Chimeric Molecules with Multiple Neurotrophic Activities Reveal Structural Elements Determining the Specificities of NGF and BDNF

Overview

Journal EMBO J

Specialties Biotechnology
Molecular Biology

Date 1991 Aug 1

PMID 2065656

Citations 22

Authors

C F Ibanez

T Ebendal

H Persson

Affiliations

Soon will be listed here.

Abstract

Nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) are two members of a family of neurotrophic factors which show both overlapping and distinct neurotrophic activities. Using site-directed mutagenesis, chimeric molecules were constructed where different combinations of sequences from BDNF replaced the corresponding sequences in NGF. The resulting molecules were transiently expressed in COS cells and conditioned media containing the chimeric proteins were assayed for biological activity in explanted chick sympathetic, spinal and nodose ganglia. Our results show that the biological specificities of the two proteins are obtained by specific combinations of a set of sequences that differ between the two molecules. Some of these combinations allowed us to engineer molecules which display multiple neurotrophic activities recruited from both the NGF and BDNF proteins.

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