title: Altering adsorbed proteins or cellular gene expression in bone-metastatic cancer cells affects PTHrP and Gli2 without altering cell growth.
abstract: The contents of this data in brief are related to the article titled "Matrix Rigidity Regulates the Transition of Tumor Cells to a Bone-Destructive Phenotype through Integrin β3 and TGF-β Receptor Type II". In this DIB we will present our supplemental data investigating Integrin expression, attachment of cells to various adhesion molecules, and changes in gene expression in multiple cancer cell lines. Since the interactions of Integrins with adsorbed matrix proteins are thought to affect the ability of cancer cells to interact with their underlying substrates, we examined the expression of Integrin β1, β3, and β5 in response to matrix rigidity. We found that only Iβ3 increased with increasing substrate modulus. While it was shown that fibronectin greatly affects the expression of tumor-produced factors associated with bone destruction (parathyroid hormone-related protein, PTHrP, and Gli2), poly-l-lysine, vitronectin and type I collagen were also analyzed as potential matrix proteins. Each of the proteins was independently adsorbed on both rigid and compliant polyurethane films which were subsequently used to culture cancer cells. Poly-l-lysine, vitronectin and type I collagen all had negligible effects on PTHrP or Gli2 expression, but fibronectin was shown to have a dose dependent effect. Finally, altering the expression of Iβ3 demonstrated that it is required for tumor cells to respond to the rigidity of the matrix, but does not affect other cell growth or viability. Together these data support the data presented in our manuscript to show that the rigidity of bone drives Integrinβ3/TGF-β crosstalk, leading to increased expression of Gli2 and PTHrP.
authors: Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA.
authors: Jonathan M
authors: JM
authors: Page
authors: Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN 37212, USA ; Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA ; Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
authors: Alyssa R
authors: AR
authors: Merkel
authors: Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA.
authors: Nazanin S
authors: NS
authors: Ruppender
authors: Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA.
authors: Ruijing
authors: R
authors: Guo
authors: Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA ; Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
authors: Ushashi C
authors: UC
authors: Dadwal
authors: Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN 37212, USA ; Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA ; Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
authors: Shellese
authors: S
authors: Cannonier
authors: Agilent Technologies, Chandler, AZ 85226, USA.
authors: Sandip
authors: S
authors: Basu
authors: Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA ; Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA ; Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA.
authors: Scott A
authors: SA
authors: Guelcher
authors: Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN 37212, USA ; Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA ; Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA ; Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
authors: Julie A
authors: JA
authors: Sterling