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International Journal Of Bilogical Sciences

.: Home > International Journal Of Bilogical Sciences > 2012 > Volume 8 Number 9 > Masaaki Murakami1✉, Toshio Hirano2✉

The Pathological and Physiological Roles of IL-6 Amplifier Activation

Masaaki Murakami1✉, Toshio Hirano2✉
1. Laboratory of Developmental Immunology, JST-CREST, Graduate School of Frontier Biosciences, Graduate School of Medicine, and WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan; 2. JST-CREST, Osaka University, Osaka, Japan.
Abstract :

The NFκB-triggered positive feedback loop for IL-6 signaling in type 1 collagen+ non-immune cells (IL-6 amplifier) was first discovered to be a synergistic signal that is activated following IL-17A and IL-6 stimulation in type 1 collagen+ non-immune cells. Subsequent disease models have shown that it can also be stimulated by the simultaneous activation of NFκB and STAT3, functions as a local chemokine inducer, and acts as a mechanism for local inflammation, particularly chronic ones like rheumatoid arthritis and a multiple sclerosis. Moreover, we have recently shown that hyper activation of the IL-6 amplifier via regional neural activation establishes a gateway for immune cells including autoreactive T cells to pass the blood-brain barrier at dorsal vessels in 5th lumbar cord. Here we review how the IL-6 amplifier is activated by neural activation and the physiological relevance of the gateway to the central nervous system. Accumulating evidences continues to suggest that the IL-6 amplifier offers a potential molecular mechanism for the relationship between neural activation and the development of inflammatory diseases, which could establish a new interdisciplinary field that fuses neurology and immunology.

Keywords :
IL-6, neural activation, inflammatory diseases

Date Deposited : 09 Apr 2015 14:39

Last Modified : 09 Apr 2015 14:39

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Volume 8, Number 9, - 2012 , ISSN 1545-1003

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