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1.
J Cell Physiol ; 2024 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-38515383

RESUMO

The poor prognosis of pancreatic ductal adenocarcinoma (PDAC) is attribute to the aggressive local invasion, distant metastasis and drug resistance of PDAC patients, which was strongly accelerated by epithelial-mesenchymal transition (EMT). In current study, we systematically investigate the role of ZNF263/RNF126 axis in the initiation of EMT in PDAC in vitro and vivo. ZNF263 is firstly identified as a novel transactivation factor of RNF126. Both ZNF263 and RNF126 were overexpressed in PDAC tissues, which were associated with multiple advanced clinical stages and poor prognosis of PDAC patients. ZNF263 overexpression promoted cell proliferation, drug resistance and EMT in vitro via activating RNF126 following by the upregulation of Cyclin D1, N-cad, and MMP9, and the downregulation of E-cad, p21, and p27. ZNF263 silencing contributed to the opposite phenotype. Mechanistically, ZNF263 transactivated RNF126 via binding to its promoter. Further investigations revealed that ZNF263 interacted with ZNF31 to coregulate the transcription of RNF126, which in turn promoted ubiquitination-mediated degradation of PTEN. The downregulation of PTEN activated AKT/Cyclin D1 and AKT/GSK-3ß/ß-catenin signaling, thereby promoting the malignant phenotype of PDAC. Finally, the coordination of ZNF263 and RNF126 promotes subcutaneous tumor size and distant liver metastasis in vivo. ZNF263, as an oncogene, promotes proliferation, drug resistance and EMT of PDAC through transactivating RNF126.

2.
Plant Divers ; 46(1): 78-90, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38343592

RESUMO

Endangered species generally have small populations with low genetic diversity and a high genetic load. Thuja sutchuenensis is an endangered conifer endemic to southwestern China. It was once considered extinct in the wild, but in 1999 was rediscovered. However, little is known about its genetic load. We collected 67 individuals from five wild, isolated T. sutchuenensis populations, and used 636,151 SNPs to analyze the level of genetic diversity and genetic load in T. sutchuenensis to delineate the conservation units of T. sutchuenensis, based on whole transcriptome sequencing data, as well as target capture sequencing data. We found that populations of T. sutchuenensis could be divided into three groups. These groups had low levels genetic diversity and were moderately genetically differentiated. Our findings also indicate that T. sutchuenensis suffered two severe bottlenecks around the Last Glaciation Period and Last Glacial Maximum. Among Thuja species, T. sutchuenensis presented the lowest genetic load and hence might have purged deleterious mutations efficiently through purifying selection. However, distribution of fitness effects analysis indicated a high extinction risk for T. sutchuenensis. Multiple lines of evidence identified three management units for T. sutchuenensis. Although T. sutchuenensis possesses a low genetic load, low genetic diversity, suboptimal fitness, and anthropogenic pressures all present an extinction risk for this rare conifer. This might also hold true for many endangered plant species in the mountains all over the world.

3.
Angew Chem Int Ed Engl ; 62(50): e202313447, 2023 Dec 11.
Artigo em Inglês | MEDLINE | ID: mdl-37885102

RESUMO

Ether-based electrolytes are considered as an ideal electrolyte system for sodium metal batteries (SMBs) due to their superior compatibility with the sodium metal anode (SMA). However, the selection principle of ether solvents and the impact on solid electrolyte interphase formation are still unclear. Herein, we systematically compare the chain ether-based electrolyte and understand the relationship between the solvation structure and the interphasial properties. The linear ether solvent molecules with different terminal group lengths demonstrate remarkably distinct solvation effects, thus leading to different electrochemical performance as well as deposition morphologies for SMBs. Computational calculations and comprehensive characterizations indicate that the terminal group length significantly regulates the electrolyte solvation structure and consequently influences the interfacial reaction mechanism of electrolytes on SMA. Cryogenic electron microscopy clearly reveals the difference in solid electrolyte interphase in various ether-based electrolytes. As a result, the 1,2-diethoxyethane-based electrolyte enables a high Coulombic efficiency of 99.9 %, which also realizes the stable cycling of Na||Na3 V2 (PO4 )3 full cell with a mass loading of ≈9 mg cm-2 over 500 cycles.

