@article {892,
	title = {Fetal-like reversion in the regenerating intestine is regulated by mesenchymal asporin},
	journal = {Cell Stem Cell},
	volume = {32},
	year = {2025},
	month = {Jan-04-2025},
	pages = {613 - 626.e8},
	abstract = {Mesenchymal cells and the extracellular matrix (ECM) support epithelium during homeostasis and regeneration. However, the role of the mesenchyme in epithelial conversion into a fetal-like regenerative state after damage is not known. We modeled epithelial regeneration by culturing intestinal epithelium on decellularized small intestinal scaffolds (iECM) and identify asporin (Aspn), an ECM-bound proteoglycan, as a critical mediator of epithelial fetal-like reprogramming. After damage, transient increase in Aspn expression by the pericryptal fibroblasts induces epithelial transforming growth factor b (TGF-b)-signaling via CD44 and promotes timely epithelial reprogramming. Temporal control of Aspn is lost in old mice, and after damage, the persistently high level of Aspn stagnates epithelium in the regenerative state. Increase in Wnt signaling can resolve the stagnated regenerative program of the old epithelium, promoting restoration of tissue function. In summary, we establish a platform for modeling epithelial injury responses ex vivo and show that the mesenchymal Aspn-producing niche modulates tissue repair by regulating epithelial fetal-like reprogramming.},
	issn = {19345909},
	doi = {10.1016/j.stem.2025.02.009},
	url = {https://www.sciencedirect.com/science/article/pii/S1934590925000487},
	author = {Iqbal, Sharif and Andersson, Simon and Nesta, Ernesta and Pentinmikko, Nalle and Kumar, Ashish and Jha, Sawan K. and Borshagovski, Daniel and Webb, Anna and Gebert, Nadja and Viitala, Emma W. and Ritchie, Alexandra and Scharaw, Sandra and Kuuluvainen, Emilia and Larsen, Hjalte L. and Saarinen, Tuure and Juuti, Anne and Ristim{\"a}ki, Ari and Jeltsch, Michael and Ori, Alessandro and Varjosalo, Markku and Pietil{\"a}inen, Kirsi H. and Ollila, Saara and Jensen, Kim B. and Oudhoff, Menno J. and Katajisto, Pekka}
}
@article {858,
	title = {The relationship between the secondary vascular system and the lymphatic vascular system in fish},
	journal = {Biological Reviews},
	year = {2024},
	month = {Apr-06-2026},
	issn = {1464-7931},
	doi = {10.1111/brv.13114},
	url = {https://onlinelibrary.wiley.com/doi/10.1111/brv.13114},
	author = {Panara, Virginia and Varaliov{\'a}, Zuzana and Wilting, J{\"o}rg and Koltowska, Katarzyna and Jeltsch, Michael}
}
@article {589,
	title = {Efficient activation of the lymphangiogenic growth factor VEGF-C requires the C-terminal domain of VEGF-C and the N-terminal domain of CCBE1},
	journal = {Scientific Reports},
	volume = {7},
	year = {2017},
	month = {2017/07/07/},
	pages = {4916},
	doi = {10.1038/s41598-017-04982-1},
	url = {https://www.nature.com/articles/s41598-017-04982-1},
	author = {Jha, SK and Rauniyar, Khushbu and K{\"a}rp{\"a}nen, Terhi and Lepp{\"a}nen, Veli-Matti and Brouillard, Pascal and Vikkula, Miikka and Alitalo, Kari and Jeltsch, Michael}
}
@article {425,
	title = {A truncation allele in vascular endothelial growth factor c reveals distinct modes of signaling during lymphatic and vascular development.},
	journal = {Development},
	volume = {140},
	year = {2013},
	month = {2013 Apr},
	pages = {1497-506},
	abstract = {<p>Vascular endothelial growth factor C (Vegfc) is a secreted protein that guides lymphatic development in vertebrate embryos. However, its role during developmental angiogenesis is not well characterized. Here, we identify a mutation in zebrafish vegfc that severely affects lymphatic development and leads to angiogenesis defects on sensitized genetic backgrounds. The um18 mutation prematurely truncated Vegfc, blocking its secretion and paracrine activity but not its ability to activate its receptor Flt4. When expressed in endothelial cells, vegfc(um18) could not rescue lymphatic defects in mutant embryos, but induced ectopic blood vessel branching. Furthermore, vegfc-deficient endothelial cells did not efficiently contribute to tip cell positions in developing sprouts. Computational modeling together with assessment of endothelial cell dynamics by time-lapse analysis suggested that an autocrine Vegfc/Flt4 loop plays an important role in migratory persistence and filopodia stability during sprouting. Our results suggest that Vegfc acts in two distinct modes during development: as a paracrine factor secreted from arteries to guide closely associated lymphatic vasculature and as an autocrine factor to drive migratory persistence during angiogenesis.</p>},
