keyword
https://read.qxmd.com/read/38473208/molecular-metabolic-and-subcellular-mapping-of-the-tumor-immune-microenvironment-via-3d-targeted-and-non-targeted-multiplex-multi-omics-analyses
#21
JOURNAL ARTICLE
Sammy Ferri-Borgogno, Jared K Burks, Erin H Seeley, Trevor D McKee, Danielle L Stolley, Akshay V Basi, Javier A Gomez, Basant T Gamal, Shamini Ayyadhury, Barrett C Lawson, Melinda S Yates, Michael J Birrer, Karen H Lu, Samuel C Mok
Most platforms used for the molecular reconstruction of the tumor-immune microenvironment (TIME) of a solid tumor fail to explore the spatial context of the three-dimensional (3D) space of the tumor at a single-cell resolution, and thus lack information about cell-cell or cell-extracellular matrix (ECM) interactions. To address this issue, a pipeline which integrated multiplex spatially resolved multi-omics platforms was developed to identify crosstalk signaling networks among various cell types and the ECM in the 3D TIME of two FFPE (formalin-fixed paraffin embedded) gynecologic tumor samples...
February 20, 2024: Cancers
https://read.qxmd.com/read/38467115/facing-the-unknown-an-inductive-analysis-of-the-lived-experience-of-medical-residents-during-the-covid-19-pandemic
#22
JOURNAL ARTICLE
Flávio Guimarães-Fernandes, Laelia Benoit, Luiza Magalhães de Oliveira, Paulo Chenaud Neto, Débora Chou Feniman, Aline Villalobo Correia, Nathaly de Oliveira Bosoni, Daniela Medina Macaya, Euripedes Constantino Miguel, Daniela Ceron-Litvoc, Gustavo Bonini Castellana
INTRODUCTION: The COVID-19 pandemic had significant repercussions for the everyday life and public health of society. Healthcare professionals were particularly vulnerable. Here, we interviewed medical residents about their lived experiences during the pandemic to offer a phenomenological analysis. To this end, we discuss their pandemic experiences considering Jaspers' "limit situation" concept - that is, a radical shift from their everyday experiences, to one causing them to question the basis of their very existence...
March 11, 2024: Psychopathology
https://read.qxmd.com/read/38464497/ai-energized-hydrogel-design-optimization-and-application-in-biomedicine
#23
REVIEW
Zuhao Li, Peiran Song, Guangfeng Li, Yafei Han, Xiaoxiang Ren, Long Bai, Jiacan Su
Traditional hydrogel design and optimization methods usually rely on repeated experiments, which is time-consuming and expensive, resulting in a slow-moving of advanced hydrogel development. With the rapid development of artificial intelligence (AI) technology and increasing material data, AI-energized design and optimization of hydrogels for biomedical applications has emerged as a revolutionary breakthrough in materials science. This review begins by outlining the history of AI and the potential advantages of using AI in the design and optimization of hydrogels, such as prediction and optimization of properties, multi-attribute optimization, high-throughput screening, automated material discovery, optimizing experimental design, and etc ...
April 2024: Materials today. Bio
https://read.qxmd.com/read/38463882/current-perspectives-on-the-regulatory-mechanisms-of-sucrose-accumulation-in-sugarcane
#24
REVIEW
Faisal Mehdi, Saddia Galani, Kamal Priyananda Wickramasinghe, Peifang Zhao, Xin Lu, Xiuqin Lin, Chaohua Xu, Hongbo Liu, Xujuan Li, Xinlong Liu
Sugars transported from leaves (source) to stems (sink) energize cell growth, elongation, and maintenance. which are regulated by a variety of genes. This review reflects progress and prospects in the regulatory mechanism for maximum sucrose accumulation, including the role of sucrose metabolizing enzymes, sugar transporters and the elucidation of post-transcriptional control of sucrose-induced regulation of translation (SIRT) in the accumulation of sucrose. The current review suggests that SIRT is emerging as a significant mechanism controlling Scbzip44 activities in response to endogenous sugar signals (via the negative feedback mechanism)...
March 15, 2024: Heliyon
https://read.qxmd.com/read/38462065/arousal-gray-s-theory-of-anxiety-and-the-etiology-of-psychopathy
#25
REVIEW
Don C Fowles
This paper focuses on Jeffrey Gray's theory of anxiety from the perspective of Fowles' (1980) application of his work to theories of arousal, psychophysiology, and the etiology of psychopathy. Although highly influential, the concept of general arousal failed to find support in terms of between-individuals assessment with multiple physiological measures. Gray's constructs of a behavioral inhibition system (BIS) that mediates anxiety, a behavioral approach or activation system (BAS) that energizes behavior to approach rewards, and a nonspecific arousal system that energized behavior captured aspects of arousal...
