Publications by authors named "Yan Nan"

Janus particles, consisting of two or more chemically distinct composites within a single structural system, have attracted significant attention for their solid surfactant functionality, as well as their potential applications in micro/nanomotors and functional materials. Here, we present a simple and robust method to prepare plasmonic Janus particles consisting of a polystyrene-tethered gold nanorod (AuNRs@PS) head and a poly(4-vinylpyridine) (P4VP) head through emulsion confined assembly. The balance of the Janus particles can be finely tuned by adjusting the volume ratio of the AuNRs@PS solution and P4VP solution.

View Article and Find Full Text PDF

Fluoride is an essential trace element for human. Adequate levels of fluoride are crucial for maintaining skeletal growth, but excessive fluoride exposure entering the body can cause renal damage, including damaged renal tubules and impaired renal function. However, the mechanism on fluoride-induced kidney injury remains unclear.

View Article and Find Full Text PDF

Understanding tumor cell heterogeneity and plasticity is crucial for overcoming drug resistance. Single-cell technologies enable analyzing cell states at a given condition, but catenating static cell snapshots to characterize dynamic drug responses remains challenging. Here, we propose scStateDynamics, an algorithm to infer tumor cell state dynamics and identify common drug effects by modeling single-cell level gene expression changes.

View Article and Find Full Text PDF

The STING pathway plays a critical role in tumor immunosurveillance. However, the precise mechanisms by which STING regulates gamma delta (γδ) T cell function during tumor progression remain unclear. Herein, we find that tumor-derived cyclic GMP-AMP (cGAMP) activates a distinct STING pathway by inducing TBK1-mediated phosphorylation of Eomes in γδ T cells during the early stage of tumor development is demonstrated.

View Article and Find Full Text PDF
Article Synopsis
  • * Over 5,500 serum and nearly 600 cerebrospinal fluid samples were collected for analysis between 2022 and 2024, revealing low overall PRV infection rates but sporadic outbreaks with higher positivity.
  • * Two distinct PRV strains were identified through PCR analysis, with one strain showing similarities to the vaccine strain and the other aligning with classical Chinese strains, underscoring the need for better surveillance and control in the pig industry.
View Article and Find Full Text PDF

Hybrid heterostructure materials have received considerable attention due to the integration of each component and abundant functional applications in micromotors, catalysis, photothermal therapy, drug delivery, and bioimaging. However, the preparation of organic/inorganic heterostructure nanoparticles (HSNPs) with high quality still remains a remarkable challenge since thermodynamically metastable structures usually coexist, resulting in a lack of organic scaffolds with extreme uniformity both in shape and size distribution. Here, we prepared polystyrene--poly(4-vinylpyridine) (PS--P4VP) block copolymer (BCP) core-shell spherical colloids driven by interfacial instability of soft and deformable emulsion droplets.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers have developed ring-like hierarchical superstructures using polystyrene-tethered gold nanoparticles, focusing on their structural symmetry and unique properties.
  • The separation between adjacent nanoparticles in these structures can be adjusted by altering the molecular weight of the tethered polystyrene ligands, while the overall thickness is influenced by the concentration of the nanoparticles.
  • This method is versatile and can create various ring-like superstructures with different types of inorganic nanoparticles, suggesting potential applications in fields like surface-enhanced Raman scattering, optoelectronics, and sensor technology.
View Article and Find Full Text PDF
Article Synopsis
  • - The study investigates how sodium butyrate may protect against liver damage caused by excessive fluoride exposure, focusing on its effects on liver inflammation and the NLRP3 inflammasome.
  • - Mice were divided into four groups to assess the impact of sodium fluoride and sodium butyrate over three months, using various methods to analyze liver inflammation and injury.
  • - Results showed that fluoride exposure resulted in chronic inflammation and oxidative stress in the liver, while sodium butyrate treatment reduced these damaging effects and lowered inflammatory markers.
View Article and Find Full Text PDF

Lactate is a critical regulatory factor secreted by tumors, influencing tumor development, metastasis, and clinical prognosis. Precise analysis of tumor-cell-secreted lactate is pivotal for early cancer diagnosis. This study describes a paper-based microfluidic chip to enable the detection of lactate levels secreted externally by living cells.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigated the link between dominant follicle proportions (DFPs) and IVF/ICSI outcomes for patients in POSEIDON Groups 3 and 4 undergoing GnRH-ant protocols.
  • A total of 1,156 patients were analyzed, categorized by DFPs based on the ratio of larger to smaller follicles on the trigger day, and various statistical methods were used to evaluate results.
  • Findings revealed that a DFP greater than 40% negatively impacted oocyte retrieval, embryo development, and clinical pregnancy rates in Group 3, suggesting a lower DFP threshold could improve outcomes, whereas Group 4 showed no significant differences in cumulative pregnancy rates between DFP categories.
View Article and Find Full Text PDF
Article Synopsis
  • The electron extraction at the perovskite/C interface is vital for enhancing the efficiency of inverted perovskite solar cells (PSCs).
  • A novel fullerene derivative, C-TMA, functions as an interfacial layer, improving electron extraction by passivating surface defects and facilitating electron transfer.
  • The use of C-TMA also promotes larger grain growth and better crystallinity in the perovskite film, resulting in a significant increase in power conversion efficiency (24.89%) and excellent thermal stability after long exposure to heat.
View Article and Find Full Text PDF
Article Synopsis
  • - Vision is crucial for animal survival, and different vertebrate species have evolved their visual systems based on their environments and habitats.
  • - The giant panda has a unique vertically oriented visual streak and forward-facing eyes, indicating it has a specially adapted binocular visual system.
  • - Mathematical simulations support the idea that the panda processes visual information differently, which could help us understand its visual adaptation and evolution as a distinct species.
View Article and Find Full Text PDF

The cytoplasmic peptide:N-glycanase (NGLY1) is ubiquitously expressed and functions as a de-N-glycosylating enzyme that degrades misfolded N-glycosylated proteins. NGLY1 deficiency due to biallelic loss-of-function NGLY1 variants is an ultrarare autosomal recessive deglycosylation disorder with multisystemic involvement; the neurological manifestations represent the main disease burden. Currently, there is no treatment for this disease.

