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. 2023 Mar 3;102(9):e33143.
doi: 10.1097/MD.0000000000033143.

Expression and prognostic impact of DNA-PK in human lung cancer

Anna Tirilomi  1 , Omar Elakad  2 , Sha Yao  2 , Yuchan Li  2 , Marc Hinterthaner  1 , Bernhard C Danner  1 , Philipp Ströbel  2 , Theodor Tirilomis  1 , Hanibal Bohnenberger  2 , Alexander von Hammerstein-Equord  1
Affiliations

Expression and prognostic impact of DNA-PK in human lung cancer

Anna Tirilomi et al. Medicine (Baltimore). .

Abstract

Among all cancer patient's lung cancer is the leading cause of death. Prognostic biomarkers continue to be investigated for the detection and stratification of lung cancer for clinical use. The DNA-dependent protein kinase is involved in mechanisms of DNA damage repair. Deregulation and overexpression of DNA-dependent protein kinase is associated with poor prognosis in various tumor entities. In this study, we investigated the expression of DNA-dependent protein kinase in relation to clinicopathological features and overall survival in patients with lung cancer. By immunohistochemistry, expression of DNA-dependent protein kinase was analyzed in 205 cases of lung cancer; 95 cases of adenocarcinoma, 83 cases of squamous cell lung carcinoma and 27 cases of small cell lung cancer and correlated with clinicopathological characteristics as well as patient's overall survival. In patients with adenocarcinoma, a significant correlation between strong expression of DNA-dependent protein kinase and worse overall survival was found. No significant association was observed in patients with squamous cell lung carcinoma and small cell lung cancer. Strong detection of DNA-dependent protein kinase expression was most evident in small cell lung cancer (81.48 %), followed by squamous cell lung carcinoma (62.65 %) and adenocarcinoma (61.05 %). In our study, expression of DNA-dependent protein kinase was associated with poor overall survival in patients with adenocarcinoma. DNA-dependent protein kinase could serve as a new prognostic biomarker.

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Conflict of interest statement

The authors have no conflicts of interest to disclose.

Figures

Figure 1.
Figure 1.
Representative immunohistochemical staining with negative, (A) weak, (B) or strong, (C) immunostaining of DNA-PK in lung cancer samples. Scale bar: 100 µm, and (D) DNA-PK expression sorted by entity and categorized as negative, weak and strong expression. DNA-PK = DNA-dependent protein kinase.
Figure 2.
Figure 2.
Kaplan–Meier analysis of overall survival in patients with AC, (A) SQCLC, (B) SCLC, and (C) The P value is from a log-rank test. AC = adenocarcinoma, SCLC = small cell lung cancer, SQCLC = squamous cell lung carcinoma.
See this image and copyright information in PMC

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