Regulation of endothelial cell and endothelial progenitor cell survival and vasculogenesis by integrin-linked kinase

Hyun Jai Cho, Seock Won Youn, Soo In Cheon, Tae Youn Kim, Jin Hur, Shu Ying Zhang, Seung Pyo Lee, Kyung Woo Park, Myoung Mook Lee, Yun Shik Choi, Young Bae Park, Hyo Soo Kim

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Objective - New vessel formation is a dynamic process of attachment, detachment, and reattachment of endothelial cells (ECs) and endothelial progenitor cells (EPCs) with each other and with the extracellular matrix (ECM). Integrin-linked kinase (ILK) plays a pivotal role in ECM-mediated signaling. Therefore, we investigated the role of ILK in ECs and EPCs during neovascularization. Methods and Results - In human umbilical cord vein ECs and EPCs, endogenous ILK expression, along with subsequent cell survival signals phospho-Akt and phospho-glycogen synthase kinase 3β, was reduced after anchorage or nutrient deprivation. Even brief anchorage deprivation resulted in retarded capillary tube formation by ECs. Adenoviral ILK gene transfer in ECs and EPCs reversed the decrease in cell survival signals after anchorage or nutrient deprivation, leading to enhanced survival, reduced apoptosis, and significantly accelerated the functional recovery after reattachment. And ILK overexpressing EPCs significantly improved blood flow recovery and prevented limb loss in nude mice hindlimb ischemia model. Furthermore, the efficacy of systemic delivery was equivalent to local injection of ILK-EPCs. Conclusions - ILK overexpression protects ECs and EPCs from anchorage- or nutrient-deprived stress and enhances neovascularization, suggesting that ILK is an optimal target gene for genetically modified cell-based therapy. Neovascularization is a dynamic process of detachment and reattachment of ECs and EPCs. Endogenous ILK expression was decreased in various stress conditions, and the gene transfer of ILK protected ECs and EPCs from temporary anchorage or nutrient deprivation. Furthermore, ILK gene transfer in EPCs significantly enhanced neovascularization in vivo.

Original languageEnglish (US)
Pages (from-to)1154-1160
Number of pages7
JournalArteriosclerosis, thrombosis, and vascular biology
Volume25
Issue number6
DOIs
StatePublished - Jun 1 2005

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Cell Survival
Endothelial Cells
Food
Genes
Extracellular Matrix
Endothelial Progenitor Cells
integrin-linked kinase
Glycogen Synthase Kinase 3
Umbilical Cord
Human Umbilical Vein Endothelial Cells
Hindlimb
Cell- and Tissue-Based Therapy
Nude Mice
Ischemia
Extremities
Apoptosis
Injections

Keywords

  • Angiogenesis
  • Endothelium
  • Integrin-linked kinase
  • Ischemia

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Regulation of endothelial cell and endothelial progenitor cell survival and vasculogenesis by integrin-linked kinase. / Cho, Hyun Jai; Youn, Seock Won; Cheon, Soo In; Kim, Tae Youn; Hur, Jin; Zhang, Shu Ying; Lee, Seung Pyo; Park, Kyung Woo; Lee, Myoung Mook; Choi, Yun Shik; Park, Young Bae; Kim, Hyo Soo.

In: Arteriosclerosis, thrombosis, and vascular biology, Vol. 25, No. 6, 01.06.2005, p. 1154-1160.

Research output: Contribution to journalArticle

Cho, HJ, Youn, SW, Cheon, SI, Kim, TY, Hur, J, Zhang, SY, Lee, SP, Park, KW, Lee, MM, Choi, YS, Park, YB & Kim, HS 2005, 'Regulation of endothelial cell and endothelial progenitor cell survival and vasculogenesis by integrin-linked kinase', Arteriosclerosis, thrombosis, and vascular biology, vol. 25, no. 6, pp. 1154-1160. https://doi.org/10.1161/01.ATV.0000164312.20008.93
Cho, Hyun Jai ; Youn, Seock Won ; Cheon, Soo In ; Kim, Tae Youn ; Hur, Jin ; Zhang, Shu Ying ; Lee, Seung Pyo ; Park, Kyung Woo ; Lee, Myoung Mook ; Choi, Yun Shik ; Park, Young Bae ; Kim, Hyo Soo. / Regulation of endothelial cell and endothelial progenitor cell survival and vasculogenesis by integrin-linked kinase. In: Arteriosclerosis, thrombosis, and vascular biology. 2005 ; Vol. 25, No. 6. pp. 1154-1160.
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T1 - Regulation of endothelial cell and endothelial progenitor cell survival and vasculogenesis by integrin-linked kinase

