Evaluation of Opisthorchis viverrini calreticulin for potential host modulation.
Acta Trop
; 187: 175-181, 2018 Nov.
Article
em En
| MEDLINE
| ID: mdl-30098943
ABSTRACT
The multifunctional calreticulin (CALR) was identified as a major calcium-binding protein of the endoplasmic reticulum before being recognized as a chaperone in the same place. Only later were activities of calreticulin outside the endoplasmic reticulum described that for example affect cell proliferation and the innate immune system. In the present work we have investigated those extracellular activities of CALR from the cancerogenic human liver fluke Opisthorchis viverrini (OvCALR), as they might be important in host/parasite interaction. We first demonstrate that OvCALR is released from the parasite and stimulates a specific humoral immune response. Recombinant OvCALR is then shown to suppress proliferation of primary endothelial cells, their motility and sprouting activities. The potential of OvCALR to interfere with the complement system is established, firstly by demonstrating its direct binding to C1q and, secondly by suppression of hemolysis of sensitized red blood cells. These findings suggest that OvCALR is an important parasite antigen that could modulate diverse host functions and support parasite survival.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Opisthorchis
/
Complemento C1q
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Calreticulina
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Células Endoteliais da Veia Umbilical Humana
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Interações Hospedeiro-Parasita
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Antígenos de Helmintos
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Acta Trop
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Tailândia