Defective myogenic differentiation of human rhabdomyosarcoma cells is characterized by sialidase Neu2 loss of expression

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• 作者：Elena Stoppani ; Stefania Rossi ; Sergio Marchesini ; Augusto Preti ; Aless ; ro Fanzani
• 关键词：Neu2 ; Sialidases ; Rhabdomyosarcoma ; p38 ; Follistatin
• 刊名：Cell Biology International
• 出版年：2009
• 出版时间：September 2009
• 年：2009
• 卷：33
• 期：9
• 页码：1020-1025
• 全文大小：431 K

文摘

Sialidase Neu2 is a glycohydrolytic enzyme whose tissue distribution has been detected principally in differentiated skeletal muscle. In this study we show that Neu2 expression is absent in different embryonal and alveolar human tumor rhabdomyosarcoma (RMS) cells, which are genetically committed myoblasts characterized by delayed differentiation. Forced myogenic differentiation of an embryonal RMS cell line, as obtained via pharmacological and genetic p38 activation or via follistatin overexpression, was characterized by Neu2 loss of expression despite the significant rise of different muscle-specific markers, suggesting therefore that the defective myogenic program of RMS cells is accompanied by Neu2 suppression.