Recently,small nucleolar RNAs(snoRNAs)have transcended the genomic“noise”to emerge as pivotal molecular markers due to their essential roles in tumor progression.Substantial evidence indicates a strong association b...Recently,small nucleolar RNAs(snoRNAs)have transcended the genomic“noise”to emerge as pivotal molecular markers due to their essential roles in tumor progression.Substantial evidence indicates a strong association between snoRNAs and critical clinical features such as tumor pathology and drug resistance.Historically,snoRNA research has concentrated on two classical mechanisms:2'-O-ribose methylation and pseudouridylation.This review specifically summarizes the novel regulatory mechanisms and functional patterns of snoRNAs in tumors,encompassing transcriptional,post-transcriptional,and post-translational regulation.We further discuss the synergistic effect between snoRNA host genes(SNHGs)and snoRNAs in tumor progression.More importantly,snoRNAs extensively contribute to the development of tumor cell resistance as oncogenes or tumor suppressor genes.Accordingly,we provide a comprehensive review of the clinical diagnosis and treatment associated with snoRNAs and explore their significant potential as novel drug targets.展开更多
目的探讨snoRNA来源的piRNA在乳腺癌中对FOXO3a基因的影响。方法将5个化学合成的pi-snoRNAs(pi-sno44/74/75/78/81)分别转入MDA-MB-231乳腺癌细胞后收样提取总RNA,检测每个piRNA对FOXO3a m RNA水平的影响,找出对FOXO3a作用最明显的piRNA...目的探讨snoRNA来源的piRNA在乳腺癌中对FOXO3a基因的影响。方法将5个化学合成的pi-snoRNAs(pi-sno44/74/75/78/81)分别转入MDA-MB-231乳腺癌细胞后收样提取总RNA,检测每个piRNA对FOXO3a m RNA水平的影响,找出对FOXO3a作用最明显的piRNA,验证其对FOXO3a蛋白水平的影响;收集2016年3月~2016年10月在我科行乳腺根治手术的乳腺癌患者术后新鲜肿瘤及瘤旁标本28对,检测其中pi-sno81、sno81及FOXO3a的表达情况;应用典型相关分析对pi-sno81、sno81及FOXO3a在乳腺癌及癌旁乳腺组织中的表达情况进行相关性分析,了解pi-sno81与FOXO3a的相关性。结果 qRT-PCR检测发现,FOXO3a基因表达被pisno44/74/75/81上调;其中pi-sno81上调FOXO3a最明显,且pi-sno81明显上调了FOXO3a蛋白水平;FOXO3a在乳腺癌中呈低表达;相关性分析发现,pi-sno81在乳腺癌及癌旁乳腺组织中的表达与FOXO3a在乳腺癌及癌旁乳腺组织中的表达成正相关(P<0.001,Corr=0.835)。结论 snoRNA来源的pi-sno81能上调乳腺癌细胞中FOXO3a基因的表达,并可能通过影响FOXO3a的表达影响乳腺癌细胞的生长。展开更多
Through computer screening of Genbank and experimental analysis a novel snoRNA, termed Z25, was first identified from mammals. Z25 snoRNA is 69 nucleotide in length, possessing typical boxC/D and terminal repeat seque...Through computer screening of Genbank and experimental analysis a novel snoRNA, termed Z25, was first identified from mammals. Z25 snoRNA is 69 nucleotide in length, possessing typical boxC/D and terminal repeat sequence, a 11 nt long sequence complementarity to 18S rRNA implies that Z25 snoRNA is a 2′ O ribose methylation guide at A1678 (human coordinate) of 18S rRNA. Z25 snoRNA is encoded by the fifth intron of human, mouse and rat nucleolin genes that have been found as the host genes for U20 and U23 snoRNA.展开更多
[ Objective] To identify a novel snoRNA gene in Arabidopsis thalianan. [ Method ] Genome sequence of Arabidopsis thalianan was screened by using bioinformatics methods, and the sequence structure, organization form an...[ Objective] To identify a novel snoRNA gene in Arabidopsis thalianan. [ Method ] Genome sequence of Arabidopsis thalianan was screened by using bioinformatics methods, and the sequence structure, organization form and function of typical candidate gene were analyzed. [ Result] The identified snR95 box H/ACA snoRNA had conservative component and structural features of box C/D snoRNA family, possessed two more than 10 nt long rRNA antisense elements. The result revealed that the novel snoRNA is a partial counterpart of the rice Z270, named box C/D snoRNA -AthZ270. [ Conclusion ] Z270 snoRNA in Arabidopsis thalianan has different function with common snoRNA.展开更多
