PD-1 engagement enhances anti-tumor vaccine in mice

“B7-DC-Ig Enhances Vaccine Effect by a Novel Mechanism Dependent on PD-1 Expression level on T Cell Subsets” M. Mkrtichyan,  S.N. Khleif, et al. (2012) J Immunol 189(5): 2338-2347.   Engagement of CD279(PD-1) by recombinant CD273 (B7-DC)-muIg enhances effect of anti-tumor vaccine in mice. Two proposed mechanisms by which this recombinant protein may augment anti tumor […]

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CD4+ CD26(bright) Human T cells display Th17 phenotype

“Human Th17 Cells Express High Levels of Enzymatically active Dipeptidylpeptidase IV (CD26)” Bengsch B, R Thimme, et al, (2012) J Immunol 188(11): 5438-5447. In transwell assays, CD26(bright) Th17 cells inhibited chemotaxis of CXCR4+ Th1 T cells towards CXCL12.   CD26 appears to be an interesting and useful marker for Th17 autoimmunity. Ancell anti-CD26 reagents (clone 202.36):

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Citrullinated Protein and RA

A link found between autoimmune antibody specificity to Citrullinated Protein and development of Rheumatoid Arthritis. “Production of Autoantibodies against Citrullinated Antigens/Peptides by Human B Cells”  Maria F. Bellatin, Peter Stastny, et al. (2012) J Immunol 188(7): 3542-3550 Ancell has a large selection of Biotinylated anti-human monoclonal antibodies which would be useful for sorting and/or identifying

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Leptin affects Treg populations in SLE

Levels of the proinflammatory leptin correlated inversely with expansion of CD25+CD4+Foxp3+ T regulatory cells in a Systemic Lupus Erythematosus mouse model (NZB/W).  This could lead to a leptin-based immunotherapy.”Cutting Edge: Fasting Induced Hypoleptinemia Expands Functional Regulatory T cells in Systemic Lupus Erythematosus”Yaoyang Liu, Yiyun Yu, Antonio La Cava, (2012) J Immunol 188: 2070-2073.  Relevant Ancell

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Killer Islet Cells!

Transplanted islet cells were biochemically modified to protect their own long term engraftment in a mouse pancreas.  These cells have the super-ability to cause apoptosis to occur in the infiltrating pathogenic T cells.  This is a novel approach to diabetes treatment!  ”Pancreatic Islets Engineered with SA-FasL Protein Establish Robust Localized Tolerance by Inducing Regulatory T

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CD30-CD153 and CD134(OX40)-CD252 co stimulatory pathways are essential for CD4 dependant autoimmunity

“Abrogation of CD30 and OX40 signals prevents autoimmune disease in FoxP3-deficient mice”  FM Gaspal, PJL Lane, et al. (2011) JEM 208(8): 1579-1584.  Ancell related products Blocking anti-human CD30 mAb Recombinant  human CD134 and CD252 Proteins Anti-human CD134 and CD252 mAbs

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