Cancer Science Biomedical Genomics
Studying tumour genomes
Our research is focused on the study of cancer from a genomics perspective. We are particularly interested in the identification of cancer driver mutations, genes and pathways across tumour types and in the study of their potential as therapeutic targets.
1. Understanding mutational processes
Tumour genomes contain thousands of mutations, which can be identified by Next- Generation Sequencing technologies. By studying the observed pattern of these somatic mutations across genomic regions, we are able to explore the basic cell mechanisms that produce them. The interplay between these mechanisms, such as internal and external insults that damage DNA, chromosomal replication, transcription, and DNA repair mechanisms, leads to mutational processes that give rise to heterogeneous patterns of somatic mutations across the genome.
We have detected, for instance interactions between the machineries of transcription regulation and nucleotide excision repair (NER). Specifically, we recently demonstrated that the binding of transcription factors to their binding sites hinder the efficiency of NER, resulting in the generation of a greater number of mutations in the transcription factor binding site than in neighbouring regions (http://www.nature.com/nature/journal/v532/n7598/abs/nature17661.html).
2. Finding the drivers of cancer
Cancer is mainly a genetic disease. It is caused by genomic alterations that confer somatic cells competitive advantages over neighbouring cells in the same tissue. The genes affected by these alterations are commonly referred to as cancer drivers because they drive the abnormal growth of malignant cells. Recently, important international initiatives have sequenced the exomes and genomes of thousands of tumours belonging to different types of cancer. One of the main goals of the colossal effort channelled into this endeavour is the identification of cancer driver genes and, more recently, also potential driver non-coding genomic elements, such as promoters, enhancers, and non-coding RNAs.
Given that genomic alterations in driver genomic elements are positively selected in the course of tumorigenesis, an effective approach to detect these elements is to find signals of positive selection in their mutational patterns. In recent years, as part of the aforementioned initiatives, we have built bioinformatics tools to identify genomic elements that bear signals of positive selection in their mutational patterns across cohorts of tumours. We call this suite of methods Oncodrives. Using a combination of some of these methods, and others on large pan-cancer cohorts of tumours, we produce comprehensive and reliable catalogues of cancer driver genes. This information is available online at intogen.org
3. Contributing to precision medicine
Precision medicine—understood as the ability to prescribe anti-cancer drugs that specifically target driver alterations in a given tumour—as opposed to traditional chemotherapeutic approaches is an emerging paradigm in clinical and translational research in oncology. The possibility to associate the alterations observed in a patient’s tumour with suitable anti-cancer therapies relies heavily on our ability to accurately identify the alterations that drive the malignancy, as well as those that predict its sensitivity or resistance to drugs.
Our lab seeks to contribute to the advancement of precision medicine, in particular the interpretation of the genomic variants of tumours, thus facilitating the identification of therapeutic options for cancer patients. With this aim, we have developed an approach and several bioinformatics resources to accurately interpret alterations in human tumours. This approach is available at CancerGenomeInterpreter.org.
This group receives financial support from the following sources:
- Ministerio de Economía y Competitividad
- Marató TV3
- H2020 - MedBionformatics
- Instituto de Salud Carlos III
“Finding noncoding cancer drivers" (NONCODRIVERS), financiado por el European Research Council (ERC) mediante el Programa de Investigación e Innovación de la Unión Europea Horizonte 2020. Referencia: 682398
"Exploring mechanisms of resistance in adult and pediatric T-Acute lymphoblastic leukemia", financiado por la Fundación Científica AECC. Referencia: GC10173697BIGA
"Computational ONcology TRaining Alliance" (CONTRA), financiado por la Comisión Europea mediante el Programa de Innovación e Investigación de la Unión Europea Horizonte 2020 bajo la acción Maire Sklodowska-Curie (ITN). Referencia: 766030
Grup de Recerca consolidat (SGR 2017-2019) de la Secretaria d'Universitats i Recerca del Departament d'Empresa i Coneixement de la Generalitat de Catalunya. Agencia de Gestió d'Ajuts Universitaris i de Recerca (AGAUR). Referencia: 2017 SGR 1433
Plataforma de apoyo a la Investigación en Ciencias y Tecnología de la Salud de la convocatoria de 2017 de la Acción Estratégica en Salud 2013-2016, del Instituto de Salud Carlos III (ISCIII), pudiendo estar cofinanciada con cargo al Fondo Europeo de Desarrollo Regional (FEDER). Expediente PT17/0009/0013 (Plataforma de Bioinformática)
Avanzando en la interpretación de genomas de tumores para medicina personalizada del cáncer" (INTERPRETA), cofinanciado por el Ministerio de Economía y Competitividad y por el Fondo Europeo de Desarrollo Regional (FEDER) de la Unión Europea, una manera de hacer Europa. Referencia: SAF2015-66084-R (MINECO/FEDER, UE)
"Creating medically-driven integrative bioinformatics applications focused on oncology, CNS disorders and their comorbidities" (MedBioinformatics), financiado por la Comisión Europea mediante el Programa de Investigación e Innovación de la Unión Europea Horizonte 2020. Referencia: 634143