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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 
 

Reticulon family members modulate BACE1 activity and amyloid-beta peptide generation.

Inhibiting the activity of the beta-amyloid converting enzyme 1 (BACE1) or reducing levels of BACE1 in vivo decreases the production of amyloid-beta. The reticulon family of proteins has four members, RTN1, RTN2, RTN3 and RTN4 (also known as Nogo), the last of which is well known for its role in inhibiting neuritic outgrowth after injury. Here we show that reticulon family members are binding partners of BACE1. In brain, BACE1 mainly colocalizes with RTN3 in neurons, whereas RTN4 is more enriched in oligodendrocytes. An increase in the expression of any reticulon protein substantially reduces the production of Abeta. Conversely, lowering the expression of RTN3 by RNA interference increases the secretion of Abeta, suggesting that reticulon proteins are negative modulators of BACE1 in cells. Our data support a mechanism by which reticulon proteins block access of BACE1 to amyloid precursor protein and reduce the cleavage of this protein. Thus, changes in the expression of reticulon proteins in the human brain are likely to affect cellular amyloid-beta and the formation of amyloid plaques.[1]

References

  1. Reticulon family members modulate BACE1 activity and amyloid-beta peptide generation. He, W., Lu, Y., Qahwash, I., Hu, X.Y., Chang, A., Yan, R. Nat. Med. (2004) [Pubmed]
 
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