Integrin α5β1 expression is required for inhibition of keratinocyte migration by ganglioside GT1b

Ching Ching Sung; Edel A. O'Toole; Brian J. Lannutti; Janelle Hunt; Maurice O'Gorman; David T. Woodley; Amy S. Paller

doi:10.1006/excr.1997.3897

Integrin α5β1 expression is required for inhibition of keratinocyte migration by ganglioside GT1b

Ching Ching Sung, Edel A. O'Toole, Brian J. Lannutti, Janelle Hunt, Maurice O'Gorman, David T. Woodley, Amy S. Paller^*

^*Corresponding author for this work

Dermatology

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Polysialoganglioside GT1b, a keratinocyte membrane glycosphingolipid, inhibits normal keratinocyte adhesion and migration on a fibronectin matrix. The specificity of the inhibition for cells plated on a fibronectin matrix and competition of GT1b inhibition with peptide RGDS suggest that GT1b abrogates the α₅β₁/fibronectin interaction. We examined the effects of GT1b on the adhesion and migration of keratinocyte-derived cell lines and correlated GT1b responsiveness and α₅β₁ integrin expression. GT1b (5 nM) significantly inhibited migration of normal human keratinocytes, immortalized keratinocytes, and squamous cell carcinoma SCC12F2 cells on fibronectin, but not on collagen I. Concentrations as high as 5 μM had no effect on SCC13 or HaCaT cells. Likewise, GT1b inhibited fibronectin-dependent cell adhesion of normal human keratinocytes, immortalized keratinocytes, and SCC12F2 cells, but had no effect on SCC13 or HaCaT cells. Flow cytometric and Western immunoblot analysis of integrin expression showed significantly decreased α₅ and β₁ integrin expression in SCC13 and HaCaT cells compared to normal keratinocytes, immortalized keratinocytes, and SCC12F2 cells. Incubation with TGF-β1 increased α₅β₁ integrin expression and induced responsiveness to GT1b in HaCaT cells. These data imply that GT1b 'response' requires sufficient expression of α₅β₁ and further suggest that the mechanism of the inhibitory effect of GT1b involves GT1b/α₅β₁ interaction.

Original language	English (US)
Pages (from-to)	311-319
Number of pages	9
Journal	Experimental Cell Research
Volume	239
Issue number	2
DOIs	https://doi.org/10.1006/excr.1997.3897
State	Published - Mar 15 1998

Funding

We acknowledge NIH AR 01811 (ASP), a BRSG grant from CMIER (ASP), NIH AR 41045 (DTW), the Dermatology Foundation Dermik Research Fellowship (CS), and the Howard Hughes Medical Institute Postdoctoral Fellowship for Physicians (EOT) for ®nancial support. Our thanks to Dr. Eric Bremer (Chicago, IL) and Dr. Jonathan Gar- lick (Stony Brook, NY) for their careful reviews of the manuscript and to Dr. Chong Wang for assisting with photography.

ASJC Scopus subject areas

Cell Biology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1006/excr.1997.3897

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title = "Integrin α5β1 expression is required for inhibition of keratinocyte migration by ganglioside GT1b",

abstract = "Polysialoganglioside GT1b, a keratinocyte membrane glycosphingolipid, inhibits normal keratinocyte adhesion and migration on a fibronectin matrix. The specificity of the inhibition for cells plated on a fibronectin matrix and competition of GT1b inhibition with peptide RGDS suggest that GT1b abrogates the α5β1/fibronectin interaction. We examined the effects of GT1b on the adhesion and migration of keratinocyte-derived cell lines and correlated GT1b responsiveness and α5β1 integrin expression. GT1b (5 nM) significantly inhibited migration of normal human keratinocytes, immortalized keratinocytes, and squamous cell carcinoma SCC12F2 cells on fibronectin, but not on collagen I. Concentrations as high as 5 μM had no effect on SCC13 or HaCaT cells. Likewise, GT1b inhibited fibronectin-dependent cell adhesion of normal human keratinocytes, immortalized keratinocytes, and SCC12F2 cells, but had no effect on SCC13 or HaCaT cells. Flow cytometric and Western immunoblot analysis of integrin expression showed significantly decreased α5 and β1 integrin expression in SCC13 and HaCaT cells compared to normal keratinocytes, immortalized keratinocytes, and SCC12F2 cells. Incubation with TGF-β1 increased α5β1 integrin expression and induced responsiveness to GT1b in HaCaT cells. These data imply that GT1b 'response' requires sufficient expression of α5β1 and further suggest that the mechanism of the inhibitory effect of GT1b involves GT1b/α5β1 interaction.",

author = "Sung, {Ching Ching} and O'Toole, {Edel A.} and Lannutti, {Brian J.} and Janelle Hunt and Maurice O'Gorman and Woodley, {David T.} and Paller, {Amy S.}",

note = "Funding Information: We acknowledge NIH AR 01811 (ASP), a BRSG grant from CMIER (ASP), NIH AR 41045 (DTW), the Dermatology Foundation Dermik Research Fellowship (CS), and the Howard Hughes Medical Institute Postdoctoral Fellowship for Physicians (EOT) for {\textregistered}nancial support. Our thanks to Dr. Eric Bremer (Chicago, IL) and Dr. Jonathan Gar- lick (Stony Brook, NY) for their careful reviews of the manuscript and to Dr. Chong Wang for assisting with photography.",

year = "1998",

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doi = "10.1006/excr.1997.3897",

