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Gestational diabetes mellitus (GDM) disrupts glucolipid metabolism, endangering maternal and fetal health. Despite limited research on its pathogenesis and treatments, we conducted a study using serum samples from GDM-diagnosed pregnant women. We performed metabolic sequencing to identify key small molecule metabolites and explored their molecular interactions with FGF21. We also investigated FGF21's impact on GDM using blood samples from affected women. Our analysis revealed a novel finding: elevated levels of L-Cystine in GDM patients. Furthermore, we observed a positive correlation between L-Cystine and FGF21 levels, and found that L-Cystine induces NRF2 expression via FGF21 for a period of 96â¯h. Under high glucose (HG) conditions, FGF21 upregulates NRF2 and downstream genes NQO1 and EPHX1 via AKT phosphorylation induced by activation of IRS1, enhancing endothelial function. Additionally, we confirmed that levels of FGF21, L-Cystine, and endothelial function at the third trimester were effectively enhanced through appropriate exercise and diet during pregnancy in GDM patients (GDMâ¯+â¯ED). These findings suggest FGF21 as a potential therapeutic agent for GDM, particularly in protecting endothelial cells. Moreover, elevated L-Cystine via appropriate exercise and diet might be a potential strategy to enhance FGF21's efficacy.
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Purpose: Develop and validate a nomogram for predicting intestinal resection in pediatric intussusception suspecting intestinal necrosis. Patients & methods: Children with intussusception were retrospectively enrolled after a failed air-enema reduction in the outpatient setting and divided into two groups: the intestinal resection group and the non-intestinal resection group. The enrolled cases were randomly selected for training and validation sets with a split ratio of 3:1. A nomogram for predicting the risk of intestinal resection was visualized using logistic regression analysis with calibration curve, C-index, and decision curve analysis to evaluate the model. Results: A total of 547 cases were included in the final analysis, of which 414 had non-intestinal necrosis and 133 had intestinal necrosis and underwent intestinal resection. The training set consisted of 411 patients and the validation cohort included 136 patients. Through forward stepwise regression, four variables (duration of symptoms, C-reaction protein, white blood cells, ascites) were selected for inclusion in the nomogram with a concordance index 0.871 (95% confidence interval: 0.834-0.908). Conclusion: We developed a nomogram for predicting intestinal resection in children with intussusception suspecting intestinal necrosis after a failed air-enema based on multivariate regression. This nomogram could be directly applied to facilitate predicting intestinal resection in pediatric intussusception suspecting necrosis.
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Oncolytic viruses are multifaceted tumor killers, which can function as tumor vaccines to boost systemic antitumor immunity. In previous study, we rationally designed a synthetic oncolytic adenovirus (SynOV) harboring a synthetic gene circuit, which can kill tumors in mouse hepatocellular carcinoma (HCC) models. In this study, we demonstrated that SynOV could sense the tumor biomarkers to lyse tumors in a dosage-dependent manner, and killed PD-L1 antibody resistant tumor cells in mouse model. Meanwhile, we observed SynOV could cure liver cancer and partially alleviate the liver cancer with distant metastasis by activating systemic antitumor immunity. To understand its high efficacy, it is essential to explore the cellular and molecular features of the remodeled tumor microenvironment (TME). By combining spatial transcriptome sequencing and single-cell RNA sequencing, we successfully depicted the remodeled TME at single cell resolution. The state transition of immune cells and stromal cells towards an antitumor and normalized status exemplified the overall cancer-suppressive TME after SynOV treatment. Specifically, SynOV treatment increased the proportion of CD8+ T cells, enhanced the cell-cell communication of Cxcl9-Cxcr3, and normalized the Kupffer cells and macrophages in the TME. Furthermore, we observed that SynOV could induce distant responses to reduce tumor burden in metastatic HCC patient in the Phase I clinical trial. In summary, our results suggest that SynOV can trigger systemic antitumor immunity to induce CD8+ T cells and normalize the abundance of immune cells to remodel the TME, which promises a powerful option to treat HCC in the future.
