Tumorigenesis, in general, is originated from two types of gene alterations, a tumor suppressor gene and a proto-oncogene/oncogene. A tumor suppressor gene, or anti-oncogene, is a gene that protects a cell from tumorigenesis. When this gene mutates, it causes a loss or reduction in its protection[1]. A proto-oncogene is a normal gene coding proteins which regulate cell growth and differentiatio...

The expression of c-sis proto-oncogene in bronchoalveolar mononuclear cells was studied in seven patients with pulmonary sarcoidosis. By means of nuclear run on transcription assay, the transcriptional level of c-sis proto-oncogene in bronchoalveolar mononuclear cells was investigated. Expression of c-sis proto-oncogene in bronchoalveolar mononuclear cells was enhanced. Enhancement of c-sis tra...

INTRODUCTION HER-2 is a proto-oncogene of the tyrosine kinase receptor family on chromosome 17. Overexpression of this gene affects the growth and prognosis of some tumors. This study was performed to evaluate the expression of the HER-2 gene in patients with prostate cancer and its relation with the Gleason score. MATERIALS AND METHODS Pathology specimens of all men with prostate cancer who ...

BACKGROUND & OBJECTIVES An association between over-expression of proto-oncogene Her-2/neu and resistance to tamoxifen in estrogen receptor (ER) positive, primary and metastatic breast cancer has been suggested. HR+/Her-2/neu+ patients have a poor response to endocrine therapy, making this group a matter of debate. The present study was carried out to examine whether Her-2/neu expression in bre...

Oncogene pdf Advances in science have improved our knowledge of the inner workings of cells, the basic building blocks of the body.viral oncogenes. proto oncogene pdf The latter were previously characterized as the specific genetic elements capable of conferring the tumorigenic properties to the ribonucleic.Describe how the HER2neu oncogene is activated in breast cancer. oncogene addiction pdf ...

BACKGROUND The RET proto-oncogene encodes a protein that belongs to the tyrosine kinase growth factor receptor family. Germline point mutations in RET are found in individuals with multiple endocrine neoplasia (MEN) syndromes, and gene rearrangements have been reported in papillary thyroid cancers. We recently identified transcripts of the RET proto-oncogene in human prostate cancer xenografts ...

The RET proto-oncogene encodes a receptor tyrosine kinase for transforming growth factor-beta-related neurotrophic factors, which include GDNF and neurturin. The expression of RET proto-oncogene was detected in several tissues, such as spleen, thymus, lymph nodes, salivary gland, and spinal cord, and in several neural crest-derived cell lines. RET expression in the thyroid gland was reported to...