Publications by authors named "XuFeng Chen"

Paclitaxel (PTX) is a first-line chemotherapeutic drug for non-small cell lung cancer (NSCLC) but it can induce indoleamine 2,3-dioxygenase (IDO) activation, which severely lowers down its immuno-chemotherapeutic effect. To address this issue, a smart peptide hydrogelator Nap-Phe-Phe-Phe-Lys-Ser-Thr-Gly-Gly-Lys-Ala-Pro-Arg-OH (Nap-T), which co-assembles with PTX and an IDO inhibitor GDC0919 to form a hydrogel GP@Gel Nap-T, is rationally designed. Upon specific phosphorylation by pyruvate kinase M2 (PKM2), an overexpressed biomarker of NSCLC, Nap-T is gradually converted to Nap-Phe-Phe-Phe-Lys-Ser-Thr(HPO)-Gly-Gly-Lys-Ala-Pro-Arg-OH (Nap-Tp), leading to dehydrogelation and sustained release of PTX and GDC0919 within NSCLC tissues.

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Reversing cardiac fibrosis contributes to the restoration of cardiac function in acute myocardial infarction (MI). Exosomes-derived mesenchymal stem cells (MSCs) have been established as potential biomarkers of cardiovascular diseases. While vericiguat has demonstrated promising outcomes in MI via reverse hypertrophy and fibrosis, previous studies about vericiguat pretreatment with MSCs is limited.

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  • Antiphospholipid syndrome (APS) IgG enhances the release of neutrophil extracellular traps (NETs), which are linked to thrombotic events, but the exact mechanism remains unclear.
  • Researchers analyzed serum from thrombotic APS patients and found elevated levels of 5-oxoETE, which they tested for its effects on NET formation and oxidative stress using various methods.
  • The study concluded that 5-oxoETE plays a significant role in promoting NET formation and thrombosis in APS, suggesting that targeting it or its receptor could be a potential treatment for APS-related thrombosis and other similar autoimmune diseases.
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Neutrophil elastase (NE) is a protease released by activated neutrophils in the brain parenchyma after cerebral ischemia, which plays a pivotal role in the regulation of neutrophil extracellular traps (NETs) formation. The excess NETs could lead to blood-brain barrier (BBB) breakdown, overwhelming neuroinflammation, and neuronal injury. While the potential of targeting neutrophils and inhibiting NE activity to mitigate ischemic stroke (IS) pathology has been recognized, effective strategies that inhibit NETs formation remain under-explored.

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Next-generation sequencing (NGS) is of great benefit to clinical practice in terms of identifying genetic alterations. This study aims to clarify the gene background and its influence on thyroid tumors in the Chinese population. NGS data and corresponding clinicopathological features (sex, age, tumor size, extrathyroidal invasion, metastasis, multifocality, and TNM stage) were collected and analyzed retrospectively from 2844 individual thyroid tumor samples from July 2021 to August 2022.

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  • - Diverse cellular stresses activate heat shock factor 1 (HSF1), which helps manage protein stability and has broader roles in promoting cancer, but its effects on immune cells in tumors are not well understood.
  • - Research using a model of HSF1 activation shows that heightened HSF1 activity in natural killer (NK) cells negatively affects their ability to kill tumors and produce cytokines for immune response.
  • - HSF1 directly influences the expression of important factors for NK cell function, suggesting that understanding its role could improve therapies using NK cells to fight cancer and lead to better treatment combinations.
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  • Traumatic spinal cord injury (SCI) causes serious neurological issues, making neuroinflammation a key target for potential treatments.
  • Researchers developed a biomimic anti-neuroinflammatory nanoplatform called DHCNPs, which uses curcumin-loaded liposomes and combines various cell membranes to effectively target and neutralize harmful neutrophils.
  • The DHCNPs can degrade neutrophil extracellular traps and promote neuron repair, suggesting a new way to manage neuroinflammation and improve SCI recovery.
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  • The study investigates how plant hormones and energy-rich compounds help Citrus sinensis leaves cope with aluminum toxicity at different pH levels, revealing more adaptive responses at pH 4.0 compared to pH 3.0.
  • At pH 4.0, a greater number of hormones and compounds were found to be responsive to aluminum toxicity, indicating that a higher pH enhances the plant's ability to manage Al stress.
  • The improved resilience includes enhanced leaf growth, better detoxification of aluminum and reactive oxygen species, and maintenance of energy compound levels, highlighting the critical role of hormones and metabolites in plant health during aluminum stress.
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  • Cancer-associated fibroblasts (CAFs) are key players in the tumor microenvironment, particularly in liver cancer, where different subsets of CAFs can influence cancer progression.
  • A new subgroup of CAFs, called F5-CAF, has been identified, showing specific markers and a close association with cancer cells that exhibit stemness, suggesting a critical role in promoting tumor growth.
  • The prevalence of F5-CAF in hepatocellular carcinoma is linked to poorer patient outcomes, highlighting its potential as a target for developing treatments aimed at disrupting CAF support for cancer stem cells.
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  • The study investigates how boron (B) helps sweet orange seedlings cope with excessive copper (Cu) levels in citrus orchard soils, focusing on gene expression, metabolite profiles, and physiological changes in the leaves.
  • Seedlings treated with high copper levels (Cu350) displayed significant changes, including a large number of gene and metabolite upregulations and downregulations, compared to those treated with lower copper and boron levels.
  • The addition of boron reduced oxidative damage and improved leaf growth by mitigating the negative effects of copper on the seedlings' metabolism and photosynthesis, indicating its potential role in promoting plant health under stress.
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Background: Clinical blood resources are scarce and autologous blood transfusion for extracorporeal membrane oxygenation (ECMO) withdrawal is less studied.

