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Lymphangiogenesis: in vitro and in vivo models

Laboratory of Tumor and Development Biology, Groupe Interdisciplinaire de Génoprotéomique Appliqué-Cancer (GIGA-Cancer), University of Liège, Liège, Belgium

¹ Correspondence: Laboratory of Tumor and Developmental Biology, GIGA-Cancer, University of Liège, Tour de Pathologie, CHU (B23) Sart Tilman, Ave. de l’Hôpital 3, B-4000 Liège, Belgium. E-mail: agnes.noel{at}ulg.ac.be

Lymphangiogenesis, the formation of new lymphatic vessels from preexisting ones, is an important biological process associated with diverse pathologies, such as metastatic dissemination and graft rejection. In addition, lymphatic hypoplasia characterizes lymphedema, usually a progressive and lifelong condition for which no curative treatment exists. Much progress has been made in recent years in identifying molecules specifically expressed on lymphatic vessels and in the setting up of in vitro and in vivo models of lymphangiogenesis. These new tools rapidly provided an abundance of information on the mechanisms underlying lymphatic development and the progression of diseases associated with lymphatic dysfunction. In this review, we describe the common in vitro and in vivo models of lymphangiogenesis that have proven suitable for investigating lymphatic biology and the interactions occurring between lymphatic vessels and other cells, such as immune cells and cancer cells. Their rationales and limitations are discussed and illustrated by the most informative findings obtained with them.—Bruyère, F., Noël, A. Lymphangiogenesis: in vitro and in vivo models.

Key Words: lymphatic endothelial cell • lymphedema • metastatic dissemination • graft rejection