首页|AITC调控肠嗜铬细胞中血清素的代谢及其生物学功能

AITC调控肠嗜铬细胞中血清素的代谢及其生物学功能

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为探讨异硫氰酸烯丙酯(Allylisothiocyanate,AITC)调控肠嗜铬细胞(Enterochromaffin cells,EC)中血清素(5-hydroxytryptamine,5-HT)的合成及其对EC生物学功能的影响,使用食用级AITC对RIN-14B细胞(大鼠胰腺内分泌细胞系)进行干预处理,采用FLUO-8 AM检测RIN-14B细胞内钙离子浓度,qRT-PCR分析 5-HT合成相关基因表达,UPLC测定 5-HT含量,以及RNA-seq检测AITC处理后的RIN-14B细胞转录组,并对其结果进行生物信息学分析.结果表明,AITC通过激活离子通道TRPA1 使胞内钙离子浓度升高,上调Tph1(色氨酸羟化酶)和Ddc(5-羟色氨酸脱羧酶)的表达,从而促进 5-HT合成及分泌.此外,GO和KEGG功能富集分析AITC处理后的RIN-14B细胞差异表达基因发现,AITC主要调控谷胱甘肽代谢和抗氧化、炎症调节等相关通路,提示AITC可能通过刺激EC促进谷胱甘肽代谢来调节肠道稳态,同时参与肠道的炎症调节.以上结果为研究AITC影响EC及肠道更深入的生物学功能提供实验数据与研究思路.
AITC regulates serotonin secretion and other biological functions in enterochromaffin cells
In order to investigate the effects of allyl isothiocyanate(AITC)on the synthesis of 5-HT in EC and the biological functions of EC,edible grade AITC were used to intervene with RIN-14B cells(rat pancreatic endocrine cell line),a cell model of EC.The cal-cium ion concentration in the cells was detected by FLUO-8 AM,the expression level of genes related to 5-HT synthesis was analyzed by qRT-PCR,the levels of 5-HT were determined by UPLC,and the transcriptome of AITC-treated RIN-14B cells was detected and analyzed by RNA-seq and bioinformatics.The results indicated that AITC caused an increase in intracellular calcium ion concentration through activation of TRPA1,while upregulated the expression of Tph1(tryptophan hydroxylase)and Ddc(5-hydroxytryptophan decar-boxylase).In addition,GO and KEGG functional enrichment analysis on AITC treated RIN-14B cells showed that AITC mainly regula-ted glutathione metabolism and relate pathways such as antioxidant and inflammatory regulation,suggesting that AITC may regulate in-testinal homeostasis by stimulating EC to promote glutathione metabolism,and also participate in inflammatory regulation of the intes-tine.The above results provided experimental data and research ideas for further study of the effects of AITC on EC and deeper biologi-cal functions of the intestine.

allyl isothiocyanateenterochromaffin cells5-HTRNA-seqbiological function

王思瑜、杨雅丽、司琪琦、郭泰林、黄新河

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西南交通大学 生命科学与工程学院, 成都 610031

西南交通大学 医学院, 成都 610031

异硫氰酸烯丙酯 肠嗜铬细胞 血清素 RNA-seq 生物学功能

四川省自然科学基金面上项目

23NSFSC0920

2024

生物学杂志
合肥市科学技术协会

生物学杂志

CSTPCD北大核心
影响因子:0.554
ISSN:2095-1736
年,卷(期):2024.41(2)
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