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1.
Genomics ; 116(2): 110810, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-38402913

RESUMO

This study generated whole genome DNA methylation maps to characterize DNA methylomes of grape (cv. 'Cabernet Franc') skins and examine their functional significance during grape skin coloration. We sampled grape skin tissues at three key stages (the early stage of grape berry swelling, the late stage of grape berry swelling and the veraison) during which the color of grape berries changed from green to red. DNA methylation levels of grape skins at the three stages were higher in transposable element regions than in the genic regions, and the CG and CHG DNA methylation levels of the genic region were higher than the CHH DNA methylation levels. We identified differentially methylated regions (DMRs) in S2_vs_S1 and S3_vs_S1. The results indicated that DMRs predominantly occurred within the CHH context during grape skin coloration. Many gene ontology (GO)-enriched DMR-related genes were involved in "nucleotide binding," "catalytic activity" and "ribonucleotide binding" terms; however, many KEGG-enriched DMR-related genes were involved in the "flavonoid biosynthesis" pathway. Our results could provide an important foundation for future research on the development mechanism of grape berries.


Assuntos
Vitis , Vitis/genética , Metilação de DNA , Frutas , Genes de Plantas , Análise de Sequência de RNA
2.
BMC Genomics ; 25(1): 933, 2024 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-39370521

RESUMO

BACKGROUND: The intestinal mucosal immune system, renowned for its precise and sensitive regulation, can provide comprehensive and effective protection for the body, among which the ileum is a critical induction site for regulating mucosal immune homeostasis. Moniezia benedeni parasitizes the small intestine of sheep and can cause serious pathological damage or even death to the host when the infection is severe. In this study, 5 sheep infected with Moniezia benedeni were selected as the infected group, and 5 uninfected sheep were selected as the control group. The ileal transcriptome profile characteristics of Moniezia benedeni infection were analyzed based on RNA-seq sequencing technology, aiming to lay a foundation for further exploring the perception mechanism of sheep intestines to Moniezia benedeni infection and formulating effective prevention and control strategies. RESULTS: The results showed that a total of 3,891 differentially expressed genes (DEGs) were detected in the ileum tissues of sheep between the infected and control groups with 2,429 up-regulated genes and 1,462 down-regulated genes. GO and KEGG pathway enrichment analysis of differential genes, as well as Clue GO analysis showed that differential genes were significantly enriched in immune and metabolic-related biological processes and signaling pathways. Particularly, in immune-related signaling pathways, the B cell receptor signaling pathway was significantly down-regulated, while in metabolic regulation related signaling pathways, Bile secretion, Fat digestion and absorption and Vitamin digestion and absorption were notably up-regulated. On this basis, the differential core genes related to immune metabolism were verified by qRT-PCR method. The results showed that OVAR, CD3E, CD8A, CD4 and CD28 were significantly up-regulated (P < 0.05), while CIITA, BLNK, BCL6 and CD79A were significantly down-regulated (P < 0.05), which were consistent with transcriptome sequencing data. CONCLUSIONS: The results demonstrated that Moniezia benedeni infection significantly affected the immune and metabolic processes in sheep ileum, particularly, it significantly inhibited the activation process of host B cells, and also led to an overactive function of bile acid metabolism. This finding provides a solid foundation for further elucidating the response mechanism of Peyer's patches in sheep ileum to Moniezia tapeworm infection.


Assuntos
Íleo , Doenças dos Ovinos , Transcriptoma , Animais , Ovinos , Íleo/metabolismo , Doenças dos Ovinos/genética , Doenças dos Ovinos/parasitologia , Perfilação da Expressão Gênica , Cestoides/genética
3.
Prenat Diagn ; 44(9): 1043-1052, 2024 08.
Artigo em Inglês | MEDLINE | ID: mdl-38488843

