Experimental and epidemiological studies have revealed that chronic inflammation contributes to cancer progression and even predisposes to cellular transformation. Inflammatory infiltrates in papillary thyroid cancer include lymphocytes, macrophages and cytokines. High-mobility group box 1 protein (HMGB1) is a late inflammatory cytokine that signals danger to the immune system through the receptor for advanced glycation end-products (RAGE) and Toll-like receptor. The activation of the above receptors results in the secretion of growth, chemotactic and angiogenic factors that contribute to chronic inflammation. In this study, we suggest that apart from the activation of signal transduction pathways by the activation of RAGE, the indirect inhibition of cell cycle regulators [such as phosphatase and tensin homolog (PTEN)I may also cause an increase in cell growth and motility. MicroRNAs (miRNAs) have increasingly been implicated in regulating the malignant progression of cancer. MiR-221 and miR-222 have been found to be deregulated in human papillary thyroid carcinomas. They are involved in cell proliferation through the inhibition of the cell cycle regulator, p27(kipl), in human papillary carcinomas. In this study, we show that HMGB1 increases the expression of miR-221 and miR-222 in primary cultures of excised papillary lesions and in an established papillary cancer cell line (BC PAP). The overexpression of oncogenic miR-221 and miR-222 caused by HMGB1 is associated with an increase in malignancy scores, namely cell growth and motility.

HMGB1 induces the overexpression of miR-222 and miR-221 and increases growth and motility in papillary thyroid cancer cells / Mardente, Stefania; Mari, Emanuela; Consorti, Fabrizio; DI GIOIA, Cira Rosaria Tiziana; Negri, Rodolfo; M., Etna; Zicari, Alessandra; Antonaci, Alfredo. - In: ONCOLOGY REPORTS. - ISSN 1021-335X. - STAMPA. - 28:6(2012), pp. 2285-2289. [10.3892/or.2012.2058]

HMGB1 induces the overexpression of miR-222 and miR-221 and increases growth and motility in papillary thyroid cancer cells

MARDENTE, Stefania;MARI, EMANUELA;CONSORTI, Fabrizio;DI GIOIA, Cira Rosaria Tiziana;NEGRI, RODOLFO;ZICARI, Alessandra;ANTONACI, Alfredo
2012

Abstract

Experimental and epidemiological studies have revealed that chronic inflammation contributes to cancer progression and even predisposes to cellular transformation. Inflammatory infiltrates in papillary thyroid cancer include lymphocytes, macrophages and cytokines. High-mobility group box 1 protein (HMGB1) is a late inflammatory cytokine that signals danger to the immune system through the receptor for advanced glycation end-products (RAGE) and Toll-like receptor. The activation of the above receptors results in the secretion of growth, chemotactic and angiogenic factors that contribute to chronic inflammation. In this study, we suggest that apart from the activation of signal transduction pathways by the activation of RAGE, the indirect inhibition of cell cycle regulators [such as phosphatase and tensin homolog (PTEN)I may also cause an increase in cell growth and motility. MicroRNAs (miRNAs) have increasingly been implicated in regulating the malignant progression of cancer. MiR-221 and miR-222 have been found to be deregulated in human papillary thyroid carcinomas. They are involved in cell proliferation through the inhibition of the cell cycle regulator, p27(kipl), in human papillary carcinomas. In this study, we show that HMGB1 increases the expression of miR-221 and miR-222 in primary cultures of excised papillary lesions and in an established papillary cancer cell line (BC PAP). The overexpression of oncogenic miR-221 and miR-222 caused by HMGB1 is associated with an increase in malignancy scores, namely cell growth and motility.
2012
micrornas; papillary cancer; receptor for advanced glycation end-products; high-mobility group box 1 protein; chemotaxis
01 Pubblicazione su rivista::01a Articolo in rivista
HMGB1 induces the overexpression of miR-222 and miR-221 and increases growth and motility in papillary thyroid cancer cells / Mardente, Stefania; Mari, Emanuela; Consorti, Fabrizio; DI GIOIA, Cira Rosaria Tiziana; Negri, Rodolfo; M., Etna; Zicari, Alessandra; Antonaci, Alfredo. - In: ONCOLOGY REPORTS. - ISSN 1021-335X. - STAMPA. - 28:6(2012), pp. 2285-2289. [10.3892/or.2012.2058]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/494715
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