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10.1038/s41598-017-11687-y

http://scihub22266oqcxt.onion/10.1038/s41598-017-11687-y
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C5593885!5593885 !28894233
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suck abstract from ncbi


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pmid28894233
      Sci+Rep 2017 ; 7 (1 ): 11242
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  • A pH-dependent Antibacterial Peptide Release Nano-system Blocks Tumor Growth in vivo without Toxicity #MMPMID28894233
  • Cao J ; Zhang Y ; Shan Y ; Wang J ; Liu F ; Liu H ; Xing G ; Lei J ; Zhou J
  • Sci Rep 2017[Sep]; 7 (1 ): 11242 PMID28894233 show ga
  • In this study, we designed a nano-system where a novel antibacterial peptide RGD-hylin a1 with reduced hemolysis than the commonly studied melittin was loaded onto mesoporous silica (HMS). We found out that the designed nano-system, RGD-hylin a1-HMS, released RGD-hylin a1 in a pH-dependent manner. It caused apoptosis of cancer cells at low dosage of the antibacterial peptide at pH?=?5.5, but was safe to the cells at pH?=?7. The hemolytic activity of RGD-hylin a1 itself was reduced by 50~100% by the nano-system depending on the dosage. When this nano-system was administered to tumor-bearing mice at low dosage via intravenous injection, the growth of the solid tumor was blocked by the RGD-hylin a1-HMS nano-system with a 50-60% inhibition rate relative to the PBS-treated control group in terms of tumor volume and weight. Further, the hemolytic activity of RGD-hylin a1 was completely eliminated within the delivery system with no other side effects observed. This study demonstrates that this smart pH-dependent antibacterial peptide release nano-system has superior potential for solid tumor treatments through intravenous administration. This smart-releasing system has great potential in further clinical applications.
  • |*Drug Delivery Systems [MESH]
  • |*Hydrogen-Ion Concentration [MESH]
  • |*Nanostructures [MESH]
  • |Animals [MESH]
  • |Antimicrobial Cationic Peptides/*metabolism [MESH]
  • |Antineoplastic Agents/*metabolism [MESH]
  • |Apoptosis/drug effects [MESH]
  • |Cell Line, Tumor [MESH]
  • |Cell Survival/drug effects [MESH]
  • |Disease Models, Animal [MESH]
  • |Hemolysis [MESH]
  • |Heterografts [MESH]
  • |Mice, Inbred BALB C [MESH]
  • |Models, Biological [MESH]
  • |Neoplasm Transplantation [MESH]
  • |Neoplasms/*drug therapy [MESH]


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