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  • 1
    Publication Date: 1998-03-21
    Description: The T cell receptor (TCR) inherently has dual specificity. T cells must recognize self-antigens in the thymus during maturation and then discriminate between foreign pathogens in the periphery. A molecular basis for this cross-reactivity is elucidated by the crystal structure of the alloreactive 2C TCR bound to self peptide-major histocompatibility complex (pMHC) antigen H-2Kb-dEV8 refined against anisotropic 3.0 angstrom resolution x-ray data. The interface between peptide and TCR exhibits extremely poor shape complementarity, and the TCR beta chain complementarity-determining region 3 (CDR3) has minimal interaction with the dEV8 peptide. Large conformational changes in three of the TCR CDR loops are induced upon binding, providing a mechanism of structural plasticity to accommodate a variety of different peptide antigens. Extensive TCR interaction with the pMHC alpha helices suggests a generalized orientation that is mediated by the Valpha domain of the TCR and rationalizes how TCRs can effectively "scan" different peptides bound within a large, low-affinity MHC structural framework for those that provide the slight additional kinetic stabilization required for signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garcia, K C -- Degano, M -- Pease, L R -- Huang, M -- Peterson, P A -- Teyton, L -- Wilson, I A -- AI42266/AI/NIAID NIH HHS/ -- AI42267/AI/NIAID NIH HHS/ -- R01 CA58896/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1998 Feb 20;279(5354):1166-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and the Skaggs Institute of Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9469799" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Crystallization ; Crystallography, X-Ray ; H-2 Antigens/*chemistry/*immunology/metabolism ; Ligands ; Mice ; Mice, Transgenic ; Models, Molecular ; Mutation ; Oligopeptides/*chemistry/immunology/metabolism ; Protein Conformation ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell, alpha-beta/*chemistry/*immunology/metabolism ; Recombinant Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2000-04-25
    Description: Susceptibility to murine and human insulin-dependent diabetes mellitus correlates strongly with major histocompatibility complex (MHC) class II I-A or HLA-DQ alleles that lack an aspartic acid at position beta57. I-Ag7 lacks this aspartate and is the only class II allele expressed by the nonobese diabetic mouse. The crystal structure of I-Ag7 was determined at 2.6 angstrom resolution as a complex with a high-affinity peptide from the autoantigen glutamic acid decarboxylase (GAD) 65. I-Ag7 has a substantially wider peptide-binding groove around beta57, which accounts for distinct peptide preferences compared with other MHC class II alleles. Loss of Asp(beta57) leads to an oxyanion hole in I-Ag7 that can be filled by peptide carboxyl residues or, perhaps, through interaction with the T cell receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Corper, A L -- Stratmann, T -- Apostolopoulos, V -- Scott, C A -- Garcia, K C -- Kang, A S -- Wilson, I A -- Teyton, L -- CA58896/CA/NCI NIH HHS/ -- DK55037/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2000 Apr 21;288(5465):505-11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10775108" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Aspartic Acid/chemistry ; Crystallography, X-Ray ; Diabetes Mellitus, Type 1/*immunology ; Drosophila melanogaster ; *Genes, MHC Class II ; Glutamate Decarboxylase/metabolism ; Histocompatibility Antigens Class II/*chemistry/genetics/metabolism ; Humans ; Hydrogen Bonding ; Mice ; Mice, Inbred NOD ; Models, Molecular ; Molecular Sequence Data ; Peptide Library ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell/metabolism ; Recombinant Proteins/chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2007-04-14
