Cancer Management and Research (Dec 2019)
PRPH2 Activates Hippo Signalling and Suppresses the Invasion and Anoikis Inhibition of Laryngeal Cancer
Abstract
KaiFeng Dong,1 HaiTao Xue,1 JianGang Cheng,2 Jing Su,1 Dan Li,1 JiHua Zhang,1 HaoLei Zhang1 1Department of Ear-Nose-Throat, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031, People’s Republic of China; 2Department of Ear-Nose-Throat, Shijiazhuang Ping’an Hospital, Shijiazhuang, Hebei 050021, People’s Republic of ChinaCorrespondence: HaiTao XueDepartment of Ear-Nose-Throat, The First Hospital of Hebei Medical University, Donggang Road No. 89, Yuhua District, Shijiazhuang, Hebei 050031, People’s Republic of ChinaTel +86-311-85917072Email [email protected]: Laryngeal cancer is the most common head and neck cancer worldwide. It is urgent to identify the mechanisms underlying laryngeal cancer pathogenesis. In the present study, we investigated the biological functions of Peripherin 2 (PRPH2) in laryngeal cancer and uncovered the molecular mechanism underlying this disease.Methods: Laryngeal cancer tissues were used to analyze the expression of PRPH2. In vitro transwell matrigel invasion assay and annexin V anoikis assay in laryngeal cancer cells were conducted to investigate PRPH2 related biological functions. Quantitative real-time PCR and Western blotting were performed to investigate the expression and mechanism of PRPH2 in laryngeal cancer.Results: We found that the expression of PRPH2 was significantly downregulated in laryngeal cancer tissues. Overexpression of PRPH2 suppressed the invasion and anoikis inhibition of laryngeal cancer cells. Furthermore, PRPH2 overexpression increased the phosphorylation of YAP and LATS1 and decreased the activities of Rho GTPases, while PRPH2 knockdown had opposite effects. Inhibitors of the Hippo pathway abrogated PRPH2 knockdown-induced laryngeal cancer cell invasion and anoikis inhibition.Discussion: These results suggested that PRPH2 suppresses laryngeal cancer cell invasion and anoikis inhibition by activating Hippo signalling. PRPH2 may serve as a potential therapeutic target for laryngeal cancer in the future.Keywords: PRPH2, hippo signaling, laryngeal cancer, invasion, anoikis inhibition
