PMID- 35821094 OWN - NLM STAT- MEDLINE DCOM- 20220928 LR - 20231213 IS - 1530-0307 (Electronic) IS - 0023-6837 (Linking) VI - 102 IP - 10 DP - 2022 Oct TI - p21-activated kinase 2 binds to transcription factor SOX2 and up-regulates DEK to promote the progression of lung squamous cell carcinoma. PG - 1109-1120 LID - S0023-6837(22)00118-0 [pii] LID - 10.1038/s41374-022-00808-5 [doi] AB - Lung squamous cell carcinoma (LSCC) is a prevalent and progressive subtype of lung cancer. This study aimed to substantiate the regulatory effect of the PAK2/SOX2/DEK axis on the LSCC development. LSCC tissues (n = 83) and adjacent normal tissues were collected and SOX2 expression was determined by qRT-PCR and Western blotting. Correlation between SOX2 expression and the prognosis of LSCC patients was then explored utilizing Kaplan-Meier analysis. Co-immunoprecipitation and glutathione-S-transferase pull-down assays were conducted to validate the binding of SOX2 to DEK. Gain- and loss- of function assays were then performed on LSCC cells, with CCK-8 and Transwell assays applied to detect the malignant behaviors of cells. A mouse xenograft model of LSCC was further established for in vivo validation. The expression levels of SOX2, PAK2 and DEK were up-regulated in LSCC tissues and cells. SOX2 overexpression was correlated with poor prognosis of LSCC patients. Knockdown of SOX2 weakened the viability and the migratory and invasive potential of LSCC cells. Further, PAK2 directly interacted with SOX2. PAK2 overexpression accelerated the malignant phenotypes of LSCC cells through interplay with SOX2. Moreover, SOX2 activated the expression of DEK, and silencing DEK attenuated the malignant behaviors of LSCC cells. In conclusion, PAK2 could bind to the transcription factor SOX2 and thus activate the expression of DEK, thereby driving the malignant phenotypes of LSCC cells both in vivo and in vitro. CI - (c) 2022. The Author(s), under exclusive licence to United States and Canadian Academy of Pathology. FAU - Xie, Shiguang AU - Xie S AD - Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, P.R. China. FAU - Wan, Xuan AU - Wan X AD - Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, P.R. China. FAU - Chen, Shuyun AU - Chen S AD - Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, P.R. China. FAU - Hu, Yan AU - Hu Y AD - Department of Orthopedics, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, P.R. China. ndyfy00494@ncu.edu.cn. FAU - Liu, Xiaoming AU - Liu X AUID- ORCID: 0000-0002-8643-3477 AD - Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, 330006, Nanchang, P.R. China. ndyfy00620@ncu.edu.cn. LA - eng PT - Journal Article DEP - 20220711 PL - United States TA - Lab Invest JT - Laboratory investigation; a journal of technical methods and pathology JID - 0376617 RN - 0 (Chromosomal Proteins, Non-Histone) RN - 0 (DEK protein, human) RN - 0 (MicroRNAs) RN - 0 (Oncogene Proteins) RN - 0 (Poly-ADP-Ribose Binding Proteins) RN - 0 (SOX2 protein, human) RN - 0 (SOXB1 Transcription Factors) RN - EC 2.7.11.1 (PAK2 protein, human) RN - EC 2.7.11.1 (p21-Activated Kinases) RN - GAN16C9B8O (Glutathione) RN - M03GIQ7Z6P (Sincalide) SB - IM MH - Animals MH - *Carcinoma, Non-Small-Cell Lung/genetics MH - *Carcinoma, Squamous Cell/metabolism MH - Cell Line, Tumor MH - Cell Proliferation/genetics MH - Chromosomal Proteins, Non-Histone/genetics/metabolism MH - Gene Expression Regulation, Neoplastic MH - Glutathione/metabolism MH - Humans MH - *Laryngeal Neoplasms/genetics/pathology MH - Lung/metabolism MH - *Lung Neoplasms/genetics/metabolism MH - Mice MH - *MicroRNAs/genetics MH - Oncogene Proteins MH - Poly-ADP-Ribose Binding Proteins/genetics/metabolism MH - SOXB1 Transcription Factors MH - Sincalide/genetics/metabolism MH - p21-Activated Kinases/genetics/metabolism EDAT- 2022/07/13 06:00 MHDA- 2022/09/28 06:00 CRDT- 2022/07/12 23:52 PHST- 2021/01/18 00:00 [received] PHST- 2022/05/11 00:00 [accepted] PHST- 2022/04/28 00:00 [revised] PHST- 2022/07/13 06:00 [pubmed] PHST- 2022/09/28 06:00 [medline] PHST- 2022/07/12 23:52 [entrez] AID - S0023-6837(22)00118-0 [pii] AID - 10.1038/s41374-022-00808-5 [doi] PST - ppublish SO - Lab Invest. 2022 Oct;102(10):1109-1120. doi: 10.1038/s41374-022-00808-5. Epub 2022 Jul 11.