Universität zu Köln

Goehringer, Nils, Biersack, Bernhard ORCID: 0000-0001-7305-346X, Peng, Yayi, Schobert, Rainer, Herling, Marco, Ma, Andi, Nitzsche, Bianca and Hoepfner, Michael (2021). Anticancer Activity and Mechanisms of Action of New Chimeric EGFR/HDAC-Inhibitors. Int. J. Mol. Sci., 22 (16). BASEL: MDPI. ISSN 1422-0067

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Abstract

New chimeric inhibitors targeting the epidermal growth factor (EGFR) and histone deacetylases (HDACs) were synthesized and tested for antineoplastic efficiency in solid cancer (prostate and hepatocellular carcinoma) and leukemia/lymphoma cell models. The most promising compounds, 3BrQuin-SAHA and 3ClQuin-SAHA, showed strong inhibition of tumor cell growth at one-digit micromolar concentrations with IC50 values similar to or lower than those of clinically established reference compounds SAHA and gefitinib. Target-specific EGFR and HDAC inhibition was demonstrated in cell-free kinase assays and Western blot analyses, while unspecific cytotoxic effects could not be observed in LDH release measurements. Proapoptotic formation of reactive oxygen species and caspase-3 activity induction in PCa and HCC cell lines DU145 and Hep-G2 seem to be further aspects of the modes of action. Antiangiogenic potency was recognized after applying the chimeric inhibitors on strongly vascularized chorioallantoic membranes of fertilized chicken eggs (CAM assay). The novel combination of two drug pharmacophores against the EGFR and HDACs in one single molecule was shown to have pronounced antineoplastic effects on tumor growth in both solid and leukemia/lymphoma cell models. The promising results merit further investigations to further decipher the underlying modes of action of the novel chimeric inhibitors and their suitability for new clinical approaches in tumor treatment.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Goehringer, Nils UNSPECIFIED UNSPECIFIED UNSPECIFIED Biersack, Bernhard UNSPECIFIED orcid.org/0000-0001-7305-346X UNSPECIFIED Peng, Yayi UNSPECIFIED UNSPECIFIED UNSPECIFIED Schobert, Rainer UNSPECIFIED UNSPECIFIED UNSPECIFIED Herling, Marco UNSPECIFIED UNSPECIFIED UNSPECIFIED Ma, Andi UNSPECIFIED UNSPECIFIED UNSPECIFIED Nitzsche, Bianca UNSPECIFIED UNSPECIFIED UNSPECIFIED Hoepfner, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-588601
DOI:	10.3390/ijms22168432
Journal or Publication Title:	Int. J. Mol. Sci.
Volume:	22
Number:	16
Date:	2021
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	1422-0067
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SUBEROYLANILIDE HYDROXAMIC ACID; HISTONE DEACETYLASE; PROSTATE-CANCER; POLY(ADP-RIBOSE) POLYMERASE; HDAC INHIBITOR; FDA APPROVAL; IN-VITRO; EXPRESSION; APOPTOSIS; VORINOSTAT Multiple languages Biochemistry & Molecular Biology; Chemistry, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58860