4.
Bioresour Technol ; 388: 129780, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37739185

RESUMO

In this study, ß-CD was used as a receptor to prepare three novel SDES, which were used to pretreat corn stalks for obtaining fluorescent lignin and promoting biomass pyrolytic saccharification. It was found that GA-residue had a high cellulose retention ratio (94.63%) and the highest lignin removal ratio (61.78%). Besides, the yield of carbohydrates in bio-oil was increased from 0.63% to 49.37%, and fluorescent lignin was prepared for explosion detection, fluorescent film, and information encryption. It was confirmed that the weak interaction between ß-CD and HBDs or dimer was mainly performed by hydrogen bond and van der Waals force. The minimum frontier orbital energy difference ΔEU (0.1976 a.u.) and high binding energy (-5456.71 kJ/mol) between molecules were calculated by DFT. Moreover, the mechanism of biomass pretreatment was explored. The green and efficient SDES developed in this study were of great significance for biomass pretreatment and efficient utilization of components.

5.
Biosci Rep ; 43(7)2023 07 26.
Artigo em Inglês | MEDLINE | ID: mdl-37440431

RESUMO

Sepsis contributes to life-threatening circulatory and organ dysfunction by dysregulating the host response to infection in critically ill patients. Treatment in an Intensive Care Unit (ICU) can improve the survival of patients who suffer from severe sepsis, but sepsis-associated acute kidney injury (SAKI) is still one of the main causes of death. The existing treatment is mainly focused on controlling microorganism induced infections by using drugs, such as ulinastatin and glucocorticoid. Also, it is well documented that kaempferol, a flavonoid derived from plant sources, improves septic mouse survival via anti-inflammatory response. However, the mechanism of anti-inflammatory response mediated by this flavonoid compound was little known. This study aims to demonstrate the mechanisms of inflammatory response regulated by kaempferol treatment during sepsis. We perform cecal ligation and puncture (CLP) injury as a sepsis mouse model and evaluate organ injury in sepsis. The molecular (qRT-PCR and Western Blot) and cellular profiling (IHC staining and Flow Cytometry) of the immune responses illustrates that kaempferol decreases the expression of adhesion molecular genes (ICAM-1 and VCAM-1) and monocyte chemoattractant protein-1 (MCP-1), thereby inhibiting F4/80+ macrophages infiltration in CLP-induced acute kidney injury. Our data suggested that kaempferol alleviates acute kidney injury via regulating F4/80+ macrophages infiltration in CLP-induced acute kidney injury.


Assuntos
Injúria Renal Aguda , Sepse , Animais , Camundongos , Quempferóis/uso terapêutico , Injúria Renal Aguda/tratamento farmacológico , Macrófagos/metabolismo , Anti-Inflamatórios/farmacologia , Sepse/complicações
6.
Angew Chem Int Ed Engl ; 62(31): e202304411, 2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37269185

RESUMO

The stable cycling of Mg-metal anodes is limited by several problems, including sluggish electrochemical kinetics and passivation at the Mg surface. In this study, we present a high-entropy electrolyte composed of lithium triflate (LiOTf) and trimethyl phosphate (TMP) co-added to magnesium bis(trifluoromethane sulfonyl)imide (Mg(TFSI)2 /1,2-dimethoxyethane (DME) to significantly improve the electrochemical performance of Mg-metal anodes. The as-formed high-entropy Mg2+ -2DME-OTf- -Li+ -DME-TMP solvation structure effectively reduced the Mg2+ -DME interaction in comparison with that observed in traditional Mg(TFSI)2 /DME electrolytes, thereby preventing the formation of insulating components on the Mg-metal anode and promoting its electrochemical kinetics and cycling stability. Comprehensive characterization revealed that the high-entropy solvation structure brought OTf- and TMP to the surface of the Mg-metal anode and promoted the formation of a Mg3 (PO4 )2 -rich interfacial layer, which is beneficial for enhancing Mg2+ conductivity. Consequently, the Mg-metal anode achieved excellent reversibility with a high Coulombic efficiency of 98 % and low voltage hysteresis. This study provides new insights into the design of electrolytes for Mg-metal batteries.

