{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent studies have identified the long noncoding RNA C20orf204—also referred to as LINC00176—as an oncogenic factor in hepatocellular carcinoma, where its abnormally high expression promotes cancer cell survival and proliferation. In this context, C20orf204 functions by sequestering tumor‐suppressive microRNAs (miR‑9 and miR‑185), which normally downregulate key transcripts involved in cell cycle control. This “sponge” activity disrupts miRNA-mediated repression, and its depletion leads to cell cycle arrest and necroptosis of HCC cells, with its expression being driven by transcription factors such as Myc, Max, and AP‑4."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n \nIn ovarian cancer, C20orf204 acts as a nuclear regulator that promotes tumorigenesis by enhancing cellular proliferation, migration, and invasion while reducing apoptosis. Here, C20orf204 collaborates with the transcriptional regulator BCL3 to increase the expression of ceruloplasmin (CP), a protein implicated in cancer progression. Interference with this axis via knockdown of either BCL3 or CP successfully mitigates the oncogenic behavior, underscoring the clinical relevance of targeting the C20orf204/BCL3/CP pathway for therapeutic intervention."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": "\n \nMoreover, in the context of autoimmune disease, particularly systemic lupus erythematosus, elevated levels of C20orf204 in CD4+ T cells have been shown to facilitate abnormal immune cell adhesion and proliferation. Mechanistically, C20orf204 downregulates WIF1 expression, thereby unleashing the activity of the WNT5a signaling pathway and promoting pathogenic T cell behavior. Modulation of this pathway through either WIF1 upregulation or inhibition of WNT5a signaling reverses these effects, offering promising insights into SLE treatment strategies."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "D D H Tran, C Kessler, S E Niehus, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Myc target gene, long intergenic noncoding RNA, Linc00176 in hepatocellular carcinoma regulates cell cycle and cell survival by titrating tumor suppressor microRNAs."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Oncogene (2018)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1038/onc.2017.312"}], "href": "https://doi.org/10.1038/onc.2017.312"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "28869604"}], "href": "https://pubmed.ncbi.nlm.nih.gov/28869604"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Lan Dai, Jixiang Niu, Yanli Feng "}, {"type": "b", "children": [{"type": "t", "text": "Knockdown of long non-coding RNA LINC00176 suppresses ovarian cancer progression by BCL3-mediated down-regulation of ceruloplasmin."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Cell Mol Med (2020)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1111/jcmm.14701"}], "href": "https://doi.org/10.1111/jcmm.14701"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "31668012"}], "href": "https://pubmed.ncbi.nlm.nih.gov/31668012"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Chang Lu, Xue Shao, Shengzhu Zhou, et al. "}, {"type": "b", "children": [{"type": "t", "text": "LINC00176 facilitates CD4"}, {"type": "a", "children": [{"type": "t", "text": "sup"}], "href": "sup"}, {"type": "t", "text": "+"}, {"type": "a", "children": [{"type": "t", "text": "/sup"}], "href": "/sup"}, {"type": "t", "text": "T cell adhesion in systemic lupus erythematosus via the WNT5a signaling pathway by regulating WIF1."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Immunol (2021)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.molimm.2021.02.018"}], "href": "https://doi.org/10.1016/j.molimm.2021.02.018"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "33813201"}], "href": "https://pubmed.ncbi.nlm.nih.gov/33813201"}]}]}]}