• Leonny Dwi Rizkita Universitas Gadjah Mada
  • RONNY MARTIEN Universitas Gadjah Mada


The development of nanomedicine for gene therapy in the past decade has widely gained interest such as miRNA transfection to cancer cells. Unfortunately, due to its nature character, miRNA is easy to decay by cellular enzymatic process and requires a carrier. As cationic biopolymer, chitosan is widely known as non-viral vector. However, the study of chitosan as miRNA delivery system remains small in number. We purposely to investigate the miRNA loaded chitosan nanoparticles to breast cancer cell lines. To obtain the nanocomplex, we formulate chitosan-antimiR-106b-5p using natrium tripolyphosphate (Na. TPP) through ionic gelation method. We characterized the nanochitosan formula by using gel electrophoresis, nanoquant for encapsulation of entrapment quantification, morphology appearance as viewed by Scanning Electron Microscope (SEM), nanochitosan size analysis; in vitro analysis using MCF-7 and T47D breast cancer cell lines; in-silico prediction of possible gene target; PCR analysis and gel electrophoresis for E2F1/GAPDH expression. We found efficiency entrapment value as respectively 96.7%, particle size analysis 458 ± 11.79 PI 0.65 ± 0.07, spherical morphology as viewed in SEM. No significant difference between the nanochitosan supplemented group and the control group in MCF-7 cells (p=0,067). However, the ratio of E2F1 to GAPDH was significantly lower than the control group after nanochitosan antimiR-106b-5p loaded at concentration 140 nanoMolar (p=0,022) and 35 nanoMolar (p=0,016). Our nanochitosan formula is non-toxic to use in MCF-7 cell line. As the formula was conjugated to synthetic antimiR-106b-5p, the E2F1 expression decreased.

Keywords: chitosan, nanoparticle, miR-106b-5p, breast cancer, E2F1


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Rizkita, L. D., YSRAFIL, Y., MARTIEN, R., & ASTUTI, I. (2020). CHITOSAN NANOPARTICLES MEDIATED DELIVERY MIR-106B-5P ON BREAST CANCER CELL LINE MCF-7 AND T47D. International Journal of Applied Pharmaceutics, 13(1). Retrieved from
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