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Insulin-like Growth Factors (IGF) and IGF-Binding Proteins Bound to Vitronectin Enhance Keratinocyte Protein Synthesis and Migration  Carolyn Hyde, Brett.

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Presentation on theme: "Insulin-like Growth Factors (IGF) and IGF-Binding Proteins Bound to Vitronectin Enhance Keratinocyte Protein Synthesis and Migration  Carolyn Hyde, Brett."— Presentation transcript:

1 Insulin-like Growth Factors (IGF) and IGF-Binding Proteins Bound to Vitronectin Enhance Keratinocyte Protein Synthesis and Migration  Carolyn Hyde, Brett Hollier, Alex Anderson, Damien Harkin, Zee Upton  Journal of Investigative Dermatology  Volume 122, Issue 5, Pages (May 2004) DOI: /j X x Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

2 Figure 1 Stimulation of protein synthesis by IGF in the presence and absence of VN in HaCAT human keratinocytes. The data, expressed as % stimulation above control (-VN, -IGF-I/II) over 48 h, were pooled from three replicate experiments in which each treatment was tested in triplicate. The effects obtained in wells exposed to IGF-II (A) and IGF-I (B) in the absence of VN (gray bars) are compared with the effects obtained when the wells were exposed to IGF-II (A) and IGF-I (B) in the presence of VN (black bars). In all instances, except for the two lowest concentrations of IGF-II tested, the effect was significantly different (*) (p<0.05) to that obtained when VN was absent. For all concentrations of IGF-I, except for the highest dose tested, the effect was not significantly different (*) (p<0.05) to that obtained when VN was absent. Journal of Investigative Dermatology  , DOI: ( /j X x) Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

3 Figure 2 Attachment of HaCAT human keratinocytes to culture wells exposed to IGF in the presence and absence of VN. The data, expressed as % attachment over 4 h compared with control wells (-VN, -IGF-I/II), were pooled from three replicate experiments in which each treatment was tested in triplicate. The effects obtained in wells exposed to IGF-II (A) and IGF-I (B) alone (gray bars) were compared with the attachment obtained when wells were exposed to IGF-II (A) and IGF-I (B) in the presence of VN (black bars). In all instances there was no significant difference (p<0.05) between cell attachment when the wells were exposed to IGF alone compared with the attachment obtained when VN was also present. Journal of Investigative Dermatology  , DOI: ( /j X x) Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

4 Figure 3 Stimulation of cell migration by IGF-II in the presence or absence of VN in HaCAT human keratinocytes. The data, expressed as % stimulation above control (-VN, -IGF-II) over 5 h, were pooled from three replicate experiments in which each treatment was tested in duplicate. The effects obtained in wells exposed to IGF-II alone (gray bars) are compared with the effects obtained when the wells were exposed to IGF-II in the presence of VN (black bars). For both concentrations tested there was a significant difference (p<0.05) between the presence or absence of vitronectin , and these effects were significantly different than the control (*) or VN alone (#). Journal of Investigative Dermatology  , DOI: ( /j X x) Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

5 Figure 4 Stimulation of Human Corneal Epithelial (HCE) protein synthesis, attachment and migration by IGF-II in the presence or absence of VN. The data, expressed as % above control wells (-VN, -IGF-II), were pooled from two replicate experiments in which each treatment was tested in triplicate. The effects obtained in wells exposed to IGF-II alone (gray bars) were compared with the effects obtained when wells were exposed to IGF-II in the presence of VN (black bars) in protein synthesis (A), attachment (B) and migration (C) assays. Significant difference (p<0.05) between the treatments and the control (*), VN alone (#) and IGF-II alone are indicated as above. Journal of Investigative Dermatology  , DOI: ( /j X x) Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

6 Figure 5 Stimulation of protein synthesis by IGF-I and IGFBP-5 in the presence and absence of VN in HaCAT human keratinocytes. The data, expressed as % stimulation above control (-VN, -IGF-I, -IGFBP-5) over 48 h, were pooled from five replicate experiments in which each treatment was tested in triplicate. The effects obtained in wells exposed to either IGF-I and/or IGFBP-5 in the absence of VN (gray bars) were compared with the effects obtained when wells were exposed to IGF-I and/or IGFBP-5 in the presence of VN (black bars). For all treatments tested there was a significant difference (p<0.05) between the control (*), VN alone (#) and the presence or absence of VN . Journal of Investigative Dermatology  , DOI: ( /j X x) Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

7 Figure 6 Attachment of HaCAT human keratinocytes to culture wells exposed to IGF-I and IGFBP-5 in the presence and absence of VN. The data, expressed as % attachment over 4 h compared with control wells (-VN, -IGF-I, -IGFBP-5), was pooled from two replicate experiments in which each treatment was tested in triplicate. The effects obtained in wells exposed to either IGF-I and/or IGFBP-5 and/or VN (black/gray bars) were compared with the attachment obtained in the control wells (*) and VN alone (#) (p<0.05). There was no significant difference, however, between IGF-I and/or IGFBP-5 exposed to VN, and the attachment obtained when VN was not present. Journal of Investigative Dermatology  , DOI: ( /j X x) Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

8 Figure 7 Stimulation of cell migration by IGF-I and IGFBP-5 in the presence and absence of VN in HaCAT human keratinocytes. The data, expressed as % stimulation above control (-VN, -IGF-I, -IGFBP-5) over 5 h, were pooled from two replicate experiments in which each treatment was tested in duplicate. The effects obtained in wells exposed to either IGF-I and/or IGFBP-5 in the absence of VN (gray bars) were compared with the effects obtained when wells were exposed to either IGF-I and/or IGFBP-5 in the presence of VN (black bars). For all treatments tested there was a significant difference (p<0.05) between the control (*), VN alone (#) and the presence or absence of vitronectin . Journal of Investigative Dermatology  , DOI: ( /j X x) Copyright © 2004 The Society for Investigative Dermatology, Inc Terms and Conditions

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