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1.
J Cell Mol Med ; 28(12): e18455, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38898772

RESUMO

Cancer-related fatigue (CRF) significantly impacts the quality of life of cancer patients. This study investigates the therapeutic potential of Shenqi Fuzheng injection (SFI) in managing CRF, focusing on its mechanistic action in skeletal muscle. We utilized a CRF mouse model to examine the effects of SFI on physical endurance, monitoring activity levels, swimming times and rest periods. Proteomic analysis of the gastrocnemius muscle was performed using isobaric tags and liquid chromatography-tandem mass spectrometry to map the muscle proteome changes post-SFI treatment. Mitochondrial function in skeletal muscle was assessed via ATP bioluminescence assay. Furthermore, the regulatory role of the hypoxia inducible factor 1 subunit alpha (HIF-1α) signalling pathway in mediating SFI's effects was explored through western blotting. In CRF-induced C2C12 myoblasts, we evaluated cell viability (CCK-8 assay), apoptosis (flow cytometry) and mitophagy (electron microscopy). The study also employed pulldown, luciferase and chromatin immunoprecipitation assays to elucidate the molecular mechanisms underlying SFI's action, particularly focusing on the transcriptional regulation of PINK1 through HIF-1α binding at the PINK1 promoter region. Our findings reveal that SFI enhances physical mobility, reduces fatigue symptoms and exerts protective effects on skeletal muscles by mitigating mitochondrial damage and augmenting antioxidative responses. SFI promotes cell viability and induces mitophagy while decreasing apoptosis, primarily through the modulation of HIF-1α, PINK1 and p62 proteins. These results underscore SFI's efficacy in enhancing mitochondrial autophagy, thereby offering a promising approach for ameliorating CRF. The study not only provides insight into SFI's potential therapeutic mechanisms but also establishes a foundation for further exploration of SFI interventions in CRF management.


Assuntos
Medicamentos de Ervas Chinesas , Fadiga , Subunidade alfa do Fator 1 Induzível por Hipóxia , Mitofagia , Músculo Esquelético , Neoplasias , Ubiquitinação , Animais , Mitofagia/efeitos dos fármacos , Medicamentos de Ervas Chinesas/farmacologia , Músculo Esquelético/metabolismo , Músculo Esquelético/efeitos dos fármacos , Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo , Camundongos , Ubiquitinação/efeitos dos fármacos , Neoplasias/metabolismo , Neoplasias/complicações , Neoplasias/tratamento farmacológico , Neoplasias/patologia , Fadiga/tratamento farmacológico , Fadiga/metabolismo , Fadiga/etiologia , Masculino , Apoptose/efeitos dos fármacos , Humanos , Proteômica/métodos , Modelos Animais de Doenças , Linhagem Celular
2.
Anal Chem ; 2024 Sep 22.
Artigo em Inglês | MEDLINE | ID: mdl-39307967

RESUMO

Methyl iodide (CH3I) gas as a toxic gas causes great harm to organisms due to its high volatility and high reactivity with biological nucleophiles. Unfortunately, the sensing and detection of CH3I gas are challenging because of the diffusive nature of the gases and its low concentrations in the environment. Herein, we have developed a fast, green, and sensitive CH3I gas visual sensing method based on the capture technology of toxic gases by natural deep eutectic solvents (NADESs) coupled to the halide rapid exchange capability of perovskite nanocrystals (PNCs). In this strategy, NADESs are used as an absorption solution to adsorb gaseous CH3I, while simultaneously exposing I- through the action of the nucleophilic reagent; then, CsPbBr3 PNCs were synthesized in NADESs and used as sensing material to achieve I- exchange. Benefiting from the capture and enrichment of CH3I gas, the sensitivity of the gas sensor was highly improved. The sensor exhibited the lowest detection limit (limits of detection) of 164.15 µmol/m3, below the minimum safe level for human inhalation, which is 200 µmol/m3. This breakthrough offers greater possibilities for the quantitative detection of CH3I gas.

