Mannose-binding lectin and ficolin-2 do not influence humoral immune response to hepatitis B vaccine

Osthoff, Michael, Irungu, Elizabeth, Ngure, Kenneth, Mugo, Nelly, Thomas, Katherine K., Baeten, Jared M., and Eisen, Damon P. (2014) Mannose-binding lectin and ficolin-2 do not influence humoral immune response to hepatitis B vaccine. Vaccine, 32 (37). 4772 - 4777.

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Abstract

Background: Host genetics appear to be an important factor in the failure to generate a protective immune response after hepatitis B (HBV) vaccination. Mannose-binding lectin (MBL) and ficolin-2 (FCN2), two pattern recognition receptors of the lectin pathway of complement, influence the clinical outcome of HBV, and MBL deficiency has been shown to augment the humoral response to HBV vaccination in several experimental models. Here, we investigated the association of MBL and FCN2 with the humoral response to HBV vaccination in a candidate gene and functional study.

Patients and methods: A post hoc analysis of a prospective, interventional HBV vaccination study among human immunodeficiency virus type 1 (HIV-1) uninfected individuals in Kenya was conducted. Serum levels and polymorphisms of {MBL} and {FCN2} were analysed in relation to the immune response to {HBV} vaccination.

Results: Protective hepatitis B surface antibody levels (≥10 mIU/mL) were evident in 251/293 (85.7%) individuals. Median MBL and FCN2 levels were similar in responders vs. non-responders with a weak trend towards lower median MBL levels in non-responders (1.0 vs. 1.6 µg/mL, p = 0.1). Similarly, there was no difference in four MBL and six FCN2 polymorphisms analysed in the two groups with the exception of an increased frequency of a homozygous MBL codon 57 mutation in non-responders (4 (9.5%) vs. 8 (3.2%), p = 0.05) corresponding to lower MBL levels. Results were similar after adjusting for age and sex.

Conclusions: Our study does not support a prominent role of the lectin pathway of complement in general and MBL and FCN2 in particular in the humoral immune response to HBV vaccination in African adults.

Item ID: 51419
Item Type: Article (Research - C1)
ISSN: 1873-2518
Keywords: mannose-binding lectin, ficolin-2, hepatitis B vaccine, complement system, innate immunity
Funders: University of Melbourne, National Institutes of Health (NIH), USA, Bill and Melinda Gates Foundation (BMGF)
Projects and Grants: NIH D43 TW000007, NIH R25 TW009346, BMGF OOP47674
Date Deposited: 06 Nov 2017 02:34
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1107 Immunology > 110705 Humoural Immunology and Immunochemistry @ 30%
11 MEDICAL AND HEALTH SCIENCES > 1103 Clinical Sciences > 110309 Infectious Diseases @ 40%
11 MEDICAL AND HEALTH SCIENCES > 1103 Clinical Sciences > 110303 Clinical Microbiology @ 30%
SEO Codes: 92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920109 Infectious Diseases @ 50%
92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920108 Immune System and Allergy @ 50%
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