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A strategy of microglia replacement alleviates microgliopathy in a CSF1R I794T hotspot mutation mouse model of CSF1R-related disorder

Microglial replacement strategy to treat microgliopathy.

Colony-stimulating factor 1 receptor (CSF1R) gene mutation (I794T) is linked to primary microgliopathy manifesting as leukoencephalopathy.

The researchers define the clinical features of patients carrying the CSF1R p. I794T variant and establish a corresponding knockin mouse model.

The authors demonstrate that knockin mice exhibited hallmark features of CSF1R-related disorder (CSF1R-RD).

They show that Csf1rI792T/+ microglia adopt a disease associated state and that a microglial replacement strategy termed “duplicate-cyclic microglial depletion for transplantation” (DCMDT), mitigates cognitive and neuropathological deficits in CSF1R-RD. sciencenewshighlights ScienceMission https://sciencemission.com/microglia-replacement-18450

Li et al. define the clinical features of patients carrying the CSF1R p. I794T variant and establish a corresponding knockin mouse model. They show that Csf1rI792T/+ microglia adopt a disease-associated state and that a microglial replacement strategy, DCMDT, mitigates cognitive and neuropathological deficits in CSF1R-related disorder.

Continue reading “A strategy of microglia replacement alleviates microgliopathy in a CSF1R I794T hotspot mutation mouse model of CSF1R-related disorder” | >

Mechanism of Viral DNA Packaging in Phage T4 Using Single-Molecule Fluorescence Approaches

📊 Research Summary: The ImmunoSep trial demonstrates the potential for biomarker-guided immunotherapy in a subset of patients with sepsis.

This trial assessed whether immunotherapy tailored to individual immune dysregulation—macrophage activation–like syndrome and sepsis-induced immunoparalysis—could improve organ function among patients with sepsis-3.

Triglycerides induce endoplasmic reticulum lipid bilayer stress to activate PERK and enhance antifungal immunity

Fungal infections present persistent therapeutic challenges in immunocompromised populations, including individuals with acquired immunodeficiency syndrome (AIDS), organ transplant recipients receiving immunosuppressive therapy, long-term hospitalized patients, patients with cancer, and those receiving immunomodulatory agents.1 These infections demonstrate remarkable recalcitrance to conventional therapies, compounded by fungal adaptability to environmental stresses, the emergence of drug-resistant strains, and the limited availability of clinically available antifungal agents.2 Systemic fungemia has alarmingly high mortality rates, accounting for approximately 1.5 million annual deaths worldwide, a burden comparable to AIDS-and tuberculosis-related mortality.3 Candida albicans is the most frequently isolated fungal pathogen in clinical settings. Despite therapeutic advances, invasive candidiasis persists with mortality rates exceeding 40%,4 underscoring the urgent need to elucidate host immune mechanisms against fungal pathogens.

When innate immune cells, such as macrophages, dendritic cells, and neutrophils, encounter fungi, the pattern recognition receptors (PRRs) on their surface recognize evolutionarily conserved fungal cell wall components, including β-glucan and α-mannan (classified as pathogen-associated molecular patterns), thereby initiating downstream signaling cascades and immune responses. The primary PRRs involved in fungal recognition are C-type lectin receptors (CLRs) and Toll-like receptors. The CLR family comprises Dectin-1 (specific for β-glucan), Dectin-2/3 (mannan sensors), Mincle, dendritic cell-specific intercellular adhesion molecule-grabbing nonintegrin, and CD23.5 Upon ligand binding, CLRs initiate the phosphorylation of the immunoreceptor tyrosine-based activation motif within the Dectin-1 cytoplasmic tail and the recruitment of the Fc receptor γ-chain to Dectin-2 or Mincle, which serves as a docking site for spleen tyrosine kinase (SYK).

Circadian rhythm heterogeneity modulates drug response variations in neuroblastoma models

Ector et al. uncover circadian heterogeneity across neuroblastoma cell models and link rhythmic strength to drug sensitivity. Their findings suggest that circadian competence may influence treatment outcomes, pointing to chronotherapy as a potential avenue for improving pediatric cancer care.

