RESUMEN
BACKGROUND: Recently, long intergenic non-coding RNA 01296 (LINC01296) has been demonstrated to regulate the initiation and progression of several cancers, but the functions of LINC01296 in ovarian cancer still remain unclear. The objective of our study was to determine the expression, biological roles, and clinical significance of LINC01296 in ovarian cancer. METHODS: LINC01296 expression was measured in ovarian cancer tissues or cell lines. Next, the relationships between LINC01296 levels and the clinical factors of ovarian cancer, such as progression-free survival and overall survival were analyzed. Additionally, cell proliferation, migration and invasion capacities, apoptosis, cell cycle distribution were investigated after silencing of LINC01296. To confirm whether LINC01296 mediates EMT initiation in ovarian cancer cells, the effect of LINC01296 silence on E-cadherin, N-cadherin and vimentin was assessed in SKOV3 and OVCAR3 cells. RESULTS: We found that LINC01296 was over-expressed in ovarian cancer tissues and cell lines, when comparing with adjacent normal tissue samples and normal cells. Higher LINC01296 expression was significantly correlated with shorter progression-free survival and overall survival. For the functional experiments, knockdown of LINC01296 suppressed cell proliferation, inhibited colony formation ability, abrogated cell migration and invasion potential, and enhanced cell apoptosis. Cell cycle analysis suggested that LINC01296 positively regulated cell cycle progression in ovarian cancer cells. Moreover, western blotting analysis displayed that knockdown of LINC01296 significantly increased E-cadherin, but reduced N-cadherin and vimentin expressions in SKOV3 and OVCAR3 cells, compared with no-transfection cells. CONCLUSIONS: LINC01296 plays an important role in promoting the progression of ovarian cancer. Over-expression of LINC01296 might function as an indicator for diagnosis and prognosis of ovarian cancer patients.
Asunto(s)
Proliferación Celular/genética , Invasividad Neoplásica/genética , Neoplasias Ováricas/genética , ARN Largo no Codificante/genética , Apoptosis/genética , Ciclo Celular/genética , Línea Celular Tumoral , Movimiento Celular/genética , Progresión de la Enfermedad , Supervivencia sin Enfermedad , Transición Epitelial-Mesenquimal/genética , Femenino , Regulación Neoplásica de la Expresión Génica/genética , Silenciador del Gen , Humanos , Invasividad Neoplásica/patología , Neoplasias Ováricas/patología , Pronóstico , ARN Largo no Codificante/antagonistas & inhibidoresRESUMEN
Embryonic stem (ES) cells are widely used for different purposes, including gene targeting, cell therapy, tissue repair, organ regeneration, and so on. However, studies and applications of ES cells are hindered by ethical issues regarding cell sources. To circumvent ethical disputes, great efforts have been taken to generate ES cell-like cells, which are not derived from the inner cell mass of blastocyst-stage embryos. In 2006, Yamanaka et al. first reprogrammed mouse embryonic fibroblasts into ES cell-like cells called induced pluripotent stem (iPS) cells. About one year later, Yamanaka et al. and Thomson et al. independently reprogrammed human somatic cells into iPS cells. Since the first generation of iPS cells, they have now been derived from quite a few different kinds of cell types. In particular, the use of peripheral blood facilitates research on iPS cells because of safety, easy availability, and plenty of cell sources. Now iPS cells have been used for cell therapy, disease modeling, and drug discovery. In this review, we describe the generations, applications, potential issues, and future perspectives of iPS cells.