	keywords = {Alleles, Animals, Animals, Genetically Modified, Autocrine Communication, Blood Vessels, Cell Movement, Codon, Nonsense, Embryo, Nonmammalian, Female, Lymphatic System, Mice, Mice, Knockout, Neovascularization, Physiologic, Paracrine Communication, Protein Isoforms, Signal Transduction, Vascular Endothelial Growth Factor C, Zebrafish, Zebrafish Proteins},
	issn = {1477-9129},
	doi = {10.1242/dev.084152},
	author = {Villefranc, Jacques A and Nicoli, Stefania and Bentley, Katie and Jeltsch, Michael and Zarkada, Georgia and Moore, John C and Gerhardt, Holger and Alitalo, Kari and Lawson, Nathan D}
}
@article {39,
	title = {Claudin-like protein 24 interacts with the VEGFR-2 and VEGFR-3 pathways and regulates lymphatic vessel development},
	journal = {Genes Dev},
	volume = {24},
	year = {2010},
	month = {2010/May/},
	pages = {875 - 80},
	abstract = {The Claudin-like protein of 24 kDa (CLP24) is a hypoxia-regulated transmembrane protein of unknown function. We show here that clp24 knockdown in Danio rerio and Xenopus laevis results in defective lymphatic development. Targeted disruption of Clp24 in mice led to enlarged lymphatic vessels having an abnormal smooth muscle cell coating. We also show that the Clp24(-/-) phenotype was further aggravated in the Vegfr2(+/LacZ) or Vegfr3(+/LacZ) backgrounds and that CLP24 interacts with vascular endothelial growth factor receptor-2 (VEGFR-2) and VEGFR-3 and attenuates the transcription factor CREB phosphorylation via these receptors. Our results indicate that CLP24 is a novel regulator of VEGFR-2 and VEGFR-3 signaling pathways and of normal lymphatic vessel structure.},
	url = {http://view.ncbi.nlm.nih.gov/pubmed/20439428},
	author = {Saharinen, Pipsa and Helotera, Hanna and Miettinen, Juho and Norrmen, Camilla and D{\textquoteright}Amico, Gabriela and Jeltsch, Michael and Langenberg, Tobias and Vandevelde, Wouter and Ny, Annelii and Dewerchin, Mieke and Carmeliet, Peter and Alitalo, Kari}
}
@article {36,
	title = {Reevaluation of the role of VEGF-B suggests a restricted role in the revascularization of the ischemic myocardium},
	journal = {Arterioscler Thromb Vasc Biol},
	volume = {28},
	year = {2008},
	month = {2008/Sep/},
	pages = {1614 - 20},
	abstract = {OBJECTIVE: The endogenous role of the VEGF family member vascular endothelial growth factor-B (VEGF-B) in pathological angiogenesis remains unclear. METHODS AND RESULTS: We studied the role of VEGF-B in various models of pathological angiogenesis using mice lacking VEGF-B (VEGF-B(-/-)) or overexpressing VEGF-B(167). After occlusion of the left coronary artery, VEGF-B deficiency impaired vessel growth in the ischemic myocardium whereas, in wild-type mice, VEGF-B(167) overexpression enhanced revascularization of the infarct and ischemic border zone. By contrast, VEGF-B deficiency did not affect vessel growth in the wounded skin, hypoxic lung, ischemic retina, or ischemic limb. Moreover, VEGF-B(167) overexpression failed to enhance vascular growth in the skin or ischemic limb. CONCLUSIONS: VEGF-B appears to have a relatively restricted angiogenic activity in the ischemic heart. These insights might offer novel therapeutic opportunities.},
	url = {http://view.ncbi.nlm.nih.gov/pubmed/18511699},
