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Synthesis and Application of 3,3-Difluoro Sialic Acid as a Sialyltransferase and Neuraminidase Inhibitor

13 hours 48 minutes ago
Sialic acid (Neu5Ac) is a monosaccharide terminating glycoconjugates, serving as ligands for lectins in health and disease. Tools to target sialyltransferases (STs) and neuraminidases (NEUs) are important in the study of sialoglycans. 3FaxNeu5Ac is a common ST inhibitor, while 2,3diFNeu5Ac is a covalent mechanism-based NEU inactivator. Here, we demonstrate the advantages of having two fluorines at C3 for both classes of inhibitors. Motivated by the finding that 3FaxNeu5Ac is transferred by STs...
Dhanraj Kumawat

Effector-triggered immunity in oilseed crops is expanded despite the restricted specificity of the receptor ZAR1

1 day 13 hours ago
Effector-triggered immunity (ETI), mediated by nucleotide-binding leucine-rich repeat immune receptors (NLRs), plays a critical role in protecting plants from pathogens. While the scope of ETI elicited by Pseudomonas syringae type III effectors on Arabidopsis thaliana has been characterized, no equivalent study has been performed on related oilseed crops, limiting our ability to translate fundamental plant immunity research into crop protection strategies. Here, we present a comprehensive screen...
Clare Breit-McNally

Novel roles of the Epstein-Barr virus BRRF1 protein in post-transcriptional RNA regulation

1 day 13 hours ago
In lytic infection, Epstein-Barr virus (EBV) proteins manipulate cellular processes in multiple ways to facilitate virion production and overcome host antiviral responses. Here, we screened a library of EBV lytic proteins for those that manipulate or localize to cellular processing bodies (PBs), known to play important roles in RNA surveillance and miRNA-mediated translational control. One EBV protein, BRRF1, was identified that partially localized to PBs, and affinity purification-mass...
Ashley M Campbell

Identification of substrates of the human mitochondrial ClpXP protease and its implications for Perrault syndrome

1 day 13 hours ago
The ClpXP ATP-dependent unfoldase-protease complex plays important roles in maintaining protein homeostasis in the mitochondria. Pathogenic variants of CLPP have been identified in patients with Perrault syndrome type 3 (PRLTS3), a rare recessive mitochondrial disease characterized by sensorineural hearing loss, ovarian dysfunction, and neurological abnormalities. However, it remains unclear how these ClpP variants cause this disease. Here we identify three cellular substrates of ClpXP using...
Mazen E Aljghami

Long-read RNA sequencing identifies non-coding isoform switching as a regulator of cell fate

1 day 13 hours ago
Development of long-read RNA sequencing technologies has paved the way to the exploration of RNA isoform diversity and its relevance in regulating cell fate. However, identifying new functional isoforms is still very difficult. Here, we leverage long-read RNA sequencing to study changes in isoforms during somatic cell reprogramming and identify novel isoforms occurring throughout cell state transitions. We demonstrate tight regulation of non-coding isoforms and show that isoform switching plays...
Victoire Fort

TheCellVision.org repository: expansion with high-content cell imaging projects on eukaryotic intracellular organization and DUB biology

3 days 13 hours ago
High-content cell imaging approaches enable the systematic characterization of cellular function through the acquisition of multimodal information from large cohorts of live single cells. Yet, due to their scale and complexity, data acquired via such approaches are often challenging to meaningfully share across laboratories and effectively use for independent studies. Since its inception, the main purpose of TheCellVision.org repository has been to fill this gap, providing the research community...
Myra Paz David Masinas

From health trackers to compasses: can wearables and apps deliver on their health prevention promise?

