Article(id=1241023933630173773, tenantId=1146029695717560320, journalId=1227665162245664772, issueId=1241023927812682133, articleNumber=null, orderNo=null, doi=10.20043/j.cnki.MPM.202406423, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1719072000000, receivedDateStr=2024-06-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773812762887, onlineDateStr=2026-03-18, pubDate=1739116800000, pubDateStr=2025-02-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773812762887, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773812762887, creator=13701087609, updateTime=1773812762887, updator=13701087609, issue=Issue{id=1241023927812682133, tenantId=1146029695717560320, journalId=1227665162245664772, year='2025', volume='52', issue='3', pageStart='385', pageEnd='576', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773812761500, creator=13701087609, updateTime=1773812858867, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241024336258200259, tenantId=1146029695717560320, journalId=1227665162245664772, issueId=1241023927812682133, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241024336258200260, tenantId=1146029695717560320, journalId=1227665162245664772, issueId=1241023927812682133, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=533, endPage=540, ext={EN=ArticleExt(id=1241023936163533470, articleId=1241023933630173773, tenantId=1146029695717560320, journalId=1227665162245664772, language=EN, title=Study on the role of N
6-methyl adenosine in arsenic induced tau protein phosphorylation, columnId=1228016572065837304, journalTitle=Modern Preventive Medicine, columnName=Experimental Technology and Applications, runingTitle=null, highlight=null, articleAbstract=
Objective To explore whether N6-methyl adenosine (m6A) is involved in arsenic-induced tau protein phosphorylation.
Methods Neuroblastoma (SH-SY5Y) cells were treated with 0, 1, 5, 10 μmol/L sodium arsenate for 24 hours. Then, the intracellular m6A level was detected, the mRNA expression levels of m6A-related enzymes in the cells were detected by qPCR,and the total tau protein expression level, phosphorylated tau protein level and m6A-related enzyme expression levels in the cells were detected by Western Blot. After inhibiting the intracellular m6A level with 3-deoxyadenosines, the changes in the intracellular m6A level and tau protein phosphorylation level were verified. SPSS was used for analysis of variance of the experimental results, with α=0.05.
Results After SH-SY5Y cells were treated with various concentrations of arsenic for 24 hours, there was no significant difference in the total tau protein level in the cells (F=3.047, P > 0.05). After the cells were treated with 5 μmol/L arsenic for 24 hours, the intracellular m6A level increased by 31.4% (F=4.511, P < 0.05), and the phosphorylated tau protein (at site T231) level increased by 42.6% (95%CI: 0.165-0.689, P < 0.01). The level of phosphorylated tau protein (at sites S202 + T205) increased with the increase in arsenic concentration, and the highest increase was 55.2%(95%CI: 0.050-0.409, P < 0.05) after treatment with 10 μmol/L arsenic for 24 hours. As the arsenic treatment concentration increased, the METTL3 mRNA expression in the cells increased, with the highest increase of 73.2% (95%CI: 0.201-1.423, P < 0.05) at a concentration of 10 μmol/L. The mRNA expression levels of METTL14, WTAP and FTO decreased, and they decreased to 65.4% (95%CI:-1.055 to-0.337, P < 0.01), 64.8% (95%CI:-0.389 to -0.111, P < 0.05) and 85.4% (95%CI: -0.030 to -0.010, P < 0.01) of the control group respectively after treatment with 10 μmol/L arsenic. The ALKBH5 mRNA expression first increased and then decreased, with an increase of 27.5% (95%CI: 0.033-0.147, P < 0.05) after treatment with 1 μmol/L arsenic for 24 hours; while it decreased by 30.7% (95%CI:-1.62 to -0.038, P < 0.01) after treatment with 10 μmol/L arsenic. Arsenic treatment led to an increase in METTL3 protein expression, with the highest increase of 107.1% (95%CI: 0.331-1.009, P < 0.01) after treatment with 5 μmol/L arsenic for 24 hours, while the protein expression levels of METTL14, WTAP and ALKBH5 decreased to 20.4% (95%CI: -0.788 to -0.509, P < 0.001), 23.5% (95%CI:-1.371 to -0.685, P <0.001) and 49.2% (95%CI:-0.423 to -0.183, P < 0.001) of the control group respectively after treatment of SH-SY5Y cells with 10 μmol/L arsenic for 24 hours. The FTO protein expression level showed a decreasing trend with the increase in arsenic concentration, with the lowest decrease of 45.3% (95%CI:-0.709 to -0.413, P < 0.001) after treatment with 10 μmol/L arsenic for 24 hours. After DAA inhibited the intracellular m6A level, the phosphorylated tau protein levels were significantly decreased (P < 0.05).
