Table 1 Overview of current cutting-edge techniques in HCC immune research

From: Immune microenvironment in hepatocellular carcinoma: from pathogenesis to immunotherapy

Technique

Methodology

Applications

References

Multiplex immunofluorescence (mIF)

Consecutive IF staining of formalin-fixed paraffin-embedded tissue sections

• Extracellular or subcellular location of HCC markers

• Biomarker changes in different etiology-derived HCC

[112, 308,309,310,311,312,313,314,315]

Flow cytometry (FC)

Fluorescent labeling of cell-surface antigens subjected to laser excitation

• Transmembrane receptor analysis

• HCC immune cell sorting

• Immunophenotyping

• Identification of novel HCC immune subsets

[119, 299, 316, 317]

Single-cell RNA sequencing (scRNA-seq)

cDNA library is prepared from isolated single cells for high-throughput sequencing

• Immune profiling

• Immunophenotyping

• Identification of novel HCC immune subsets

[318,319,320]

Multiomics (spatial proteomics, transcriptomics, and metabolomics)

Integrates protein, gene expression, and metabolite profiling with spatial resolution.

• Spatial distribution of immune cells

• Immune-evasive niche identification

• Linkage of metabolic rewiring with HCC progression.

[321,322,323,324,325,326,327]

Hepatocyte-derived organoids

In vitro generation of three-dimensional liver-like structures from isolated hepatocytes

• Drug discovery

• Immunotherapy assays

• Disease development

[328,329,330,331,332,333,334,335]