1. State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou City, Guangdong Province, P.R. China;
2. Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou City, Guangdong Province, P.R. China;
3. Department of Molecular Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA;
4. State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou City, Guangdong Province, P.R. China;
5. Department of Biological Sciences, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
* These authors contributed equally to this work and share the first authorship.
Lung cancer ranks as the most common and lethal malignancy in America and worldwide. APOBEC3B is a newly identified DNA cytosine deaminase, which is supposed to function as a major source of DNA mutation in many different tumors. In this study, we combine the data of online databases and two hundred and twenty-one primary non-small-cell lung carcinoma (NSCLC) specimens from Sun Yat-sen University Cancer Center to investigate, for the first time, the clinical role of APOBEC3B in lung cancer. We found that the APOBEC3 expression was commonly elevated in NSCLC tissues and overexpression of APOBEC3B was correlated with unfavorable prognosis of the patients with NSCLC. Furthermore, APOBEC3B expression was associated with nodal status, TNM staging and adjuvant chemotherapy of the patients with NSCLC. Further research is warranted.
Keywords: APOBEC3B, non-small-cell lung cancer, immunohistochemistry, prognosis.