Regulation of Melanoma Cell Malignancy by Compartmentalized Chemokine Receptor Signaling

通过区室化趋化因子受体信号传导调节黑色素瘤细胞恶性肿瘤

• 批准号: 10528741
• 负责人: Alex Rojas Bie Thomsen
• 金额: $ 41.27万
• 依托单位: NEW YORK UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-23 至 2024-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10528741
• 关键词: Agonist; Anatomy; Arrestins; Binding Sites; CCL19 gene; CCL21 gene; Calcium; Cell Differentiation process; Cell Maturation; Cell Proliferation; Cell membrane; Cells; Cholesterol; Complex; Cryoelectron Microscopy; Deformity; Disease; Drug Prescriptions; Drug Targeting; Endocytosis; Endosomes; Environment; G protein coupled receptor kinase; G-Protein-Coupled Receptors; GTP-Binding Proteins; Gene Expression; Genes; Genetic Transcription; Growth; Heterotrimeric GTP-Binding Proteins; Human; Immune; Infection; Inflammation; Invaded; Kidney; Lead; Ligands; Malignant - descriptor; Malignant Neoplasms; Melanoma Cell; Metastatic Neoplasm to Lymph Nodes; Nature; Neoplasm Metastasis; Pathogenicity; Pathologic; Pathway interactions; Patients; Phosphorus; Phosphorylation; Physiological; Production; Proliferating; Proteins; Receptor Signaling; Regulation; Reporting; Resolution; Role; Serum; Signal Transduction; Signaling Protein; Skin Cancer; Structure; Testing; Tissues; Transforming Growth Factors; Tumor-Derived; Up-Regulation; Water; base; cancer cell; cell motility; chemokine; chemokine receptor; cholesterol biosynthesis; chronic pain; desensitization; drug discovery; endosome membrane; fighting; malignant phenotype; melanoma; member; novel; receptor; receptor expression; receptor internalization; recruit; response; targeted treatment; therapeutic target; tumor

Project Summary Melanoma is the deadliest form of skin cancer with few treatment options to patients with advanced metastatic disease. Melanoma cell proliferation, survival, invasion, and metastasis to lymph nodes correlates with expression of the chemokine receptor CCR7. CCR7 is a member of the highly druggable G protein-coupled receptors (GPCRs) superfamily and promotes cell migration and maturation of immune cells. Classically, upon agonist stimulation, GPCRs at the cell membrane activate heterotrimeric G proteins, causing downstream signaling throughout the cell. In order to terminate G protein signaling, cells have devised a specialized desensitization mechanism that includes receptor phosphorylation by GPCR kinases and subsequent recruitment of β-arrestins (βarrs) to the phosphorylated receptors. The GPCR–βarrs interaction both blocks the G protein-binding site and promotes receptor endocytosis. However, we recently discovered that some GPCRs interact with G proteins and βarrs simultaneously to form GPCR–G protein–βarr `megaplexes', which allows the receptor to continue to stimulate G protein signaling while being internalized into endosomes by βarrs. Our preliminary results suggest that CCR7 forms such megaplexes and continues to stimulate G protein signaling after having been internalized. The proposed project aims to explore the involvement of this endosomal CCR7 signaling in malignant progression of melanoma cells. To this end, we have developed an experimental approach to separate pathophysiological functions initiated by plasma membrane CCR7 signaling from endosomal CCR7 signaling. This approach leverages two natural chemokine ligands, CCL19 and CCL21, which predominately activate G proteins from endosomes or plasma membrane, respectively. Using these chemokines to stimulate CCR7 in HEK293 cells, we demonstrate that signaling from different cellular compartments promote distinct transcriptional changes. In particular, we observed upregulation of key genes involved in the cholesterol biosynthesis in response to endosomal CCR7 signaling whereas plasma membrane CCR7 signaling enhanced the expression of inhibitory SMADs and other genes related to the transforming growth factor-β (TGF-β) pathway. In melanoma, these two pathways are reported to have opposite effects with cholesterol production accelerating melanoma cell proliferation and inhibitory SMADs limiting growth. Therefore, we here propose to test the hypothesis that endosomal CCR7 signaling in melanoma specifically drives pathogenic cell proliferation through enhanced cholesterol biosynthesis. The results from this project will not only enhance our understanding of how chemokine receptor expression promotes melanoma malignancy but might also provide a new strategy to develop effective melanoma therapeutics by targeting chemokine receptors at endosomal compartments.