Objectives: To assess the use of staged autotransfusion during ECMO decannulation.

Methods: The study included ECMO withdrawal patients.

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Objective: To compare the haemodynamic effects of different ankle movements combined ankle and toe movements on the femoral vein of the lower extremity.

Methods: 28 healthy volunteers participated in the study. Doppler ultrasound was used to measure peak systolic velocity and time-averaged mean velocity of the common femoral vein during ankle dorsiflexion, ankle dorsiflexion with simultaneous toe extension, ankle plantarflexion, and ankle plantarflexion with simultaneous toe flexion.

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  • ECMO is a medical procedure used for severe heart and lung failure, with two types: veno-arterial ECMO (VA-ECMO) for heart issues and veno-venous ECMO for lung issues, but it comes with risks like acute kidney injury (AKI).
  • A study analyzed 120 patients over several years using two methods of combining ECMO with continuous renal replacement therapy (CRRT), comparing conventional and modified setups.
  • Results showed improved kidney function in patients using the modified setup, with no significant difference in major complications, indicating that the additional pressure regulating device may enhance treatment outcomes.
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Numerous research works have investigated the potential impact of endocrine hormones on the severity of COVID-19-related pneumonia in individuals. However, there are few studies on the effect of pre-onset neuroendocrine hormones on the prognosis of COVID-19 patients. This study looked into the prognostic value of pre-onset hair hormone levels in COVID-19 infected individuals.

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  • - The study investigates how adding boron (B) affects citrus seedlings exposed to excessive copper (Cu) levels, specifically looking at its role in reducing oxidative damage in both leaves and roots after 24 weeks of treatment.
  • - Results show that increased Cu levels led to significant increases in harmful compounds (like reactive oxygen species and malondialdehyde), but B addition helped mitigate these effects and improved detoxification systems related to oxidative stress.
  • - The findings support the idea that B reduces Cu-induced oxidative damage through different mechanisms in leaves and roots, suggesting that the interactions between Cu and B are crucial for protecting plant health.
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Accurately identifying life-threatening prostate cancer (PCa) at time of diagnosis remains an unsolved problem. We evaluated whether DNA methylation status of selected candidate genes can predict the risk of metastasis beyond clinical risk factors in men with untreated PCa. A nested case-control study was conducted among men diagnosed with localized PCa at Kaiser Permanente California between 01/01/1997-12/31/2006 who did not receive curative treatments.

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Both anaplastic thyroid cancer (ATC) and papillary thyroid cancer (PTC) originate from thyroid follicular epithelial cells, but ATC has a significantly worse prognosis and shows resistance to conventional therapies. However, clinical trials found that immunotherapy works better in ATC than late-stage PTC. Here, we used single-cell RNA sequencing (scRNA-Seq) to generate a single-cell atlas of thyroid cancer.

