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| Content Provider | Springer Nature Link |
|---|---|
| Author | Lee, Ji Sook Kim, In Sik |
| Copyright Year | 2009 |
| Abstract | Leukotactin-1 (Lkn-1)/CCL15 is a CC chemokine that binds to the CCR1 and CCR3. Lkn-1 functions as an essential factor in the migration of monocytes, lymphocytes, and neutrophils. Although eosinophils express both receptors, the role of Lkn-1 in immature eosinophils remains to be elucidated. In this present study, we investigated the contribution of the CCR1-binding chemokines to chemotactic activity and in the differentiation in the human eosinophilic leukemia cell line EoL-1. Lkn-1 induced the stronger migration of EoL-1 cells than other CCR1-binding chemokines such as RANTES/CCL5, MIP-1α/CCL3 and HCC-4/CCL16. Lkn-1-induced chemotaxis was inhibited by pertussis toxin, an inhibitor of G$_{i}$/G$_{o}$ protein; U73122, an inhibitor of phospholipase C and rottlerin, an inhibitor of protein kinase C delta (PKCδ). Lkn-1 increased PKCδ activity, which was partially blocked by the pertussis toxin and U73122. Lkn-1 enhanced the butyric acid-induced differentiation via PKCδ after binding to the increased CCR1 because Lkn-1 caused EoL-1 cells to change morphologically into mature eosinophil-like cells. Likewise, Lkn-1 increased the expression of both eosinophil peroxidase (EPO) and the major basic protein (MBP). PKCδ activation due to Lkn-1 is involved in migration, as well as the butyric acid-induced differentiation. This finding contributes to an understanding of CC chemokines in eosinophil biology and to the development of novel therapies for the treatment of eosinophilic disorders. This study suggests the pivotal roles of Lkn-1 in the regulation of the movement and development of eosinophils. |
| Starting Page | 2149 |
| Ending Page | 2156 |
| Page Count | 8 |
| File Format | |
| ISSN | 03014851 |
| Journal | Molecular Biology Reports |
| Volume Number | 37 |
| Issue Number | 5 |
| e-ISSN | 15734978 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2009-08-11 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Leukotactin-1 Eosinophils Cell migration Differentiation Protein kinase C δ Animal Biochemistry Animal Anatomy / Morphology / Histology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Medicine Molecular Biology |
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