Genetic screens are a key tool for linking phenotype and genotype. Transposon mutagenesis was one of the first genetic methodologies to associate genetic loci with phenotypes. The advent of next-generation sequencing transformed the use of this technique allowing rapid interrogation of whole genomes for genes that correlate with phenotype. One method is transposon directed insertion-site sequencing (TraDIS). Here we describe the method, recent developments in technology, and the advantages and disadvantages of this method compared to other genetic screening tools.
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http://dx.doi.org/10.1099/mic.0.001385 | DOI Listing |
Biomarkers that aid in early detection of neurodegeneration are needed to enable early symptomatic treatment and enable identification of people who may benefit from neuroprotective interventions. Increasing evidence suggests that sleep biomarkers may be useful, given the bi-directional relationship between sleep and neurodegeneration and the prominence of sleep disturbances and altered sleep architectural characteristics in several neurodegenerative disorders. This study aimed to demonstrate that sleep can accurately characterize specific neurodegenerative disorders (NDD).
View Article and Find Full Text PDFMol Biol (Mosk)
December 2024
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia.
SINEs are mobile genetic elements of multicellular eukaryotes that arose during evolution from various tRNAs, as well as from 5S rRNA and 7SL RNA. Like the genes of these RNAs, SINEs are transcribed by RNA polymerase III. The transcripts of some mammalian SINEs have the capability of AAUAAA-dependent polyadenylation, which is unique for transcript generated by RNA polymerase III.
View Article and Find Full Text PDFBMC Genomics
December 2024
School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
Background: The diversity-generating retroelements (DGRs) are a family of genetic elements that can produce mutations in target genes often related to ligand-binding functions, which possess a C-type lectin (CLec) domain that tolerates massive variations. They were first identified in viruses, then in bacteria and archaea from human-associated and environmental genomes. This DGR mechanism represents a fast adaptation of organisms to ever- changing environments.
View Article and Find Full Text PDFYale J Biol Med
December 2024
Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
In relation to ancient infections, a substantial number of retroviral sequences with persistent immunogenic potential were integrated within the human genome (HERVs). Under physiological conditions, coding sequences from HERVs can participate in cell/tissue homeostasis and physiological functions in an epigenetically controlled manner. However, HERV expression is susceptible to contribute to various pathologies, including autoinflammatory and autoimmune disorders, when reprogrammed by exogenous stimuli such as drugs or microbial infections.
View Article and Find Full Text PDFNat Biotechnol
December 2024
Laboratory of Microbiology, Wageningen University & Research, Wageningen, the Netherlands.
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