscience Goals Grant Health High Fat Diet Homeostasis Hyperemia Image Imaging Techniques Impaired cognition Impairment Intervention Laboratory Research Laser Speckle Imaging Lead Life Link Magnetic Resonance Imaging Maintenance Mediating Mentors Methods Microcirculation Microglia Modality Modeling Molecular Biology Mus Muscle Cells National Institute of General Medical Sciences Neurons Nutritional Obese Mice Obesity Obesity Epidemic Oklahoma Outcome Pathogenesis Pathway interactions Pericytes Phenotype Play Population Publishing Radiation therapy Regulation Reporter Research Research Activity Research Personnel Resources Role Shock Techniques Testing Therapeutic Intervention Training Training Activity United States United States National Institutes of Health Universities Vascular Cognitive Impairment Vascular Diseases Vascular blood supply Work age related aging brain base blood-brain barrier disruption blood-brain barrier function career development cell type cerebrovascular cognitive benefits cognitive function cognitive performance data integration density endothelial dysfunction epidemiology study experimental study feeding genetic manipulation hemodynamics human old age (65+)improved intravital imaging lifestyle intervention middle age mouse model multiphoton imaging network architecture neuroinflammation neurovascular neurovascular coupling neurovascular unit novel nutrition preservation professor programs red fluorescent protein response senescence skills success transcriptomics two-photon vascular cognitive impairment and dementia

项目摘要

Stefano Tarantini, PhD, is a junior aging researcher whose overarching goal is to develop an independent research program to understand and apply nutritional lifestyle interventions to the field of cerebrovascular aging to ameliorate age-related vascular cognitive impairment and dementias (VCID). To achieve this, the following K01 proposal aims to further Dr. Tarantini's training to enable him to explore the role of midlife obesity on neurovascular senescence as it relates to the development of vascular cognitive impairment and related dementias. Candidate: Dr. Tarantini is an Assistant Professor in the Dept. of Biochemistry and Molecular Biology at the University of Oklahoma HSC. This K01 proposal perfectly builds on his previous training and extends his research in a logical direction that is becoming growingly relevant in the field of cognitive aging. This proposal identifies 5 training goals: 1) Acquire novel training in the field of nutrition; 2) Receive training in data integration, biostatistics, single-cell transcriptomics, and analysis; 3) training in advanced intra-vital imaging techniques; 4) Improve skills in magnetic resonance imaging (MRI); 5) Establish and lead an independent research laboratory. Mentors/Environment: The mentoring team will assist the candidate to ensure his success through the K01 training and research activity. The proposed plan will leverage resources of the newly established Center for Geroscience and Healthy Brain Aging, the NIH supported Nathan Shock Center, and the NIGMS-funded CoBRE training grant. The department is fully committed to support Dr. Tarantini independently of the outcome of this K01 application. Research: Mid-life obesity promotes cellular senescence. Aging-induced senescence among cells of neurovascular unit (NVU) associates with neurovascular dysfunction and cognitive impairment. Yet, the impact of obesity-induced senescence on the cellular components of the NVU and its function is not understood. We hypothesize that obesity accelerates NVU senescence, impairing structural and functional qualities of the cerebral vasculature. The resulting decline in cerebral blood flow and increased neuroinflammation contribute to cognitive impairment. We predict that elimination of senescent cells rejuvenates the NVU, restoring its youthful functional and structural integrity, which confers cognitive benefits. This project aims to characterize mid-life obesity-induced senescence in the neurovascular unit (Aim 1), the effects of senescence on NVC responses, cerebral blood flow and cognition (Aim 2), and how senescence alters microvascular density and BBB integrity in mouse models of mid-life obesity (Aim 3). Summary: This K01 proposal utilizes advanced imaging and sophisticated sequencing and data integration techniques in a relevant model of mid-life obesity to detect senescence in the NVU of the brain. Understanding the relationship between brain cellular senescence and impaired BBB function and diminished cerebrovascular hemodynamic responses (which are responsible to maintain intact cognitive function) will be critical to address potential nutritional interventional therapies to avoid obesity-induced cognitive deficits in aging and develop an independent research direction.

Stefano Tarantini 博士是一位初级衰老研究员，其首要目标是开发一个独立的了解营养生活方式干预并将其应用于脑血管衰老领域的研究计划改善与年龄相关的血管性认知障碍和痴呆（VCID）。为了实现这一目标，需要执行以下操作 K01 提案旨在进一步加强 Tarantini 博士的培训，使他能够探索中年肥胖对健康的影响神经血管衰老，因为它与血管认知障碍和相关疾病的发展有关痴呆症。候选人：Tarantini博士是生物化学与分子生物学系助理教授在俄克拉荷马大学 HSC 就读。这个 K01 提案完美地建立在他之前的训练基础上，并扩展了他的能力逻辑方向的研究在认知衰老领域变得越来越重要。这个提议确定了 5 个培训目标： 1) 获得营养领域的新颖培训； 2）接受数据集成培训，生物统计学、单细胞转录组学和分析； 3）先进活体成像技术培训； 4）提高磁共振成像（MRI）技能； 5）建立并领导一个独立的研究实验室。导师/环境：导师团队将协助候选人确保他通过K01取得成功培训和研究活动。拟议的计划将利用新成立的中心的资源老年科学和健康脑老化、NIH 支持的 Nathan Shock 中心以及 NIGMS 资助的 CoBRE 培训补助金。无论此次事件的结果如何，该部门都将全力支持塔兰蒂尼博士。 K01申请。研究：中年肥胖会促进细胞衰老。衰老引起的衰老神经血管单元（NVU）细胞与神经血管功能障碍和认知障碍有关。然而，肥胖引起的衰老对 NVU 细胞成分及其功能的影响尚不清楚。我们假设肥胖会加速 NVU 衰老，损害 NVU 的结构和功能质量脑血管系统。由此导致的脑血流量下降和神经炎症增加导致认知障碍。我们预测，消除衰老细胞可以使 NVU 恢复活力，恢复年轻状态。功能和结构的完整性，赋予认知益处。该项目旨在描绘中年生活的特征肥胖引起的神经血管单元衰老（目标 1），衰老对 NVC 反应的影响，脑血流和认知（目标 2），以及衰老如何改变微血管密度和血脑屏障完整性在中年肥胖小鼠模型中（目标 3）。摘要：该 K01 提案利用了先进的成像技术和在中年肥胖相关模型中使用复杂的测序和数据集成技术来检测大脑 NVU 的衰老。了解脑细胞衰老与脑细胞衰老之间的关系 BBB 功能受损和脑血管血流动力学反应减弱（这是导致保持完整的认知功能）对于解决潜在的营养介入疗法至关重要，以避免肥胖引起的衰老认知缺陷并制定了独立的研究方向。