3 days 13 hours ago
Despite long-standing knowledge of the significant contribution of lifestyle factors in the development of chronic conditions, lifestyle preventive strategies have failed to lower chronic disease rates globally [1,2]. Personal digital health technologies (P-DHTs) that can be worn on the person (wearables, smart devices and mobile phones) can be used for self-monitoring directly by the individual increasing health agency and access, with promise for transformation in health prevention. While...
S M Goodday

Feasibility, Accuracy, and Acceptability of Self-Collected Dried Blood Spots for Hepatitis C Virus, Hepatitis B Virus, and SARS-CoV-2 Testing

3 days 13 hours ago
CONCLUSIONS: Mail-based self-collected DBS enables remote testing by allowing nonmedically trained individuals to reliably collect their own samples. High concordance and acceptability indicate that this method is viable for addressing health care access challenges, particularly in populations motivated to seek testing.
Sarah S Tran

Optimal combination of broadly neutralizing antibodies for HIV: Sensitivity ranking determines efficacy

3 days 13 hours ago
Combination therapy with broadly neutralizing antibodies (bNAbs) holds great promise for human immunodeficiency virus (HIV) functional cure, yet a critical question remains: when multiple bNAbs with distinct pharmacokinetic and pharmacodynamic properties are available, which combinations are most effective, and what determines their performance? To address this, we develop an impulsive differential equation model that incorporates three bNAb mechanisms, namely blocking viral entry, enhancing...
Ting Guo

The revised diploid genome sequence of an individual human: A workflow for near telomere-to-telomere assemblies using only Oxford Nanopore Technologies Simplex-reads

4 days 13 hours ago
The first draft diploid genome assembly (HuRef) of an individual in 2007 was a milestone in genomics. Here, we report HuRef2.0, a revision of HuRef assembled using only Oxford Nanopore Technologies (ONT) Simplex-reads and the hifiasm assembler. Results are close in continuity to the telomere-to-telomere (T2T) assemblies but were assembled from standard DNA samples without using multiple sequencing and mapping technologies, including ultra-long-reads and/or proximity-ligation. Three ONT flowcells...
Si Lok

Recovering anaerobic bacterial genomes in saliva, tumour and blood whole genome sequencing data from patients with prostate cancer

1 week ago
Microbial constituents in the gastrointestinal tract, the urine and prostate tissue are being linked with clinical differences in prostate cancer, and a recent meta-analysis has linked periodontal disease to this cancer. Several hypotheses exist regarding how specific bacteria can contribute towards the development of prostate cancer. Recovering microbial genomes, and their genomic features, from clinical samples and investigating fine-scale taxonomy is a critical first step in investigating...
A Gihawi

Integrative analysis reveals extensive interactions among C2H2 zinc finger proteins at chromatin loop anchors

1 week 1 day ago
Cys2-His2-zinc-finger proteins (C2H2-ZFPs) form the largest class of human transcription factors, yet their potential roles in higher-order genome organization remain poorly defined. To date, only a few C2H2-ZFPs, e.g. CTCF, have been implicated in chromatin organization. Here, we systematically examined the global relationship between C2H2-ZFPs and long-range chromatin interactions (LRIs). By integrating ChIP-seq datasets for 216 C2H2-ZFPs with genome-wide chromatin interaction maps, we find...
Ernest Radovani

Colonoscopy screening outcomes in Lynch syndrome and differential colorectal cancer paths among MLH1/MSH2 carriers

1 week 1 day ago
CONCLUSIONS: Our study identified differences in MLH1 and MSH2 cancer development which may suggest distinct mechanisms impacting CRC. The inverse relationship between adenoma detection and CRC risk in MSH2 carriers enhances our understanding of the adenoma-carcinoma sequence, while the lack of association in MLH1 carriers suggests alternative carcinogenic pathways requiring further study.
Laurent Briollais

The molecular heterogeneity and clinical impact of genomic driver alterations in prostate cancer

1 week 4 days ago
Prostate cancer is a common malignancy with a heterogeneous disease course. Prior studies have identified a paucity of point mutations in protein-coding genes and only a few clinically relevant driver alterations. Here, using the Pan Prostate Cancer Group whole genome sequencing dataset from 1001 men, we perform an integrative analysis of cancer driver genes by quantifying recurrent genomic alterations among small mutations, structural variants, and copy number alterations in 961 primary...
Diogo Pellegrina

Translational Neuroscience of Autism Spectrum Disorder : Genetics: Contribution Not Correlation

1 week 4 days ago
Ever since the observation of a robust heriditary component of autism, the scientific community has invested efforts and resources toward the identification of genetic variation associated with this condition. The current chapter provides an overview of of these efforts in a historical context, outlining how increasingly precise methods to query the genome along with unprecedented levels of international collaboration are starting to eludicate the complex genetic architecture of autism.
Marla Mendes