Abstract:
:Chemokines have been reported to play crucial roles in tumor progression. Eotaxin-1 (CCL11), a member of the CC chemokine family, is elevated in many types of human cancer. Here, to reveal the molecular mechanisms of eotaxin-1 in prostate cancer cell invasion, the expression of eotaxin-1 receptors [CC chemokine receptor (CCR)2, CCR3 and CCR5] were silenced by small interfering RNA (siRNA). The ERK pathway was inhibited by the specific MEK inhibitor U0126. The role of eotaxin-1 and the CCR3-ERK pathway in prostate cancer cell invasion was assessed by invasion and migration assays. MMP-3 expression was detected by real-time PCR and ELISA assay. The results demonstrated that eotaxin-1 promoted the invasion and migration of DU-145 cells, and increased ERK1/2 activation and MMP-3 expression. Knockdown of CCR3 inhibited the invasion and migration of prostate cancer cells, and attenuated the eotaxin-1-induced ERK1/2 activation and MMP-3 expression. Furthermore, inactivation of the ERK pathway suppressed the eotaxin‑1-promoted invasion and migration, and decreased MMP-3 expression in the prostate cancer cells. Together, the present study suggests that eotaxin-1 increases MMP-3 expression via the CCR3-ERK pathway, thereby promoting prostate cancer cell invasion and migration. Thus, therapies that block eotaxin-1 and CCR3 may be effective interventions for prostate cancer.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Zhu F,Liu P,Li J,Zhang Ydoi
10.3892/or.2014.3060subject
Has Abstractpub_date
2014-05-01 00:00:00pages
2049-54issue
5eissn
1021-335Xissn
1791-2431journal_volume
31pub_type
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