Therapeutic Approaches to the Challenge of Neuronal Ceroid Lipofuscinoses
CURRENT PHARMACEUTICAL BIOTECHNOLOGY
Authors: Kohan, R.; Cismondi, I. A.; Oller-Ramirez, A. M.; Guelbert, N.; Tapia Anzolini, V.; Alonso, G.; Mole, S. E.; Dodelson de Kremer, R.; Noher de Halac, I.
Abstract
The Neuronal Ceroid Lipofuscinoses (NCLs) are lysosomal storage diseases (LSDs) affecting the central nervous system (CNS), with generally with recessive inheritance. They are characterized by pathological lipofuscin-like material accumulating in cells. The clinical phenotypes at all onset ages show progressive loss of vision, decreasing cognitive and motor skills, epileptic seizures and premature death, with dementia without visual loss prominent in the rarer adult forms. Eight causal genes, CLN10/CTSD, CLN1/PPT1, CLN2/TPP1, CLN3, CLN5, CLN6, CLN7/MFSD8, CLN8, with more than 269 mutations and 49 polymorphisms (http://www.ucl.ac.uk/ncl) have been described. Other NCL genes are hypothesized, including CLN4 and CLN9; CLCN6, CLCN7 and possibly SGSH are under study. Some therapeutic strategies applied to other LSDs with significant systemic involvement would not be effective in NCLs due to the necessity of passing the blood brain barrier to prevent the neurodegeneration, repair or restore the CNS functionality. There are therapies for the NCLs currently at preclinical stages and under phase 1 trials to establish safety in affected children. These approaches involve enzyme replacement, gene therapy, neural stem cell replacement, immune therapy and other pharmacological approaches. In the next decade, progress in the understanding of the natural history and the biochemical and molecular cascade of events relevant to the pathogenesis of these diseases in humans and animal models will be required to achieve significant therapeutic advances.
Novel Genes Affecting Blood Pressure Detected Via Gene-Based Association Analysis
G3-GENES GENOMES GENETICS
Authors: Zhang, Huan; Mo, Xing-Bo; Xu, Tan; Bu, Xiao-Qing; Lei, Shu-Feng; Zhang, Yong-Hong
Abstract
Hypertension is a common disorder and one of the most important risk factors for cardiovascular diseases. The aim of this study was to identify more novel genes for blood pressure. Based on the publically available SNP-based P values of a meta-analysis of genome-wide association studies, we performed an initial gene-based association study in a total of 69,395 individuals. To find supplementary evidence to support the importance of the identified genes, we performed GRAIL (gene relationships among implicated loci) analysis, protein-protein interaction analysis, functional annotation clustering analysis, coronary artery disease association analysis, and other bioinformatics analyses. Approximately 22,129 genes on the human genome were analyzed for blood pressure in gene-based association analysis. A total of 43 genes were statistically significant after Bonferroni correction (P, 2.3 < 10(-6)). The evidence obtained from the analyses of this study suggested the importance of ID1 (P = 2.0 x 10(-6)), CYP17A1 (P = 4.58 x 10(-9)), ATXN2 (P = 1.07 x 10(-13)), CLCN6 (P = 4.79 x 10(-9)), FURIN (P = 1.38 x 10(-6)), HECTD4 (P = 3.95 x 10(-11)), NPPA (P = 1.60 x 10(-6)), and PTPN11 (P = 8.89 x 10(-10)) in the genetic basis of blood pressure. The present study found some important genes associated with blood pressure, which might provide insights into the genetic architecture of hypertension.