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Immunology of Viral Hepatitis and Infections in Liver Cirrhosis
Hepatitis viruses A-E pose a major health challenge worldwide. Acute infections with hepatitis B (HBV), C (HCV), D (HDV) or E (HEV) can progress to chronic hepatitis and lead to liver cirrhosis and hepatocellular carcinoma. Chronic viral hepatitis affects more than 350 million people worldwide. While direct-acting antiviral drugs provide a cure for chronic hepatitis C, the long-term effects on the immune system after the infection is cured are not fully understood. While direct-acting antiviral nucleos(t)ide analogues can treat chronic hepatitis B, complete cure is rare. Innovative approaches, particularly modulation of the immune response to HBV, hold promise for a cure. Chronic hepatitis D is always a co-infection with HBV and thus concepts to cure HBV will also target HDV. In chronic hepatitis E, which is unique in immunocompromised patients such as organ transplant patients, enhancing the immune response against HEV may be a novel strategy. In people with cirrhosis of the liver, regardless of the cause, the immune system is compromised and susceptibility to infection is increased. In particular, bacterial infections of the peritoneal cavity due to ascites contribute significantly to disease progression. Our research group focuses on understanding immune responses to hepatitis viruses and developing biomarkers to better stratify patients for new therapeutic strategies to modulate the host immune system in the effort to combat chronic viral hepatitis. In addition, we are exploring the mechanisms underlying immunodeficiency in liver cirrhosis and investigating immunomodulation strategies to improve survival in these vulnerable patients.
Computational Biology for Infection Research
The group studies microbial communities, including bacteria, viruses and eukaryotic community members, in the context of human health and disease. Direct metagenome, -transcriptome or -proteome sequencing of microbial community samples enables the study of microorganisms that cannot be obtained in pure culture, corresponding to most of the microbial world.