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Table 4 Gut–liver axis and immunoregulation of PLC

From: Metabolic reprogramming in the tumor microenvironment of liver cancer

Microbiome

Metabolites

Target TME components

Function

References

Gram + bacteria (Clostridium spp)

Primary BA

LSEC

IS

[211–213]

 

Secondary BA

NKT cells

  

Gram + bacteria (Phylum firmicutes)

DCA

HSC

IS

[198, 224]

 

LTA

CD8 + T cells

  

Lactobacillus intestinalis

D-lactate

Macrophage

IS

[111, 228]

Clostridium spp.

Fermentation metabolites (BA)

Neutrophil

IS

[231]

Bacteroides spp.

SCFA (Butyrate, acetate, formate)

CD8 + T cells

IS

[208]

Ruminococcus spp.

APC

  

Veillonella spp.

Treg cells

  

Clostridium spp.

   

Lactobacillus reuteri

Acetate

ILC3

IA

[227]

  1. BA bile acid; DCA deoxycholic acid; LTA lipoteichoic acid; SCFA short-chain fatty acid; LSEC liver sinusoidal endothelial cells; HSC hepatic stellate cells; IS immunosuppression; and IA immune activation