Long intergenic non-protein coding RNA 1694 (LINC01694)

Long intergenic non-protein coding RNA 1694 (LINC01694) is a long non-coding RNA (lncRNA) located on chromosome 21q22.3, classified specifically as a long intergenic non-coding RNA (lincRNA), meaning it is autonomously transcribed from regions of the genome not overlapping with protein-coding genes. LINC01694 does not encode a protein, but functions instead as a regulatory RNA impacting gene expression. Functionally, it acts as a competing endogenous RNA (ceRNA), sponging microRNAs (notably miR-340-5p), thereby regulating the expression of target genes like Sox4 that are implicated in cell proliferation, invasion, and apoptosis. Studies have shown that LINC01694 is significantly upregulated in gallbladder cancer, correlating with poor prognosis; its levels in tissue and serum are of potential diagnostic and prognostic value in this cancer type. Downregulation of LINC01694 inhibits cancer cell growth and metastasis, suggesting its potential relevance as an oncogenic lncRNA and a candidate therapeutic target in gallbladder cancer. Currently, there are no known pharmacological inhibitors or drugs that directly interact with LINC01694.

Other names

LINC01694

Acts as a competitive endogenous RNA (ceRNA) by sponging miR-340-5p, modulating Sox4 expression and downstream pathways in cancer cells