Abstract
Monocyte chemoattractant protein-1 (MCP-1) is a CC chemokine that plays an important role in immune cell migration. It has been reported that chemokines, including MCP-1, are involved in angiogenesis and metastasis. However, the exact role of chemokines in cancer development is still obscure. We investigated the involvement of MCP-1 in taxol-induced breast cancer cell death. The anti-cancer drug taxol induced MCF-7 breast cancer cell death. Treatment with taxol increased the mRNA expression level of MCP-1 in a dose- and time-dependent manner. Up-regulation of MCP-1 by taxol was augmented in cells treated with rottlerin, a specific inhibitor of protein kinase Cδ (PKCδ). In addition, taxol-induced MCP-1 expression was reduced by the ectopic expression of PKCδ in a dose-dependent manner, indicating that PKCδ plays a negative role in taxol-induced MCP-1 expression in MCF-7 cells. On the other hand, taxol-induced up-regulation of MCP-1 was reduced in cells treated with U73122, an inhibitor of phospholipase C (PLC), and ectopic expression of PLC-γ1 increased the expression of MCP-1 in taxol-treated MCF-7 cells, indicating that PLC-γ1 functions as a positive regulator in taxol-induced MCP-1 expression. These results indicate that MCP-1 is involved in taxol-induced breast cancer cell death and we propose that taxol induces up-regulation of MCP-1 by affecting both positive and negative regulatory signaling pathways.
| Original language | English |
|---|---|
| Pages (from-to) | 853-858 |
| Number of pages | 6 |
| Journal | International Journal of Molecular Medicine |
| Volume | 24 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2009 Nov 11 |
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Keywords
- Breast cancer
- MCP-1
- Protein kinase Cδ phospholipase C
- Signal transduction
- Taxol
ASJC Scopus subject areas
- Genetics
Cite this
Effects of protein kinase Cδ and phospholipase C-γ1 on monocyte chemoattractant protein-1 expression in taxol-induced breast cancer cell death. / Kim, Yoon Suk; An, Hyoung Tae; Kim, Jeonghan; Ko, Je Sang.
In: International Journal of Molecular Medicine, Vol. 24, No. 6, 11.11.2009, p. 853-858.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of protein kinase Cδ and phospholipase C-γ1 on monocyte chemoattractant protein-1 expression in taxol-induced breast cancer cell death
AU - Kim, Yoon Suk
AU - An, Hyoung Tae
AU - Kim, Jeonghan
AU - Ko, Je Sang
PY - 2009/11/11
Y1 - 2009/11/11
N2 - Monocyte chemoattractant protein-1 (MCP-1) is a CC chemokine that plays an important role in immune cell migration. It has been reported that chemokines, including MCP-1, are involved in angiogenesis and metastasis. However, the exact role of chemokines in cancer development is still obscure. We investigated the involvement of MCP-1 in taxol-induced breast cancer cell death. The anti-cancer drug taxol induced MCF-7 breast cancer cell death. Treatment with taxol increased the mRNA expression level of MCP-1 in a dose- and time-dependent manner. Up-regulation of MCP-1 by taxol was augmented in cells treated with rottlerin, a specific inhibitor of protein kinase Cδ (PKCδ). In addition, taxol-induced MCP-1 expression was reduced by the ectopic expression of PKCδ in a dose-dependent manner, indicating that PKCδ plays a negative role in taxol-induced MCP-1 expression in MCF-7 cells. On the other hand, taxol-induced up-regulation of MCP-1 was reduced in cells treated with U73122, an inhibitor of phospholipase C (PLC), and ectopic expression of PLC-γ1 increased the expression of MCP-1 in taxol-treated MCF-7 cells, indicating that PLC-γ1 functions as a positive regulator in taxol-induced MCP-1 expression. These results indicate that MCP-1 is involved in taxol-induced breast cancer cell death and we propose that taxol induces up-regulation of MCP-1 by affecting both positive and negative regulatory signaling pathways.
AB - Monocyte chemoattractant protein-1 (MCP-1) is a CC chemokine that plays an important role in immune cell migration. It has been reported that chemokines, including MCP-1, are involved in angiogenesis and metastasis. However, the exact role of chemokines in cancer development is still obscure. We investigated the involvement of MCP-1 in taxol-induced breast cancer cell death. The anti-cancer drug taxol induced MCF-7 breast cancer cell death. Treatment with taxol increased the mRNA expression level of MCP-1 in a dose- and time-dependent manner. Up-regulation of MCP-1 by taxol was augmented in cells treated with rottlerin, a specific inhibitor of protein kinase Cδ (PKCδ). In addition, taxol-induced MCP-1 expression was reduced by the ectopic expression of PKCδ in a dose-dependent manner, indicating that PKCδ plays a negative role in taxol-induced MCP-1 expression in MCF-7 cells. On the other hand, taxol-induced up-regulation of MCP-1 was reduced in cells treated with U73122, an inhibitor of phospholipase C (PLC), and ectopic expression of PLC-γ1 increased the expression of MCP-1 in taxol-treated MCF-7 cells, indicating that PLC-γ1 functions as a positive regulator in taxol-induced MCP-1 expression. These results indicate that MCP-1 is involved in taxol-induced breast cancer cell death and we propose that taxol induces up-regulation of MCP-1 by affecting both positive and negative regulatory signaling pathways.
KW - Breast cancer
KW - MCP-1
KW - Protein kinase Cδ phospholipase C
KW - Signal transduction
KW - Taxol
UR - http://www.scopus.com/inward/record.url?scp=70350776994&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70350776994&partnerID=8YFLogxK
U2 - 10.3892/ijmm_00000303
DO - 10.3892/ijmm_00000303
M3 - Article
VL - 24
SP - 853
EP - 858
JO - International Journal of Molecular Medicine
JF - International Journal of Molecular Medicine
SN - 1107-3756
IS - 6
ER -