{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nHepatocellular carcinoma (HCC) represents a major clinical challenge due to its high incidence and mortality, and dysregulation of noncoding RNAs is increasingly recognized as a contributing factor to HCC progression. In this context, the long noncoding RNA LINC00961, which is significantly downregulated in HCC tissues and cell lines, has been identified as a tumor suppressor. Its diminished expression correlates with poor patient outcomes, suggesting that LINC00961 may serve as an independent prognostic indicator."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n \nIn further mechanistic studies, LINC00961 was found to exert its tumor-suppressive effects by acting as a molecular \"sponge\" for miR-5581-3p. This interaction prevents miR-5581-3p from downregulating cardiolipin synthase 1 (CRLS1), a key enzyme whose inhibition leads to enhanced cellular proliferation, migration, and invasion. Essentially, when miR-5581-3p is upregulated, it accelerates these malignant cellular processes, thereby contributing to HCC progression."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n \nOverall, these findings elucidate a critical regulatory axis in HCC where LINC00961 suppresses tumor progression by sequestering miR-5581-3p and, in turn, maintaining CRLS1 expression. The oncogenic potential of miR-5581-3p through its negative regulation of CRLS1 highlights a promising target for prognosis and therapeutic intervention in HCC."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Jian Yin, Qian Liu, Chao Chen, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Small regulatory polypeptide of amino acid response negatively relates to poor prognosis and controls hepatocellular carcinoma progression via regulating microRNA-5581-3p/human cardiolipin synthase 1."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Cell Physiol (2019)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1002/jcp.28383"}], "href": "https://doi.org/10.1002/jcp.28383"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "30825207"}], "href": "https://pubmed.ncbi.nlm.nih.gov/30825207"}]}]}]}