PMID- 24259499 OWN - NLM STAT- MEDLINE DCOM- 20140929 LR - 20140121 IS - 1755-3245 (Electronic) IS - 0008-6363 (Linking) VI - 101 IP - 2 DP - 2014 Feb 1 TI - Glyoxalase-1 overexpression in bone marrow cells reverses defective neovascularization in STZ-induced diabetic mice. PG - 306-16 LID - 10.1093/cvr/cvt259 [doi] AB - AIMS: Methylglyoxal (MG) accumulates in diabetes and impairs neovascularization. This study assessed whether overexpressing the MG-metabolizing enzyme glyoxalase-1 (GLO1) in only bone marrow cells (BMCs) could restore neovascularization in ischaemic tissue of streptozotocin-induced diabetic mice. METHODS AND RESULTS: After 24 h of hyperglycaemic and hypoxic culture, BMCs from GLO1 overexpressing and wild-type (WT) diabetic mice were compared for migratory potential, viability, and mRNA expression of anti-apoptotic genes (Bcl-2 and Bcl-XL). In vivo, BMCs from enhanced green fluorescent protein (eGFP) mice that overexpress GLO1 were used to reconstitute the BM of diabetic mice (GLO1-diabetics). Diabetic and non-diabetic recipients of WT GFP(+) BM served as controls (WT-diabetics and non-diabetics, respectively). Following hindlimb ischaemia, the mobilization of BMCs was measured by flow cytometry. In hindlimbs, the presence of BM-derived angiogenic (GFP(+)CXCR4(+)) and endothelial (GFP(+)vWF(+)) cells and also arteriole density were determined by immunohistochemistry. Hindlimb perfusion was measured using laser Doppler. GLO1-BMCs had superior migratory potential, increased viability, and greater Bcl-2 and Bcl-XL expression, compared with WT BMCs. In vivo, the mobilization of pro-angiogenic BMCs (CXCR4(+), c-kit(+), and Flk(+)) was enhanced post-ischaemia in GLO1-diabetics compared to WT-diabetics. A greater number of GFP(+)CXCR4(+) and GFP(+)vWF(+) BMCs incorporated into the hindlimb tissue of GLO1-diabetics and non-diabetics than in WT-diabetics. Arteriole and capillary density and perfusion were also greater in GLO1-diabetics and non-diabetics. CONCLUSION: This study demonstrates that protection from MG uniquely in BM is sufficient to restore BMC function and neovascularization of ischaemic tissue in diabetes and identifies GLO1 as a potential therapeutic target. FAU - Vulesevic, Branka AU - Vulesevic B AD - Division of Cardiac Surgery, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, Canada K1Y 4W7. FAU - McNeill, Brian AU - McNeill B FAU - Geoffrion, Michele AU - Geoffrion M FAU - Kuraitis, Drew AU - Kuraitis D FAU - McBane, Joanne E AU - McBane JE FAU - Lochhead, Marina AU - Lochhead M FAU - Vanderhyden, Barbara C AU - Vanderhyden BC FAU - Korbutt, Gregory S AU - Korbutt GS FAU - Milne, Ross W AU - Milne RW FAU - Suuronen, Erik J AU - Suuronen EJ LA - eng GR - Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131120 PL - England TA - Cardiovasc Res JT - Cardiovascular research JID - 0077427 RN - 0 (Angiogenic Proteins) RN - 0 (Blood Glucose) RN - 0 (Cytokines) RN - 722KLD7415 (Pyruvaldehyde) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type III) RN - EC 1.14.13.39 (Nos3 protein, mouse) RN - EC 4.4.1.5 (Lactoylglutathione Lyase) SB - IM MH - Angiogenic Proteins/genetics/metabolism MH - Animals MH - Apoptosis MH - Blood Glucose/metabolism MH - Bone Marrow Cells/*enzymology MH - *Bone Marrow Transplantation MH - Cell Movement MH - Cell Survival MH - Cells, Cultured MH - Cytokines/metabolism MH - Diabetes Mellitus, Experimental/enzymology/genetics/physiopathology/*surgery MH - Diabetes Mellitus, Type 1/enzymology/genetics/physiopathology/*surgery MH - Diabetic Angiopathies/enzymology/genetics/physiopathology/*surgery MH - Hindlimb MH - Humans MH - Ischemia/enzymology/genetics/physiopathology/*surgery MH - Lactoylglutathione Lyase/genetics/*metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Muscle, Skeletal/*blood supply/pathology MH - *Neovascularization, Pathologic MH - Nitric Oxide Synthase Type III/genetics/metabolism MH - Oxidation-Reduction MH - Oxidative Stress MH - Pyruvaldehyde/metabolism MH - Recovery of Function MH - Regional Blood Flow MH - Time Factors MH - Up-Regulation OTO - NOTNLM OT - Bone marrow cells OT - Methylglyoxal OT - Neovascularization OT - Type 1 diabetes EDAT- 2013/11/22 06:00 MHDA- 2014/09/30 06:00 CRDT- 2013/11/22 06:00 PHST- 2013/11/22 06:00 [entrez] PHST- 2013/11/22 06:00 [pubmed] PHST- 2014/09/30 06:00 [medline] AID - cvt259 [pii] AID - 10.1093/cvr/cvt259 [doi] PST - ppublish SO - Cardiovasc Res. 2014 Feb 1;101(2):306-16. doi: 10.1093/cvr/cvt259. Epub 2013 Nov 20.