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Batsi Y, Antonopoulou G, Fotopoulou T, Koumaki K, Kritsi E, Potamitis C, Goulielmaki M, Skarmalioraki S, Papalouka C, Poulou-Sidiropoulou E, Kosmidou V, Douna S, Vidali MS, Gkotsi EF, Chatziioannou A, Souliotis VL, Pletsa V, Papadodima O, Zoumpourlis V, Georgiadis P, Zervou M, Pintzas A, Kostas ID. Design and Synthesis of Novel 2-Acetamido, 6-Carboxamide Substituted Benzothiazoles as Potential BRAFV600E Inhibitors - In vitro Evaluation of their Antiproliferative Activity. ChemMedChem 2023; 18:e202300322. [PMID: 37792577 DOI: 10.1002/cmdc.202300322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/06/2023]
Abstract
The oncogenic BRAFV600E kinase leads to abnormal activation of the MAPK signaling pathway and thus, uncontrolled cellular proliferation and cancer development. Based on our previous virtual screening studies which issued 2-acetamido-1,3 benzothiazole-6-carboxamide scaffold as active pharmacophore displaying selectivity against the mutated BRAF, eleven new substituted benzothiazole derivatives were designed and synthesized by coupling of 2-acetamidobenzo[d]thiazole-6-carboxylic acid with the appropriate amines in an effort to provide even more efficient inhibitors and tackle drug resistance often developed during cancer treatment. All derived compounds bore the benzothiazole scaffold substituted at position-2 by an acetamido moiety and at position-6 by a carboxamide functionality, the NH moiety of which was further linked through an alkylene linker to a sulfonamido (or amino) aryl (or alkyl) functionality or a phenylene linker to a sulfonamido aromatic (or non-aromatic) terminal pharmacophore in the order -C6 H4 -NHSO2 -R or reversely -C6 H4 -SO2 N(H)-R. These analogs were subsequently biologically evaluated as potential BRAFV600E inhibitors and antiproliferative agents in several colorectal cancer and melanoma cell lines. In all assays applied, one analog, namely 2-acetamido-N-[3-(pyridin-2-ylamino)propyl]benzo[d]thiazole-6-carboxamide (22), provided promising results in view of its use in drug development.
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Affiliation(s)
- Yakinthi Batsi
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Georgia Antonopoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Theano Fotopoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Kassandra Koumaki
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Eftichia Kritsi
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Constantinos Potamitis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Maria Goulielmaki
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Salomi Skarmalioraki
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Chara Papalouka
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Eleni Poulou-Sidiropoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vivian Kosmidou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Stavroula Douna
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Maria-Sofia Vidali
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Eleni-Fani Gkotsi
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Aristotelis Chatziioannou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vassilis L Souliotis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vasiliki Pletsa
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Olga Papadodima
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Vassilis Zoumpourlis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Panagiotis Georgiadis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Maria Zervou
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Alexander Pintzas
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Ioannis D Kostas
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
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Meligova AK, Siakouli D, Stasinopoulou S, Xenopoulou DS, Zoumpouli M, Ganou V, Gkotsi EF, Chatziioannou A, Papadodima O, Pilalis E, Alexis MN, Mitsiou DJ. ERβ1 Sensitizes and ERβ2 Desensitizes ERα-Positive Breast Cancer Cells to the Inhibitory Effects of Tamoxifen, Fulvestrant and Their Combination with All-Trans Retinoic Acid. Int J Mol Sci 2023; 24:ijms24043747. [PMID: 36835157 PMCID: PMC9959521 DOI: 10.3390/ijms24043747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
Adjuvant endocrine therapy (AET) is the treatment of choice for early-stage estrogen receptor alpha (ERα)-positive breast cancer (BC). However, almost 40% of tamoxifen-treated cases display no response or a partial response to AET, thus increasing the need for new treatment options and strong predictors of the therapeutic response of patients at high risk of relapse. In addition to ERα, BC research has focused on ERβ1 and ERβ2 (isoforms of ERβ), the second ER isotype. At present, the impact of ERβ isoforms on ERα-positive BC prognosis and treatment remains elusive. In the present study, we established clones of MCF7 cells constitutively expressing human ERβ1 or ERβ2 and investigated their role in the response of MCF7 cells to antiestrogens [4-hydroxytamoxifen (OHΤ) and fulvestrant (ICI182,780)] and retinoids [all-trans retinoic acid (ATRA)]. We show that, compared to MCF7 cells, MCF7-ERβ1 and MCF7-ERβ2 cells were sensitized and desensitized, respectively, to the antiproliferative effect of the antiestrogens, ATRA and their combination and to the cytocidal effect of the combination of OHT and ATRA. Analysis of the global transcriptional changes upon OHT-ATRA combinatorial treatment revealed uniquely regulated genes associated with anticancer effects in MCF7-ERβ1 cells and cancer-promoting effects in MCF7-ERβ2 cells. Our data are favorable to ERβ1 being a marker of responsiveness and ERβ2 being a marker of resistance of MCF7 cells to antiestrogens alone and in combination with ATRA.
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Affiliation(s)
- Aggeliki K. Meligova
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Dimitra Siakouli
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Sotiria Stasinopoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Despoina S. Xenopoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Maria Zoumpouli
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Vassiliki Ganou
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Eleni-Fani Gkotsi
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | - Aristotelis Chatziioannou
- Center of Systems Biology, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Olga Papadodima
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
| | | | - Michael N. Alexis
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
- Correspondence: (M.N.A.); (D.J.M.)
| | - Dimitra J. Mitsiou
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece
- Correspondence: (M.N.A.); (D.J.M.)
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