    Description: The pre-B cell receptor (pre-BCR) serves as a checkpoint in B cell development. In the 2.7 angstrom structure of a human pre-BCR Fab-like fragment, consisting of an antibody heavy chain (HC) paired with the surrogate light chain, the "unique regions" of VpreB and lambda5 replace the complementarity-determining region 3 (CDR3) loop of an antibody light chain and appear to "probe" the HC CDR3, potentially influencing the selection of the antibody repertoire. Biochemical analysis indicates that the pre-BCR is impaired in its ability to recognize antigen, which, together with electron microscopic visualization of a pre-BCR dimer, suggests ligand-independent oligomerization as the likely signaling mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bankovich, Alexander J -- Raunser, Stefan -- Juo, Z Sean -- Walz, Thomas -- Davis, Mark M -- Garcia, K Christopher -- T32 AI007290/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2007 Apr 13;316(5822):291-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17431183" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Complementarity Determining Regions/chemistry/physiology ; Crystallography, X-Ray ; Humans ; Immunoglobulin Heavy Chains/chemistry/physiology ; Immunoglobulin Light Chains/chemistry/physiology ; Immunoglobulin Light Chains, Surrogate ; Membrane Glycoproteins/*chemistry/physiology/ultrastructure ; Mice ; Models, Molecular ; Pre-B Cell Receptors ; Protein Conformation ; Receptors, Antigen, B-Cell/*chemistry/physiology/ultrastructure ; Recombinant Proteins ; Structure-Activity Relationship
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2005-04-12
    Description: Gammadelta T cell receptors (TCRs), alphabeta TCRs, and antibodies are the three lineages of somatically recombined antigen receptors. The structural basis for ligand recognition is well defined for alphabeta TCR and antibodies but is lacking for gammadelta TCRs. We present the 3.4 A structure of the murine gammadelta TCR G8 bound to its major histocompatibility complex (MHC) class Ib ligand, T22. G8 predominantly uses germline-encoded residues of its delta chain complementarity-determining region 3 (CDR3) loop to bind T22 in an orientation substantially different from that seen in alphabeta TCR/peptide-MHC. That junctionally encoded G8 residues play an ancillary role in binding suggests a fusion of innate and adaptive recognition strategies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adams, Erin J -- Chien, Yueh-Hsiu -- Garcia, K Christopher -- AI048540/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2005 Apr 8;308(5719):227-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Fairchild D319, 299 Campus Drive, Stanford, CA 94035-5124, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15821084" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Cell Line ; Cloning, Molecular ; Crystallography, X-Ray ; Dimerization ; Histocompatibility Antigens Class I/*chemistry ; Humans ; Insects ; Mice ; Protein Binding ; Protein Conformation ; Proteins/*chemistry/immunology ; Receptors, Antigen, T-Cell, gamma-delta/*chemistry/immunology ; Recombinant Proteins/chemistry ; T-Lymphocytes/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2012-03-27
    Description: The immunostimulatory cytokine interleukin-2 (IL-2) is a growth factor for a wide range of leukocytes, including T cells and natural killer (NK) cells. Considerable effort has been invested in using IL-2 as a therapeutic agent for a variety of immune disorders ranging from AIDS to cancer. However, adverse effects have limited its use in the clinic. On activated T cells, IL-2 signals through a quaternary 'high affinity' receptor complex consisting of IL-2, IL-2Ralpha (termed CD25), IL-2Rbeta and IL-2Rgamma. Naive T cells express only a low density of IL-2Rbeta and IL-2Rgamma, and are therefore relatively insensitive to IL-2, but acquire sensitivity after CD25 expression, which captures the cytokine and presents it to IL-2Rbeta and IL-2Rgamma. Here, using in vitro evolution, we eliminated the functional requirement of IL-2 for CD25 expression by engineering an IL-2 'superkine' (also called super-2) with increased binding affinity for IL-2Rbeta. Crystal structures of the IL-2 superkine in free and receptor-bound forms showed that the evolved mutations are principally in the core of the cytokine, and molecular dynamics simulations indicated that the evolved mutations stabilized IL-2, reducing the flexibility of a helix in the IL-2Rbeta binding site, into an optimized receptor-binding conformation resembling that when bound to CD25. The evolved mutations in the IL-2 superkine recapitulated the functional role of CD25 by eliciting potent phosphorylation of STAT5 and vigorous proliferation of T cells irrespective of CD25 expression. Compared to IL-2, the IL-2 superkine induced superior expansion of cytotoxic T cells, leading to improved antitumour responses in vivo, and elicited proportionally less expansion of T regulatory cells and reduced pulmonary