Liu, Juan; Yu, Yuhua; Zhao, Jie; Zhao, Peng; Wen, Xuejun; Zhuang, Zhigang; Lin, Chao published the artcile< Integrating disulfides into a polyethylenimine gene carrier selectively boosts significant transfection activity in lung tissue enabling robust IL-12 gene therapy against metastatic lung cancers>, HPLC of Formula: 2127-03-9, the main research area is integrating disulfide polyethylenimine interleukin human metastatic lung cancer; Disulfide; Interleukin-12; Metastatic lung cancer; Polyethylenimine; Transfection.
Bioreducible polyethylenimines (SSPEIs) are promising non-viral carriers for cancer gene therapy. However, the availability of significant gene transfection activity by SSPEIs remains a challenge. Herein, an essential step was taken to ascertain whether or not the disulfide bonds of SSPEIs play a critical role in promoting significant gene transfection activity in different tissues. Initially, a disulfide-linked linear polyethylenimine (denoted as SSLPEI) consisting of one 5.0 kDa LPEI main chain and three disulfide-linked 5.7 kDa LPEI grafts was designed and prepared to possess similar mol. weight with commercialized 25 kDa LPEI as a pos. control. The SSLPEI could induce superior in vitro transfection activity in different cells to the LPEI control as well as low cytotoxicity. Notably, such enhanced in vitro transfection effect by the SSLPEI was more marked in type-II alveolar epithelial cells compared to different cancer cells. In a Balb/c nude mouse model bearing SKOV-3 tumor, the SSLPEI caused parallel level of transgene expression with the LPEI control in the tumor but significantly higher level in the mouse lung. Furthermore, the SSLPEI and LPEI groups afforded an identical antitumor efficacy against the SKOV-3 tumor via i.v. delivery of a shRNA for silencing VEGF expression in the tumor. However, via i.v. delivery of an interleukin-12 (IL-12) gene into metastatic lung cancers in a C57BL/6 mouse model, the SSLPEI group exerted markedly higher IL-12 expression level in the mouse lung and peripheral blood as compared to the LPEI group, thereby boosting IL-12 immunotherapy against the lung metastasis with longer medium survival time. The results of this work elicit that the disulfide bonds of SSPEIs play a pivotal role in enhancing gene transfection activity selectively in the lung tissue rather than solid tumor, enabling high translational potential of SSPEIs for non-viral gene therapy against metastatic lung cancers.
Materials Science & Engineering, C: Materials for Biological Applications published new progress about Alveolar epithelium. 2127-03-9 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2S2, HPLC of Formula: 2127-03-9.