March 8, 2024: Biological Psychology
https://read.qxmd.com/read/38459853/the-rejuvenation-and-functional-restoration-of-aged-adipose-stem-cells-by-duxap10-knockdown-via-the-regulation-of-the-mir-214-3p-rassf5-axis
#26
JOURNAL ARTICLE
Sen Ren, Chengcheng Li, Hewei Xiong, Qian Wu, Xiaohui Wu, Zhongwei Xiong, Lixing Dong, Bing Shu, Wei Wei, Chao Ma, Xiang Li, Jincao Chen
Adipose stem cell (ASC)-based therapies provide an encouraging option for tissue repair and regeneration. However, the function of these cells declines with aging, which limits their clinical transformation. Recent studies have outlined the involvement of long non-coding RNAs in stem cell aging. Here, we reanalyzed our published RNA sequencing (RNA-seq) data profiling differences between ASCs from young and old donors and identified a lncRNA named double homeobox A pseudogene 10 (DUXAP10) as significantly accumulated in aged ASCs...
March 9, 2024: Stem Cells Translational Medicine
https://read.qxmd.com/read/38458573/exploring-the-role-of-the-lkabcg36-transporter-in-lignin-accumulation
#27
JOURNAL ARTICLE
Nan Sun, Yuqian Wang, Jiaqi Kang, Haifei Hao, Xiao Liu, Yongqing Yang, Xiangning Jiang, Ying Gai
Lignin is a complex biopolymer formed through the condensation of three monomeric precursors known as monolignols. However, the mechanism underlying lignin precursor transport remains elusive, with uncertainty over whether it occurs through passive diffusion or an active energized process. ATP-binding cassette 36 (ABCG36) plays important roles in abiotic stress resistance. In this study, we investigated the transport functions of LkABCG36 (Larix kaempferi) for lignin precursors and the potential effects of LkABCG36 overexpression in plants...
March 6, 2024: Plant Science: An International Journal of Experimental Plant Biology
https://read.qxmd.com/read/38453910/trem2-deficiency-impairs-the-energy-metabolism-of-schwann-cells-and-exacerbates-peripheral-neurological-deficits
#28
JOURNAL ARTICLE
Nannan Zhang, Qingjie Ji, Yunfeng Chen, Xiwu Wen, Fangzhen Shan
Triggering receptor expressed on myeloid cells-2 (TREM2) has been implicated in susceptibility to neurodegenerative disease. Schwann cells (SCs), the predominant glial cell type in the peripheral nervous system (PNS), play a crucial role in myelination, providing trophic support for neurons and nerve regeneration. However, the function of TREM2 in SCs has not been fully elucidated. Here, we found that TREM2 is expressed in SCs but not in neurons in the PNS. TREM2 deficiency leads to disruption of glycolytic flux and oxidative metabolism in SCs, impairing cell proliferation...
March 7, 2024: Cell Death & Disease
https://read.qxmd.com/read/38440841/plasmon-induced-hot-carrier-distribution-in-a-composite-nanosystem-role-of-the-adsorption-site
#29
JOURNAL ARTICLE
Mufasila Mumthaz Muhammed, Junais Habeeb Mokkath
The generation of hot carriers (HCs) through the excitation of localized surface plasmon resonance (LSPR) in metal nanostructures is a fascinating phenomenon that fuels both fundamental and applied research. However, gaining insights into HCs at a microscopic level has posed a complex challenge, limiting our ability to create efficient nanoantennas that utilize these energized carriers. In this investigation, we employ real-time time-dependent density functional theory (rt-TDDFT) calculations to examine the creation and distribution of HCs within a model composite system consisting of a silver (Ag) nanodisk and a carbon monoxide (CO) molecule...
March 5, 2024: Physical Chemistry Chemical Physics: PCCP
https://read.qxmd.com/read/38421713/nkt-licensed-in-vivo-dendritic-cell-based-immunotherapy-as-cellular-immunodrugs-for-cancer-treatment
#30
JOURNAL ARTICLE
Shin-Ichiro Fujii, Kanako Shimizu
With the advent of new therapies, immunotherapy has gained attention as a critical modality. After the discovery of the natural killer T (NKT) cells ligand, ex vivo cultured dendritic cells (DCs) loaded with NKT ligand (especially α-galactosylceramide (α-GalCer) (DC/Gal) or ex vivo expanded NKT transfer studies were clinically examined in several institutes. To prevent tumoral immune escape, the link between innate and adaptive immunity, in situ selective targeting of DCs has been attempted; however, protocol optimization was required...
