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1.
RSC Adv ; 14(43): 31587-31597, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-39372045

RESUMO

Coal is a premium carbon material precursor as anode materials for sodium-ion batteries (SIBs). Additionally, developing anode materials with large capacity and rapid charging performance is essential for the advancement of SIBs. Consequently, in this work, coal-based reduced graphene oxide (CrGO) was prepared as an anode materials for SIBs by a modified Hummers-high temperature thermal reduction method with different ranks of coal (coal-based graphite, CG) as a precursor. The CG prepared from higher-rank coal exhibits a higher degree of graphitization, and its graphene layers are easier to exfoliate. The unique microstructure of CrGO provides stability during the sodium storage process and exhibits fast ion capacitive adsorption behavior, enhancing reaction kinetics. CrGO, with an initial reversible capacity of up to 331 mA h g-1 at a current density of 0.03 A g-1, achieves a specific capacity of 75 mA h g-1, even at a high current density of 10 A g-1. Notably, CrGO also maintains a good specific capacity of 123 mA h g-1 after 1000 cycles at a current density of 1 A g-1, with a capacity retention rate of 91.8%. This study highlights the potential for using coal-derived materials in the development of high-performance anode materials for SIBs, promoting the green and high-value utilization of coal.

2.
Front Oncol ; 14: 1442601, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39281380

RESUMO

Purpose: Fibroblast activation protein (FAP) is highly expressed in the mesenchyme of most malignant epithelial tumors, while its expression is low in normal tissues. FAP inhibitors (FAPIs) bind specifically to FAP and are used for tumor-targeted diagnosis and therapy. The aim of this study was to radiosynthesize a novel molecular probe 131I-FAPI and evaluate its in-vitro targeting and biological characteristics. Methods: The structurally modified FAPI was labelled with 131I through the chloramine-T method. The radiolabeling rate was then detected by thin-layer chromatography (TLC). The stability of 131I-FAPI was determined at PBS (room temperature) and serum (37°C). Its hydrophilicity was calculated by measuring its lipid-water partition coefficient. Pancreatic cancer PANC-1 cell line and glioma U87 cell line were cultured in vitro. Cell uptake assay was used to show the binding ability of 131I-FAPI. The CCK-8 assay was used to calculate the inhibitory effects of 131I-FAPI at different time points (4h, 8h, 12h, 24h, 48h) after comparing with the 131I and FAPI. The before-and-after-24h scratch areas of the two cells were determined in order to verify the effect of 131I-FAPI on the migration ability of the cells. Results: The radiolabeling rate was (84.9 ± 1.02) %. The radiochemical purity of 131I-FAPI remained over 80% in both 25°C PBS and 37°C serum. The value of the lipid-water partition coefficient was -0.869 ± 0.025, indicating the hydrophilic of the probe. The cellular uptake assay showed that U87 cells had a specific binding capacity for 131I-FAPI. In cell inhibition assays, the inhibitory effect of 131I-FAPI on U87 cells increased with time. The results of cell scratch assay showed that 131I-FAPI had the strongest inhibitory effect on the migratory ability of U87 cells compared with 131I and FAPI (P<0.001). Conclusion: 131I-FAPI was synthesized with good in-vitro stability and hydrophilic properties. It can be specifically bound by U87 cells. The proliferation and migration of U87 cells can be effectively inhibited. 131I-FAPI is promising to become a therapeutic probe.

