Tubulin Alpha-1b as a Potential Biomarker for Lung Adenocarcinoma Diagnosis and Prognosis

被引:3
作者
Pang, Xue-Li [1 ,2 ]
Du, Hong-Fei [1 ,2 ]
Nie, Fang [3 ]
Yang, Xiang-Gui [1 ,2 ]
Xu, Ying [1 ,2 ]
机构
[1] Chengdu Med Coll, Sch Clin Med, Chengdu, Peoples R China
[2] Chengdu Med Coll, Dept Clin Lab, Affiliated Hosp 1, 278 Baoguang Rd, Chengdu 610500, Sichuan, Peoples R China
[3] Second Peoples Hosp Chengdu, Dept Clin Lab, Chengdu, Peoples R China
关键词
lung adenocarcinoma; tubulin alpha-1b; tumor biomarker; diagnosis; prognosis; CANCER; EXPRESSION; ANTIBODIES; RNA;
D O I
10.1177/15330338231178391
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Background: Because lung cancer is the main cause of cancer deaths and lung adenocarcinoma (LUAD) accounts for more than 40% of all lung malignancies, it is essential to develop clinically useful biomarkers for the disease. The aim of this investigation is to assess the potential application of tubulin alpha-1b (TUBA1B) as a biomarker for diagnosing and monitoring the outcome of LUAD. Methods: The clinical data of the LUAD patients was retrospectively analyzed. Immunohistochemistry (IHC) analysis of a tissue microarray containing 90 LUAD cases was implemented to examine the expression of TUBA1B. The protein and mRNA levels of TUBA1B in serum were detected by enzyme-linked immunosorbent assay (ELISA) and quantitative real-time PCR (qRT-PCR) analysis respectively. UALCAN was employed to confirm the expression levels and survival probability of TUBA1B in LUAD patients. Results: Compared to adjacent non-cancerous tissues in the microarray, the expression of TUBA1B in LUAD tissues was much higher. The expression of TUBA1B in LUAD was statistically correlated with lymph node status (P = .031). Moreover, patients with higher TUBA1B expression had shorter overall survival (P < .0001). Furthermore, cox multi-factor analysis also suggested that TUBA1B may be an independent predictor for LUAD prognosis (P = .030). The results of TCGA data analysis by UALCAN were consistent with the microarray results, except for that TUBA1B was also significantly correlated with clinical tumor stages. Protein levels of TUBA1B in serum were obviously elevated in LUAD patients than control (P < .0001), and the area under the ROC curve was 0.99. TUBA1B also showed better sensitivity of 92.9% for LUAD than common clinical biomarkers. Conclusion: TUBA1B may be a non-invasive prognostic and diagnostic biomarker for LUAD patients.
引用
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页数:10
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