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Pubmed ID :29201218
Publication Date : //

SVP-B5 peptide from Karsch scorpion venom exerts hyperproliferative effects on irradiated hematopoietic cells.


Previous studies have demonstrated the radioprotective efficacy of scorpion venom peptide, fraction II (SVPII) from the venom of Karsch. In the present study, the SVP-B5 polypeptide, which is one of the active components of SVPII, was purified using a two-step chromatographic process. SVP-B5 significantly promoted the proliferation of irradiated M-NFS-60 mouse-derived myelocytic leukemia cells. In addition, SVP-B5 effectively and persistently promoted hematopoietic recovery and expansion of hematopoietic cells after irradiation as demonstrated by cobblestone area forming cell and long-term bone marrow culture assays. Treatment of M-NFS-60 cells with SVP-B5 upregulated the expression of interleukin 3 receptor and activated the Janus kinase-2/signal transducer and activator of transcription 5 signaling pathway. In conclusion, the present study demonstrated that SVP-B5 has growth factor-like properties and may be used as a therapeutic modality in the recovery of severe myelosuppression, which is a common side effect of radiotherapy.

Authors : Wang Yan , Xing Baiqian , Li Ting , Wang Caixia , Zhou Meixun , Liu Yamin , Fan Lingjie , Hu Lili , Peng Xiang , Xiang Yongxin , Wang Han , Kong Tianhan , Dong Weihua , Guo Qifeng ,

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