RESUMO
Accumulating evidence suggested the participation of long noncoding RNAs (lncRNAs) in regulating various biological processes so as to affecting cancer progression. However, the functional role of most lncRNAs in colorectal carcer (CRC) is still largely covered. In the present study, we disclosed SNHG14 as a carcinogene in CRC development, as it was low-expressed in normal colon tissues but markedly upregulated in CRC cell lines. Besides, SNHG14 contributed to CRC cell proliferation, motility and EMT in vitro, and inhibition of it confined CRC tumor growth and liver metastasis in vivo. Next, the mechanistic investigations confirmed that SNHG14-promoted CRC progression was mediated by EPHA7, which was negatively regulated by SNHG14 in CRC via an EZH2-dependent way. Importantly, EZH2 was proved as a transcription factor of EPHA7 and functioned as a repressor in EPHA7 transcription by enhancing methylation on EPHA7 promoter. Meanwhile, SNHG14 increased EZH2 expression in CRC via stabilizing its mRNA by interacting with FUS, and via freeing its mRNA from miR-186-5p-induced silence. All in all, our observations demonstrated that SNHG14 serves as a facilitator in CRC through targeting EZH2-repressed EPHA7 by enhancing EZH2 via recruiting FUS and absorbing miR-186-5p, indicating a promising new road for CRC diagnosis and treatment.
Assuntos
Neoplasias Colorretais/genética , Neoplasias Colorretais/patologia , Proteína Potenciadora do Homólogo 2 de Zeste/metabolismo , Regulação Neoplásica da Expressão Gênica , RNA Longo não Codificante/metabolismo , Receptor EphA7/metabolismo , Animais , Sequência de Bases , Linhagem Celular Tumoral , Proliferação de Células/genética , Progressão da Doença , Proteína Potenciadora do Homólogo 2 de Zeste/genética , Epigênese Genética , Inativação Gênica , Humanos , Camundongos Endogâmicos BALB C , Camundongos Nus , Modelos Biológicos , Mutação/genética , Metástase Neoplásica , Fenótipo , Ligação Proteica , RNA Longo não Codificante/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Proteína FUS de Ligação a RNA/metabolismo , Transcrição Gênica , Carga Tumoral , Regulação para Cima/genéticaRESUMO
Objective The objective of this study was to explore the value of enhanced recovery surgery(ERAS)in perioperative period of laparoscopic assisted colorectal cancer surgery.Methods From November 2015 to July 2016,86 patients with colorectal cancer treated with colorectal surgery were divided into ERAS group and routine treatment group.All patients underwent laparoscopic radical resection of colorectal cancer.The operative situation,postoperative recovery and complications were analyzed in this study.Results There was no difference in the operation time and bleeding volume between the operation group and the conventional treatment group(P>0.05).The postoperative ventilation and defecation time in the ERAS group were earlier than those in the routine treatment group.The postoperative hospital stay and the postoperative pain score were lower than those in the routine treatment group.The rate of postoperative complications was lower than that in the routine treatment group(P<0.05).Conclusion The operation of laparoscopic colorectal cancer under the guidance of ERAS can help patients to recover from hospital,shorten the hospitalization time and reduce the cost of hospitalization.The further application of ERAS should be combined with various disciplines.
RESUMO
OBJECTIVE:To investigate the effects of SDZ on LOVO cell line and the expression of E-Cadherin and N-Cadherin. METHODS: The apoptosis of SDZ on growth of LOVO cells was observed under electron microscope and inverted microscope. The expression of E-Cadherin and N-Cadherin treated by SDZ were detected by RT-PCR. RESULTS: SDZ promoted the apoptosis of LOVO cell lines and increased the expression of E-Cadherin,however,it did no effect on the expression of N-Cadherin. CONCLUSION: SDZ can enhance the intercellular adhesiveness and degrade the capability of infiltration and metastasis of tumor cells.
RESUMO
ObjectiveTo explore the clinical characteristics and diagnosis of primary small intestinal tumor (PSIT). MethodsRetrospective analysis of the clinical and pathological data of the 112 PSIT cases was made. ResultsDuodenum was the most common site for PSIT (62 5%). Leiomyomas were most common benign tumors which were most likely found in ileum and jejunum. Adenocarcinoma was the most frequently seen malignant PSIT followed by lymphoma and leiomyosacroma. The chief method of diagnosis is barium meal X ray examination especially with the hypotonic contrast X ray examination. Endoscopy can increase the diagnostic rate. Superior mesenteric arteriography sometimes helps in determing the site of gastrointestinal haemorrhage. CT scan can be helpful in establishing diagnosis, preoperative classification and postoperative recurrences. Conclusion Duodenal adenocarcinoma is most common PSIT, followed by malignant lymphoma, liomyoma and leiomyosarcoma. Hypotonic contrast X ray examination is most effective in diagnosis, and locating of small bowel tumors. Superior mesenteric artery angiography and CT scanning are also helpful.
