Research Paper Volume 12, Issue 1 pp 462—480
Down expression of lnc-BMP1-1 decreases that of Caveolin-1 is associated with the lung cancer susceptibility and cigarette smoking history
- 1 The State Key Lab of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Xinzao, Guangzhou, China
- 2 The School of Public Health, The Institute of Environmental and Health of Dongguan Key Laboratory, Guangdong Medical University, Dongguan, China
- 3 The School of Public Health, The Institute for Chemical Carcinogenesis, Collaborative Innovation Center for Environmental Toxicity, Guangzhou Medical University, Guangzhou, China
- 4 Department of English and American Studies, Faculty of Languages and Literatures, Ludwig Maximilian University (LMU), Munich, Germany
- 5 Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong, China
- 6 The Fifth People’s Hospital of Dongguan, Dongguan, Guangdong, China
- 7 Department of Genetics, Medical College of Soochow University, Suzhou, China
- 8 Guangzhou Center for Disease Control and Prevention, Guangzhou, China
Received: April 29, 2019 Accepted: December 23, 2019 Published: January 4, 2020
https://doi.org/10.18632/aging.102633How to Cite
Abstract
Lnc-BMP1-1 is a lncRNA transcribed from SFTPC (surfactant associated protein C), a lung tissue specific gene encoding pulmonary-associated surfactant protein C (SPC) that is solely secreted by alveolar typeⅡ epithelial cells, among which the ones with SFTPC+ might be transformed into lung adenocarcinoma cells. Caveolin-1 (Cav-1) is a candidate tumor suppressor gene and is vital for coping with oxidative stress induced by cigarette smoke. When comparing lung cancer tissues with their adjacent normal tissues, the expression of lnc-BMP1-1 were decreased, especially in patients with cigarette smoking history (P=0.027), and positively associated with the expression of Cav-1 (P<0.001). When comparing to A549 cells transfected with empty vector (A549-NC cells), the expression level of Cav-1 in A549 cells with over-expressed lnc-BMP1-1 (A549-BMP cells) was increased along with the decreased level of HDAC2 protein. The drug sensitivity of A549-BMP cells to Doxorubicin hydrochloride (DOX) was increased; the growth and migration capability of A549-BMP cells were inhibited along with the decreased protein level of Bcl-2 and DNMT3a; the growth of tumor in nude mice injected with A549-BMP cells were inhibited, too. Furthermore, the lnc-BMP1-1 and Cav-1 expression was also down-regulated in the human bronchial epithelial (16HBE) cells treated with cigarette smoke extract (CSE).