3.
J Robot Surg ; 18(1): 343, 2024 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-39312046

RESUMO

Because of the increasing popularity of Hugo RAS as a surgical platform, a comparison examination of intraoperative and oncological outcomes across DaVinci and Hugo RAS robotic surgery platforms is urgently needed. We carried out a comprehensive review and meta-analysis of the literature of current research, comprehensively searching PubMed, Cochrane and Embase for eligible studies comparing the results between the DaVinci and Hugo RAS. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) criteria were followed in the conduct of this study, with language restricted to English and a final search date of June 2024. We excluded articles composed solely of conference abstracts and irrelevant content. Composite outcomes were assessed using weighted mean differences (WMD) and odds ratios (ORs). The risk of bias in individual research was assessed using the Newcastle-Ottawa Scale (NOS), and heterogeneity and bias risk were controlled for using a sensitivity analysis. Six studies in all were considered, comprising 1025 patients, including 626 DaVinci patients and 399 Hugo RAS patients. Review Manager V5.4.1 software (Cochrane Collaboration, Oxford, UK) was utilized to conduct the meta-analysis, including 6 trials, which demonstrated that compared to Hugo RAS, DaVinci was associated with statistically significant differences in several outcomes: a reduction in operative time (OT) (WMD - 8.46, 95% CI - 13.56 to 3.36; p = 0.001), an increase in estimated blood loss (EBL) (WMD 41.68, 95% CI 23.59 to 59.77; p < 0.00001), and an increased pelvic lymphadenectomy ratio (OR 1.5, 95% CI 1.05-2.05; p = 0.01). On the contrary, there were no statistically noteworthy differences in the length of hospital stay (LOS) between the two teams (WMD - 0.05, 95% CI - 0.14 to 0.04; p = 0.25), nerve sparing (unilateral or bilateral) (OR 0.96, 95% CI 0.68-1.35; p = 0.8), postoperative complications (OR 1.15, 95% CI 0.50-2.64; p = 0.75), or positive surgical margins (PSM) (OR 1.08, 95% CI 0.76-1.54; p = 0.68). Although DaVinci offers shorter operating times (OT) and increased pelvic lymph node dissection rates, Hugo RAS demonstrates lower estimated blood loss (EBL). Overall, Hugo RAS Robot-Assisted Radical Prostatectomy (RARP) results seem to be similar to those obtained with the DaVinci system. Further research and long-term follow-up are necessary to ascertain durable oncological and functional outcomes, allowing doctors to switch between robotic systems and use their skills. These findings are crucial for patients, surgeons, and healthcare policymakers and warrant future studies with extended follow-up.


Assuntos
Duração da Cirurgia , Prostatectomia , Neoplasias da Próstata , Procedimentos Cirúrgicos Robóticos , Humanos , Masculino , Perda Sanguínea Cirúrgica/estatística & dados numéricos , Tempo de Internação/estatística & dados numéricos , Excisão de Linfonodo/métodos , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/epidemiologia , Prostatectomia/efeitos adversos , Prostatectomia/instrumentação , Prostatectomia/métodos , Neoplasias da Próstata/cirurgia , Procedimentos Cirúrgicos Robóticos/efeitos adversos , Procedimentos Cirúrgicos Robóticos/instrumentação , Procedimentos Cirúrgicos Robóticos/métodos , Resultado do Tratamento
4.
Food Chem ; 460(Pt 3): 140734, 2024 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-39106751

RESUMO

Angiotensin I-converting enzyme (ACE) regulates blood pressure through the renin-angiotensin system. Douchi, a traditional fermented soybean condiment, may have antihypertensive effects, but research on ACE inhibitory peptides from Douchi hydrolysates is limited. We hypothesized that enzymatic treatment could enhance ACE inhibitory peptide diversity and efficacy. We tested ten single enzymes and four combinations, finding pepsin-trypsin-chymotrypsin most effective. Hydrolysates were purified using Sephadex G-15 and reversed-phase HPLC, and peptides were identified via LC-MS/MS. Five peptides (LF, VVF, VGAW, GLFG, NGK) were identified, with VGAW as the most potent ACE inhibitor (IC50 46.6 ± 5.2 µM) showing excellent thermal and pH stability. Lineweaver-Burk plots confirmed competitive inhibition, and molecular docking revealed eight hydrogen bonds between VGAW and ACE. In hypertensive rats, VGAW significantly reduced blood pressure at 12.5, 25, and 50 mg/kg. These findings highlight Douchi as a source of ACE inhibitory peptides and suggest VGAW as a promising functional food ingredient.


Assuntos
Inibidores da Enzima Conversora de Angiotensina , Anti-Hipertensivos , Pressão Sanguínea , Hipertensão , Peptídeos , Peptidil Dipeptidase A , Ratos Endogâmicos SHR , Animais , Inibidores da Enzima Conversora de Angiotensina/química , Inibidores da Enzima Conversora de Angiotensina/farmacologia , Inibidores da Enzima Conversora de Angiotensina/isolamento & purificação , Anti-Hipertensivos/química , Anti-Hipertensivos/farmacologia , Ratos , Peptídeos/química , Peptídeos/farmacologia , Peptídeos/isolamento & purificação , Hipertensão/tratamento farmacológico , Hipertensão/fisiopatologia , Hipertensão/metabolismo , Peptidil Dipeptidase A/química , Peptidil Dipeptidase A/metabolismo , Masculino , Pressão Sanguínea/efeitos dos fármacos , Simulação de Acoplamento Molecular , Humanos , Glycine max/química , Hidrolisados de Proteína/química , Hidrolisados de Proteína/farmacologia , Hidrólise
5.
Food Funct ; 15(18): 9224-9234, 2024 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-39158526

