Publications by authors named "Jia Xuemei"

Objective: This study aimed to analyse the causes of foetal mild-to-moderate isolated ventriculomegaly (IVM) and to evaluate the prognosis of neurological development in surviving children in different subgroups.

Methods: We retrospectively studied mild-to-moderate IVM diagnosed by prenatal ultrasound scans in different subgroups according to the laterality of IVM, the degree of IVM and foetal sex independently. The results of foetal chromosomal microarray analysis, virological tests of umbilical cord blood or amniotic fluid, foetal magnetic resonance imaging and ultrasound were collected.

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Pyruvate dehydrogenase kinase 1 (PDK1) is a new therapeutic target that is dysregulated in multiple tumors. This study aims to explore the potential role and regulatory mechanism of PDK1 in epithelial ovarian cancer (EOC). We detect PDK1 expression in EOC tissues and cells using qRT-PCR and western blot analysis, and the effects of PDK1 on EOC cell malignant behaviors are explored.

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Ovarian cancer is a prevalent gynecologic malignancy with the second-highest mortality rate among gynecologic malignancies. Platinum-based chemotherapy is the first-line treatment for ovarian cancer; however, a majority of patients with ovarian cancer experience relapse and develop platinum resistance following initial treatment. Despite extensive research on the mechanisms of platinum resistance at the nuclear level, the issue of platinum resistance in ovarian cancer remains largely unresolved.

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Article Synopsis
  • The study highlights the role of ALKBH5, an RNA demethylase, in regulating innate immunity, particularly during viral infections.
  • It discovers a new posttranslational modification, lactylation, that is crucial for ALKBH5’s function in boosting antiviral responses against various herpesviruses.
  • The research shows that viral infection increases lactylation of ALKBH5, which enhances the production of interferon-beta mRNA, thereby providing new insights into potential therapeutic targets for viral infections like HSV-1.
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A substantive body of evidence has demonstrated the significant roles of circular RNA (circRNA) in cancer. However, the contribution of dysregulated circRNAs to ovarian cancer (OC) remains elusive. We aim to elucidate the critical roles and mechanisms of hsa_circ_0020093, which was demonstrated to be downregulated in OC tissues in our previous study.

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Article Synopsis
  • The study investigates how the Xianglian Huazhuo formula (XLHZ) may prevent chronic atrophic gastritis (CAG) from progressing to gastric cancer (GC) using bioinformatics and laboratory analyses.
  • Researchers used high-throughput sequencing to identify differentially expressed miRNAs and target genes, and applied various techniques to study XLHZ's effects on cell behavior in CAG cells.
  • The findings suggest that XLHZ enhances E-cadherin expression while reducing factors that promote cell migration and proliferation, thereby potentially blocking the progression from CAG to GC.
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Bacteria inherently possess the capability of quorum sensing in response to the environment. In this work, we have proposed a strategy to confer bacteria with the ability to recognize targets with quorum-sensing behavior. Meanwhile, we have successfully achieved artificial control over the target-triggered aggregation of () by modifying the bacteria surface in a new way.

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Photocatalytic carbon dioxide (CO) conversion and simultaneous pollutant oxidation in a single system are promising approaches to mitigate energy and environmental challenges. However, the limited availability of active photocatalyst sites led to slow reaction kinetics and poor selectivity. Current research has predominantly focused on ground-state reactive sites of semiconductors, with less emphasis on active sites in their excited states.

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Despite the impressive achievements of Deep Neural Networks (DNNs) in computer vision, their vulnerability to adversarial attacks remains a critical concern. Extensive research has demonstrated that incorporating sophisticated perturbations into input images can lead to a catastrophic degradation in DNNs' performance. This perplexing phenomenon not only exists in the digital space but also in the physical world.

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Nutrient bioavailability in the tumor microenvironment plays a pivotal role in tumor proliferation and metastasis. Among these nutrients, glutamine is a key substance that promotes tumor growth and proliferation, and its downstream metabolite asparagine is also crucial in tumors. Studies have shown that when glutamine is exhausted, tumor cells can rely on asparagine to sustain their growth.

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The construction of cell mimics replicating the surface landscape and biological functions of the cell membrane offers promising prospects for biomedical research and applications. Inspired by the inherent recognition capability of immune cells toward pathogens, we have fabricated activated macrophage membrane-coated magnetic silicon nanoparticles (aM-MSNPs) in this work as an isolation and recognition tool for enhanced bacterial analysis. Specifically, the natural protein receptors on the activated macrophage membrane endow the MSNPs with a broad-spectrum binding capacity to different pathogen species.

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Single-stranded DNA (ssDNA) is the foundation of modern biology, with wide applications in gene editing, sequencing, DNA information storage, and materials science. However, synthesizing ssDNA with high efficiency, high throughput, and low error rate in vitro remains a major challenge. Various methods have been developed for ssDNA synthesis, and some significant results have been achieved.

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Synthetic biology, a newly and rapidly developing interdisciplinary field, has demonstrated increasing potential for extensive applications in the wide areas of biomedicine, biofuels, and novel materials. DNA assembly is a key enabling technology of synthetic biology and a central point for realizing fully synthetic artificial life. While the assembly of small DNA fragments has been successfully commercialized, the assembly of large DNA fragments remains a challenge due to their high molecular weight and susceptibility to breakage.

