Treatment of ovarian cancer by targeting the tumor stem cell-associated carbohydrate antigen, Sialyl-Thomsen-nouveau
Autor: | David A. Eavarone, Linah Al-Alem, Bianca Zarrella, Kristen D. Starbuck, Bo R. Rueda, Whitfield B. Growdon, Rosemary Foster, Daniel T Dransfield, Chiara Bellio, Silvia F. Hernandez, Jillian M. Prendergast, Jenna Stein, Jeff Behrens |
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Rok vydání: | 2018 |
Předmět: |
0301 basic medicine
cancer stem cell Antibody-drug conjugate endocrine system diseases tumor-associated carbohydrate antigen Biology antibody-drug conjugate 03 medical and health sciences 0302 clinical medicine Antigen Cancer stem cell In vivo medicine Viability assay sialyl-Tn medicine.disease female genital diseases and pregnancy complications In vitro nervous system diseases 3. Good health ovarian cancer surgical procedures operative 030104 developmental biology nervous system Oncology Cell culture 030220 oncology & carcinogenesis Cancer research Ovarian cancer Research Paper |
Zdroj: | Oncotarget |
ISSN: | 1949-2553 |
Popis: | Recurrent ovarian cancer (OvCa) is thought to result in part from the inability to eliminate rare quiescent cancer stem cells (CSCs) that survive cytotoxic chemotherapy and drive tumor resurgence. The Sialyl-Thomsen-nouveau antigen (STn) is a carbohydrate moiety present on protein markers of CSCs in pancreatic, colon, and gastric malignancies. We have demonstrated that human OvCa cell lines contain varying levels of cells that independently express either STn or the ovarian CSC marker CD133. Here we determine co-expression of STn and CD133 in a subset of human OvCa cell lines. Analyses of colony and sphere forming capacity and of response to standard-of-care cytotoxic therapy suggest a subset of OvCa STn+ cells display some CSC features. The effect of the anti-STn antibody-drug conjugates (ADCs) S3F-CL-MMAE and 2G12-2B2-CL-MMAE on OvCa cell viability in vitro and in vivo was also assessed. Treatment with S3F-CL-MMAE reduced the viability of two of three OvCa cell lines in vitro and exposure to either S3F-CL-MMAE or 2G12-2B2-CL-MMAE reduced OVCAR3-derived xenograft volume in vivo, depleting STn+ tumor cells. In summary, STn+ cells demonstrate some stem-like properties and specific therapeutic targeting of STn in ovarian tumors may be an effective clinical strategy to eliminate both STn+ CSC and STn+ non-CSC populations. |
Databáze: | OpenAIRE |
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