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Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
Non-coding RNAs in gastric cancer: mechanisms and therapeutic prospects
Zhifei Han1, Wenjuan Liu2, Yigao Zhu3
1Department of Gastrointestinal Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, 250117, China.
Abstract:
Gastric cancer is the fifth most common cancer and the third leading cause of cancer-related deaths worldwide. It is associated with high molecular and phenotypic heterogeneity. Early-stage gastric cancer can be treated with endoscopic resection and surgery, whereas at its advanced stage, sequential chemotherapy presents the only treatment option, which starts with first-line platinum and fluoropyrimidine-based dual drugs, supporting a median survival period of less than one year. Targeted monoclonal antibodies approved for the treatment of gastric cancer are effective for a limited subset of patients. Furthermore, painless and precise markers for the early detection of gastric cancer and new targets for its treatment are unavailable. Interestingly, many non-coding RNAs (ncRNAs), such as microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), play key roles in the development of gastric cancer. Multiple pieces of evidence suggest that ncRNAs play a crucial role in the treatment of gastric cancer using chemotherapy and targeted therapy drugs. In this article, we systematically reviewed the important roles of ncRNAs in chemotherapy resistance, immune escape, metabolism, and angiogenesis of gastric cancer, and systematically elucidated the relevant molecular mechanisms. In addition, we also proposed the potential clinical significance of ncRNA as a new therapeutic target and prognostic biomarker for gastric cancer.
Insights
Non-coding RNAs (ncRNAs) are key players in gastric cancer development and treatment resistance. Understanding their roles offers potential for new diagnostic markers and therapeutic targets.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Gastric cancer is a leading cause of cancer death globally, characterized by significant molecular heterogeneity.
- Current treatments for advanced gastric cancer, including chemotherapy and targeted therapies, have limited efficacy and lack precise early detection markers.
- Non-coding RNAs (ncRNAs), encompassing microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), are increasingly recognized for their roles in cancer.
Purpose of the Study:
- To systematically review the critical roles of ncRNAs in gastric cancer.
- To elucidate the molecular mechanisms underlying ncRNA involvement in chemotherapy resistance, immune escape, metabolism, and angiogenesis.
- To explore the potential of ncRNAs as therapeutic targets and prognostic biomarkers for gastric cancer.
Main Methods:
- Systematic literature review.
- Analysis of molecular mechanisms.
- Evaluation of clinical significance.
Main Results:
- ncRNAs significantly influence chemotherapy resistance, immune escape, metabolic reprogramming, and angiogenesis in gastric cancer.
- Specific ncRNAs are implicated in the development and progression of gastric cancer.
- Evidence suggests ncRNAs are crucial in the response to chemotherapy and targeted therapy.
Conclusions:
- ncRNAs are pivotal in gastric cancer pathogenesis and treatment response.
- ncRNAs hold significant promise as novel therapeutic targets for gastric cancer.
- ncRNAs may serve as valuable biomarkers for early detection and prognosis in gastric cancer.
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Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
MicroRNAs
MicroRNAs

