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981.
Man Tian Meng Chen Yuling Bao Changdi Xu Qiaozhi Qin Wenxin Zhang Yuting He Qi Shao 《Journal of cellular biochemistry》2019,120(8):13853-13860
Bronchial asthma, a common chronic respiratory disease in children, is traditionally regarded as a noninfectious disease. Current hypotheses, however, argue that asthma can be caused by microbial infection. We, therefore, hypothesize that a variety of microbes are more commonly found in the sputum of children with asthma, and these microbes may contribute to the occurrence and development of asthma. The present study proposes to use metagenomic approach to explore microbial diversity and to identify the microbial community characteristics of sputum from children with asthma. We found that microbial communities in the sputum of children differed significantly between asthmatics and controls. Kruskal-Wallis testing showed that 16 phyla, 104 genera, and 159 species were significantly downregulated, whereas two phyla including Platyhelminthes phylum and Chordata phylum, two genera including Spirometra genus and Homo sapiens, and the Spirometra erinaceieuropaei species were significantly upregulated in asthma patients compared with controls (P < 0.05). Among them, H. sapiens and S. erinaceieuropaei exhibited 2.3- and 2.0-fold overabundance in asthmatics vs controls, respectively. Meanwhile, metastats assay demonstrated that 31 phyla, 400 genera, and 813 species were significantly downregulated, whereas two phyla, 10 genera, and 16 species were significantly upregulated in asthma patients compared with controls (P < 0.05). Among them, Tetrahymena thermophila and Candidatus Zinderia insecticola exhibited 4.7-fold overabundance in asthmatics vs controls. Our study establishes a link between microbial infection and the mechanisms leading to asthma development, which will be useful for developing novel diagnostic biomarkers and aiding in the prevention and control of asthma. 相似文献
982.
Lung cancer is one of the most frequently diagnosed malignant tumors and the main reason for cancer-related death around the world, whereas nonsmall cell lung cancer that consists two subtypes: lung adenocarcinoma (LUAD) and squamous cell carcinoma (LUSC) is responsible for an estimated 85% of all lung cancers. The current study aimed to explore gene expression and methylation differences between LUAD and LUSC. EdgeR was used to identify differentially regulated genes between normal and cancer in the LUAD and LUSC extracted from The Cancer Genome Atlas (TCGA), respectively, whereas SAM was used to find genes with differential methylation between normal and cancer in the LUAD and LUSC, respectively. Finally, Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis was performed to analyze the function which these genes enriched in. A total of 391 genes with opposite methylation patterns in LUAD and LUSC and four functional pathways were obtained (false discovery rate (FDR) < 0.1). These pathways mainly included fat digestion and absorption, phenylalanine metabolism, bile secretion, and so on, which were related to the airframe nutrition metabolic pathway. Moreover, two genes CTSE (cathepsin E) and solute carrier family 5 member 7 (SLC5A7) were also found, among which CTSE was overexpressed and hypomethylated in LUAD corresponding to normal lung tissues, whereas SLC5A7 showed the opposite in LUAD. In conclusion, this study investigated the differences between the gene expression and methylation patterns in LUAD and LUSC, and explored their different biological characteristics. Further understanding of these differences may promote the discovery and development of new, accurate strategies for the prevention, diagnosis, and treatment of lung cancer. 相似文献
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Ai Jin Rujuan Bao Michael Roth Li Liu Xudong Yang Xuemei Tang Xiaojun Yang Qingzhu Sun Shemin Lu 《Journal of cellular physiology》2019,234(11):21153-21165
The deregulated cross-talk between airway epithelial cells with subepithelial fibroblasts during inflammation drives the pathogenesis of asthma. Bioinformatics analysis and luciferase activity assay suggested that B cell lymphoma-2 (BCL2) and CXC ligand 12 (CXCL12) are potential targets of miR-23a. The aim of this study was to elucidate the effect of microRNA-23a (miR-23a) on BCL2, and CXCL12 in asthma. In E3 rats, miR-23a was upregulated in lung tissues after antigen-induced pulmonary inflammation during acute and chronic inflammation. Immunohistochemistry showed downregulation of BCL2 in the epithelium and of CXCL12 in subepithelial fibroblasts and smooth muscle cells. Treatment of isolated cells with miR-23a mimic or inhibitor modified the expression of BCL2 and of CXCL12 in the expected cell type-specific manner. Moreover, in epithelial cells, interleukin-4 upregulated miR-23a expression and thereby decreased the expression of BCL2, while increasing the caspase-3 expression, which was followed by apoptosis. In fibroblasts, the expression of miR-23a was increased by thymic stromal lymphopoietin (TSLP). Consequently, the CXCL12 expression was abrogated. The phosphorylation of CREB was also downregulated by TSLP through the action of miR-23a. This study describes a novel mechanism, where miR-23a is an important cell type-specific regulator for asthma-associated airway wall remodeling parameter. Thus, miR-23a may present a potential new target for the therapy of asthma. 相似文献
986.
