ArticleMolecular biology reports2020
DARPin Ec1-LMWP protein scaffold in targeted delivery of siRNA molecules through EpCAM cancer stem cell marker.
Article in Molecular biology reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 7 citations in OpenAlex.
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- Recent Advances in the Molecular Design and Applications of Multispecific Biotherapeutics.Antibodies (Basel, Switzerland) · 2021Review
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study is to investigate the binding ability of Designed Ankyrin Repeat Proteins type Ec1that was fused to Low Molecular Weight Protamine (DARPin Ec1-LMWP) protein scaffold to the Epithelial Cell Adhesion Molecule (EpCAM) Cancer Stem Cell (CSC) marker and its efficiency in targeted delivery of small interfering RNA (siRNA) molecules into the studied cells. Gene fragment encoding the DARPIn Ec1-LMWP fusion protein was subcloned into pET28a expression vector following molecular docking studies performed to examine the affinity of the fusion protein towards EpCAM marker. The binding of the siRNA to the expressed fusion protein was tested through native PAGE. The toxicity of the fusion protein was tested by MTT assay. Attachment of the complex to the EpCAM marker was investigated by flow cytometry and delivery of siRNA into the cells was assessed by fluorescence microscopy. The expressed 21.6 kDa DARPin Ec1-LMWP fusion protein was purified and showed no cytotoxicity on tested cells. Arginine rich LMWP was efficiently bounded to the negatively charged siRNA molecule. Successful attachment of the fusion protein:siRNA complex to the EpCAM marker and its internalization into MCF-7 breast cancer cell line were confirmed. Here for the first time the recombinant DARPin Ec1-LMWP protein scaffold was designed and tested for targeting EpCAM surface marker and successful internalization of the siRNA into MCF-7 cells.
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