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Pathological pain emerges from nociceptive system dysfunction, resulting in heightened pain circuit activity. Various forms of circuitry plasticity, such as central sensitization, synaptic plasticity, homeostatic plasticity, and excitation/inhibition balance, contribute to the malfunction of neural circuits during pain pathogenesis. Recently, a new form of plasticity in the spinal dorsal horn (SDH), named neural circuit polarization (NCP), was discovered in pain models induced by HIV-1 gp120 and chronic morphine administration.

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The MHC-I antigen presentation (AP) pathway is key to shaping mammalian CD8 T cell immunity, with its aberrant expression closely linked to low tumor immunogenicity and immunotherapy resistance. While significant attention has been given to genetic mutations and downregulation of positive regulators that are essential for MHC-I AP, there is a growing interest in understanding how tumors actively evade MHC-I expression and/or AP through the induction of MHC-I inhibitory pathways. This emerging field of study may offer more viable therapeutic targets for future cancer immunotherapy.

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  • This study examines how boron (B) supplementation affects the remodeling of plant cell walls (CW) in Citrus sinensis seedlings exposed to high levels of copper (Cu).
  • The researchers found that adding B helped mitigate the harmful effects of Cu by lowering its concentrations in the plant's leaves and roots, thus promoting healthier growth.
  • Techniques like Fourier transform infrared (FTIR) and X-ray diffraction (XRD) were used to show that certain components of the cell walls (such as pectin and cellulose) can bind to Cu, reducing its toxic effects on the plants.
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Background: Autophagic defects are involved in Methamphetamine (Meth)-induced neurotoxicity. Syntaxin 17 (Stx17), a member of the SNARE protein family, participating in several stages of autophagy, including autophagosome-late endosome/lysosome fusion. However, the role of Stx17 and potential mechanisms in autophagic defects induced by Meth remain poorly understood.

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  • Researchers studied 'Xuegan' (Citrus sinensis) seedlings' response to manganese (Mn) in hydroponic conditions, finding that increased Mn supply decreased both Mn absorption and its translocation from roots to shoots.
  • Without Mn, the seedlings increased the pH of the solution, but higher Mn levels reduced this alkalization and led to more secretion of root total phenolics, while pH dropped.
  • Metabolomic analysis revealed that Mn-tolerant seedlings upregulated various phenolic and secondary metabolites, indicating a complex response mechanism to manage high Mn levels and maintain tolerance.
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() is an ascosporogenic species of yeast that belongs to the genus and the family of Saccharomycetaceae. It has recently been found to cause various types of infections, particularly in critically ill immunocompromised patients. The present study describes a case of hospital-acquired pneumonia caused by during veno-arterial extracorporeal membrane oxygenation.

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Aims: Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is an important technique for the treatment of refractory cardiogenic shock and cardiac arrest; however, the early management of ventricular fibrillation/ventricular tachycardia (VF/VT), within 72 h of VA-ECMO, and its effects on patient prognosis remain unclear.

Methods And Results: We retrospectively analysed patients at the First Affiliated Hospital of Nanjing Medical University who underwent VA-ECMO between January 2017 and March 2022. The patients were divided into two groups, VF/VT and nVF/VT, based on whether or not VF/VT occurred within 72 h after the initiation of VA-ECMO.

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Background: The ion shift index (ISI) as a prognostic indicator that can show the severity of hypoxic-ischemic injury. We aimed to evaluate the performance of the ISI in predicting unfavorable neurological outcomes at hospital discharge in cardiac arrest (CA) patients following extracorporeal cardiopulmonary resuscitation (ECPR) and to compare its performance to other prognostic predictors.

Methods: This was a retrospective observational study including adult CA patients treated with ECPR between January 2018 and December 2022 in a tertiary hospital.

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Synopsis of recent research by authors named "XuFeng Chen"

  • - Xufeng Chen's recent research primarily focuses on the interplay between neutrophil extracellular traps (NETs) and various pathological conditions, including antiphospholipid syndrome, ischemic stroke, and spinal cord injuries, aiming to uncover mechanisms for therapeutic intervention.
  • - His studies highlight the use of innovative technologies such as untargeted metabolomics, multi-region proteomics, and spatial transcriptomics to elucidate cellular interactions and metabolic changes related to immune responses and inflammation in disease contexts.
  • - Additionally, Chen's work extends to the environmental aspects of plant biology, investigating how hormonal and metabolomic responses to pH levels can alleviate toxic effects in citrus plants, showcasing a commitment to interdisciplinary research encompassing both medical and ecological perspectives.