Analyze the bioactivity of PD-1 and PD-L1 recombination protein which expressed by prokaryotic system / 中华实验和临床病毒学杂志
Chinese Journal of Experimental and Clinical Virology
; (6): 424-426, 2009.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-325523
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To analyze the interaction of PD-1 and PD-L1 recombination protein and to know their bioactivity and affinity.</p><p><b>METHODS</b>Stick the PD-1 protein on the surface of CM5 sensor chip by the method of Ammine coupling after being preconsentrated. Dilute the PD-L1 protein step by step and reject it to the passage on CM5 sensor chip which had been stick by PD-1. The time of combination is 3 minutes and of separation is 15 minutes, respectively. Observe the procession and analyze data by BIA Evaluation software 4.</p><p><b>RESULTS</b>On the consistency of 40 microg/ml, pH 4.5, the PD-1 protein could couple steady on the surface of CM5sensor chip, RU is 3300. On the density of 200 mmol/ml PD-L1 could combine with PD-1 specifically, RU = 150, K(D) = 3.5 x 10(-6).</p><p><b>CONCLUSION</b>The PD-1 and PD-L1 recombination protein which we expressed by prokaryotic system have good affinity and bioactivity. The results could provide basic condition for later study.</p>
Full text:
Available
Health context:
Neglected Diseases
Health problem:
Neglected Diseases
/
Zoonoses
Database:
WPRIM (Western Pacific)
Main subject:
Protein Binding
/
Recombinant Proteins
/
Kinetics
/
Antigens, CD
/
Gene Expression
/
Chemistry
/
Escherichia coli
/
Apoptosis Regulatory Proteins
/
B7-H1 Antigen
/
Programmed Cell Death 1 Receptor
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Experimental and Clinical Virology
Year:
2009
Document type:
Article