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Correlation of increased hippocampal Sumo3 with spatial learning ability in old C57BL/6 mice.
Age-related impairment of learning and memory is a common phenomenon in humans and animals, yet the underlying mechanism remains unclear. We hypothesize that a small ubiquitin-related modifier (Sumo) might correlate with age-related loss of learning and memory. To test this hypothesis, the present study evaluated age-related spatial learning and memory in C57BL/6 mice (25 aged 7 months and 21 aged 25 months) using a radial six-arm water maze (RAWM). After the behavioral test, the protein expression of Sumo3 was determined in different brain regions using Western blotting. The results showed that the 25-month-old mice had longer latency and a higher number of errors in both learning and memory phases in the RAWM task than the 7-month-old mice. Compared to the latter, the former's level of Sumo3 protein was significantly increased in the dorsal and ventral hippocampus. For the 25-month-old mice, the number of errors and the latency in the learning phase negatively correlated with the Sumo3 level in the dorsal hippocampus. These results suggest that increased Sumo3 in the hippocampus may be correlated with spatial learning ability in old C57BL/6 mice.
Neurosci. Lett.2012 Jun 19,518(2).
Protein Name:SUMO3 Recombinant Human Small Ubiquitin-Related Modifier 3/SUMO3 produced by our E. coli expression system. The target protein is expressed with sequence (Met1-Phe103) of Human SUMO3 fused with a 6His tag at the N-terminus.
SUMO3 belongs to the SUMO protein family and operates like ubiquitin. Ubiquitin-like protein which can be covalently attached to target lysines either as a monomer or as a lysine-linked polyer. Nevertheless unlike ubiquitin that targets proteins for degration, SUMO3 takes part in several cellular processess, such as nuclear transport, transcription regulation, apoptosis and protein stability. SUMO3 participates in amyloid beta generation and has a key role in the oneset or progression of Alzheimer's disease.
Gene Name:SUMO3 SMT3B SMT3H1 Recombinant Human SUMO3
(CatNo. CE04)