An imbalance between stellate cells and γδT cells contributes to hepatocellular carcinoma aggressiveness and recurrence.

Abstract:

PURPOSE:The diagnostic potential of hepatic stellate cells (HSCs) and γδT cells for patients with hepatocellular carcinoma (HCC) and their synergistic contributions to the prognosis of these patients have not yet been investigated. The aim of this study was to elucidate the prognostic value of these cells in HCC. METHODS:The prognostic significance of the ratio of HSCs to γδT cells (SGR) was assessed in a total of 339 HCC patients undergoing resection. The correlation between the circulating tumor cell (CTC) level and SGR in 71 HCC patients was determined using the CellSearch system. In vitro experiments were performed to validate the synergistic effects of HSCs and γδT cells on hepatoma cells. RESULTS:Peritumoral SGR was closely associated with overall survival (OS) and recurrence-free survival (RFS) of HCC patients after resection. In the testing cohort, two nomograms incorporating the SGR were constructed for the prediction of OS and RFS. The predictive accuracy of the two nomograms was verified by the validation cohort. CTC levels were positively correlated with SGR (r = 0.479, p < 0.001). Among the patients with CTCs > 2/7.5 ml, those with a high SGR exhibited higher early recurrence rates than those with a low SGR. In vitro experiments revealed that the secretion of INF-γ, IL-17, and TNF-α from γδT cells was increased after culture with HSC-conditioned medium. In addition, γδT cells cultured with HSC-conditioned medium decreased the proliferative and invasive abilities of hepatoma cells. CONCLUSIONS:The peritumoral SGR is related to aggressive tumor behavior and has a powerful predictive value in HCC. Early recurrence in patients with a high peritumoral SGR might be associated with high CTC levels.

journal_name

Hepatol Int

journal_title

Hepatology international

authors

Zhou BY,Gong JH,Cai XY,Wang JX,Luo F,Jiang N,Gong JP,Du CY,Liao R

doi

10.1007/s12072-019-09969-w

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

631-640

issue

5

eissn

1936-0533

issn

1936-0541

pii

10.1007/s12072-019-09969-w

journal_volume

13

pub_type

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