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Carcinoma Hepatocelular , Neoplasias Hepáticas , Viroterapia Oncolítica , Virus Oncolíticos , Ratones , Animales , Humanos , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/terapia , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/terapia , Adenoviridae/genética , Linfocitos T CD8-positivos , Línea Celular Tumoral , Ensayos Antitumor por Modelo de Xenoinjerto , Virus Oncolíticos/genética , Viroterapia Oncolítica/métodos , Modelos Animales de Enfermedad , Análisis de la Célula Individual , Microambiente TumoralRESUMEN
Artificial RNA translation modulation usually relies on multiple components, such as RNA binding proteins (RBPs) or microRNAs (miRNAs) for off-switches and double-inverter cascades for on-switches. Recently, translational circular RNAs (circRNAs) were developed as promising alternatives for linear messenger RNAs (mRNAs). However, circRNAs still lack straightforward and programmable translation control strategies. Here, we rationally design a programmable miRNA-responsive internal ribosome entry site (IRES) translation activation and repression (PROMITAR) platform capable of implementing miRNA-based translation upregulation and downregulation in a single RNA construct. Based on the PROMITAR platform, we construct logic gates and cell-type classifier circRNAs and successfully identify desired mammalian cell types. We also demonstrate the potential therapeutic application of our platform for targeted cancer cell killing by encoding a cytotoxic protein in our engineered circRNAs. We expect our platform to expand the toolbox for RNA synthetic biology and provide an approach for potential biomedical applications in the future.
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MicroARNs , Animales , MicroARNs/genética , ARN Circular/genética , Regulación hacia Abajo , Sitios Internos de Entrada al Ribosoma , ARN Mensajero/genética , MamíferosRESUMEN
BACKGROUND: Anxiety has been characterized by disrupted processing of conflict control, while little is known about anticipatory processing of conflicts in anxiety. Anticipation is the key factor in both anxiety and cognitive control, especially under uncertain conditions. The current study therefore examined neurocomputational mechanisms of uncertain anticipation of conflict control in anxiety. METHODS: Twenty-six participants with high-trait anxiety and twenty-nine low-trait anxiety participants completed a cue-flanker task with functional magnetic resonance imaging. The hierarchical drift diffusion model (HDDM) was used to measure the cognitive computations during the task. To identify the neurocomputational mechanism of anticipatory control in anxiety, mediation analysis and dynamic causal modelling (DCM) analysis were conducted to examine the relationship between functional connectivity of brain networks and the parameters of HDDM. RESULTS: We found influences of regulatory signals from the dorsolateral prefrontal cortex to dorsal anterior cingulate cortex on decision threshold in low-trait anxiety (LTA), but not in high-trait anxiety (HTA), especially for the condition with uncertain cues. The results indicate deficient top-down anticipatory control of upcoming conflicts in anxious individuals. DCM and HDDM analyses revealed that lower decision threshold was associated with higher intrinsic connectivity of salience network (SN) in anxious individuals, suggesting that dysfunctional SN disrupts anticipation of conflict control under uncertainty in anxiety. CONCLUSIONS: Our results suggest hyperfunction of the SN underlies the deficient information accumulation during uncertain anticipation of upcoming conflicts in anxiety. Our findings shed new light on the mechanisms of anticipation processing and the psychopathology of anxiety.
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Multiple areas in the cerebellum have been reported to be engaged in reading. However, how these regions cooperate with the reading-related areas in the cerebrum remains unclear. Here, brain images of fifty-two adults were acquired via functional magnetic resonance imaging. By comparing the cerebellar activation across three localization tasks targeting orthographic, phonological, and semantic processing, we first identified three different reading-related areas in the cerebellum, biased toward orthography, phonology, and semantics, respectively. Then, functional connectivity (FC) analyses demonstrated that the mean FC between functionally corresponding areas across the cerebrum and cerebellum was greater than that between noncorresponding areas during silent word reading. FC patterns of functionally corresponding areas could significantly predict reading speed, with the FC driven from orthographic and semantic areas contributing the most. Effective FC analyses further showed that orthographic and semantic areas in the cerebellum had selective and direct connectivity to areas in the cerebrum with similar functional specificity. These results suggest that reading-related areas vary in their functions to reading, and cooperation between areas with corresponding functions was greater than that between noncorresponding areas. These findings emphasize the importance of functional cooperation between the cerebrum and cerebellum during reading from a new perspective.