7.
Cancer Gene Ther ; 30(3): 472-480, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36460804

RESUMO

STMN2, as a key regulator in microtubule disassembly and dynamics, has recently been shown to participate in cancer development. However, the corresponding role in pancreatic ductal adenocarcinoma (PC), to our knowledge, has not been reported yet. In the current study, we systematically investigate the potential role of STMN2 in the progression of PC in vitro and vivo. Overexpression of STMN2 was prevalently observed in 81 human cases of PC tissues compared with that in the paired adjacent pancreas (54.3% vs 18.5%, P < 0.01), which was positively associated with multiple advanced clinical stages of PC patients (tumor size, T stage, lymph-node metastasis and the poor prognosis). Meanwhile, a close correlation between high STMN2 and cytoplasmic/nuclear ß-catenin expression (P = 0.007) was observed in PC tissues and cell lines. STMN2 overexpression induced EMT and cell proliferation in vitro via stimulating EMT-like cellular morphology, cell motility and proliferation, and the change of EMT (Snail1, E-cadherin and Vimentin) and Cyclin D1 signaling. However, XAV939 inhibited STMN2 overexpression-enhanced EMT and proliferation. Conversely, KY19382 reversed STMN2 silencing- inhibited EMT and cell proliferation in vitro. Furthermore, activated STMN2 and ß-catenin were co-localized in cytoplasm/nuclear in vitro. ß-catenin/TCF-mediated the transcription of STMN2 by the potential binding sites (TTCAAAG). Finally, STMN2 promoted subcutaneous tumor growth following the activation of EMT and Cyclin D1 signaling. STMN2 overexpression promotes the aggressive clinical stage of PC patients and promotes EMT and cell proliferation in vitro and vivo. ß-catenin/TCF-mediated the transcription of STMN2.


Assuntos
Neoplasias Pancreáticas , Estatmina , beta Catenina , Humanos , beta Catenina/genética , beta Catenina/metabolismo , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Ciclina D1 , Transição Epitelial-Mesenquimal/genética , Regulação Neoplásica da Expressão Gênica , Neoplasias Pancreáticas/patologia , Estatmina/genética , Estatmina/metabolismo , Via de Sinalização Wnt , Neoplasias Pancreáticas
8.
Chemistry ; 29(3): e202202380, 2023 Jan 12.
Artigo em Inglês | MEDLINE | ID: mdl-36210331

RESUMO

Sodium metal batteries (SMBs) have been widely studied owing to their relatively high energy density and abundant resources. However, they still need systematic improvement to fulfill the harsh operating conditions for their commercialization. In this review, we summarize the recent progress in SMBs in terms of sodium anode modification, electrolyte exploration, and cathode design. Firstly, we give an overview of the current challenges facing Na metal anodes and the corresponding solutions. Then, the traditional liquid electrolytes and the prospective solid electrolytes for SMBs are summarized. In addition, insertion- and conversion-type cathode materials are introduced. Finally, an outlook for the future of practical SMBs is provided.

9.
Oral Dis ; 29(2): 469-482, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34085359

RESUMO

OBJECTIVES: Tongue squamous cell carcinoma (TSCC) is the most common malignancy in oral cancer. Long noncoding RNAs (lncRNAs) are important regulators in cancer biology. In our present study, we investigated a novel lncRNA IGF-like family member 2 antisense RNA 1 (IGFL2-AS1) in TSCC. METHODS: RT-qPCR analyzed IGFL2-AS1 expression in TSCC cells. Functional assays assessed the impact of IGFL2-AS1 on TSCC cell proliferation, migration, and invasion. Western blot analyzed the protein levels of EMT-related markers. Mechanism assays analyzed the regulatory mechanism of IGFL2-AS1 in TSCC cells. In-vivo experiments were conducted to prove the role of IGFL2-AS1 in TSCC progression. RESULTS: IGFL2-AS1 was significantly up-regulated in TSCC cells and tissues, and IGFL2-AS1 knockdown inhibited cell proliferation, migration, invasion and EMT in TSCC. Moreover, IGFL2-AS1 functioned as a competing endogenous RNA (ceRNA) to sponge miR-1224-5p and thereby modulated SATB homeobox 1 (SATB1) expression. Additionally, SATB1 activated the Wnt/ß-catenin signaling pathway in TSCC cells and IGFL2-AS1 regulated the Wnt/ß-catenin signaling pathway and TSCC progression via elevating SATB1 expression. CONCLUSIONS: The data revealed that IGFL2-AS1 played a cancer promoting role in TSCC and may aid in exploring a brand new biomarker that might contribute to TSCC treatment.


