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The surface stress of biomedical silicones is a stimulant of cellular response.

ABSTRACT: Silicones are commonly used for lubrication of syringes, encapsulation of medical devices, and fabrication of surgical implants. While silicones are generally viewed as relatively inert to the cellular milieu, they can mediate a variety of inflammatory responses and other deleterious effects, but the mechanisms underlying the bioactivity of silicones remain unresolved. Here, we report that silicone liquids and gels have high surface stresses that can strongly resist deformation at cellular length scales. Biomedical silicones, including syringe lubricants and fillings from FDA-approved breast implants, readily adsorb matrix proteins and activate canonical rigidity sensing pathways through their surface stresses. In 3D culture models, liquid silicone droplets support robust cellular adhesion and the formation of multinucleated monocyte-derived cell masses that recapitulate phenotypic aspects of granuloma formation in the foreign body response. Together, our findings implicate surface stress as a cellular stimulant that should be considered in application of silicones for biomedical purposes.

SUBMITTER: Cheng Z

PROVIDER: S-EPMC7148089 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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The surface stress of biomedical silicones is a stimulant of cellular response.

Cheng Zhu Z Shurer Carolyn R CR Schmidt Samuel S Gupta Vivek K VK Chuang Grace G Su Jin J Watkins Amanda R AR Shetty Abhishek A Spector Jason A JA Hui Chung-Yuen CY Reesink Heidi L HL Paszek Matthew J MJ

Science advances 20200410 15

Silicones are commonly used for lubrication of syringes, encapsulation of medical devices, and fabrication of surgical implants. While silicones are generally viewed as relatively inert to the cellular milieu, they can mediate a variety of inflammatory responses and other deleterious effects, but the mechanisms underlying the bioactivity of silicones remain unresolved. Here, we report that silicone liquids and gels have high surface stresses that can strongly resist deformation at cellular lengt ...[more]

PMID: 32300645

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The surface stress of biomedical silicones is a stimulant of cellular response.

Publications

The surface stress of biomedical silicones is a stimulant of cellular response.

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