RESUMO
The invasion and metastasis of malignant tumor cells lead to normal tissue destruction and are major prognostic factors for many malignant cancers. Long non-coding RNA (LncRNA) is associated with occurrence, development and prognoses of non-small cell lung cancer (NSCLC), but its mechanisms of action involved in tumor invasion and metastasis are not clear. In this study, we screened and detected the expression of LncRNA in two NSCLC lines 95D and 95C by using high throughput LncRNA chip. We found that TATDN1 (Homo sapiens TatD DNase domain containing 1, TATDN1), one of LncRNAs, was highly expressed in 95D cells and NSCLC tumor tissues compared to 95C cells. Knockdown of TATDN1-1 by shRNA significantly inhibited cell proliferation, adhesion, migration and invasion in 95D cells. Further mechanism study showed that TATDN1 knockdown suppressed the expression of E-cadherin, HER2, ß-catenin and Ezrin. Moreover, knockdown TATDN1 also inhibited tumor growth and metastasis in a 95D mouse model in vivo by inhibiting ß-catenin and Ezrin. These data indicate that TATDN1 expression is associated with 95D cells' higher potential of invasion and metastasis, and suggest that TATDN1 may be a potential prognostic factor and therapeutic target for NSCLCs.
Assuntos
Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patologia , RNA Longo não Codificante/genética , Animais , Caderinas/metabolismo , Linhagem Celular Tumoral , Proteínas do Citoesqueleto/metabolismo , Humanos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Invasividade Neoplásica/genética , Interferência de RNA , RNA Longo não Codificante/metabolismo , RNA Interferente Pequeno/genética , Receptor ErbB-2/metabolismo , beta Catenina/metabolismoRESUMO
Objective To discuss the health hazards of nurses in the operating room,find out their self-protection awareness,give them defensive education to reduce the damage done to nurses in operating room. Methods Field survey of health hazards in operating room was carried out to find out nurses' self- protection awareness and gave them health propaganda and education. Results There were many health hazards in op-erating room,but nurses' self-protection awareness was low and they knew little about defensive knowledge. Conclusions The curren situation is there are so many disadvantages but nurses in the operating room know little about them,so it is necessary to give them defensive education to protect themselves.
