OHSU

Lein Lab

The functional properties of the vertebrate nervous system depend upon the neuronal connections formed during development. Two critical developmental events that determine neuronal connectivity include the projection of axons to selective targets and the elaboration of the neuron’s primary receptive surface, the dendritic arbor. The major goal of this laboratory is to identify and characterize factors that modulate axonal and dendritic growth during normal development and assess the role of such factors as targets for environmental contaminants with neurotoxic potential. The specific questions we are currently pursuing in the lab are:

 

To address these questions we employ a variety of techniques ranging from microarray analyses to primary neuronal cell culture to transgenic animals.

 neuron

Cultured sympathetic neurons extend dendrites when exposed to cerebrospinal fluid (CSF) and this response is inhibited in the presence of function blocking BMP-7 antibodies. These data indicate that CSF contains biologically active bone morphogenetic protein-7. The dendritic arbor is immunolabeled with antibodies specific for MAP-2, a dendrite-specific cytoskeletal protein. This photomicrograph was the cover illustration for the volume of Experimental Neurology in which this work was presented (Dattatreyamurty et al., 2001, Exp Neurol 172:273-281). Click here to download a pdf version of this paper.