3.
Cancer Invest ; 42(6): 527-537, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38965994

RESUMO

Despite the emergence of various treatment strategies for rectal cancer based on neoadjuvant chemoradiotherapy, there is currently a lack of reliable biomarkers to determine which patients will respond well to neoadjuvant chemoradiotherapy. Through collecting hematological and biochemical parameters data of patients prior to receiving neoadjuvant chemoradiotherapy, we evaluated the predictive value of systemic inflammatory indices for pathological response and prognosis in rectal cancer patients. We found that baseline GRIm-Score was an independent predictor for MPR in rectal cancer patients. However, no association was observed between several commonly systemic inflammation indices and long-term outcome.


Assuntos
Terapia Neoadjuvante , Neoplasias Retais , Humanos , Neoplasias Retais/patologia , Neoplasias Retais/terapia , Neoplasias Retais/imunologia , Masculino , Feminino , Pessoa de Meia-Idade , Terapia Neoadjuvante/métodos , Idoso , Quimioembolização Terapêutica/métodos , Prognóstico , Resultado do Tratamento , Adulto , Quimiorradioterapia/métodos
4.
BMC Cancer ; 24(1): 41, 2024 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-38183079

RESUMO

BACKGROUND: Obstructive sleep apnea (OSA) is associated with increased risk of lung cancer mortality. Nevertheless, little is known about the underlying molecular mechanisms. This research aimed to investigate differentially expressed genes (DEGs) and explore their function in Lewis lung carcinoma (LLC)-bearing mice exposed to chronic intermittent hypoxia (CIH) by transcriptome sequencing. METHODS: Lung cancer tissues in LLC-bearing mice exposed to CIH or normoxia were subjected for transcriptome sequencing to examine DEGs. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses were employed to explore the function of DEGs. To evaluate the prognostic value of DEGs, the Kaplan-Meier survival analysis in combination with Cox proportional hazard model were applied based on The Cancer Genome Atlas. RESULTS: A total of 388 genes with 207 up-regulated and 181 down-regulated genes were differentially expressed between the CIH and normoxia control groups. Bioinformatics analysis revealed that the DEGs were related to various signaling pathways such as chemokine signaling pathway, IL-17 signaling pathway, TGF-ß signaling pathway, transcriptional misregulation in cancer, natural killer cell mediated cytotoxicity, PPAR signaling pathway. In addition, the DEGs including APOL1, ETFB, KLK8, PPP1R3G, PRL, SPTA1, PLA2G3, PCP4L1, NINJ2, MIR186, and KLRG1 were proven to be significantly correlated with poorer overall survival in lung adenocarcinoma. CONCLUSIONS: CIH caused a significant change of gene expression profiling in LLC-bearing mice. The DEGs were found to be involved in various physiological and pathological processes and correlated with poorer prognosis in lung cancer.


Assuntos
Adenocarcinoma de Pulmão , Carcinoma Pulmonar de Lewis , Neoplasias Pulmonares , Animais , Camundongos , Neoplasias Pulmonares/genética , Transcriptoma , Processos Neoplásicos , Hipóxia/genética
5.
Glia ; 71(12): 2850-2865, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37572007

RESUMO

Parkinson's disease (PD) is a common neurodegenerative disease in elderly people, which is characterized by motor disabilities in PD patients. Nav1.6 is the most abundant subtype of voltage-gated sodium channels (VGSCs) in the brain of adult mammals and rodents. Here we investigated the role of Nav1.6 in the external globus pallidus (GP) involved in the pathogenesis of motor deficits in unilateral 6-OHDA(6-hydroxydopamine)lesioned rats. The results show that Nav1.6 is dramatically increased in reactive astrocytes of the ipsilateral GP in the middle stage, but not different from the control rats in the later stage of the pathological process in 6-OHDA lesioned rats. Furthermore, the down-regulation of Nav1.6 expression in the ipsilateral GP can significantly improve motor deficits in 6-OHDA lesioned rats in the middle stage of the pathological process. The electrophysiological experiments show that the down-regulation of Nav1.6 expression in the ipsilateral GP significantly decreases the abnormal high synchronization between the ipsilateral M1 (the primary motor cortex) and GP in 6-OHDA lesioned rats. Ca2+ imaging reveals that the down-regulation of Nav1.6 expression reduces the intracellular concentration of Ca2+ ([Ca2+ ]i) in primary cultured astrocytes. These findings suggest that the increased Nav1.6 expression of reactive astrocytes in the GP play an important role in the pathogenesis of motor dysfunction in the middle stage in 6-OHDA lesioned rats, which may participate in astrocyte-neuron communication by regulating [Ca2+ ]i of astrocytes, thereby contributing to the formation of abnormal electrical signals of the basal ganglia (BG) in 6-OHDA lesioned rats.


