pyscenic分析结束了,其实后期最主要的就是可视化了,与其说是可视化,其实核心是对结果的提取,因为我们最后只得到了一个文件:sce_SCENIC.loom,后期我们会出两个三个文章,用来可视化结果,或者一些比较好了可应用的思路!本节详细注释代码已上传QQ群文件!
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❝1、《KS科研分享与服务》公众号有QQ交流群,但是进入门槛是20元,请考虑清楚。群里有推文的注释代码和示例数据,付费内容半价,还可以与大家交流。
2、单细胞转录组全流程代码需收费,收费代码包含公众号付费内容,也有很多新增加的内容。需进群或者需单细胞代码的小伙伴请添加作者微信了解,请备注目的,除此之外请勿添加,谢谢!
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setwd("/home/shpc_100828/Pyscenic/")
#加载分析包
library(SCopesce_SCENICR)
library(AUCell)
library(SCENIC)
#可视化相关包,多加载点没毛病
library(dplyr)
library(KernSmooth)
library(RColorBrewer)
library(plotly)
library(BiocParallel)
library(grid)
library(ComplexHeatmap)
library(data.table)
library(ggplot2)
library(pheatmap)
sce_SCENIC <- open_sce_SCENIC("sce_SCENIC.sce_SCENIC")
# exprMat <- get_dgem(sce_SCENIC)#从sce_SCENIC文件提取表达矩阵
# exprMat_log <- log2(exprMat+1) # log处理
regulons_incidMat <- get_regulons(sce_SCENIC, column.attr.name="Regulons")
regulons <- regulonsToGeneLists(regulons_incidMat)
class(regulons)
regulonAUC <- get_regulons_AUC(sce_SCENIC, column.attr.name='RegulonsAUC')
regulonAucThresholds <- get_regulon_thresholds(sce_SCENIC)
human_data <- readRDS("~/Pyscenic/human_data.rds")
cellinfo <- human_data@meta.data[,c('celltype','group',"nFeature_RNA","nCount_RNA")]#细胞meta信息
colnames(cellinfo)=c('celltype', 'group','nGene' ,'nUMI')
######计算细胞特异性TF
cellTypes <- as.data.frame(subset(cellinfo,select = 'celltype'))
selectedResolution <- "celltype"
sub_regulonAUC <- regulonAUC
rss <- calcRSS(AUC=getAUC(sub_regulonAUC),
cellAnnotation=cellTypes[colnames(sub_regulonAUC),
selectedResolution])
rss=na.omit(rss)
rssPlot <-
plotRSS(
rss,
zThreshold = 3,
cluster_columns = FALSE,
order_rows = TRUE,
thr=0.1,
varName = "cellType",
col.low = '#330066',
col.mid = '#66CC66',
col.high = '#FFCC33')
rssPlot
rss_data <- rssPlot$plot$data
devtools::install_github("XiaoLuo-boy/ggheatmap")
library(ggheatmap)
library(reshape2)
rss_data<-dcast(rss_data,
Topic~rss_data$cellType,
value.var = 'Z')
rownames(rss_data) <- rss_data[,1]
rss_data <- rss_data[,-1]
colnames(rss_data)
col_ann <- data.frame(group= c(rep("Neutrophil",1),
rep("Macrophage",1),
rep("mDC",1),
rep("T cell",1),
rep("Mast",1)))#列注释
rownames(col_ann) <- colnames(rss_data)
groupcol <- c("#D9534F", "#96CEB4", "#CBE86B", "#EDE574", "#0099CC")
names(groupcol) <- c("Neutrophil","Macrophage","mDC", "T cell","Mast")
col <- list(group=groupcol)
text_columns <- sample(colnames(rss_data),0)#不显示列名
p <- ggheatmap(rss_data,color=colorRampPalette(c('#1A5592','white',"#B83D3D"))(100),
cluster_rows = T,cluster_cols = F,scale = "row",
annotation_cols = col_ann,
annotation_color = col,
legendName="Relative value",
text_show_cols = text_columns)
p
next_regulonAUC <- regulonAUC[,match(colnames(human_data),colnames(regulonAUC))]
dim(next_regulonAUC)
regulon_AUC <- regulonAUC@NAMES
human_data@meta.data = cbind(human_data@meta.data ,t(assay(next_regulonAUC[regulon_AUC,])))
#自己选定感兴趣的或者比较重要的转录因子,这里我是随机的
TF_plot <- c("ZNF561(+)","FOXP3(+)","YY1(+)","HOXB2(+)",
"TBX21(+)","TCF12(+)","STAT2(+)","SOX21(+)",
"RBBP5(+)","NR2F6(+)","NELFE(+)","MAFG(+)")
DotPlot(human_data, features = TF_plot)+
theme_bw()+
theme(panel.grid = element_blank(),
axis.text.x=element_text(hjust =1,vjust=1, angle = 45))+
labs(x=NULL,y=NULL)+guides(size=guide_legend(order=3))
DotPlot(human_data, features = TF_plot, group.by = 'group')+
theme_bw()+
theme(panel.grid = element_blank(),
axis.text.x=element_text(hjust =1,vjust=1, angle = 45))+
theme(legend.direction = "horizontal",
legend.position = "bottom")+
labs(x=NULL,y=NULL)
FeaturePlot(human_data, features ="FOXP3(+)")
cellsPerGroup <- split(rownames(cellTypes),
cellTypes[,selectedResolution])
regulonActivity_byGroup <- sapply(cellsPerGroup,
function(cells)
rowMeans(getAUC(sub_regulonAUC)[,cells]))
regulonActivity_byGroup_Scaled <- t(scale(t(regulonActivity_byGroup),
center = T, scale=T))
regulonActivity_byGroup_Scaled=na.omit(regulonActivity_byGroup_Scaled)
hm <- draw(ComplexHeatmap::Heatmap(regulonActivity_byGroup_Scaled, name="Regulon activity",
row_names_gp=grid::gpar(fontsize=6),
show_row_names = F))
hm #可视化所有的TF
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