RESUMO

OBJECTIVE: This study aimed to develop and validate a prenatal cell-free DNA (cfDNA) screening method that uses capture-based enrichment to genotype fetal autosomal recessive disorders. This method was applied in pregnancies at high risk of autosomal recessive non-syndromic hearing loss (ARNSHL) to assess its accuracy and effectiveness. METHODS: This assay measured the allele counts in both white blood cell DNA and cfDNA from the blood samples of pregnant women using a capture-based next-generation sequencing method. It then applied a binomial model to infer the fetal genotypes with the maximum likelihood. Ninety-four pregnant couples that were carriers of variants of ARNSHL in GJB2 or SLC26A4 were enrolled. The fetal genotypes deduced using this screening method were compared with the results of genetic diagnosis using amniocentesis. RESULTS: Of the 94 couples, 65 carried more than one variant, resulting in 170 single-nucleotide polymorphism (SNP) loci to be inferred in the fetuses. Of the 170 fetal SNP genotypes, 150 (88.2%) had high confidence calls and 139 (92.7%) of these matched the genotypes obtained by amniocentesis result. Out of the remaining 20 (11.8%) cases with low-confidence calls, only 14 (70.0%) were concordant with genetic diagnosis using amniocentesis. The concordance rate was 100% for sites where the maternal genotype was wild-type homozygous. The discordance was site-biased, with each locus showing a consistent direction of discordance. Genetic diagnosis identified a total of 19 wild-type homozygotes, 46 heterozygotes, 19 compound heterozygotes, and 10 pathogenic homozygotes. This screening method correctly genotyped 81.9% (77/94) of fetuses and demonstrated a sensitivity of 89.7% and a specificity of 89.2% for correctly identifying ARNSHL. CONCLUSION: This capture-based method of prenatal screening by cfDNA demonstrated strong potential for fetal genotyping of autosomal recessive disorders.


Assuntos
Ácidos Nucleicos Livres , Humanos , Feminino , Gravidez , Ácidos Nucleicos Livres/sangue , Ácidos Nucleicos Livres/análise , Ácidos Nucleicos Livres/genética , Adulto , Genes Recessivos , Teste Pré-Natal não Invasivo/métodos , Polimorfismo de Nucleotídeo Único , Genótipo , Conexina 26/genética , Diagnóstico Pré-Natal/métodos , Masculino , Perda Auditiva/diagnóstico , Perda Auditiva/genética
4.
Int J Mol Sci ; 25(2)2024 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-38255862

RESUMO

Ethylene is one crucial phytohormone modulating plants' organ development and ripening process, especially in fruits, but its action modes and discrepancies in non-climacteric grape and climacteric peach in these processes remain elusive. This work is focused on the action mode divergences of ethylene during the modulation of the organ development and ripening process in climacteric/non-climacteric plants. We characterized the key enzyme genes in the ethylene synthesis pathway, VvACO1 and PpACO1, and uncovered that their sequence structures are highly conserved, although their promoters exhibit important divergences in the numbers and types of the cis-elements responsive to hormones, implying various responses to hormone signals. Subsequently, we found the two have similar expression modes in vegetative organ development but inverse patterns in reproductive ones, especially in fruits. Then, VvACO1 and PpACO1 were further validated in promoting fruit ripening functions through their transient over-expression/RNAi-expression in tomatoes, of which the former possesses a weaker role than the latter in the fruit ripening process. Our findings illuminated the divergence in the action patterns and function traits of the key VvACO1/PpACO1 genes in the tissue development of climacteric/non-climacteric plants, and they have implications for further gaining insight into the interaction mechanism of ethylene signaling during the modulation of the organ development and ripening process in climacteric/non-climacteric plants.


Assuntos
Climatério , Prunus persica , Vitis , Prunus persica/genética , Vitis/genética , Menopausa , Etilenos
5.
Plant Cell ; 32(1): 263-284, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31732704

RESUMO

In eukaryotes, autophagy maintains cellular homeostasis by recycling cytoplasmic components. The autophagy-related proteins (ATGs) ATG1 and ATG13 form a protein kinase complex that regulates autophagosome formation; however, mechanisms regulating ATG1 and ATG13 remain poorly understood. Here, we show that, under different nutrient conditions, the RING-type E3 ligases SEVEN IN ABSENTIA OF ARABIDOPSIS THALIANA1 (SINAT1), SINAT2, and SINAT6 control ATG1 and ATG13 stability and autophagy dynamics by modulating ATG13 ubiquitylation in Arabidopsis (Arabidopsis thaliana). During prolonged starvation and recovery, ATG1 and ATG13 were degraded through the 26S proteasome pathway. TUMOR NECROSIS FACTOR RECEPTOR ASSOCIATED FACTOR1a (TRAF1a) and TRAF1b interacted in planta with ATG13a and ATG13b and required SINAT1 and SINAT2 to ubiquitylate and degrade ATG13s in vivo. Moreover, lysines K607 and K609 of ATG13a protein contributed to K48-linked ubiquitylation and destabilization, and suppression of autophagy. Under starvation conditions, SINAT6 competitively interacted with ATG13 and induced autophagosome biogenesis. Furthermore, under starvation conditions, ATG1 promoted TRAF1a protein stability in vivo, suggesting feedback regulation of autophagy. Consistent with ATGs functioning in autophagy, the atg1a atg1b atg1c triple knockout mutants exhibited premature leaf senescence, hypersensitivity to nutrient starvation, and reduction in TRAF1a stability. Therefore, these findings demonstrate that SINAT family proteins facilitate ATG13 ubiquitylation and stability and thus regulate autophagy.


