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An autonomous laboratory for the accelerated synthesis of novel materials - Vimarsana News

An autonomous laboratory for the accelerated synthesis of novel materials

To close the gap between the rates of computational screening and experimental realization of novel materials1,2, we introduce the A-Lab, an autonomous laboratory for the solid-state synthesis of inorganic powders. This platform uses computations, historical data from the literature, machine learning (ML) and active learning to plan and interpret the outcomes of experiments performed using robotics. Over 17 days of continuous operation, the A-Lab realized 41 novel compounds from a set of 58 targets including a variety of oxides and phosphates that were identified using large-scale ab ini...

Source: nature.com
Wireless electrical–molecular quantum signalling for cancer cell apoptosis - Vimarsana News

Wireless electrical–molecular quantum signalling for cancer cell apoptosis

Quantum biological tunnelling for electron transfer is involved in controlling essential functions for life such as cellular respiration and homoeostasis. Understanding and controlling the quantum effects in biology has the potential to modulate biological functions. Here we merge wireless nano-electrochemical tools with cancer cells for control over electron transfer to trigger cancer cell death. Gold bipolar nanoelectrodes functionalized with redox-active cytochrome c and a redox mediator zinc porphyrin are developed as electric-field-stimulating bio-actuators, termed bio-nanoantennae. We sh...

Source: nature.com
Long-molecule scars of backup DNA repair in BRCA1- and BRCA2-deficient cancers - Vimarsana News

Long-molecule scars of backup DNA repair in BRCA1- and BRCA2-deficient cancers

Homologous recombination (HR) deficiency is associated with DNA rearrangements and cytogenetic aberrations1. Paradoxically, the types of DNA rearrangements that are specifically associated with HR-deficient cancers only minimally affect chromosomal structure2. Here, to address this apparent contradiction, we combined genome-graph analysis of short-read whole-genome sequencing (WGS) profiles across thousands of tumours with deep linked-read WGS of 46 BRCA1- or BRCA2-mutant breast cancers. These data revealed a distinct class of HR-deficiency-enriched rearrangements called reci...

Source: nature.com
Entropic repulsion of cholesterol-containing layers counteracts bioadhesion - Vimarsana News

Entropic repulsion of cholesterol-containing layers counteracts bioadhesion

Control of adhesion is a striking feature of living matter that is of particular interest regarding technological translation1–3. We discovered that entropic repulsion caused by interfacial orientational fluctuations of cholesterol layers restricts protein adsorption and bacterial adhesion. Moreover, we found that intrinsically adhesive wax ester layers become similarly antibioadhesive when containing small quantities (under 10 wt%) of cholesterol. Wetting, adsorption and adhesion experiments, as well as atomistic simulations, showed that repulsive characteristics depend on the spe...

Source: nature.com
SARS-CoV-2 nucleocapsid protein linked to COVID-19 severity - Vimarsana News

SARS-CoV-2 nucleocapsid protein linked to COVID-19 severity

The emergence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that causes respiratory coronavirus disease 2019 (COVID-19) triggered an unprecedented public health emergency. Human mobility patterns were fundamental to the spread of SARS-CoV-2 globally. The situation is particularly acute in a country like Saudi Arabia, which has seen more than 750,000 cases and over 9,000 deaths as of March 30th, 2022.