AU - Cho, Hyun Jai

AU - Youn, Seock Won

AU - Cheon, Soo In

AU - Kim, Tae Youn

AU - Hur, Jin

AU - Zhang, Shu Ying

AU - Lee, Seung Pyo

AU - Park, Kyung Woo

AU - Lee, Myoung Mook

AU - Choi, Yun Shik

AU - Park, Young Bae

AU - Kim, Hyo Soo

PY - 2005/6/1

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N2 - Objective - New vessel formation is a dynamic process of attachment, detachment, and reattachment of endothelial cells (ECs) and endothelial progenitor cells (EPCs) with each other and with the extracellular matrix (ECM). Integrin-linked kinase (ILK) plays a pivotal role in ECM-mediated signaling. Therefore, we investigated the role of ILK in ECs and EPCs during neovascularization. Methods and Results - In human umbilical cord vein ECs and EPCs, endogenous ILK expression, along with subsequent cell survival signals phospho-Akt and phospho-glycogen synthase kinase 3β, was reduced after anchorage or nutrient deprivation. Even brief anchorage deprivation resulted in retarded capillary tube formation by ECs. Adenoviral ILK gene transfer in ECs and EPCs reversed the decrease in cell survival signals after anchorage or nutrient deprivation, leading to enhanced survival, reduced apoptosis, and significantly accelerated the functional recovery after reattachment. And ILK overexpressing EPCs significantly improved blood flow recovery and prevented limb loss in nude mice hindlimb ischemia model. Furthermore, the efficacy of systemic delivery was equivalent to local injection of ILK-EPCs. Conclusions - ILK overexpression protects ECs and EPCs from anchorage- or nutrient-deprived stress and enhances neovascularization, suggesting that ILK is an optimal target gene for genetically modified cell-based therapy. Neovascularization is a dynamic process of detachment and reattachment of ECs and EPCs. Endogenous ILK expression was decreased in various stress conditions, and the gene transfer of ILK protected ECs and EPCs from temporary anchorage or nutrient deprivation. Furthermore, ILK gene transfer in EPCs significantly enhanced neovascularization in vivo.

AB - Objective - New vessel formation is a dynamic process of attachment, detachment, and reattachment of endothelial cells (ECs) and endothelial progenitor cells (EPCs) with each other and with the extracellular matrix (ECM). Integrin-linked kinase (ILK) plays a pivotal role in ECM-mediated signaling. Therefore, we investigated the role of ILK in ECs and EPCs during neovascularization. Methods and Results - In human umbilical cord vein ECs and EPCs, endogenous ILK expression, along with subsequent cell survival signals phospho-Akt and phospho-glycogen synthase kinase 3β, was reduced after anchorage or nutrient deprivation. Even brief anchorage deprivation resulted in retarded capillary tube formation by ECs. Adenoviral ILK gene transfer in ECs and EPCs reversed the decrease in cell survival signals after anchorage or nutrient deprivation, leading to enhanced survival, reduced apoptosis, and significantly accelerated the functional recovery after reattachment. And ILK overexpressing EPCs significantly improved blood flow recovery and prevented limb loss in nude mice hindlimb ischemia model. Furthermore, the efficacy of systemic delivery was equivalent to local injection of ILK-EPCs. Conclusions - ILK overexpression protects ECs and EPCs from anchorage- or nutrient-deprived stress and enhances neovascularization, suggesting that ILK is an optimal target gene for genetically modified cell-based therapy. Neovascularization is a dynamic process of detachment and reattachment of ECs and EPCs. Endogenous ILK expression was decreased in various stress conditions, and the gene transfer of ILK protected ECs and EPCs from temporary anchorage or nutrient deprivation. Furthermore, ILK gene transfer in EPCs significantly enhanced neovascularization in vivo.

KW - Angiogenesis

KW - Endothelium

KW - Integrin-linked kinase

KW - Ischemia

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