Why is Spiber unique?

Spiber™ is a biomaterial made of recombinant spider silk protein with a unique set of properties. It combines silk’s inherent material properties, such as high tensile strength and high elasticity, with biomaterial control and technological flexibility stemming from recombinant production. 

Spiber™ – for a physical challenge: 

Due to its natural properties, Spiber™ is elastic yet mechanically strong, chemically stable yet biodegradable

  • As strong as mammalian tendons with a tensile strength of 0.1-0.2 GPa
  • Stable up to +267°C
  • Chemically stable in buffers and solvents such as 6M Gdn-HCl, 1M NaOH and methanol 

Spiber™ – for optimal function:

Spiber™ has a variety of formats and functional properties that fit many applications

  • Four Spiber™ formats: fiber, film, foam and mesh
  • Several biochemical signaling molecules, e.g. cell adhesion sites and growth factors, have been connected to Spiber™ through genetic modification. Attachment of more complex molecules is under development

Spiber™ – for in-vivo use: 

Spiber™ integrates in biological systems with good biocompatibility

  • Attached cells grow well and function normally
  • By-products from recombinant production, e.g. endotoxins, are efficiently removed
  • Subcutaneous implantation in rats shows good biocompatibility