AncesTree: an interactive immunoglobulin lineage tree visualizer

High-throughput sequencing of human immunoglobulin genes allows analysis of antibody repertoires and the reconstruction of clonal lineage evolution. Phylip, an algorithm that has been originally developed for applications in ecology and macroevolution, can also be used for the phylogenic reconstruction of antibodies maturation pathway. The study of antibodies (Abs) affinity maturation is of specific interest to understand the generation of Abs with high affinity or broadly neutralizing activities. Phylogenic analysis enables the identification of the key somatic mutations required to achieve optimal antigen binding. To complement Phylip algorithm, we developed AncesTree, a graphic user interface (GUI) that aims to give researchers the opportunity to interactively explore antibodies clonal evolution. AncesTree displays interactive immunoglobulins (Ig) phylogenic tree, Ig related mutations and sequence alignments using additional information coming from specialized antibody tools (such as IMGT®). The GUI is a Java standalone application allowing interaction with Ig-tree that can run under Windows, Linux and Mac OS.

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