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Cerebelo , Cerebro , Lectura , Mapeo Encefálico , Cerebelo/diagnóstico por imagen , Cerebelo/fisiología , Cerebro/diagnóstico por imagen , Cerebro/fisiología , Imagen por Resonancia Magnética , Semántica , Humanos , AdultoRESUMEN
Recent advances in global gene sequencing technologies and the effect they have had on disease diagnosis, therapy, and research have fueled interest in technologies capable of more broadly profiling not only genes but proteins, metabolites, cells, and almost any other component of biological systems. Mass cytometry is one such technology, which enables simultaneous characterization of over 40 parameters per cell, significantly more than can be achieved by even the most state-of-the-art flow cytometers. This mini-review will focus on how mass cytometry has been utilized to help advance the field of neoplastic hematology. Common themes among published studies include better defining lineage sub-populations, improved characterization of tumor microenvironments, and profiling intracellular signaling across multiple pathways simultaneously in various cell types. Reviewed studies highlight potential applications for disease diagnosis, prognostication, response to therapy, measurable residual disease analysis, and identifying new therapies.
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Background/Aims: Diabetic foot ulcers (DFUs) present a major challenge in clinical practice, and hyperglycemia-induced angiogenesis disturbance and endothelial dysfunction likely exacerbate DFUs. The long-acting glucagon-like peptide-1 (GLP-1) analog liraglutide (Lira) is a potential activator of AMP-activated protein kinase (AMPK) that appears to enhance endothelial function and have substantial pro-angiogenesis and antioxidant stress effects. Therefore, in this study, we aimed to investigate whether the protective role of Lira in diabetic wound healing acts against the mechanisms underlying hyperglycemia-induced endothelial dysfunction and angiogenesis disturbance. Methods: Accordingly, db/db mice were assessed after receiving subcutaneous Lira injections. We also cultured human umbilical vein endothelial cells (HUVECs) in either normal or high glucose (5.5 or 33 mM glucose, respectively) medium with or without Lira for 72 h. Results: An obvious inhibition of hyperglycemia-triggered endothelial dysfunction and angiogenesis disturbance was observed; follow by a promotion of diabetic wound healing under Lira treatment combined with restored hyperglycemia-impaired AMPK signaling pathway activity. AMPKα1/2 siRNA and Compound C (Cpd C), an inhibitor of AMPK, abolished both Lira-mediated endothelial protection and pro-angiogenesis action, as well as the diabetic wound healing promoted by Lira. Furthermore, hypoxia inducible factor-1α (Hif-1α; transcription factors of AMPK substrates) knockdown in HUVECs and db/db mice demonstrated that Lira activated AMPK to prevent hyperglycemia-triggered endothelial dysfunction and angiogenesis disturbance, with a subsequent promotion of diabetic wound healing that was Hif-1α-heme oxygenase-1 (HO-1) axis-dependent. Taken together, these findings reveal that the promotion of diabetic wound healing by Lira occurs via its AMPK-dependent endothelial protection and pro-angiogenic effects, which are regulated by the Hif-1α-HO-1 axis.
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BACKGROUND: To determine risk factors for intestinal necrosis in intussusception cases among children with failed non-surgical reduction for intussusception. METHODS: Totally, 540 hospitalized individuals with unsuccessful air-enema reduction in our hospital between November 2010 and November 2020 were assessed in this retrospective study. The 540 intussusception cases were divided into the intestinal necrosis and non-intestinal necrosis groups. Haemostatic parameters, demographic and clinical features were assessed. Predictors of intestinal necrosis were examined by univariable and multivariable logistic regression analyses. RESULTS: Of the 540 patients included, 113 showed intestinal necrosis. This intestinal necrosis group had a longer duration of symptom or length of illness, younger ages, higher platelet counts, fibrinogen amounts and d-dimer levels (all P = 0.000) compared with the non-intestinal necrosis group. Multivariable analysis revealed that duration of symptom (odds ratio (OR) 1.12; 95% confidence interval (CI) 1.16-1.23, P = 0.000), fibrinogen (OR 1.26; 95% CI 1.10-1.31, P = 0.010) and d-dimer (OR 2.07; 95% CI 1.91-2.28, P = 0.000) independently predicted intestinal necrosis in individuals undergoing surgical reduction for intussusception. Receiver operating characteristic curve analysis showed that d-dimer amounts had the largest area under the curve for predicting intestinal necrosis. CONCLUSION: On admission, long duration of symptom, high fibrinogen and d-dimer levels are critical risk factors for intestinal necrosis development in children with unsuccessful non-surgical reduction. d-Dimer levels have the best predictive value for intestinal necrosis.