oedema. Collectively, we show that in vitro evolution has mimicked the functional role of CD25 in enhancing IL-2 potency and regulating target cell specificity, which has implications for immunotherapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3338870/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3338870/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levin, Aron M -- Bates, Darren L -- Ring, Aaron M -- Krieg, Carsten -- Lin, Jack T -- Su, Leon -- Moraga, Ignacio -- Raeber, Miro E -- Bowman, Gregory R -- Novick, Paul -- Pande, Vijay S -- Fathman, C Garrison -- Boyman, Onur -- Garcia, K Christopher -- AR050942/AR/NIAMS NIH HHS/ -- GM07365/GM/NIGMS NIH HHS/ -- R01 AI051321/AI/NIAID NIH HHS/ -- R01 AI051321-05/AI/NIAID NIH HHS/ -- R01 CA065237/CA/NCI NIH HHS/ -- R01-GM062868/GM/NIGMS NIH HHS/ -- R01AI51321/AI/NIAID NIH HHS/ -- R37 AI051321/AI/NIAID NIH HHS/ -- T32 AI007290/AI/NIAID NIH HHS/ -- U01 DK078123/DK/NIDDK NIH HHS/ -- U19 AI 082719/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Mar 25;484(7395):529-33. doi: 10.1038/nature10975.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22446627" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Cell Line ; Cell Proliferation ; Crystallography, X-Ray ; *Directed Molecular Evolution ; Humans ; Immunotherapy ; Interleukin-2/*chemistry/genetics/*immunology/pharmacology ; Interleukin-2 Receptor alpha Subunit/chemistry/deficiency/immunology/metabolism ; Interleukin-2 Receptor beta Subunit/chemistry/metabolism ; Killer Cells, Natural/immunology ; Mice ; Mice, Inbred C57BL ; Models, Molecular ; Molecular Dynamics Simulation ; Mutant Proteins/*chemistry/genetics/*immunology/pharmacology ; Mutation ; Neoplasm Transplantation ; Neoplasms/drug therapy/immunology ; Phosphorylation ; Protein Conformation ; *Protein Engineering ; STAT5 Transcription Factor/metabolism ; Surface Plasmon Resonance ; T-Lymphocytes/cytology/immunology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 1992-07-24
    Description: Genetic and sequence information are reported for an angiotensin II-reactive antibody (Ab1, MAb 110) and an anti--anti-idiotypic antibody (Ab3, MAb 131) that have identical antigen binding properties and that are related by an anti-idiotypic antibody (Ab2-beta) that satisfies accepted biochemical criteria for an internal image-bearing antibody. The sequences of the variable regions of the Ab3 and of the Ab1 are nearly identical, even though the Ab1 is an antibody to a peptide and the Ab3 is an antibody to a globular protein. Significantly, amino acid residues that make critical contacts with antigen in the crystal structure of the Ab3-antigen complex are highly conserved in Ab1, suggesting that the epitopes of the Ab2-beta recognized by the Ab3 do indeed resemble the bound structure of the antigen.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garcia, K C -- Desiderio, S V -- Ronco, P M -- Verroust, P J -- Amzel, L M -- 6M 44692/PHS HHS/ -- New York, N.Y. -- Science. 1992 Jul 24;257(5069):528-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biophysics and Biophysical Chemistry, Johns Hopkins University Medical School, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1636087" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Angiotensin II/chemistry/*immunology ; Animals ; Antibodies, Anti-Idiotypic/chemistry/genetics/*immunology ; Antibodies, Monoclonal/chemistry/genetics/*immunology ; Antigen-Antibody Complex ; Base Sequence ; Cell Line ; Hybridomas/immunology ; Immunoglobulin Heavy Chains/genetics/immunology ; Immunoglobulin Light Chains/genetics/immunology ; Immunoglobulin Variable Region/chemistry/genetics/immunology ; Mice ; Mice, Inbred BALB C/immunology ; Models, Molecular ; Molecular Sequence Data ; Plasmacytoma ; Protein Conformation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 1996-10-11
