Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Medicine and Health Sciences
Mucopolysaccharidosis Iva: Current Disease Models And Drawbacks, Andrés Felipe Leal, Carlos Javier Alméciga-Díaz, Shunji Tomatsu
Mucopolysaccharidosis Iva: Current Disease Models And Drawbacks, Andrés Felipe Leal, Carlos Javier Alméciga-Díaz, Shunji Tomatsu
Department of Pediatrics Faculty Papers
Mucopolysaccharidosis IVA (MPS IVA) is a rare disorder caused by mutations in the N-acetylgalactosamine-6-sulfate-sulfatase (GALNS) encoding gene. GALNS leads to the lysosomal degradation of the glycosaminoglyccreasans keratan sulfate and chondroitin 6-sulfate. Impaired GALNS enzymes result in skeletal and non-skeletal complications in patients. For years, the MPS IVA pathogenesis and the assessment of promising drugs have been evaluated using in vitro (primarily fibroblasts) and in vivo (mainly mouse) models. Even though value information has been raised from those studies, these models have several limitations. For instance, chondrocytes have been well recognized as primary cells affected in MPS IVA and responsible for …
Evaluation Of The Orally Bioavailable 4-Phenylbutyrate-Tethered Trichostatin A Analogue Ar42 In Models Of Spinal Muscular Atrophy, Casey J. Lumpkin, Ashlee W. Harris, Andrew J. Connell, Ryan W. Kirk, Joshua A. Whiting, Luciano Saieva, Livio Pellizzoni, Arthur H.M. Burghes, Matthew E.R. Butchbach
Evaluation Of The Orally Bioavailable 4-Phenylbutyrate-Tethered Trichostatin A Analogue Ar42 In Models Of Spinal Muscular Atrophy, Casey J. Lumpkin, Ashlee W. Harris, Andrew J. Connell, Ryan W. Kirk, Joshua A. Whiting, Luciano Saieva, Livio Pellizzoni, Arthur H.M. Burghes, Matthew E.R. Butchbach
Department of Pediatrics Faculty Papers
Proximal spinal muscular atrophy (SMA) is a leading genetic cause for infant death in the world and results from the selective loss of motor neurons in the spinal cord. SMA is a consequence of low levels of SMN protein and small molecules that can increase SMN expression are of considerable interest as potential therapeutics. Previous studies have shown that both 4-phenylbutyrate (4PBA) and trichostatin A (TSA) increase SMN expression in dermal fibroblasts derived from SMA patients. AR42 is a 4PBA-tethered TSA derivative that is a very potent histone deacetylase inhibitor. SMA patient fibroblasts were treated with either AR42, AR19 (a …
Effect Of The Butyrate Prodrug Pivaloyloxymethyl Butyrate (An9) On A Mouse Model For Spinal Muscular Atrophy., Jonathan D. Edwards, Matthew E.R. Butchbach
Effect Of The Butyrate Prodrug Pivaloyloxymethyl Butyrate (An9) On A Mouse Model For Spinal Muscular Atrophy., Jonathan D. Edwards, Matthew E.R. Butchbach
Department of Pediatrics Faculty Papers
Spinal muscular atrophy (SMA) is an early-onset motor neuron disease that leads to loss of muscle function. Butyrate (BA)-based compounds markedly improve the survival and motor phenotype of SMA mice. In this study, we examine the protective effects of the BA prodrug pivaloyloxymethyl butyrate (AN9) on the survival of SMNΔ7 SMA mice. Oral administration of AN9 beginning at PND04 almost doubled the average lifespan of SMNΔ7 SMA mice. AN9 treatment also increased the growth rate of SMNΔ7 SMA mice when compared to vehicle-treated SMNΔ7 SMA mice. In conclusion, BA prodrugs like AN9 have ameliorative effects on SMNΔ7 SMA mice.
Proteomic Assessment Of A Cell Model Of Spinal Muscular Atrophy., Chia-Yen Wu, Dosh Whye, Lisa Glazewski, Leila Choe, Douglas Kerr, Kelvin H Lee, Robert W Mason, Wenlan Wang
Proteomic Assessment Of A Cell Model Of Spinal Muscular Atrophy., Chia-Yen Wu, Dosh Whye, Lisa Glazewski, Leila Choe, Douglas Kerr, Kelvin H Lee, Robert W Mason, Wenlan Wang
Department of Pediatrics Faculty Papers
BACKGROUND: Deletion or mutation(s) of the survival motor neuron 1 (SMN1) gene causes spinal muscular atrophy (SMA), a neuromuscular disease characterized by spinal motor neuron death and muscle paralysis. Complete loss of the SMN protein is embryonically lethal, yet reduced levels of this protein result in selective death of motor neurons. Why motor neurons are specifically targeted by SMN deficiency remains to be determined. In this study, embryonic stem (ES) cells derived from a severe SMA mouse model were differentiated into motor neurons in vitro by addition of retinoic acid and sonic hedgehog agonist. Proteomic and western blot analyses were …