Publications by authors named "Changyun Li"

Protein arginine methyltransferase 7 (PRMT7), a type III methyltransferase responsible solely for arginine mono-methylation, plays a critical role in numerous physiological and pathological processes. Recent studies have highlighted its aberrant expression or mutation in various cancers, implicating it in tumorigenesis, cancer progression, and drug resistance. Consequently, PRMT7 has emerged as a promising target for cancer diagnosis and therapeutic intervention.

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  • * Virtual screening of over 100,000 compounds identified 12 potential inhibitors, with compound 4 showing the most promise in blocking KDM7A's activity, leading to reduced breast cancer stem cells and cell cycle arrest.
  • * The research also highlights MKRN1 as a significant gene influenced by KDM7A, further revealing the potential of compound 4 as an effective treatment option for both drug-resistant and sensitive triple-negative breast cancer.
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Triple-negative breast cancer (TNBC) is a subtype of breast cancer with high mortality and drug resistance and no targeted drug available at present. Compound , a staurosporine alkaloid derived from sp. NBU3142 in a marine sponge, exhibits potent anti-TNBC activity.

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Sleep position recognition plays a crucial role in enhancing individual sleep quality and addressing sleep-related disorders. However, the conventional non-invasive technology for recognizing sleep positions tends to be limited in its widespread application due to high production and computing costs. To address this issue, an enhanced stacking model is proposed based on a specific air bag mattress.

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As a prototypical aggregation-induced emission luminogen (AIEgen), the tetraphenylethene (TPE) moiety has been judiciously modified as organic linkers for constructing various functional metal-organic frameworks (MOFs). However, these AIEgen-based MOFs have rarely received research attention in photocatalytic applications due to their limited stability in harsh reaction conditions. In this work, we report a robust Ni-pyrazolate-based MOF (denoted as TPE4Pz-Ni) under the guidance of reticular chemistry, which is assembled by an AIE-active tetratopic linker of 1,1,2,2-tetrakis(4-(1-pyrazol-4-yl)phenyl)ethane (H-TPE4Pz) with a 12-connected Ni-cluster of [Ni(OH)(HO)Pz] (Pz = pyrazolate) in a (4,12)-connected -a topological network.

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Jumonji domain-containing protein D3 (JMJD3) is a 2-oxoglutarate-dependent dioxygenase that specifically removes transcriptional repression marks di- and tri-methylated groups from lysine 27 on histone 3 (H3K27me2/3). The erasure of these marks leads to the activation of some associated genes, thereby influencing various biological processes, such as development, differentiation, and immune response. However, comprehensive descriptions regarding the relationship between JMJD3 and inflammation are lacking.

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  • Ubiquitin-Conjugating Enzyme 5 (UBC5) is being studied as a potential target for therapies related to various diseases, particularly cancers, due to its key roles in processes like apoptosis and DNA repair.
  • Research on UBC5 has been slower compared to other ubiquitin-coupled enzymes, yet it's shown to be crucial in ubiquitinating proteins linked to disease and cellular homeostasis.
  • Recent insights into the similarities between UBC5 and its homologues (UBC1 and UBC4) are improving our understanding of how UBC5 functions in protein degradation and cellular regulation, highlighting its importance in disease treatment strategies.
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  • - Licorice, specifically the Glycyrrhiza genus, has a long history of medicinal use, with its active component Glycyrrhizin (GLY) recognized for various health benefits, including anti-inflammatory and antibacterial properties.
  • - Current research focuses on GLY's antiviral effects, but it also shows substantial antibacterial activity by inhibiting bacterial growth and enhancing host immune responses, which may help combat bacterial infections.
  • - The paper reviews GLY's mechanisms against pathogenic bacteria, its role in immune regulation, and suggests that combining it with other antibiotics could improve treatment for drug-resistant bacteria, supported by extensive research from various scientific databases.
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  • * USP36 removes ubiquitin chains from proteins, which leads to their degradation through the proteasome, and its functions are linked to various health issues like cancer, infections, and inflammation.
  • * This review aims to summarize current research on USP36's roles in diseases, enhancing our understanding of the underlying mechanisms and highlighting potential targets for therapeutic intervention.
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Breast cancer (BC) is the most frequent malignant cancer diagnosis and is a primary factor for cancer deaths in women. The clinical subtypes of BC include estrogen receptor (ER) positive, progesterone receptor (PR) positive, human epidermal growth factor receptor 2 (HER2) positive, and triple-negative BC (TNBC). Based on the stages and subtypes of BC, various treatment methods are available with variations in the rates of progression-free disease and overall survival of patients.

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  • - USP21, a member of the Ubiquitin-specific peptidases (USPs), plays a critical role in various cellular processes like apoptosis and DNA repair, but research on it has been slow.
  • - Over the past decade, studies have shown that USP21 helps remove ubiquitin from key proteins that affect cell functions related to diseases, especially various cancers.
  • - The review highlights USP21's structure and its involvement in cancer development, along with promising advancements in small-molecule inhibitors aimed at targeting USP21 for potential cancer treatments.
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  • RNA-binding proteins (RBPs), like CELF1, are crucial in managing RNA processes such as splicing and translation, influencing both normal and disease states in the body.
  • CELF1 specifically interacts with GU-rich elements in mRNA and is linked to the development of various malignant diseases, suggesting it could be a promising target for treatment.
  • The text discusses CELF1's structure, function, regulatory mechanisms, and the challenges in studying its role, emphasizing the importance of developing targeted therapies that involve CELF1.
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Aims: Qipian® is a commercialized agent composed of extracts of three genera of commensal bacteria, and its mechanism of action on asthma is unclear. This study aimed to examine the impact of Qipian® on airway inflammation and investigate the underlying mechanisms.

