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| http://dx.doi.org/10.1371/journal.pbio.1001922 | DOI Listing |
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Post-spin Stretch Improves Mechanical Properties, Reduces Necking, and Reverts Effects of Aging in Biomimetic Artificial Spider Silk Fibers.
ACS Appl Polym Mater
December 2024
Department of Animal Biosciences, Swedish University of Agricultural Sciences, Box 7011, Uppsala 750 07, Sweden.
Recent biotechnological advancements in protein production and development of biomimetic spinning procedures make artificial spider silk a promising alternative to petroleum-based fibers. To enhance the competitiveness of artificial silk in terms of mechanical properties, refining the spinning techniques is imperative. One potential strategy involves the integration of post-spin stretching, known to improve fiber strength and stiffness while potentially offering additional advantages.
View Article and Find Full Text PDFHybrid biological macromolecules spider-silk fibroin optical patches for efficient wound healing.
Int J Biol Macromol
November 2024
School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, China. Electronic address:
Efforts toward developing wound dressings that effectively monitor healing have become at the forefront of the field of wound healing. However, monofunctionality, biotoxicity, and passive therapy constrain wound patches. Herein, a hypoallergenic wound patch integrating moisture monitoring, motion sensing and electrical stimulation for wound healing is presented.
View Article and Find Full Text PDFOverexpressed Artificial Spidroin Based Microneedle Spinneret for 3D Air Spinning of Hybrid Spider Silk.
ACS Nano
September 2024
School of Pharmaceutical Sciences, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China.
Efforts have been devoted to developing strategies for converting spider silk proteins (spidroins) into functional silk materials. However, studies mimicking the exact natural spinning process of spiders encounter arduous challenges. In this paper, consistent with the natural spinning process of spiders, we report a high-efficient spinning strategy that enables the mass preparation of multifunctional artificial spider silk at different scales.
View Article and Find Full Text PDFDimerization and liquid-liquid phase separation of the nonrepetitive domains of pyriform spidroin 1 controls the pyriform silk formation.
Int J Biol Macromol
October 2024
Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang 317099, China. Electronic address:
Spiders spin high performance silks with diverse mechanical properties for specific biological functions. Of these spider silk types, pyriform silk stands out as a unique combination of wet glue and dry fibers. Investigation of self-assembly process of spider silk proteins is necessary for elucidating the silk formation mechanism.
View Article and Find Full Text PDFChanges in the material properties of spider glue droplet proteins accompanied shifts in prey capture biomechanics as cobweb spiders diverged from their orb weaving ancestors.
Acta Biomater
July 2024
Division of Invertebrate Zoology and Institute for Comparative Genomics, American Museum of Natural History, New York, NY, USA.
Although descended from orb weavers, spiders in the family Theridiidae spin cobwebs whose sticky prey capture gumfoot lines extend from a silk tangle to a surface below. When a crawling insect contacts glue droplets at the bottom of a gumfoot line, the line's weak pyriform anchor releases, causing the taut line to contract, pulling the insect from the surface and making its struggles to escape ineffective. To determine if this change in prey capture biomechanics was accompanied by a change in the material properties of theridiid glue, we characterized the elastic modulus and toughness of the glue droplet proteins of four theridiid species at 20-90 % relative humidity and compared their properties with those of 13 orb weaving species in the families Tetragnathidae and Araneidae.
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