Cirrhosis-associated immune dysfunction (CAID) is an
immunological perturbation that develops on top of liver cirrhosis
(LC). Immune perturbation directs LC progression to hepatocellular
carcinoma (HCC). Innate immune cells, in particular, monocytes,
play key roles in inflammation and tumorigenesis. MicroRNAs (miRs)
have been regarded as master regulators of the immune networks. We
aim to investigate the altered monocytes subsets distribution in LC
and subsequent HCC in association with the expression level of
plasma homo sapiens (hsa)-miR-21-5p and hsa-miR-155-5p. A step
toward non-protein coding (nc) RNA precision medicine based on the
immune perturbation, manifested as altered monocytes distribution,
on top of LC and HCC. Subjects and Methods: Seventy-nine patients
diagnosed with chronic hepatitis C virus (CHCV) infection with LC
were enrolled in the current study. Patients were sub-classified
into LC group without HCC (n=40), LC with HCC (n=39), and 15
apparently healthy controls. Monocyte subsets frequencies were
assessed by flow-cytometry. Real-time quantitative PCR was used to
measure plasma hsa-miR-21-5p and hsa-miR-155-5p expression.
Results: hsa-miR-21-5p correlated with intermediate monocytes
(r=0.30, p=0.007), while hsa-miR-155-5p negatively
correlated with nonclassical monocytes (r= -0.316,
p=0.005). ROC curve analysis revealed that combining
intermediate monocytes frequency and hsa-miR-21 yielded
sensitivity= 79.5%, specificity= 75%, and AUC= 0.84. In comparison,
AFP yielded a lower sensitivity = 69% and 100% specificity with
AUC= 0.85. Logistic regression analysis proved that up-regulation
of intermediate monocytes frequency and hsa-miR-21-5p were
independent risk factors for LC progression to HCC, after
adjustment for co-founders. Conclusion: Monocyte subsets
differentiation in HCC was linked to hsa-miR-21-5p and
hsa-miR-155-5p. Combined up-regulation of intermediate monocytes
frequency and hsa-miR-21-5p expression could be considered a
sensitive indicator of LC development to HCC. Circulating
intermediate monocytes and hsa-miR-21-5p were independent risk
factors for HCC evolution, clinically and in
silicoproofed.