RESUMO

This study investigates the characterization, mechanisms of action, structure-activity relationships, and in vivo antihypertensive effects of ACE inhibitory peptides derived from sufu hydrolysate following simulated gastrointestinal digestion. Sufu was enzymatically digested using pepsin, trypsin, and chymotrypsin to mimic gastrointestinal conditions, followed by ultrafiltration to fractionate the peptides based on molecular weight. The fraction under 1 kDa exhibited the highest ACE inhibitory activity. LC-MS/MS analysis identified 119 peptide fragments, with bioinformatics screening highlighting 41 peptides with potential ACE inhibitory properties. Among these, two peptides, AWR and LLR, were selected and synthesized for in vitro validation, displaying IC50 values of 98.04 ± 2.56 µM and 94.01 ± 5.07 µM, respectively. Stability tests showed that both peptides maintained their ACE inhibitory activity across various temperatures and pH levels. Molecular docking and Highest Occupied Molecular Orbital analysis indicated strong binding interactions between these peptides and ACE, with the second-position tryptophan in AWR and the N-terminal leucine in LLR identified as key bioactive sites. These findings were further supported by molecular dynamics simulations, which confirmed the stability of the peptide-ACE complexes. In vivo studies using spontaneously hypertensive rats demonstrated significant reductions in both systolic and diastolic blood pressure, indicating that AWR and LLR have strong antihypertensive potential. This study illustrates that ultrafiltration, combined with LC-MS/MS and bioinformatics analysis, is an effective approach for the rapid screening of ACE inhibitory peptides. These results not only enhance our understanding of sufu-derived peptides but also offer promising implications for hypertension management.


Assuntos
Inibidores da Enzima Conversora de Angiotensina , Anti-Hipertensivos , Peptídeos , Ratos Endogâmicos SHR , Inibidores da Enzima Conversora de Angiotensina/farmacologia , Inibidores da Enzima Conversora de Angiotensina/química , Anti-Hipertensivos/farmacologia , Anti-Hipertensivos/química , Animais , Ratos , Peptídeos/química , Peptídeos/farmacologia , Masculino , Hidrolisados de Proteína/química , Hidrolisados de Proteína/farmacologia , Relação Estrutura-Atividade , Simulação de Acoplamento Molecular , Pressão Sanguínea/efeitos dos fármacos , Hipertensão/tratamento farmacológico , Peptidil Dipeptidase A/química , Peptidil Dipeptidase A/metabolismo , Espectrometria de Massas em Tandem
6.
J Robot Surg ; 18(1): 321, 2024 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-39136882

RESUMO

The safety and efficacy of single-port and multi-port robot-assisted partial nephrectomy (SP-RAPN and MP-RAPN, respectively) were assessed for treating partial nephrectomy in this study. A systematic review of PubMed, Cochrane Library, and Web of Science databases was conducted up to June 2024 to compare studies on SP-RAPN and MP-RAPN. Primary outcomes included perioperative results, complications, and oncological outcomes. Eight studies involving 1014 patients were analyzed. For binary outcomes, comparisons were performed using odds ratios (OR), and for continuous variables, weighted mean differences (WMD) with 95% confidence intervals (CI). The search failed to discover significant meaningful variations in operating times (p = 0.54), off-clamp procedure (P = 0.36), blood loss (p = 0.31), positive surgical margins (PSMs) (p = 0.78), or major complications (Clavien-Dindo grade ≥ 3) (p = 0.68) between SP-RAPN and MP-RAPN. However, shorter hospital stays (WMD - 0.26 days, 95% CI - 0.36 to - 0.15; p < 0.00001) and longer warm ischemia times (WIT) (WMD 3.13 min, 95% CI 0.81-5.46; p = 0.008) were related to SP-RAPN, and higher transfusion rate (OR 2.99, 95% CI 1.31-6.80; p = 0.009) compared to MP-RAPN. SP-RAPN performed better in terms of hospital stay but had slightly higher rates of transfusion, off-clamp procedures, and warm ischemia time (WIT) compared to MP-RAPN. As an emerging technology, preliminary research suggests that SP-RAPN is a feasible and safe method for carrying out a nephrectomy partial. However, compared to MP-RAPN, it shows inferior outcomes regarding (WIT) and transfusion rates.


Assuntos
Neoplasias Renais , Tempo de Internação , Nefrectomia , Duração da Cirurgia , Procedimentos Cirúrgicos Robóticos , Nefrectomia/métodos , Procedimentos Cirúrgicos Robóticos/métodos , Procedimentos Cirúrgicos Robóticos/efeitos adversos , Humanos , Neoplasias Renais/cirurgia , Resultado do Tratamento , Tempo de Internação/estatística & dados numéricos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Perda Sanguínea Cirúrgica/estatística & dados numéricos , Isquemia Quente , Período Perioperatório , Margens de Excisão
7.
Sensors (Basel) ; 24(14)2024 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-39066113

