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The aberrant expression of long noncoding RNAs (lncRNAs) has been reported frequently in specific cancers, including high-grade serous ovarian cancer (HGSOC). The purpose of the present study was to explore the clinical significance and underlying mechanisms of a significantly dysregulated lncRNA (NEAT1) in HGSOC. Our results showed that elevated NEAT1 expression in human HGSOC specimens correlated with a poor prognosis. Functional experiments demonstrated that knockdown of NEAT1 significantly prohibited ovarian cancer cell proliferation and invasion in vitro and restrained tumor growth in vivo. LIN28B was identified by bioinformatics analysis along with experimental evidence as a direct actor that enhanced NEAT1 stability. A rescue functional assay confirmed that the LIN28B/NEAT1 axis contributed to oncogenic functions in ovarian cancer cells. Moreover, gene expression profile data and dual luciferase reporter assay results demonstrated that NEAT1 functioned as a competing endogenous RNA (ceRNA) for miR-506 to promote cell proliferation and migration. Taken together, our results showed that NEAT1, stabilized by LIN28B, promoted HGSOC progression by sponging miR-506. Thus, NEAT1 can be regarded as a vital diagnostic biomarker for HGSOC and a therapeutic target.
Assuntos
Movimento Celular/genética , Proliferação de Células/genética , MicroRNAs/genética , Neoplasias Ovarianas/genética , RNA Longo não Codificante/genética , Proteínas de Ligação a RNA/genética , Apoptose/genética , Carcinogênese/genética , Carcinogênese/patologia , Linhagem Celular Tumoral , Progressão da Doença , Feminino , Regulação Neoplásica da Expressão Gênica/genética , Humanos , Pessoa de Meia-Idade , Neoplasias Ovarianas/patologia , Regulação para Cima/genéticaRESUMO
OBJECTIVE: To present the surgical outcomes of advanced epithelial ovarian cancer (AEOC) since the implementation of a personalized approach and to validate multiple predictive models for R0 resection. METHODS: Personalized strategies included: 1) Non-invasive model: preoperative clinico-radiological assessment according to Suidan criteria with a predictive score for all individuals. Patients with a score 0–2 were recommended for primary debulking surgery (PDS, group A), or otherwise were counseled on the choices of PDS, neoadjuvant chemotherapy (NAC, group B) or staging laparoscopy (S-LPS). 2) Minimally invasive model: S-LPS with a predictive index value (PIV) according to Fagotti. Individuals with a PIV < 8 underwent PDS (group C) or otherwise received NAC (group D). Intraoperative assessment (with Eisenkop, peritoneal cancer index [PCI], and Aletti scores) and surgical results were prospectively collected. RESULTS: Between September 2015 and August 2017, 161 pathologically confirmed epithelial ovarian cancer patients were included. A total of 52 (32.3%) patients had a predictive score of 0–2, and 109 (67.7%) patients had a score ≥ 3. Among these individuals, 41 (25.5%) patients received S-LPS. Finally, 110 (68.3%) patients underwent PDS (A+C), and 51 (31.7%) patients received NAC (B+D). The R0 resection rates in PDS and NAC patients were 56.4% and 60.8%, respectively. The area under the curve (AUC) of Suidan criteria was 0.548 for group (A+C). The AUC of Fagotti score was 0.702 for group C. The AUC of Eisenkop, PCI, and Aletti scores were 0.808, 0.797, and 0.524, respectively. CONCLUSION: The Suidan criteria were not effective in these AEOC patients. S-LPS was helpful in decision-making for PDS and should be endorsed in the future.
Assuntos
Humanos , Área Sob a Curva , Estudos de Coortes , Tratamento Farmacológico , Laparoscopia , Neoplasias Ovarianas , Estudos Prospectivos , Projetos de Pesquisa , TriagemRESUMO
an those received RH (29% vs. 9%, P=0.042). Conclusion NSRH is safe and feasible surgical management for cervical cancer patients, which would improved the physiology of pelvic autonomic nerve postoperatively.
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chronic cervicitis(0%),(P=0.000).The positive rates of EPMMPRIN overexpression in metastatic lymph nodes was 54.5%(12/22),no difference was found from corresponding primary tumor(72.7%,P=0.210).But EMMPRIN overexpression in primary tumor was related to lymph node metastasis(P=0.026),no relationship was found between EMMPRIN expression and other clinical-pathological parameters.Univariate analyses revealed that EMMPRIN expression did not correlate to tumor-specific survival.In contrast,lymph vascular space invasion,deep stromal invasion and lymph node metastasis were significantlyassociated with poor prognosis.In multivariate analysis,lymph-node metastasis was the independent prognostic factor for tumor-specific survival(P=0.006;HR=0.038;95% confidence interval,0.0190.763).Conclusion:EMMPRIN overexpression may play an important role in progression of human cervical cancer,and in the development of cervical cancer from CIN.