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changh
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2Â¥2012-01-12 05:43:29
sally208
ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)
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ר¼Ò¾Ñé: +19 - SEPI: 1
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1.Ë®ÈÜÐÔÁ¿×ÓµãÓÉÓÚÆä±¾ÉíÁ£¾¶½ÏСÊDz»ÊÇ»áÖ±½Ó½øÈëϸ°û£¿»¹ÓÐûÓÐÆäËûÔÒòʹµÃÁ¿×Óµã½øÈëϸ°û°¡£¿ Comment: Depending the surface ligands and cell lines, QDs can possibly enter the cells via simple endocytosis. Othe possible approaches to deliver QDs into the cells include the aid of cell penetrating peptides, targeting ligands, pulsed injection and so on. 2.Èç¹ûÈçÉÏÊö£¬µ¥´¿Á¿×ÓµãÄܽøÈëϸ°û£¬¶øÁ¿×ÓµãÁ¬½ÓÁ˵¥¿Ë¡¿¹ÌåÖ®ºóÆäÁ£¾¶±ä´ó£¬·´¶ø²»ÄܽøÈëϸ°ûÁË£¬ÕâÑùÆñ²»ÊÇûÓÐÒâÒåÁË£¿ Comment: Size is only one of many parameters affecting the cellular uptake of nanoparticles. In some cases, nanoparticles larger than 100 nm can also be easily internalized by macrophage. Conjugation of QDs with antibody can also possibly enter the cells even the size becomes larger. 3.ÈçºÎ²ÅÄÜÈõ¥´¿µÄÁ¿×ӵ㲻½øÈëϸ°û°¡£¿ Comment: Usually, QDs with neutral charge have very low uptake efficiency. For example, QDs functionalized with PEG is well known to minimize non-specific cellular uptake. Recommend a nice review to you: Endocytosis and intracellular transport of nanoparticles: Present knowledge and need for future studies, Nano Today 2011, 6, 176. http://217.219.202.60/documents/ ... ar+transport+of.pdf Good luck! ![]() |
3Â¥2012-01-12 06:21:09
hanlihao
½ð³æ (СÓÐÃûÆø)
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- ×¢²á: 2009-11-24
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谢谢Sally208的解ç”ï¼Œç»§ç»æ±‚教: 1.带何ç§?电è?·çš„é‡?å?点会粘附å?„ç§?细胞啊? 2.å?•纯的水溶性é‡?å?点,任æ„?一ç§?细胞,固定å?Žç”¨è¿™ä¸ªé‡?å?点åµè‚²ï¼Œç»“果细胞膜细胞浆全都是é‡?å?点,而ç?†æƒ³çš„结果应该是细胞ä¸?粘附é‡?å?ç‚¹ï¼Œæ‰€ä»¥æƒ³è¯·æ•™è¿™æ˜¯å› ä¸ºé‡?å?ç‚¹æ²¡æœ‰ä¿®é¥°å¥½é€ æˆ?çš„å?—?如您所说,如果修饰å?Žçš„é‡?å?点表é?¢ä¸?带电è?·æ˜¯ä¸?是就应该ä¸?粘附细胞了? |
4Â¥2012-01-13 00:00:16
xiaoxiangtu
½ð³æ (СÓÐÃûÆø)
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5Â¥2012-08-19 20:35:55
hao-
Ìú¸Ëľ³æ (ÕýʽдÊÖ)
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6Â¥2012-10-08 20:42:24













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