Sijuan Ding1, Zhaohui Tang2, Yongjun Jiang1, Honglin Huang1, Pengfei Luo1, Bohua Qing1, Siyuan Zhang1, Ruoting Tang1. 1. Department of Oncology, The Central Hospital of Yongzhou, No. 396, Yiyun Road, Lengshuitan District, Yongzhou City, 425000, China. 2. Department of Oncology, The Central Hospital of Yongzhou, No. 396, Yiyun Road, Lengshuitan District, Yongzhou City, 425000, China. drzhaohuitang@126.com.
Abstract
BACKGROUND AND AIMS: Studies revealed that estrogenic signals were involved in the development of colorectal cancer (CRC), while the roles of estrogen related receptor (ERR) on the progression of CRC have not been well illustrated. Its roles on the development of CRC were investigated. METHODS: The expression of ERRα/β/γ in CRC cells were measured. The effects of ERRα on cell proliferation, migration and expression of cytokines were investigated accordingly. RESULTS: Our data revealed that the expression of ERRα, while not ERRβ or ERRγ, was significantly increased in CRC cells and clinical CRC tissues. Both the inverse agonist of ERRα (XCT-790) and si-ERRα can inhibit the proliferation of CRC cells. XCT-790 treatment can also suppress the wound healing and in vitro migration of CRC cells. Cytokine assays showed that XCT-790 can significantly decrease the expression of interleukin-8 (IL-8), while not IL-4, IL-6, IL-8, IL-9, IL-10, IL-18, IFN-γ, or TGF-β, in CRC cells. Over expression of ERRα increased the expression of IL-8. Luciferase assay showed XCT-790 decreased the promoter activity of IL-8. XCT-790 can increase the decay of IL-8 mRNA in SW480 cells. The recombinant IL-8 (rIL-8) can rescue XCT-790 induced suppression of proliferation and migration of CRC cells. XCT-790 can decrease the phosphorylation of ERK1/2 and STAT3, two downstream signal molecules of IL-8, in CRC cells. While rIL-8 can markedly attenuate XCT-790 induced dephosphorylation of ERK1/2 and STAT3. CONCLUSION: Our data showed that ERRα can trigger the proliferation and migration of CRC cells via up regulation of IL-8. Therefor targeted inhibition of ERRα/IL-8 might be a potential approach for CRC treatment and drug development.
BACKGROUND AND AIMS: Studies revealed that estrogenic signals were involved in the development of colorectal cancer (CRC), while the roles of estrogen related receptor (ERR) on the progression of CRC have not been well illustrated. Its roles on the development of CRC were investigated. METHODS: The expression of ERRα/β/γ in CRC cells were measured. The effects of ERRα on cell proliferation, migration and expression of cytokines were investigated accordingly. RESULTS: Our data revealed that the expression of ERRα, while not ERRβ or ERRγ, was significantly increased in CRC cells and clinical CRC tissues. Both the inverse agonist of ERRα (XCT-790) and si-ERRα can inhibit the proliferation of CRC cells. XCT-790 treatment can also suppress the wound healing and in vitro migration of CRC cells. Cytokine assays showed that XCT-790 can significantly decrease the expression of interleukin-8 (IL-8), while not IL-4, IL-6, IL-8, IL-9, IL-10, IL-18, IFN-γ, or TGF-β, in CRC cells. Over expression of ERRα increased the expression of IL-8. Luciferase assay showed XCT-790 decreased the promoter activity of IL-8. XCT-790 can increase the decay of IL-8 mRNA in SW480 cells. The recombinant IL-8 (rIL-8) can rescue XCT-790 induced suppression of proliferation and migration of CRC cells. XCT-790 can decrease the phosphorylation of ERK1/2 and STAT3, two downstream signal molecules of IL-8, in CRC cells. While rIL-8 can markedly attenuate XCT-790 induced dephosphorylation of ERK1/2 and STAT3. CONCLUSION: Our data showed that ERRα can trigger the proliferation and migration of CRC cells via up regulation of IL-8. Therefor targeted inhibition of ERRα/IL-8 might be a potential approach for CRC treatment and drug development.
Authors: Michael S Simon; Rowan T Chlebowski; Jean Wactawski-Wende; Karen C Johnson; Andrew Muskovitz; Ikuko Kato; Alicia Young; F Allan Hubbell; Ross L Prentice Journal: J Clin Oncol Date: 2012-09-24 Impact factor: 44.544
Authors: Ivan Casaburi; Adele Chimento; Arianna De Luca; Marta Nocito; Sara Sculco; Paola Avena; Francesca Trotta; Vittoria Rago; Rosa Sirianni; Vincenzo Pezzi Journal: Front Endocrinol (Lausanne) Date: 2018-09-11 Impact factor: 5.555