Zobrazení zdroje stránky Klemmensenlambertsen6852

Here we report on the genomic sequence and annotation for Pantoea ananatis OC5a, a strain that was isolated from an onion bulb grown in New York and that is pathogenic to onions, causing center rot of onion. OC5a is the first P. ananatis strain pathogenic to onions from New York to be completely assembled and sequenced. Having been assembled using long PacBio reads and high-fidelity Illumina reads, this genome is closed, complete, and of high-quality.The phloem-limited 'Candidatus Liberibacter asiaticus' (Las) causes huanglongbing (HLB), a destructive citrus disease. Graft-inoculated potted plants were used to assess Las speed of movement in phloem in greenhouse (GH), and the impacts of temperature on plant colonization in growth chambers (GC) experiments. For assessment of Las speed, plants were inoculated at the main stem and assessed over time by qPCR or symptom at various distances from the inoculum. For colonization, the plants were inoculated in one of two opposite top branches, were maintained at 8 to 20, 18 to 30 or 24 to 38ºC daily range, and assessed by qPCR of samples taken from non-inoculated shoots. For all experiments, frequencies of Las-positive sites were submitted to ANOVA and binomial GLM and logistic regression analysis. Probabilities of detecting Las in GH plants were functions of time and distance from the inoculation site, which resulted in 2.9 and 3.8 cm day-1 average speed of movement. In GC, the temperature impacted plant colonization by Las, new shoot emission and symptom expression. After a 7-month exposure time, Las was absent in all new shoot in the cooler environment (avg 3 per plant), and present in 70% at the milder (6 shoots, severe symptoms) and 25% in the warmer (8 shoots, no visible symptoms) environments. Temperature of 25.7ºC was the optimum condition for plant colonization. This explains the higher impact and incidence of HLB during the winter months or regions of milder climates in Brazil.Aim To better predict the survival of cervical squamous cell carcinoma (CESC) patients, we aimed to construct a signature according to different immune infiltration. Methods We downloaded the RNA sequences of CESC patients from the Cancer Genome Atlas database. By using single-sample gene set enrichment analysis, we separated the samples into high- and low-immunity groups. Then we separated the samples into training and testing datasets and performed the following analyses univariate, least absolute shrinkage and selection operator analysis, multivariate Cox regression analyses and weighted gene coexpression network analysis using R software. Gene ontology and Kyoto Encyclopedia of Genes and Genomes studies were performed using the Database for Annotation, Visualization and Integrated Discovery website. Results &amp; conclusion We finally identified a signature with three mRNAs and two lncRNAs ADGRG5, HSH2D, ZMAT4, RBAKDN and LINC00200. In short, our study constructed an mRNA-lncRNA signature related to immune infiltration to better predict the survival of CESC patients.Prostate-specific membrane antigen (PSMA) PET/CT is a novel imaging technique for the detection and staging of either primary or recurrent prostate cancer. Early studies demonstrated its improved sensitivity and specificity over and in combination with other currently employed imaging techniques, such as multiparametric MRI, bone scan, PET and CT. However, the lack of strength and confidence in these studies has meant incorporation of PSMA PET/CT into clinical guidelines and practice has been limited to date. In response, a number of high-quality prospective studies have recently emerged and reflect exciting results seen in preceding publications. Here we recount some of the key earlier publications, report results from the latest studies and look to the future discussing some of the eagerly awaited ongoing clinical trials.Aim Examine outcomes in sunitinib-treated patients by International Metastatic RCC Database Consortium (IMDC) or Memorial Sloan-Kettering Cancer Center (MSKCC) risk factors. Patients &amp; methods Patients enrolled in STAR-TOR registry (n = 327). End points included overall survival, progression-free survival and objective response rate. Results Overall survival was similar for IMDC 0 versus 1 (p = 0.238) or 2 versus ≥3 (p = 0.156), but different for MSKCC (0 vs 1, p = 0.037; 2 vs ≥3, p = 0.001). Progression-free survival was similar for IMDC 2 versus 3 (p = 0.306), but different for MSKCC (p = 0.009). Objective response rate was different for IMDC 1 (41.9%) and 2 (29.5%) and similar for MSKCC 1 (34.4%) and 2 (31.0%). Conclusion Outcome data varied according to IMDC or MSKCC. [https://www.selleckchem.com/products/AC-220.html selleck kinase inhibitor] MSKCC model accurately stratify patients into risk groups. Clinical trial registration NCT00700258 (ClinicalTrials.gov).Tweetable abstract US FDA-approved immune checkpoint inhibitors have limited efficacy for gastrointestinal cancers such as #colorectalcancer and #pancreaticcancer. Could combinations with experimental cancer 'vaccines' be the key?[Figure see text].Hereditary breast and ovarian cancer (HBOC) is primarily associated with mutations in the BRCA1/2 genes. However, causal variants in other high, moderate, and low penetrance genes proportionally increase the risk of breast/ovarian cancer. This study aims to provide data about the mutation spectrum of HBOC-associated genes in Slovak HBOC families and estimate the ratio of BRCA versus non-BRCA causal variants. We used panel sequencing containing 22 high/moderate-risk susceptibility genes and parallel MLPA analysis of BRCA1/2, CHEK2 genes, to analyze 94 individuals with a strong family/personal history of breast and/or ovarian cancer. The analyzed group consisted of 80 patients diagnosed with cancer (85.1%) and 14 healthy individuals (14.9%) with a positive family history of HBOC syndrome. In total, we have identified 22 causal DNA variants (23.4%) showing 15 primary findings in BRCA1/2 genes (68.2%) and 7 positive secondary findings in CHEK2, PALB2, CDH1, and MUTYH genes (31.8%). The most frequent pathogenic alterations were BRCA1 mutations c.181T&gt;G and CNV variant (c.5573-?