	author = {Li, Xuri and Tjwa, Marc and Van Hove, Inge and Enholm, Berndt and Neven, Elke and Paavonen, Karri and Jeltsch, Michael and Juan, Toni Diez and Sievers, Richard E and Chorianopoulos, Emmanuel and Wada, Hiromichi and Vanwildemeersch, Maarten and Noel, Agnes and Foidart, Jean-Michel and Springer, Matthew L and von Degenfeld, Georges and Dewerchin, Mieke and Blau, Helen M and Alitalo, Kari and Eriksson, Ulf and Carmeliet, Peter and Moons, Lieve}
}
@article {27,
	title = {Intrinsic versus microenvironmental regulation of lymphatic endothelial cell phenotype and function},
	journal = {FASEB J},
	volume = {17},
	year = {2003},
	month = {2003/Nov/},
	pages = {2006 - 13},
	abstract = {Vascular endothelial cells are characterized by a high degree of functional and phenotypic plasticity, which is controlled both by their pericellular microenvironment and their intracellular gene expression programs. To gain further insight into the mechanisms regulating the endothelial cell phenotype, we have compared the responses of lymphatic endothelial cells (LECs) and blood vascular endothelial cells (BECs) to vascular endothelial growth factors (VEGFs). VEGFR-3-specific signals are sufficient for LEC but not BEC proliferation, as shown by the ability of the specific ligand VEGF-C156S to stimulate cell cycle entry only in LECs. On the other hand, we found that VEGFR-3 stimulation did not induce LEC cell shape changes typical of VEGFR-2-stimulated LECs, indicating receptor-specific differences in the cytoskeletal responses. Genes induced via VEGFR-2 also differed between BECs and LECs: angiopoietin-2 (Ang-2) was induced via VEGFR-2 in BECs and LECs, but the smooth muscle cell (SMC) chemoattractant BMP-2 was induced only in BECs. Both BECs and LECs were able to promote SMC chemotaxis, but contact with SMCs led to down-regulation of VEGFR-3 expression in BECs in a 3-dimensional coculture system. This was consistent with the finding that VEGFR-3 is down-regulated in vivo at sites of endothelial cell-pericyte/smooth muscle cell contacts. Collectively, these data show intrinsic cell-specific differences of BEC and LEC responses to VEGFs and identify a pericellular regulatory mechanism for VEGFR-3 down-regulation in endothelial cells.},
	url = {http://view.ncbi.nlm.nih.gov/pubmed/14597670},
	author = {Veikkola, Tanja and Lohela, Marja and Ikenberg, Kristian and M{\"a}kinen, Taija and Korff, Thomas and Saaristo, Anne and Petrova, Tatania and Jeltsch, Michael and Augustin, Hellmut G and Alitalo, Kari}
}
@article {24,
	title = {Adenoviral VEGF-C overexpression induces blood vessel enlargement, tortuosity, and leakiness but no sprouting angiogenesis in the skin or mucous membranes},
	journal = {FASEB J},
	volume = {16},
	year = {2002},
	month = {2002/Jul/},
	pages = {1041 - 9},
	abstract = {Vascular endothelial growth factors (VEGFs) and their receptors (VEGFRs) are important regulators of blood and lymphatic vessel growth and vascular permeability. The VEGF-C/VEGFR-3 signaling pathway is crucial for lymphangiogenesis, and heterozygous inactivating missense mutations of the VEGFR-3 gene are associated with hereditary lymphedema. However, VEGF-C can have potent effects on blood vessels because its receptor VEGFR-3 is expressed in certain blood vessels and because the fully processed form of VEGF-C also binds to the VEGFR-2 of blood vessels. To characterize the in vivo effects of VEGF-C on blood and lymphatic vessels, we have overexpressed VEGF-C via adenovirus- and adeno-associated virus-mediated transfection in the skin and respiratory tract of athymic nude mice. This resulted in dose-dependent enlargement and tortuosity of veins, which, along with the collecting lymphatic vessels were found to express VEGFR-2. Expression of angiopoietin 1 blocked the increased leakiness of the blood vessels induced by VEGF-C whereas vessel enlargement and lymphangiogenesis were not affected. However, angiogenic sprouting of new blood vessels was not observed in response to AdVEGF-C or AAV-VEGF-C. These results show that virally produced VEGF-C induces blood vessel changes, including vascular leak, but its angiogenic potency is much reduced compared with VEGF in normal skin.},
