Abstract:
:To study the role of the chemokine receptor CCR7 in the metastatic process, a murine CCR7 gene was transduced in two mammary cancer cell lines with different origins and molecular features; TS/A, derived from a spontaneous mammary cancer of BALB/c strain, and N202.1A, derived from a HER-2/neu transgenic mammary cancer (FVB background) and characterized by a high expression of HER-2/neu. Transduced CCR7 conferred to mammary cancer cells a chemotactic response towards CCL21 (a CCR7 ligand), but did not consistently affect in vitro growth properties. In vivo, CCR7-engineered cells gave rise to tumors in syngeneic hosts with growth rates similar to or slightly lower than the controls and with similar patterns of spontaneous metastases. When injected directly intravenously to study the late post-intravasation phases of metastasis, CCR7-engineered cells showed a strongly decreased lung colonizing ability. Such an effect was observed both with HER-2/neu-positive and -negative mammary cancer cells. When used as a prophylactic vaccine, CCR7-transduced cell vaccine succeeded in the long-term control of mammary tumorigenesis in 25% of the HER-2/neu transgenic females, suggesting an increased immunogenicity of CCR7-engineered cells.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Croci S,Nicoletti G,Landuzzi L,Palladini A,Chiarini F,Nanni P,Lollini PL,De Giovanni Csubject
Has Abstractpub_date
2007-08-01 00:00:00pages
451-6issue
2eissn
1021-335Xissn
1791-2431journal_volume
18pub_type
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