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Hemostáticos , Intususcepción , Niño , Enema , Humanos , Lactante , Intususcepción/diagnóstico , Intususcepción/cirugía , Necrosis , Estudios RetrospectivosRESUMEN
OBJECTIVES: Management of colorectal cancer warrants mutational analysis of KRAS/NRAS when considering anti-epidermal growth factor receptor therapy and BRAF testing for prognostic stratification. In this multicenter study, we compared a fully integrated, cartridge-based system to standard-of-care assays used by participating laboratories. METHODS: Twenty laboratories enrolled 874 colorectal cancer cases between November 2017 and December 2018. Testing was performed on the Idylla automated system (Biocartis) using the KRAS and NRAS-BRAF cartridges (research use only) and results compared with in-house standard-of-care testing methods. RESULTS: There were sufficient data on 780 cases to measure turnaround time compared with standard assays. In-house polymerase chain reaction (PCR) had an average testing turnaround time of 5.6 days, send-out PCR of 22.5 days, in-house Sanger sequencing of 14.7 days, send-out Sanger of 17.8 days, in-house next-generation sequencing (NGS) of 12.5 days, and send-out NGS of 20.0 days. Standard testing had an average turnaround time of 11 days. Idylla average time to results was 4.9 days with a range of 0.4 to 13.5 days. CONCLUSIONS: The described cartridge-based system offers rapid and reliable testing of clinically actionable mutation in colorectal cancer specimens directly from formalin-fixed, paraffin-embedded tissue sections. Its simplicity and ease of use compared with other molecular techniques make it suitable for routine clinical laboratory testing.
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Neoplasias Colorrectales/genética , GTP Fosfohidrolasas/genética , Proteínas de la Membrana/genética , Proteínas Proto-Oncogénicas p21(ras)/genética , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores de Tumor/genética , Análisis Mutacional de ADN , Femenino , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Masculino , Persona de Mediana Edad , Nivel de Atención , Factores de TiempoRESUMEN
Myxoinflammatory fibroblastic sarcoma (MIFS) is a rare, low-grade soft tissue neoplasm preferentially arising in the extremities of young to middle-aged adults characterized histologically by a variegated appearance and absence of a distinctive immunophenotype. Herein we have evaluated a series of 73 cases of MIFS to define potential features and markers that may facilitate diagnosis. An immunohistochemical study with a large panel of antibodies showed strong positivity of the tumor cells for bcl-1 (94.5%), FXIIIa (89%), CD10 (80%), and D2-40 (56%). FISH and array comparative genomic hybridization (aCGH) were performed in a large subset of cases to investigate the utility for detecting the TGFBR3 and OGA t(1;10) rearrangement and BRAF abnormalities. Using a combination of FISH and/or aCGH, t(1;10) was detected in only 3 of 54 cases (5.5%). The aCGH study also demonstrated amplification of VGLL3 on chromosome 3 that was detected in 8 of 20 cases (40%). BRAF alterations were observed by FISH in 4 of 70 cases (5.7%) and correlated with gain of chromosome 3p12 (VGLL3). A novel fusion transcript involving exon 6 of ZNF335 and exon 10 of BRAF was identified in one case. Demonstration of amplification of VGLL3 on chromosome 3 in combination with expression of bcl-1 and FXIIIa may help support the diagnosis, however, due to their low specificity these markers are not sufficient for a definitive diagnosis in the absence of the appropriate clinical-pathological context. Until a more robust genetic or immunohistochemical signature is identified, the diagnosis of MIFS rests on its characteristic clinicopathological features.
