Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (6): 1311.doi: 10.7503/cjcu20170742

• Polymer Chemistry • Previous Articles     Next Articles

Preparation of Functional Patterned Protein Arrays via the Combination of Inverse Emulsion and Breath Figure Method

DING Lingyun, JU Yuanlai, SUN Wei*(), CHEN Ji   

  1. Department of Materials Science and Engineering, Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
  • Received:2017-11-17 Online:2018-06-10 Published:2018-04-12
  • Contact: SUN Wei E-mail:sunwei@nbu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21104036), the Program for Zhejiang Leading S&T Innovation Team, China(No.2011R50001-04), the Natural Science Foundation of Ningbo, China(No.2015A610057) and the K. C. Wong Magna Fund in Ningbo University, China.

Abstract:

We established a modified breath figure(BF) method using inverse emulsion as casting solution to achieve directed assembly of water-soluble components with the BF arrays. It is a one-step technique with great ease of fabricating regular arrays of biomolecules via self-assembly. To be specific, we constructed a hybrid structured film made from polylactic acid(PLA)/chitosan(CS)/bovine serum albumin(BSA) mixing emulsion. CS particles were synthesized to serve as stabilizers for the inverse emulsion of water-in-oil type and BSA was selected as model protein to be carried within the emulsion water droplets. It has been proved that the CS particles could not only effectively contribute to stabilize the inverse emulsion, but also be able to improve the regularity of the obtained BF arrays. Furthermore, the influencing factors of BSA concentration and water-to-oil ratio were carefully tuned to study their effect on the obtained surface morphology. The results showed that the increase of the BSA concentration and the water-to-oil ratio would both compromise the regular arrangement of the surface pore arrays. But if the concentration and ratio were both increased to a high level, the regular BF arrays would reappear. We tagged the BSA with fluorescent probe to track the assembled morphology of the BSA within the porous polymer matrix. And 3D ring-like arrays of the fluorescent protein were observed under confocal microscope, indicating the success of obtaining the protein arrays via a one-step technique.

Key words: Chitosan particle, Inverse emulsion, Breath figure method, Protein array, Honeycomb-structured porous surface

CLC Number: 

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