PMID- 26586612 OWN - NLM STAT- MEDLINE DCOM- 20161024 LR - 20171116 IS - 1096-0279 (Electronic) IS - 1046-5928 (Linking) VI - 119 DP - 2016 Mar TI - Cloning and high level expression of the biologically active extracellular domain of Macaca mulatta CD40 in Pichia pastoris. PG - 19-26 LID - S1046-5928(15)30101-7 [pii] LID - 10.1016/j.pep.2015.11.009 [doi] AB - The CD40-mediated immune response contributes to a wide variety of chronic inflammatory diseases. CD40 antagonists have potential as novel therapies for immune disorders. However, the CD40 pathway has not been well characterized in the rhesus monkey Macaca mulatta, which is a valuable animal model for human immune disease. An 834 bp transcript was cloned from peripheral blood mononuclear cells (PBMCs) of rhesus monkey using specific primers designed according to the predicted sequence of M. mulatta CD40 (mmCD40) in GenBank. Sequence analysis demonstrated that mmCD40 is highly homologous to human CD40 (hCD40), with an amino acid sequence identity of 94%. Genes encoding the extracellular domain of mmCD40 and the Fc fragment of the hIgG1 were inserted into a pPIC9K plasmid to produce mmCD40Ig by Pichia pastoris. Approximately 15-20 mg of the mmCD40Ig protein with approximately 90% purity could be recovered from 1 L of culture. The purified mmCD40Ig protein can form dimers and can specifically bind CD40L-positive cells. Additionally, the mmCD40Ig protein can bind hCD40L protein in phosphate buffered saline and form a stable combination in a size-exclusion chromatography assay using a Superdex 200 column. Moreover, mmCD40Ig is as efficient as M. mulatta CTLA4Ig (mmCTLA4Ig) to suppress Con A-stimulated lymphocyte proliferation. Additionally, mmCD40Ig only showed mild immunosuppressive activity in a one-way mixed lymphocyte reaction (MLR) system. These results suggest that mmCD40Ig secreted by P. pastoris was productive and functional, and it could be used as a tool for pathogenesis and therapies for chronic inflammatory diseases in a M. mulatta model. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Zhu, Shengyun AU - Zhu S AD - Key Lab of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, 610041, China. FAU - Wan, Lin AU - Wan L AD - Key Lab of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, 610041, China. FAU - Yang, Hao AU - Yang H AD - Key Lab of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, 610041, China. FAU - Cheng, Jingqiu AU - Cheng J AD - Key Lab of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, 610041, China. FAU - Lu, Xiaofeng AU - Lu X AD - Key Lab of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu, 610041, China. Electronic address: xiaofenglu@yahoo.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151114 PL - United States TA - Protein Expr Purif JT - Protein expression and purification JID - 9101496 RN - 0 (CD40 Antigens) RN - 0 (Immunosuppressive Agents) RN - 0 (Recombinant Proteins) RN - 147205-72-9 (CD40 Ligand) SB - IM MH - Amino Acid Sequence MH - Animals MH - CD40 Antigens/*biosynthesis/chemistry/genetics/pharmacology MH - CD40 Ligand/chemistry MH - Cell Line, Tumor MH - Cells, Cultured MH - Cloning, Molecular MH - Gene Expression MH - Glycosylation MH - Humans MH - Immunosuppressive Agents/chemistry/pharmacology MH - Leukocytes, Mononuclear/drug effects/physiology MH - Macaca mulatta MH - Mice MH - Molecular Sequence Data MH - Pichia MH - Protein Binding MH - Protein Multimerization MH - Protein Processing, Post-Translational MH - Protein Structure, Tertiary MH - Recombinant Proteins/biosynthesis/chemistry/genetics/pharmacology OTO - NOTNLM OT - CD40 OT - Chronic inflammatory disease OT - Immunosuppression OT - Pichia pastoris OT - Rhesus monkey EDAT- 2015/11/21 06:00 MHDA- 2016/10/25 06:00 CRDT- 2015/11/21 06:00 PHST- 2015/09/17 00:00 [received] PHST- 2015/10/21 00:00 [revised] PHST- 2015/11/09 00:00 [accepted] PHST- 2015/11/21 06:00 [entrez] PHST- 2015/11/21 06:00 [pubmed] PHST- 2016/10/25 06:00 [medline] AID - S1046-5928(15)30101-7 [pii] AID - 10.1016/j.pep.2015.11.009 [doi] PST - ppublish SO - Protein Expr Purif. 2016 Mar;119:19-26. doi: 10.1016/j.pep.2015.11.009. Epub 2015 Nov 14.