2024: Critical Reviews in Oncogenesis
https://read.qxmd.com/read/38418916/ion-and-lipid-orchestration-of-secondary-active-transport
#31
REVIEW
David Drew, Olga Boudker
Transporting small molecules across cell membranes is an essential process in cell physiology. Many structurally diverse, secondary active transporters harness transmembrane electrochemical gradients of ions to power the uptake or efflux of nutrients, signalling molecules, drugs and other ions across cell membranes. Transporters reside in lipid bilayers on the interface between two aqueous compartments, where they are energized and regulated by symported, antiported and allosteric ions on both sides of the membrane and the membrane bilayer itself...
February 2024: Nature
https://read.qxmd.com/read/38400279/field-programmable-gate-array-based-smart-switch-to-avoid-inrush-current-in-pv-installations
#32
JOURNAL ARTICLE
Gerardo de J Martínez-Figueroa, Felipe Córcoles, Santiago Bogarra
This paper introduces an FPGA-based implementation of a smart switch designed to avoid inrush currents occurring during the connection of single-phase transformers utilized in grid-connected photovoltaic (PV) systems. The magnitude of inrush currents is notably impacted by the residual flux within the transformer core and the precise moment of energization relative to the wave cycle. Alternative methods frequently hinge on intricate procedures to estimate residual flux. This challenge is adeptly circumvented by the innovative smart control system proposed herein, rendering it a cost-effective solution for grid-connected PV systems...
February 8, 2024: Sensors
https://read.qxmd.com/read/38397087/the-structure-of-the-cardiac-mitochondria-respirasome-is-adapted-for-the-%C3%AE-oxidation-of-fatty-acids
#33
REVIEW
Alexander V Panov
It is well known that in the heart and kidney mitochondria, more than 95% of ATP production is supported by the β-oxidation of long-chain fatty acids. However, the β-oxidation of fatty acids by mitochondria has been studied much less than the substrates formed during the catabolism of carbohydrates and amino acids. In the last few decades, several discoveries have been made that are directly related to fatty acid oxidation. In this review, we made an attempt to re-evaluate the β-oxidation of long-chain fatty acids from the perspectives of new discoveries...
February 18, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38394242/il-27-regulates-the-differentiation-of-follicular-helper-nkt-cells-via-metabolic-adaptation-of-mitochondria
#34
JOURNAL ARTICLE
Yasuhiro Kamii, Koji Hayashizaki, Toshio Kanno, Akio Chiba, Taku Ikegami, Mitsuru Saito, Yukihiro Akeda, Toshiaki Ohteki, Masato Kubo, Kiyotsugu Yoshida, Kazuyoshi Kawakami, Kazunori Oishi, Jun Araya, Kazuyoshi Kuwano, Mitchell Kronenberg, Yusuke Endo, Yuki Kinjo
Invariant natural killer T (iNKT) cells are innate-like T lymphocytes that express an invariant T cell receptor α chain and contribute to bridging innate and acquired immunity with rapid production of large amounts of cytokines after stimulation. Among effecter subsets of iNKT cells, follicular helper NKT (NKTFH ) cells are specialized to help B cells. However, the mechanisms of NKTFH cell differentiation remain to be elucidated. In this report, we studied the mechanism of NKTFH cell differentiation induced by pneumococcal surface protein A and α-galactosylceramide (P/A) vaccination...
February 27, 2024: Proceedings of the National Academy of Sciences of the United States of America
https://read.qxmd.com/read/38366454/high-energy-acceleration-phenomena-in-extreme-radiation-plasma-interactions
#35
JOURNAL ARTICLE
J C Faure, D Tordeux, L Gremillet, M Lemoine
We simulate, using a particle-in-cell code, the chain of acceleration processes at work during the Compton-based interaction of a dilute electron-ion plasma with an extreme-intensity, incoherent γ-ray flux with a photon density several orders of magnitude above the particle density. The plasma electrons are initially accelerated in the radiative flux direction through Compton scattering. In turn, the charge-separation field from the induced current drives forward the plasma ions to near-relativistic speed and accelerates backwards the nonscattered electrons to energies easily exceeding those of the driving photons...