Assuntos
Proteínas de Arabidopsis/metabolismo , Arabidopsis/metabolismo , Autofagia/fisiologia , Proteínas Quinases/metabolismo , Ubiquitina-Proteína Ligases/metabolismo , Arabidopsis/genética , Proteínas de Arabidopsis/genética , Proteínas de Transporte/metabolismo , Proteínas de Membrana , Proteínas Mitocondriais , Peptídeos e Proteínas Associados a Receptores de Fatores de Necrose Tumoral , Ubiquitina-Proteína Ligases/genética , Ubiquitinação
6.
J Surg Res ; 284: 318-321, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36641946

RESUMO

INTRODUCTION: Mindsets of health have been linked to different outcomes for patients with both surgical and medical conditions. A "growth" mindset, in which health is defined as malleable and subject to improvement, is associated with improved attitudes and outcomes when compared to a "fixed" mindset, in which health is defined as unchangeable. In pediatric surgery, parental growth mindsets of health have been correlated with better postoperative outcomes, including lower scores of anxiety and pain perceptions, for children. This was particularly notable in a study of postoperative outcomes for patients with pectus excavatum. In our current study, we extend our investigations to explore how health mindsets are associated with perceptions of chest wall anomalies before correction is undertaken. METHODS: Seventy-six patients (71 males, mean age 14 y, and 43 excavatum) and 18 parents were surveyed during a routine chest wall clinic visit. Demographic and clinical information as well as the Health Mindset Scale and Pectus Excavatum Evaluation Questionnaire were administered and collected pretreatment. RESULTS: Parental mindsets of health were significantly correlated with parent assessments of their children's chest pain, physical activity, and concerns about the life-time effect of the condition. A parental growth mindset was linked to lower scores of chest pain, higher ratings of activity, and lower overall level of concern. Furthermore, parental health mindsets also significantly correlated with children's own perceptions of their chest pain, physical activity, shortness of breath, and fatigue. Growth mindset also was linked to more positive ratings. CONCLUSIONS: Parental growth mindset was associated with more positive assessments of children's symptoms and limitations due to pectus deformities than fixed mindsets. Health mindset has been linked to patient perceptions of, and outcomes for, diabetes, renal disease, allergies, scoliosis, and obesity. Further study into parental and patient mindset correlation may help elucidate factors for bracing compliance, and perhaps to better prepare children and parents for corrective surgical procedures.


Assuntos
Tórax em Funil , Escoliose , Parede Torácica , Masculino , Criança , Humanos , Adolescente , Parede Torácica/cirurgia , Tórax em Funil/cirurgia , Escoliose/complicações , Dor no Peito , Pais
7.
Int J Mol Sci ; 24(11)2023 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-37298429

RESUMO

In plant cells, multiple paralogs from ribosomal protein (RP) families are always synchronously expressed, which is likely contributing to ribosome heterogeneity or functional specialization. However, previous studies have shown that most RP mutants share common phenotypes. Consequently, it is difficult to distinguish whether the phenotypes of the mutants have resulted from the loss of specific genes or a global ribosome deficiency. Here, to investigate the role of a specific RP gene, we employed a gene overexpression strategy. We found that Arabidopsis lines overexpressing RPL16D (L16D-OEs) display short and curled rosette leaves. Microscopic observations reveal that both the cell size and cell arrangement are affected in L16D-OEs. The severity of the defect is positively correlated with RPL16D dosage. By combining transcriptomic and proteomic profiling, we found that overexpressing RPL16D decreases the expression of genes involved in plant growth, but increases the expression of genes involved in immune response. Overall, our results suggest that RPL16D is involved in the balance between plant growth and immune response.


