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Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology
Published on: March 12, 2015
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Ferrocene-Biotin Conjugates: Synthesis, Structure, Cytotoxic Activity and Interaction with Avidin
Andrzej Błauż1, Błażej Rychlik1, Anna Makal2
1Cytometry Lab, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Łódź, 141/143 Pomorska St., 90-236, Łódź, Poland.
Chempluschem
|January 23, 2020
Summary
New biotin-ferrocene conjugates show potent anticancer activity by targeting cancer cells. Their efficacy is linked to cellular uptake, not just transporter levels, suggesting novel therapeutic potential.
Area of Science:
- Medicinal Chemistry
- Organic Synthesis
- Cancer Biology
Background:
- Biotin (vitamin H) is crucial for cellular metabolism and is actively transported into cells.
- Ferrocene, an organometallic compound, possesses unique electrochemical properties and has been explored for therapeutic applications.
- Targeting vitamin transporters like the sodium-dependent multivitamin transporter (SMVT) offers a strategy for selective cancer cell drug delivery.
Purpose of the Study:
- To synthesize novel biotin-ferrocene conjugates.
- To evaluate their antiproliferative activity against cancer cells.
- To investigate the role of SMVT in their mechanism of action.
Main Methods:
- Friedel-Crafts acylation of ferrocene with biotin derivatives.
- Diastereoselective reduction of ferrocenyl ketones to alcohols.
- Stereoselective conversion to azido and amino derivatives.
- X-ray crystallography for structural confirmation.
- In vitro cytotoxicity assays against cancer cell lines with varying SMVT expression.
- Avidin binding affinity tests.
Main Results:
- Successful synthesis of various biotin-ferrocene conjugates, including alcohols, azides, amines, and alkenes.
- Synthesized compounds demonstrated high affinity for avidin.
- Compounds exhibited significant cytotoxicity against cancer cells, particularly in the absence of free biotin.
- Cytotoxicity was observed across cell lines with different SMVT expression levels, indicating a complex uptake mechanism.
- Antiproliferative activity was reduced in the presence of free biotin, suggesting competitive uptake.
Conclusions:
- Biotin-ferrocene conjugates are effectively synthesized and retain biological activity.
- These conjugates show promise as anticancer agents, potentially exploiting biotin uptake pathways.
- The mechanism of action involves cellular uptake, but a direct correlation with SMVT levels was not established.
- Further research is warranted to optimize these compounds for cancer therapy.
Keywords:
bioorganometallic chemistrybiotincytotoxicityferrocenesodium-dependent multivitamin transporter