Conclusion Arsenic can increase the m6A level in SH-SY5Y cells by increasing the expression level of the m6A methylase METTL3 and decreasing the expression levels of the m6A demethylases FTO and ALKBH5, thereby inducing the phosphorylation of tau protein in the cells.
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6甲基腺苷在砷诱导tau蛋白磷酸化中的作用研究, columnId=1228016572288135432, journalTitle=现代预防医学, columnName=实验技术及其应用, runingTitle=null, highlight=null, articleAbstract=
目的 探究N6甲基腺苷(N6-methyladenosine, m6A)是否参与砷诱导的tau蛋白磷酸化。
方法 采用0、1、5和10 μmol/L亚砷酸钠处理神经母细胞瘤(SH-SY5Y)细胞24 h后,检测细胞内m6A水平,qPCR检测细胞内m6A相关酶mRNA的表达量,Western Blot检测细胞内总tau蛋白表达量、磷酸化tau蛋白水平和m6A相关酶的表达量。利用3-脱氮腺苷抑制细胞内m6A水平后,验证细胞内m6A水平和tau蛋白磷酸化水平的变化。采用SPSS对实验结果进行方差分析,检验水准α=0.05。
结果 各浓度砷处理SH-SY5Y细胞24 h后,细胞内总tau蛋白水平差异不显著(F=3.047, P>0.05)。5 μmol/L砷处理细胞24 h后,细胞内m6A水平上升31.4%(F=4.511, P<0.05),磷酸化tau蛋白(T231位点)水平上升42.6%(95%CI: 0.165~0.689, P<0.01)。磷酸化tau蛋白(S202+T205位点)水平随砷浓度的提高而上升,最高在10 μmol/L浓度砷处理24 h后上升55.2%(95%CI: 0.050~0.409, P<0.05)。随着砷处理浓度增加,细胞内METTL3 mRNA表达增加,10 μmol/L浓度下最高增加73.2%(95%CI: 0.201~1.423, P<0.05)。METTL14、WTAP和FTO mRNA表达量下降,在10 μmol/L砷处理后分别降至对照组的65.4%(95%CI: -1.055~-0.337, P<0.01)、64.8%(95%CI: -0.389~-0.111, P<0.05)和85.4%(95%CI: -0.030~-0.010, P<0.01)。ALKBH5 mRNA表达先升高后降低,在1 μmol/L砷处理24 h后表达量增加27.5%(95%CI: 0.033~0.147, P<0.05);而10 μmol/L浓度砷处理后降低30.7%(95%CI: -1.62~-0.038, P<0.01)。砷处理导致METTL3蛋白表达增高,最高在5 μmol/L浓度砷处理24 h后增加107.1%(95%CI: 0.331~1.009, P<0.01),而METTL14、WTAP和ALKBH5蛋白表达量在10 μmol/L砷处理SH-SY5Y细胞24 h后分别下降至对照组的20.4%(95%CI:-0.788~-0.509, P<0.001)、23.5%(95%CI: -1.371~-0.685, P<0.001)和49.2%(95%CI: -0.423~-0.183, P<0.001)。FTO蛋白表达量随砷浓度的提高呈下降趋势,最低在10 μmol/L砷处理24 h后降低45.3%(95%CI: -0.709~-0.413, P<0.001)。DAA抑制细胞内m6A水平后,磷酸化tau蛋白水平均显著降低(P<0.05)。
结论 砷可以通过增加m6A甲基化酶METTL3的表达量、降低m6A去甲基化酶FTO和ALKBH5的表达量,提高SH-SY5Y细胞内的m6A水平,进而诱导细胞内tau蛋白发生磷酸化。
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本刊刊出的所有文章不代表中华预防医学会和本刊编委会的观点,除非特别声明。, copyrightOwner=中华预防医学会和四川大学华西公共卫生学院, extLink=null, articleAbsUrl=null, sourceXml=z8zK/MIRpiAglfm+0vANZw==, magXml=gOLg4ge6BG9+FkMaFcQNsQ==, pdfUrl=null, pdf=e99RQjYR05BHd0SXUMHKkw==, pdfFileSize=1918649, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=kNLbvxPRa+9rrBJvwtimKg==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=A199oAKv5tcE8RH+ELX1TA==, mapNumber=null, authorCompany=null, fund=null, authors=
龙科言(1999—),男,硕士在读,研究方向:环境与健康
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龙科言(1999—),男,硕士在读,研究方向:环境与健康
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Arsenic inhibits the proliferation of SH-SY5Y cells (n=3), figureFileSmall=vllVEirV7uzbMbsIzfBbjg==, figureFileBig=kNLbvxPRa+9rrBJvwtimKg==, tableContent=null), ArticleFig(id=1241023944631832786, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=图1, caption=
砷抑制SH-SY5Y细胞的增殖(n=3)注:不同曲线代表不同处理时间;*P<0.05,**P<0.01,***P<0.001。