项目摘要 黑色素瘤是皮肤癌最致命的形式，对晚期转移性患者的治疗选择很少 疾病。黑色素瘤细胞增殖，生存，侵袭和淋巴结转移与 趋化因子受体CCR7的表达。 CCR7是高度吸毒的G蛋白偶联的成员 受体（GPCR）超家族并促进免疫细胞的细胞迁移和成熟。经典，上面 激动剂刺激，细胞膜处的GPCR激活异三聚体G蛋白，导致下游 整个细胞的信号传导。为了终止G蛋白信号传导，细胞已经设计了一个专业的 脱敏机制包括GPCR激酶的受体磷酸化和随后的 募集β-arrestin（βArrs）向磷酸化的接收者。 GPCR –βarr相互作用都阻止 G蛋白结合部位并促进受体内吞作用。但是，我们最近发现一些GPCR 与G蛋白和βArr相互作用，仅形成GPCR – G蛋白–βarr“ Megaplexes”，这允许 受体继续刺激G蛋白信号传导，同时被βarr内化为内体。我们的 初步结果表明，CCR7形成了这样的大囊膜，并继续刺激G蛋白信号传导 内部化后。拟议的项目旨在探索该内体CCR7的参与 黑色素瘤细胞恶性进展中的信号传导。为此，我们开发了一种实验方法 分离质膜CCR7信号传导与内体CCR7发起的病理生理功能 信号。这种方法利用了两个天然趋化因子配体CCL19和CCL21，主要是 分别从内体或质膜激活G蛋白。使用这些趋化因子刺激 CCR7在HEK293细胞中，我们证明来自不同细胞室的信号传导促进了不同的 转录变化。特别是，我们观察到与胆固醇有关的关键基因的上调 生物合成响应于内体CCR7信号传导，而质膜CCR7信号传导增强 与转化生长因子-β（TGF-β）途径有关的抑制性SMAD和其他基因的表达。 在黑色素瘤中，据报道，这两种途径在加速胆固醇时具有相反的作用 黑色素瘤细胞增殖和抑制性SMADS限制生长。因此，我们在这里建议测试 假设黑色素瘤中内体CCR7信号传导特异性地通过 增强的胆固醇生物合成。该项目的结果不仅会增进我们对如何的理解 趋化因子受体表达可促进黑色素瘤恶性肿瘤，但也可能为 通过靶向内体室中的趋化因子受体来发展有效的黑色素瘤疗法。

项目成果

Arrestin-biased AT1R agonism induces acute catecholamine secretion through TRPC3 coupling.

抑制蛋白偏向的 AT1R 激动作用通过 TRPC3 偶联诱导急性儿茶酚胺分泌

• DOI: 10.1038/ncomms14335
• 发表时间: 2017-02-09
• 期刊: Nature communications
• 影响因子: 16.6
• 作者: Liu CH;Gong Z;Liang ZL;Liu ZX;Yang F;Sun YJ;Ma ML;Wang YJ;Ji CR;Wang YH;Wang MJ;Cui FA;Lin A;Zheng WS;He DF;Qu CX;Xiao P;Liu CY;Thomsen AR;Joseph Cahill T 3rd;Kahsai AW;Yi F;Xiao KH;Xue T;Zhou Z;Yu X;Sun JP
• 通讯作者: Sun JP

Novel strategies in drug discovery of the calcium-sensing receptor based on biased signaling.

基于偏向信号传导的钙敏感受体药物发现新策略。

• DOI: 10.2174/138945012802429642
• 发表时间: 2012
• 期刊: Current drug targets
• 影响因子: 3.2
• 作者: Thomsen,AlexRojasBie;Smajilovic,Sanela;Bräuner-Osborne,Hans
• 通讯作者: Bräuner-Osborne,Hans

G protein-coupled receptor signaling analysis using homogenous time-resolved Förster resonance energy transfer (HTRF®) technology.

• DOI: 10.3390/ijms15022554
• 发表时间: 2014-02-13
• 期刊: International journal of molecular sciences
• 影响因子: 5.6
• 作者: Nørskov-Lauritsen L;Thomsen AR;Bräuner-Osborne H
• 通讯作者: Bräuner-Osborne H

Gq activity- and β-arrestin-1 scaffolding-mediated ADGRG2/CFTR coupling are required for male fertility.

Gq 活性和 beta-arrestin-1 支架介导的 ADGRG2/CFTR 偶联是男性生育能力所必需的

• DOI: 10.7554/elife.33432
• 发表时间: 2018-02-02
• 期刊: eLife
• 影响因子: 7.7
• 作者: Zhang DL;Sun YJ;Ma ML;Wang YJ;Lin H;Li RR;Liang ZL;Gao Y;Yang Z;He DF;Lin A;Mo H;Lu YJ;Li MJ;Kong W;Chung KY;Yi F;Li JY;Qin YY;Li J;Thomsen ARB;Kahsai AW;Chen ZJ;Xu ZG;Liu M;Li D;Yu X;Sun JP
• 通讯作者: Sun JP