RESUMO

Hyperspectral image (HSI) classification is a vital part of the HSI application field. Since HSIs contain rich spectral information, it is a major challenge to effectively extract deep representation features. In existing methods, although edge data augmentation is used to strengthen the edge representation, a large amount of high-frequency noise is also introduced at the edges. In addition, the importance of different spectra for classification decisions has not been emphasized. Responding to the above challenges, we propose an edge-aware and spectral-spatial feature learning network (ESSN). ESSN contains an edge feature augment block and a spectral-spatial feature extraction block. Firstly, in the edge feature augment block, the edges of the image are sensed, and the edge features of different spectral bands are adaptively strengthened. Then, in the spectral-spatial feature extraction block, the weights of different spectra are adaptively adjusted, and more comprehensive depth representation features are extracted on this basis. Extensive experiments on three publicly available hyperspectral datasets have been conducted, and the experimental results indicate that the proposed method has higher accuracy and immunity to interference compared to state-of-the-art (SOTA) method.

8.
Nanomedicine ; 61: 102763, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-38897395

RESUMO

The primary challenge in percutaneous coronary interventions for vascular restenosis is the occurrence of restenosis, which is defined by the excessive proliferation of neointimal tissue. Herein, our research team suggests that exosomes obtained from PSC, when paired with quercetin (Q@PSC-E), successfully reduce neointimal hyperplasia in a Sprague-Dawley rat model. Furthermore, the physical properties of the synthesized Q@PSC-E were examined using UV-vis, DLS, and FT-IR characterization techniques. The rats were subjected to balloon injury (BI) utilizing a 2-Fr Fogarty arterial embolectomy balloon catheter. Intimal hyperplasia and the degree of VSMC proliferation were evaluated using histological analysis in the rat groups that received a dosage of Q@PSC-E at 30 mg/kg/d. Significantly, Q@PSC-E inhibited cell proliferation through a pathway that does not include lipoxygenase, as demonstrated by [3H] thymidine incorporation, MTT, and flow cytometry studies. Additionally, the data indicate that Q@PSC-E hinders cell proliferation by targeting particular events that promote cell growth, including the activation of Akt and NF-κB, disruption of cell-cycle progression and also obstructs the ERK signaling pathway.


Assuntos
Proliferação de Células , Exossomos , Hiperplasia , Proteínas Proto-Oncogênicas c-akt , Quercetina , Transdução de Sinais , Animais , Masculino , Ratos , Lesões das Artérias Carótidas/patologia , Lesões das Artérias Carótidas/tratamento farmacológico , Lesões das Artérias Carótidas/metabolismo , Proliferação de Células/efeitos dos fármacos , Exossomos/metabolismo , Exossomos/efeitos dos fármacos , Hiperplasia/patologia , Hiperplasia/tratamento farmacológico , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , NF-kappa B/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Quercetina/farmacologia , Quercetina/química , Ratos Sprague-Dawley , Transdução de Sinais/efeitos dos fármacos , Túnica Íntima/patologia , Túnica Íntima/efeitos dos fármacos , Túnica Íntima/metabolismo
9.
Int J Biol Macromol ; 272(Pt 1): 132833, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38834112

RESUMO

Chicken meat processing generates a substantial number of byproducts, which are either underutilized or improperly disposed. In this study, we employed in silico approaches to identify antioxidant peptides in chicken liver byproducts. Notably, the peptide WYR exhibited remarkable 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging activity with an IC50 of 0.13 ± 0.01 mg/mL and demonstrated stability under various conditions, including thermal, pH, NaCl, and simulated gastrointestinal digestion. Molecular docking analysis revealed significant hydrogen bonding interactions, while molecular dynamics showed differential stability with ABTS and 2,2-Diphenyl-1-picrylhydrazyl (DPPH). WYR exhibited improved stress resistance, decreased levels of reactive oxygen species (ROS), elevated the activities of superoxide dismutase (SOD) and catalase (CAT), and modulated the expression of crucial genes through the insulin/insulin-like growth factor (IIS) signaling pathway, mitogen-activated protein kinase (MAPK), and heat shock transcription factor-1 (HSF-1) pathways. These effects collectively contributed to the extension of Caenorhabditis elegans' lifespan. This study not only provides an effective method for antioxidant peptide analysis but also highlights the potential for enhancing the utilization of poultry byproducts.