基金supported by grants from the National Natural Science Foundation of China(81872905,82272915,and 82073884)the Project of the Fourth Batch of Science and Technology Plan of Liaoning Province,China(Grant No.:2021JH210300133)+3 种基金Science and Technology Innovation Team Project of China Medical University,China(Grant No.:CXTD2022007)the Supporting the Highquality Development of Science and Technology Funding Projects at China Medical University(Grant No.:2022011963-JH2/202)China Postdoctoral Science Foundation(Grant No.:2023MD734246)Liaoning Province Natural Science Foundation Joint Fund(Grant No.:2023-MSLH-396)。
文摘Recently,small nucleolar RNAs(snoRNAs)have transcended the genomic“noise”to emerge as pivotal molecular markers due to their essential roles in tumor progression.Substantial evidence indicates a strong association between snoRNAs and critical clinical features such as tumor pathology and drug resistance.Historically,snoRNA research has concentrated on two classical mechanisms:2'-O-ribose methylation and pseudouridylation.This review specifically summarizes the novel regulatory mechanisms and functional patterns of snoRNAs in tumors,encompassing transcriptional,post-transcriptional,and post-translational regulation.We further discuss the synergistic effect between snoRNA host genes(SNHGs)and snoRNAs in tumor progression.More importantly,snoRNAs extensively contribute to the development of tumor cell resistance as oncogenes or tumor suppressor genes.Accordingly,we provide a comprehensive review of the clinical diagnosis and treatment associated with snoRNAs and explore their significant potential as novel drug targets.
文摘目的探讨snoRNA来源的piRNA在乳腺癌中对FOXO3a基因的影响。方法将5个化学合成的pi-snoRNAs(pi-sno44/74/75/78/81)分别转入MDA-MB-231乳腺癌细胞后收样提取总RNA,检测每个piRNA对FOXO3a m RNA水平的影响,找出对FOXO3a作用最明显的piRNA,验证其对FOXO3a蛋白水平的影响;收集2016年3月~2016年10月在我科行乳腺根治手术的乳腺癌患者术后新鲜肿瘤及瘤旁标本28对,检测其中pi-sno81、sno81及FOXO3a的表达情况;应用典型相关分析对pi-sno81、sno81及FOXO3a在乳腺癌及癌旁乳腺组织中的表达情况进行相关性分析,了解pi-sno81与FOXO3a的相关性。结果 qRT-PCR检测发现,FOXO3a基因表达被pisno44/74/75/81上调;其中pi-sno81上调FOXO3a最明显,且pi-sno81明显上调了FOXO3a蛋白水平;FOXO3a在乳腺癌中呈低表达;相关性分析发现,pi-sno81在乳腺癌及癌旁乳腺组织中的表达与FOXO3a在乳腺癌及癌旁乳腺组织中的表达成正相关(P<0.001,Corr=0.835)。结论 snoRNA来源的pi-sno81能上调乳腺癌细胞中FOXO3a基因的表达,并可能通过影响FOXO3a的表达影响乳腺癌细胞的生长。
文摘Through computer screening of Genbank and experimental analysis a novel snoRNA, termed Z25, was first identified from mammals. Z25 snoRNA is 69 nucleotide in length, possessing typical boxC/D and terminal repeat sequence, a 11 nt long sequence complementarity to 18S rRNA implies that Z25 snoRNA is a 2′ O ribose methylation guide at A1678 (human coordinate) of 18S rRNA. Z25 snoRNA is encoded by the fifth intron of human, mouse and rat nucleolin genes that have been found as the host genes for U20 and U23 snoRNA.
基金Supported by Natural Science Project Establishment Subject of Jiangxi Science & Technology Normal University(KY2008ZY03 )Teaching Research Provincial Project Establishment Subject of Higher Education of Jiangxi Province (JXJG-13-29)~~
文摘[ Objective] To identify a novel snoRNA gene in Arabidopsis thalianan. [ Method ] Genome sequence of Arabidopsis thalianan was screened by using bioinformatics methods, and the sequence structure, organization form and function of typical candidate gene were analyzed. [ Result] The identified snR95 box H/ACA snoRNA had conservative component and structural features of box C/D snoRNA family, possessed two more than 10 nt long rRNA antisense elements. The result revealed that the novel snoRNA is a partial counterpart of the rice Z270, named box C/D snoRNA -AthZ270. [ Conclusion ] Z270 snoRNA in Arabidopsis thalianan has different function with common snoRNA.
