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Tsimpaki T, Anastasova R, Liu H, Seitz B, Bechrakis NE, Berchner-Pfannschmidt U, Kraemer MM, Fiorentzis M. Calcium Electroporation versus Electrochemotherapy with Bleomycin in an In Vivo CAM-Based Uveal Melanoma Xenograft Model. Int J Mol Sci 2024; 25:938. [PMID: 38256012 PMCID: PMC10815639 DOI: 10.3390/ijms25020938] [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: 11/29/2023] [Revised: 01/05/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Despite recent advancements in the diagnosis and treatment of uveal melanoma (UM), its metastatic rate remains high and is accompanied by a highly dismal prognosis, constituting an unmet need for the development of novel adjuvant therapeutic strategies. We established an in vivo chick chorioallantoic membrane (CAM)-based UM xenograft model from UPMD2 and UPMM3 cell lines to examine its feasibility for the improvement of selection of drug candidates. The efficacy of calcium electroporation (CaEP) with 5 or 10 mM calcium chloride (Ca) and electrochemotherapy (ECT) with 1 or 2.5 µg/mL bleomycin in comparison to monotherapy with the tested drug or electroporation (EP) alone was investigated on the generated UM tumors. CaEP and ECT showed a similar reduction of proliferation and melanocytic expansion with a dose-dependent effect for bleomycin, whereas CaEP induced a significant increase of the apoptosis and a reduction of vascularization with varying sensitivity for the two xenograft types. Our in vivo results suggest that CaEP and ECT may facilitate the adequate local tumor control and contribute to the preservation of the bulbus, potentially opening new horizons in the adjuvant treatment of advanced UM.
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Affiliation(s)
- Theodora Tsimpaki
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Hufeland Str. 55, 45147 Essen, Germany; (T.T.); (R.A.); (H.L.); (N.E.B.); (U.B.-P.); (M.M.K.)
| | - Ralitsa Anastasova
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Hufeland Str. 55, 45147 Essen, Germany; (T.T.); (R.A.); (H.L.); (N.E.B.); (U.B.-P.); (M.M.K.)
| | - Hongtao Liu
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Hufeland Str. 55, 45147 Essen, Germany; (T.T.); (R.A.); (H.L.); (N.E.B.); (U.B.-P.); (M.M.K.)
| | - Berthold Seitz
- Department of Ophthalmology, Saarland University Medical Center, Kirrberger Str. 100, 66421 Homburg, Germany;
| | - Nikolaos E. Bechrakis
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Hufeland Str. 55, 45147 Essen, Germany; (T.T.); (R.A.); (H.L.); (N.E.B.); (U.B.-P.); (M.M.K.)
| | - Utta Berchner-Pfannschmidt
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Hufeland Str. 55, 45147 Essen, Germany; (T.T.); (R.A.); (H.L.); (N.E.B.); (U.B.-P.); (M.M.K.)
| | - Miriam M. Kraemer
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Hufeland Str. 55, 45147 Essen, Germany; (T.T.); (R.A.); (H.L.); (N.E.B.); (U.B.-P.); (M.M.K.)
| | - Miltiadis Fiorentzis
- Department of Ophthalmology, University Hospital Essen, University of Duisburg-Essen, Hufeland Str. 55, 45147 Essen, Germany; (T.T.); (R.A.); (H.L.); (N.E.B.); (U.B.-P.); (M.M.K.)
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