Assuntos
Antioxidantes , Caenorhabditis elegans , Galinhas , Fígado , Simulação de Acoplamento Molecular , Peptídeos , Animais , Caenorhabditis elegans/efeitos dos fármacos , Antioxidantes/farmacologia , Antioxidantes/química , Peptídeos/química , Peptídeos/farmacologia , Fígado/efeitos dos fármacos , Fígado/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Envelhecimento/efeitos dos fármacos , Simulação por Computador , Superóxido Dismutase/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Catalase/metabolismo
10.
Sci Rep ; 14(1): 14338, 2024 06 21.
Artigo em Inglês | MEDLINE | ID: mdl-38906920

RESUMO

Previous research has produced inconsistent findings concerning the connection between metabolic syndrome and prostate cancer. It is challenging for observational studies to establish a conclusive causal relationship between the two. However, Mendelian randomization can provide stronger evidence of causality in this context. To examine the causal link between a metabolic composite and its components with prostate cancer, we performed a two-sample Mendelian randomization (MR) study utilizing aggregated data from genome-wide association studies, followed by meta-analyses. In our study, we employed inverse variance weighting as the primary method for MR analysis. Additionally, we assessed potential sources of heterogeneity and horizontal pleiotropy through the Cochran's Q test and MR-Egger regression. Moreover, we used multivariate MR to determine whether smoking versus alcohol consumption had an effect on the outcomes. We found no causal relationship between metabolic syndrome and its components and prostate cancer(MetS, odds ratio [OR] = 0.95, 95% confidence interval [CI] = 0.738-1.223, p = 0.691; TG, [OR] = 1.02, 95%[CI] = 0.96-1.08, p = 0.59); HDL, [OR] = 1.02, 95% [CI] = 0.97-1.07, p = 0.47; DBP, [OR] = 1.00, 95%[CI] = 0.99-1.01, p = 0.87; SBP, [OR] = 1.00, 95%[CI] = 0.99-1.00, p = 0.26; FBG [OR] = 0.92, 95%[CI] = 0.81-1.05, p = 0.23; WC, [OR] = 0.93, 95%[CI] = 0.84-1.03, p = 0.16). Finally, the MVMR confirms that the metabolic syndrome and its components are independent of smoking and alcohol consumption in prostate cancer. We didn't find significant evidence to determine a causal relationship between the metabolic syndrome and its components and prostate cancer through MR analysis. Further research is necessary to explore the potential pathogenesis between the two diseases.


Assuntos
Estudo de Associação Genômica Ampla , Análise da Randomização Mendeliana , Síndrome Metabólica , Neoplasias da Próstata , Humanos , Masculino , Consumo de Bebidas Alcoólicas/efeitos adversos , Síndrome Metabólica/genética , Razão de Chances , Polimorfismo de Nucleotídeo Único , Neoplasias da Próstata/genética , Fatores de Risco , Fumar/efeitos adversos
11.
Cell Mol Biol (Noisy-le-grand) ; 70(5): 258-262, 2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38814206

RESUMO

In recent years, bladder carcinoma (BC) has shown an increasing incidence, with poor patient outcomes. In clinical practice, BC is still mainly treated by surgery combined with chemoradiotherapy. However, as chemotherapy resistance of tumor cells becomes more and more obvious, it is urgent to find more effective BC treatment regimes. With the increasing application and growing attention paid to epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) in various neoplastic diseases, EGFR-TKIs have been considered as a new treatment direction in the future. In this study, the research team used AG1478, an EGFR-TKI, to intervene with the BC cell line T24. It was found that the cell activity was statistically decreased, the apoptosis was enhanced, and the cells were dominantly arrested in the G0/G1 phase, confirming the future therapeutic potential of EGFR-TKIs in BC. Besides, the research team further observed that AG1478 also promoted pyroptosis in T24 cells, and its mechanism is related to the induction of mitochondrial oxidative stress damage. The findings lay a more reliable foundation for the future application of EGFR-TKIs in BC.


Assuntos
Apoptose , Pontos de Checagem do Ciclo Celular , Receptores ErbB , Mitocôndrias , Inibidores de Proteínas Quinases , Quinazolinas , Tirfostinas , Neoplasias da Bexiga Urinária , Humanos , Receptores ErbB/metabolismo , Receptores ErbB/antagonistas & inibidores , Neoplasias da Bexiga Urinária/tratamento farmacológico , Neoplasias da Bexiga Urinária/metabolismo , Neoplasias da Bexiga Urinária/patologia , Mitocôndrias/efeitos dos fármacos , Mitocôndrias/metabolismo , Apoptose/efeitos dos fármacos , Linhagem Celular Tumoral , Tirfostinas/farmacologia , Inibidores de Proteínas Quinases/farmacologia , Quinazolinas/farmacologia , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Piroptose/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos
12.
Mol Carcinog ; 63(9): 1682-1696, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38818897

