Targeted Isolation and Identification of Sialylated Glycoproteins in Cancer Tissues, Cells and Biofluids

癌症组织、细胞和生物液中唾液酸化糖蛋白的靶向分离和鉴定

基本信息

批准号：
10592315
负责人：
RICHARD R. DRAKE
金额：
$ 33.07万
依托单位：
MEDICAL UNIVERSITY OF SOUTH CAROLINA
依托单位国家：
美国
项目类别：
财政年份：
2022
资助国家：
美国
起止时间：
2022-03-15 至 2025-02-28
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10592315
关键词：
Affinity Alkynes Antibodies Antigens Area Azides Biological Markers CA-19-9 Antigen Cancer Diagnostics Cancer Patient Cancer cell line Carbohydrates Cell Communication Cell Line Cell surface Cell-Cell Adhesion Cells Chemistry Clinical Complex Detection Development Drug or chemical Tissue Distribution Environment Evaluation Extracellular Matrix FDA approved Formalin Fucose Glycocalyx Glycopeptides Glycoprotein Degradation Pathway Glycoproteins Goals Histopathology Human Human Resources Image Immune Individual Isomerism Knowledge Laboratories Ligand Binding Link Malignant Neoplasms Malignant neoplasm of pancreas Malignant neoplasm of prostate Maps Mediating Methodology Microscopy Neoplasm Metastasis Patients Peptide Hydrolases Plasma Polysaccharides Post-Translational Protein Processing Process Prognosis Prostatic Protein Glycosylation Proteins Proteoglycan Proteomics Reagent Receptor Signaling Reproducibility Research Resolution Sampling Serum Sialic Acids Site Solid Neoplasm Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization Surface Therapeutic Tissue imaging Tissues Tumor Antigens Tumor Biology Tumor Markers Tumor Tissue Tumor-Derived Urine amidation biobank cancer biomarkers cancer prevention carcinogenesis cell stroma chemical reaction clinically relevant extracellular glycosylation human tissue imaging approach improved interest mass spectrometric imaging neoplastic cell novel novel diagnostics pancreatic cancer cells portability sialyl Lewis a sialyl Lewis x sialylation tissue fixing tool tumor tumor microenvironment

项目摘要

Glycoproteins account for the majority of the proteins located at the cell surface and in the extracellular environment. During carcinogenesis the normal function of these glycoproteins as binding ligands for cell-cell adhesion, extracellular matrix molecules, signaling receptors, and immune cells becomes altered. Many of the steps in metastatic progression involve re-organization and degradation of the glycoproteins in the extracellular matrix. Hence, glycan and glycoprotein antigens still comprise the majority of FDA approved diagnostic cancer biomarkers. Our group has recently developed multiple N-linked glycan imaging mass spectrometry workflows to characterize the glycomes in clinically relevant tumor tissues, biofluids and cells, as well as individually targeted glycoproteins by immunocapture. In this proposal, application of a new click chemistry reagent specific for targeting of α2,3 sialic acid antigens, like sialyl Lewis A/CA19-9, sialyl Lewis X and sTRA, will be used to improve isolation and sequencing of tumor-associated glycopeptides from FFPE tissues, biofluids and cells. Standard proteases and new ECM-targeted proteases will be used in the analyses. To accomplish this, three Specific Aims are proposed: 1. Isolate, identify and co-localize sialic acid glycoproteins from clinical FFPE cancer tissues; 2. Isolate and identify sialic acid glycoproteins in plasma cancer samples; 3. Isolate and identify sialic acid glycoproteins in cancer cell lines with high levels of α2,3 sialic antigens. The carbohydrate-targeted click capture reagents developed can be applied directly to any FFPE tissue, cell or biofluid of interest using simple chemical reactions. The combination of tools developed herein will facilitate the identification of specific glycopeptide and glycoprotein species in relevant cancer samples which can be applied across the spectrum of cancer prevention, progression, prognosis, and biomarker applications.

糖蛋白占细胞表面和细胞膜中蛋白质的大部分在癌发生过程中，这些糖蛋白的正常功能。细胞间粘附的结合配体、细胞外基质分子、信号受体和免疫细胞发生改变，转移进展的许多步骤都涉及重组。以及细胞外基质中糖蛋白的降解，因此，聚糖和糖蛋白。抗原仍然构成 FDA 批准的大多数诊断癌症生物标志物。最近开发了多种 N-连接聚糖成像质谱工作流程表征临床相关肿瘤组织、生物体液和细胞中的糖组，以及通过免疫捕获单独靶向糖蛋白在此提案中，应用了新的点击。专门针对 α2,3 唾液酸抗原的化学试剂，如唾液酸 Lewis A/CA19-9，唾液酸化Lewis X和sTRA，将用于改进肿瘤相关的分离和测序来自 FFPE 组织、生物液和细胞的糖肽和新的 ECM 靶向。为了实现这一目标，提出了三个具体目标： 1. 从临床 FFPE 癌症组织中分离、鉴定和共定位唾液酸糖蛋白； 3. 血浆癌样品中唾液酸糖蛋白的分离和鉴定；具有高水平 α2,3 唾液抗原的癌细胞系中的唾液酸糖蛋白。开发的碳水化合物靶向点击捕获试剂可直接应用于任何 FFPE 组织，使用简单的化学反应开发感兴趣的细胞或生物流体。本文将有助于鉴定相关的特定糖肽和糖蛋白种类癌症样本可应用于癌症预防、进展、预后和生物标志物应用。