TY - JOUR
T1 - Dynamic microfluidic control of supramolecular peptide self-assembly
AU - Arnon, Zohar A.
AU - Vitalis, Andreas
AU - Levin, Aviad
AU - Michaels, Thomas C.T.
AU - Caflisch, Amedeo
AU - Knowles, Tuomas P.J.
AU - Adler-Abramovich, Lihi
AU - Gazit, Ehud
N1 - Publisher Copyright: © 2016 The Author(s).
PY - 2016/10/25
Y1 - 2016/10/25
N2 - The dynamic nature of supramolecular polymers has a key role in their organization. Yet, the manipulation of their dimensions and polarity remains a challenge. Here, the minimalistic diphenylalanine building block was applied to demonstrate control of nano-assemblies growth and shrinkage using microfluidics. To fine-tune differential local environments, peptide nanotubes were confined by micron-scale pillars and subjected to monomer flows of various saturation levels to control assembly and disassembly. The small-volume device allows the rapid adjustment of conditions within the system. A simplified kinetic model was applied to calculate parameters of the growth mechanism. Direct real-time microscopy analysis revealed that different peptide derivatives show unidirectional or bidirectional axial dimension variation. Atomistic simulations show that unidirectional growth is dictated by the differences in the axial ends, as observed in the crystalline order of symmetry. This work lays foundations for the rational control of nano-materials dimensions for applications in biomedicine and material science.
AB - The dynamic nature of supramolecular polymers has a key role in their organization. Yet, the manipulation of their dimensions and polarity remains a challenge. Here, the minimalistic diphenylalanine building block was applied to demonstrate control of nano-assemblies growth and shrinkage using microfluidics. To fine-tune differential local environments, peptide nanotubes were confined by micron-scale pillars and subjected to monomer flows of various saturation levels to control assembly and disassembly. The small-volume device allows the rapid adjustment of conditions within the system. A simplified kinetic model was applied to calculate parameters of the growth mechanism. Direct real-time microscopy analysis revealed that different peptide derivatives show unidirectional or bidirectional axial dimension variation. Atomistic simulations show that unidirectional growth is dictated by the differences in the axial ends, as observed in the crystalline order of symmetry. This work lays foundations for the rational control of nano-materials dimensions for applications in biomedicine and material science.
UR - http://www.scopus.com/inward/record.url?scp=84992663911&partnerID=8YFLogxK
U2 - https://doi.org/10.1038/ncomms13190
DO - https://doi.org/10.1038/ncomms13190
M3 - مقالة
C2 - 27779182
SN - 2041-1723
VL - 7
JO - Nature Communications
JF - Nature Communications
M1 - 13190
ER -