    Description: The central event in the cellular immune response to invading microorganisms is the specific recognition of foreign peptides bound to major histocompatibility complex (MHC) molecules by the alphabeta T cell receptor (TCR). The x-ray structure of the complete extracellular fragment of a glycosylated alphabeta TCR was determined at 2.5 angstroms, and its orientation bound to a class I MHC-peptide (pMHC) complex was elucidated from crystals of the TCR-pMHC complex. The TCR resembles an antibody in the variable Valpha and Vbeta domains but deviates in the constant Calpha domain and in the interdomain pairing of Calpha with Cbeta. Four of seven possible asparagine-linked glycosylation sites have ordered carbohydrate moieties, one of which lies in the Calpha-Cbeta interface. The TCR combining site is relatively flat except for a deep hydrophobic cavity between the hypervariable CDR3s (complementarity-determining regions) of the alpha and beta chains. The 2C TCR covers the class I MHC H-2Kb binding groove so that the Valpha CDRs 1 and 2 are positioned over the amino-terminal region of the bound dEV8 peptide, the Vbeta chain CDRs 1 and 2 are over the carboxyl-terminal region of the peptide, and the Valpha and Vbeta CDR3s straddle the peptide between the helices around the central position of the peptide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garcia, K C -- Degano, M -- Stanfield, R L -- Brunmark, A -- Jackson, M R -- Peterson, P A -- Teyton, L -- Wilson, I A -- R01 CA58896/CA/NCI NIH HHS/ -- T32-A107244/PHS HHS/ -- New York, N.Y. -- Science. 1996 Oct 11;274(5285):209-19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and the Skaggs Institute of Chemical Biology, Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8824178" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbohydrate Sequence ; Cells, Cultured ; Crystallization ; Crystallography, X-Ray ; Drosophila melanogaster ; Glycosylation ; H-2 Antigens/*chemistry/immunology/metabolism ; Hydrogen Bonding ; Major Histocompatibility Complex ; Mice ; Models, Molecular ; Molecular Sequence Data ; Peptides/*chemistry/immunology/metabolism ; *Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Receptors, Antigen, T-Cell, alpha-beta/*chemistry/immunology/metabolism ; Recombinant Proteins ; T-Lymphocytes, Cytotoxic/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2012-06-02
    Description: Wnts are lipid-modified morphogens that play critical roles in development principally through engagement of Frizzled receptors. The 3.25 angstrom structure of Xenopus Wnt8 (XWnt8) in complex with mouse Frizzled-8 (Fz8) cysteine-rich domain (CRD) reveals an unusual two-domain Wnt structure, not obviously related to known protein folds, resembling a "hand" with "thumb" and "index" fingers extended to grasp the Fz8-CRD at two distinct binding sites. One site is dominated by a palmitoleic acid lipid group projecting from serine 187 at the tip of Wnt's thumb into a deep groove in the Fz8-CRD. In the second binding site, the conserved tip of Wnt's "index finger" forms hydrophobic amino acid contacts with a depression on the opposite side of the Fz8-CRD. The conservation of amino acids in both interfaces appears to facilitate ligand-receptor cross-reactivity, which has important implications for understanding Wnt's functional pleiotropy and for developing Wnt-based drugs for cancer and regenerative medicine.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3577348/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3577348/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Janda, Claudia Y -- Waghray, Deepa -- Levin, Aron M -- Thomas, Christoph -- Garcia, K Christopher -- R01 GM097015/GM/NIGMS NIH HHS/ -- R01-GM097015/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Jul 6;337(6090):59-64. doi: 10.1126/science.1222879. Epub 2012 May 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22653731" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Amino Acid Sequence ; Animals ; Binding Sites ; Crystallography, X-Ray ; Cysteine/chemistry ; Fatty Acids, Monounsaturated/chemistry ; Glycosylation ; Hydrophobic and Hydrophilic Interactions ; Ligands ; Mice ; Models, Molecular ; Molecular Sequence Data ; Protein Binding ; Protein Folding ; Protein Interaction Domains and Motifs ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Receptors, G-Protein-Coupled/*chemistry/metabolism ; Recombinant Proteins/chemistry/metabolism ; Wnt Proteins/*chemistry/metabolism ; Wnt Signaling Pathway ; Xenopus Proteins/*chemistry/metabolism ; Xenopus laevis
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2013-06-01