Assuntos
Carcinoma de Células Escamosas , Proteínas de Ligação à Região de Interação com a Matriz , MicroRNAs , RNA Longo não Codificante , Neoplasias da Língua , Humanos , Neoplasias da Língua/patologia , Carcinoma de Células Escamosas/patologia , Via de Sinalização Wnt/genética , Proteínas de Ligação à Região de Interação com a Matriz/genética , Proteínas de Ligação à Região de Interação com a Matriz/metabolismo , Linhagem Celular Tumoral , MicroRNAs/genética , MicroRNAs/metabolismo , Proliferação de Células/genética , Movimento Celular/genética , Língua , RNA Longo não Codificante/genética , Regulação Neoplásica da Expressão Gênica
10.
Immunology ; 168(1): 184-197, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36057099

RESUMO

Given increased acceptance of the CoronaVac, there is an unmet need to assess the safety and immunogenic changes of CoronaVac in patients with rheumatic diseases (RD). Here we comprehensively analysed humoral and cellular responses in patient with RD after a three-dose immunization regimen of CoronaVac. RD patients with stable condition and/or low disease activity (n = 40) or healthy controls (n = 40) were assigned in a 1:1 ratio to receive CoronaVac (Sinovac). The prevalence of anti-receptor binding domain (RBD) antibodies and neutralizing antibodies was similar between healthy control (HC) and RD patients after the second and the third vaccination. However, the titers of anti-RBD IgG and neutralizing antibodies were significantly lower in RD patients compared to HCs (p < 0.05), which was associated with an impaired T follicular helper (Tfh) cell response. Among RD patients, those who generated an antibody response displayed a significantly higher Tfh cells compared to those who failed after the first and the second vaccination (p < 0.05). Interestingly, subjects with a negative serological response displayed a similar Tfh memory response to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-derived peptides as their anti-RBD IgG positive counterpart, and all (4/4) of the non-responders in HCs, and 62.5% (5/8) of the non-responders in patients with RD displayed a positive serological response following the third dose. No serious adverse events were observed. In conclusion, our findings support SARS-CoV-2 vaccination in patients with RD with stable and/or low disease activity. The impaired ability in generating vaccine-specific antibodies in patients with RD was associated with a reduction in Tfh cells induction. The window of vaccination times still needs to be explored in future studies. Clinical trial registration: This trial was registered with ChiCTR2100049138.


Assuntos
COVID-19 , Doenças Reumáticas , Humanos , Anticorpos Neutralizantes , Anticorpos Antivirais , Formação de Anticorpos , Vacinas contra COVID-19 , Imunização , Imunoglobulina G , SARS-CoV-2 , Células T Auxiliares Foliculares , Vacinação , Estudos de Casos e Controles
11.
Int J Nanomedicine ; 17: 6527-6550, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36575698

RESUMO

Exosomes are small vesicles secreted by living cells, with a typical lipid bilayer structure. They carry a variety of proteins, lipids, RNA and other important information, play an important role in the transmission of substances and information between cells, and gradually become a marker for early diagnosis of many diseases and an important tool in drug delivery system. Immune cells are an important part of tumor microenvironment, and they can affect tumor progression by secreting a variety of immunoreactive substances. This review focuses on the effects of various immune cell-derived exosomes on tumor cells, different immune cells and other stromal cells in tumor microenvironment. Exosomes derived from different immune cells can not only reshape a pro-inflammatory microenvironment to inhibit tumor progression, but also promote tumor progression by inhibiting the killing effect of NK cells, CD8+T cells and other cells or promoting tumor cells and immunosuppressive immune cells. In addition, we also discussed that some exosomes derived from immune cells (such as DC, M1 macrophages and neutrophils) play a tumor inhibitory role after being engineered.


Assuntos
Exossomos , Neoplasias , Humanos , Exossomos/metabolismo , Microambiente Tumoral , Neoplasias/metabolismo , Macrófagos/patologia , Células Estromais/patologia
12.
J Mol Med (Berl) ; 100(12): 1771-1785, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36352154

