PMID- 18840994 OWN - NLM STAT- MEDLINE DCOM- 20090616 LR - 20090407 IS - 1422-6421 (Electronic) IS - 1422-6405 (Linking) VI - 189 IP - 5 DP - 2009 TI - Novel system for degeneration of blood vessels by UV irradiation and subsequent regeneration using chick bone marrow cells. PG - 348-55 LID - 10.1159/000162494 [doi] AB - Recently, many results have been reported regarding the pluripotency of bone marrow cells (BMCs) with the aim of benefiting regenerative medicine for humans. Particularly, vessel formation by hematopoietic stem cells or vascular endothelial stem cells which were derived from bone marrow has received considerable interest, since the mechanism of vessel formation has been found to be involved in neoangiogenesis of serious diseases such as cancer. Most work on neoangiogenesis and regeneration has involved mammalian experimental systems, however the avian model is useful since the process of neoangiogenesis and regeneration of vessels can be observed with the whole embryo culture system. We have established a novel system using early chick embryos, where a portion of blood vessels are degenerated by UV irradiation, and vessel regeneration is then studied. Incubated embryos were partially covered with aluminum foil, from the embryonic body to the dorsal marginal vein, and irradiated with UV for 1 min. Donor BMCs were obtained from the femurs and tibias of chicks aged 10 days, fluorescently labeled with PKH26 and injected into the anterior vitelline vein of the recipients. In BMC-treated embryos the donor BMCs were observed around the UV-degenerated vessels, and regeneration of blood vessels occurred, in contrast to the untreated embryos. These results indicate that avian BMCs have the ability to participate in vessel regeneration, and the avian model used here may be a useful tool for studies of vessel neoangiogenesis and repair. CI - 2008 S. Karger AG, Basel. FAU - Usui, Fumitake AU - Usui F AD - Faculty of Agriculture, Shinshu University, Nagano, Japan. FAU - Yamamoto, Yasuhiro AU - Yamamoto Y FAU - Nakamura, Yoshiaki AU - Nakamura Y FAU - Ono, Tamao AU - Ono T FAU - Kagami, Hiroshi AU - Kagami H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081005 PL - Switzerland TA - Cells Tissues Organs JT - Cells, tissues, organs JID - 100883360 SB - IM MH - Animals MH - Blood Vessels/growth & development/*physiology/*radiation effects MH - Bone Marrow Cells/*cytology MH - Cells, Cultured MH - Chick Embryo MH - Chickens MH - Regeneration/*physiology MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tissue Engineering/methods MH - Ultraviolet Rays EDAT- 2008/10/09 09:00 MHDA- 2009/06/17 09:00 CRDT- 2008/10/09 09:00 PHST- 2007/11/26 00:00 [accepted] PHST- 2008/10/09 09:00 [pubmed] PHST- 2009/06/17 09:00 [medline] PHST- 2008/10/09 09:00 [entrez] AID - 000162494 [pii] AID - 10.1159/000162494 [doi] PST - ppublish SO - Cells Tissues Organs. 2009;189(5):348-55. doi: 10.1159/000162494. Epub 2008 Oct 5.