Bertrand Poussier, MD, Alfredo C

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Presentation transcript:

Resveratrol inhibits vascular smooth muscle cell proliferation and induces apoptosis Bertrand Poussier, MD, Alfredo C. Cordova, MD, Jean-Pierre Becquemin, MD, Bauer E. Sumpio, MD, PhD Journal of Vascular Surgery Volume 42, Issue 6, Pages 1190-1190.e14 (December 2005) DOI: 10.1016/j.jvs.2005.08.014 Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Fig 1 Effect of resveratrol on smooth muscle cell (SMC) proliferation. SMCs maintained in 10% fetal bovine serum (FBS) were exposed to different concentrations of resveratrol for up to 3 days. A, Results for a typical experiment. The x-axis represents the time course of the experiment, and the y-axis represents the cell number/well measured with a hemocytometer. The control is not exposed to resveratrol. *P < .005 compared with the control. +P < .01 compared with resveratrol 10−6 M. B, This graph shows the mean ± SEM for three separate experiments, normalized as a percentage increase on day 1 and day 3. *P < .001 compared with control. +P < .002 compared with resveratrol 10−6 M. There is a dose dependent effect of resveratrol on SMC proliferation. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Fig 2 Flow cytometry studies of smooth muscle cells (SMC) exposed to resveratrol 10−5 M for 24 hours. See “Methods” for details. A, Representative flow cytometric histograms of SMC in the presence of absence of resveratrol 10−5 M for 24 hours. The y-axis represents the percentage of cells which are in the G0-1 (growth, first red curve), S (DNA synthesis, green curve), or G2-M (mitosis, second red curve), phase of the cell cycle. The x-axis represents the different experimental conditions. There is a significant increase in the percentage of cells in S phase, in the resveratrol treated cells. B, Mean results in percentage of three experiments. All percentages have been grouped according to the phase of the cell cycle, respectively G0-G1, S, and G2-M phases. *P < .0001 compared with the same phase of control day 1. +P < .04 compared with the same phase of control day 1. There is a block between G0-G1 and S phase in the cell cycle with resveratrol 10−5 M. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Fig 3 Western blot for proliferating nuclear antigen (PCNA), cyclin-dependent kinase 2 (CDK2), and cyclin E of smooth muscle cells exposed to resveratrol 10−5 M for 24 hours. Total Akt is used to assure equal protein loading of each lane. The time course of experimentation is listed below each blot. These blots are representative of at least 3 different experiments for each protein. No significant changes were observed. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Fig 4 Effect of resveratrol on smooth muscle cell (SMC) apoptosis by TUNEL assay. SMCs maintained in 10% fetal bovine serum (FBS) were exposed to different concentrations of resveratrol for 24 hours. A, Representative TUNEL images of SMCs exposed to varying concentrations of resveratrol for 24 hours. Positive control was SMCs exposed to 20 uM tumor necrosis factor. The darkened nuclei indicate positive staining (Magnification ×200 original magnification). B, The five bars represent the mean percentage of apoptotic cells in each treatment groups, respectively. Error bars reflect the SEM. *P < .005 compared with resveratrol 10−6 M group. **P < .001 compared with resveratrol 10−6 M group, Kruskal-Wallis test. Resveratrol 10−6 M treatment was not significantly different than negative control. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Appendix Fig 1 Absence of effect of dimethyl sulfoxide (DMSO) compared with resveratrol (10−5 M) and control on smooth muscle cell (SMC) proliferation. SMC maintained in 10% fetal bovine serum were exposed to DMSO (10−4 M) or resveratrol (10−5 M) for up to 3 days. The x-axis represents the time course of the experiment, and y-axis represents the cell number/well measured with a hemocytometer. The control is not exposed to resveratrol or DMSO. *P < .005 compared with the control. There is no effect of DMSO on SMC proliferation. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Appendix Fig 2 Effect of resveratrol on smooth muscle cell (SMC) proliferation. SMC maintained in 10% fetal bovine serum were exposed to different concentrations of resveratrol for up to 7 days. Result of a typical experiment. The x-axis represents the time course of the experiment, and y-axis represents the cell number/well measured with a hemocytometer. The control is not exposed to resveratrol. *P < .005 compared with the control. +P < .01 compared with resveratrol 10−6 M. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Appendix Fig 3 Effect of resveratrol on smooth muscle cell (SMC) proliferation in 1% fetal bovine serum (FBS). SMCs maintained in 1% FBS were exposed to different concentrations of resveratrol for up to 3 days. A, Results for a typical experiment. The x-axis represents the time course of the experiment and y-axis represents the cell number/well measured with a hemocytometer. The control is not exposed to resveratrol. *P < .005 compared with the control. +P < .01 compared with resveratrol 10−6 M. B, This graph shows the mean ± SEM for three separate experiments, normalized as a percentage increase on day 1 and day 3. *P < .001 compared with control. There is a dose-dependent effect of resveratrol on SMC proliferation, even with minimal amounts of serum. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Appendix Fig 4 Representative flow cytometric histograms of smooth muscle cells (SMC) in absence of resveratrol (control) or in the presence of 10−6, 10−5, or 10−4 M resveratrol (right) for 24 hours. The y-axis represents the percentage of cells which are in the G0-1 (growth, first red curve), S (DNA synthesis, green curve), or G2-M (mitosis, second red curve), phase of the cell cycle. The table depicts the percentages according to the phase of the cell cycle. After 24 hours, there is a block between G0-G1 and S phase in the cell cycle with resveratrol 10−5 and 10−4 M. By day 5, SMCs attained confluence and the G0-G1 block persisted for the resveratrol 10−4 M and 10−5 M group. However, for the resveratrol 10−6 M and control groups, up to 90% of the cells were in G0-G1 phase. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Appendix Fig 5 Flow cytometry studies of smooth muscle cells (SMC) maintained in 1% or 10% fetal bovine serum (FBS) and exposed to resveratrol 10−5 M for up to 5 days. Representative flow cytometric histograms of SMC are shown and the table depicts the percentages according to the phase of the cell cycle. The y-axis represents the percentage of cells which are in the G0-1 (growth, first red curve), S (DNA synthesis, green curve), or G2-M (mitosis, second red curve), phase of the cell cycle. The x-axis represents the different experimental conditions. The profile of resveratrol 10−5 M is the same in SMC maintained with either 1% or 10% FBS. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Appendix Fig 6 Effect of resveratrol on smooth muscle cell (SMC) morphology. SMCs maintained in 10% fetal bovine serum (FBS) were exposed to different concentrations of resveratrol 10−6 to 10−4 M for up to 3 days. Representative light microscopic images are shown (×40 original magnification). There was no morphologic evidence of any gross damage to the cells, even at 72 hours, at any concentration. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions

Appendix Fig 7 Schematic of cell cycle control by cyclins. The cell cycle is regulated by different protein. Proliferating nuclear antigen (PCNA) is an universal activator of the cell cycle for many cells. The cell cycle is also regulated between each phase by different protein, the cyclin and cyclin-dependent kinase (CDK). They work together as a complex and are different at each step of the cell cycle. In the current report, we studied the cyclin E/CDK2 complex. Acting after the complexes cyclin D1/CDK4 and cyclin D3/CDK6, the complex cyclin E/CDK2 is regulating the transition between G0-G1 phase and S phase. Journal of Vascular Surgery 2005 42, 1190-1190.e14DOI: (10.1016/j.jvs.2005.08.014) Copyright © 2005 The Society for Vascular Surgery Terms and Conditions