Assuntos
Canal de Sódio Disparado por Voltagem NAV1.6 , Doença de Parkinson , Animais , Ratos , Astrócitos/metabolismo , Modelos Animais de Doenças , Globo Pálido/metabolismo , Mamíferos , Canal de Sódio Disparado por Voltagem NAV1.6/genética , Canal de Sódio Disparado por Voltagem NAV1.6/metabolismo , Oxidopamina/toxicidade , Doença de Parkinson/metabolismo , Ratos Sprague-Dawley
6.
Org Biomol Chem ; 21(33): 6675-6680, 2023 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-37540068

RESUMO

An efficient N-heterocyclic carbene (NHC)-catalyzed enantioselective [3 + 3] annulation of 2-bromoenals with 2-amino-1H-indoles has been developed. A series of functionalized 2-aryl-2,3-dihydropyrimido[1,2-a]indol-4(1H)-ones were synthesized using NHCs as the catalyst in good yields with high to excellent enantioselectivities.

7.
Sensors (Basel) ; 23(22)2023 Nov 16.
Artigo em Inglês | MEDLINE | ID: mdl-38005592

RESUMO

Surface urban heat islands (SUHIs) are mostly an urban ecological issue. There is a growing demand for the quantification of the SUHI effect, and for its optimization to mitigate the increasing possible hazards caused by SUHI. Satellite-derived land surface temperature (LST) is an important indicator for quantifying SUHIs with frequent coverage. Current LST data with high spatiotemporal resolution is still lacking due to no single satellite sensor that can resolve the trade-off between spatial and temporal resolutions and this greatly limits its applications. To address this issue, we propose a multiscale geographically weighted regression (MGWR) coupling the comprehensive, flexible, spatiotemporal data fusion (CFSDAF) method to generate a high-spatiotemporal-resolution LST dataset. We then analyzed the SUHI intensity (SUHII) in Chengdu City, a typical cloudy and rainy city in China, from 2002 to 2022. Finally, we selected thirteen potential driving factors of SUHIs and analyzed the relation between these thirteen influential drivers and SUHIIs. Results show that: (1) an MGWR outperforms classic methods for downscaling LST, namely geographically weighted regression (GWR) and thermal image sharpening (TsHARP); (2) compared to classic spatiotemporal fusion methods, our method produces more accurate predicted LST images (R2, RMSE, AAD values were in the range of 0.8103 to 0.9476, 1.0601 to 1.4974, 0.8455 to 1.3380); (3) the average summer daytime SUHII increased form 2.08 °C (suburban area as 50% of the urban area) and 2.32 °C (suburban area as 100% of the urban area) in 2002 to 4.93 °C and 5.07 °C, respectively, in 2022 over Chengdu City; and (4) the anthropogenic activity drivers have a higher relative influence on SUHII than other drivers. Therefore, anthropogenic activity driving factors should be considered with CO2 emissions and land use changes for urban planning to mitigate the SUHI effect.

8.
Mol Cell Probes ; 46: 101415, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31228519

RESUMO

AIMS: Vascular endothelial growth factor (VEGF) can promote cell division, proliferation and migration. In this study, we aimed to investigate roles of ultrasound-mediated destruction of VEGF-targeted and paclitaxel (PTX)-loaded lipid microbubbles (VTPLLM + US) in human breast cancer cells. METHODS: The activity of MCF-7 cells was determined by cell counting Kit-8. Flow cytometry was performed to detect the cells apoptosis and cell cycle. The expression of cell cycle-associated proteins, matrix metalloprotein-9 (MMP-9), VEGF and apoptosis-associated proteins were detected by qRT-PCR and Western blot. RESULTS: The obtained data suggested that VTPLLM + US promoted the G1 phase cell cycle arrest and suppressed the viability of MCF-7 cells. We also found that VTPLLM + US accelerated cells apoptosis. Cell cycle-associated proteins and VEGF expression were modulated by VTPLLM + US. Moreover, VTPLLM + US was found to regulate the expression levels of apoptosis-associated proteins in MCF-7 cells. Our findings suggested that VTPLLM + US suppressed the proliferation and accelerated the apoptosis of MCF-7 cells through regulating VEGF expression. CONCLUSIONS: The potential effects of VTPLLM + US on apoptosis of MCF-7 cells suggest that applying VTPLLM + US might be an effective strategy in breast cancer therapies.


