AgentSkillsCN

bio-spatial-transcriptomics-spatial-proteomics

分析来自 CODEX、IMC 与 MIBI 等平台的空间蛋白质组学数据,包括细胞分割与蛋白质共定位。在处理多重成像数据、分析蛋白质空间模式,或将空间蛋白质组学与转录组学整合时使用。

SKILL.md
--- frontmatter
name: bio-spatial-transcriptomics-spatial-proteomics
description: Analyzes spatial proteomics data from CODEX, IMC, and MIBI platforms including cell segmentation and protein colocalization. Use when working with multiplexed imaging data, analyzing protein spatial patterns, or integrating spatial proteomics with transcriptomics.
tool_type: python
primary_tool: scimap

Spatial Proteomics Analysis

Data Loading

python
import scimap as sm
import anndata as ad

# Load CODEX/IMC data (cell x marker matrix with spatial coordinates)
adata = ad.read_h5ad('spatial_proteomics.h5ad')

# Required: spatial coordinates in adata.obsm['spatial']
# Required: protein intensities in adata.X

Preprocessing

python
# Log transform intensities
sm.pp.log1p(adata)

# Rescale markers (0-1 per marker)
sm.pp.rescale(adata)

# Combat batch correction if multiple FOVs
sm.pp.combat(adata, batch_key='fov')

Phenotyping Cells

python
# Manual gating approach
phenotype_markers = {
    'T_cell': ['CD3', 'CD45'],
    'B_cell': ['CD20', 'CD45'],
    'Macrophage': ['CD68', 'CD163'],
    'Tumor': ['panCK', 'Ki67']
}

sm.tl.phenotype_cells(adata, phenotype=phenotype_markers,
                      gate=0.5, label='phenotype')

# Clustering-based phenotyping
sm.tl.cluster(adata, method='leiden', resolution=1.0)

Spatial Analysis

python
# Build spatial neighbors graph
sm.tl.spatial_distance(adata, x_coordinate='X', y_coordinate='Y')

# Neighborhood enrichment
sm.tl.spatial_interaction(adata, phenotype='phenotype',
                          method='knn', knn=10)

# Spatial clustering (communities of cells)
sm.tl.spatial_cluster(adata, phenotype='phenotype')

Visualization

python
# Spatial scatter plot
sm.pl.spatial_scatterPlot(adata, colorBy='phenotype',
                          x='X', y='Y', s=5)

# Heatmap of spatial interactions
sm.pl.spatial_interaction(adata)

# Marker expression overlay
sm.pl.image_viewer(adata, markers=['CD3', 'CD20', 'panCK'])

Integration with Transcriptomics

python
import squidpy as sq

# If matched spatial transcriptomics available
# Transfer labels or integrate modalities
sq.gr.spatial_neighbors(adata_protein)
sq.gr.spatial_neighbors(adata_rna)

# Compare spatial patterns across modalities

Platform-Specific Notes

PlatformMarkersResolutionNotes
CODEX40-60SubcellularCyclic staining
IMC40+1 umMetal-tagged antibodies
MIBI40+260 nmMass spectrometry

Related Skills

  • spatial-transcriptomics/spatial-neighbors - Spatial graph construction
  • spatial-transcriptomics/spatial-domains - Domain identification
  • imaging-mass-cytometry/phenotyping - IMC-specific analysis