    Description: CD47 is an antiphagocytic signal that cancer cells employ to inhibit macrophage-mediated destruction. Here, we modified the binding domain of human SIRPalpha, the receptor for CD47, for use as a CD47 antagonist. We engineered high-affinity SIRPalpha variants with about a 50,000-fold increased affinity for human CD47 relative to wild-type SIRPalpha. As high-affinity SIRPalpha monomers, they potently antagonized CD47 on cancer cells but did not induce macrophage phagocytosis on their own. Instead, they exhibited remarkable synergy with all tumor-specific monoclonal antibodies tested by increasing phagocytosis in vitro and enhancing antitumor responses in vivo. This "one-two punch" directs immune responses against tumor cells while lowering the threshold for macrophage activation, thereby providing a universal method for augmenting the efficacy of therapeutic anticancer antibodies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3810306/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3810306/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiskopf, Kipp -- Ring, Aaron M -- Ho, Chia Chi M -- Volkmer, Jens-Peter -- Levin, Aron M -- Volkmer, Anne Kathrin -- Ozkan, Engin -- Fernhoff, Nathaniel B -- van de Rijn, Matt -- Weissman, Irving L -- Garcia, K Christopher -- CA139490/CA/NCI NIH HHS/ -- F30 CA168059/CA/NCI NIH HHS/ -- F30 DK094541/DK/NIDDK NIH HHS/ -- F30CA168059/CA/NCI NIH HHS/ -- F30DK094541/DK/NIDDK NIH HHS/ -- GM07365/GM/NIGMS NIH HHS/ -- P01 CA139490/CA/NCI NIH HHS/ -- P30 CA124435/CA/NCI NIH HHS/ -- R01 CA086017/CA/NCI NIH HHS/ -- R01 CA112270/CA/NCI NIH HHS/ -- R01 CA177684/CA/NCI NIH HHS/ -- T32 AI007290/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Jul 5;341(6141):88-91. doi: 10.1126/science.1238856. Epub 2013 May 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23722425" target="_blank"〉PubMed〈/a〉
    Keywords: *Adjuvants, Immunologic ; Animals ; Antibodies, Monoclonal/*therapeutic use ; Antibodies, Monoclonal, Murine-Derived/therapeutic use ; Antibodies, Neoplasm/*therapeutic use ; Antigens, CD47/*immunology ; Antigens, Differentiation/chemistry/genetics/*therapeutic use ; Cell Line, Tumor ; Directed Molecular Evolution ; Humans ; Immunotherapy ; Macrophage Activation ; Mice ; Neoplasms/immunology/*therapy ; Phagocytosis ; Receptors, Immunologic/chemistry/genetics/*therapeutic use ; Rituximab
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2013-09-21
    Description: Soluble beta-amyloid (Abeta) oligomers impair synaptic plasticity and cause synaptic loss associated with Alzheimer's disease (AD). We report that murine PirB (paired immunoglobulin-like receptor B) and its human ortholog LilrB2 (leukocyte immunoglobulin-like receptor B2), present in human brain, are receptors for Abeta oligomers, with nanomolar affinity. The first two extracellular immunoglobulin (Ig) domains of PirB and LilrB2 mediate this interaction, leading to enhanced cofilin signaling, also seen in human AD brains. In mice, the deleterious effect of Abeta oligomers on hippocampal long-term potentiation required PirB, and in a transgenic model of AD, PirB not only contributed to memory deficits present in adult mice, but also mediated loss of synaptic plasticity in juvenile visual cortex. These findings imply that LilrB2 contributes to human AD neuropathology and suggest therapeutic uses of blocking LilrB2 function.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3853120/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3853120/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Taeho -- Vidal, George S -- Djurisic, Maja -- William, Christopher M -- Birnbaum, Michael E -- Garcia, K Christopher -- Hyman, Bradley T -- Shatz, Carla J -- 5P50AG005134/AG/NIA NIH HHS/ -- 5R01AG041507/AG/NIA NIH HHS/ -- 5T32EY020485/EY/NEI NIH HHS/ -- EY02858/EY/NEI NIH HHS/ -- K08 NS069811/NS/NINDS NIH HHS/ -- K08NS069811/NS/NINDS NIH HHS/ -- NS069375/NS/NINDS NIH HHS/ -- R01 AG041507/AG/NIA NIH HHS/ -- R01 EY002858/EY/NEI NIH HHS/ -- R01 MH071666/MH/NIMH NIH HHS/ -- T32 EY020485/EY/NEI NIH HHS/ -- T32 MH020016/MH/NIMH NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Sep 20;341(6152):1399-404. doi: 10.1126/science.1242077.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology and Bio-X, James H. Clark Center, Stanford University, Stanford, CA 94305, USA. tkim808@stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24052308" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*physiopathology ; Amyloid beta-Peptides/*metabolism/pharmacology ; Animals ; Disease Models, Animal ; Female ; HEK293 Cells ; Hippocampus/physiopathology ; Humans ; Long-Term Potentiation ; Male ; Membrane Glycoproteins/genetics/*physiology ; Mice ; Mice, Transgenic ; *Neuronal Plasticity ; Peptide Fragments/*metabolism/pharmacology ; Receptors, Immunologic/genetics/*physiology ; Synapses/*physiology
    Print ISSN: 0036-8075
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