57 results about "CD154" patented technology

Improved anti-CD154 antibodies are provided herein which have ablated FcR binding and / or complement binding / activation. The use of these antibodies for inducing tolerance and treating immune diseases including autoimmunity, inflammation and allergic disorders is disclosed herein.

A method for constructing stable bioactive fusion proteins of the difficult to express tumor necrosis factor superfamily (TNFSF), and particularly members CD40L (CD154) and RANKL / TRANCE, with collecting, particularly pulmonary surfactant protein D (SPD) is described. Single trimers of these proteins lack the full stimulatory efficacy of the natural membrane forms of these proteins in many cases. The multimeric nature of these soluble fusion proteins enables them to engage multiple receptors on the responding cells, thereby, mimicking the effects of the membrane forms of these ligands. For CD40L-SPD, the resulting protein stimulates B cells, macrophages, and dendritic cells, indicating its potential usefulness as a vaccine adjuvant. The large size of these fusion proteins makes them less likely to diffuse into the circulation, thereby limiting their potential systemic toxicity. This property may be especially useful when these proteins are injected locally as a vaccine adjuvant or tumor immunotherapy agent to prevent them from diffusing away. In addition, these and other TNFSF-collectin fusion proteins present new possibilities for the expression of highly active, multimeric, soluble TNFSF members.

Improved anti-CD154 antibodies are provided herein which have ablated FcR binding and / or complement binding / activation. The use of these antibodies for inducing tolerance and treating immune diseases including autoimmunity, inflammation and allergic disorders is disclosed herein.

The present invention provides peptides, and fragments thereof, and antibodies, or fragments thereof comprising the same, wherein the peptide comprises at least one amino acid substitution compared to wild type 5c8 antibody. The present invention also provides compositions and methods of treating CD154-related diseases or disorders in a subject.

The invention relates to aglycosyl anti-CD154 antibodies or antibody derivatives, characterized by a modification at the conserved N-linked site in the CH2 domains of the Fc portion of said antibody. The invention also relates to the treatment of immune response related diseases and inhibition of unwanted immune responses with such aglycosylated anti-CD154 antibodies or antibody derivatives thereof.

The present disclosure relates to anti-CD40 antibodies, such as humanized anti-CD40 antibodies, that may be used in various therapeutic, prophylactic and diagnostic methods. The antibodies generally block the ability of CD40 to bind CD154 and do so without activating the cell expressing CD40 (e.g., a B cell). The present antibodies or fragments thereof may be used to reduce complications associated with organ or tissue transplantation.

Novel bifunctional peptides useful in the treatment and / or diagnosis of EAE or MS. The peptides have a first peptide portion derived from an epitope of myelin proteolipid protein, myelin oligodendrocyte glycoprotein, or oligodendrocyte-specific peptide and a second peptide portion derived from CD11a (LFA-1 alpha subunit), CD18 (LFA-1 beta subunit), CD154 (CD40L), Fas-Ligand, or CTLA4. The carboxy and / or amino termini of the bifunctional peptides may be modified.

The present invention provides for an isolated polynucleotide sequence encoding a chimeric CD154, comprising a first nucleotide sequence encoding an extracellular subdomain of non-human CD154, preferably murine CD154, that replaces a cleavage site of human CD154, and a second nucleotide sequence encoding an extracellular subdomain of human CD154 that binds to a human CD154 receptor. The present invention also provides for the chimeric CD154 that is encoded by the above-described polynucleotide sequence, an expression vector and a genetic vector comprising the polynucleotide sequence, a host cell comprising the expression vector or the genetic vector, a process for producing the chimeric CD154, and methods for utilizing the expression vectors and genetic constructs containing the chimeric CD154 polynucleotide sequences.