Assuntos
Proteínas de Arabidopsis , Arabidopsis , Arabidopsis/metabolismo , Proteínas Ribossômicas/genética , Proteínas Ribossômicas/metabolismo , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Proteômica , Folhas de Planta/metabolismo , Regulação da Expressão Gênica de Plantas , Fenótipo
8.
Cardiovasc Diabetol ; 20(1): 82, 2021 04 22.
Artigo em Inglês | MEDLINE | ID: mdl-33888131

RESUMO

BACKGROUND: The triglyceride-glucose index (TyG index) has been proposed as a simple and reliable alternative insulin resistance (IR) marker, while the homeostasis model assessment for IR (HOMA-IR) is the most frequently used index. Few studies have evaluated the role of IR assessed by the TyG index and HOMA-IR on arterial stiffness in a type 2 diabetes (T2D) population with a high risk of increased arterial stiffness. We aimed to investigate the association of the TyG index and HOMA-IR with arterial stiffness in patients with T2D. METHODS: We recruited 3185 patients with T2D, who underwent brachial-ankle pulse wave velocity (baPWV), an indicator of arterial stiffness, but without previous cardiovascular disease. Increased arterial stiffness was defined as a baPWV value greater than the 75th percentile (18.15 m/s) in the present study. The TyG index was determined as ln(fasting triglycerides [mg/dL] × fasting glucose [mg/dL]/2), and the HOMA-IR was calculated as (fasting insulin [µIU/mL] × fasting glucose [mmol/L])/22.5. RESULTS: The mean age of the study participants was 54.6 ± 12.0 years, and 1954 (61.4%) were men. Seemingly unrelated regression estimation analysis demonstrated that the TyG index had stronger associations with baPWV than the HOMA-IR (all P < 0.001). In the multivariable logistic analyses, each one-unit increase in the TyG index was associated with a 1.40-fold (95% CI 1.16-1.70, P < 0.001) higher prevalence of increased arterial stiffness, but the prominent association of the HOMA-IR with the prevalence of increased arterial stiffness was not observed. Subgroup analyses showed that a more significant association between the TyG index and the prevalence of increased arterial stiffness was detected in older patients with a longer duration of diabetes and poor glycaemic control (all P < 0.05). CONCLUSIONS: Compared with the HOMA-IR, the TyG index is independently and more strongly associated with arterial stiffness in patients with T2D.


Assuntos
Glicemia/análise , Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/fisiopatologia , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/fisiopatologia , Resistência à Insulina , Triglicerídeos/sangue , Rigidez Vascular , Adulto , Idoso , Índice Tornozelo-Braço , Biomarcadores/sangue , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/epidemiologia , China/epidemiologia , Estudos Transversais , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/epidemiologia , Feminino , Fatores de Risco de Doenças Cardíacas , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prevalência , Análise de Onda de Pulso , Medição de Risco
9.
FASEB J ; 34(9): 13033-13048, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32777136

RESUMO

The increasing prevalence of nonalcoholic fatty liver disease (NAFLD) worldwide indicates the urgent need to develop novel and effective treatment strategies. Betulinic acid (BA), a naturally occurring plant-derived pentacyclic triterpenoid, has an outstanding effect in improving metabolism. However, the pharmacological action and mechanism of BA in NAFLD remain unclear. Here, we show that BA-treated high-fat diet mice and methionine-choline deficient diet-fed mice are resistant to hepatic steatosis when compared with vehicle-treated mice. BA alleviates fatty acid synthesis, fibrosis, and inflammation and promotes fatty acid oxidation. Meanwhile, fatty acid synthase (FAS) expression and activity are markedly inhibited with BA treatment both in vitro and in vivo. Moreover, BA inhibits FAS expression through transcriptional suppression of Yin Yang 1 (YY1), leading to retard hepatocytes triglyceride accumulation. Collectively, BA protects hepatocytes from abnormal lipid deposition in NAFLD through YY1/FAS pathway. Our findings establish a novel role of BA in representing a possible therapeutic strategy to reverse NAFLD.


