NDLI: Macrophages modulate fibrosis during newt lens regeneration

Content Provider	Springer Nature : BioMed Central
Author	Tsissios, Georgios Sallese, Anthony Perez-Estrada, J. Raul Tangeman, Jared A. Chen, Weihao Smucker, Byran Ratvasky, Sophia C. Grajales-Esquivel, Erika Martinez, Arielle Visser, Kimberly J. Joven Araus, Alberto Wang, Hui Simon, András Yun, Maximina H. Del Rio-Tsonis, Katia
Abstract	Background Previous studies have suggested that macrophages are present during lens regeneration in newts, but their role in the process is yet to be elucidated. Methods Here we generated a transgenic reporter line using the newt, Pleurodeles waltl, that traces macrophages during lens regeneration. Furthermore, we assessed early changes in gene expression during lens regeneration using two newt species, Notophthalmus viridescens and Pleurodeles waltl. Finally, we used clodronate liposomes to deplete macrophages during lens regeneration in both species and tested the effect of a subsequent secondary injury after macrophage recovery. Results Macrophage depletion abrogated lens regeneration, induced the formation of scar-like tissue, led to inflammation, decreased iris pigment epithelial cell (iPEC) proliferation, and increased rates of apoptosis in the eye. Some of these phenotypes persisted throughout the last observation period of 100 days and could be attenuated by exogenous FGF2 administration. A distinct transcript profile encoding acute inflammatory effectors was established for the dorsal iris. Reinjury of the newt eye alleviated the effects of macrophage depletion, including the resolution of scar-like tissue, and re-initiated the regeneration process. Conclusions Together, our findings highlight the importance of macrophages for facilitating a pro-regenerative environment in the newt eye by regulating fibrotic responses, modulating the overall inflammatory landscape, and maintaining the proper balance of early proliferation and late apoptosis of the iPECs.
Related Links	https://stemcellres.biomedcentral.com/counter/pdf/10.1186/s13287-024-03740-1.pdf
Ending Page	26
Page Count	26
Starting Page	1
File Format	HTM / HTML
ISSN	17576512
DOI	10.1186/s13287-024-03740-1
Journal	Stem Cell Research & Therapy
Issue Number	1
Volume Number	15
Language	English
Publisher	BioMed Central
Publisher Date	2024-05-14
Access Restriction	Open
Subject Keyword	Stem Cells Cell Biology Regenerative Medicine Tissue Engineering Biomedical Engineering and Bioengineering Lens regeneration Macrophage Tissue repair Inflammation Regenerative Medicine/Tissue Engineering
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Biochemistry, Genetics and Molecular Biology Molecular Medicine
Journal Impact Factor	7.1/2023
5-Year Journal Impact Factor	7.9/2023

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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