Assuntos
Neoplasias da Mama/tratamento farmacológico , Proliferação de Células/efeitos dos fármacos , Paclitaxel/farmacologia , Fator A de Crescimento do Endotélio Vascular/genética , Apoptose/efeitos dos fármacos , Apoptose/efeitos da radiação , Proteínas Reguladoras de Apoptose/genética , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Proliferação de Células/efeitos da radiação , Feminino , Citometria de Fluxo , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Regulação Neoplásica da Expressão Gênica/efeitos da radiação , Humanos , Células MCF-7 , Metaloproteinase 9 da Matriz/genética , Microbolhas , Ondas Ultrassônicas , Fator A de Crescimento do Endotélio Vascular/efeitos da radiação
9.
Zhonghua Gan Zang Bing Za Zhi ; 23(7): 517-21, 2015 Jul.
Artigo em Zh | MEDLINE | ID: mdl-26398843

RESUMO

OBJECTIVE: To evaluate the characteristics of primary hepatic carcinoma (PHC) teed by the right renal capsular artery(RRCA) and to assess the technical success rate,tumor response and complications in patients treated with transcatheter arterial chemoembolization (TACE) via the RRCA with or without other extrahepatic arteries and/or intrahepatic arteries. METHODS: From July 2010 to February 2014,23 patients were treated by TACE via the RRCA. We evaluate the characteristics of tumor, the blood supply situation of RRCA and the technical success rate, complications and tumor response of TACE via the RRCA. RESULTS: Tumor size was 90.60+/-48.23 mm. Of the 23 rumors,3 were located in segment V, 11 in segment VI and 9 in segment VII.8 cases were found to have RRCA supply at the first TACE session. The technical success rate was 100%.No severe complication occurred in 23 patients. Among the 23 patients, CR, PR, SD and PD were achieved in 3(13.0%), 10(43.5%), 2(8.7%), 8(34.8%) respectively. The objective response rate was 56.5%. The overall cumulative 6 month, 1-3-and 5-year survival rates and the median survival time were 82.6%, 52.2%,21.7%, 17.4% and 16.8 months, respectively. CONCLUSION: RRCA can participate in tumor blood supply when it located in the right hepatic lobe and with a larger diameter, or it was small but located in the bare area.Superselective intubation of RRCA with microcatheter and precise TACE via right renal capsular artery is safe ,effective and feasible.


Assuntos
Carcinoma Hepatocelular , Quimioembolização Terapêutica , Neoplasias Hepáticas , Humanos , Artéria Renal , Taxa de Sobrevida
10.
Am J Clin Oncol ; 47(3): 115-121, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-37981702

RESUMO

BACKGROUND: Concurrent chemoradiotherapy based on hyperfractionated accelerated radiotherapy (HART) is the first-line recommended regimen for the treatment of small-cell lung cancer (SCLC). However, Stereotactic Body Radiotherapy (SBRT) is also regarded as an effective treatment for limited-stage (LS) SCLC, and the efficacy and safety of HART versus SBRT stay controversial. METHODS: In this study, 188 LS-SCLC patients were retrospectively divided into two groups receiving chemotherapy combined with either HART or SBRT. In HART group, patients received 4500 cGy in 30 fractions, administered twice daily for 3 weeks. Whereas in the SBRT group, a total radiation dose of 4000-4500 cGy was delivered in 10 fractions over 2 weeks. Thirty-three pairs of patients were finally included for next analysis. RESULTS: The estimated objective response rates were 63.6 % (21/33) and 78.8 % (26/33) in HART group and SBRT group, respectively (P = 0.269). Furthermore, there was no significant difference between HART and SBRT groups in overall survival (26 months vs. 29 months, P = 0.362) and progression free survival (11 months vs. 15 months, P = 0.223). As for the adverse events, toxicity of both groups is similar and slight that no grade 4 event was observed. Grade 3 pneumonitis cases were all occurred in the HART group (9.1%, 3/33, P = 0.238), and grade 3 esophagitis cases were all occurred in the SBRT group (6.1%, 2/33, P = 0.492). CONCLUSION: Compared with HART, SBRT could be another effective treatment with satisfactory safety for the concurrent chemoradiotherapy in patients with LS-SCLC.