RESUMO

Methyltransferase-like 14 (METTL14) mediates N6-methyladenosine (m6A) modification to influence cancer progression. This study aims to determine the mechanism of METTL14-mediated m6A in non-small cell lung cancer (NSCLC) cell resistance to cisplatin (DDP). METTL14, miR-19a-5p, RBM24, and AXIN1 expressions in NSCLC tissues/cells were determined. DDP-resistant cell line was obtained, followed by the interference of METTL14 expression. NSCLC cells were treated with DDP to establish a drug-resistant cell line, and METTL14 expression in cells was intervened. The IC50 of NSCLC cells to DDP was measured by CCK-8 assay. NSCLC cell proliferation and apoptosis were observed by clone formation assay and flow cytometry. The content of m6A in total RNA in tissues and cells of NSCLC patients was detected using m6A Methylation Quantification Kit. The expressions of DGCR8-bound pri-miR-19a and m6A-modified pri-miR-19a were detected. The binding relationships between miR-19a-5p and RBM24 and RBM24 and AXIN1 were validated using dual-luciferase assay and RNA immunoprecipitation. Finally, mouse xenograft tumor model was established to verify the role of METTL14 in vivo. METTL14 was highly expressed in NSCLC. METTL14 silencing diminished IC50 to DDP, repressed NSCLC cell proliferation, and enhanced apoptosis. METTL14-mediated m6A induced recognition and processing of pri-miR-19a by DGCR8, thus promoting the transition of pri-miR-19a to miR-19a-5p, repressing RBM24 expression, reducing the binding of RBM24 and AXIN1, and suppressing AXIN1 transcription. miR-19a-5p overexpression or RBM24/AXIN1 silencing abolished the effect of METTL14 silencing on NSCLC cell resistance to DDP. METTL14 silencing in vivo enhanced the suppressive role of DDP to tumor growth. Collectively, METTL14-mediated m6A modification facilitated NSCLC cell resistance to DDP via miR-19a-5p/RBM24/AXIN1 axis. KEY MESSAGES: • METTL14 is highly expressed NSCLC and further increased in DDP-resistant cells. • METTL14 silencing attenuates DDP resistance of NSCLC cells. • METTL14 promotes the nature of pri-miR-19a by upregulating pri-miR-19a m6A level. • miR-19a-5p targets RBM24, thus reducing the binding of RBM24 and AXIN1 and inhibiting AXIN1 transcription. • METTL14 silencing in vivo enhances the suppressive role of DDP to tumor growth.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Metiltransferases , MicroRNAs , Animais , Humanos , Camundongos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/metabolismo , Linhagem Celular Tumoral , Proliferação de Células , Cisplatino/farmacologia , Cisplatino/uso terapêutico , Resistencia a Medicamentos Antineoplásicos/genética , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/metabolismo , Metiltransferases/genética , Metiltransferases/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Proteínas de Ligação a RNA/genética
13.
Annu Int Conf IEEE Eng Med Biol Soc ; 2022: 2684-2688, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-36086197

RESUMO

Over the past few decades, the world has faced the huge demographic change in the aging population, which makes significant challenges in healthcare systems. The increasing older adult population along with the current health workforce shortage creates a struggling situation for current facilities and personnel to meet the demand. To tackle this situation, cloud computing is a fast-growing area in digital healthcare and it allows to settle up a modern distributed system environment, capable of scaling to tens of thousands of self healing multitenant nodes for healthcare applications. In addition, cloud native architecture is recently getting focused as an ideal structure for multi-node based healthcare monitoring system due to its high scalability, low latency, and rapid and stable maintainability. In this study, we proposed a cloud native-based rapid, robust, and productive digital healthcare platform which allows to manage and care for a large number of patient groups. To validate our platform, we simulated our Cloud Nativebased Healthcare Monitoring Platform (CN-HMP) with real-time setup and evaluated the performance in terms of request response time, data packets delivery, and end-to-end latency. We found it showing less than 0.1 ms response time in at least 92.5% of total requests up to 3K requests, and no data packet loss along with more than 28% of total data packets with no latency and only ≈ 0.6% of those with maximum latency (3 ms) in 24-hour observation. Clinical Relevance- This study and relevant experiment demonstrate the suitability of the CN-HMP to support providers and nurses for elderly patients healthcare with regular monitoring in older adult facilities.


Assuntos
Computação em Nuvem , Atenção à Saúde , Idoso , Redes de Comunicação de Computadores , Eletrocardiografia , Instalações de Saúde , Humanos
14.
Bioresour Technol ; 363: 127989, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36126848

RESUMO

In this study, the hydrothermal and photocatalytic synergistic pretreatment for improving the full component utilization of corn stalk based on lignin first biorefining was employed to generate carbohydrates and obtain modified lignin. The results showed that the highest lignin removal ratio (40.70 %) and cellulose retention ratio (92.64 %) were obtained due to the smallest energy gap (6.05 eV) and the largest penetration distance (1.73 Å) between GVL and the lignin. And the yield of carbohydrates increased from 1.95 % to 58.17 % after hydrothermal pretreatment at 180 ℃. Furthermore, the modified lignin enhanced the flocculation effect, resulting in the increase of the removal of safranine-T by 6 times. In addition, the chemical and physical properties of modified lignin were studied and the mechanism of photocatalysis modification was explored. The research provides a new pretreatment method for the utilization of biomass and simultaneously achieves carbohydrate enrichment in bio-oil and purification of dye wastewater.