Can we grow life on Mars? Experiments show potential in simulated extraterrestrial soil

Life’s capacity to survive in simulated lunar and Martian soils has been explored in two papers published in Scientific Reports. Treating simulated lunar soil with both symbiotic fungi and worm-produced compost can significantly improve the likelihood of reproduction for chickpea plants growing in the soil, indicates one study. A separate paper suggests that some microbes may be able to absorb enough water from the atmosphere to grow in simulated Martian soil at atmospheric humidity levels comparable to those on the planet.

Lunar soil—known technically as lunar regolith —does not support healthy plant growth, as it contains high concentrations of certain metals such as aluminum and zinc, does not allow water to filter through easily, and lacks the microbiome found in Earth soils. Previous research has investigated several ways to improve the fertility of lunar soil, although plants grown in these treated soils typically display various signs of stress, including stunted growth and leaf yellowing.

Jessica Atkin and colleagues grew chickpea plants (Cicer arietinum) in samples of simulated lunar soil that they treated in two ways: by adding vermicompost —produced by red wiggler earthworms (Eisenia fetida) as they decompose biowaste—at different concentrations; and by inoculating half of the soil samples at each concentration with arbuscular mycorrhizal fungi (AMF). On Earth, AMF improve the nutrient circulation properties of soil, reduce the quantity of potentially toxic metals available for absorption by plants, and produce a protein that helps bind soil together to reduce erosion. The authors then measured the quantity and weight of chickpea seeds produced, along with the plants’ heights and root mass.

Electrohydrodynamic bioprinting creates living muscle tissues with tightly aligned cells inside

Building functional human muscle in the laboratory has long been a goal of regenerative medicine, but one stubborn obstacle remains: real muscle is not just a mass of cells. Its strength and function depend on exquisitely ordered myofibers, all aligned in precise directions that vary from one muscle to another. Reproducing that internal order has proved far harder than shaping muscle tissue into the right external form.

Published in the International Journal of Extreme Manufacturing, a research team from Xi’an Jiaotong University has now found a way to solve both problems at once. By using electric forces during the electrohydrodynamic bioprinting process, they have created living muscle tissues whose cells naturally line up just as they do in the human body, showing how electric forces can be used not just to precisely bioprint tissue, but to quietly instruct cells how to organize themselves.

Skeletal muscles come in many forms. Some fibers run in long, parallel bundles that power our arms and legs. Others curve or fan out, helping us grip, chew or control movement with precision. Despite these differences, all muscles share a common microscopic feature: their cells are highly aligned. This alignment allows individual muscle cells to fuse into long fibers and contract efficiently. Without it, muscle tissue is weak and poorly functional.

The structure of consciousness

The nature of human experience, or consciousness, has divided thinkers for centuries. The Scottish philosopher Hume saw experience as nothing more than a bundle of perceptions, and denied the existence of a self holding them all together. Kant disagreed, arguing that sensation had to be organised by concepts for there to be experience. It is a debate that has echoed through the Western tradition. You might think science would have settled the matter, but the same dispute is still present amongst neuroscientists. Some argue that sensation is independent of how we think, a neutral bedrock of data which enables us to experience reality. While others claim what we take to be reality is an illusion created by our brain. Do our thoughts and concepts shape and structure experience and what we take to be reality? Are current theories of neuroscience taking sides in this deeper underlying philosophical dispute? Does the existence of the self and the nature of reality depend on our philosophical outlook, or is there a fact of the matter that we might uncover?

Andrew Yang: UBI Before UHI

Solving Job Loss, and the Future of Work ## Andrew Yang advocates for the implementation of Universal Basic Income (UBI) as a necessary solution to address job loss, income inequality, and societal unrest caused by technological advancements and AI-driven changes in the economy ## ## Questions to inspire discussion.

Universal Basic Income Implementation.

🔹 Q: What UBI amount should be set to provide an effective safety net?

A: UBI should be set at twice the poverty level, around $25,000 per person per year, providing enough for survival but not happiness to maintain work incentives while protecting against economic collapse.

🔹 Q: How can UBI be funded without government action initially?

A: Well-resourced tech billionaires could fund UBI directly to local communities to keep the middle class afloat during AI-driven changes, potentially catalyzing further philanthropy and government action.

Continue reading “Andrew Yang: UBI Before UHI” | >
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