_c.5701+?)del, known as deletion of exons 21-22. Besides known mutations, the BRCA1 variant c.2794del (p.Val932Leufs*68) and variant c.2480dup (p.Tyr827*) in the CDH1 gene represent the novel, previously unpublished variants that might be population-specific. In conclusion, we provide the first report of multigene panel testing in Slovak HBOC families demonstrating that almost one-third of pathogenic mutations are situated in susceptibility genes other than BRCA1/2. Although multigene panel testing requires precise data filtration and interpretation, it might bring the relevant data for clinical management of the patients.Melanoma is a potentially lethal skin cancer with a high death rate. LncRNAs were reported to be implicated in melanoma progression. However, the function and mechanisms of lncRNA RNCR2 in melanoma are little known. In this study, RNCR2, miR-495-3p, and HK2 expression levels were measured in melanoma tissue specimens and cell lines by qPCR. EdU and CCK8 assays were performed to assess cell proliferation. Enolase activity, ATP level, lactate production, and glucose consumption measurement kits were used to evaluate the glycolysis of tumor cells. Immunofluorescence and western blot were used to detect the expression of epithelial-mesenchymal transition (EMT) and glycolysis-related proteins. Luciferase reporter assay was applied to confirm the target relationships. The role of RNCR2 in tumorigenesis was examined using murine xenograft models. LncRNA RNCR2 was upregulated in melanoma tissues and cell lines. Cell function detection showed that RNCR2 knockdown remarkably inhibited cell proliferation and EMT via glycolysis, as well as reduced the growth of a tumor. Mechanically, RNCR2 was confirmed to bind to miR-495-3p and positively regulated HK2 expression level, and the miR-495-3p level was negatively correlated with RNCR2 or HK2 in melanoma tissues. Further, miR-495-3p downregulation or HK2 upregulation partially reversed RNCR2 knockdown-induced inhibition of melanoma cell growth, EMT, and glycolysis. Collectively, RNCR2 might be an oncogenic lncRNA to promote tumor cell glycolysis and accelerate tumor growth via the miR-495-3p/HK2 axis, providing a promising treatment target for melanoma.CDA 435C&gt;T is reported as a functional SNP but there is no relevant research on the efficacy/hematological toxicity of gemcitabine-platinum treatment in Chinese non-small-cell lung cancer (NSCLC) patients. In this study, 63 patients who received radical resection (stage IB or IIIA) and 100 advanced NSCLC (stage IIIB or IV) patients have been collected, and all were treated with gemcitabine-platinum regimens from February of 2017 to February 2019. CDA 435C&gt;T polymorphisms have been detected by PCR and direct sequencing. CT scan results and blood routine examinations have been collected to evaluate the efficacy and hematological toxicity. Then the relationships have been analyzed about CDA 435C&gt;T. We found that T allele carriers have better therapy response (pT polymorphism in the Chinese population, in patients with the mutant T allele, gemcitabine is more effective, but they are more prone to suffering from hematological toxicity, especially the late-stage patients.Osimertinib (OSI) resistance commonly occurs during the treatment of non-small-cell lung cancer (NSCLC). This study aims to investigate whether the thermal effects of radiofrequency ablation (RFA) can increase the sensitivity of OSI-resistant NSCLC to OSI treatment and whether OSI effectively inhibits the recurrence of OSI-resistant NSCLC following RFA treatment and improve survival of NSCLC patients. In vitro, OSI-resistant NCI-H1975 (NCI-H1975/OSIR) cells and thermotolerant NCI-H1975/OSIR (NCI-H1975/OSIR-a-h) cells were established using human NSCLC cell line NCI-H1975. Cell viability, apoptosis, sensitivity to OSI, threonine-methionine amino acid substitution at position 790 (T790M) mutation levels, and protein expression of epidermal growth factor receptor (EGFR), phosphatidylinositol 3-kinase (PI3K), protein kinase B (AKT), hypoxia-inducible factor-1 alpha (HIF-1a) were detected using different methods. In vivo, a nude mouse model of metastatic human lung cancer was developed and subjected to RFA treatmerease the sensitivity of OSI-resistant NSCLC cells to OSI through the EGFR/PI3K/AKT/HIF-1a signaling pathway, indicating that RFA combined with OSI might be a clinically effective and comprehensive therapy for the treatment of OSI-resistant NSCLC.The use of stoichiometric organoborane reductants in organic synthesis is well established. Here these reagents have been rendered catalytic through an isodesmic B-O/B-H transborylation applied in the borane-catalyzed, chemoselective alkene reduction and formal hydrofunctionalization of enones. The reaction was found to proceed by a 1,4-hydroboration of the enone and B-O/B-H transborylation with HBpin, enabling catalyst turnover. Single-turnover and isotopic labeling experiments supported the proposed mechanism of catalysis with 1,4-hydroboration and B-O/B-H transborylation as key steps.N-Heterocyclic carbene (NHC) catalyzed desymmetrizing reactions of olefins have rapidly developed in recent years; however, the origins of the chemo- and stereoselectivities of these reactions remain poorly understood. Herein, we propose a mechanistic map for these reactions to predict how chemo- and stereoselectivities are controlled by different active intermediates (i.e., Breslow and acylazolium intermediates). Remarkably, our findings contradict a previous proposition that product structures are determined by a transformation between a pair of isomers.