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The E3 ubiquitin ligase Tripartite-motif 3 (TRIM3) is known to play a crucial role in tumor suppression in various tumors through different mechanisms. However, its function and mechanism in ovarian cancer have yet to be elucidated. Our study aims to investigate the expression of TRIM3 in ovarian cancer and evaluate its role in the development of the disease.

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Although great progress has been made with respect to electron bridges, the electron mobility of the state-of-the-art electron bridges is far from satisfactory because of weak electrical conductivity. To overcome the above issue, cobalt phosphide (CoP), as a model electron bridge, was modified by superficial oxygen vacancies (OVs) and embedded into a defective bismuth oxychloride/carbon nitride (BiOCl/g-CN) Z-scheme heterojunction to obtain atomic-level insights into the effect of surface OVs on CoP electron bridges. Compared to BiOCl/g-CN and bismuth oxychloride/cobalt phosphide/carbon nitride (BiOCl/CoP/g-CN) composites, the defective bismuth oxychloride/cobalt phosphide/carbon nitride (BiOCl/CoP/g-CN) heterojunction exhibited remarkable photocatalytic redox performance, indicating that the surface OVs-assisted CoP electron bridge effectively boosted electrical conductivity and yielded ultrafast electron transfer rates.

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Intelligent artificial DNA circuits have emerged as a promising approach for modulating signaling pathways and signal transduction through rational design, which may contribute to comprehensively realizing biomolecular sensing of organisms. In this work, we have fabricated an electrochemical biosensor for the sensitive and accurate detection of ovarian cancer-derived exosomes by constructing an entropy-driven autocatalytic DNA circuit (EADC). Specifically, the robust EADC is prepared by the self-assembly of well-designed DNA probes, and upon stimulation of the presence of ovarian cancer cells-derived exosomes, numerous inputs can be produced to feedback and accelerate the reaction.

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Ethnopharmacological Relevance: Xianglianhuazhuo formula (XLHZ) has a potential therapeutic effect on chronic atrophic gastritis (CAG). However, the specific molecular mechanism remains unclear.

Aim Of The Study: To evaluate the effect of XLHZ on CAG in vitro and in vivo and its potential mechanisms.

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To develop nanocarriers for targeting the delivery of chemotherapeutics to overcome multidrug-resistant ovarian cancer. Doxorubicin-loaded nanovesicles were obtained through serial extrusion, followed by loading of P-glycoprotein siRNA and folic acid. The targeting ability and anticancer efficacy of the nanovesicles were evaluated.

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Long noncoding RNA (lncRNA) antisense RNA 1 ( ) is involved in the progression of multiple cancers, but its role in epithelial ovarian cancer (EOC) is unknown. Therefore, we investigated the expression levels of in EOC cells and normal ovarian epithelial cells by quantitative real-time PCR (qPCR). We first evaluated the effects of on the proliferation, migration, and invasion of EOC cells through cell counting kit-8, colony formation, EdU, transwell, wound-healing, and xenograft assays.

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N-acetyltransferase 10 (NAT10) is an N-acetylcytidine (acC) writer that catalyzes RNA acetylation at cytidine N position on tRNAs, rRNAs and mRNAs. Recently, NAT10 and the associated acC have been reported to increase the stability of HIV-1 transcripts. Here, we show that NAT10 catalyzes acC addition to the polyadenylated nuclear RNA (PAN), a long non-coding RNA encoded by the oncogenic DNA virus Kaposi's sarcoma-associated herpesvirus (KSHV), triggering viral lytic reactivation from latency.

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Background: Chronic atrophic gastritis (CAG) is a chronic inflammatory disease and premalignant lesion of gastric cancer. As an antimicrobial peptide, hepcidin can maintain iron metabolic balance and is susceptible to inflammation.

Objectives: The objective of this study was to clarify whether hepcidin is involved in abnormal iron metabolism and ferroptosis during CAG pathogenesis.

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Ulcerative colitis (UC) is an inflammatory bowel disease and associated with metabolic imbalance. Luteolin (LUT) reportedly exhibits anti-inflammatory activity. However, its regulatory effects on metabolites remain indistinct.

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Ovarian cancer (OC) is the second leading cause of gynecological cancer-related death in women worldwide. N6-methyladenosine (m A) is the most abundant internal modification in eukaryotic RNA. Human insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2), an m A reader, can enhance mRNA stability and promote translation by recognizing m A modifications.

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Objective: To study the function of Huazhuo Jiedu Decoction (HZJD) in promoting the homing of bone marrow mesenchymal stem cells (BMSCs) and contributing to the reconstruction of the intestinal mucosal barrier in ulcerative colitis.

Methods: Bone mesenchymal stem cells derived from mice were isolated and cultured, osteogenic and adipogenic assays to study the differentiation ability of BMSCs, and flow cytometry was used to detect the surface marker of the third generation cells. 30 mice were selected and divided into blank group, model group, HZJD group, BMSCs group, and HZJD combined with BMSCs group.

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Exosomes (EXOs) have been proven as biomarkers for disease diagnosis and agents for therapeutics. Great challenge remains in the separation of EXOs with high-purity and low-damage from complex biological media, which is critical for the downstream applications. Herein, we report a DNA-based hydrogel to realize the specific and nondestructive separation of EXOs from complex biological media.

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