Description
Mannose receptor targeting by mannosylated liposomes has been demonstrated for a variety of mannosylated lipid conjugates in a variety of liposome morphologies and compositions in several different in vitro and in vivo models. There are several publications using a hydrophobic derivative of mannose (4-aminophenyl α-D-mannopyranoside) rather than using a mannosylated lipid in clodronate liposomes. This is mainly due to the high cost and complexity of synthesizing and conjugating mannose to lipid. 4-aminophenyl α-D-mannopyranoside is commercially available and far less expensive than synthesizing mannose conjugated lipid.
Why mannose? Mannose is one of the carbohydrate components of many bacterial and viral cell surfaces; therefore, the ever-efficient, highly redundant immune system has evolved multiple mechanisms for identifying pathogens based on mannose recognition. The animal and plant kingdoms likewise utilize carbohydrate recognition signaling mechanisms including mannose residues. Many publications evaluate other carbohydrates as targeting mechanisms for various cell types, however mannose targeting to phagocytes appears to be one of the more specific mechanisms identified to date. Mammalian cell surface identification molecules based on mannose binding, such as the ICAM family of leukocyte adhesion molecules, target the SIGN family of mannose receptors to accomplish self-recognition in vivo.
A well-known and cited study by Umezawa & Eto [1] demonstrates that liposomes containing aminophenyl mannoside were most efficiently incorporated into the mouse brain across the blood brain barrier. The radiolabeled liposomes bearing aminophenyl
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求采纳
步骤:1,RNA抽提(同RT)
2,逆转录,使用合成的oligo
3,p内参
4,使用根据已知序列设计的上游引物和提供下游引物做PCR,注意设计上游引物是退火温度与下游引物相差不大。
5,产物切胶回收,TA克隆测序
这个oligo和下游引物是我根据Takara和BD公司的manual自己设计的,经过我的使用效果很好。具体操作参照takara的3-racemanual。你先做3-race,了解熟悉下,成功后再做5-race。5-race要买试剂盒做,较为复杂!
请采纳。。。。
做一次5-RACE的话,克隆10个以上基因应该是可以的。本数据来源于百度地图,最终结果以百度地图最新数据为准。
请具体点,把联系方式和价位都说一下好吗?