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Article

Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias

  • Authors:
    • Serena Pillozzi
    • Andrea Bernini
    • Ottavia Spiga
    • Barbara Lelli
    • Giulia Petroni
    • Luisa Bracci
    • Neri Niccolai
    • Annarosa Arcangeli
  • View Affiliations / Copyright

    Affiliations: Department of Experimental and Clinical Medicine, University of Florence, I‑50134 Florence, Italy, Department of Biotechnology, Chemistry and Pharmacy, University of Siena, I‑53100 Siena, Italy, Department of Medical Biotechnology, University of Siena, I‑53100 Siena, Italy
  • Pages: 312-324
    |
    Published online on: October 18, 2018
       https://doi.org/10.3892/or.2018.6808
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Abstract

Notable advances in treatment have been made and increases in the cure rates of pediatric leukemia have been achieved. However, the majority of children with relapsed disease are not expected to survive, with chemotherapy resistance acting as the principal cause of treatment failure. Interaction between leukemic cells and the bone marrow microenvironment is the primary cause of relapse. It was identified that a multi‑protein membrane complex, formed by potassium voltage‑gated channel subfamily H member 2 (hERG1) channels, the β1 integrin subunit and the stromal cell‑derived factor 12 (CXCL12) receptor, C‑X‑C chemokine receptor type 4 (CXCR4), exerts a role in mesenchymal stromal cell (MSC)‑mediated chemoresistance in pediatric leukemias. hERG1 blockade was able to overcome chemoresistance in vitro and in vivo. As an alternative strategy to overcome chemoresistance, the present study evaluated the effects of novel tools targeting the CXCR4/CXCL12 axis. The analysis of CXCL12 structural dynamics was used for the selection of a peptide (4‑1‑17) and a small molecule (8673), which interact with a transient hot spot, identified by a dynamic drug design approach. The present findings indicated that peptide 4‑1‑17 and small molecule 8673 inhibited leukemia cell proliferation and induced a pro‑apoptotic effect, which was not reduced by the presence of MSCs. The combined treatment with 4‑1‑17 and 8673 had a stronger pro‑apoptotic effect, particularly on cells cultured on MSCs in normoxic and hypoxic conditions, and was able to overcome MSC‑induced resistance to cytarabine. Overall, the targeting of CXCL12 and the ensuing inhibition of the CXCR4/CXCL12 axis may be proposed as an alternative strategy to overcome chemoresistance in leukemia.
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Copy and paste a formatted citation
Spandidos Publications style
Pillozzi S, Bernini A, Spiga O, Lelli B, Petroni G, Bracci L, Niccolai N and Arcangeli A: Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias. Oncol Rep 41: 312-324, 2019.
APA
Pillozzi, S., Bernini, A., Spiga, O., Lelli, B., Petroni, G., Bracci, L. ... Arcangeli, A. (2019). Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias. Oncology Reports, 41, 312-324. https://doi.org/10.3892/or.2018.6808
MLA
Pillozzi, S., Bernini, A., Spiga, O., Lelli, B., Petroni, G., Bracci, L., Niccolai, N., Arcangeli, A."Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias". Oncology Reports 41.1 (2019): 312-324.
Chicago
Pillozzi, S., Bernini, A., Spiga, O., Lelli, B., Petroni, G., Bracci, L., Niccolai, N., Arcangeli, A."Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias". Oncology Reports 41, no. 1 (2019): 312-324. https://doi.org/10.3892/or.2018.6808
Copy and paste a formatted citation
x
Spandidos Publications style
Pillozzi S, Bernini A, Spiga O, Lelli B, Petroni G, Bracci L, Niccolai N and Arcangeli A: Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias. Oncol Rep 41: 312-324, 2019.
APA
Pillozzi, S., Bernini, A., Spiga, O., Lelli, B., Petroni, G., Bracci, L. ... Arcangeli, A. (2019). Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias. Oncology Reports, 41, 312-324. https://doi.org/10.3892/or.2018.6808
MLA
Pillozzi, S., Bernini, A., Spiga, O., Lelli, B., Petroni, G., Bracci, L., Niccolai, N., Arcangeli, A."Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias". Oncology Reports 41.1 (2019): 312-324.
Chicago
Pillozzi, S., Bernini, A., Spiga, O., Lelli, B., Petroni, G., Bracci, L., Niccolai, N., Arcangeli, A."Peptides and small molecules blocking the CXCR4/CXCL12 axis overcome bone marrow‑induced chemoresistance in acute leukemias". Oncology Reports 41, no. 1 (2019): 312-324. https://doi.org/10.3892/or.2018.6808
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