NDLI: Therapeutic Effects of Stem Cells and Substrate Reduction in Juvenile Sandhoff Mice

Content Provider	Springer Nature Link
Author	Arthur, J. R. Lee, J. P. Snyder, E. Y. Seyfried, T. N.
Copyright Year	2012
Abstract	Sandhoff Disease (SD) involves the CNS accumulation of ganglioside GM2 and asialo-GM2 (GA2) due to inherited defects in the β-subunit gene of β-hexosaminidase A and B (Hexb gene). Substrate reduction therapy, utilizing imino sugar N-butyldeoxygalactonojirimycin (NB-DGJ), reduces ganglioside biosynthesis and levels of stored GM2 in SD mice. Intracranial transplantation of Neural Stem Cells (NSCs) can provide enzymatic cross correction, to help reduce ganglioside storage and extend life. Here we tested the effect of NSCs and NB-DGJ, alone and together, on brain β-hexosaminidase activity, GM2, and GA2 content in juvenile SD mice. The SD mice received either cerebral NSC transplantation at post-natal day 0 (p-0), intraperitoneal injection of NB-DGJ (500 mg/kg/day) from p-9 to p-15, or received dual treatments. The brains were analyzed at p-15. β-galactosidase staining confirmed engraftment of lacZ-expressing NSCs in the cerebral cortex. Compared to untreated and sham-treated SD controls, NSC treatment alone provided a slight increase in Hex activity and significantly decreased GA2 content. However, NSCs had no effect on GM2 content when analyzed at p-15. NB-DGJ alone had no effect on Hex activity, but significantly reduced GM2 and GA2 content. Hex activity was slightly elevated in the NSC + drug-treated mice. GM2 and GA2 content in the dual treated mice were similar to that of the NB-DGJ treated mice. These data indicate that NB-DGJ alone was more effective in targeting storage in juvenile SD mice than were NSCs alone. No additive or synergistic effect between NSC and drug was found in these juvenile SD mice.
Starting Page	1335
Ending Page	1343
Page Count	9
File Format	PDF
ISSN	03643190
Journal	Neurochemical Research
Volume Number	37
Issue Number	6
e-ISSN	15736903
Language	English
Publisher	Springer US
Publisher Date	2012-02-25
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sandhoff disease Stem cell Substrate reduction therapy Gangliosides Neurology Biochemistry Neurosciences Neurochemistry Cell Biology
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Cellular and Molecular Neuroscience

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