Introduction: The accurate detection of breakpoint regions of disease-associated chromosomal rearrangements helps understand the molecular mechanisms and identify the risks involved with disrupted genes.
Methods: In this study, a girl with growth retardation is characterized using positional cloning and genome sequencing. The techniques include fluorescence in situ hybridization (FISH) with paint (WCP) and bacterial-artificial chromosomes (BAC) probes, PCR, real-time PCR, and short and long-read sequencing.
Fabry disease (FD) is a treatable X linked lysosomal storage disorder with a wide phenotypic spectrum. There is a scarcity of published data on the burden of FD in India. This study evaluates the clinical and molecular spectrum of Indian patients with FD.
View Article and Find Full Text PDFObjective: To ascertain the performance of exome sequencing (ES) technology for determining the etiological basis of abnormal perinatal phenotypes and to study the impact of comprehensive phenotyping on variant prioritization.
Methods: A carefully selected cohort of 32/204 fetuses with abnormal perinatal phenotypes following postmortem/postnatal deep phenotyping underwent ES to identify a causative variant for the fetal phenotype. A retrospective comparative analysis of the prenatal versus postmortem/postnatal phenotype-based variant prioritization was performed with aid of Phenolyzer software.
A patient referred for prenatal diagnostics, after first-trimester ultrasound due to a previous child with Leber congenital amaurosis, was suggestive of a Meckel syndrome-like phenotype. Fetal autopsy confirmed the multiple anomalies, and whole-exome sequencing of the fetal DNA identified a pathogenic variant in the gene, previously identified in the elder sibling, and a variant causative of Meckel syndrome 1 in the gene. Reporting the mutation, which was present in heterozygous state in the elder sibling, as a secondary finding would have enabled the parents to be tested for carrier status of the same variant and appropriate counseling could have been provided prior to the onset of the pregnancy.
View Article and Find Full Text PDFDisease associated chromosomal rearrangements often have break points located within disease causing genes or in their vicinity. The purpose of this study is to characterize a balanced reciprocal translocation in a girl with intellectual disability and seizures by positional cloning and whole genome sequencing. The translocation was identification by G- banding and confirmed by WCP FISH.
View Article and Find Full Text PDFIncreasing drug resistance in Plasmodium falciparum is an important global health burden because it reverses the malarial control achieved so far. Hence, understanding the molecular mechanisms of drug resistance is the epicenter of the development agenda for novel diagnostic and therapeutic (drugs/vaccines) targets for malaria. In this study, we report global comparative transcriptome profiling (RNA-Seq) to characterize the difference in the transcriptome between 48-h intraerythrocytic stage of chloroquine-sensitive and chloroquine-resistant P.
View Article and Find Full Text PDFThe emergence and distribution of drug resistance in malaria are serious public health concerns in tropical and subtropical regions of the world. However, the molecular mechanism of drug resistance remains unclear. In the present study, we performed a high-throughput RNA-Seq to identify and characterize the differentially expressed genes between the chloroquine (CQ) sensitive (3D7) and resistant (Dd2) strains of Plasmodium falciparum.
View Article and Find Full Text PDFA compensatory mutation (CM) counter balances lethal effects of a deleterious mutation (DM), ensuring the persistence of both through natural selection. However, little is known about the biological aspects of CMs those restore the structural alterations of proteins caused by slightly DMs. Here, by analyzing the evolution of the UDP-glycosyltransferase 73B4 protein among monocot-dicot plants, we investigate the occurrence of CMs around slightly DMs in 3D space.
View Article and Find Full Text PDFTNT, accidentally released at several manufacturing sites, contaminates ground water and soil. It has a toxic effect to algae and invertebrate, and chronic exposure to TNT also causes harmful effects to human. On the other hand, many plants including Arabidopsis thaliana have the ability to metabolize TNT either completely or at least to a reduced less toxic form.
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