View Article and Find Full Text PDF

The OAS-RNase L pathway is one of the oldest innate RNA sensing pathways that leads to interferon (IFN) signaling and cell death. OAS recognizes viral RNA and then activates RNase L, which subsequently cleaves both cellular and viral RNA, creating "processed RNA" as an endogenous ligand that further triggers RIG-I-like receptor signaling. However, the IFN response and antiviral activity of the OAS-RNase L pathway are weak compared to other RNA-sensing pathways.

View Article and Find Full Text PDF

Results of measurable residual disease (MRD)-testing by next-generation sequencing (NGS) correlate with relapse risk in adults with B-cell acute lymphoblastic leukemia (ALL) receiving chemotherapy or an allotransplant from a human leukocyte antigen (HLA)-identical relative or HLA-matched unrelated donor. We studied cumulative incidence of relapse (CIR) and survival prediction accuracy using a NGS-based MRD-assay targeting immunoglobulin genes after 2 courses of consolidation chemotherapy cycles in 93 adults with B-cell ALL most receiving HLA-haplotype-matched related transplants. Prediction accuracy was compared with MRD-testing using multi-parameter flow cytometry (MPFC).

View Article and Find Full Text PDF

Background: Since the end of 2022, Azvudine was widely used to treat hospitalized coronavirus disease 2019 (COVID-19) patients in China. However, data on the real-world effectiveness of Azvudine against severe outcomes and post-COVID-19-conditions (PCC) among patients infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variants was limited. This study evaluates the effectiveness of Azvudine in hospitalized COVID-19 patients during a SARS-CoV-2 Omicron BA.

View Article and Find Full Text PDF

Background: Hypoxic-ischemic encephalopathy (HIE) is caused by perinatal hypoxia and subsequent reductions in cerebral blood flow and is one of the leading causes of severe disability or death in newborns. Despite its prevalence, we currently lack an effective drug therapy to combat HIE. Celastrol (Cel) is a pentacyclic triterpene extracted from Tripterygium Wilfordi that can protect against oxidative stress, inflammation, and cancer.

View Article and Find Full Text PDF

The innate immune system uses a distinct set of germline-encoded pattern recognition receptors to recognize molecular patterns initially thought to be unique to microbial invaders, named pathogen-associated molecular patterns. The concept was later further developed to include similar molecular patterns originating from host cells during tissue damage, known as damage-associated molecular patterns. However, recent advances in the mechanism of monogenic inflammatory diseases have highlighted a much more expansive repertoire of cellular functions that are monitored by innate immunity.

View Article and Find Full Text PDF

Gold nanoclusters exhibiting concomitant photothermy (PT) and photoluminescence (PL) under near-infrared (NIR) light irradiation are rarely reported, and some fundamental issues remain unresolved for such materials. Herein, we concurrently synthesized two novel rod-shaped Au nanoclusters, Au(PET) and Au(PET) (PET = 2-phenylethanethiolate), and precisely revealed that their kernels were 4 × 4 × 6 and 5 × 4 × 6 face-centered cubic (fcc) structures, respectively, based on the numbers of Au layers in the [100], [010], and [001] directions. Following the structural growth mode from Au(PET) to Au(PET), we predicted six more novel nanoclusters.

View Article and Find Full Text PDF

It is a crucial role for enhancing the power conversion efficiency (PCE) of perovskite solar cells (PSCs) to prepare high-quality perovskite films, which can be achieved by delaying the crystallization of perovskite film. Hence, we designed difluoroacetic anhydride (DFA) as an additive to regulating crystallization process thus reducing defect formation during perovskite film formation. It was found DFA reacts with DMSO by forming two molecules, difluoroacetate thioether ester (DTE) and difluoroacetic acid (DA).

View Article and Find Full Text PDF

Petroleum hydrocarbons are a stubborn pollutant that is difficult to degrade globally, and plant-microbial degradation is the main way to solve this type of pollutant. In this study, the physiological and ecological responses of alfalfa to petroleum hydrocarbons in different concentrations of petroleum hydrocarbon-contaminated soil with KB1 (Rhodococcus erythropolis) were analyzed and determined by laboratory potting techniques. The growth of alfalfa (CK) and alfalfa with KB1 (JZ) in different concentrations of petroleum hydrocarbons contaminated soil was compared and analyzed.

View Article and Find Full Text PDF

Functional agents are verified to efficiently enhance device performance of perovskite solar cells (PSCs) through surface engineering. However, the influence of intrinsic characteristics of molecules on final device performance is overlooked. Here, a surface reconstruction strategy is developed to enhance the efficiency of inverted PSCs by mitigating the adverse effects of lead chelation (LC) molecules.

View Article and Find Full Text PDF
Article Synopsis
  • * The proposed method establishes an intermediate domain and uses two rounds of feature alignment through adversarial learning to bridge the gap between domains, improving detection accuracy for pedestrians.
  • * Experimental results on various datasets indicate significant improvements over typical models, with metrics showing lower misclassification rates in cross-domain scenarios, validating the effectiveness of the proposed approach.
View Article and Find Full Text PDF