{'fraction_non_alphanumeric': 0.021343873517786563, 'fraction_numerical': 0.014229249011857707, 'mean_word_length': 5.73404255319149, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 1, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
RNA-sequencing based identification of crucial genes for esophageal squamous cell carcinoma.

AIMS
To identify key genes and pathways in the development of esophageal squamous cell carcinoma with RNA-seq data.


MATERIALS AND METHODS
RNA-seq data including three paired samples were downloaded from Sequence Read Archive database under accession number SRP007169 and differentially expressed genes (DEGs) were identified with package edge R of R. Functional enrichment analysis was performed to uncover their biological functions with the Database for Annotation, Visualization, and Integrated Discovery (DAVID) tools.


RESULTS
A total of 5561 DEGs were obtained, including 1829 upregulated and 3732 downregulated. Quite a few upregulated genes were components of collagen and matrix metallopeptidases (MMPs), which are involved in cell adhesion, cell mobility and so on. Keratin, mucin and cysteine-rich secretory protein were found to be significantly downregulated. Significantly over-represented biological processes for downregulated genes were epidermis development, epidermal cell differentiation and arachidonic acid metabolism.


CONCLUSION
These identified DEGs may be underlying targets for diagnosis and treatment of esophageal squamous cell carcinoma.