Assuntos
Lignina , Zea mays , Biomassa , Celulose/química , Hidrólise , Lignina/química , Águas Residuárias , Zea mays/química
15.
Materials (Basel) ; 15(12)2022 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-35744111

RESUMO

Post-bond heat treatment (PBHT) is an effective way to improve the bonding quality of a brazed joint. Herein, brazing of a nickel-based single crystal superalloy is carried out using a Ni-Cr-Co-B-Si-Al-Ti-W-Mo filler alloy, and the microstructure and creep property of the brazed joint are systematically investigated using scanning electron microscopy (SEM), Thermo-Calc software, an electron probe micro-analyzer (EPMA), X-ray diffractometer, confocal scanning laser microscope (CSLM), and transmission electron microscopy (TEM). The results reveal that the as-prepared joint only consists of an isothermally solidified zone (ISZ) and an athermally solidified zone (ASZ), where the cubic γ' phase is observed in the ISZ, and skeleton-like M3B2, γ + γ' eutectic and reticular G phases are observed in the ASZ. Furthermore, the γ + γ' eutectic and G phases disappear and the M3B2 alters from a skeleton-like to block-like shape in the ASZ after PBHT. Meanwhile, some lath-like M3B2 phases are precipitated at the edge of the ISZ and several M3B2 phases are precipitated in the base metal, forming a new zone in the brazed joint, namely at the diffusion affected zone (DAZ). Owing to the removal of low melting point eutectics from the as-prepared joint, the creep life also increases from 188 h to 243 h after PBHT. The current work provides a method for the optimization of brazed joints based on the Ni-based single crystal superalloy.

16.
Front Cell Dev Biol ; 10: 884412, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35646942

RESUMO

Reactive oxygen species (ROS) play a crucial role in the regulation of tumor occurrence and development. As a main source of ROS, NADPH oxidases are key enzymes that mediate electron transport within intracellular membranes. Of the NOX members that have been reported to be dysregulated in a wide variety of tumors, NOX4 is the member to be most frequently expressed. Numerous studies have elucidated that NOX4 gets involved in the regulation of tumor proliferation, metastasis, therapy resistance, tumor-stromal interaction and dysregulated tumor metabolism. In this review, we primarily discussed the biological function of NOX4 in tumorigenesis and progression of multiple cancer models, including its role in activating oncogenic signaling pathways, rewiring the metabolic phenotype and mediating immune response. Besides, the development of NOX4 inhibitors has also been unraveled. Herein, we discussed the interplay between NOX4 and tumorigenesis, proposing NOX4 as a promising therapeutic target waiting for further exploration.

17.
J Int Med Res ; 50(6): 3000605221106410, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35701892

RESUMO

OBJECTIVE: To elucidate the mechanism underlying how Ureaplasma urealyticum (UU) affects sperm quality and identify a therapeutic target. METHODS: In this prospective observational study, the differences in and relationships among semen volume, pH, viscosity, liquefaction time, sperm concentration, sperm motility [progressive motility (PR)], and seminal polymorphonuclear (PMN) elastase were analyzed in 198 normal semen samples (control group) and 198 UU-infected semen samples (observation group). The UU-infected samples were treated and the above parameters were compared between the two groups. RESULTS: The semen volume, viscosity, liquefaction time, and seminal PMN elastase were significantly higher in the observation than control group, but the pH and PR were significantly lower. In the observation group, the pH and PR were significantly higher after than before treatment, whereas the semen volume, PMN elastase, viscosity, and liquefaction time were lower. UU was closely related to semen volume, pH, viscosity, liquefaction time, sperm motility (PR), and PMN elastase. PMN elastase had significant negative effects on semen pH and sperm motility (PR) but positive effects on viscosity and liquefaction time. CONCLUSION: UU might induce PMN elastase to increase the liquefaction time and viscosity of semen, eventually decreasing PR. PMN elastase might be a therapeutic target of UU.