RESUMO

Exploring targets for inhibiting androgen receptor (AR) activity is an effective strategy for suppressing the development of castration-resistant prostate cancer (CRPC). Upregulation of histone demethylase JMJD2A activity is an important factor in increasing AR expression in CRPC. Based on our research, we found that the binding affinity between JMJD2A and AR increases in CRPC, while the level of AR histone methylation decreases and the H3K27ac level increases in the AR enhancer region. Further investigations revealed that overexpression of the histone demethylase JMJD2A increased the binding affinity between JMJD2A and AR, decreased AR histone methylation levels, upregulated H3K27ac in the AR enhancer region, and increased AR activity. Conversely, knocking down JMJD2A effectively reversed these effects. Additionally, in CRPC, JMJD2A expression was upregulated, the tumor-intrinsic immune cGAS-STING signaling pathway was suppressed, the tumor microenvironment was altered, and AR expression was upregulated. However, both knocking down JMJD2A and inhibiting the cyclic GMP-AMP synthase/stimulator of interferon genes (cGAS-STING) signaling pathway reversed these effects. In summary, our study indicates that in CRPC, JMJD2A can directly bind to AR and activate residual AR enhancers through its demethylation activity, thereby promoting AR expression. Furthermore, upregulation of JMJD2A expression inhibits the innate immune cGAS-STING signaling pathway of the tumor, leading to a decrease in antitumor immune function, and further promoting AR expression.


Assuntos
Regulação Neoplásica da Expressão Gênica , Histona Desmetilases com o Domínio Jumonji , Proteínas de Membrana , Nucleotidiltransferases , Neoplasias de Próstata Resistentes à Castração , Receptores Androgênicos , Transdução de Sinais , Masculino , Humanos , Neoplasias de Próstata Resistentes à Castração/genética , Neoplasias de Próstata Resistentes à Castração/metabolismo , Neoplasias de Próstata Resistentes à Castração/patologia , Receptores Androgênicos/metabolismo , Receptores Androgênicos/genética , Histona Desmetilases com o Domínio Jumonji/metabolismo , Histona Desmetilases com o Domínio Jumonji/genética , Nucleotidiltransferases/metabolismo , Nucleotidiltransferases/genética , Proteínas de Membrana/metabolismo , Proteínas de Membrana/genética , Animais , Linhagem Celular Tumoral , Camundongos , Elementos Facilitadores Genéticos , Microambiente Tumoral , Proliferação de Células
13.
Phys Rev Lett ; 132(8): 080201, 2024 Feb 23.
Artigo em Inglês | MEDLINE | ID: mdl-38457732

RESUMO

Entanglement in bipartite systems has been applied to generate secure random numbers, which are playing an important role in cryptography or scientific numerical simulations. Here, we propose to use multipartite entanglement distributed between trusted and untrusted parties for generating randomness of arbitrary dimensional systems. We show that the distributed structure of several parties leads to additional protection against possible attacks by an eavesdropper, resulting in more secure randomness generated than in the corresponding bipartite scenario. Especially, randomness can be certified in the group of untrusted parties, even when there is no randomness in either of them individually. We prove that the necessary and sufficient resource for quantum randomness in this scenario is multipartite quantum steering when each untrusted party has a choice between only two measurements. However, the sufficiency no longer holds with more measurement settings. Finally, we apply our analysis to some experimentally realized states and show that more randomness can be extracted compared with the existing analysis.

14.
Water Sci Technol ; 89(3): 653-669, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38358495

RESUMO

As an important component of the deep tunnel drainage system for dealing with urban waterlogging, the rotating stepped dropshaft has been proposed due to its small air entrainment. However, the hydraulic characteristics inside the shaft still need to be fully studied. In this study, the flow patterns, water velocity, and pressure in the rotating stepped dropshaft under different flow rates and geometric parameters were studied using a three-dimensional numerical model. The results show that increasing the central angle of the step and reducing the step height can both reduce the terminal velocity. A theoretical formula for predicting the terminal velocity was established and well validated. The connection between the shaft and the outlet pipe poses a severe threat to the structural safety due to alternating positive and negative pressures. Wall-attached swirling flow generates a circular high-pressure zone at the bottom of the dropshaft and the larger the flow rate, the greater the pressure gradient at the center of the bottom. By using the momentum theorem and considering the impact pressure range of the swirling flow, the shaft bottom pressure can be predicted reasonably well.


