Premium
Angiogenic Potential of Microvessel Fragments is Independent of the Tissue of Origin and can be Influenced by the Cellular Composition of the Implants
Author(s) -
NUNES SARA S.,
KRISHNAN LAXMINARAYANAN,
GERARD CARTER S.,
DALE JACOB R.,
MADDIE MELISSA A.,
BENTON RICHARD L.,
HOYING JAMES B.
Publication year - 2010
Publication title -
microcirculation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.793
H-Index - 83
eISSN - 1549-8719
pISSN - 1073-9688
DOI - 10.1111/j.1549-8719.2010.00052.x
Subject(s) - microvessel , adipose tissue , angiogenesis , neovascularization , chemistry , collagenase , microbiology and biotechnology , pathology , biology , anatomy , medicine , biochemistry , cancer research , enzyme
Please cite this paper as: Nunes, Krishnan, Gerard, Dale, Maddie, Benton and Hoying (2010). Angiogenic Potential of Microvessel Fragments is Independent of the Tissue of Origin and can be Influenced by the Cellular Composition of the Implants. Microcirculation 17(7) , 557–567. Abstract We have demonstrated that MFs isolated from adipose retain angiogenic potential in vitro and form a mature, perfused network when implanted. However, adipose‐derived microvessels are rich in provascularizing cells that could uniquely drive neovascularization in adipose‐derived MFs implants. Objective: Investigate the ability of MFs from a different vascular bed to recapitulate adipose‐derived microvessel angiogenesis and network formation and analyze adipose‐derived vessel plasticity by assessing whether vessel function could be modulated by astrocyte‐like cells. Methods: MFs were isolated by limited collagenase digestion from rodent brain or adipose and assembled into 3D collagen gels in the presence or absence of GRPs. The resulting neovasculatures that formed following implantation were assessed by measuring 3D vascularity and vessel permeability to small and large molecular tracers. Results: Similar to adipose‐derived MFs, brain‐derived MFs can sprout and form a perfused neovascular network when implanted. Furthermore, when co‐implanted in the constructs, GRPs caused adipose‐derived vessels to express the brain endothelial marker glucose transporter‐1 and to significantly reduce microvessel permeability. Conclusion: Neovascularization involving isolated microvessel elements is independent of the tissue origin and degree of vessel specialization. In addition, adipose‐derived vessels have the ability to respond to environmental signals and change vessel characteristics.