Upregulated mRNA expression of mTOR in surgically resected early stage non-small cell lung carcinoma: a potential molecular targeted therapy
Journal Title: Current Thoracic Surgery - Year 2017, Vol 2, Issue 1
Abstract
Background: Non-small cell lung cancer (NSCLC) comprises about 85% of all lung cancers. Although many attempts for early detection and treatment, prognosis of NSCLC is still poor. In recent years the pathways and the genes that play role in lung cancer development were researched widely. PI3K/AKT/MTOR which is thought to be efficacious in the development of many cancer which controls the expression of many genes playing an important role in cell proliferation, metastasis, resistance to apoptosis and angiogenesis. Also the increase in CCND1 expression was shown in several cancer types. The aim of this study is to search the mRNA expression profile of AKT, MTOR and CCND1 genes which has been thought to play role in NSCLC development, and their expression in different pathological stages and histological types of the disease. Materials and Methods: Forty-four NSCLC patients who didn’t get neoadjuvant therapy were included in this study. The samples from tumor and matched normal lung tissue were obtained from resection specimens (lobectomy or pneumonectomy). Total cellular RNA was isolated from the samples. The mRNA expression levels of AKT1, mTOR and CCND1 genes were measured by quantitative real-time polymerase chain reaction (qPCR). Results: Our findings revealed a statistically significant increase of mTOR expression on mRNA levels (P < 0.05). Although AKT and CCND1 expression slightly increased in malign tissues, these changes in the expression were not significant (P > 0.05). The mRNA expression of mTOR was also upregulated and it was statistically significant for early stage disease and adenocarcinoma subtype (P < 0.05). Conclusions: Inhibition of mTOR gene expression at mRNA level might be potential target for future treatment strategies of NSCLC.
Authors and Affiliations
Muhammet Sayan, Ali Çelik, Şevki Mustafa Demiröz, Hacer İlke Önen, Nalan Akyürek, Ece Konaç, İsmail Cüneyt Kurul, Abdullah İrfan Taştepe
Keywords
Related Articles
- EP ID EP292654
- DOI 10.26663/cts.2017.0002
- Views 93
- Downloads 0
Do we need a new SUVmax threshold value for the evaluation of mediastinal lymph nodes?
Background: Mediastinal lymph node involvement is the most important factor determining the treatment and the prognosis with non-small cell lung cancer (NSCLC). In our study, the role of PET-CT was assessed in the evalua...
Inflammatory myofibroblastic tumor: a case of a rare tumor of lung
Inflammatory myofibroblastic tumor (IMT) is a rare thoracic lesion, the diagnosis of which should be supported by histological and immunochemical examinations. Although this is known as a benign tumor, it should be compl...
The differential diagnostic role of PET-CT in sarcoidosis and lymphoma
Background: Mediastinal lymphadenopathy (MLAP) is observed in various conditions of malignant or benign diseases. The two common diseases leading to MLAP are mediastinal lymphomas and sarcoidosis. The aim of study is to...
A rare post-operative thoracic surgery complication: chylothorax
Background: Chylothorax is defined as the accumulation of chyle in the pleural space. In this report, we discuss the demographic features of patients with post-operative chylothorax, and the treatment approaches used to...
Rapidly growing chest wall tumor of a pregnant woman: Ewing’s sarcoma
The incidence of coexistence of pregnancy and malignancy is approximately 1 in 1000-3000. Soft tissue sarcomas compose a very little portion of malignancies and Ewing’s sarcoma is one of these tumors, which is very rare,...