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A non-canonical role of endothelin converting enzyme 1 (ECE1) in promoting lung cancer development via directly targeting protein kinase B (AKT).
Chen, Li; Lu, Yikai; Zhao, Mengmeng; Xu, Junfang; Wang, Yan; Xu, Qinghua; Cao, Yajuan; Liu, Haipeng.
Afiliação
  • Chen L; Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
  • Lu Y; Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
  • Zhao M; Research Center of Translational Medicine, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, China.
  • Xu J; Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
  • Wang Y; Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
  • Xu Q; Department of Radiation Oncology, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China.
  • Cao Y; Department of Integrated Traditional Chinese and Western Medicine, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China.
  • Liu H; Central Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
J Gene Med ; 26(1): e3612, 2024 Jan.
Article em En | MEDLINE | ID: mdl-37897251
BACKGROUND: Lung cancer is the second most common malignancy in the world, and lung adenocarcinoma (LUAD) in particular is the leading cause of cancer death worldwide. Endothelin converting enzyme 1 (ECE1) is a membrane-bound metalloprotease involved in endothelin-1 (ET-1) processing and regulates vasoconstriction. However, very few studies have reported the involvement of ECE1 in regulating tumor cell proliferation, and the mechanism remains poorly understood. Therefore, we aimed to determine the role of ECE1 in lung cancer development. METHODS: The Cancer Genome Atlas database and Kaplan-Meier plotter were used to assess the association between ECE1 and lung cancer. The expression of ECE1 was detected using immunohistochemistry staining and western blotting. A variety of in vitro assays were performed to evaluate the effects of ECE1 on the colony formation, proliferation, migration and invasion using ECE1 knockdown lung cancer cells. The gene expression profiles regulated by ECE1 were investigated by RNA sequencing. An immunoprecipitation assay and immunofluorescence assay were used to evaluate the mechanism underlying the regulatory effect of ECE1 on protein kinase B (AKT). The effect of ECE1 on tumor development was assessed by xenografted lung cancer cells in either C57BL/6 mice or nude mice. RESULTS: ECE1 was upregulated in LUAD and correlated with the poor prognosis of patients with LUAD. Functional studies showed that knockdown of ECE1 retarded the progression of tumors formed by lung cancer cells at least partly by inhibiting tumor cell proliferation. Moreover, ECE1 accelerated tumor cell proliferation through promoting AKT activation dispensable of its canonical target ET-1. Mechanically, ECE1 interacted with the pleckstrin homology (PH) domain of AKT and facilitated its translocation to the plasma membrane for activation. Furthermore, the inhibition of AKT activity counteracted the lung cancer cell growth inhibition observed both in vitro and in xenografts caused by ECE1 suppression. CONCLUSIONS: The present study reveals a non-canonical function of ECE1 in regulating AKT activation and cell proliferation, which provides the basis for the development of a novel strategy for the intervention of cancer including LUAD by abrogating ECE1-AKT signaling.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Adenocarcinoma de Pulmão / Neoplasias Pulmonares Limite: Animals / Humans Idioma: En Revista: J Gene Med Assunto da revista: BIOLOGIA MOLECULAR / GENETICA MEDICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Adenocarcinoma de Pulmão / Neoplasias Pulmonares Limite: Animals / Humans Idioma: En Revista: J Gene Med Assunto da revista: BIOLOGIA MOLECULAR / GENETICA MEDICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China