Interleukin-1alpha enhances the aggressive behavior of pancreatic cancer cells by regulating the alpha6beta1-integrin and urokinase plasminogen activator receptor expression

BMC Cell Biology
Hirozumi SawaiTadao Manabe

Abstract

In human pancreatic cancer progression, the alpha6beta1-integrin is expressed on cancer cell surface during invasion and metastasis formation. In this study, we investigated whether interleukin (IL)-1alpha induces the alterations of integrin subunits and urokinase plasminogen activator/urokinase plasminogen activator receptor (uPA/uPAR) expression in pancreatic cancer cells. We hypothesize that the alterations of integrin subunits and uPA/uPAR expression make an important role in signaling pathways responsible for biological behavior of pancreatic cancer cells. IL-1alpha upregulated the expression of alpha6 and beta1 integrins without any alterations of alpha5 and alphav integrins expression. IL-1alpha also induced enhancement in the expression of uPA/uPAR in pancreatic cancer cells. IL-1alpha enhanced the proliferation, adhesion, and migration in pancreatic cancer cells, and IL-1alpha-induced alterations of uPA/uPAR expression correlated with the increased the migration of pancreatic cancer cells. Upregulation of alpha6 integrin subunit and uPA/uPAR correlated with the activation of Ras and downstream extracellular signal-regulated kinase (ERK) pathways. IL-1alpha-induced activation of Ras and downstream ERK can be inhibited b...Continue Reading

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Methods Mentioned

BETA
Assay
pancreatectomy
FCS
protein assay

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