Immunogenic Peptides from Pap31 and SCS-α of Bartonella bacilliformis: One Step Closer to a Rapid Diagnostic Tool for Carrion’s Disease

Autor: Cláudia Gomes, Maria J. Pons, Juana del Valle-Mendoza, Mayumi Matsuoka, Joaquim Ruiz
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Pathogens, Vol 10, Iss 8, p 917 (2021)
Druh dokumentu: article
ISSN: 2076-0817
DOI: 10.3390/pathogens10080917
Popis: Bartonella bacilliformis is the causal agent of Carrion’s disease, an overlooked illness endemic in the Andean Mountains with Peru being the most affected country. The diagnostic of this illness is a challenge due to the limited resources and the common symptomatology with other infectious diseases. The goal of this study was to identify immunogenic peptides from Pap31 and succinyl-CoA synthetase α (SCS-α) of B. bacilliformis that might be suitable for developing a serologic tool. The immunodominant character of Pap31 and SCS-α was determined by Western blotting and in-silico analysis. Subsequently, 35 peptides were selected for epitope mapping and their immunoreactivity was tested by enzyme-linked immunosorbent assay (ELISA). A total of 30 sera were tested including pre-exposed people with high IgM levels for Pap31/SCS-α (23 sera), patients (2 sera) as well as 5 sera with no reactivity to Pap31/SCS-α. The results indicate that Pap31-8 (187QAIGSAILKGTKDTGT202) and SCS-α-12 (59IFASVAEGKEKTGANA74) are the most immunogenic peptides, with Pap31-8 showing potential to discriminate between B. bacilliformis and the remaining Bartonella spp., and SCS-α-12 differentiating Bartonella spp. from other microorganisms.
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