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Biomarcadores de Tumor , Fibroblastos/química , Fibrosarcoma/química , Fibrosarcoma/genética , Inmunohistoquímica , Técnicas de Diagnóstico Molecular , Neoplasias de los Tejidos Blandos/química , Neoplasias de los Tejidos Blandos/genética , Adulto , Anciano , Anciano de 80 o más Años , Biomarcadores de Tumor/análisis , Biomarcadores de Tumor/genética , Hibridación Genómica Comparativa , Europa (Continente) , Femenino , Fibroblastos/patología , Fibrosarcoma/patología , Amplificación de Genes , Fusión Génica , Reordenamiento Génico , Predisposición Genética a la Enfermedad , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Hibridación Fluorescente in Situ , Masculino , Persona de Mediana Edad , Fenotipo , Neoplasias de los Tejidos Blandos/patología , Translocación Genética , Estados Unidos , Adulto JovenRESUMEN
PURPOSE: This study aimed to evaluate the mechanism by which miR-29c expression in fibroblasts regulates renal interstitial fibrosis. METHODS: We stimulated NRK-49F cells with TGF-ß1 to mimic the effects of fibrosis in vitro, while unilateral ureteral obstruction (UUO) was performed to obstruct the mid-ureter in mice. MiR-29c mimic or miR-29c inhibitor was used to mediate genes expressions in vitro. The recombinant adeno associated virus (rAAV) vectors carrying a FSP1 promoter that encodes miR-29c precursor or miR-29c inhibitor was used to mediate genes expressions in vivo, and a flank incision was made to expose the left kidney of each animal. RESULTS: In the present study, TGF-ß1 was demonstrated to regulate miR-29c expression through Wnt/ß-catenin signaling. In contrast, miR-29c appears to inhibit the Wnt/ß-catenin pathway by suppressing TPM1 expression. As suggested by this feedback mechanism, miR-29c may be a key fibrosis-related microRNA expressed by fibroblasts in TGF-ß1/Wnt/ß-catenin-driven renal fibrosis, and manipulation of miR-29c action may accordingly offer a potential therapeutic pathway for renal fibrosis treatment. CONCLUSION: MiR-29c expression was downregulated in UUO mouse kidneys as well as TGF-ß1-treated NRK-49F cells, which thus inhibits myofibroblast formation via targeting of TPM1. Additionally, the production of extracellular matrix (ECM) in renal fibroblasts appears to be controlled by the reciprocal regulation of miR-29c action and the Wnt/ß-catenin pathway.
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BACKGROUND: Newborn infants are highly vulnerable to oxidative stress. Following birth asphyxia, oxidative injury due to ischemia-reperfusion can result in significant brain and heart damage, leading to death or long-term disability. STUDY QUESTION: The study objective was to evaluate the effectiveness of antioxidant gamma-L-glutamyl-L-cysteine (γGlu-Cys) in inhibiting oxidative injury to cultured embryonic cardiomyocytes (H9c2 cells). STUDY DESIGN: Control and γGlu-Cys-treated (0.5 mM) H9c2 cells were incubated under 6-hour ischemic conditions followed by 2-hour simulated reperfusion. MEASURES AND OUTCOMES: To quantify oxidative stress-induced apoptosis sustained by cardiomyocytes, lactate dehydrogenase (LDH) release and the presence of cytosolic cytochrome c were measured, as well as the number of secondary lysosomes visualized under electron microscopy. RESULTS: Compared to controls, H9c2 cells coincubated with γGlu-Cys during ischemia-reperfusion exhibited a significant reduction in both LDH release into the incubation medium [23.88 ± 4.08 (SE) vs. 9.95 ± 1.86% of total; P = 0.02] and the number of secondary lysosomes [0.070 ± 0.009 (SD) vs. 0.043 ± 0.004 per µm; P = 0.01]. Inhibition of LDH release with γGlu-Cys was the same (P = 0.67) as that of a caspase inhibitor. The significant increase in cytosolic cytochrome c (P = 0.01) after ischemia-reperfusion simulation further supports γGlu-Cys's role in apoptosis prevention. CONCLUSIONS: It is concluded that the glutathione precursor γGlu-Cys protects cultured embryonic cardiomyocytes from apoptosis-associated oxidative injury.
