Ergothioneine biosynthesis: The present state and future prospect.

Ergothioneine (ERG), a rare natural thio-histidine derivative with potent antioxidant properties and diverse biological functions, is widely utilized in food processing, cosmetics, pharmaceuticals, and nutritional supplements. Current bioproduction methods for ERG primarily depend on fermenting edible mushrooms. However, with the advancement in synthetic biology, an increasing number of genetically engineered microbial hosts have been developed for ERG production, including , , and .

Personalized Multi-Epitope Nanovaccine Unlocks B Cell-Mediated Multiple Pathways of Antitumor Immunity.

B lymphocytes have emerged as an important immune-regulating target. Inoculation with tumor cell membrane-derived vaccines is a promising strategy to activate B cells, yet their efficiency is limited due to lack of costimulatory molecules. To amplify B cell responses against tumor, herein, a spatiotemporally-synchronized antigen-adjuvant integrated nanovaccine, termed as CM-CpG-aCD40, is constructed by conjugating the immune stimulative CpG oligonucleotide and the anti-CD40 antibody (aCD40) onto the membrane vesicles derived from triple negative breast cancer cells.

Entropy Manipulation of SrTiO Perovskite for Enhanced Thermoelectric and Mechanical Properties.

Reducing the thermal conductivity while maintaining excellent electrical transport properties is crucial for enhancing the thermoelectric performance of SrTiO-based perovskites. Here, we successfully achieved this goal through precisely manipulating the configurational entropy. A series of CaNdSr BaTiO ( = 0, 0.

Construction of a Convenient and Highly Sensitive Sensor for the Detection of Myo in Serum Based on ELI-SERS.

Acute myocardial infarction (AMI) is one of the most common causes of sudden death in cardiovascular disease, and myoglobin (Myo) is the first protein to be released in the blood after the attack, which is an important biomarker for clinical detection of AMI. The "Golden Rescue Time" for acute myocardial infarction is to intervene within the first 30 min after the attack; therefore, a rapid and accurate Myo detection method is needed urgently. In this study, we designed a combined enzyme-linked immunosorbent assay (ELISA) technique with surface-enhanced Raman scattering (SERS) immunoassay (ELI-SERS), which integrates the small sample volume, ease of operation, and excellent linearity of ELISA while utilizing the SERS technique and selecting the molecule with the Raman signal (IR-808), which is in resonance with the excitation wavelength, for further signal enhancement.

Hybrid SEM-ANN model for predicting undergraduates' e-learning continuance intention based on perceived educational and emotional support.

Based on the Expectation Confirmation Model (ECM), this study explores the impact of perceived educational and emotional support on university students' continuance intention to engage in e-learning. Researchers conducted a survey using structured questionnaires among 368 university students from three universities in Jiangxi Province. They measured their self-reported responses on six constructs: perceived educational support, perceived emotional support, perceived usefulness, confirmation, satisfaction, and continuance intention.

Combating tumor PARP inhibitor resistance: Combination treatments, nanotechnology, and other potential strategies.

PARP (poly (ADP-ribose) polymerase) inhibitors (PARPi) have demonstrated significant potential in cancer treatment, particularly in tumors with breast cancer susceptibility gene (BRCA) mutations and other DNA repair deficiencies. However, the development of resistance to PARPi has become a major challenge in their clinical application. The emergence of drug resistance leads to reduced efficacy of the PARPi over time, impacting long-term treatment outcomes and survival rates.

Engineering the orthogonal ubiquitin E1-E2 pairs for identification of K27 chain linkage substrates.

Ubiquitination is one kind of crucial protein post-translational modification (PTM) in eukaryotic cells, forming sorts of types of polyubiquitin chain linkages on the substrates. Ubiquitin conjugating enzymes (E2s) play an essential role in the formation of ubiquitin chains. However, the mechanism of the formation of atypical chain (such as K27) and the identification of the related substrates are not well understood.

Asymmetric Vinylogous Michael/Oxa-Michael Tandem Reaction between β,γ-Unsaturated Amides and Isatin-Derived β,γ-Unsaturated α-Ketoesters.

An organocatalytic asymmetric vinylogous Michael/oxa-Michael tandem reaction between β,γ-unsaturated pyrazoleamides and isatin-derived β,γ-unsaturated ketoesters has been developed with excellent regio-, diastereo-, and enantioselectivities. The methodology provides an effective approach to construct enantiomerically pure 3,4'-pyranyl spirooxindole derivatives containing three contiguous chiral centers. Moreover, the transformations of the chiral products, including the removal and reduction of the pyrazole group, have been investigated.

Concentrations of potentially toxic metals and trace elements in pregnant women and association with birth outcomes: A cross-sectional study in Malawi.