Assuntos
Neoplasias Pulmonares , Radiocirurgia , Carcinoma de Pequenas Células do Pulmão , Humanos , Carcinoma de Pequenas Células do Pulmão/radioterapia , Carcinoma de Pequenas Células do Pulmão/tratamento farmacológico , Neoplasias Pulmonares/terapia , Radiocirurgia/efeitos adversos , Análise por Pareamento , Estudos Retrospectivos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Fracionamento da Dose de Radiação
11.
Medicine (Baltimore) ; 103(36): e39393, 2024 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-39252303

RESUMO

The community population based studies on the relationship between obstructive sleep apnea and liver injury are limited. The study aimed to clarify the association between sleep apnea (SA) and liver injury by using the data in The National Health and Nutrition Examination Survey. SA was assessed by the sleep questionnaire and liver injury was evaluated by liver function test, hepatic steatosis index, and fibrosis-4. Weighted multivariable linear regression was performed to examine the association between SA and liver injury. Subgroup analyses and sensitivity analysis were also conducted. A total of 19,362 eligible participants were included in the study. After adjusting for confounders, the presence of SA was significantly associated with increased levels of lnALT, lnAST/alanine aminotransferase, lnGGT, and lnHSI (all P values < .05), but not with lnFIB-4 (P > .05). There is a dose-response relationship between the severity of SA and increased levels of lnALT, lnGGT, and decreased levels of lnAST/alanine aminotransferase (test for trend, all P values < .05). Subgroup analyses revealed that the positive association between SA and liver function, liver steatosis showed a tendency to exist in nonobese, younger, non-Hispanic Black, and male populations. Sensitive analysis showed the relationship between SA and liver injury was stable. Self-reported SA was independently associated with elevated liver enzymes and liver steatosis among US population. The association was more pronounced among nonobese, younger, non-Hispanic Black, and male populations.


Assuntos
Biomarcadores , Inquéritos Nutricionais , Autorrelato , Humanos , Masculino , Feminino , Biomarcadores/sangue , Pessoa de Meia-Idade , Adulto , Síndromes da Apneia do Sono/sangue , Síndromes da Apneia do Sono/epidemiologia , Alanina Transaminase/sangue , Testes de Função Hepática/métodos , Estados Unidos/epidemiologia , Apneia Obstrutiva do Sono/sangue , Apneia Obstrutiva do Sono/epidemiologia , Apneia Obstrutiva do Sono/complicações , Estudos Transversais , Fígado/lesões
12.
NPJ Precis Oncol ; 8(1): 31, 2024 Feb 10.
Artigo em Inglês | MEDLINE | ID: mdl-38341519

RESUMO

Tumor drug resistance emerges from the interaction of two critical factors: tumor cellular heterogeneity and the immunosuppressive nature of the tumor microenvironment (TME). Tumor-associated macrophages (TAMs) constitute essential components of the TME. M2-like TAMs are essential in facilitating tumor metastasis as well as augmenting the drug resistance of tumors. This review encapsulates the mechanisms that M2-like TAMs use to promote tumor drug resistance. We also describe the emerging therapeutic strategies that are currently targeting M2-like TAMs in combination with other antitumor drugs, with some still undergoing clinical trial evaluation. Furthermore, we summarize and analyze various existing approaches for developing novel drugs that target M2-like TAMs to overcome tumor resistance, highlighting how targeting M2-like TAMs can effectively stop tumor growth, metastasis, and overcome tumor drug resistance.

