Pharmaceutics (Mar 2024)

Combined Delivery of miR-15/16 through Humanized Ferritin Nanocages for the Treatment of Chronic Lymphocytic Leukemia

  • Francesca Romana Liberati,
  • Sara Di Russo,
  • Lorenzo Barolo,
  • Giovanna Peruzzi,
  • Maria Vittoria Farina,
  • Sharon Spizzichino,
  • Federica Di Fonzo,
  • Deborah Quaglio,
  • Luca Pisano,
  • Bruno Botta,
  • Alessandra Giorgi,
  • Alberto Boffi,
  • Francesca Cutruzzolà,
  • Alessio Paone,
  • Paola Baiocco

DOI
https://doi.org/10.3390/pharmaceutics16030402
Journal volume & issue
Vol. 16, no. 3
p. 402

Abstract

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Chronic lymphocytic leukemia (CLL) is a widespread type of leukemia that predominantly targets B lymphocytes, undermining the balance between cell proliferation and apoptosis. In healthy B cells, miR-15/16, a tandem of microRNAs, functions as a tumor suppressor, curbing the expression of the antiapoptotic B cell lymphoma 2 protein (Bcl-2). Conversely, in CLL patients, a recurring deletion on chromosome 13q14, home to the miR15-a and miR16-1 genes, results in Bcl-2 overexpression, thereby fostering the onset of the pathology. In the present research, a novel approach utilizing humanized ferritin-based nanoparticles was employed to successfully deliver miR15-a and miR-16-1 into MEG01 cells, a model characterized by the classic CLL deletion and overexpression of the human ferritin receptor (TfR1). The loaded miR15-a and miR16-1, housed within modified HumAfFt, were efficiently internalized via the MEG01 cells and properly directed into the cytoplasm. Impressively, the concurrent application of miR15-a and miR16-1 demonstrated a robust capacity to induce apoptosis through the reduction in Bcl-2 expression levels. This technology, employing RNA-loaded ferritin nanoparticles, hints at promising directions in the battle against CLL, bridging the substantial gap left by traditional transfection agents and indicating a pathway that may offer hope for more effective treatments.

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