Gene · 2023
Identification and characterization of microRNAs in Biomphalaria tenagophila and comparative analysis of their expression in Schistosoma mansoni-resistant and -susceptible snail populations.
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Alves Tamires Caixeta, Queiroz Fábio Ribeiro, de Melo Neto Angelo Borges, da Rocha Fernandes Gabriel, Pais Fabiano Sviatopolk-Mirsky, de Jesus Jeremias Wander, Babá Elio Hideo, de Moraes Mourão Marina, Morais Enyara Rezende, Cabral Fernanda Janku, do Amaral Laurence Rodrigues, Caldeira Roberta Lima, Zech Coelho Paulo Marcos, de Souza Gomes Matheus
Аннотация
BACKGROUND: Schistosomiasis is a neglected tropical disease caused by Schistosoma and affects over 240 million people worldwide. One of the most prominent causative agents is Schistosoma mansoni, which develops inside the intermediate host. Biomphalaria tenagophila is the second most important vector of schistosomiasis in Brazil and the Taim population is completely resistant to infection by S. mansoni.
OBJECTIVE: This study aims to identify and characterize B. tenagophila microRNAs (miRNAs) and evaluate their differential expression in S. mansoni-susceptible and -resistant populations of B. tenagophila.
METHODS: Two populations of B. tenagophila snails, susceptible and resistant to S. mansoni infection, were used to investigate the small RNA response of these snails after being infected with the parasite. Small RNA sequencing and quantitative real-time PCR were employed to identify and validate differentially expressed miRNAs. Bioinformatics analysis were performed to identify miRNA precursors and mature and evaluate their differential expression.
FINDINGS: The study predicted 173 mature miRNAs and 123 precursors. Among them were six Lophotrochozoa-specific miRNAs, three mollusk-specific miRNAs, and six pre-miRNAs in a cluster. The small RNA sequencing and RT-PCR of B. tenagophila samples allowed assessing the expression patterns of miRNAs.
MAIN CONCLUSIONS: The results obtained may support future studies in Biomphalaria spp., generating a global impact on disease control.
OBJECTIVE: This study aims to identify and characterize B. tenagophila microRNAs (miRNAs) and evaluate their differential expression in S. mansoni-susceptible and -resistant populations of B. tenagophila.
METHODS: Two populations of B. tenagophila snails, susceptible and resistant to S. mansoni infection, were used to investigate the small RNA response of these snails after being infected with the parasite. Small RNA sequencing and quantitative real-time PCR were employed to identify and validate differentially expressed miRNAs. Bioinformatics analysis were performed to identify miRNA precursors and mature and evaluate their differential expression.
FINDINGS: The study predicted 173 mature miRNAs and 123 precursors. Among them were six Lophotrochozoa-specific miRNAs, three mollusk-specific miRNAs, and six pre-miRNAs in a cluster. The small RNA sequencing and RT-PCR of B. tenagophila samples allowed assessing the expression patterns of miRNAs.
MAIN CONCLUSIONS: The results obtained may support future studies in Biomphalaria spp., generating a global impact on disease control.