Mechanisms of Altered Neutrophil Trafficking in the Persistent Inflammation, Immunosuppression and Catabolism Syndrome

持续性炎症、免疫抑制和分解代谢综合征中中性粒细胞运输改变的机制

• 批准号: 9789053
• 负责人: VANESSA NOMELLINI
• 金额: $ 19.9万
• 依托单位: UNIVERSITY OF CINCINNATI
• 依托单位国家: 美国
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-20 至 2020-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9789053
• 关键词: Abnormal Neutrophil; Acute; Anti-Bacterial Agents; Anti-inflammatory; Bacteria; Bacterial Infections; Basic Science; Bone Marrow; Cancer Immunology Science; Catabolism; Cell Death; Cell membrane; Cells; Ceramides; Characteristics; Chemotaxis; Chronic; Clinic; Clinical; Clinical Trials; Clinical Trials Design; Critical Care; Critical Illness; Data; Department chair; Development Plans; Doctor of Philosophy; Early Intervention; Ensure; Environment; Equipment; Exhibits; Experimental Designs; Functional disorder; Goals; Hospitalization; IL8RB gene; Immune; Immune System Diseases; Immune system; Immunosuppression; Impairment; In Vitro; Infection; Inflammation; Inflammatory; Injury; Intra-abdominal; K-Series Research Career Programs; Knowledge; Lung; Mentorship; Methods; Morbidity - disease rate; Mus; Muscular Atrophy; Myeloid Cells; Operative Surgical Procedures; Pathogenesis; Pathologic; Pathway interactions; Patient-Focused Outcomes; Patients; Phase; Phenotype; Play; Predisposition; Pseudomonas aeruginosa; Reactive Oxygen Species; Research; Research Personnel; Role; Scholarship; Scientist; Sepsis; Signal Transduction; Site; Spleen; Structure of parenchyma of lung; Survival Rate; Syndrome; Systemic infection; T-Cell Depletion; Techniques; Testing; Time; Training; Translating; Up-Regulation; Work; Wound Healing; base; career; career development; cecal ligation puncture; chemokine; chemokine receptor; design; disability; experience; immunosuppressed; improved; improved outcome; in vivo; migration; mouse model; neutrophil; novel; pathogen; peripheral blood; preservation; research facility; response; secondary infection; trafficking

Project Summary The proposed Career Development Award will provide Vanessa Nomellini, MD, PhD the support necessary to become an independent scientific investigator. Dr. Nomellini’s research goals are to identify and overcome the undiscovered mechanisms of immune dysfunction after injury and infection. In particular, Dr. Nomellini’s goals are to better understand the patients who progress to a state of chronic critical illness. With the knowledge she gains from the current studies, she hopes to develop clinical trials that will apply early interventions and improve outcomes for these patients. The current proposal aims to investigate the mechanisms of neutrophil dysfunction that occurs during the immunosuppressed phase after sepsis, commonly referred to as the Persistent Inflammation, Immunosuppression and Catabolism Syndrome (PICS). This state is associated with ongoing signs of systemic inflammation, but with increased susceptibility to infection due to T cell depletion and immune cell dysfunction. While a number of immune cells are dysfunctional in this state, this proposed work focuses on the mechanisms of neutrophil dysfunction as the gateway to understanding the pathophysiology behind PICS given the critical role they play in pathogen eradication. The experimental design in this application utilizes a murine model of PICS, which was established in Dr. Nomellini’s lab, to elucidate the mechanisms of aberrant neutrophil migration during PICS using in vivo and in vitro techniques. The career development plan outlined in this proposal includes a mentorship team led by Dr. Charles Caldwell and Dr. Timothy Pritts along with a scholarship oversight committee that includes Dr. Michael Edwards as the Chair of the Department of Surgery and Dr. Alex Lentsch as the Vice Chair of Research for Surgery. While Dr. Nomellini has an extensive background in basic science research, her ability to generate robust clinical trials to further translate the observations in mouse models into the clinic is significantly under- developed. The additional training and mentorship proposed in this application is specifically designed to strengthen and improve her knowledge on clinical trials design to ensure her ultimate career goals are successful. To this end, a reduction in her clinical and educational responsibilities is proposed to provide her with 75% protected research time. She has access to excellent research facilities and equipment to complete all proposed studies. With these changes, along with the complete support of her Department Chair and Section Chief, she will have adequate time and support to successfully complete the proposed studies, follow through with her career development plan and effectively align herself to launch her career as an independent scientist.

项目摘要 拟议的职业发展奖将提供必要的支持凡妮莎Nomellini，医学博士，博士 成为一名独立的科学调查员Nomellini博士的研究目标是识别和克服 损伤和感染后免疫功能障碍的未发现机制。尤其是诺梅利尼博士 目标是更好地了解进展到慢性危重病状态的患者。与 她从目前的研究中获得的知识，她希望开发临床试验， 改善这些患者的治疗效果。 目前的建议旨在研究在治疗过程中发生的中性粒细胞功能障碍的机制。 脓毒症后的免疫抑制期，通常称为持续性炎症， 免疫抑制和卡他综合征（PICS）。这种状态与持续的系统性 炎症，但由于T细胞耗竭和免疫细胞功能障碍，对感染的易感性增加。 虽然许多免疫细胞在这种状态下功能失调，但这项工作的重点是机制。 中性粒细胞功能障碍作为理解PICS背后的病理生理学的门户， 它们在病原体根除中发挥的作用。本申请中的实验设计利用了一种小鼠模型， PICS是Nomellini博士的实验室建立的，旨在阐明异常中性粒细胞的机制， 使用体内和体外技术在PICS期间迁移。 本提案中概述的职业发展计划包括由查尔斯博士领导的导师团队 考德威尔和博士蒂莫西普里茨沿着与奖学金监督委员会，其中包括博士迈克尔 Edwards担任外科主任，Alex Lentsch博士担任研究副主任， 手术虽然Nomellini博士在基础科学研究方面有着广泛的背景，但她的能力， 将小鼠模型中的观察结果进一步转化为临床的可靠临床试验明显不足， 开发本申请中建议的额外培训和指导是专门设计的， 加强和提高她在临床试验设计方面的知识，以确保她的最终职业目标是 成功为此，建议减少她的临床和教育责任， 75%的研究时间受到保护。她有机会获得优秀的研究设施和设备来完成 所有建议的研究。随着这些变化，沿着她的部门主席的全力支持， 科长，她将有足够的时间和支持，成功完成拟议的研究， 通过她的职业发展计划，并有效地调整自己，以启动她的职业生涯作为一个独立的 科学家