Assuntos
Água , Movimento (Física)
15.
Biomaterials ; 306: 122506, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38354517

RESUMO

The most common chronic liver illness, non-alcoholic fatty liver disease (NAFLD), refers to a range of abnormalities of the liver with varying degrees of steatosis. When the clinical symptoms including liver damage, inflammation, and fibrosis, are added to the initial steatosis, NAFLD becomes non-alcoholic steatohepatitis (NASH), the problematic and severe stage. The diagnosis of NASH at the right time could therefore effectively prevent deterioration of the disease. Considering that platelets (PLTs) could migrate to the sites of inflamed liver sinusoids with oxidative stress during the development of NASH, we purified the PLTs from fresh blood and engineered their surface with hydrogen peroxide (H2O2) responsive fluorescent probe (5-DP) through lipid fusion. The engineered PLT-DPs were recruited and trapped in the inflammation foci of the liver with NASH through interaction with the extracellular matrix, including hyaluronan and Kupffer cells. Additionally, the fluorescence of 5-DP on the surface of PLT-DP was significantly enhanced upon reacting with the elevated level of H2O2 in the NASH liver. Thus, PLT-DP has great promise for NASH fluorescence imaging with high selectivity and sensitivity.


Assuntos
Hepatopatia Gordurosa não Alcoólica , Humanos , Peróxido de Hidrogênio , Fígado/patologia , Cirrose Hepática/patologia , Inflamação/patologia
16.
Pharmacol Rep ; 76(2): 273-286, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38388810

RESUMO

Renal cell carcinoma (RCC) arises from the tubular epithelial cells of the nephron. It has the highest mortality rate among urological cancers. There are no effective therapeutic approaches and no non-invasive biomarkers for diagnosis and follow-up. Thus, suitable novel biomarkers and therapeutic targets are essential for improving RCC diagnosis/prognosis and treatment. Circulating exosomes such as exosomal microRNAs (Exo-miRs) provide non-invasive prognostic/diagnostic biomarkers and valuable therapeutic targets, as they can be easily isolated and quantified and show high sensitivity and specificity. Exosomes secreted by an RCC can exhibit alterations in the miRs' profile that may reflect the cellular origin and (patho)physiological state, as a ''signature'' or ''fingerprint'' of the donor cell. It has been shown that the transportation of renal-specific miRs in exosomes can be rapidly detected and measured, holding great potential as biomarkers in RCC. The present review highlights the studies reporting tumor microenvironment-derived Exo-miRs with therapeutic potential as well as circulating Exo-miRs as potential diagnostic/prognostic biomarkers in patients with RCC.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , MicroRNAs , Humanos , MicroRNAs/genética , Carcinoma de Células Renais/diagnóstico , Carcinoma de Células Renais/genética , Carcinoma de Células Renais/patologia , Prognóstico , Neoplasias Renais/diagnóstico , Neoplasias Renais/genética , Neoplasias Renais/patologia , Biomarcadores , Biomarcadores Tumorais/genética , Microambiente Tumoral
17.
Environ Sci Pollut Res Int ; 31(8): 11647-11665, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38224433

RESUMO

The oxidation characteristics and spontaneous combustion (SC) tendency of raw long-flame coal (RC), water-soaked 200-day coal (S200), pre-oxidized water-soaked coal at 200 °C (O200S200), and pre-oxidized soaked coal at 300 °C (O300S200) in an oxygen-poor environment were investigated using a programmed warming system. The results show that pre-oxidation water-soaked treatment (PWT) promotes the coal-oxygen complex reaction and increases the rate of coal oxygen consumption (OCR) and the rate of carbon and oxygen compound production. The rate of CO and CO2 production of the water-soaked (WS) coal increased by 0.329 mol·(cm3·s)-1 and 0.922 mol·(cm3·s)-1, respectively, compared with that of the original coal sample. PWT reduces the activation energy of coal in the low-temperature oxidation stage (the maximum difference can be up to 110.99 kJ/mol) and enhances the oxidizing and heat-releasing capacity. There was a synergistic effect between the pre-oxidation (PO) and WS treatment, and the lowest comprehensive determination index of the SC propensity of coal in O200S200 samples was 831.92 which was 4.72 lower than that of RC samples, presenting a more SC tendency. Low oxygen concentration has an inhibitory effect on the oxidation characteristic parameters of coal, and the apparent activation energy of the low-temperature oxidation stage of pre-oxidized water-soaked coal (PWC) increased to 206.418 kJ/mol at 3% oxygen concentration. The lower the oxygen concentration of the anoxic environment, the lower the risk of SC of the coal samples. The results of the study can provide theoretical guidance for the identification and prevention of SC disasters in coal seams with shallow burial and close spacing.


