PMID- 32753843 OWN - NLM STAT- MEDLINE DCOM- 20210604 LR - 20220416 IS - 1177-8881 (Electronic) IS - 1177-8881 (Linking) VI - 14 DP - 2020 TI - The Expression and Therapeutic Potential of Checkpoint Kinase 2 in Laryngeal Squamous Cell Carcinoma. PG - 2613-2622 LID - 10.2147/DDDT.S245267 [doi] AB - INTRODUCTION: Laryngeal squamous cell carcinoma (LSCC) is the most common histological subtype of laryngeal cancer. The involved molecular mechanisms and suitable therapeutic targets for LSCC still need to be further investigated. Checkpoint kinase 2 (CHK2) participates in several cellular physiology pathways and plays a role in tumor progression. However, the roles of CHK2 in LSCC remain unclear. METHODS: mRNA expression data were obtained from The Cancer Genome Atlas (TCGA) database, and bioinformatic analysis was performed. Western blot and immunohistochemical analyses were conducted to detect protein expression. MTS assays were performed to examine cell growth of LSCC-derived cell lines. RESULTS: In the present study, we found that both active form of CHK2 and total CHK2 protein expressions were up-regulated in LSCC tissues. Positive expression of CHK2 was closely associated with advanced clinical features and poor prognosis. Moreover, potential CHK2-involving bioprocesses and signaling pathways were analyzed. In addition, repressed proliferation of LSCC cells was induced by CHK2 inhibitor. DISCUSSION: Taken together, our findings elucidated that CHK2 may act as an oncogenic factor in LSCC, suggesting a potential target for clinical treatment. CI - (c) 2020 Tian et al. FAU - Tian, Ying AU - Tian Y AD - Department of Otorhinolaryngology, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China. FAU - Wang, Yan AU - Wang Y AD - Department of Otorhinolaryngology, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China. FAU - Xu, Shan AU - Xu S AD - Department of Otorhinolaryngology, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China. FAU - Guan, Chao AU - Guan C AD - Department of Otorhinolaryngology, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China. FAU - Zhang, Qingfu AU - Zhang Q AD - Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, People's Republic of China. FAU - Li, Wei AU - Li W AUID- ORCID: 0000-0001-9368-3397 AD - Department of Otorhinolaryngology, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China. LA - eng PT - Journal Article DEP - 20200706 PL - New Zealand TA - Drug Des Devel Ther JT - Drug design, development and therapy JID - 101475745 RN - 0 (Enzyme Inhibitors) RN - 0 (RNA, Messenger) RN - EC 2.7.1.11 (Checkpoint Kinase 2) RN - EC 2.7.11.1 (CHEK2 protein, human) SB - IM MH - Aged MH - Aged, 80 and over MH - Carcinoma, Squamous Cell/drug therapy/*metabolism/pathology MH - Cell Proliferation/drug effects MH - Checkpoint Kinase 2/analysis/antagonists & inhibitors/*metabolism MH - Enzyme Inhibitors/pharmacology MH - Female MH - Humans MH - Laryngeal Neoplasms/drug therapy/*metabolism/pathology MH - Male MH - Middle Aged MH - RNA, Messenger/analysis/antagonists & inhibitors/metabolism MH - Tumor Cells, Cultured PMC - PMC7351626 OTO - NOTNLM OT - BML-277 OT - checkpoint kinase 2 OT - laryngeal squamous cell carcinoma OT - tumor growth COIS- The authors report no conflicts of interest in this work. EDAT- 2020/08/06 06:00 MHDA- 2021/06/05 06:00 PMCR- 2020/07/06 CRDT- 2020/08/06 06:00 PHST- 2020/01/08 00:00 [received] PHST- 2020/06/12 00:00 [accepted] PHST- 2020/08/06 06:00 [entrez] PHST- 2020/08/06 06:00 [pubmed] PHST- 2021/06/05 06:00 [medline] PHST- 2020/07/06 00:00 [pmc-release] AID - 245267 [pii] AID - 10.2147/DDDT.S245267 [doi] PST - epublish SO - Drug Des Devel Ther. 2020 Jul 6;14:2613-2622. doi: 10.2147/DDDT.S245267. eCollection 2020.