PMID- 15181456 OWN - NLM STAT- MEDLINE DCOM- 20051020 LR - 20040917 IS - 1350-9047 (Print) IS - 1350-9047 (Linking) VI - 11 IP - 10 DP - 2004 Oct TI - Galectin-1beta, a natural monomeric form of galectin-1 lacking its six amino-terminal residues promotes axonal regeneration but not cell death. PG - 1076-83 AB - We previously identified a novel N-terminally processed form of galectin-1, galectin-1beta (Gal-1beta) whose expression was induced by DeltaFosB. In the present study, the biochemical properties and biological functions of Gal-1beta were compared with the full-length form of galectin-1 (Gal-1alpha). We first purified recombinant mouse Gal-1alpha and beta (rmGal-1alpha, beta) to near homogeneity. The rmGal-1alpha exists as a monomer under oxidized conditions and forms a dimer under reduced conditions, while the rmGal-1beta exists as a monomer regardless of redox conditions. The affinity of rmGal-1beta to beta-lactose was approximately two-fold lower than that of rmGal-1alpha under reduced conditions. The viability of Jurkat cells efficiently decreased when they were exposed to rmGal-1alpha, however, rmGal-1beta barely induced such a reduction. In contrast, both rmGal-1alpha and rmGal-1beta exhibited an equivalent capacity to promote axonal regeneration from the dorsal root ganglion explants. Our results suggest that the biochemical properties of rmGal-1beta determine its biological functions. FAU - Miura, T AU - Miura T AD - Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Maidashi Higashi-ku, Fukuoka, Japan. FAU - Takahashi, M AU - Takahashi M FAU - Horie, H AU - Horie H FAU - Kurushima, H AU - Kurushima H FAU - Tsuchimoto, D AU - Tsuchimoto D FAU - Sakumi, K AU - Sakumi K FAU - Nakabeppu, Y AU - Nakabeppu Y LA - eng PT - Journal Article PL - England TA - Cell Death Differ JT - Cell death and differentiation JID - 9437445 RN - 0 (Galectin 1) RN - 0 (Lectins) SB - IM MH - Animals MH - Axons/*drug effects/*metabolism MH - Cell Death/drug effects MH - Circular Dichroism MH - Dimerization MH - Galectin 1/*chemistry/genetics/metabolism/*pharmacology MH - Ganglia, Spinal/cytology/drug effects/metabolism MH - Humans MH - Jurkat Cells MH - Lectins/pharmacology MH - Mice MH - Models, Molecular MH - Nerve Regeneration/*drug effects MH - Oxidation-Reduction MH - Protein Structure, Secondary MH - Protein Structure, Tertiary MH - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization MH - Structure-Activity Relationship EDAT- 2004/06/08 05:00 MHDA- 2005/10/21 09:00 CRDT- 2004/06/08 05:00 PHST- 2004/06/08 05:00 [pubmed] PHST- 2005/10/21 09:00 [medline] PHST- 2004/06/08 05:00 [entrez] AID - 4401462 [pii] AID - 10.1038/sj.cdd.4401462 [doi] PST - ppublish SO - Cell Death Differ. 2004 Oct;11(10):1076-83. doi: 10.1038/sj.cdd.4401462.