Interleukin-6 and Neural Stem Cells: More Than Gliogenesis

Overview

Journal Mol Biol Cell

Specialties Cell Biology
Molecular Biology

Date 2008 Oct 31

PMID 18971377

Citations 70

Authors

Omedul Islam

Xiandi Gong

Stefan Rose-John

Klaus Heese

Affiliations

Soon will be listed here.

Abstract

Besides its wide range of action as a proinflammatory cytokine in the immune system, interleukin-6 (IL-6) has also attracted much attention due to its influence on the nervous system. In the present study we show that the designer fusion protein H-IL-6, consisting of IL-6 and its specific receptor IL-6R-alpha, but not IL-6 alone, mediates both neuro- as well as gliogenesis. Using immunocytochemistry, Western blot, and patch-clamp recording, we demonstrate that H-IL-6 induces the differentiation of neural stem cells (NSCs) specifically into glutamate-responsive neurons and two morphological distinctive astroglia cell types. H-IL-6-activated neurogenesis seems to be induced by the MAPK/CREB (mitogen-activated protein kinase/cAMP response element-binding protein) cascade, whereas gliogenesis is mediated via the STAT-3 (signal transducers and activators of transcription protein-3) signaling pathway. Our finding that IL-6 mediates both processes depending on its specific soluble receptor sIL-6R-alpha has implications for the potential treatment of neurodegenerative diseases.

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