Materials And Methods: Qipian® or dexamethasone (DEX) was administered before OVA challenge in an ovalbumin-induced asthma mouse model, and then asthmatic symptoms were observed and scored.

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Currently, the research on the predictions of remaining useful life (RUL) of rotating machinery mainly focuses on the process of health indicator (HI) construction and the determination of the first prediction time (FPT). In complex industrial environments, the influence of environmental factors such as noise may affect the accuracy of RUL predictions. Accurately estimating the remaining useful life of bearings plays a vital role in reducing costly unscheduled maintenance and increasing machine reliability.

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Histone demethylation is a kind of epigenetic modification mediated by a variety of enzymes and participates in regulating multiple physiological and pathological events. Lysine-specific demethylase 7A is a kind of α-ketoglutarate- and Fe(II)-dependent demethylase belonging to the PHF2/8 subfamily of the JmjC demethylases. KDM7A is mainly localized in the nucleus and contributes to transcriptional activation via removing mono- and di-methyl groups from the lysine residues 9 and 27 of Histone H3.

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Lysine-specific demethylase 4 A (KDM4A, also named JMJD2A, KIA0677, or JHDM3A) is a demethylase that can remove methyl groups from histones H3K9me2/3, H3K36me2/3, and H1.4K26me2/me3. Accumulating evidence suggests that KDM4A is not only involved in body homeostasis (such as cell proliferation, migration and differentiation, and tissue development) but also associated with multiple human diseases, especially cancers.

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  • Leukocyte cell-derived chemotaxin-2 (LECT2) is a multifunctional protein involved in immune processes and diseases, initially known for its role in neutrophil migration.
  • It interacts with various cell surface receptors, and misfolding of LECT2 can lead to amyloidosis in critical organs like the kidneys and lungs, though the exact mechanisms are not completely understood.
  • This review summarizes the structure, dual functions, and signaling pathways of LECT2, aiming to enhance drug development for treating immune-related diseases.
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  • * KDM6A can remove methyl groups from specific histone marks (H3K27me1/2/3) and its activity is tied to tumor development, making it a potential target for cancer treatment.
  • * This text summarizes KDM6A's structure, functions in both cancer and non-cancer contexts, its inhibitors, research challenges, and possible solutions, aiming to enhance our understanding and therapeutic targeting of this enzyme in cancer.
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The time-series data generated by turbofan engines has a great degree of complexity and dynamics. At present, recurrent neural networks are commonly used to model and forecast the remaining useful life (RUL). The relationship of the sample data is not taken into account, and there are issues such as gradient explosion.

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Closed-cell metal syntactic foam is a new material consisting of hollow spheres embedded in metal matrix syntactic foams. These foams have good physical and mechanical properties and are increasingly used worldwide in industrial and high-tech fields. Magnesium matrix syntactic foams containing hollow AlO spheres ((AlO)/AZ91D) were successfully fabricated by hot press sintering at different temperatures.

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  • Breast cancer is a prevalent disease, especially among women, and has become the most commonly diagnosed cancer since 2020.
  • Berberine (BBR), a natural compound with various health benefits, has shown promise as a safe and effective treatment for breast cancer through its anticancer properties.
  • This review outlines the sources and functions of BBR, explores its mechanisms against breast cancer, discusses new therapeutic strategies to enhance its effectiveness, and suggests future research areas.
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Perfluorinated isobutyronitrile (CFN) is favored in electrical engineering because it is an environmentally friendly gas-insulating medium with a low greenhouse effect. Unfortunately, under the influence of electricity and over-heating, its decomposition results in the deterioration of its insulating properties, which potentially leads to partial discharge or even gas breakdown. In this paper, the adsorption behavior of CFN gas and its toxic decomposition product, acetonitrile (CN), on MoS surfaces doped with small copper clusters was investigated by calculating the adsorption energy and density of states, etc.

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Aiming at the problems of low fault diagnosis accuracy caused by insufficient samples and unbalanced data sample distribution in bearing fault diagnosis, this paper proposes a fault diagnosis method for rolling bearings referencing conditional deep convolution adversarial generative networks (C-DCGAN) for efficient data augmentation. Firstly, the concept of conditional constraints is used to guide and improve the sample generation process of the original generative adversarial network, and specific constraints are added to the data generation model to perform a balanced expansion of muti-category fault data for small sample data sets. Secondly, aiming at the phenomena of training instability, gradient disappearance and gradient explosion in the imbalanced sample set, it is proposed to optimize the structure of the generative network by using the structure of self-defined skip connections and spectral normalization, while using the Wasserstein distance with penalty term instead of cross entropy.

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In turbofan engine datasets, to address problems, such as noise interference, diverse data types, large data volumes, complex feature extraction, inability to effectively describe degradation trends, and poor remaining useful life (RUL) prognosis effects, a remaining useful life prognosis model combining an improved stack sparse autoencoder (imSSAE) and an improved echo state network (imESN) is proposed in this paper. First, the 3-sigma criterion is adopted to remove the noise and reconstruct the data, and then the deep features of the engine are extracted by using an imSSAE and fused into health indicator (HI) curves describing the engine degradation trend. Finally, an attention mechanism is introduced into an imESN to adaptively process different types of data and obtain the RUL.

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Metal-organic framework (MOF) materials provide a versatile and promising platform for constructing heterogeneous photocatalysts with applications in organic transformations. One of the methods for enhancing MOFs' performance in photocatalysis relies on the elaborate design and functionalization of organic linkers. Here we reported a photoactive thiadiazolopyridine (TDP) moiety functionalized UiO-68 isoreticular Zr(iv)-based MOF (denoted as UiO-68-TDP) that was synthesized by the approach of mixed dicarboxylate struts.

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