Publications by authors named "Jose Ramon Barcenas Walls"

Background: Genome-wide association studies (GWAS) have identified genetic variants linked to fat metabolism and related traits, but rarely pinpoint causative variants. This limitation arises from GWAS not considering functional implications of noncoding variants that can affect transcription factor binding and potentially regulate gene expression. The aim of this study is to investigate a candidate noncoding functional variant within a genetic locus flagged by a GWAS SNP associated with non-alcoholic fatty liver disease (NAFLD), a condition characterized by liver fat accumulation in non-alcohol consumers.

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The ability to comprehensively analyze the chromatin state with single-cell resolution is crucial for understanding gene regulatory principles in heterogenous tissues or during development. Recently, we developed a nanobody-based single-cell CUT&Tag (nano-CT) protocol to simultaneously profile three epigenetic modalities-two histone marks and open chromatin state-from the same single cell. Nano-CT implements a new set of secondary nanobody-Tn5 fusion proteins to direct barcoded tagmentation by Tn5 transposase to genomic targets labeled by primary antibodies raised in different species.

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Background: Genome-wide association studies (GWAS) of diseases and traits have found associations to gene regions but not the functional SNP or the gene mediating the effect. Difference in gene regulatory signals can be detected using chromatin immunoprecipitation and next-gen sequencing (ChIP-seq) of transcription factors or histone modifications by aligning reads to known polymorphisms in individual genomes. The aim was to identify such regulatory elements in the human liver to understand the genetics behind type 2 diabetes and metabolic diseases.

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We present here the draft genome sequence of ITALIC! Streptococcus pneumoniaestrain MTY32702340SN814 isolated in Monterrey, Mexico, from a girl with bacterial meningitis. The strain belongs to the atypical and multidrug-resistant serogroup 19A. This is the first report in the literature of sequence type 3936 (ST3936) in ITALIC! S.

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We report here the draft genome sequence of aStreptococcus pneumoniaestrain isolated in Monterrey, Mexico, MTY1662SN214, from a man with purpura fulminans. The strain belongs to the invasive and multidrug-resistant serogroup 19A, sequence type 320 (ST320). The draft genome sequence consists of 60 large contigs, a total of 2,069,474 bp, and has a G+C content of 39.

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