Evidence showed that N6-methyladenosine(m^(6)A)modification plays a pivotal role in influencing RNA fate and is strongly associated with cell growth and developmental processes in many species.However,no information r...Evidence showed that N6-methyladenosine(m^(6)A)modification plays a pivotal role in influencing RNA fate and is strongly associated with cell growth and developmental processes in many species.However,no information regarding m^(6)A modification in Eimeria tenella is currently available.In the present study,we surveyed the transcriptome-wide prevalence of m^(6)A in sporulated oocysts and unsporulated oocysts of E.tenella.Methylated RNA immunoprecipitation sequencing(MeRIP-seq)analysis showed that m^(6)A modification was most abundant in the coding sequences,followed by stop codon.There were 3,903 hypermethylated and 3,178 hypomethylated mRNAs in sporulated oocysts compared with unsporulated oocysts.Further joint analysis suggested that m^(6)A modification of the majority of genes was positively correlated with mRNA expression.The mRNA relative expression and m^(6)A level of the selected genes were confirmed by quantitative reverse transcription PCR(RT-qPCR)and MeRIP-qPCR.GO and KEGG analysis indicated that differentially m^(6)A methylated genes(DMMGs)with significant differences in mRNA expression were closely related to processes such as regulation of gene expression,epigenetic,microtubule,autophagy-other and TOR signaling.Moreover,a total of 96 DMMGs without significant differences in mRNA expression showed significant differences at protein level.GO and pathway enrichment analysis of the 96 genes showed that RNA methylation may be involved in cell biosynthesis and metabolism of E.tenella.We firstly present a map of RNA m^(6)A modification in E.tenella,which provides significant insights into developmental biology of E.tenella.展开更多
为了研究堆型艾美耳球虫(Eimeria acervulina)裂殖子的外分泌蛋白对马-达氏牛肾(MDBK)细胞凋亡的抑制作用,本试验建立Transwell小室间接共培养体系,即将E.acervulina裂殖子与MDBK细胞共培养,采用流式细胞术分别检测共培养1.5、3和6 h M...为了研究堆型艾美耳球虫(Eimeria acervulina)裂殖子的外分泌蛋白对马-达氏牛肾(MDBK)细胞凋亡的抑制作用,本试验建立Transwell小室间接共培养体系,即将E.acervulina裂殖子与MDBK细胞共培养,采用流式细胞术分别检测共培养1.5、3和6 h MDBK细胞的凋亡情况,利用液相色谱串联质谱(LC-MS/MS)对共培养6 h后的细胞上清液中的成分进行鉴定。结果显示,1.5、3和6 h共培养组MDBK细胞的总细胞凋亡率分别为(5.92±0.19)%、(8.13±0.32)%和(11.57±0.37)%,与对照组相比,总细胞凋亡率均极显著降低(P<0.01)。LC-MS/MS分析共鉴定到65个E.acervulina的外分泌蛋白,包括热休克蛋白、微线蛋白、能量代谢酶分子、蛋白磷酸酶分子和未知功能蛋白等。结果表明,E.acervulina裂殖子外分泌蛋白可抑制MDBK细胞凋亡,具体哪种蛋白在抑制细胞凋亡中发挥作用有待后续进一步研究。展开更多
基金supported by the National Natural Science Foundation of China(31902298)the Shanxi Provincial Key Research and Development Program,China(2022ZDYF126)+2 种基金the Fund for Shanxi“1331 Project”,China(20211331-13)the Science and Technology Innovation Program of Shanxi Agricultural University,China(2017YJ10)the Special Research Fund of Shanxi Agricultural University for High-level Talents,China(2021XG001)。
文摘Evidence showed that N6-methyladenosine(m^(6)A)modification plays a pivotal role in influencing RNA fate and is strongly associated with cell growth and developmental processes in many species.However,no information regarding m^(6)A modification in Eimeria tenella is currently available.In the present study,we surveyed the transcriptome-wide prevalence of m^(6)A in sporulated oocysts and unsporulated oocysts of E.tenella.Methylated RNA immunoprecipitation sequencing(MeRIP-seq)analysis showed that m^(6)A modification was most abundant in the coding sequences,followed by stop codon.There were 3,903 hypermethylated and 3,178 hypomethylated mRNAs in sporulated oocysts compared with unsporulated oocysts.Further joint analysis suggested that m^(6)A modification of the majority of genes was positively correlated with mRNA expression.The mRNA relative expression and m^(6)A level of the selected genes were confirmed by quantitative reverse transcription PCR(RT-qPCR)and MeRIP-qPCR.GO and KEGG analysis indicated that differentially m^(6)A methylated genes(DMMGs)with significant differences in mRNA expression were closely related to processes such as regulation of gene expression,epigenetic,microtubule,autophagy-other and TOR signaling.Moreover,a total of 96 DMMGs without significant differences in mRNA expression showed significant differences at protein level.GO and pathway enrichment analysis of the 96 genes showed that RNA methylation may be involved in cell biosynthesis and metabolism of E.tenella.We firstly present a map of RNA m^(6)A modification in E.tenella,which provides significant insights into developmental biology of E.tenella.
