Abstract
In recent years there has been increasing interest in the role of lymphatics in organ repair and regeneration, due to their importance in immune surveillance and fluid homeostasis. Experimental approaches aimed at boosting lymphangiogenesis following myocardial infarction in mice, were shown to promote healing of the heart. Yet, the mechanisms governing cardiac lymphatic growth remain unclear. Here we identify two distinct lymphatic populations in the hearts of zebrafish and mouse, one that forms through sprouting lymphangiogenesis, and the other by coalescence of isolated lymphatic cells. By tracing the development of each subset, we reveal diverse cellular origins and differential response to signaling cues. Finally, we show that lymphatic vessels are required for cardiac regeneration in zebrafish as mutants lacking lymphatics display severely impaired regeneration capabilities. Overall, our results provide novel insight into the mechanisms underlying lymphatic formation during development and regeneration, opening new avenues for interventions targeting specific lymphatic populations.
Article and author information
Author details
Funding
H2020 European Research Council (335605)
- Karina Yaniv
National Institutes of Health (R01 HL131319)
- Kenneth D Poss
National Institutes of Health (R01 136182)
- Kenneth D Poss
American Heart Association
- Kenneth D Poss
Fondation Leducq
- Kenneth D Poss
United States-Israel Binational Science Foundation (2015289)
- Karina Yaniv
Minerva Foundation (712610)
- Karina Yaniv
H&M Kimmel Inst. for Stem cell research, the Estate of Emile Mimran
- Karina Yaniv
National Institutes of Health (RO1-HL128503)
- Kristy Red-Horse
New York Stem Cell Foundation
- Kristy Red-Horse
Max-Planck-Gesellschaft
- Didier Y Stainier
Fondation Leducq
- Didier Y Stainier
National Institutes of Health (R01 HL081674)
- Kenneth D Poss
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
Ethics
Animal experimentation: This study was performed in strict accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of the National Institutes of Health. All of the animals were handled according to approved institutional animal care and use committee (IACUC) protocols (#01470218-2) of the Weizmann Institute of Science. The protocol was approved by the Committee on the Ethics of Animal Experiments of the Weizmann Institute of Science. All surgery in fish was performed under tricaine anesthesia, and every effort was made to minimize suffering.
Reviewing Editor
- Marianne E Bronner, California Institute of Technology, United States
Publication history
- Received: December 10, 2018
- Accepted: November 5, 2019
- Accepted Manuscript published: November 8, 2019 (version 1)
- Version of Record published: November 27, 2019 (version 2)
- Version of Record updated: December 4, 2019 (version 3)
Copyright
© 2019, Gancz et al.
This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.
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