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Zhou, Xiaofang; Liu, Mu; Deng, Guanming; Chen, Le; Sun, Lijuan; Zhang, Yun; Luo, Chenhui; Tang, Jie
Molecular therapy. Nucleic acids, 06/2021, Letnik: 24Journal Article
Chronic stress has been proven to accelerate the development and progression of ovarian cancer, but the underlying molecular mechanisms have not been fully elucidated. In a combination survey of ovarian cancer with chronic stress (OCCS) mouse models and high-throughput sequencing, a key lncRNA named LOC102724169 on chromosome 6q27 has been identified, which functions as a dominant tumor suppressor in OCCS. Transcriptionally regulated by CCAAT enhancer binding protein (CEBP) beta (CEBPB), LOC102724169 shows low expression and correlates with poor progression-free survival (PFS) in OCCS patients. LOC102724169 is an instructive molecular inhibitor of malignancy of ovarian cancer cells, which is necessary to improve the curative effect of cisplatin therapy on ovarian cancer. This function stems from the inactivation of molecules in phosphatidylinositol 3-kinase (PI3K)/AKT signaling, repressing MYB expression and retaining the responsiveness of cancer cells to cisplatin. These findings provide a mechanistic understanding of the synergistic anti-tumor purpose of LOC102724169 as a bona fide tumor suppressor, enhancing the therapeutic effect of cisplatin. The new regulatory model of “lncRNA-MYB” provides new perspectives for LOC102724169 as a chronic stress-related molecule and also provides mechanistic insight into exploring the cancer-promoting mechanism of MYB in OCCS, which may be a promising therapeutic strategy for ovarian cancer. Display omitted Tang and colleagues identify a key lncRNA, LOC102724169, as a bona fide tumor suppressor, enhancing the therapeutic effect of cisplatin on ovarian cancer patients with chronic stress. This provides new perspectives for LOC102724169 as a chronic stress-related molecule and mechanistic insight into exploring the cancer-promoting mechanism for ovarian cancer.
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in: SICRIS
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