Evaluation of Opisthorchis viverrini calreticulin for potential host modulation

Chaibangyang, W, Geadkaew-Krenc, A, Smooker, P, Tesana, S and Grams, R 2018, 'Evaluation of Opisthorchis viverrini calreticulin for potential host modulation', Acta Tropica, vol. 187, pp. 175-181.

Document type: Journal Article
Collection: Journal Articles

Title Evaluation of Opisthorchis viverrini calreticulin for potential host modulation
Author(s) Chaibangyang, W
Geadkaew-Krenc, A
Smooker, P
Tesana, S
Grams, R
Year 2018
Journal name Acta Tropica
Volume number 187
Start page 175
End page 181
Total pages 7
Publisher Elsevier B.V.
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.
Subject Microbiology not elsewhere classified
Keyword(s) Calreticulin
Cell motility
Cell proliferation
Complement C1q
Endothelial sprouting
Opisthorchis viverrini
DOI - identifier 10.1016/j.actatropica.2018.08.009
Copyright notice © 2018 Elsevier B.V.
ISSN 0001-706X
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