Immune responses in hepatitis C: is virus or host the problem?

Abstract:

PURPOSE OF REVIEW:Hepatitis C virus is an RNA virus that usually establishes persistent infection in its host. As an important cause of cirrhosis and hepatocellular carcinoma worldwide, hepatitis C is a growing public health concern. Despite recent advances in therapy, most people infected with the virus can expect lifelong infection. In the minority of those exposed and who spontaneously clear virus, a robust hepatitis C virus-specific T cell response of T helper 1 type correlates with resolution. The longevity of this response in the recovered state and the potential for hepatitis C virus-specific T cells to protect against future infection are critical parameters for vaccine design. RECENT FINDINGS:The literature of the past year dissected components of protective immunity to hepatitis C and emphasized the importance of the CD4 helper response in both the expansion and maintenance of hepatitis C virus-specific CD8(+) T cells. Other important studies examined how the virus interacts with immune cells to subvert both innate and adaptive immune responses in acute and chronic infection. SUMMARY:Defining the essential components of protective immunity against a highly mutable virus like hepatitis C underpins successful vaccine design. By understanding viral and host factors which influence hepatitis C virus-specific T cell maintenance and function, we are better equipped to devise immunomodulatory therapies and vaccines which induce robust and lasting immunity.

journal_name

Curr Opin Infect Dis

authors

Darling JM,Wright TL

doi

10.1097/00001432-200406000-00004

subject

Has Abstract

pub_date

2004-06-01 00:00:00

pages

193-8

issue

3

eissn

0951-7375

issn

1473-6527

pii

00001432-200406000-00004

journal_volume

17

pub_type

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