, figureFileSmall=vllVEirV7uzbMbsIzfBbjg==, figureFileBig=kNLbvxPRa+9rrBJvwtimKg==, tableContent=null), ArticleFig(id=1241023944900268261, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=EN, label=Figure 2, caption=
The level of tau protein and phosphorylated tau protein in SH-SY5Y cells after arsenic treatment (n=3), figureFileSmall=e99wdGe0yv9JOeSFtdEfvg==, figureFileBig=di3H3XK3MQaaOiSk30EDEA==, tableContent=null), ArticleFig(id=1241023945017708781, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=图2, caption=
砷处理后SH-SY5Y细胞内tau蛋白表达量和磷酸化tau蛋白水平(n=3)注:图A采用免疫印迹法检测不同浓度砷处理24 h后细胞内的tau蛋白表达量;图B为T231位点磷酸化tau蛋白;图C为S202+T205位点磷酸化tau蛋白的含量;采用ImageJ软件对条带图进行相对定量分析。
, figureFileSmall=e99wdGe0yv9JOeSFtdEfvg==, figureFileBig=di3H3XK3MQaaOiSk30EDEA==, tableContent=null), ArticleFig(id=1241023945135149300, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=EN, label=Figure 3, caption=
The level of m6A in SH-SY5Y cells after arsenic treatment (n=3), figureFileSmall=G/njUvRUgGCh/EBB6ACKtw==, figureFileBig=nKwxE+Rlc1tEw/q3L0KkTg==, tableContent=null), ArticleFig(id=1241023945235812603, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=图3, caption=
砷处理后SH-SY5Y细胞内m6A水平(n=3)注:图A斑点印迹实验,检测不同浓度砷处理24 h细胞内m6A水平;“m6A显影”表示细胞总RNA中m6A的水平,颜色越深表示m6A水平越高;“亚甲蓝扫描”和“亚甲蓝染色”颜色深浅一致表明RNA上样量一致(下同);图B采用EpiQuik法对细胞内m6A水平进行定量。
, figureFileSmall=G/njUvRUgGCh/EBB6ACKtw==, figureFileBig=nKwxE+Rlc1tEw/q3L0KkTg==, tableContent=null), ArticleFig(id=1241023945386807557, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=EN, label=Figure 4, caption=
The mRNA expression of m6A-related enzymes in SH-SY5Y cells after arsenic treatment (n=4), figureFileSmall=0hV8uADiNxgkvN5LMGUY1Q==, figureFileBig=jFkVOWYsC3y7cgu1SfRM6Q==, tableContent=null), ArticleFig(id=1241023945495859469, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=图4, caption=
砷处理后SH-SY5Y细胞内m6A相关酶mRNA表达量(n=4)注:图A、B、C、D、E分别为采用qPCR检测不同浓度砷处理24 h后细胞内的METTL3、METTL14、WTAP、ALKBH5和FTOmRNA的表达量。
, figureFileSmall=0hV8uADiNxgkvN5LMGUY1Q==, figureFileBig=jFkVOWYsC3y7cgu1SfRM6Q==, tableContent=null), ArticleFig(id=1241023945579745557, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=EN, label=Figure 5, caption=
xpression of m6A-related enzymes in SH-SY5Y cells after arsenic treatment (n=3), figureFileSmall=TvF/26N3JBx3Yln1Pezheg==, figureFileBig=B4ys2rYUuROcMsIqjzsHGw==, tableContent=null), ArticleFig(id=1241023945709768988, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=图5, caption=
砷处理后SH-SY5Y细胞内m6A相关酶表达量(n=3)注:图A、B、C、D、E分别为采用免疫印迹法检测不同浓度砷处理24 h后细胞内的METTL3、METTL14、WTAP、ALKBH5和FTO蛋白的表达量;采用ImageJ软件对条带进行相对定量分析。
, figureFileSmall=TvF/26N3JBx3Yln1Pezheg==, figureFileBig=B4ys2rYUuROcMsIqjzsHGw==, tableContent=null), ArticleFig(id=1241023945806237988, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=EN, label=Figure 6, caption=
The levels of m6A and phosphorylated tau protein in SH-SY5Y cells after DAA treatment (n=3), figureFileSmall=v+XvgaIlBhpjUQEZVzWzVQ==, figureFileBig=4rD7R5TsPFWRhUg3xfVaMQ==, tableContent=null), ArticleFig(id=1241023945911095596, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=图6, caption=