January 2024: Physical Review. E
https://read.qxmd.com/read/38358282/unravelling-hetc-as-a-peptidase-based-abc-exporter-driving-functional-cell-differentiation-in-the-cyanobacterium-nostoc-pcc-7120
#36
JOURNAL ARTICLE
Raphaël Rachedi, Véronique Risoul, Maryline Foglino, Yanis Aoudache, Kevin Lang, Stéphanie Champ, Elise Kaplan, Cédric Orelle, Badreddine Douzi, Jean-Michel Jault, Amel Latifi
The export of peptides or proteins is essential for a variety of important functions in bacteria. Among the diverse protein-translocation systems, peptidase-containing ABC transporters (PCAT) are involved in the maturation and export of quorum-sensing or antimicrobial peptides in Gram-positive bacteria and of toxins in Gram-negative organisms. In the multicellular and diazotrophic cyanobacterium Nostoc PCC 7120, the protein HetC is essential for the differentiation of functional heterocysts, which are micro-oxic and non-dividing cells specialized in atmospheric nitrogen fixation...
February 15, 2024: Microbiology Spectrum
https://read.qxmd.com/read/38340959/microbe-derived-antioxidants-enhance-lipid-synthesis-by-regulating-ampk%C3%AE-srebp1c-pathway-in-liver-of-weanling-piglets
#37
JOURNAL ARTICLE
Chengbing Yu, Di Wang, Cheng Shen, Zhen Luo, Hongcai Zhang, Jing Zhang, Weina Xu, Jianxiong Xu
BACKGROUND: Weaning usually causes low feed intake and weight loss in piglets, which mobilizes lipid to energize. The microbe-derived antioxidants (MA) exhibit great potential in anti-oxidation, anti-inflammation and metabolic regulation. OBJECTIVE: To investigate the changes of lipid metabolism postweaning and effects of MA on growth performance and hepatic lipid metabolism in weanling piglets. METHODS: In the first experiment, piglets weaned at 21 days old were slaughtered on weaning day (d0), 4 (d4) and 14 (d14) days postweaning (6 piglets per day)...
February 8, 2024: Journal of Nutrition
https://read.qxmd.com/read/38313360/chemical-and-biological-engineering-strategies-to-make-and-modify-next-generation-hydrogel-biomaterials
#38
JOURNAL ARTICLE
Ryan Gharios, Ryan M Francis, Cole A DeForest
There is a growing interest in the development of technologies to probe and direct in vitro cellular function for fundamental organoid and stem cell biology, functional tissue and metabolic engineering, and biotherapeutic formulation. Recapitulating many critical aspects of the native cellular niche, hydrogel biomaterials have proven to be a defining platform technology in this space, catapulting biological investigation from traditional two-dimensional (2D) culture into the 3D world. Seeking to better emulate the dynamic heterogeneity characteristic of all living tissues, global efforts over the last several years have centered around upgrading hydrogel design from relatively simple and static architectures into stimuli-responsive and spatiotemporally evolvable niches...
December 6, 2023: Matter
https://read.qxmd.com/read/38306747/magnetically-actuated-pandanus-fruit-like-nanorobots-for-enhanced-ph-stimulated-drug-release-and-targeted-biofilm-elimination-in-wound-healing
#39
JOURNAL ARTICLE
Zixin Zhu, Chenjun Huang, Laiyi Liu, Jiayi Wang, Xue Gou
Conventional antibiotic treatment struggles to eliminate biofilms in wounds due to the formation compact barrier. Herein, we fabricate magnetic pandanus fruit-like nanorobots (NRs) that function as drug carriers while exhibit excellent maneuverability for enhanced antibacterial tasks. Specifically, zeolitic imidazolate framework-8 (ZIF-8) is self-assembled on the surface of Fe3 O4 nanoparticles, loaded with a small quantity of ciprofloxacin, and covered with a layer of polydopamine (PDA). Energized by external magnetic fields, the NRs (F@Z/C/P) are steered in defined direction to penetrate the infection tissues, and effectively arrive targeted areas for pH stimulated drug release and near-infrared triggered phototherapy, contributing to an antibacterial rate of >99...
February 1, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38302971/mechanosensitive-channel-of-large-conductance-enhances-the-mechanical-stretching-induced-upregulation-of-glycolysis-and-oxidative-metabolism-in-schwann-cells
#40
JOURNAL ARTICLE
Fangzhen Shan, Nannan Zhang, Xiaoying Yao, Yi Li, Zihao Wang, Chuanji Zhang, Yuzhong Wang
BACKGROUND: Physical exercise directly stretching the peripheral nerve promotes nerve regeneration; however, its action mechanism remains elusive. Our present study aimed to investigate the effects of mechanosensitive channel of large conductance (MscL) activated by mechanical stretching on the cultured Schwann cells (SCs) and explore the possible mechanism. METHODS: Primary SCs from neonatal mice at 3-5 days of age were derived and transfected with the lentivirus vector expressing a mutant version of MscL, MscL-G22S...
February 1, 2024: Cell Communication and Signaling: CCS
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