13.
World J Clin Cases ; 12(8): 1430-1436, 2024 Mar 16.
Artigo em Inglês | MEDLINE | ID: mdl-38576810

RESUMO

BACKGROUND: Peripherally inserted central catheters (PICCs) are an essential infusion route for oncology patients receiving intravenous treatments, but lower extremity venipuncture is the preferred technique for patients with superior vena cava syndrome (SVCS). We report the case of a patient with a lower extremity PICC ectopic to the ascending lumbar vein, to indicate and verify PICC catheterisation in the lower extremity is safe and feasible. And hope to provide different perspectives for clinical PICC venipuncture to get the attention of peers. CASE SUMMARY: On 24 August 2022, a 58-year-old male was admitted to our department due to an intermittent cough persisting for over a month, which worsened 10 d prior. Imaging and laboratory investigations suggested the patient with pulmonary malignancy and SVCS. Chemotherapy was not an absolute contraindication in this patient. Lower extremity venipuncture is the preferred technique because administering upper extremity venous transfusion to patients with SVCS can exacerbate oedema in the head, neck, and upper extremities. The patient and his family were informed about the procedure, and informed consent was obtained. After successful puncture and prompt treatment, the patient was discharged, experiencing some relief from symptoms. CONCLUSION: Inferior vena cava catheterisation is rare and important for cancer patients with SVCS, particularly in complex situations involving ectopic placement.

14.
Nat Commun ; 15(1): 8090, 2024 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-39284833

RESUMO

The engineered TadA variants used in cytosine base editors (CBEs) present distinctive advantages, including a smaller size and fewer off-target effects compared to cytosine base editors that rely on natural deaminases. However, the current TadA variants demonstrate a preference for base editing in DNA with specific motif sequences and possess dual deaminase activity, acting on both cytosine and adenosine in adjacent positions, limiting their application scope. To address these issues, we employ TadA orthologs screening and multi sequence alignment (MSA)-guided protein engineering techniques to create a highly effective cytosine base editor (aTdCBE) without motif and adenosine deaminase activity limitations. Notably, the delivery of aTdCBE to a humanized mouse model of Duchenne muscular dystrophy (DMD) mice achieves robust exon 55 skipping and restoration of dystrophin expression. Our advancement in engineering TadA ortholog for cytosine editing enriches the base editing toolkits for gene-editing therapy and other potential applications.


Assuntos
Adenosina , Citosina , Edição de Genes , Distrofia Muscular de Duchenne , Citosina/metabolismo , Animais , Edição de Genes/métodos , Adenosina/metabolismo , Camundongos , Humanos , Distrofia Muscular de Duchenne/genética , Distrofia Muscular de Duchenne/metabolismo , Engenharia de Proteínas , Distrofina/genética , Distrofina/metabolismo , Adenosina Desaminase/metabolismo , Adenosina Desaminase/genética , Modelos Animais de Doenças , Éxons/genética , Células HEK293 , Sistemas CRISPR-Cas , Proteínas de Escherichia coli
15.
Sci Adv ; 10(32): eadn0367, 2024 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-39121219

RESUMO

The development of noninvasive approaches to precisely control neural activity in mammals is highly desirable. Here, we used the ion channel transient receptor potential ankyrin-repeat 1 (TRPA1) as a proof of principle, demonstrating remote near-infrared (NIR) activation of endogenous neuronal channels in mice through an engineered nanoagonist. This achievement enables specific neurostimulation in nongenetically modified mice. Initially, target-based screening identified flavins as photopharmacological agonists, allowing for the photoactivation of TRPA1 in sensory neurons upon ultraviolet A/blue light illumination. Subsequently, upconversion nanoparticles (UCNPs) were customized with an emission spectrum aligned to flavin absorption and conjugated with flavin adenine dinucleotide, creating a nanoagonist capable of NIR activation of TRPA1. Following the intrathecal injection of the nanoagonist, noninvasive NIR stimulation allows precise bidirectional control of nociception in mice through remote activation of spinal TRPA1. This study demonstrates a noninvasive NIR neurostimulation method with the potential for adaptation to various endogenous ion channels and neural processes by combining photochemical toolboxes with customized UCNPs.


