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Updated: Feb 15, 2026
Quantification of Antibody-dependent Enhancement of the Zika Virus in Primary Human Cells
Published on: January 18, 2019
Zika virus infection elicits auto-antibodies to C1q
Takaaki Koma1,2,3, Veljko Veljkovic4, Danielle E Anderson5
1Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA.
Abstract:
Zika virus (ZIKV) causes mostly asymptomatic infection or mild febrile illness. However, with an increasing number of patients, various clinical features such as microcephaly, Guillain-Barré syndrome and thrombocytopenia have also been reported. To determine which host factors are related to pathogenesis, the E protein of ZIKV was analyzed with the Informational Spectrum Method, which identifies common information encoded by primary structures of the virus and the respective host protein. The data showed that the ZIKV E protein and the complement component C1q cross-spectra are characterized by a single dominant peak at the frequency F = 0.338, suggesting similar biological properties. Indeed, C1q-specific antibodies were detected in sera obtained from mice and monkeys infected with ZIKV. As C1q has been known to be involved not only in immunity, but also in synaptic organization and different autoimmune diseases, a ZIKV-induced anti-C1q antibody response may contribute to the neurological complications. These findings might also be exploited for the design of safe and efficacious vaccines in the future.
Insights
Zika virus (ZIKV) infection may trigger an antibody response against complement component C1q, potentially contributing to neurological complications. This finding could inform the development of safer Zika vaccines.
Area of Science:
- Virology
- Immunology
- Neuroscience
Background:
- Zika virus (ZIKV) typically causes mild illness but is linked to severe conditions like microcephaly and Guillain-Barré syndrome.
- The mechanisms underlying ZIKV pathogenesis and associated neurological complications require further investigation.
Purpose of the Study:
- To identify host factors involved in ZIKV pathogenesis.
- To explore potential molecular interactions between ZIKV proteins and host components.
Main Methods:
- Analysis of the ZIKV E protein using the Informational Spectrum Method.
- Identification of common information between viral and host proteins.
- Detection of C1q-specific antibodies in infected animal sera.
Main Results:
- The ZIKV E protein shares significant spectral similarity with complement component C1q.
- C1q-specific antibodies were detected in mice and monkeys infected with ZIKV.
- This suggests a potential autoimmune response triggered by ZIKV infection.
Conclusions:
- A ZIKV-induced antibody response against C1q may contribute to neurological complications.
- Understanding this interaction could aid in designing safe and effective ZIKV vaccines.
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