DAA处理后SH-SY5Y细胞内m6A水平和磷酸化tau蛋白水平(n=3)注:图A斑点印迹实验检测m6A水平,“As”表示添加5 μmol/L亚砷酸钠处理24 h、“DAA”表示添加m6A抑制剂;图B、C采用免疫印迹法检测砷与DAA共同处理24 h后细胞内的p-tau蛋白水平;采用Student-Newman-Keuls法进行两两比较,不同字母表示差异具有统计学意义,α=0.05。
, figureFileSmall=v+XvgaIlBhpjUQEZVzWzVQ==, figureFileBig=4rD7R5TsPFWRhUg3xfVaMQ==, tableContent=null), ArticleFig(id=1241023946011758899, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=EN, label=Table 1, caption=
WB antibodies used in the study
, figureFileSmall=null, figureFileBig=null, tableContent=
| 抗体名称 | 厂家 | 备注 |
|---|
| Anti-Tau(TAU-5) | Abcam | 总tau蛋白 |
| Phospho-Tau(Thr231) | Affinity | p-tau蛋白 |
| Anti-Tau(phosphoS202+ T205) | Abcam | p-tau蛋白 |
| METTL3 | Abcam | m6A甲基化酶 |
| METTL14 | Abclonal | m6A甲基化酶 |
| WTAP | Abclonal | m6A甲基化酶 |
| FTO | 成都正能生物 | m6A去甲基化酶 |
| ALKBH5 | 成都正能生物 | m6A去甲基化酶 |
| GAPDH | 华安生物 | 内参蛋白 |
| Goatanti-RabbitIgG Goat Polyclonal Antibody | 华安生物 | 二抗,抗兔 |
), ArticleFig(id=1241023946133393721, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=表1, caption=
研究中使用的WB抗体
, figureFileSmall=null, figureFileBig=null, tableContent=
| 抗体名称 | 厂家 | 备注 |
|---|
| Anti-Tau(TAU-5) | Abcam | 总tau蛋白 |
| Phospho-Tau(Thr231) | Affinity | p-tau蛋白 |
| Anti-Tau(phosphoS202+ T205) | Abcam | p-tau蛋白 |
| METTL3 | Abcam | m6A甲基化酶 |
| METTL14 | Abclonal | m6A甲基化酶 |
| WTAP | Abclonal | m6A甲基化酶 |
| FTO | 成都正能生物 | m6A去甲基化酶 |
| ALKBH5 | 成都正能生物 | m6A去甲基化酶 |
| GAPDH | 华安生物 | 内参蛋白 |
| Goatanti-RabbitIgG Goat Polyclonal Antibody | 华安生物 | 二抗,抗兔 |
), ArticleFig(id=1241023946200502594, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=EN, label=Table 2, caption=
The qPCR primers used in the study
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基因名称 | 引物序列(5’-3’) |
|---|
| METTL3 | F:AGATGGGGTAGAAAGCCTCCT R: TGGTCAGCATAGGTTACAAGAGT |
| METTL14 | F:GAGTGTGTTTACGAAAATGGGGT R: CCGTCTGTGCTACGCTTCA |
| WTAP | F:TTGTAATGCGACTAGCAACCAA R: GCTGGGTCTACCATTGTTGATCT |
| ALKBH5 | F:CATCTAATCTTGTCTTCCTGAG R: TCCAGTTCAAGCCTATTCG |
| FTO | F:CTTCACCAAGGAGACTGCTATTTC R: CAAGGTTCCTGTTGAGCACTCTG |
| GAPDH | F:TCTATAAATTGAGCCCGCAGC R: CCAATACGACCAAATCCGTTG |
), ArticleFig(id=1241023946271805763, tenantId=1146029695717560320, journalId=1227665162245664772, articleId=1241023933630173773, language=CN, label=表2, caption=
研究中使用的qPCR引物
, figureFileSmall=null, figureFileBig=null, tableContent=
| 基因名称 | 引物序列(5’-3’) |
|---|
| METTL3 | F:AGATGGGGTAGAAAGCCTCCT R: TGGTCAGCATAGGTTACAAGAGT |
| METTL14 | F:GAGTGTGTTTACGAAAATGGGGT R: CCGTCTGTGCTACGCTTCA |
| WTAP | F:TTGTAATGCGACTAGCAACCAA R: GCTGGGTCTACCATTGTTGATCT |
| ALKBH5 | F:CATCTAATCTTGTCTTCCTGAG R: TCCAGTTCAAGCCTATTCG |
| FTO | F:CTTCACCAAGGAGACTGCTATTTC R: CAAGGTTCCTGTTGAGCACTCTG |
| GAPDH | F:TCTATAAATTGAGCCCGCAGC R: CCAATACGACCAAATCCGTTG |
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