Increase in Neuropilin-1 on the Surface of Growth Cones and Putative Raft Domains in Neuronal NG108-15 Cells Co-Cultured with Vascular Smooth Muscle SM-3 Cells

Increase in Neuropilin-1 on the Surface of Growth Cones and Putative Raft Domains in Neuronal... The mechanisms underlying autonomic innervation to its targets involve various chemical factors, but have not yet been elucidated in detail. We constructed a co-culture system of neuronal cells and vascular smooth muscle cells to investigate the mechanisms underlying innervation of the vasculature. A co-culture with the vascular smooth muscle cell line, SM-3 significantly promoted cell viability, neurite extension, and neuropilin-1 (Nrp-1) mRNA expression in the cholinergic neuronal cell line, NG108-15. Furthermore, immunocytochemistry with or without a detergent treatment revealed that a co-culture with SM-3 cells or culturing with the conditioned medium of SM-3 cells translocated Nrp-1 onto the cell surface of growth cones rather than varicosities of NG108-15 cells. Immunofluorescent microscopy combined with a cold detergent treatment or cholesterol depletion revealed that Nrp-1 accumulated in putative raft domains in the plasma membrane of NG108-15 cells co-cultured with SM-3 cells. The results of the present study suggest that some soluble factors from smooth muscle cells may affect the localization of Nrp-1 in cholinergic neuronal cells, which may, in turn, be involved in the autonomic innervation of blood vessels. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Membrane Biology Springer Journals

Increase in Neuropilin-1 on the Surface of Growth Cones and Putative Raft Domains in Neuronal NG108-15 Cells Co-Cultured with Vascular Smooth Muscle SM-3 Cells

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Publisher
Springer US
Copyright
Copyright © 2014 by Springer Science+Business Media New York
Subject
Life Sciences; Biochemistry, general; Human Physiology
ISSN
0022-2631
eISSN
1432-1424
D.O.I.
10.1007/s00232-014-9754-9
Publisher site
See Article on Publisher Site

Abstract

The mechanisms underlying autonomic innervation to its targets involve various chemical factors, but have not yet been elucidated in detail. We constructed a co-culture system of neuronal cells and vascular smooth muscle cells to investigate the mechanisms underlying innervation of the vasculature. A co-culture with the vascular smooth muscle cell line, SM-3 significantly promoted cell viability, neurite extension, and neuropilin-1 (Nrp-1) mRNA expression in the cholinergic neuronal cell line, NG108-15. Furthermore, immunocytochemistry with or without a detergent treatment revealed that a co-culture with SM-3 cells or culturing with the conditioned medium of SM-3 cells translocated Nrp-1 onto the cell surface of growth cones rather than varicosities of NG108-15 cells. Immunofluorescent microscopy combined with a cold detergent treatment or cholesterol depletion revealed that Nrp-1 accumulated in putative raft domains in the plasma membrane of NG108-15 cells co-cultured with SM-3 cells. The results of the present study suggest that some soluble factors from smooth muscle cells may affect the localization of Nrp-1 in cholinergic neuronal cells, which may, in turn, be involved in the autonomic innervation of blood vessels.

Journal

The Journal of Membrane BiologySpringer Journals

Published: Nov 22, 2014

References

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