Potentially toxic metals and trace elements have been used in Malawi for a long time. However, data on exposure to these elements by susceptible groups like pregnant women and its associations with reproductive health outcomes in Malawi and southern hemisphere is limited. We investigated the concentrations of potentially toxic metals as well as trace elements in pregnant women and assessed the relationship between the levels these elements in maternal blood and sociodemographic factors, dietary habits and birth outcomes.

A 903-year annual temperature reconstruction for the southeastern tibetan plateau from the tree ring widths of Juniperus saltuaria.

Precisely dated paleoclimatic records are essential for understanding natural and anthropogenic climate influences. Here, an annually resolved absolutely dated Juniperus saltuaria tree ring width chronology from the Haizi mountain, southeastern Tibetan Plateau (TP) was developed. The chronology shows the annual- to decadal-scale paleoclimatic variability of the southeastern TP over the past 903 years (1115-2017 CE).

P2X4 receptor mediates macrophage infiltration leading to endometriotic cyst epithelium proliferation and hyperalgesia in mouse model.

Objective: To evaluate the effects of a P2X4 receptor (P2X4R)-specific antagonist on murine endometriotic-like lesions and human endometriotic stromal cells.

Design: Experimental study using an in vivo mouse endometriosis model and in vitro primary culture of human endometriotic stromal cells. NC-2600, an antagonist of the P2X4 ionotropic ATP receptor (P2X4R), was orally administered to the mice and cells.

Exposure to air pollution and cognitive function based on the minimum mental state examination: a systematic review and meta-analysis.

Evidence regarding the cognitive effects of air pollution is inconsistent. This study aimed to quantitatively analyze the relationship between air pollutants and cognitive abilities using the Mini-Mental State Examination (MMSE). We systematically searched for studies published until July 1, 2023, and assessed heterogeneity with Cochran's Q test and I² statistics, while publication bias was evaluated using Funnel plots and Egger's test.

Correlation between organizational support, self-efficacy, and core competencies among long-term care assistants: a structural equation model.

Introduction: Long-term care assistants are taking on more important roles in the healthcare system. The purpose of this study was to investigate what demographic factors influence the core competencies of nursing assistants, as well as to investigate the levels of organizational support, self-efficacy, and core competencies among nursing assistants in China, to explore the relationship between them.

Methods: This is a cross-sectional study with prospective data collection based on a self-report questionnaire.

Combined health effects of air pollutant mixtures on respiratory mortality using BKMR in Hangzhou, China.

Previous research on respiratory system mortality primarily focused on understanding their combined effects and have neglected the fact that air pollution mixtures are interrelated. This study used Bayesian kernel machine regression (BKMR) to analyze the relationship between air pollutant mixtures and respiratory mortality in Hangzhou, China from 2014 to 2018. The results showed a significant association between pollutant mixtures and respiratory system mortality primarily driven by PM and SO.

Unraveling the Mfn2-Warburg effect nexus: a therapeutic strategy to combat pulmonary arterial hypertension arising from catch-up growth after IUGR.

Background: The interplay between intrauterine and early postnatal environments has been associated with an increased risk of cardiovascular diseases in adulthood, including pulmonary arterial hypertension (PAH). While emerging evidence highlights the crucial role of mitochondrial pathology in PAH, the specific mechanisms driving fetal-originated PAH remain elusive.

Methods And Results: To elucidate the role of mitochondrial dynamics in the pathogenesis of fetal-originated PAH, we established a rat model of postnatal catch-up growth following intrauterine growth restriction (IUGR) to induce pulmonary arterial hypertension (PAH).

Information seeking and subsequent affective well-being in Chinese young adults: the mediating effects of worry.

Objective: This study aimed to unravel micro-processes that link information seeking to subsequent affective well-being (i.e., positive and negative affect) at the within-person level, as well as the role of worry as a mediator in this relationship.

FXN targeting induces cell death in ovarian cancer stem-like cells through PRDX3-Mediated oxidative stress.

Ovarian cancer stem cells (OCSCs) significantly impact the prognosis, chemoresistance, and treatment outcomes in OC. While ferroptosis has been proven effective against OCSCs, the intricate relationship between ferroptosis and OCSCs remains incompletely understood. Here, we enriched ovarian cancer stem-like cells (OCSLCs) through mammosphere culture, as an OCSC model.

Heterogeneous electro-Fenton removal of polyacrylamide in aqueous solution over CoFeO catalyst.

Polyacrylamide (PAM) in environmental water has become a major problem in water pollution management due to its high molecular mass, high viscosity and non-absorption by soil. CoFeO with strong magnetic properties was prepared by solvent-thermal synthesis method and used as the catalyst for the removal on PAM in heterogeneous Electro-Fenton (EF) system. It showed that the removal efficiency of PAM by the heterogeneous EF system using CoFeO catalyst was 92.