Assuntos
Ácido Graxo Sintase Tipo I/metabolismo , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Triterpenos Pentacíclicos/uso terapêutico , Substâncias Protetoras/uso terapêutico , Fator de Transcrição YY1/metabolismo , Animais , Ácidos Graxos/metabolismo , Células Hep G2 , Hepatócitos/efeitos dos fármacos , Hepatócitos/patologia , Humanos , Fígado/efeitos dos fármacos , Fígado/patologia , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Ácido Betulínico
10.
Funct Integr Genomics ; 16(4): 347-63, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26842940

RESUMO

GRAS domain genes are a group of important plant-specific transcription factors that have been reported to be involved in plant development. In order to know the roles of GRAS genes in grapevine, a widely cultivated fruit crop, the study on grapevine GRAS (VvGRAS) was carried out, and from which, 43 were identified from 12× assemble grapevine genomic sequences. Further, the genomic structures, synteny, phylogeny, expression profiles in different tissues of these genes, and their roles in response to stress were investigated. Among the genes, two potential target genes (VvSCL15 and VvSCL22) for VvmiR171 were experimentally verified by PPM-RACE and RLM-RACE, in that not only the cleavage sites of miR171 on the target mRNA were mapped but also the cleaved fragments and their expressing patterns were detected. Transgenic Arabidopsis plants over expression VvSCL15 showed lower tolerance to drought and salt treatments.


Assuntos
Arabidopsis/genética , Estresse Fisiológico/genética , Fatores de Transcrição/genética , Vitis/genética , Sequência de Aminoácidos/genética , Arabidopsis/crescimento & desenvolvimento , Secas , Regulação da Expressão Gênica de Plantas , Genoma de Planta , Família Multigênica/genética , Plantas Geneticamente Modificadas/genética , Vitis/crescimento & desenvolvimento
11.
Biochem Biophys Res Commun ; 479(2): 139-145, 2016 10 14.
Artigo em Inglês | MEDLINE | ID: mdl-27416763

RESUMO

Vascular smooth muscle cells (VSMCs) phenotype modulation toward a synthetic phenotype is the main cause of cardiovascular disease. As a newly discovered myokine, Irisin is thought to be a promising candidate for the treatment of metabolic disturbances, as well as cardiovascular disease. However, no evidence has been shown for the direct effect of Irisin on VSMCs phenotype modulation and its underling mechanisms. The aim of this study was to explore the effect of Irisin on VSMCs phenotype modulation and the mechanisms involved. In the present study, it was found that Irisin restored the PDGF-BB-induced VSMCs phenotype modulation which exhibited down-regulation of smooth muscle cells (SMC) expression and up-regulation of matrix synthesis related marker expression, as well as proliferative phenotype. Moreover, our research demonstrated that Irisin further activated STAT3 signaling pathways. Finally, by applying an STAT3 inhibitor, WP1066, we revealed the roles of STAT3 in the PDGF-BB-induced VSMCs phenotype modulation when they were treated with Irisin. Taken together, these results demonstrated that Irisin may play a crucial role in regulating VSMCs phenotype modulation via the STAT3 signaling pathway.


Assuntos
Fibronectinas/farmacologia , Miócitos de Músculo Liso/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-sis/farmacologia , Fator de Transcrição STAT3/metabolismo , Transdução de Sinais/efeitos dos fármacos , Actinas/genética , Actinas/metabolismo , Animais , Becaplermina , Western Blotting , Células Cultivadas , Expressão Gênica/genética , Humanos , Masculino , Proteínas dos Microfilamentos/genética , Proteínas dos Microfilamentos/metabolismo , Proteínas Musculares/genética , Proteínas Musculares/metabolismo , Músculo Liso Vascular/citologia , Miócitos de Músculo Liso/metabolismo , Fenótipo , Fosforilação/efeitos dos fármacos , Ratos Sprague-Dawley , Reação em Cadeia da Polimerase Via Transcriptase Reversa
12.
Funct Integr Genomics ; 15(6): 673-84, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26054906

RESUMO

With more copper and copper-containing compounds used as bactericides and fungicides in viticulture, copper homeostasis in grapevine (Vitis) has become one of the serious environmental crises with great risk. To better understand the regulation of Cu homeostasis in grapevine, grapevine seedlings cultured in vitro with different levels of Cu were utilized to investigate the tolerance mechanisms of grapevine responding to copper availability at physiological and molecular levels. The results indicated that Cu contents in roots and leaves arose with increasing levels of Cu application. With copper concentration increasing, malondialdehyde (MDA) content increased in roots and leaves and the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) increased to protect the plant itself from damage. The expression patterns of 19 genes, encoding transporters, chaperones, and P-type ATPases involved in copper homeostasis in root and leaf of grapevine seedling under various levels of Cu(2+) were further analyzed. The expression patterns indicated that CTr1, CTr2, and CTr8 transporters were significantly upregulated in response both to Cu excess and deficiency. ZIP2 was downregulated in response to Cu excess and upregulated under Cu-deficient conditions, while ZIP4 had an opposite expression pattern under similar conditions. The expression of chaperones and P-type ATPases in response to Cu availability in grapevine were also briefly studied.


