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MIP-3alpha, MIP-3beta and Fractalkine Induce the Locomotion and the Mobilization of Intracellular Calcium, and Activate the Heterotrimeric G Proteins in Human Natural Killer Cells

MIP-3alpha, MIP-3beta and Fractalkine Induce the Locomotion and the Mobilization of Intracellular Calcium, and Activate the Heterotrimeric G Proteins in Human Natural Killer Cells

A Al-Aoukaty, B Rolstad, A Giaid, A A Maghazachi

Immunology. 1998 Dec;95(4):618-24.

PMID: 9893054

Abstract:

We demonstrate here that the CC chemokines macrophage inflammatory protein-3alpha (MIP-3alpha), macrophage inflammatory protein-3beta (MIP-3beta) and the CX3C chemokine fractalkine induce the chemotaxis of interleukin-2 (IL-2)-activated natural killer (IANK) cells. In addition, these chemokines enhance the binding of [gamma-35S]guanine triphosphate ([gamma-35S]GTP) to IANK cell membranes, suggesting that receptors for these chemokines are G protein-coupled. Our results show that MIP-3alpha receptors are coupled to Go, Gq and Gz, MIP-3beta receptors are coupled to Gi, Gq and Gs, whereas fractalkine receptors are coupled to Gi, and Gz. All three chemokines induced a robust calcium response flux in IANK cells. Cross-desensitization experiments show that MIP-3alpha, MIP-3beta or fractalkine use receptors not shared by each other or by the CC chemokine regulated on activation, normal, T-cell expressed, and secreted (RANTES), the CXC chemokines stromal-derived factor-1alpha (SDF-1alpha) and interferon-inducible protein-10 (IP-10), or the C chemokine lymphotactin.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42413128	MIP-3beta human			Price

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