Targeting TGFB signaling to treat ocular neovascular disease

靶向 TGFB 信号传导治疗眼部新生血管疾病

• 批准号: 10766306
• 负责人: Georgia Zarkada
• 金额: $ 28.8万
• 依托单位: UNIVERSITY OF CONNECTICUT STORRS
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2026-04-30
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10766306
• 关键词: Ablation; Affect; Age related macular degeneration; Angiogenesis Inhibitors; Award; Biology; Blindness; Blood Vessels; Cardiovascular system; Cell Maturation; Cell Proliferation; Cell Separation; Cellular biology; Choroidal Neovascularization; Data; Defect; Development; Diabetic Retinopathy; Disease; Endothelial Cells; Endothelium; Eye; Eye diseases; Future; Gene Expression; Gene Targeting; Genetic; Genetic Transcription; Goals; In Vitro; Individual; Intervention; Knockout Mice; Laboratories; Learning; Literature; MADH2 gene; MADH3 gene; Mediating; Medicine; Mentors; Mentorship; Messenger RNA; Methodology; Mission; Modeling; Molecular; Molecular Target; Mus; National Eye Institute; Neuropilin-1; Pathologic; Patients; Pattern; Pharmacological Treatment; Phase; Phosphorylation; Physiological; Positioning Attribute; Pre-Clinical Model; Principal Investigator; Protocols documentation; Publishing; Receptor Activation; Regulation; Reporting; Research Personnel; Research Proposals; Retina; Retinal Diseases; Retinal Neovascularization; Rodent Model; Role; Series; Signal Pathway; Signal Transduction; Solid; Stress; TGFB1 gene; Testing; Therapeutic; Therapeutic Intervention; Time; Training; Training Programs; Transforming Growth Factor beta; Transforming Growth Factor beta Receptors; VEGFA gene; Vascular Diseases; Vision; Work; angiogenesis; antagonist; arm; cell behavior; comparative; conditional knockout; experimental study; genetic approach; in vivo; insight; lectures; loss of function; medical schools; mouse model; mutant; neovascular; neovascularization; new therapeutic target; next generation; novel; ocular neovascularization; pharmacologic; postnatal; preservation; programs; response; retinal angiogenesis; side effect; therapy outcome; transcription factor; transcriptome sequencing; transcriptomic profiling; translational model; vascular factor

PROJECT SUMMARY/ABSTRACT G. Zarkada Excessive angiogenesis in patients with ocular diseases, including diabetic retinopathy and age-related macular degeneration, causes the majority of severe vision loss in the US. Current treatments are not appropriate or successful for all patients, calling for additional means to manage ocular neovascularization. Recent work from the Eichmann lab suggests that increased angio-suppressive transforming growth factor-β (TGFβ) signaling in endothelial cells (ECs) could successfully restrict angiogenic sprouting. While previous studies accept that downstream TGFβ signaling effectors SMAD2 and SMAD3 cooperate downstream of TGFβ receptor activation, EC-specific ablation of either SMAD has different effects on EC behavior (unpublished data by candidate). This implies that selective manipulation of TGFβ downstream signaling arms is required in order to maximize therapeutic potential. In AIM 1 we will implement conditional mouse models to dissect the roles of endothelial SMAD2 and 3 during retinal angiogenesis. In addition, we will identify specific gene targets of either SMAD in ECs by Next-Generation RNA Sequencing. This analysis will reveal a number of new SMAD transcriptional targets with potential influence on vascular function, some of which will prove to be suitable for therapeutic intervention. AIM 2 will focus on the functions of Neuropilin 1 (NRP1), which is a powerful suppressor of TGFβ signaling in ECs. Conditional mouse models and in vitro approaches will be employed to delineate the specific regulatory effects of NRP1 on TGFβ signaling. Finally, AIM 3 will integrate the results from the previous aims with translational experimentation of preclinical models of vascular eye disease. This project will decipher the role of endothelial TGFβ signaling in sprouting angiogenesis during physiological and pathological conditions, using the eye retina as a model. Thus, this proposal is fully aligned with the mission of the National Eye Institute. This application also includes a detailed training program that will facilitate the candidate’s transition to a principal investigator position. The candidate has a solid background in vascular biology and has been building upon it during the past two years by learning new methodologies and by optimizing the protocols required for the fulfillment of this research proposal. The K99 phase of this award will be conducted under the mentorship of Dr. Eichmann, who is an established leader in vascular patterning and retinal angiogenesis. Additional guidance and support will be provided by Dr. Nicoli and Dr. Adelman, who are experts in comparative mRNA transcriptome profiling and translational models of choroidal neovascularization respectively. The proposal will be carried out at the Cardiovascular Medicine Division of Yale School of Medicine, which offers numerous training possibilities in the form of courses, seminars and lectures, as well as plentiful opportunities for cross-disciplinary partnerships. Overall this proposal will not only enhance our understanding on TGFβ-mediated regulation of sprouting angiogenesis, but will also provide an excellent mentoring framework to create a future independent researcher.

项目摘要/摘要扎尔卡达

项目成果

Specialized endothelial tip cells guide neuroretina vascularization and blood-retina-barrier formation.

• DOI: 10.1016/j.devcel.2021.06.021
• 发表时间: 2021-08-09
• 期刊: DEVELOPMENTAL CELL
• 影响因子: 11.8
• 作者: Zarkada, Georgia;Howard, Joel P.;Xiao, Xue;Park, Hyojin;Bizou, Mathilde;Leclerc, Severine;Kunzel, Steffen E.;Boisseau, Blanche;Li, Jinyu;Cagnone, Gael;Joyal, Jean Sebastien;Andelfinger, Gregor;Eichmann, Anne;Dubrac, Alexandre
• 通讯作者: Dubrac, Alexandre