Assuntos
Proteínas de Transporte de Cátions/metabolismo , Cobre/metabolismo , Homeostase , Chaperonas Moleculares/metabolismo , Proteínas de Plantas/metabolismo , Vitis/genética , Sequência de Aminoácidos , Catalase/metabolismo , Proteínas de Transporte de Cátions/química , Proteínas de Transporte de Cátions/genética , Chaperonas Moleculares/química , Chaperonas Moleculares/genética , Dados de Sequência Molecular , Peroxidase/metabolismo , Folhas de Planta/metabolismo , Proteínas de Plantas/química , Proteínas de Plantas/genética , Raízes de Plantas/metabolismo , Superóxido Dismutase/metabolismo , Vitis/metabolismo
13.
Mitochondrial DNA B Resour ; 9(1): 163-167, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38274855

RESUMO

Petrocosmea qinlingensis is a protected wild plant endemic in China, inhabiting low-light limestone cliffs but the complete chloroplast genome has not been reported. In this study, we first sequenced and assembled the complete chloroplast genome of P. qinlingensis. The total size of this genome was 153,865 bp, including a large single-copy (LSC) region (84,737 bp), a small single-copy (SSC) region (18,244 bp), and two inverted repeats (IRs) regions (25,442 bp). This genome encoded 111 uniquegenes, consisted of 77 protein-coding genes, four ribosomal RNA genes, and 30 transfer RNA genes. Phylogenomic analysis based on the chloroplast protein-coding genes and showed that the genus Petrocosmea was the closest relative to Raphiocarpus. Our results will support further phylogeographic, population genetic studies of this species.

14.
Int J Nanomedicine ; 19: 5213-5226, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38855729

RESUMO

Introduction: The emergence and rapid spread of multidrug-resistant bacteria (MRB) caused by the excessive use of antibiotics and the development of biofilms have been a growing threat to global public health. Nanoparticles as substitutes for antibiotics were proven to possess substantial abilities for tackling MRB infections via new antimicrobial mechanisms. Particularly, carbon dots (CDs) with unique (bio)physicochemical characteristics have been receiving considerable attention in combating MRB by damaging the bacterial wall, binding to DNA or enzymes, inducing hyperthermia locally, or forming reactive oxygen species. Methods: Herein, how the physicochemical features of various CDs affect their antimicrobial capacity is investigated with the assistance of machine learning (ML) tools. Results: The synthetic conditions and intrinsic properties of CDs from 121 samples are initially gathered to form the raw dataset, with Minimum inhibitory concentration (MIC) being the output. Four classification algorithms (KNN, SVM, RF, and XGBoost) are trained and validated with the input data. It is found that the ensemble learning methods turn out to be the best on our data. Also, ε-poly(L-lysine) CDs (PL-CDs) were developed to validate the practical application ability of the well-trained ML models in a laboratory with two ensemble models managing the prediction. Discussion: Thus, our results demonstrate that ML-based high-throughput theoretical calculation could be used to predict and decode the relationship between CD properties and the anti-bacterial effect, accelerating the development of high-performance nanoparticles and potential clinical translation.


Assuntos
Antibacterianos , Carbono , Aprendizado de Máquina , Testes de Sensibilidade Microbiana , Antibacterianos/farmacologia , Antibacterianos/química , Carbono/química , Carbono/farmacologia , Pontos Quânticos/química , Humanos , Polilisina/química , Polilisina/farmacologia , Algoritmos
15.
BMC Genet ; 14: 113, 2013 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-24289265

