Targeting protein-ligand neosurfaces with a generalizable deep learning tool.

Molecular recognition events between proteins drive biological processes in living systems. However, higher levels of mechanistic regulation have emerged, in which protein-protein interactions are conditioned to small molecules. Despite recent advances, computational tools for the design of new chemically induced protein interactions have remained a challenging task for the field.

Association of advance care planning with hospital use and costs at the end of life: a population-based retrospective cohort study.

Objective: To investigate associations between the availability and timing of digitally available advance care planning (ACP) documents and hospital use and costs during the last 6 months of life.

Design: Retrospective population-based cohort study using data linkage.

Setting: 11 public hospitals in Queensland, Australia.

Gentle Rhodamines for Live-Cell Fluorescence Microscopy.

Rhodamines have been continuously optimized in brightness, biocompatibility, and color to fulfill the demands of modern bioimaging. However, the problem of phototoxicity caused by the excited fluorophore under long-term illumination has been largely neglected, hampering their use in time-lapse imaging. Here we introduce cyclooctatetraene (COT) conjugated rhodamines that span the visible spectrum and exhibit significantly reduced phototoxicity.

Rigidity percolation and active advection synergize in the actomyosin cortex to drive amoeboid cell motility.

Spontaneous locomotion is a common feature of most metazoan cells, generally attributed to the properties of actomyosin networks. This force-producing machinery has been studied down to the most minute molecular details, especially in lamellipodium-driven migration. Nevertheless, how actomyosin networks work inside contraction-driven amoeboid cells still lacks unifying principles.

Antibody-peptide conjugates deliver covalent inhibitors blocking oncogenic cathepsins.

Cysteine cathepsins are a family of proteases that are relevant therapeutic targets for the treatment of different cancers and other diseases. However, no clinically approved drugs for these proteins exist, as their systemic inhibition can induce deleterious side effects. To address this problem, we developed a modular antibody-based platform for targeted drug delivery by conjugating non-natural peptide inhibitors (NNPIs) to antibodies.

Fluorescent fatty acid conjugates for live cell imaging of peroxisomes.

Peroxisomes are eukaryotic organelles that are essential for multiple metabolic pathways, including fatty acid oxidation, degradation of amino acids, and biosynthesis of ether lipids. Consequently, peroxisome dysfunction leads to pediatric-onset neurodegenerative conditions, including Peroxisome Biogenesis Disorders (PBD). Due to the dynamic, tissue-specific, and context-dependent nature of their biogenesis and function, live cell imaging of peroxisomes is essential for studying peroxisome regulation, as well as for the diagnosis of PBD-linked abnormalities.

Home symptom management training programme: carer evaluation.

Objectives: Most people say if they had a terminal illness, they would prefer to be cared for at home and, if possible, to die there. Often this is not possible without a carer to assist with on-going practical care and symptom management. If breakthrough symptoms are not treated in a timely manner, symptoms can escalate quickly causing increased suffering resulting in unwanted hospital transfers.

An evaluation of an online education programme to improve nurses' ability to support carers to use subcutaneous medicines.

Background: Most Australians say they wish to die at home, but many are admitted to inpatient facilities for symptom management. Caring@home resources can be used to support informal carers to manage breakthrough symptoms safely using subcutaneous medicines. Nurses require education about how to teach informal carers to use these resources.

Chemical Probe for Imaging of Polo-like Kinase 4 and Centrioles.

Polo-like kinase (Plk4) is a serine/threonine-protein kinase that is essential for biogenesis of the centriole organelle and is enriched at centrioles. Herein, we introduce Cen-TCO, a chemical probe based on the Plk4 inhibitor centrinone, to image Plk4 and centrioles in live or fixed cultured human cells. Specifically, we established a bio-orthogonal two-step labeling system that enables the Cen-TCO-mediated imaging of Plk4 by STED super-resolution microscopy.

Advance Care Planning in Australia: Progress in research and implementation.

Advance Care Planning in Australia has its foundations in the Respecting Patient Choices model, which was initially implemented in one state. The Australian population is diverse, ageing and geographically dispersed, with health and aged care services provided by a range of different organisations and regulated at different levels. Key challenges in ACP implementation include discomfort with ACP discussion, inconsistent legislation and ACP documentation across jurisdictions, poor quality control of ACP documents and difficulties accessing ACP documents at the point of care.

Tubulin engineering by semi-synthesis reveals that polyglutamylation directs detyrosination.

Microtubules, a critical component of the cytoskeleton, carry post-translational modifications (PTMs) that are important for the regulation of key cellular processes. Long-lived microtubules, in neurons particularly, exhibit both detyrosination of α-tubulin and polyglutamylation. Dysregulation of these PTMs can result in developmental defects and neurodegeneration.

A covalently linked probe to monitor local membrane properties surrounding plasma membrane proteins.

Functional membrane proteins in the plasma membrane are suggested to have specific membrane environments that play important roles to maintain and regulate their function. However, the local membrane environments of membrane proteins remain largely unexplored due to the lack of available techniques. We have developed a method to probe the local membrane environment surrounding membrane proteins in the plasma membrane by covalently tethering a solvatochromic, environment-sensitive dye, Nile Red, to a GPI-anchored protein and the insulin receptor through a flexible linker.

A whole-of-community program of advance care planning for end-of-life care.