Assuntos
Infertilidade Masculina , Infecções por Ureaplasma , Humanos , Elastase de Leucócito , Masculino , Sêmen , Motilidade dos Espermatozoides , Espermatozoides , Ureaplasma urealyticum
18.
Materials (Basel) ; 15(8)2022 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-35454417

RESUMO

The surface morphology and chemical states of W-2%ThO2 thermionic cathode during vacuum high-temperature treatment were investigated in this research. The W-2%ThO2 thermionic cathode was prepared by a solid-liquid doping method combined with high-temperature sintering. The morphology and distribution of thorium oxide were observed using a transmission electron microscope and scanning electron microscope. The chemical states of elements at different temperatures were analyzed by X-ray photoelectron spectroscopy. Results indicate that the surface morphology and chemical form of the alloy evolve with the increase of temperature. The matrix had a lamellar structure at low temperatures, and the surface was relatively flat. The samples were heated to 500 °C, 1100 °C, and 1300 °C for 1 h. During the heating process, thorium oxide changed from granular to spherical, and the matrix was recrystallized. As the heating temperature rises, diffusion channels appear inside the cathode. As the temperature increases, the high-priced tungsten gradually decreases, and the zero-valent tungsten content increases. The adsorbed oxygen left the cathode surface, and the lattice oxygen increased. The surface oxygen content decreased, and the thorium and tungsten content increased.

19.
Front Genet ; 13: 813823, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35480322

RESUMO

Background: Laryngeal cancer is more common in middle-aged and older men. We conducted an association analysis between ZNF208 polymorphisms and laryngeal cancer (LC) risk in the Northwestern Chinese Han male. Methods: A total of 352 subjects (172 LC patients and 180 controls) were involved in this study. Agena MassARRAY was used to determine the genotypes. Unconditional logistic regression analysis was performed to explore the relevance. Results: Two SNPs were associated with the risk of LC: rs8103163, OR = 1.41, p = 0.043; rs7248488, OR = 1.45, p = 0.025. Furthermore, rs8103163 was associated with an increased risk of LC under a log-additive model (OR = 1.40, p = 0.042), and rs7248488 was related to a higher risk of LC under a recessive model (OR = 2.33, p = 0.025) and a log-additive model (OR = 1.44, p = 0.026). Conclusions: We first demonstrated that the rs8103163 A allele and the rs7248488 A allele in ZNF208 create susceptibility to laryngeal cancer in the Northwestern Chinese Han male.

20.
Endocrine ; 75(1): 178-184, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34292486

RESUMO

BACKGROUND: The incidence of thyroid cancer is rising rapidly in China, but there are few studies on the risk factors of thyroid cancer in the Chinese Han population. METHODS: We performed this case-control study of 510 patients and 509 controls to for determine the linkage of VAV3 variants (rs17019602, rs7521681, rs4915076, and rs1777451) with thyroid cancer susceptibility by computing the odds ratio (OR) and 95% confidence intervals (CI). Multi-factor dimension reduction (MDR) analysis was conducted to assess interaction of VAV3 genetic variants. RESULTS: We found that rs7521681 was remarkably related to a higher risk of thyroid cancer (OR = 1.74, p = 0.012), whereas rs4915076 (OR = 0.66, p = 0.001) significantly decreased thyroid cancer susceptibility. Stratified analyses showed that rs4915076 had a protective role in thyroid cancer in both ages >45 years (OR = 0.70, p = 0.017) and age ≤45 years (OR = 0.63, p = 0.007). Rs17019602 could increase the susceptibility of thyroid cancer in men (OR = 4.76, p = 0.049). Rs7521681 was related to an increased risk of thyroid cancer in women (OR = 1.97, p = 0.012). Rs4915076 could protect individuals from thyroid cancer both in men (OR = 0.60, p = 0.031) and women (OR = 0.68, p = 0.010). Moreover, rs4915076 was the best single-locus model to predict thyroid cancer. Interestingly, the interaction model of rs17019602, rs7521681, rs4915076, rs1777451, and age was a candidate gene-environment model. CONCLUSION: Our results indicated VAV3 variants were associated with thyroid cancer, which provides a new sight into etiology of thyroid cancer.


Assuntos
Predisposição Genética para Doença , Neoplasias da Glândula Tireoide , Adulto , Alelos , Estudos de Casos e Controles , China/epidemiologia , Feminino , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , Proteínas Proto-Oncogênicas c-vav/genética , Neoplasias da Glândula Tireoide/epidemiologia , Neoplasias da Glândula Tireoide/genética
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