Arife Zeybek*, Necdet Öz, Serdar Kalemci , Tuba Edgünlü, Mehmet Kızıltuğ, Kürşad Tosun, Mustafa Tunç, Leyla Tekin and Mehmet Emin Erdal
Background: We aimed to explore biological functions of differentially expressed miRNAs during carcinogenesis, to identify miRNAs dysegulations involved in DNA repair mechanisms, and to evaluate potential of miRNAs as prognostic and diagnostic biomarkers for early lung adenocarcinomas (LAC).Methods: We obtained 21 LAC and paired adjacent normal formalin-fixed, paraffin-embedded lung tissues from patients who underwent curative resection for stage I LAC. We compared expression levels of eight miRNAs involved in DNA repair mechanism between LAC and adjacent tissues. Results: Expressions of Hsa-miR-9-5p, hsa-miR-24-3p, hsa-miR-125a-3p, hsa-miR-125b-5p, hsa-miR-155-5p, and hsa-let-7a-5p were significantly up-regulated in stage I LAC tissues compared with those in adjacent tissues. In addition, expressions of hsa-mir-9-5p, hsa-mir-24-3p, hsa-mir-125a-3p, hsa-mir-125b-5p, and hsa-mir-155-5p were significantly up-regulated in stage Ia LAC tissues, whereas expressions of hsa-mir-125a-3p and hsa-mir-125b-5p were significantly up-regulated in stage Ib LAC tissues. Receiver operating characteristic (ROC) analysis revealed that AUROC of hsa-mir-125b-5p was 0.875 (P < 0.001). Conclusion: Expression of hsa-mir-125b-5p could be used to distinguish LAC from adjacent tissues. Our result suggests that hsa-mir125b-5p can be a prognostic and diagnostic biomarker for LAC.
Carcinoma, Non-Small Cell Lung Cancer, Adenocarcinoma, Micro RNA, Mir-125b
Mugla Sıtkı Koçman University, School of Medicine, Department of Thoracic Surgery , Mugla , Private Medstar Antalya Hospital , Department of Thoracic Surgery, Antalya , Private Tınastepe Hospital , Chest Disease Clinic, Izmir, Mugla Sıtkı Koçman University, School of Medicine, Department of Medical Biology , Mugla , Mersin University, School of Medicine, Department of Medical Biology, Mersin , Siena College, Science School , Newyork , Private Medical Park Hospital, Department of Medical Pathology, Antalya , Mugla Sıtkı Koçman University, School of Medicine, Department of Medical Pathology , Mugla , Mersin University, School of Medicine, Department of Medical Biology, Mersin