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Antioxidantes/farmacología , Asfixia Neonatal/tratamiento farmacológico , Dipéptidos/farmacología , Daño por Reperfusión Miocárdica/prevención & control , Miocitos Cardíacos/efectos de los fármacos , Animales , Antioxidantes/uso terapéutico , Apoptosis/efectos de los fármacos , Asfixia Neonatal/complicaciones , Línea Celular , Dipéptidos/uso terapéutico , Modelos Animales de Enfermedad , Evaluación Preclínica de Medicamentos , Embrión de Mamíferos , Humanos , Recién Nacido , Daño por Reperfusión Miocárdica/etiología , Miocitos Cardíacos/patología , Estrés Oxidativo/efectos de los fármacos , RatasRESUMEN
OBJECTIVES: The naming convention in coagulation may cause confusion in electronic ordering systems, leading to inappropriate test orders. We implemented test utilization efforts and studied utilization before and after interventions for two specialty coagulation assays. METHODS: Two interventions were implemented: test names were changed from factor assay to activity, and residents reviewed all factor V and X requests. A retrospective review of factor V and X activity orders was performed for the period 1 year before and after interventions. RESULTS: After interventions, factor V and X activity orders decreased by approximately 40%. Resulted tests decreased by 53.8% and 47.8%, corresponding to reductions of $2,493.05 and $1,867.80 per year in laboratory charges for factor V and factor X activity, respectively. Abnormal factor V activity results increased from 45% to 59%. Factor V activity orders from outpatient clinics decreased by 21.6%. CONCLUSIONS: Simple interventions can reduce inappropriate specialty coagulation test orders and unnecessary costs.
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Pruebas de Coagulación Sanguínea/estadística & datos numéricos , Técnicas de Laboratorio Clínico/estadística & datos numéricos , Factor V/análisis , Factor X/análisis , Pruebas de Coagulación Sanguínea/economía , Técnicas de Laboratorio Clínico/economía , Factor V/genética , Inhibidores del Factor Xa/sangre , Humanos , Mutación , Estudios Retrospectivos , Procedimientos InnecesariosRESUMEN
Lipopolysaccharide (LPS) induces stress inflammation and apoptosis. Pulmonary epithelial cell apoptosis, which accelerates the progression of acute lung injury (ALI)/acute respiratory distress syndrome (ARDS), is the leading cause of mortality in patients with ALI/ARDS. The nephroblastoma overexpressed protein (CCN3), an inflammatory modulator, is reported to be a biomarker in ALI. Using the LPS-induced ALI model, this study investigated the expression of CCN3 and its possible molecular mechanism in lung alveolar epithelial cell inflammation and apoptosis. Our data revealed that LPS treatment greatly increased the level of CCN3 in A549 cells. The A549 cells were transfected with specific CCN3 small interfering RNA (siRNA) using transfection reagent. CCN3 siRNA not only largely attenuated the expressions of the inflammatory cytokines interleukin (IL)-1ß and transforming growth factor (TGF)-ß1, but also reduced the apoptotic rate of the AEC II cells and affected the expressions of the apoptosis-associated proteins (Bcl-2 and caspase-3). Furthermore, CCN3 knockdown greatly inhibited the activation of nuclear factor-κB p65 in A549 cells. In addition, TGF-ß/p-Smad inhibitor (TP0427736) and NF-κB inhibitor (PDTC) significantly attenuated the expression level of CCN3 in A549 cells. In conclusion, our data indicated that CCN3 siRNA affected downstream signal through TGF-ß/ p-Smad or NF-κB pathway, leading to the inhibition of cell inflammation and apoptosis in human alveolar epithelial cells.