Assuntos
Raios Infravermelhos , Nanopartículas , Canal de Cátion TRPA1 , Animais , Canal de Cátion TRPA1/metabolismo , Canal de Cátion TRPA1/agonistas , Camundongos , Nanopartículas/química , Células Receptoras Sensoriais/metabolismo , Células Receptoras Sensoriais/fisiologia , Células Receptoras Sensoriais/efeitos dos fármacos , Canais Iônicos/metabolismo , Nociceptividade/efeitos dos fármacos
16.
Front Med (Lausanne) ; 10: 1259680, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38105903

RESUMO

Background: Cadmium (Cd) is a heavy metal associated with several human disorders. Preeclampsia is a major cause of maternal mortality worldwide. The association between maternal Cd exposure and preeclampsia remains elusive. Methods: To better understand this relationship, we conducted a systematic review and meta-analysis of eligible studies from five databases (PubMed, Embase, Web of Science, Scopus, and CNKI) from their inception to September 10, 2022. The quality of these studies was evaluated using the Newcastle-Ottawa quality assessment scale (NOS). We use random-effects models to calculate overall standardized mean differences (SMDs) and 95% confidence intervals (CIs). Sensitivity analyses were performed to assess the robustness of our results. We also evaluated publication bias using Egger's and Begg's tests. Additionally, we conducted meta-regression and sub-group analyses to identify potential sources of heterogeneity between studies. Results: Our analysis included a total of 17 studies with 10,373 participants. We found a significant association between maternal cadmium exposure and the risk of preeclampsia (SMD 0.27, 95% CI 0.09-0.44, p < 0.01). No significant publication bias was detected in Begg's or Egger's tests. Meta-regression suggested that geographical location, year of publication, cadmium samples, sample size, and measurement methods did not contribute to heterogeneity between studies. Conclusion: Our findings suggest that maternal blood cadmium levels are associated with an increased risk of preeclampsia. In contrast, the pregnant women's urine or placental levels of cadmium may not suggest preeclamptic risk during pregnancy. Further high-quality clinical studies and animal experiments are needed to understand this association better. Systematic review registration: PROSPERO, https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=361291, identifier: CRD42022361291.

17.
Medicine (Baltimore) ; 102(28): e34330, 2023 Jul 14.
Artigo em Inglês | MEDLINE | ID: mdl-37443478

RESUMO

RATIONALE: Colorectal cancer (CRC) is one of the most prevalent and deadly cancers worldwide, and approximately 50% of patients with early-stage disease develop metastases. A critical limitation for successful management of CRC is early disease detection and identification of progression. Next-generation sequencing-based circulating tumor DNA (ctDNA) profiling has emerged as a promising biomarker for the assessment of minimal or molecular residual disease in CRC. PATIENT CONCERNS: The patient was initially diagnosed with resectable CRC with uncertain small lung nodules. DIAGNOSES: The patient was diagnosed with sigmoid colon adenocarcinoma placed at 15 to 20 cm above the anal verge (ypT4N1R0). Lung nodules were found in the apical part of the upper lobe of the right lung and the dorsal segment of the lower lobe of the left lung. INTERVENTIONS: The patient received systemic therapy and local treatment and plasma ctDNA-MRD detection was performed for monitoring the molecular disease status after surgery. OUTCOMES: The patient achieved a complete response after treatment. However, he presented with disease recurrence in liver lesions. The postoperative ctDNA detection suggested the possibility of micrometastatic pulmonary disease, and that was confirmed by follow-up examination. Serial ctDNA detection revealed disease relapse ahead of radiologic imaging by a lead time of 9 months. This case demonstrated the potential of ctDNA analysis to be a sensitive and specific tool for the detection of micrometastatic disease and prediction of recurrence.


