Distinct molecular interactions mediate neuronal process outgrowth on non-neuronal cell surfaces and extracellular matrices

K. J. Tomaselli, L. F. Reichardt, John Bixby

Research output: Contribution to journalArticle

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Abstract

We have compared neurite outgrowth on extracellular matrix (ECM) constituents to outgrowth on glial and muscle cell surfaces. Embryonic chick ciliary ganglion (CG) neurons regenerate neurites rapidly on surfaces coated with laminin (LN), fibronectin (FN), conditioned media (CM) from several non-neuronal cell types that secrete LN, and on intact extracellular matrices. Neurite outgrowth on all of these substrates is blocked by two monoclonal antibodies, CSAT and JG22, that prevent the adhesion of many cells, including neurons, to the ECM constituents LN, FN, and collagen. Neurite outgrowth is inhibited even on mixed LN/poly-D-lysine substrates where neuronal attachment is independent of LN. Therefore, neuronal process outgrowth on extracellular matrices requires the function of neuronal cell surface molecules recognized by these antibodies. The surfaces of cultured astrocytes, Schwann cells, and skeletal myotubes also promote rapid process outgrowth from CG neurons. Neurite outgrowth on these surfaces, though, is not prevented by CSAT or JG22 antibodies. In addition, antibodies to a LN/proteoglycan complex that block neurite outgrowth on several LN-containing CM factors and on an ECM extract failed to inhibit cell surface-stimulated neurite outgrowth. After extraction with a nonionic detergent, Schwann cells and myotubes continue to support rapid neurite outgrowth. However, the activity associated with the detergent insoluble residue is blocked by CSAT and JG22 antibodies. Detergent extraction of astrocytes, in contrast, removes all neurite-promoting activity. These results provide evidence for at least two types of neuronal interactions with cells that promote neurite outgrowth. One involves adhesive proteins present in the ECM and ECM receptors on neurons. The second is mediated through detergent-extractable macro-molecules present on non-neuronal cell surfaces and different, uncharacterized receptor(s) on neurons. Schwann cells and skeletal myotubes appear to promote neurite outgrowth by both mechanisms.

Original languageEnglish
Pages (from-to)2659-2672
Number of pages14
JournalJournal of Cell Biology
Volume103
Issue number6 II
StatePublished - Dec 1 1986
Externally publishedYes

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Extracellular Matrix
Laminin
Detergents
Schwann Cells
Skeletal Muscle Fibers
Neurons
Parasympathetic Ganglia
Antibodies
Neurites
Conditioned Culture Medium
Fibronectins
Astrocytes
Neuronal Outgrowth
Proteoglycans
Cell Adhesion
Cell Communication
Neuroglia
Adhesives
Muscle Cells
Lysine

ASJC Scopus subject areas

  • Cell Biology

Cite this

Distinct molecular interactions mediate neuronal process outgrowth on non-neuronal cell surfaces and extracellular matrices. / Tomaselli, K. J.; Reichardt, L. F.; Bixby, John.

In: Journal of Cell Biology, Vol. 103, No. 6 II, 01.12.1986, p. 2659-2672.

Research output: Contribution to journalArticle

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