Genome-Wide Identification and Expression Analysis of the GSK3 Gene Family in Sunflower under Various Abiotic Stresses

Genes in the glycogen synthase kinase 3(GSK3)family are essential in regulating plant response to stressful conditions.This study employed bioinformatics to uncover the GSK3 gene family from the sunflower genome database.The expressions of GSK3 genes in different tissues and stress treatments,such as salt,drought,and cold,were assessed using transcriptome sequencing and quantitative real-time PCR(qRT-PCR).The study results revealed that the 12 GSK3 genes of sunflower,belonging to four classes(Classes I–IV),contained the GSK3 kinase domain and 11–13 exons.The majority of GSK3 genes were highly expressed in the leaf axil and flower,while their expression levels were relatively lower in the leaf.As a result of salt stress,six of the GSK3 genes(HaSK11,HaSK22,HaSK23,HaSK32,HaSK33,and HaSK41)displayed a notable increase in expression,while HaSK14 and HaSK21 experienced a significant decrease.With regard to drought stress,five of the GSK3 genes(HaSK11,HaSK13,HaSK21,HaSK22,and HaSK33)experienced a remarkable rise in expression.When exposed to cold stress,seven of the GSK3 genes(HaSK11,HaSK12,HaSK13,HaSK32,HaSK33,HaSK41,and HaSK42)showed a substantial increase,whereas HaSK21 and HaSK23 had a sharp decline.This research is of great importance in understanding the abiotic resistance mechanism of sunflowers and developing new varieties with improved stress resistance.

Re-Exploring Biomarkers and Therapeutic Targets in Primary Melanoma Patients: Insights from Network-Based Analysis of Microarray Data

Objective To identify novel biomarkers and therapeutic targets for primary melanoma using network-based microarray data analysis.Methods Eligible microarray datasets from the Gene Expression Omnibus(GEO)database were used to identify differentially expressed genes(DEGs).The protein-protein interaction(PPI)network,Gene Ontology(GO),and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment analyses were performed to identify hub genes and pathways that might affect the survival of melanoma patients.Immunohistochemistry results obtained from the Human Protein Atlas(HPA)database confirmed the protein expression levels of hub genes.The Cancer Genome Atlas(TCGA)database was used to further verify the gene expression levels and conduct survival analysis.Results Three microarray datasets(GSE3189,GSE15605,and GSE46517)containing 122 melanoma and 30 normal skin tissue samples were included.A total of 262 common differentially expressed genes(cDEGs)were identified based on three statistical approaches(Fisher’s method,the random effects model(REM),and vote counting)with strict criteria.Of these,two upregulated genes,centromere protein F(CENPF)and pituitary tumortransforming gene 1(PTTG1),were selected as hub genes.HPA and TCGA database analyses confirmed that CENPF and PTTG1 were overexpressed in melanoma.Survival analysis showed that high expression levels of CENPF were significantly correlated with decreased overall survival(OS)(P=0.028).Conclusion The expression level of CENPF was significantly upregulated in melanoma and correlated with decreased OS.Thus,CENPF may represent a novel biomarker and therapeutic target for melanoma patients.

Manipulating nonlinear exciton polaritons in an atomically-thin semiconductor with artificial potential landscapes

Exciton polaritons in atomically thin transition-metal dichalcogenide microcavities provide a versatile platform for advancing optoelectronic devices and studying the interacting Bosonic physics at ambient conditions.Rationally engineering the favorable properties of polaritons is critically required for the rapidly growing research.Here,we demonstrate the manipulation of nonlinear polaritons with the lithographically defined potential landscapes in monolayer WS_(2)microcavities.The discretization of photoluminescence dispersions and spatially confined patterns indicate the deterministic on-site localization of polaritons by the artificial mesa cavities.Varying the trapping sizes,the polariton-reservoir interaction strength is enhanced by about six times through managing the polariton–exciton spatial overlap.Meanwhile,the coherence of trapped polaritons is significantly improved due to the spectral narrowing and tailored in a picosecond range.Therefore,our work not only offers a convenient approach to manipulating the nonlinearity and coherence of polaritons but also opens up possibilities for exploring many-body phenomena and developing novel polaritonic devices based on 2D materials.

细菌群体感应信号对宿主免疫调节机制的研究进展

群体感应(QS)是细菌通过感知特定群体感应信号分子(QSSM)的浓度阈值,以调节菌群基因表达,改变细菌及菌群行为的系统。这种调节机制在细菌与宿主的相互作用中也发挥重要作用。细菌释放QSSM被宿主感知,启动相关信号通路,激活或抑制基因表达。目前研究显示,宿主细胞的细胞膜、细胞质、细胞器和细胞核等参与QSSM刺激的多种信号通路,介导宿主的相关免疫应答。本文将对QSSM的分类、作用宿主的途径以及作用结果的研究进展进行综述。