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Published on: March 30, 2018
NAP, a peptide derived from the activity-dependent neuroprotective protein, modulates macrophage function
Francisco J Quintana1, Roy Zaltzman, Rafael Fernandez-Montesinos
1Department of Medical Biochemistry and Molecular Biology, The University of Seville School of Medicine, Avda. Sanchez Pizjuan, 4, 41009 Sevilla, Spain.
Annals of the New York Academy of Sciences
|August 5, 2006
Summary
The neuroprotective peptide NAP downregulates key inflammatory cytokines in macrophages, suggesting a role in immune regulation alongside its known neuroprotective effects. This peptide, derived from activity-dependent neuroprotective protein (ADNP), impacts immune responses.
Area of Science:
- Neuroscience
- Immunology
- Molecular Biology
Background:
- Activity-dependent neuroprotective protein (ADNP) is a recently cloned protein.
- NAPVSIPQ (NAP) is the smallest active neuroprotective peptide derived from ADNP.
- NAP readily crosses the blood-brain barrier, indicating potential systemic effects.
Purpose of the Study:
- To investigate whether NAP influences immune-mediated inflammation.
- To determine if ADNP is expressed in macrophages.
- To examine the effect of NAP on inflammatory cytokine production in macrophages.
Main Methods:
- Assessed ADNP expression in macrophages.
- Investigated the effect of VIP on ADNP expression.
- Measured the impact of NAP on TNF-alpha, IL-16, and IL-12 cytokine levels in macrophages.
Main Results:
- Macrophages were found to express ADNP.
- ADNP expression in macrophages was responsive to VIP.
- NAP significantly downregulated key inflammatory cytokines: TNF-alpha, IL-16, and IL-12.
Conclusions:
- ADNP and its peptide NAP play a role in immune regulation.
- NAP exhibits anti-inflammatory properties by downregulating key cytokines.
- Neuroprotection and immune regulation by ADNP/NAP may be interconnected processes.