Name: Transfection of TMEM200A siRNA in Stomach Adenocarcinoma Cell Lines
Uploaded: 2023-09-15T14:10:00
Description: Watch this Scientific Journal Video about Transfection of TMEM200A siRNA in Stomach Adenocarcinoma Cell Lines at JoVE.com

transfection of tmem200a sirna in stomach adenocarcinoma cell lines

TMEM200A：一种在胃癌中调节 EMT 和 PI3K/AKT 的新型癌基因

Cancer has emerged as a persistent public health issue endangering human health globally1due to its high morbidity and mortality rates worldwide, posing a heavy financial and medical burden to society2. Significant advancements in cancer therapy have been achieved in recent years thanks to the discovery of cancer markers3, and researchers have developed novel diagnostic methods and new drugs to treat cancer. However, some patients with cancer still have poor prognoses because of factors such as medication resistance, side effects of drugs, and chemical sensitivity4. Therefore, there is an urgent need for identifying new biomarkers for screening and treating early-stage cancers5.
Membrane proteins are proteins that can bind and integrate into cells and organelle membranes6. These can be grouped into three categories depending on the strength of binding to the membrane and their location: lipid-anchored proteins, integral proteins, and peripheral membrane proteins7,8. A transmembrane (TMEM) protein is an integral membrane protein that consists of at least one transmembrane segment9, which passes either completely or partially through the biological membrane. 
Although the mechanisms of action of proteins belonging to the TMEM family are not well understood, these proteins are known to be involved in several types of cancers10. Several TMEM proteins are associated with migratory, proliferative, and invasive phenotypes, and their expression is often associated with a patient's prognosis11. Therefore, TMEM family members have become the target of research. A comprehensive review of existing reports on TMEM revealed that they are mostly associated with inter- and intracellular signaling12, immune-related diseases, and tumorigenesis10. Many TMEMs also possess important physiological functions, for example, ion channels in the plasma membrane, activation of signal transduction pathways, as well as the mediation of cell chemotaxis, adhesion, apoptosis, and autophagy10. Therefore, we hypothesized that TMEM proteins may be important prognostic markers in the detection and treatment of tumors.
TMEM200A expression is significantly elevated in gastric cancer (GC). Higher expression of TMEM200A13, which has eight exons and a full length of 77.536 kb on chromosome 6q23.1, has been linked to a poor prognosis for overall survival (OS) in cases of GC. Yet the changes in its expression have rarely been reported in oncology studies. This article compares and analyzes the usefulness of TMEM200A as a therapeutic target and tumor diagnostic marker in various cancer studies using different publicly available datasets. We assessed the effectiveness of TMEM200A as a pan-cancer diagnostic and prognostic biomarker as well as its expression levels in various human cancer types using RNA-seq data from the UCSC Xena and TCGA databases, as well as by real-time quantitative polymerase chain reaction (qRT-PCR) and western blotting. 
The effect of TMEM200A expression levels on mutation rates, regulatory processes, tumor diagnosis and prognosis, immune infiltration, and immunotherapy was further investigated using a mix of computational tools and dataset websites. CBioPortal and the Catalog of Somatic Mutations in Cancer Cells (COSMIC) databases were used to examine mutations in TMEM200A. Sangerbox and TISIDB websites were utilized to understand how TMEM200A influences immune infiltration. The Tumor Immune Single Cell Center (TISCH) online tool and CancerSEA database were used to investigate the function of TMEM200A. Finally, to assess the impact of TMEM200A on the malignant behavior and tumor development function of GC cells, a loss-of-function experiment was conducted in an in vitro assay. Additionally, western blotting was performed to assess how TMEM200A knockdown affected the PI3K/AKT signaling pathway and the epithelial-mesenchymal transition (EMT) in GC.

作者聚焦：揭示胃癌中跨膜蛋白家族相关标志物及其对靶向治疗的影响 

TMEM200A作为泛癌生物标志物的多组学分析

Significant advancements have been made in the investigation of cancer biomarkers. Nevertheless, the extract function of tumor-related matters associated with transmembrane protein family remains unidentified. As a result, our research on the TMEM200A in gastric cancer has generated novel research directions for related cells.In this study, we used the combination of online database prediction and experimental technique validation, which simplifies the research steps and the stem cell cost of experiment in related field. In future, our laboratory will focus on exploring the specific mechanism of tumor in gastric cancer, searching for the association between glycosylation modification and the metabolic recording, and identifying find new targets for gastric cancer treatment.

Watch this Scientific Journal Video about Transfection of TMEM200A siRNA in Stomach Adenocarcinoma Cell Lines at JoVE.com

Transfection of TMEM200A siRNA in Stomach Adenocarcinoma Cell Lines  

胃腺癌细胞系中 TMEM200A siRNA 的转染

首先，导航到 TIMER2.0 数据库网站界面。选择“癌症探索”选项卡。在搜索框中输入基因ID，点击提交，生成各种肿瘤类型TMEM200A的差异表达图像。对于转染，将三个微量离心管标记为 siRNA-1、2 和 3。然后加入转染试剂，然后在每个试管中加入基础培养基。向相应的试管中加入 4 微克 siRNA 并充分混合。现在将混合物分配到含有腺癌细胞的六孔板的三个孔中。轻轻摇晃盘子以确保混合物均匀分布。将添加混合物的三个孔标记为 siRNA 1、siRNA 2 和 siRNA 3。将细胞孵育四到六个小时后，用新鲜的完全培养基替换标记孔中一半的培养基。将细胞孵育 24 至 48 小时，然后再用于定量 RTPCR 和蛋白质印迹。

Research

JoVE Journal

Cancer Research

Transfection of TMEM200A siRNA in Stomach Adenocarcinoma Cell Lines

Multiomics Analysis of TMEM200A as a Pan-Cancer Biomarker

The transmembrane protein, TMEM200A, is known to be associated with human cancers and immune infiltration. Here, we assessed the function of TMEM200A in ...

科研

癌症研究

Quantification of mRNA in TMEM200A siRNA Transfected Stomach Adenocarcinoma Cells

Quantification of mRNA in TMEM200A siRNA Transfected Stomach Adenocarcinoma Cells  

TMEM200A siRNA 转染胃腺癌细胞中 mRNA 的定量

Protein Detection in TMEM200A siRNA Transfected Stomach Adenocarcinoma Cells Using Western Blotting

Protein Detection in TMEM200A siRNA Transfected Stomach Adenocarcinoma Cells Using Western Blotting  

Western Blotting 检测 TMEM200A siRNA 转染的胃腺癌细胞中的蛋白质

Determining the Cell Viability of TMEM200A siRNA Transfected HGC-27 Cell Lines Using CCK-8 Assays

Determining the Cell Viability of TMEM200A siRNA Transfected HGC-27 Cell Lines Using CCK-8 Assays  

使用 CCK-8 检测法测定 TMEM200A siRNA 转染的 HGC-27 细胞系的细胞活力