Humans ; MicroRNAs ; genetics ; metabolism ; Neoplasm Metastasis ; genetics

Biomedical Research ; Humans ; MicroRNAs ; Neoplasm Invasiveness ; genetics ; Neoplasm Metastasis ; genetics

Animals ; Neoplasm Metastasis ; genetics ; Neoplasms, Experimental ; genetics ; pathology

Sp1 is a ubiquitous nuclear factor that plays a key role in maintaining basal transcription of 'house-keeping' genes. It has been demonstrated that Sp1 is involved in many cellular process, e.g.cell growth and differentiation. Sp1 plays an extremely important role in growth and metastasis of many tumors by regulating oncogenes, tumor suppressor genes, cell cycle control molecules, growth-related signal transductions, angiogenesis-related factors, as well as apoptosis. The expression of Sp1 and its activity are strictly regulated. Mechanisms include the modulation of Sp1 and interactions between Sp1 and other molecules. New treatment with Sp1 as the target will bring profound impacts on the strategy of clinical chemotherapy of tumor.
Apoptosis ; genetics ; Humans ; Neoplasm Metastasis ; genetics ; Neoplasms ; genetics ; Sp1 Transcription Factor ; genetics ; metabolism

Humans ; MicroRNAs ; genetics ; metabolism ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Neoplasms ; diagnosis ; genetics ; metabolism ; pathology ; therapy

MicroRNAs (miRNAs) a class of non-coding RNAs about 22 nt in size that are found in a wide range of organisms from plants, viruses to humans. MicroRNA has a wide range of biological functions. It can recruit related RNA enzymes and lead to mRNA degradation after binding to mRNA specificity, thus blocking the expression of protein encoding genes and then affecting their biological functions. In recent years, microRNA has been found to be closely related to the biological behaviors, such as the occurrence, development, invasion and metastasis of multiple human malignant carcinomas, and play a regulatory role in the above biological phenotypes. Lung cancer is the highest incidence of malignancy. The exact molecular mechanism of its occurrence and development has not been fully elucidated. Previous studies have shown that microRNA plays an important role in lung tumor suppressor gene inactivation, oncogene activation and epigenetics. At the same time, there are also reports that there is a significant difference in the expression of microRNA in patients with lung cancer and benign lung diseases. This differential expression provides a basis for the feasibility of microRNA as a diagnostic and pre biological marker for lung cancer.
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Humans ; Lung Neoplasms ; diagnosis ; genetics ; pathology ; MicroRNAs ; genetics ; Neoplasm Invasiveness ; Neoplasm Metastasis

Carcinoma, Hepatocellular ; genetics ; pathology ; Gene Expression Profiling ; Genomics ; Humans ; Liver Neoplasms ; genetics ; pathology ; Neoplasm Metastasis ; genetics ; Neoplasm Recurrence, Local ; genetics

Animals ; Humans ; Lung Neoplasms ; genetics ; pathology ; MicroRNAs ; genetics ; physiology ; Neoplasm Metastasis ; genetics ; pathology

Humans ; MicroRNAs ; genetics ; physiology ; Neoplasm Metastasis ; genetics ; pathology ; Neoplasms ; genetics ; pathology

Cancer metastasis, a complex and sequential network of cellular events involved in the migration and establishment of malignant cells from original site to distant foci, is an important and significant contributor to morbidity and mortality of cancer patients. Despite the clinical importance of cancer metastasis, its molecular and biochemical mechanism remains unclear. The identification of tumor suppressor gene confirmed that metastasis might involve the functional loss of genes that maintain the cellular differentiation optimally. Metastasis suppressor is defined by the ability to reduce the metastatic property of cancer cells without affecting its tumorigenesis. Since NM23 was first identified in 1988 as a metastasis suppressor, several metastasis suppressor genes have been identified and characterized. In this article, we review the complex and multi-step process of cancer metastasis and describe the recent progress of metastasis suppressors in the studies of identified. Consequently, we hope to introduce the new therapeutic target for the metastasis suppressors in cancer patients.
English Abstract ; *Genes, Tumor Suppressor ; Humans ; Neoplasm Metastasis/genetics/*physiopathology ; Nucleoside-Diphosphate Kinase/genetics/metabolism