Methods for increasing intracellular activity of Hsp70
The present invention relates to a bioactive agent capable of increasing the intracellular concentration and/or activity of Hsp70 for use in the treatment of a lysosomal storage disease which arise from a defect in an enzyme whose activity is not directly associated with the presence of lysosomal BMP as a co-factor; such as glycogen storage diseases, gangliosidoses, neuronal ceroid lipofuscinoses, cerebrotendinous cholesterosis, Wolman's disease, cholesteryl ester storage disease, disorders of glycosaminoglycan metabolism, mucopolysaccharidoses, disorders of glycoprotein metabolism, mucolipidoses, aspartylglucosaminuria, fucosidosis, mannosidoses, and sialidosis type II.
1. A method of treatment of an individual having a neuronal ceroid lipofuscinosis, said method comprising administering to the individual a hydroxylamine derivative capable of amplifying Hsp70 gene expression, wherein said hydroxylamine derivative is selected from the group consisting of bimoclomol, arimoclomol, BRX-220, BRX-345, iroxanadine and BGP-15.
2. The method according to claim 1 , wherein said neuronal ceroid lipofuscinosis is selected from the group consisting of Batten disease (Spielmeyer-Vogt disease), Bielschowsky-Jansky disease, Kufs disease, and Santavuori-Haltia disease.
3. The method according to claim 1 , wherein said hydroxylamine derivative is administered in combination with at least one other treatment modality.
4. The method according to claim 3 , wherein said at least one other treatment modality is selected from the group consisting of enzyme replacement therapy (ERT), pain relievers, corticosteroids, substrate reduction therapy, a transplantation, physical therapy, Hsp70 and a function fragment of Hsp70 or variant thereof having at least 95% sequence identity to Hsp70.
5. The method according to claim 1 , wherein said hydroxylamine derivative is selected from the group consisting of BRX-220 and BRX-345.
6. The method according to claim 1 , wherein said hydroxylamine derivative is iroxanadine.
7. The method according to claim 1 , wherein said hydroxylamine derivative is arimoclomol.