粪菌移植对慢加急性肝衰竭小鼠模型肠道菌群的影响

高安; 徐玉静; 陆圣威; 孙蔚; 甘建和

doi:10.3969/j.issn.1001-5256.2021.06.031

粪菌移植对慢加急性肝衰竭小鼠模型肠道菌群的影响

DOI: 10.3969/j.issn.1001-5256.2021.06.031

苏州大学附属第一医院感染科，江苏苏州 215000

基金项目:

"十三五"国家科技重大专项项目 (2017ZX10203201002－002)

利益冲突声明：本研究不存在研究者、伦理委员会成员、受试者监护人以及与公开研究成果有关的利益冲突。

作者贡献声明：高安负责课题设计，实施研究，资料分析，撰写论文；徐玉静、陆圣威参与收集及分析数据；孙蔚负责拟定写作思路，修改论文；甘建和负责指导撰写文章并最后定稿。

详细信息

作者简介:
高安(1993—)，男，主要从事慢性肝炎、肝衰竭、感染性疾病临床及基础研究

通信作者:
甘建和，ganjianhe@aliyun.com

中图分类号: R575.3
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出版历程
- 收稿日期: 2020-07-30
- 录用日期: 2020-08-31
- 出版日期: 2021-06-20

Effect of fecal microbiota transplantation on intestinal flora in mice with acute-on-chronic liver failure

Department of Infectious Diseases, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, China

摘要

摘要: 目的研究粪菌移植(FMT)对慢加急性肝衰竭(ACLF)小鼠的保护作用及其对肠道菌群的影响。方法将40只小鼠按随机数字表法分为正常组(CON组)、模型组(MOD组)、粪菌移植组(FMT组，选取CON组小鼠粪便作为粪菌供体)、模型小鼠粪菌移植组(ANFMT组，选取模型组小鼠粪便作为粪菌供体)，每组均10只。观察每组小鼠体质量、死亡情况、肝组织病理、AST、ALT和肠道菌群变化。符合正态分布的计量资料多组间比较采用单因素方差分析，进一步两两比较采用SNK-q检验。结果与CON组小鼠相比，MOD组小鼠体质量明显下降，AST、ALT明显升高(P值均＜0.05)；肝细胞大片状坏死；疣微菌门(Verrucomicrobia)、阿克曼菌属(Akkermansia)、Erysipelatoclostridium显著上升，Dubosiella、Duncaniella显著下降(P值均＜0.05)。与CON组小鼠相比，ANFMT组小鼠AST显著升高(P＜0.05)；肝细胞肿胀，轻微气球样变；未分类(unclassified)、Faecalibaculum显著上升，Patescibacteria、脱铁杆菌门(Deferribacteres)、Muribaculum、Candidatus_Saccharimonas、理研菌属(Rikenella)、Odoribacter、Mucispirillum、Lachnospiraceae_unclassified显著下降(P值均＜0.05)。与MOD组小鼠相比，FMT组小鼠AST、ALT显著下降(P值均＜0.05);肝细胞明显气球样变，坏死较轻; Paramuribaculum、嗜胆菌属(Bilophila)显著上升，厚壁菌门、Rikenella、Absiella显著下降(P值均＜0.05)。结论 ACLF小鼠肠道菌群紊乱；菌群失调导致肝损伤；FMT能减轻ACLF小鼠肝脏炎症，具有保护作用。
- 慢加急性肝衰竭 /
- 粪菌移植 /
- 胃肠道微生物组 /
- 小鼠，近交C57BL
Abstract: Objective To investigate the protective effect of fecal microbiota transplantation (FMT) on mice with acute-on-chronic liver failure (ACLF) and its effect on intestinal flora. Methods A total of 40 mice were randomly divided into control group (CON group), model group (MOD group), FMT group (feces of the mice in the CON group were used as fecal microbiota donor), and FMT model group (ANFMT group, with feces of the mice in the MOD group as fecal microbiota donor), with 10 mice in each group. All mice were observed in terms of body weight, death, liver histopathology, and changes in aspartate aminotransferase (AST), alanine aminotransferase (ALT), and intestinal flora. A one-way analysis of variance was used for comparison of normally distributed continuous data between multiple groups, and the SNK-q test was used for further comparison between two groups. Results Compared with the CON group, the MOD group had a significant reduction in body weight and significant increases in AST and ALT (all P < 0.05), as well as large patchy necrosis of hepatocytes, significant increases in Verrucomicrobia, Akkermansia, and Erysipelatoclostridium, and significant reductions in Dubosiella and Duncaniella (all P < 0.05). Compared with the CON group, the ANFMT group had a significant increase in AST (P < 0.05), hepatocyte swelling and mild ballooning degeneration, significant increases in Unclassified and Faecalibaculum, and significant reductions in Patescibacteria, Deferribacteres, Muribaculum, Candidatus_Saccharimonas, Rikenella, Odoribacter, Mucispirillum, and Lachnospiraceae_unclassified (all P < 0.05). Compared with the MOD group, the FMT group had significant reductions in AST and ALT (both P < 0.05), mild hepatocellular necrosis and marked ballooning degeneration, significant increases in Paramuribaculum and Bilophila, and significant reductions in Firmicutes, Rikenella, and Absiella (all P < 0.05). Conclusion Intestinal flora disturbance is observed in ACLF mice, and dysbacteriosis may lead to liver injury. FMT can alleviate liver inflammation in ACLF mice and thus exert a protective effect.
- Acute Chronic Liver Failure /
- Fecal Microbiota Transplantation /
- Gastrointestinal Microbiome /
- Mice, Inbred C57BL

