Bem-vindo ao site do Laboratório de Estabilidade Genômica!

 We study how cells signal and repair lesions to our genetic material, the DNA. We are particularly interested in how a post-translational modification called ADP-ribosylation accelerates DNA repair processes, and how mutations in genes involved in DNA damage signalling and repair cause rare genetic disorders characterized by neurodegeneration, cancer predisposition and premature aging.

Fluorescence microscopy of human cells in culture. Blue: DNA in the cell nucleus, green: actin filaments, red: mitochondria.
Microscopia de fluorescência de um ensaio de sister chromatid exchanges. Cromossomos de uma célula humanas estão marcados de forma que uma cromátide irmã seja visualizada em verde e a outra em azul. Em resposta a danos ao DNA, pode haver troca de informação genética entre as cromátides-irmãs pela via de recombinação homóloga, levando a trocas recíprocas no padrão de coloração dos cromossomos.

ADP-ribosylation is a post-translational modification of proteins with important roles in signaling the presence of DNA damage, in chromatin remodeling and recruitment of DNA repair factors to the damage site, as well as in a programmed cell death pathway called parthanatos. Recently we have also been interested in studying the role of ADP-ribosylation in other pathways, especially in the cellular response to viral infections.  

CONTACT US

Departamento de Bioquímica - IQ/USP

Av. Prof. Lineu Prestes, 748. São Paulo – SP – Brasil

nicolas@iq.usp.br