Role of nuclear factor-κB pathway in the transition of mouse secondary follicles to antral follicles
Jun-Jie Xu Guang Wang Xin Luo Li-Jing Wang Yongping Bao Xuesong Yang 《Journal of cellular physiology》2019,234(12):22565-22580
Nuclear factor-κB (NF-κB) signaling is involved in regulating a great number of normal and abnormal cellular events. However, little is known about its role in ovarian follicular development. In this study, we found NF-κB signaling is activated during the transition from secondary to antral follicles. We generated active NF-κB mice and found that antral follicular numbers were higher than wild-type ovaries. Activation of NF-κB signaling could enhance granulosa cell proliferation and regress granulosa cell apoptosis of mouse ovarian follicles. Higher follicle-stimulating hormone receptor (FSHR) and luteinizing hormone/choriogonadotropin receptor expressions were observed in active NF-κB ovaries compared to wild type. Furthermore, we confirmed that NF-κB signaling was indeed involved in the granulosa cell viability and proliferation through FSHR using COV434 cell line. This is the first experimental evidence that NF-κB signaling is implicated in the control of follicular development through FSHR and its corresponding target molecules, which might be achieved by targeting proliferation and apoptosis in follicular granulosa cells. 相似文献
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Xiao Jun Liu Bao Yao Yingyin Guo Zifeng Jia Haiyan Kong Lingrang Zhang Aimin Ma Wujun Ni Zhongfu Xu Shengbao Lu Fei Jiao Yuannian Yang Wuyun Lin Xuelei Sun Silong Lu Zefu Gao Lifeng Zhao Guangyao Cao Shuanghe Chen Qian Zhang Kunpu Wang Mengcheng Wang Meng Hu Zhaorong Guo Weilong Li Guoqiang Ma Xin Li Junming Han Fangpu Fu Xiangdong Ma Zhengqiang Wang Daowen Zhang Xueyong Ling Hong-Qing Xia Guangmin Tong Yiping Liu Zhiyong He Zhonghu Jia Jizeng Chong Kang 《中国科学:生命科学英文版》2022,65(9):1718-1775
Science China Life Sciences - Bread wheat (Triticum aestivum L.) is a major crop that feeds 40% of the world’s population. Over the past several decades, advances in genomics have led to... 相似文献
990.
Chen Zhe Bao Linlin Zhu Bin Fu Hua Zhu Shuangli Ji Tianjiao Xue Ying Liu Chuan Wang Xurong Li Fengdi Lv Qi Qi Feifei Yu Pin Deng Wei Xu Wenbo Qin Chuan Liu Hongrong Jin Qi 《中国科学:生命科学英文版》2022,65(12):2517-2526
Science China Life Sciences - Enterovirus A71 (EV-A71) causes major outbreaks of hand, foot, and mouth disease (HFMD) in many countries, most frequently affecting children, and a small proportion... 相似文献