RESUMO

BACKGROUND: Orange-spotted grouper, Epinephelus coioides, is one of the most valuable fish species in China. Commercial production of orange-spotted grouper could be increased by developing higher growth rates and improving commercially important traits. Information on genetic markers associated with quantitative trait loci (QTL) can be used in breeding programs to identify and select individuals carrying desired traits. A high-density genetic linkage map is the basis for QTL study, and multiplexed shotgun genotyping (MSG) facilitates the development of single nucleotide polymorphisms (SNPs) and genotyping. In this study, the first high-density genetic linkage maps for groupers were generated on the basis of the MSG method. RESULTS: The sex-averaged map contained a total of 4,608 SNPs, which spanned 1581.7 cM, with a mean distance between SNPs of 0.34 cM. The 4,608 SNPs were located in 2,849 unique locations on the linkage map, with an average inter-location space at 0.56 cM. There were 2,516 SNPs on the female map, and the number of unique locus was 1,902. However, the male map contained more numbers of SNP (2,939) and unique locations (2,005). The total length of the female and male maps was 1,370.9 and 1,335.5 cM, respectively. CONCLUSIONS: The high-resolution genetic linkage maps will be very useful for QTL analyses and marker-assisted selection (MAS) for economically important traits in molecular breeding of the orange-spotted grouper.


Assuntos
Mapeamento Cromossômico , Ligação Genética , Genoma/genética , Perciformes/genética , Animais , Feminino , Genótipo , Sequenciamento de Nucleotídeos em Larga Escala , Masculino , Polimorfismo de Nucleotídeo Único , Locos de Características Quantitativas
16.
Mol Biol Rep ; 40(6): 4015-31, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23269629

RESUMO

In plant and animal species FK506-binding protein (FKBP) family genes are important conserved genes and it is defined as the receptors of FK506 and rapamycin, where they work as PPIase and protein folding chaperones. FKBP have been isolated from Arabidopsis thaliana, Oryza sativa, and Zea mays. In grape, twenty-three genes containing the FK506-binding domain (FKBP_C) were first time identified by HMMER and blast research, they were classified into three groups and 17 out of the 23 genes were located on 11 chromosomes (Chr1, 3, 5, 7, 8, 14, 15, 16, 17, 18, and 19). The predicted gene expression pattern and semi-quantitative RT-PCR results revealed that five VvFKBPs were expressed in all tissues, while seven VvFKBPs were expressed only in some of the tissues, and the remaining VvFKBPs were not expressed in leaf, stem, inflorescences, flowers, and a mixture of fruit tissues (small, medium and big-sized fruits). Most of the VvFKBPs in grapevine 'Summer Black' were similar to those predicted one in 'Pinot Noir' except for VvFKBP16-4 and VvFKBPa. VvFKBP12, FaFKBP12 and PpFKBP12 were cloned from 'Summer Black', 'Sweet Charlie' and 'Xiahui 6'. Protein structure analysis confirmed that homologous genes have some differences during the process of protein structure construction. In this study, we characterized and verified 23 FKBP family genes in grapevine (Vitis vinifera L.) as well as their sub-cellular and chromosome location. The successful cloning of CDS regions and protein structural analysis of VvFKBP12, FaFKBP12, and PpFKBP12 can provide useful information for further study.


Assuntos
Genes de Plantas/genética , Família Multigênica , Proteínas de Plantas/genética , Proteínas de Ligação a Tacrolimo/genética , Proteínas de Ligação a Tacrolimo/metabolismo , Vitis/genética , Sequência de Aminoácidos , Cromossomos de Plantas/genética , Sequência Conservada/genética , Etiquetas de Sequências Expressas , Fragaria/genética , Perfilação da Expressão Gênica , Regulação da Expressão Gênica de Plantas , Dados de Sequência Molecular , Filogenia , Proteínas de Plantas/química , Estrutura Terciária de Proteína , Prunus/genética , Reprodutibilidade dos Testes , Alinhamento de Sequência , Frações Subcelulares/metabolismo , Proteínas de Ligação a Tacrolimo/química
17.
Food Res Int ; 163: 112161, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36596110

RESUMO

In this study, four wine grape polysaccharides were extracted and optimized by using an efficient ultrasound-assisted extraction. A three-level, three-factor Box Behnken Design (BBD) combining with response surface methodology (RSM) was employed to optimize the extraction conditions including ultrasonic power, ultrasonic time and liquid-to-solid ratio. Furthermore, their physicochemical structures, antioxidant and liver protective activity were investigated and compared. Results revealed that the functional groups and monosaccharide compositions of these grape polysaccharides collected from different varieties were similar. Nevertheless, their molecular weights, molar ratios of monosaccharide compositions and surface morphological features were different. And the antioxidant activities of these polysaccharides were screened by free radical scavenging test. 'Beichun' (BC) and 'Benni fuji' (BF) polysaccharides possessed better antioxidant function. Further, the in vivo evaluation indicated that the polysaccharides of BC and BF have a protective effect against myocardial I/R injury in mice by inhibiting myocardial necroptosis mediated by mitochondrial ROS generation. Therefore, BC and BF grapes have potential applications in the medical and food industries.


