当前位置: X-MOL 学术Transl. Oncol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Uncovering Differently Expressed Markers and Heterogeneity on Human Pancreatic Cancer.
Translational Oncology ( IF 5 ) Pub Date : 2020-03-03 , DOI: 10.1016/j.tranon.2020.100749
Sorah Yoon 1 , Haiqing Li 2 , Loren Quintanar 3 , Brian Armstrong 3 , John J Rossi 1
Affiliation  

Discovery of biomarkers is critical to understand tumor heterogeneity and microenvironment. To determine differently expressed makers on cancer tissue for comprehensive profiling, the multiplexed tissue imaging mass cytometer (IMC) which uniquely combines time-of-flight mass spectrometry with metal-labeling technology to enable breakthrough discovery on single cell level was employed to investigate the expression of seven markers related to the epithelial-to-mesenchymal transition [α-smooth muscle actin (α-SMA), vimentin, collagen I, cytokeratin 7, pan-keratin], tumor proliferation (Ki-67), and human leucocyte antigen (HLA-DR) on human pancreatic cancer tissue. The difference was analyzed using bioinformatic tools. We observed the high expression of α-SMA, vimentin, collagen I, and Ki-67 on grade I but not on grade III. HLA-DR was highly expressed on grade I/III but not on grade II. Overall, the expression of markers has elucidated the heterogeneity intratumors. Additionally, to identify biomarkers on pancreatic cancer cells by blind systematic evolution of ligands by exponential enrichment (SELEX), aptamer pull-down assay and liquid chromatography–tandem mass spectrometry were used. Mortalin was identified as a potential a prognostic marker of pancreatic cancer. Our studies demonstrate that the IMC and blind SELEX might be implemented to discover biomarkers which can be used to better understand tumor biology and biomedical research applications.



中文翻译:

揭示人类胰腺癌的不同表达标志物和异质性。

生物标志物的发现对于了解肿瘤异质性和微环境至关重要。为了确定癌症组织上不同表达的标记以进行全面分析,采用独特地将飞行时间质谱与金属标记技术相结合以实现单细胞水平突破性发现的多路组织成像质谱仪 (IMC) 用于研究表达与上皮-间质转化相关的七个标志物 [α-平滑肌肌动蛋白 (α-SMA)、波形蛋白、I 型胶原蛋白、细胞角蛋白 7、泛角蛋白]、肿瘤增殖 (Ki-67) 和人类白细胞抗原 ( HLA-DR) 对人胰腺癌组织的影响。使用生物信息学工具分析差异。我们观察到α-SMA、波形蛋白、I 型胶原蛋白和 Ki-67 在 I 级而非 III 级上的高表达。HLA-DR在I/III级高表达,II级不高表达,总体而言,标志物的表达阐明了肿瘤内的异质性。此外,为了通过指数富集 (SELEX) 配体的盲目系统进化来鉴定胰腺癌细胞上的生物标志物,使用了适体下拉测定和液相色谱 - 串联质谱法。Mortalin 被确定为胰腺癌的潜在预后标志物。我们的研究表明,可以实施 IMC 和盲 SELEX 来发现可用于更好地了解肿瘤生物学和生物医学研究应用的生物标志物。通过指数富集 (SELEX)、适体下拉测定和液相色谱 - 串联质谱法通过配体的盲目系统进化来鉴定胰腺癌细胞的生物标志物。Mortalin 被确定为胰腺癌的潜在预后标志物。我们的研究表明,可以实施 IMC 和盲 SELEX 来发现可用于更好地了解肿瘤生物学和生物医学研究应用的生物标志物。通过指数富集 (SELEX)、适体下拉测定和液相色谱 - 串联质谱法通过配体的盲目系统进化来鉴定胰腺癌细胞的生物标志物。Mortalin 被确定为胰腺癌的潜在预后标志物。我们的研究表明,可以实施 IMC 和盲 SELEX 来发现可用于更好地了解肿瘤生物学和生物医学研究应用的生物标志物。

更新日期:2020-03-03
down
wechat
bug