Role of cholecystokinin receptor in hepatocellular cancer

项目摘要/摘要 背景：CCK受体是一种G蛋白偶联受体，调节生理功能 胃肠消化功能和胃肠道的生长。CCK受体成为 在胃肠道肿瘤中过度表达，其中受体被配体、CCK ON或胃泌素激活， 刺激癌症生长和转移。CCK受体也被描述为成纤维细胞。什么时候 激活后，这些细胞产生胶原相关蛋白，从而导致与恶性肿瘤相关的纤维化。 并被认为会阻碍治疗剂的渗透。 创新：我们最近发现，高饱和脂肪饮食会诱导肝脏CCK-B的表达 非酒精性脂肪性肝炎小鼠模型中的受体。CCK受体拮抗剂丙谷胺， 逆转炎症、纤维化和脂肪变性防止肝细胞癌的发展 小鼠纳什模型。 长期目标：在这项计划中，我计划研究CCK受体如何调节 肝组织炎症和纤维化及CCK受体在肝细胞癌中的作用 研究目的：将进行体外研究，以分析CCK之间的串扰潜力 受体和趋化因子受体。CCK受体在调节星状细胞肝纤维化中的作用 利用CRISPR技术在体外选择性敲除癌细胞CCK受体并在体内进行 转基因小鼠被改造成CCK-B受体缺失。最后，我们将考察 肝损伤和NASH是否诱导表达CCK-B受体的肝干细胞增殖和 这些干细胞是肝癌的罪魁祸首。 候选人的目标是了解CCK受体在肝癌发生和发展中的病理生理学。 进步。本建议书将在经验丰富的指导团队的指导下完成，该团队包括 杰出的肿瘤生物学家、免疫学家和肝癌研究人员。要实现这些目标 目标，候选人将与她的导师一起工作，并不断审查研究目标，以便发表 说明应聘者的发表记录和职业发展办公室跟踪职业生涯 发展计划，纳入促进进步的不同方法，其中包括手稿 准备，项目管理，遵守时间表，有效管理预算，出席和 在全国会议和院系研讨会上发表演讲，指导研究生和本科生 学生，并准备申请材料。

Project Summary/ Abstract Background: The cholecystokinin (CCK) receptor is a G-protein coupled receptor that regulates physiologic gastrointestinal digestive functions and growth of the gastrointestinal tract. CCK receptors become overexpressed in gastrointestinal cancers where receptor activation by the ligands, CCK on or gastrin, stimulate cancer growth and metastases. CCK receptors have also been described as fibroblasts. When activated, these cells produce collagen-associated proteins that lead to fibrosis associated with malignancies and are thought to impede the penetration of therapeutic agents. Innovation: We recently showed that a diet high in saturated fat induces the expression of hepatic CCK- B receptors in a murine model of nonalcoholic steatohepatitis. The CCK receptor antagonist, proglumide, reversed inflammation, fibrosis, and steatosis prevented the development of hepatocellular carcinoma in the murine NASH model. Long-term objectives: In this proposal, I plan to investigate the mechanisms of how CCK receptors mediate hepatic inflammation and fibrosis and the role of CCK receptors in hepatocellular cancer. Research Aims: In vitro studies will be performed to analyze the potential of cross-talk between CCK receptors and chemokine receptors. The role of CCK receptors in regulating hepatic fibrosis in stellate cells will be carried out in vitro using CRISPR technology to selectively knockout cancer cell CCK receptors and in vivo with transgenic mice engineered to be null in the CCK-B receptor. Lastly, we will examine the novel idea of whether liver injury and NASH induce proliferation of hepatic stem cells that express CCK-B receptors and these stem cells are responsible for HCC. Candidate's Goals: Are to understand the pathophysiology of CCK receptors in liver cancer development and progression. This proposal will be completed under the guidance of an experienced mentor team that includes accomplished tumor biologists, immunologists, and hepatology cancer researchers. To accomplish these goals, the candidate will work with her mentors and constantly review research objectives for publication to address candidate’s publication record and the Professional Development Office to follow a career development plan by incorporating diverse methodologies for advancement, which includes manuscript preparation, project management adhering to timelines, effectively managing a budget, attending and presenting at national conferences and departmental seminars, mentoring graduate and undergraduate students, and preparing application materials.