The global expression profiling in esophageal squamous cell carcinoma.

Area of Science:

• Oncology
• Molecular Biology
• Genomics

Background:

• Esophageal squamous cell carcinoma (ESCC) is the predominant global subtype of esophageal cancer.
• Understanding the molecular mechanisms driving ESCC tumorigenesis is crucial for developing effective treatments.

Purpose of the Study:

• To investigate aberrant global gene expression profiles in ESCC.
• To construct regulatory networks involving long non-coding RNAs (lncRNAs), microRNAs (miRNAs), and messenger RNAs (mRNAs).
• To identify potential therapeutic targets for ESCC.

Main Methods:

• RNA-sequencing was employed to measure the expression patterns of lncRNAs, miRNAs, and mRNAs in ESCC.
• Bioinformatic analyses were used to identify differentially expressed molecules (DEMs, DEMIs) and construct regulatory networks.
• Quantitative real-time polymerase chain reaction and microarray analyses validated the expression of candidate molecules.

Main Results:

• A regulatory network of differentially expressed molecules was constructed, highlighting hub miRNAs (hsa-miR-424-5p, hsa-miR-450b-5p).
• These hub miRNAs were found to negatively regulate numerous differentially expressed mRNAs.
• Targeted mRNAs were significantly enriched in cancer-related pathways, including MAPK signaling, pathways in cancer, and focal adhesion.

Conclusions:

• The study identified key lncRNAs, miRNAs, and mRNAs involved in ESCC tumorigenesis.
• The constructed regulatory network provides insights into the molecular mechanisms underlying ESCC.
• These findings may offer potential therapeutic targets for managing esophageal squamous cell carcinoma.