Alterations in the expression level of a putative aspartic protease in the development of Angiostrongylus cantonensis

Acta Tropica
Kao-Pin HwangLian-Chen Wang

Abstract

Aspartic proteases are a family of proteinases with catalytic aspartate residues in the active site. These enzymes have been reported to initialize the degradation of host hemoglobin in blood-feeding helminths. After identifying an expressed sequence tag representing an aspartic protease from an Angiostrongylus cantonensis young adult dataset, this sequence was found to encode a protein with a predicted molecular mass of 46 kDa. It also showed good homologies to aspartic proteases from Caenorhabditis elegans (50.7% identity), Haemonchus contortus (43.0% identity), Necator americanus (41.5% identity), Strongyloides stercoralis (35.9% identity), and Burgia malayi (29.6% identity). This putative aspartic protease was determined to be expressed in the infective larvae, young adults, and adult worms of A. cantonensis by quantitative real-time PCR. Among male worms, the expression level was determined to increase by 223.0 + or - 24.2 fold in young adults relative to the infective larvae and then decreased to 7.1 + or - 0.2 fold in adult worms. In female worms, the expression level was observed to increase by 118.5 + or - 10.1 fold in young adults and by 277.5 + or - 29.2 fold in the adults, when compared with infective larvae. These ...Continue Reading

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Citations

Jun 1, 2011·Molecular and Biochemical Parasitology·Shih-Hsin ChangLian-Chen Wang
Sep 20, 2012·Memórias do Instituto Oswaldo Cruz·Karina Mastropasqua RebelloHenrique Leonel Lenzi
Jan 9, 2020·The Korean Journal of Parasitology·Jung-Mi KangByoung-Kuk Na
Jun 27, 2019·Memórias do Instituto Oswaldo Cruz·Kuang-Yao ChenLian-Chen Wang

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