	url = {http://view.ncbi.nlm.nih.gov/pubmed/12087065},
	author = {Saaristo, Anne and Veikkola, Tanja and Enholm, Berndt and Hyt{\"o}nen, Maija and Arola, Johanna and Pajusola, Katri and Turunen, Pa{\"\i}vi and Jeltsch, Michael and Karkkainen, Marika J and Kerjaschki, Dontscho and Bueler, Hansruedi and Yl{\"a}-Herttuala, Seppo and Alitalo, Kari}
}
@article {22,
	title = {Signalling via vascular endothelial growth factor receptor-3 is sufficient for lymphangiogenesis in transgenic mice},
	journal = {EMBO J},
	volume = {20},
	year = {2001},
	month = {2001/Mar/},
	pages = {1223 - 31},
	abstract = {Vascular endothelial growth factor receptor-3 (VEGFR-3) has an essential role in the development of embryonic blood vessels; however, after midgestation its expression becomes restricted mainly to the developing lymphatic vessels. The VEGFR-3 ligand VEGF-C stimulates lymphangiogenesis in transgenic mice and in chick chorioallantoic membrane. As VEGF-C also binds VEGFR-2, which is expressed in lymphatic endothelia, it is not clear which receptors are responsible for the lymphangiogenic effects of VEGF-C. VEGF-D, which binds to the same receptors, has been reported to induce angiogenesis, but its lymphangiogenic potential is not known. In order to define the lymphangiogenic signalling pathway we have created transgenic mice overexpressing a VEGFR-3-specific mutant of VEGF-C (VEGF-C156S) or VEGF-D in epidermal keratinocytes under the keratin 14 promoter. Both transgenes induced the growth of lymphatic vessels in the skin, whereas the blood vessel architecture was not affected. Evidence was also obtained that these growth factors act in a paracrine manner in vivo. These results demonstrate that stimulation of the VEGFR-3 signal transduction pathway is sufficient to induce specifically lymphangiogenesis in vivo.},
	url = {http://view.ncbi.nlm.nih.gov/pubmed/11250889},
	author = {Veikkola, T and Jussila, L and Makinen, T and Karpanen, T and Jeltsch, M and Petrova, T V and Kubo, H and Thurston, G and McDonald, D M and Achen, M G and Stacker, S A and Alitalo, K}
}
@conference {653,
	title = {Signalling via VEGFR-3 is sufficient for lymphangiogenesis in transgenic mice.},
	booktitle = {Molecular Targets and Cancer Therapeutics: Discovery, Biology, and Clinical Applications},
	year = {2001},
	month = {2001/10/29/},
	address = {Miami Beach, Florida},
	author = {Jussila, L. and Veikkola, T. and Jeltsch, M. and Thurston, G. and McDonald, D. and Achen, M. and Stacker, S. and Alitalo, K.}
}
@article {16,
	title = {Vascular endothelial growth factor D (VEGF-D) is a ligand for the tyrosine kinases VEGF receptor 2 (Flk1) and VEGF receptor 3 (Flt4)},
	journal = {Proc Natl Acad Sci U S A},
	volume = {95},
	year = {1998},
	month = {1998/Jan/},
	pages = {548 - 53},
	abstract = {We have identified a member of the VEGF family by computer-based homology searching and have designated it VEGF-D. VEGF-D is most closely related to VEGF-C by virtue of the presence of N- and C-terminal extensions that are not found in other VEGF family members. In adult human tissues, VEGF-D mRNA is most abundant in heart, lung, skeletal muscle, colon, and small intestine. Analyses of VEGF-D receptor specificity revealed that VEGF-D is a ligand for both VEGF receptors (VEGFRs) VEGFR-2 (Flk1) and VEGFR-3 (Flt4) and can activate these receptors. However. VEGF-D does not bind to VEGFR-1. Expression of a truncated derivative of VEGF-D demonstrated that the receptor-binding capacities reside in the portion of the molecule that is most closely related in primary structure to other VEGF family members and that corresponds to the mature form of VEGF-C. In addition, VEGF-D is a mitogen for endothelial cells. The structural and functional similarities between VEGF-D and VEGF-C define a subfamily of the VEGFs.},
	url = {http://view.ncbi.nlm.nih.gov/pubmed/9435229},
	author = {Achen, M G and Jeltsch, M and Kukk, E and M{\"a}kinen, T and Vitali, A and Wilks, A F and Alitalo, K and Stacker, S A}
}
