Lançando luz sobre respostas imunológicas diferenciais do músculo e do hepatopâncreas de Litopenaeus vannamei exposto ao vírus da síndrome da mancha branca (WSSV)

• Processo: 20/09903-7
• Modalidade de apoio: Auxílio à Pesquisa - Publicações científicas - Artigo
• Data de Início da vigência: 01 de agosto de 2020
• Data de Término da vigência: 31 de janeiro de 2021
• Área do conhecimento: Ciências Biológicas - Genética - Genética Animal
• Pesquisador responsável: Patrícia Domingues de Freitas
• Beneficiário: Patrícia Domingues de Freitas
• Instituição Sede: Centro de Ciências Biológicas e da Saúde (CCBS). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brasil
• Assunto(s): Expressão gênica diferencial Genes Transcriptoma Aquicultura Camarão Análise de sequência de RNA
• Palavra(s)-Chave do Pesquisador: Aquaculture | camarão | expressão diferencial | genes | RNA-seq | Transcriptoma | Aquicultura

Resumo

White Spot Syndrome Virus (WSSV) is one of the main threats to farming Litopenaeus vannamei, the most important crustacean commercialized in aquaculture worldwide. Here, we performed RNA-seq analyses in hepatopancreas and muscle from WSSV-negative (healthy) and WSSV-positive (unhealthy) L. vannamei, previously exposed to the virus, to obtain new insights about the molecular basis of resistance to WSSV. We detected 71% of our reads mapped against the recently described L. vannamei genome. This is the first report mapping RNA-seq transcripts from shrimps exposed to WSSV against the species reference genome. Differentially expressed gene (DEG) analyses were performed for four independent comparisons, and 13,338 DEGs were identified. When the redundancies and isoforms were disregarded, we observed 8351 and 6514 DEGs, respectively. Interestingly, after crossing the data, we detected a common set of DEGs for hepatopancreas and healthy shrimps, and another one for muscle and unhealthy shrimps. Our findings indicate that genes related to apoptosis, melanization and the Imd pathway are likely to be involved in response to WSSV, offering knowledge about WSSV defense in shrimps exposed to the virus, but not infected. These data present potential to be applied in further genetic studies in penaeids and other farmed shrimp species. (AU)