The clinicopathological characteristics of the patients with breast cancer are presented inTable I

The clinicopathological characteristics of the patients with breast cancer are presented inTable I. == Table I. of Axl is correlated with the prognosis of luminal type breast cancer patients. Keywords: Axl, breast cancer, clinicopathological features, patient prognosis == Introduction == Breast cancer is one of the most common malignant cancers among women, and in some cases, is life threatening (1). The American Cancer Society has reported that new cases of invasive breast cancer in the USA will reach 246, 660 by 2016, accounting for 29% ofde novomalignancies among women, and breast cancer-related mortality is estimated to reach 40, 450 in 2016 (2). In China, breast cancer is the most prevalent cancer in women, and the number of new cases diagnosed is increasing every year (3). Developing novel biomarkers of breast cancer may improve knowledge of how breast cancer develops, and potentially allow more efficient therapeutic strategies to be implemented. Tyrosine-protein kinase receptor UFO (Axl), belongs to the TAM family of receptor tyrosine kinases, which consists of Axl, tyrosine-protein kinase receptor Tyro3, and tyrosin protein kinase Mer. Axl is a transforming gene that was originally isolated from patients with chronic myelogenous leukemia (4). The growth arrest specific gene 6 (Gas6) is a ligand of Axl, and the binding of Gas6 to Axl results in the dimerization of Gas6/Axl complexes, activating intracellular tyrosine kinase, and triggering a series of signal transduction and biological effects (5). It has previously been reported that Axl participates in signaling pathways related to carcinogenesis and cancer development, such as the phosphatidylinositol 3-kinase/protein kinase B pathway, the Janus kinase/signal transducers and activators Dolasetron Mesylate of transcription pathway, and nuclear factor-B signaling pathway (68). It has also been demonstrated that Axl is an underlying oncogenic factor involved in the epithelial-mesenchymal transition, which allows epithelial cells to undergo cell migration and invasion, and thus contribute to tumor metastasis (9). Axl has been implicated in different types of human cancer and is related to their development and clinical prognosis. These include: Gastric (10), lung (11), bladder (12), thyroid (13), pancreatic (14) and colon (15) cancer. Methods of blocking Axl expression by RNA silencing or Axl inhibition have been studiedin vivoandin vitro. The results of these studies suggest that Axl is a promising target in cancer therapy. For example , LY2801653, a multi kinase inhibitor of the hepatocyte growth factor receptor (MET) and Axl, is capable of inhibiting cell migration, proliferation and anti-tumor activities (16). The effects of inhibiting Axl expression by Amuvatinib (MP470) have been studied in gastrointestinal stromal tumors and breast cancer (17). Furthermore, Foretinib, an experimental multi kinase inhibitor targeting Dolasetron Mesylate MET, vascular endothelial growth factor receptor 2, and Axl, may inhibit the proliferation and survival of colorectal Rabbit Polyclonal to Retinoblastoma cancer cells (18). The relationship between Axl and breast cancer has been widely researched. However , the clinicopathological significance and the prognostic role of Axl in breast cancer remains controversial, and there have been few studies investigating the exact role of Axl in breast cancer. The present study aimed to measure Axl expression in breast cancer tissue and noncancerous lesions by immunohistochemical staining, and to explore the prognostic value of Axl in patients with breast cancer. == Materials and methods == == == == Patients and surgical specimens == Specimens were obtained from 60 female patients (average age, 50. 601. 36) undergoing surgery at the Department of Breast Surgery, the First Affiliated Hospital, Henan University of Science and Technology, between January and August 2010. Informed consent was obtained from all the patients to use the surgical specimens for scientific research. The specimens included 60 situations of breast infiltrative ductal cancer tissue and fourty cases of benign breast lesions (25 mammary dysplasia and 15 breast fibroadenoma). The median age of sufferers at breast cancer diagnosis was 48 years old (range, 2880 years). None of the sufferers received chemoradiotherapy or endocrine therapy prior to surgery, and there were simply no obvious abnormalities in the preoperative function on the heart, lungs, liver, or kidney of any sufferers. There was likewise no faraway metastasis discovered in any sufferers before businesses were performed. The clinicopathological characteristics on the patients with breast cancer will be presented inTable I. == Table I actually. == Affected person clinicopathological features. TNM, Tumor-Node-Metastasis; ER, estrogen receptor; PAGE RANK, Dolasetron Mesylate progesterone receptor; HER-2, man epidermal development factor receptor 2; Ki-67, antigen Ki-67. Postoperative treatment was performed according to the Nationwide Comprehensive Tumor Network (NCCN) guidelines. The tissue specimens were fixed.