Assuntos
Adenocarcinoma , DNA Tumoral Circulante , Neoplasias do Colo , Neoplasias Colorretais , Masculino , Humanos , Neoplasias do Colo/diagnóstico , Neoplasias do Colo/genética , DNA Tumoral Circulante/genética , Recidiva Local de Neoplasia/diagnóstico , Recidiva Local de Neoplasia/genética , Neoplasias Colorretais/patologia , Micrometástase de Neoplasia , Biomarcadores Tumorais/genética
18.
Nat Biotechnol ; 41(8): 1080-1084, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-36624150

RESUMO

Here we developed an adenine transversion base editor, AYBE, for A-to-C and A-to-T transversion editing in mammalian cells by fusing an adenine base editor (ABE) with hypoxanthine excision protein N-methylpurine DNA glycosylase (MPG). We also engineered AYBE variants enabling targeted editing at genomic loci with higher transversion editing activity (up to 72% for A-to-C or A-to-T editing).


Assuntos
Adenina , DNA Glicosilases , Animais , Adenina/metabolismo , Edição de Genes , Reparo do DNA/genética , DNA Glicosilases/genética , DNA Glicosilases/metabolismo , Mamíferos
19.
Phytomedicine ; 115: 154843, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37149966

RESUMO

BACKGROUND: Chinese herbal formulae has multiple active constituents and targets, and the good clinical response is encouraging more scientists to explore the bio-active ingredients in such complex systems. Yi-Fei-San-Jie formula (YFSJF) is commonly used to treat patients with lung cancer in South China; however, its bio-active ingredients remain unknown. PURPOSE: We investigated the bio-active ingredients of the YFSJF using a novel comprehensive strategy. METHODS: A549 cell extraction coupled with ultra-high performance liquid chromatography-mass spectrometry (UPLC-MS/MS) was used for the screening of potential bio-active ingredients. Network pharmacology approach and molecular dynamics simulation were performed for the screening of targets. Surface plasmon resonance (SPR) assay and molecular biology techniques were used to verify the targets. RESULTS: Nine A549 cell membrane-binding compounds were identified through cell extraction/UPLC-MS/MS. Five compounds, namely ginsenoside Ro, ginsenoside Rb1, ginsenoside Rc, peimisine, and peimine were cytotoxic to A549 cells, and they were considered the bio-active ingredients of the YFSJF in vitro. Network pharmacology analysis revealed that TGFBR2 is the key target and the TGFß pathway is the key pathway targeted by YFSJF in non-small cell lung cancer. Peimisine showed an affinity to TGFBR2 using molecular docking and dynamic stimulation, which was confirmed using surface plasmon resonance spectroscopy. The molecular biology-based analysis further confirmed that peimisine targets TGFBR2 and can reverse A549 epithelial-mesenchymal transition by inhibiting the TGFß pathway. CONCLUSION: Taken together, cell extraction/UPLC-MS/MS, network pharmacology, and molecular biology-based analysis comprise a feasible strategy to explore active ingredients in YFSJF.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Medicamentos de Ervas Chinesas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Receptor do Fator de Crescimento Transformador beta Tipo II , Cromatografia Líquida de Alta Pressão , Cromatografia Líquida , Neoplasias Pulmonares/tratamento farmacológico , Simulação de Acoplamento Molecular , Farmacologia em Rede , Espectrometria de Massas em Tandem , Medicamentos de Ervas Chinesas/farmacologia
20.
ACS Appl Mater Interfaces ; 15(47): 54312-54321, 2023 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-37963239

RESUMO

Mild photothermal therapy (mPTT), which circumvents the limitations of conventional photothermal therapy, is emerging and exhibits remarkable potential in clinical applications. Nevertheless, mPTT is not able to efficiently eradicate tumors because its therapeutic efficacy is dramatically diminished by stress-induced heat shock proteins (HSP). Herein, a core-shell structured Au@Pd (AP) bimetallic nanozyme was fabricated for reactive oxygen species (ROS) augmentation-induced mPTT. The nanocatalytic AP nanozymes with photothermal conversion performance harbor multienzymatic (catalase, oxidase, and peroxidase) activities to induce ROS storm formation. The generated ROS could suppress the heat-defense response of tumor cells by cleaving HSP. Overall, our work highlights a ROS-regulating strategy to counteract hyperthermia-associated resistance in mPTT.


Assuntos
Neoplasias , Terapia Fototérmica , Humanos , Espécies Reativas de Oxigênio , Neoplasias/terapia , Peroxidase , Peroxidases , Linhagem Celular Tumoral , Microambiente Tumoral , Peróxido de Hidrogênio
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