Assuntos
Carvão Mineral , Oxigênio , Oxigênio/análise , Combustão Espontânea , Água , Temperatura Alta
18.
Toxicol In Vitro ; 95: 105746, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38043628

RESUMO

N6-methyladenosine (m6A) modification, the most abundant methylation modification on eukaryotic mRNAs, was implicated in the tumourigenesis. This study aimed to explore the role of methyltransferase like 3 (METTL3) in triple-negative breast cancer progression and its underlying mechanisms. FAM83D was markedly elevated in triple-negative breast cancer tissues and cells, and high expression of FAM83D was related to the poor prognosis of triple-negative breast cancer patients. FAM83D knockdown significantly retarded cell proliferation, invasion, stemness, and accelerated cell apoptosis in triple-negative breast cancer cells. On the contrary, overexpression of FAM83D promoted the malignant behaviors. METTL3 could interact with FAM83D and mediate m6A modification of FAM838D. Moreover, METTL3 positively regulated FAM83D expression, and FAM83D overexpression could block the inhibition effects of MRTTL3 knockdown on the malignant behaviors. METTL3 knockdown decreased FAM83D expression to inhibit the Wnt/ß-catenin pathway. In addition, knockdown of FAM83D also showed the repressive effects on tumor growth in triple-negative breast cancer in vivo. These findings suggested that METTL3 could modulate FAM83D protein expression through m6A modification to aggravate triple-negative breast cancer progression via the Wnt/ß-catenin pathway.


Assuntos
Neoplasias de Mama Triplo Negativas , Humanos , Linhagem Celular Tumoral , Neoplasias de Mama Triplo Negativas/genética , Neoplasias de Mama Triplo Negativas/patologia , beta Catenina/genética , beta Catenina/metabolismo , Transformação Celular Neoplásica , Via de Sinalização Wnt , Metiltransferases/genética , Metiltransferases/metabolismo , Proteínas Associadas aos Microtúbulos/metabolismo , Proteínas de Ciclo Celular/metabolismo
19.
J Food Sci ; 89(1): 259-275, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37983838

RESUMO

This study explores the multifaceted attributes of black soldier fly larvae protein (BSFLP), focusing on its physicochemical, functional, and antioxidant properties. BSFLP is characterized by 16 amino acids, with a predominant random coil secondary structure revealed by circular dichroism spectra. Differential scanning calorimetry indicates a substantial thermal denaturation temperature of 97.63°C. The protein exhibits commendable solubility, emulsification, and foaming properties in alkaline and low-salt environments, albeit with reduced water-holding capacity and foam stability under elevated alkaline and high-temperature conditions. In vitro assessments demonstrate that BSFLP displays robust scavenging proficiency against 2,2-diphenyl-1-picrylhydrazyl, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), and hydroxyl radicals, with calculated EC50 values of 1.90 ± 0.57, 0.55 ± 0.01, and 1.14 ± 0.02 mg/mL, respectively, along with notable reducing capabilities. Results from in vivo antioxidant experiments reveal that BSFLP, administered at doses of 300 and 500 mg/kg, significantly enhances the activities of antioxidant enzymes (superoxide dismutase, catalase, and glutathione peroxidase) (p < 0.05) while simultaneously reducing malondialdehyde levels in both serum and tissues of d-galactose-induced oxidative stress in mice. Moreover, the protein effectively attenuates oxidative damage in liver and hippocampal tissues. These findings underscore the potential utility of BSFLP as a natural antioxidant source, with applications spanning the food, pharmaceutical, and cosmetic industries. PRACTICAL APPLICATION: Black soldier fly larvae protein emerges as an environmentally sustainable reservoir of natural antioxidants, holding significant promise for the food, pharmaceutical, and cosmetic sectors. Its advantageous amino acid composition, robust thermal resilience, and impressive functional attributes position it as a compelling subject for continued investigation and advancement in various applications.


Assuntos
Antioxidantes , Dípteros , Animais , Camundongos , Antioxidantes/química , Larva , Dípteros/metabolismo , Estresse Oxidativo , Extratos Vegetais/química
20.
Phys Rev Lett ; 131(20): 200202, 2023 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-38039483

RESUMO

The geometric phase is a fundamental quantity characterizing the holonomic feature of quantum systems. It is well known that the evolution operator of a quantum system undergoing a cyclic evolution can be simply written as the product of holonomic and dynamical components for the three special cases concerning the Berry phase, adiabatic non-Abelian geometric phase, and nonadiabatic Abelian geometric phase. However, for the most general case concerning the nonadiabatic non-Abelian geometric phase, how to separate the evolution operator into holonomic and dynamical components is a long-standing open problem. In this Letter, we solve this open problem. We show that the evolution operator of a quantum system can always be separated into the product of holonomy and dynamic operators. Based on it, we further derive a matrix representation of this separation formula for cyclic evolution, and give a necessary and sufficient condition for a general evolution being purely holonomic. Our finding is not only of theoretical interest itself, but also of vital importance for the application of quantum holonomy. It unifies the representations of all four types of evolution concerning the adiabatic/nonadiabatic Abelian/non-Abelian geometric phase, and provides a general approach to realizing purely holonomic evolution.

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