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Lesión Pulmonar Aguda/metabolismo , Células Epiteliales Alveolares/metabolismo , Apoptosis/genética , Proteína Hiperexpresada del Nefroblastoma/metabolismo , Células A549 , Lesión Pulmonar Aguda/genética , Caspasa 3/metabolismo , Técnicas de Silenciamiento del Gen , Humanos , Inflamación/genética , Inflamación/metabolismo , Interleucina-1beta/metabolismo , Lipopolisacáridos/farmacología , Pulmón/metabolismo , FN-kappa B/antagonistas & inhibidores , FN-kappa B/metabolismo , Proteína Hiperexpresada del Nefroblastoma/genética , Proteínas Proto-Oncogénicas c-bcl-2/genética , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , ARN Interferente Pequeño , Transducción de Señal/genética , Proteínas Smad/metabolismo , Factor de Crecimiento Transformador beta/antagonistas & inhibidores , Factor de Crecimiento Transformador beta/genética , Factor de Crecimiento Transformador beta/metabolismoRESUMEN
Improving efficacy of oncolytic virotherapy remains challenging due to difficulty increasing specificity and immune responses against cancer and limited understanding of its population dynamics. Here, we construct programmable and modular synthetic gene circuits to control adenoviral replication and release of immune effectors selectively in hepatocellular carcinoma cells in response to multiple promoter and microRNA inputs. By performing mouse model experiments and computational simulations, we find that replicable adenovirus has a superior tumor-killing efficacy than non-replicable adenovirus. We observe a synergistic effect on promoting local lymphocyte cytotoxicity and systematic vaccination in immunocompetent mouse models by combining tumor lysis and secretion of immunomodulators. Furthermore, our computational simulations show that oncolytic virus which encodes immunomodulators can exert a more robust therapeutic efficacy than combinatorial treatment with oncolytic virus and immune effector. Our results provide an effective strategy to engineer oncolytic adenovirus, which may lead to innovative immunotherapies for a variety of cancers.
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Adenoviridae/genética , Genes Sintéticos , Viroterapia Oncolítica/métodos , Virus Oncolíticos/genética , Animales , Carcinoma Hepatocelular/terapia , Femenino , Células HEK293 , Células Hep G2 , Humanos , Inmunoterapia/métodos , Neoplasias Hepáticas/terapia , Ratones Endogámicos BALB C , Ratones Endogámicos C57BL , Ratones Desnudos , Ensayos Antitumor por Modelo de XenoinjertoRESUMEN
OBJECTIVE: To investigate the association between complement and inflammatory biomarkers with diabetic nephropathy (DN) in type 2 diabetes mellitus (T2DM). METHODS: Plasma and urinary complement and inflammatory biomarkers were measured in 115 T2DM patients assigned to one of two groups: with DN (n=48) and without DN (n=67). RESULTS: The plasma and urinary levels of C3a, C4d, C5a, sC5b-9 and MBL (mannan-binding lectin) were significantly higher in T2DM patients with DN compared to T2DM patients without DN. The plasma levels of IL-10 and INF-γ, as well as the urinary levels of INF-γ and TNF-α in T2DM patients with DN, were significantly higher than T2DM patients without DN. Both urinary MBL and INF-γ were independent risk factors for DN within T2DM patients (OR, 2.35 (95% CI 2.28-2.64) and 1.17 (95% CI 1.15-1.18); P=0.000 and 0.016, respectively). The area under the receiver-operating-characteristic-curve for urinary MBL was 0.89, with sensitivity 91% and specificity 83% for DN. The area under the receiver-operating-characteristic-curve for INF-γ was 0.84, with sensitivity 86% and specificity 79% based on cutoff values of 1.42 ng/mg and 5.15 pg/mg, respectively. CONCLUSION: This study suggests that urinary INF-γ and MBL levels are independent risk factors with a high predictive power for DN in T2DM patients.
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Biomarcadores/sangre , Proteínas del Sistema Complemento/metabolismo , Nefropatías Diabéticas/sangre , Inflamación/sangre , Adulto , Anciano , Área Bajo la Curva , Biomarcadores/orina , Proteínas del Sistema Complemento/orina , Nefropatías Diabéticas/orina , Femenino , Humanos , Inflamación/orina , Mediadores de Inflamación/sangre , Mediadores de Inflamación/orina , Masculino , Persona de Mediana Edad , Análisis Multivariante , Curva ROCRESUMEN
The Idylla Mutation Test System is an automated, PCR-based mutation testing system. The advantages of this system can greatly impact the delivery of precision medicine. We describe our evaluation, validation, and implementation of this system for routine testing of BRAF, EGFR, KRAS, and NRAS using formalin-fixed, paraffin-embedded cancer samples. All four Idylla test systems showed excellent concordance with reference methods. The analytical sensitivity ranged from 94.66% to 100%, depending on the cartridge, and specificity was 100%. A few discordant results were noted and further investigated: KRAS Q61L was misclassified as Q61H; KRAS Q61R was not identified; there was a false-negative EGFR double mutation (L861Q and G719A); and there was a false-negative EGFR double mutation (T790M and exon 19 deletion). The limit of detection was determined to be 1% or 5% for the variants with available reference material. The turnaround time was shortened by 7 days on average. Idylla testing of a cohort of 25 non-small-cell lung cancer samples with insufficient material for next-generation sequencing testing delivered results for all cases and identified actionable results for eight cases. In addition, patient care would have been changed in four of these cases: targeted therapies were identified in two cases, and repeated biopsies would have been avoided in two cases. The Idylla molecular testing system is an accessible, rapid, robust, and reliable testing option for both routine and challenging formalin-fixed, paraffin-embedded specimens.
