LUCIANI RENATA SILVEIRA DE CARVALHO
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/42 - Laboratório de Hormônios e Genética Molecular, Hospital das Clínicas, Faculdade de Medicina
LIM/42 - Laboratório de Hormônios e Genética Molecular, Hospital das Clínicas, Faculdade de Medicina
3 resultados
Resultados de Busca
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conferenceObject Gene Identification in Patients with Hypopituitarism: Next Generation Exome Sequencing Experience(2014) FANG, Qing; ARNHOLD, Ivo J. P.; BENEDETTI, Anna Flavia F.; MENDONAA, Berenice Bilharinho; BRUE, Thierry; CARVALHO, Luciani R. S.; CASTINETTI, Frederic; CORREA, Fernanda de Azevedo; LI, Jun Z.; MA, Qianyi; REYNAUD, Rachel; CAMPER, Sally Ann- Rederivation of a mutant line (prop 1) of zebrafish Danio rerio infected with Pseudoloma neurophilia using in vitro fertilization with eggs from pathogen-free wild-type (AB) females and sperm from prop 1 males(2022) FERNANDES, Bianca H. Ventura; SILVA, Caroline Caetano da; BISSEGATO, Debora; KENT, Michael L.; CARVALHO, Luciani R.Along with the growing number of laboratories that work with zebrafish (Danio rerio), it is necessary to have animals with good sanitary quality. Specific pathogens can interfere with the experimental results and in the life quality of the animals. Pseudoloma neurophilia is a parasite with high potential for interference in behavioural, morphology, toxicological and genetic research, and is very common in zebrafish facilities. With that, we implemented a protocol for the pathogen elimination in a genetically modified lineage (prop 1) using eggs from specific pathogen-free (SPF) wild-type fish (AB line) for in vitro fertilization, along with water recirculation equipment disinfection, appropriate PCR screening and back crossing protocols. This resulted in SPF prop 1 heterozygotes, which allowed us to move forward with subsequent crossings to develop homozygote prop 1 mutants for our research. Hence, this demonstrates a useful strategy for an individual research laboratory to rederive a specific mutant free line that is not available from other SPF laboratories.
- High-throughput splicing assays identify missense and silent splice-disruptive POU1F1 variants underlying pituitary hormone deficiency(2021) GERGICS, Peter; SMITH, Cathy; BANDO, Hironori; JORGE, Alexander A. L.; ROCKSTROH-LIPPOLD, Denise; VISHNOPOLSKA, Sebastian A.; CASTINETTI, Frederic; MAKSUTOVA, Mariam; CARVALHO, Luciani Renata Silveira; HOPPMANN, Julia; MAYER, Julian Martinez; ALBAREL, Frederique; BRASLAVSKY, Debora; KESELMAN, Ana; BERGADA, Ignacio; MARTI, Marcelo A.; SAVEANU, Alexandru; BARLIER, Anne; JAMRA, Rami Abou; GUO, Michael H.; DAUBER, Andrew; NAKAGUMA, Marilena; MENDONCA, Berenice B.; JAYAKODY, Sajini N.; OZEL, A. Bilge; FANG, Qing; MA, Qianyi; LI, Jun Z.; BRUE, Thierry; MILLAN, Maria Ines Perez; ARNHOLD, Ivo J. P.; PFAEFFLE, Roland; KITZMAN, Jacob O.; CAMPER, Sally A.Pituitary hormone deficiency occurs in similar to 1:4,000 live births. Approximately 3% of the cases are due to mutations in the alpha isoform of POU1F1, a pituitary-specific transcriptional activator. We found four separate heterozygous missense variants in unrelated individuals with hypopituitarism that were predicted to affect a minor isoform, POU1F1 beta, which can act as a transcriptional repressor. These variants retain repressor activity, but they shift splicing to favor the expression of the beta isoform, resulting in dominant-negative loss of function. Using a high-throughput splicing reporter assay, we tested 1,070 single-nucleotide variants in POU1F1. We identified 96 splice-disruptive variants, including 14 synonymous variants. In separate cohorts, we found two additional synonymous variants nominated by this screen that co-segregate with hypopituitarism. This study underlines the importance of evaluating the impact of variants on splicing and provides a catalog for interpretation of variants of unknown significance in POU1F1.