Parasites, Hosts and Diseases

"metalloproteinase"

Original Article

Trichomonas vaginalis Metalloproteinase Induces mTOR Cleavage of SiHa Cells: Juan-Hua Quan, In-Wook Choi, Jung-Bo Yang, Wei Zhou, Guang-Ho Cha, Yu Zhou, Jae-Sook Ryu, Young-Ha Lee; Korean J Parasitol 2014;52(6):595-603.
Published online December 23, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.6.595

Abstract
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Trichomonas vaginalis secretes a number of proteases which are suspected to be the cause of pathogenesis; however, little is understood how they manipulate host cells. The mammalian target of rapamycin (mTOR) regulates cell growth, cell proliferation, cell motility, cell survival, protein synthesis, and transcription. We detected various types of metalloproteinases including GP63 protein from T. vaginalis trophozoites, and T. vaginalis GP63 metalloproteinase was confirmed by sequencing and western blot. When SiHa cells were stimulated with live T. vaginalis, T. vaginalis excretory-secretory products (ESP) or T. vaginalis lysate, live T. vaginalis and T. vaginalis ESP induced the mTOR cleavage in both time- and parasite load-dependent manner, but T. vaginalis lysate did not. Pretreatment of T. vaginalis with a metalloproteinase inhibitor, 1,10-phenanthroline, completely disappeared the mTOR cleavage in SiHa cells. Collectively, T. vaginalis metallopeptidase induces host cell mTOR cleavage, which may be related to survival of the parasite.

Citations

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Chromatin accessibility and gene expression in the parasite Trichomonas vaginalis
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BMC Infectious Diseases.2025;[Epub] CrossRef
Metallopeptidases as Key Virulence Attributes of Clinically Relevant Protozoa: New Discoveries, Perspectives, and Frontiers of Knowledge
Graziela Vargas Rigo, Fernanda Gomes Cardoso, Giulia Bongiorni Galego, Deisiane Fernanda da Rosa, André Luis Souza dos Santos, Tiana Tasca
Current Protein & Peptide Science.2023; 24(4): 307. CrossRef
VPS32, a member of the ESCRT complex, modulates adherence to host cells in the parasite Trichomonas vaginalis by affecting biogenesis and cargo sorting of released extracellular vesicles
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Cellular and Molecular Life Sciences.2022;[Epub] CrossRef
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Regulation of exosomes released from normal ovarian epithelial cells and ovarian cancer cells
Wei Zhang, Jiaxin Yang, Dongyan Cao, Yan You, Keng Shen, Peng Peng
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Involvement of PI3K/AKT and MAPK Pathways for TNF-α Production in SiHa Cervical Mucosal Epithelial Cells Infected with <i>Trichomonas vaginalis</i>
Jung-Bo Yang, Juan-Hua Quan, Ye-Eun Kim, Yun-Ee Rhee, Byung-Hyun Kang, In-Wook Choi, Guang-Ho Cha, Jae-Min Yuk, Young-Ha Lee
The Korean Journal of Parasitology.2015; 53(4): 371. CrossRef

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Brief Communication

A Recombinant Matrix Metalloproteinase Protein from Gnathostoma spinigerum for Serodiagnosis of Neurognathostomiasis: Penchom Janwan, Pewpan M. Intapan, Hiroshi Yamasaki, Porntip Laummaunwai, Kittisak Sawanyawisuth, Chaisiri Wongkham, Chatchai Tayapiwatana, Amnat Kitkhuandee, Viraphong Lulitanond, Yukifumi Nawa, Wanchai Maleewong; Korean J Parasitol 2013;51(6):751-754.
Published online December 31, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.6.751

Abstract
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Neurognathostomiasis is a severe form of human gnathostomiasis which can lead to disease and death. Diagnosis of neurognathostomiasis is made presumptively by using clinical manifestations. Immunoblotting, which recognizes antigenic components of molecular mass 21 kDa and 24 kDa in larval extracts of Gnathostoma spinigerum (Gs 21/24), has high sensitivity and specificity for diagnosis of neurognathostomiasis. However, only very small amounts of the Gs 21/24 antigens can be prepared from parasites harvested from natural or experimental animals. To overcome this problem, we recently produced a recombinant matrix metalloproteinase (rMMP) protein from G. spinigerum. In this study, we evaluated this rMMP alongside the Gs 21/24 antigens for serodiagnosis of human neurognathostomiasis. We studied sera from 40 patients from Srinagarind Hospital, Khon Kaen University, Thailand, with clinical criteria consistent with those of neurognathostomiasis, and sera from 30 healthy control adults from Thailand. All sera were tested for specific IgG antibodies against both G. spinigerum crude larval extract and rMMP protein using immunoblot analysis. The sensitivity and specificity for both antigenic preparations were all 100%. These results show that G. spinigerum rMMP protein can be used as an alternative diagnostic antigen, in place of larval extract, for serodiagnosis of neurognathostomiasis.

Citations

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