文献分享(5):The CD8α–PILRα interaction maintains CD8+ T cell quiescence

细胞周期分析[流式,使用anti-KI-67、7-AAD胞内染色]:

7-AAD signal is proportional to DNA content

7-AAD信号:最右边的峰代表G2/M期细胞;最左边的峰代表G0/G1期细胞;两峰之间代表S期细胞

G0/G1细胞群中:Ki-67-为G0期细胞,Ki-67+为G1期细胞


Kim, K.H. and Sederstrom, J.M. 2015. Assaying cell cycle statususing flow cytometry. Curr. Protoc. Mol. Biol. 111:28.6.1-28.6.11.doi: 10.1002/0471142727.mb2806s111

anti-mouse CD8α mAb,clone 3D9的制备:

1.immunizing and boosting Armenian hamsters with recombinant CD8a-hIg fusion proteins

2.脾脏细胞与SP2/0细胞系融合,with PEG 1500(聚乙二醇)

3.select、clone、screen for mAb of 杂交瘤细胞


Hydrodynamic Delivery of DNA:

(transfection—the introduction of DNA into cells)

offers a simple, convenient means for the expression of significant levels of transgenes in the organs, especially the liver, of mice.

The hydrodynamics method involves the rapid injection of a large volume (approximately the blood volume) of a saline solution of DNA (often in the plasmids) into mice via the tail vein.【本文中6s内静脉注射1.5ml PBS】

Depending on the particular plasmid construct, gene expression can reach a maximum between 4–8 h after injection and the transgenes can remain transcriptionally active for more than 6 mo

the receptor array technology(寻找CD8a的配体):

1.编码full-length human membrane proteins的约6000个plasmids分别转染到384孔板中的293T细胞中

2.24h后,将20ng human CD8a-hIg fusion protein与5ng APC-conjugated anti-human IgG Fc 的混合物加入各个孔板中

3.12h后,在Mirrorball Fluorescence Cytometer上读取孔板数据信号。识别APC信号为阳性的孔(peak intensity and cell perimeter were used as cut-offs to detect APC+ cell) 

©著作权归作者所有,转载或内容合作请联系作者
【社区内容提示】社区部分内容疑似由AI辅助生成,浏览时请结合常识与多方信息审慎甄别。
平台声明:文章内容(如有图片或视频亦包括在内)由作者上传并发布,文章内容仅代表作者本人观点,简书系信息发布平台,仅提供信息存储服务。

相关阅读更多精彩内容

友情链接更多精彩内容