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volume = "239",

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T1 - Integrin α5β1 expression is required for inhibition of keratinocyte migration by ganglioside GT1b

AU - Sung, Ching Ching

AU - O'Toole, Edel A.

AU - Lannutti, Brian J.

AU - Hunt, Janelle

AU - O'Gorman, Maurice

AU - Woodley, David T.

AU - Paller, Amy S.

N1 - Funding Information: We acknowledge NIH AR 01811 (ASP), a BRSG grant from CMIER (ASP), NIH AR 41045 (DTW), the Dermatology Foundation Dermik Research Fellowship (CS), and the Howard Hughes Medical Institute Postdoctoral Fellowship for Physicians (EOT) for ®nancial support. Our thanks to Dr. Eric Bremer (Chicago, IL) and Dr. Jonathan Gar- lick (Stony Brook, NY) for their careful reviews of the manuscript and to Dr. Chong Wang for assisting with photography.

PY - 1998/3/15

Y1 - 1998/3/15

N2 - Polysialoganglioside GT1b, a keratinocyte membrane glycosphingolipid, inhibits normal keratinocyte adhesion and migration on a fibronectin matrix. The specificity of the inhibition for cells plated on a fibronectin matrix and competition of GT1b inhibition with peptide RGDS suggest that GT1b abrogates the α5β1/fibronectin interaction. We examined the effects of GT1b on the adhesion and migration of keratinocyte-derived cell lines and correlated GT1b responsiveness and α5β1 integrin expression. GT1b (5 nM) significantly inhibited migration of normal human keratinocytes, immortalized keratinocytes, and squamous cell carcinoma SCC12F2 cells on fibronectin, but not on collagen I. Concentrations as high as 5 μM had no effect on SCC13 or HaCaT cells. Likewise, GT1b inhibited fibronectin-dependent cell adhesion of normal human keratinocytes, immortalized keratinocytes, and SCC12F2 cells, but had no effect on SCC13 or HaCaT cells. Flow cytometric and Western immunoblot analysis of integrin expression showed significantly decreased α5 and β1 integrin expression in SCC13 and HaCaT cells compared to normal keratinocytes, immortalized keratinocytes, and SCC12F2 cells. Incubation with TGF-β1 increased α5β1 integrin expression and induced responsiveness to GT1b in HaCaT cells. These data imply that GT1b 'response' requires sufficient expression of α5β1 and further suggest that the mechanism of the inhibitory effect of GT1b involves GT1b/α5β1 interaction.

AB - Polysialoganglioside GT1b, a keratinocyte membrane glycosphingolipid, inhibits normal keratinocyte adhesion and migration on a fibronectin matrix. The specificity of the inhibition for cells plated on a fibronectin matrix and competition of GT1b inhibition with peptide RGDS suggest that GT1b abrogates the α5β1/fibronectin interaction. We examined the effects of GT1b on the adhesion and migration of keratinocyte-derived cell lines and correlated GT1b responsiveness and α5β1 integrin expression. GT1b (5 nM) significantly inhibited migration of normal human keratinocytes, immortalized keratinocytes, and squamous cell carcinoma SCC12F2 cells on fibronectin, but not on collagen I. Concentrations as high as 5 μM had no effect on SCC13 or HaCaT cells. Likewise, GT1b inhibited fibronectin-dependent cell adhesion of normal human keratinocytes, immortalized keratinocytes, and SCC12F2 cells, but had no effect on SCC13 or HaCaT cells. Flow cytometric and Western immunoblot analysis of integrin expression showed significantly decreased α5 and β1 integrin expression in SCC13 and HaCaT cells compared to normal keratinocytes, immortalized keratinocytes, and SCC12F2 cells. Incubation with TGF-β1 increased α5β1 integrin expression and induced responsiveness to GT1b in HaCaT cells. These data imply that GT1b 'response' requires sufficient expression of α5β1 and further suggest that the mechanism of the inhibitory effect of GT1b involves GT1b/α5β1 interaction.

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Integrin α5β1 expression is required for inhibition of keratinocyte migration by ganglioside GT1b

Abstract

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