Page 62 - 南京医科大学自然版
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理盐水(normal saline,NS)处理56 d和SiO2处理56 d 结合密切相关(图 1D),其中与之关联的基因包括
时的差异基因,并筛选出在 SiO2组中表达上调的前 Ctss、Lgals3 和 Spp1。点图显示,Lgals3 在 SiO2 处理
10 个基因,分别是 Ccl6、Lyz2、Ftl1、Spp1、Lgals3、 56 d组中的表达水平更高(图1E)。
Cxcl2、Fth1、Psap、S100a9 和 Ctss(图 1C)。随后在 2.2 构建SiO2诱导的小鼠肺纤维化模型
Metascape 网站对这些基因进行了基因本体(gene 天狼星红染色结果显示,SiO2暴露组小鼠肺组
ontology,GO)富集分析,通路分析结果显示与 ECM 织中胶原纤维在支气管及肺泡间隔周围呈现显著
A
Ciliated cell
Macrophage⁃1
AT2 cell⁃2 Macrophage⁃2
Clara cell
AT2 cell⁃1 Monocyte
T cell
Fibroblast B cell
10
Ig⁃producing B cell
Dendritic cell
Macrophage⁃2 Macrophage⁃1 AT1 cell Neutrophil
NK cell
Myofibroblast vascular Endothelial cell⁃1
Dendritic cell
Monocyte smooth muscle cell Endothelial cell⁃2
Fibroblast
UMAP_2 5 Cycling basal cell Myofibroblast vascular smooth musclc cell
Ig⁃producing B cell
Cycling basal cell
Neutrophil
Ciliated cell
Clara cell
AT1 cell
Ighat AT2 cell AT2 cell⁃1
Endothelial cell⁃2 AT2 cell⁃2
NK cell
Ighat AT2 cell
-10
T cell B cell
-10 -5 0 5 10
UMAP_1
B 1 000 C
Psap
Ctss S100a9 Fth1 Cxcl2 Lgals3 Spp1 Ftl1 Lyz2 Ccl6
750
Cell count 500
250 NS
Expression
0 2 1
NS_7 d NS_56 d SiO2_7 d SiO2_56 d SiO2 0 -1
-2
D E
GO:0030593:Neutrophil chemotaxis
NS_7 d
GO:0050840:Extracellular matrix binding
GO:0000323:Lytic vacuole Percent expressed
GO:0001664:G protein⁃coupled receptor binding Split identity NS_56 d 25%
0 1 2 3 4 5 6 7 8 SiO2_7 d 50%
75%
-lg(P)
SiO2_56 d
Lgals3 Spp1 Ctss
Features
A:UMAP plot illustrating cell clustering. B:Bar plot showing changes in fibroblast cell counts across different groups. C:Heatmap showing the top
10 upregulated genes in fibroblasts at 56 days. D:GO enrichment analysis of biological pathways. E:Dot plot displaying the expression of Lgals3,Spp1,
and Ctss in fibroblasts.
图1 成纤维细胞来源的LGALS3参与ECM结合
Figure 1 Fibroblast⁃derived LGALS3 participated in ECM binding

