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J Gastroenterol Hepatol. 2000 Apr;15(4):431-6.

Decreased function of peripheral blood dendritic cells in patients with hepatocellular carcinoma with hepatitis B and C virus infection.

Author information

1
First Department of Internal Medicine and Research Center for Infectious Disease, Aichi Medical University, Aichi-gun, Aichi-ken, Japan.

Abstract

BACKGROUND:

Tumour immunity does not seem to be induced effectively in tumour-bearing hosts, including in patients with hepatocellular carcinoma (HCC). One possible reason is that function of dendritic cells (DC) is decreased in such hosts.

METHODS:

We evaluated T cell stimulatory activity and interleukin (IL)-12 production of DC and interferon (IFN)-gamma and IL-10 production of T cells of peripheral blood from 12 control individuals and 21 patients with chronic hepatitis C virus (HCV) infection (six with chronic hepatitis (CH), eight with liver cirrhosis (LC) and 13 with HCC). Five hepatitis B virus (HBV)-infected patients with HCC were included as a disease control group. The DC were prepared by the culture of T cell-depleted populations of peripheral blood mononuclear cells in the presence of granulocyte-macrophage colony stimulating factor and IL-4 for a total of 11-12 days. The cytokine levels were assayed by ELISA. To test the stimulatory function of DC in T cell proliferation, mytomycin C-treated DC were cultured with allogeneic T cells from a control.

RESULTS:

When the T cell-stimulatory activity of DC was expressed as stimulation index value of [3H]-thymidine incorporation of T cells, the values were lower in HCV-infected HCC (2.6 +/- 1.8, P < 0.01) than in controls (5.5 +/- 2.0) and CH (5.0 +/- 1.3). Staphylococcus aureus Cowan 1-induced IL-12 production of DC was decreased in HCV-infected HCC (P < 0.001, P < 0.01 and P < 0.05, respectively) compared with controls, CH and LC, while similar amounts of IL-10 were produced in patients and controls. Interleukin-10 and IFN-gamma production of T cells in response to anti-CD3 antibody or IL-12 were equivalent between patient groups and controls, respectively. Similarly decreased DC function and normal T cell response were observed in HBV-infected HCC patients.

CONCLUSIONS:

These findings suggest that the depressed function of DC is associated with pathogenesis of HCC with HBV or HCV infection.

PMID:
10824889
[Indexed for MEDLINE]

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