Assuntos
Antioxidantes , Vitis , Animais , Camundongos , Antioxidantes/farmacologia , Antioxidantes/química , Polissacarídeos/farmacologia , Polissacarídeos/química , Peso Molecular , Monossacarídeos/química
18.
Sci Rep ; 13(1): 13453, 2023 08 18.
Artigo em Inglês | MEDLINE | ID: mdl-37596395

RESUMO

To analyze the relationship between the composition of urinary stones and various influencing factors in the Enshi region. We used FT-IR to examine the composition of 1092 stone samples. Combined with the relevant clinical materials, the data were analyzed using both one-dimensional statistical methods and multivariate statistical methods. The study included 1092 stone samples, classified as follows: 457 (41.8%) with a single component, 453 (41.5%) with two components, 149 (13.6%) with three components, and 33 (3.0%) with four components. Stones were categorized into five types: Calcium Oxalate (CaOx) (76.4%), carbapatite (CaP) (9.3%), Struvite (ST) (8.3%), Uric Acid (UA) (4.9%), and Others (1.0%). Age, gender, urinary tract infection (UTI), family history of urinary stones (FH), hyperuricemia (HUA) and stone location were significantly associated with stone type. Logistic regression revealed that females and UTI were relative risk factors for predicting CaP and ST, while FH and HUA were relative risk factors for predicting UA. Our study indicates that the overall composition of urinary tract stones in the Enshi region is consistent with that of the entire China. Additionally, the predisposing factors for stone formation vary in terms of gender, age, FH, UTI, hyperuricemia HUA, and stone location.


Assuntos
Hiperuricemia , Cálculos Urinários , Urolitíase , Feminino , Humanos , Espectroscopia de Infravermelho com Transformada de Fourier , População do Leste Asiático , Minorias Étnicas e Raciais , Etnicidade , Estudos Retrospectivos , Grupos Minoritários
19.
Plant Signal Behav ; 18(1): 2245616, 2023 12 31.
Artigo em Inglês | MEDLINE | ID: mdl-37573563

RESUMO

Ribosome biogenesis is a fundamental process in eukaryotic cells. NOTCHLESS (NLE) is involved in 60S ribosome biogenesis in yeast, but its role in Arabidopsis (A. thaliana) remains exclusive. Here, we found that Arabidopsis NLE (AtNLE) is highly conservative in phylogeny, which encoding a WD40-repeat protein. AtNLE is expressed in actively dividing tissues. AtNLE-GFP is localized in the nucleus. AtNLE physically interacts with the MIDAS domain of AtMDN1, a protein involved in the biogenesis of the 60S ribosomal subunit in Arabidopsis. The underexpressing mutant nle-2 shows short roots and reduced cell number in the root meristem. In addition, the null mutant nle-1 is embryo lethal, and defective embryos are arrested at the early globular stage. This work suggests that AtNLE interacts with AtMDN1, and AtNLE functions in root and embryo development.


Assuntos
Proteínas de Arabidopsis , Arabidopsis , Arabidopsis/metabolismo , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Meristema/genética , Meristema/metabolismo , Núcleo Celular/metabolismo , Desenvolvimento Embrionário
20.
iScience ; 26(5): 106656, 2023 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-37182101

RESUMO

Acute kidney injury (AKI) is a serious disease with no effective treatment. Abnormal opening of mitochondrial permeability transition pore (MPTP) is an important pathological process in ischemia reperfusion injury (IRI), the key factor of AKI. It is essential to elucidate MPTP regulation mechanism. Here, we identified mitochondrial ribosomal protein L7/L12 (MRPL12) specifically binds to adenosine nucleotide translocase 3 (ANT3) under normal physiological conditions, stabilizes MPTP and maintains mitochondrial membrane homeostasis in renal tubular epithelial cells (TECs). During AKI, MRPL12 expression was significantly decreased in TECs, and MRPL12-ANT3 interaction was reduced, leading to ANT3 conformation change, MPTP abnormal opening, and cell apoptosis. Importantly, MRPL12 overexpression protected TECs from MPTP abnormal opening and apoptosis during hypoxia/reoxygenation (H/R). Our results suggest MRPL12-ANT3 axis involves in AKI by regulating MPTP, and MRPL12 could be potential intervention target for treatment of AKI.

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