Functional Magnetic Microdroplets for Antibody Extraction

Hedar H. Al-Terke, Mika Latikka, Jaakko V. I. Timonen, Ladislau Vekas, Arja Paananen, Jussi Joensuu, Robin H. A. Ras*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

1 Sitaatiot (Scopus)
19 Lataukset (Pure)

Abstrakti

Antibodies play an essential role in modern medicine for diagnostic and therapeutic applications. Even though the production of antibodies is the fastest growing pharmaceutical industry area, the cost of antibodies remains high, which limits access to antibody-based medicine both in developing and developed countries. The bottleneck and major cost factor in the production is purification of the antibody. Here, a proof-of-concept is presented for antibody extraction using ferrofluid microdroplets. An external magnetic field splits oil-based ferrofluid droplets into an array of daughter microdroplets, which serve as a magnetically tunable, hydrophobic, liquid substrate with a relatively large surface area. A fusion protein (HFBI-Protein A), added to the solution surrounding the magnetic droplets, adsorbs strongly at the liquid-liquid interface by the hydrophobin HFBI moiety, creating a bifunctional monolayer that can catch antibody molecules. After adsorption at the liquid-liquid interface, these antibody molecules can be released by decreasing the pH of the solution. The antibody extraction process is investigated using confocal microscopy and gel electrophoresis. In addition, the effect of HFBI on the field-induced ferrofluid droplet splitting is examined. This study provides a proof of concept for utilizing liquid-liquid instead of a solid-liquid system in antibody handling.

AlkuperäiskieliEnglanti
Artikkeli2101317
Sivumäärä8
JulkaisuAdvanced Materials Interfaces
Vuosikerta9
Numero1
Varhainen verkossa julkaisun päivämäärä6 jouluk. 2021
DOI - pysyväislinkit
TilaJulkaistu - 5 tammik. 2022
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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