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Biomarcadores de Tumor/genética , Carcinoma de Pulmón de Células no Pequeñas/genética , Neoplasias Colorrectales/genética , Análisis Mutacional de ADN/métodos , Secuenciación de Nucleótidos de Alto Rendimiento/métodos , Melanoma/genética , Mutación , Carcinoma de Pulmón de Células no Pequeñas/diagnóstico , Neoplasias Colorrectales/diagnóstico , Humanos , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/genética , Melanoma/diagnóstico , Selección de Paciente , Medicina de Precisión , Inhibidores de Proteínas Quinasas/uso terapéuticoRESUMEN
Background/Aims: Diabetic non-healing skin ulcers represent a serious challenge in clinical practice, in which the hyperglycemia-induced disturbance of angiogenesis, and endothelial dysfunction play a crucial role. Resveratrol (RES), a silent information regulator 1 (SIRT1) agonist, can improve endothelial function and has strong pro-angiogenic properties, and has thus become a research focus for the treatment of diabetic non-healing skin ulcers; however, the underlying mechanism by which RES regulates these processes remains unclear. Therefore, the present study was intended to determine if RES exerts its observed protective role in diabetic wound healing by alleviating hyperglycemia-induced endothelial dysfunction and the disturbance of angiogenesis. Methods: We investigated the effects of RES on cell migration, cell proliferation, apoptosis, tube formation, and the underlying molecular mechanisms in 33 mM high glucose-stimulated human umbilical vein endothelial cells (HUVECs) by semi-quantitative RT-PCR, western blot analysis, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining, and immunofluorescence in vitro. We further explored the role of RES on endothelial dysfunction and wound healing disturbance in db/db mice by TUNEL staining, immunofluorescence, and photography in vivo. Results: We observed an obvious inhibition of hyperglycemia-triggered endothelial dysfunction and a disturbance of angiogenesis, followed by the promotion of diabetic wound healing via RES, along with restoration of the activity of the hyperglycemia-impaired SIRT1 signaling pathway. Pretreatment with EX-527, a SIRT1 inhibitor, abolished the RES-mediated endothelial protection and pro-angiogenesis action, and then delayed diabetic wound healing. Furthermore, examination of the overexpression of forkhead box O1 (FOXO1), a transcription factor substrate of SIRT1, in HUVECs and db/db mice revealed that RES activated SIRT1 to restore hyperglycemia-triggered endothelial dysfunction and disturbance of angiogenesis, followed by the promotion of diabetic wound healing in a c-Myc-dependent manner. Pretreatment with 10058-F4, a c-Myc inhibitor, repressed RES-mediated endothelial protection, angiogenesis, and diabetic wound healing. Conclusion: Our findings indicate that the positive role of RES in diabetic wound healing via its SIRT1-dependent endothelial protection and pro-angiogenic effects involves the inhibition of FOXO1 and the de-repression of c-Myc expression.
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The complex interactions in biological systems have been shown to affect the response to single-targeted therapies which were initially developed under the "reductionist paradigm" of cancer precision medicine. To address these fundamental challenges, great efforts have been dedicated from a network perspective to explore the mechanisms underlying tumorigenesis and progression and to extend our understanding of cancer as a complex disease, which is exploiting new advances in cancer diagnosis, prevention, and treatment. This review summarizes recent progress of network applications in cancer precision medicine research, including biomarker identification, cancer patient stratification and network target recognition, highlights network-based systematic integrations across macro and micro networks, and discusses the tremendous potential of this new emerging network-based "systems paradigm" for precision medicine, which would ultimately make substantial progress for fighting cancer.