Isolation of human lymphatic malformation endothelial cells, their in vitro characterization and in vivo survival in a mouse xenograft model

Human lymphatic vascular malformations (LMs), also known as cystic hygromas or lymphangioma, consist of multiple lymphatic endothelial cell-lined lymph-containing cysts. No animal model of this disease exists. To develop a mouse xenograft model of human LM, CD34 Neg CD31 Pos LM lymphatic endothelial...

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Veröffentlicht in:Angiogenesis (London) 2014-01, Vol.17 (1), p.1-15
Hauptverfasser: Lokmic, Zerina, Mitchell, Geraldine M., Koh Wee Chong, Nicholas, Bastiaanse, Jacqueline, Gerrand, Yi-Wen, Zeng, Yiping, Williams, Elizabeth D., Penington, Anthony J.
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container_issue 1
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container_title Angiogenesis (London)
container_volume 17
creator Lokmic, Zerina
Mitchell, Geraldine M.
Koh Wee Chong, Nicholas
Bastiaanse, Jacqueline
Gerrand, Yi-Wen
Zeng, Yiping
Williams, Elizabeth D.
Penington, Anthony J.
description Human lymphatic vascular malformations (LMs), also known as cystic hygromas or lymphangioma, consist of multiple lymphatic endothelial cell-lined lymph-containing cysts. No animal model of this disease exists. To develop a mouse xenograft model of human LM, CD34 Neg CD31 Pos LM lymphatic endothelial cells (LM-LEC) were isolated from surgical specimens and compared to foreskin CD34 Neg CD31 Pos lymphatic endothelial cells (LECs). Cells were implanted into a mouse tissue engineering model for 1, 2 and 4 weeks. In vitro LM-LECs showed increased proliferation and survival under starvation conditions ( P  
doi_str_mv 10.1007/s10456-013-9371-8
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No animal model of this disease exists. To develop a mouse xenograft model of human LM, CD34 Neg CD31 Pos LM lymphatic endothelial cells (LM-LEC) were isolated from surgical specimens and compared to foreskin CD34 Neg CD31 Pos lymphatic endothelial cells (LECs). Cells were implanted into a mouse tissue engineering model for 1, 2 and 4 weeks. In vitro LM-LECs showed increased proliferation and survival under starvation conditions ( P  &lt; 0.0005 at 48 h, two-way ANOVA), increased migration ( P  &lt; 0.001, two-way ANOVA) and formed fewer ( P  = 0.029, independent samples t test), shorter tubes ( P  = 0.029, independent samples t test) than foreskin LECs. In vivo LM-LECs implanted into a Matrigel™-containing mouse chamber model assembled to develop vessels with dilated cystic lumens lined with flat endothelium, morphology similar to that of clinical LMs. Human foreskin LECs failed to survive implantation. In LM-LEC implanted chambers the percent volume of podoplanin Pos vessels was 1.18 ± 2.24 % at 1 week, 6.34 ± 2.68 % at 2 weeks and increasing to 7.67 ± 3.60 % at 4 weeks. In conclusion, the significantly increased proliferation, migration, resistance to apoptosis and decreased tubulogenesis of LM-LECs observed in vitro is likely to account for their survival and assembly into stable LM-like structures when implanted into a mouse vascularised chamber model. 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No animal model of this disease exists. To develop a mouse xenograft model of human LM, CD34 Neg CD31 Pos LM lymphatic endothelial cells (LM-LEC) were isolated from surgical specimens and compared to foreskin CD34 Neg CD31 Pos lymphatic endothelial cells (LECs). Cells were implanted into a mouse tissue engineering model for 1, 2 and 4 weeks. In vitro LM-LECs showed increased proliferation and survival under starvation conditions ( P  &lt; 0.0005 at 48 h, two-way ANOVA), increased migration ( P  &lt; 0.001, two-way ANOVA) and formed fewer ( P  = 0.029, independent samples t test), shorter tubes ( P  = 0.029, independent samples t test) than foreskin LECs. In vivo LM-LECs implanted into a Matrigel™-containing mouse chamber model assembled to develop vessels with dilated cystic lumens lined with flat endothelium, morphology similar to that of clinical LMs. Human foreskin LECs failed to survive implantation. 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No animal model of this disease exists. To develop a mouse xenograft model of human LM, CD34 Neg CD31 Pos LM lymphatic endothelial cells (LM-LEC) were isolated from surgical specimens and compared to foreskin CD34 Neg CD31 Pos lymphatic endothelial cells (LECs). Cells were implanted into a mouse tissue engineering model for 1, 2 and 4 weeks. In vitro LM-LECs showed increased proliferation and survival under starvation conditions ( P  &lt; 0.0005 at 48 h, two-way ANOVA), increased migration ( P  &lt; 0.001, two-way ANOVA) and formed fewer ( P  = 0.029, independent samples t test), shorter tubes ( P  = 0.029, independent samples t test) than foreskin LECs. In vivo LM-LECs implanted into a Matrigel™-containing mouse chamber model assembled to develop vessels with dilated cystic lumens lined with flat endothelium, morphology similar to that of clinical LMs. Human foreskin LECs failed to survive implantation. In LM-LEC implanted chambers the percent volume of podoplanin Pos vessels was 1.18 ± 2.24 % at 1 week, 6.34 ± 2.68 % at 2 weeks and increasing to 7.67 ± 3.60 % at 4 weeks. In conclusion, the significantly increased proliferation, migration, resistance to apoptosis and decreased tubulogenesis of LM-LECs observed in vitro is likely to account for their survival and assembly into stable LM-like structures when implanted into a mouse vascularised chamber model. This in vivo xenograft model will provide the basis of future studies of LM biology and testing of potential pharmacological interventions for patients with lymphatic malformations.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><pmid>23884796</pmid><doi>10.1007/s10456-013-9371-8</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record>
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subjects Animals
Antigens, CD34 - metabolism
Biomedical and Life Sciences
Biomedicine
Cancer Research
Cardiology
Cell Biology
Cell Proliferation
Cell Separation
Cell Survival
Child
Child, Preschool
Endothelial Cells - metabolism
Endothelial Cells - pathology
Endothelial Cells - transplantation
Female
Graft Survival
Heterografts
Humans
Infant
Lymphatic Vessels - abnormalities
Lymphatic Vessels - metabolism
Lymphatic Vessels - pathology
Male
Mice
Mice, SCID
Oncology
Ophthalmology
Original Paper
Platelet Endothelial Cell Adhesion Molecule-1 - metabolism
Time Factors
Tissue Engineering - methods
title Isolation of human lymphatic malformation endothelial cells, their in vitro characterization and in vivo survival in a mouse xenograft model
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