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Design of Polymers for Intracellular Protein and Peptide Delivery 被引量:3
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作者 Yiyun Cheng 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2021年第6期1443-1449,共7页
Cytosolic protein delivery techniques are of great importance for cell biology,biotechnology and protein drug development.The design of carriers with robust efficiency in cytosolic protein delivery is challenging.This... Cytosolic protein delivery techniques are of great importance for cell biology,biotechnology and protein drug development.The design of carriers with robust efficiency in cytosolic protein delivery is challenging.This account provides a progress report of polymeric carriers for this purpose in our group.During the past years,we have developed several types of functionalized polymers for cytosolic protein and peptide delivery by engineering polymers with ligands such as guanidinium,boronate,coordination ligands and fluoroalkyls.The designed polymers showed improved protein/peptide binding affinities,and successfully delivered various cargo proteins into the cytosol of living cells,while maintaining their bioactivity.In addition,the polymers showed potent efficiencies in the delivery of tumor antigens,therapeutic peptides,toxins and antioxidant proteins in vivo.We hope these polymers could be translated for protein delivery in the treatment of various diseases in the future. 展开更多
关键词 POLYMERS intracellualr protein delivery PEPTIDES Cancer therapy DENDRIMERS
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TAG-1对U251细胞活力的影响及相关基因调节机制研究
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作者 常海刚 姜晓丹 +3 位作者 陈中灿 杨璐军 法志强 杜谋选 《中华神经医学杂志》 CAS CSCD 北大核心 2010年第2期109-114,共6页
目的探讨TAG-1对U251细胞的生长活力和粉样前体蛋白胞内段(AICD),p53和表皮生长因子受体(EGFR)~因表达变化的影响。方法以MTT法检测不同浓度TAG.1(0、5、10、20μg/mL)对U251细胞活力影响;免疫荧光细胞化学法观察U251细胞8淀... 目的探讨TAG-1对U251细胞的生长活力和粉样前体蛋白胞内段(AICD),p53和表皮生长因子受体(EGFR)~因表达变化的影响。方法以MTT法检测不同浓度TAG.1(0、5、10、20μg/mL)对U251细胞活力影响;免疫荧光细胞化学法观察U251细胞8淀粉样前体蛋白(APP)的表达;TUNEL法检测TAG-1对U251细胞凋亡形态学变化的影响:Real-time PCR检测TAG-1对U251细胞AICD,p53和EGFR基因表达的调控。结果TAG.1没有抑制U251细胞的生长.相反表现出一定的促生长效应;APP广泛表达于U251细胞膜;在TAG.1浓度为10μg/mL时,U251细胞形态学检测没有发现明显的凋亡细胞,但AICD,p53和EGFR基因表达增加。结论TAG-1在胶质瘤的增殖中发挥重要作用,但未发现其能通过TAG-1/APP/AICD/p53或TAG-1/APP,AJCD/EGFR信号途径促进U251细胞凋亡。 展开更多
关键词 TAG-1 粉样前体蛋白胞内段 神经胶质瘤 细胞凋亡
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