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图 1 4组小鼠体质量变化

下载: 全尺寸图片幻灯片

图 2 各组小鼠肝组织病理(HE染色，×200)

注：a，CON组；b，ANFMT组；c，MOD组；d，FMT组。

下载: 全尺寸图片幻灯片

图 3 各组OTUs的差异

注：a，4组比较；b，CON组vs ANFMT组；c，CON组vs MOD组；d，CON组vs FMT组。

下载: 全尺寸图片幻灯片

图 4 各组粪便菌群稀释曲线图

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图 5 4组肠道菌群PCA分析

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图 6 4组肠道菌群NMDS分析

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图 7 4组肠道菌群PCoA分析

注：a，基于unweighted unifrac分析；b，基于weighted unifrac分析。

下载: 全尺寸图片幻灯片

图 8 四组菌群门水平分布情况

注：a，门水平柱状图; b，样品聚类分析图。

下载: 全尺寸图片幻灯片

图 9 四组门水平相对丰度热图

注：与CON组相比，*P＜0.05；与MOD组相比，#P＜0.05；蓝色表示丰度低，红色表示丰度高。

下载: 全尺寸图片幻灯片

图 10 四组菌群属水平分布情况

注：a，属水平柱状图；b，样品聚类分析图。

下载: 全尺寸图片幻灯片

图 11 4组属水平相对丰度热图

注：与CON组相比，*P＜0.05；与MOD组相比，#P＜0.05。

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图 12 LEfSe差异分析

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表 1 4组小鼠体质量与肝功能水平比较

指标	CON组(n=10)	ANFMT组(n=10)	MOD组(n=6)	FMT组(n=8)	F值	P值
体质量(g)	27.20±2.63	25.92±1.18	24.26±1.19¹⁾	26.16±0.62	2.584	0.075
AST(U/L)	133.34±29.64	201.52±40.65¹⁾	427.30±248.76¹⁾	265.96±30.27¹⁾²⁾	4.098	0.019
ALT(U/L)	52.81±15.04	67.75±18.37	241.44±180.18¹⁾	89.10±46.89²⁾	4.506	0.026
注：1)与CON组相比，P＜0.05，2)与MOD组相比，P＜0.05。

下载: 导出CSV

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