Since 2015 a whole-of-community program to promote advance care planning (ACP) within one Queensland Hospital and Health Service (HHS) catchment has spread statewide, financed by Queensland Health (QH) agencies and led by the Statewide Office of Advance Care Planning (SOACP). The program aims to identify ACP-eligible patients, invite and finalise ACP discussions, and ensure documented care preferences are easily retrievable by clinicians to guide future care if a person loses capacity. The SOACP established a digital infrastructure whereby quality-audited ACP documents are uploaded to a software platform accessible to all QH clinicians, private medical specialists, ambulance paramedics, general practitioners (GPs), and registered nurses, including those in residential aged care facilities (RACFs).

Phage Display Selected Cyclic Peptide Inhibitors of Kallikrein-Related Peptidases 5 and 7 and Their Delivery to the Skin.

Kallikrein-related peptidases 5 (KLK5) and 7 (KLK7) are serine proteases with homeostatic functions in the epidermis that play a critical role in Netherton syndrome (NS), a rare yet life-threatening genetic disorder that currently lacks specific treatment. Previous research suggests that controlling KLKs could lead to the development of NS therapies, but existing synthetic inhibitors have limitations. Herein, we used phage display to screen libraries comprising more than 100 billion different cyclic peptides and found selective, high-affinity inhibitors of KLK5 ( = 2.

Flipper Probes for the Community.

This article describes four fluorescent membrane tension probes that have been designed, synthesized, evaluated, commercialized and applied to current biology challenges in the context of the NCCR Chemical Biology. Their names are Flipper-TR, ER Flipper-TR, Lyso Flipper-TR, and Mito Flipper-TR. They are available from Spirochrome.

Carer administration of as-needed subcutaneous medication for breakthrough symptoms in people dying at home: the CARiAD feasibility RCT.

Background: Most people who are dying want to be cared for at home, but only half of them achieve this. The likelihood of a home death often depends on the availability of able and willing lay carers. When people who are dying are unable to take oral medication, injectable medication is used.

A ligand-based system for receptor-specific delivery of proteins.

Gene delivery using vector or viral-based methods is often limited by technical and safety barriers. A promising alternative that circumvents these shortcomings is the direct delivery of proteins into cells. Here we introduce a non-viral, ligand-mediated protein delivery system capable of selectively targeting primary skin cells in-vivo.

Photoactivation of silicon rhodamines via a light-induced protonation.

Photoactivatable fluorophores are important for single-particle tracking and super-resolution microscopy. Here we present a photoactivatable fluorophore that forms a bright silicon rhodamine derivative through a light-dependent protonation. In contrast to other photoactivatable fluorophores, no caging groups are required, nor are there any undesired side-products released.

SIMPLE: Structured illumination based point localization estimator with enhanced precision.

We present a structured illumination microscopy based point localization estimator (SIMPLE) that achieves a 2-fold increase in single molecule localization precision compared to conventional centroid estimation methods. SIMPLE advances the recently introduced MINFLUX concept by using precisely phase-shifted sinusoidal wave patterns as nanometric rulers for simultaneous particle localization based on photon count variation over a 20 μm field of view. We validate SIMPLE in silico and experimentally on a TIRF-SIM setup using a digital micro-mirror device (DMD) as a spatial light modulator.

Home-based palliative care.

Background: While most people say they would prefer to be cared for and to die at home, this outcome is often not achieved. This represents a service gap that general practitioners (GPs) are optimally positioned to fill.

Objectives: The aim of this paper is to synthesise existing evidence-based frameworks of palliative care together with other resources, to present a cohesive model of care that GPs can easily systematise to guide high-quality home-based palliative care.

CARer-ADministration of as-needed subcutaneous medication for breakthrough symptoms in homebased dying patients (CARiAD): study protocol for a UK-based open randomised pilot trial.

Background: While the majority of seriously ill people wish to die at home, only half achieve this. The likelihood of someone dying at home often depends on the availability of able and willing lay carers to support them. Dying people are usually unable to take oral medication.

A Chemogenetic Approach for the Optical Monitoring of Voltage in Neurons.

Optical monitoring of neuronal voltage using fluorescent indicators is a powerful approach for the interrogation of the cellular and molecular logic of the nervous system. Herein, a semisynthetic tethered voltage indicator (STeVI1) based upon nile red is described that displays voltage sensitivity when genetically targeted to neuronal membranes. This environmentally sensitive probe allows for wash-free imaging and faithfully detects supra- and sub-threshold activity in neurons.

Using Laser-Induced Rydberg Spectroscopy diagnostic for direct measurements of the local electric field in the edge region of NSTX/NSTX-U: Modeling.

We discuss a novel diagnostic allowing direct measurements of the local electric field in the edge region of NSTX/NSTX-U. This laser based diagnostic's principle consists of depleting the naturally populated = 3 level to a Rydberg state-sensitive to electric fields-that will result in a suppression of part of the emission. We refer to this approach as Laser-Induced Rydberg Spectroscopy.

Targeting STING with covalent small-molecule inhibitors.

Aberrant activation of innate immune pathways is associated with a variety of diseases. Progress in understanding the molecular mechanisms of innate immune pathways has led to the promise of targeted therapeutic approaches, but the development of drugs that act specifically on molecules of interest remains challenging. Here we report the discovery and characterization of highly potent and selective small-molecule antagonists of the stimulator of interferon genes (STING) protein, which is a central signalling component of the intracellular DNA sensing pathway.