210 results about "Chemotaxis" patented technology

Compositions are provided that comprise antibody against membrane proteins such as chemokine receptors. In particular, monoclonal human antibodies against human CXCR4 are provided that are capable of inhibiting HIV infection and chemotaxis in human breast cancer cells. The antibodies can be used as prophylactics or therapeutics to prevent and treat HIV infection and cancer, for screening drugs, and for diagnosing diseases or conditions associated with interactions with chemokine receptors.

Novel activating receptors of the Ig super-family expressed on human myeloid cells, called TREM(s) (triggering receptor expressed on myeloid cells) are provided. Specifically, two (2) members of TREMs, TREM-1 and TREM-2 are disclosed. TREM-1 is a transmembrane glycoprotein expressed selectively on blood neutrophils and a subset of monocytes but not on lymphocytes and other cell types and is upregulated by bacterial and fungal products. Use of TREM-1 in treatment and diagnosis of various inflammatory diseases is also provided. TREM-2 is also a transmembrane glycoprotein expressed selectively on mast cells and peripheral dendritic cells (DCs) but not on granulocytes or monocytes. DC stimulation via TREM-2 leads to DC maturation and resistance to apoptosis, and induces strong upregulation of CCR7 and subsequent chemotaxis toward macrophage inflammatory protein 3-β. TREM-2 has utility in modulating host immune responses in various immune disorders, including autoimmune diseases and allergic disorders.

Novel activating receptors of the lg super-family expressed on human myeloid cells, called TREM(s) (triggering receptor expressed on myeloid cells) are provided. Specifically, two (2) members of TREMs, TREM-1 and TREM-2 are disclosed. TREM-1 is a transmembrane glycoprotein expressed selectively on blood neutrophils and a subset of monocytes but not on lymphocytes and other cell types and is upregulated by bacterial and fungal products. Use of TREM-1 in treatment and diagnosis of various inflammatory diseases is also provided. TREM-2 is also a transmembrane glycoprotein expressed selectively on mast cells and peripheral dendritic cells (DCs) but not on granulocytes or monocytes. DC stimulation via TREM-2 leads to DC maturation and resistance to apoptosis, and induces strong upregulation of CCR7 and subsequent chemotaxis toward macrophage inflammatory protein 3-β. TREM-2 has utility in modulating host immune responses in various immune disorders, including autoimmune diseases and allergic disorders.

(R,S)-2-Aryl-propionic acids are useful as inhibitors of interleukin-8 induced human polymorphonucleated neutrophils (PMN) chemotaxis. (R,S)-2-Aryl-propionic acids of formula (I), their single (R) and (S) enantiomers or salts are useful as inhibitors of interleukin-8 (IL-8) induced human polymorphonucleated neutrophils (PMN) chemotaxis. [Image] Ar : phenyl ring (substituted by T in meta position, T1 in para position or T2 in ortho position); T : linear or branched 1-5C alkyl, 2-5C alkenyl, or 2-5C alkynyl (optionally substituted by 1-5C alkoxycarbonyl, optionally substituted phenyl, linear or branched 1-5C hydroxyalkyl or arylhydroxymethyl); T1benzoyloxy, benzoylamino, benzenesulfonyloxy, benzenesulfonylamino, benzenesulfonylmethyl (all optionally substituted), 1-5C acyloxy, 1-5C acylamino, 1-5C sulfonyloxy, 1-5C alkanesulfonylamino, 1-5C alkanesulfonylmethyl, 3-6C cycloalkyl, 2-furyl, 3-tetrahydrofuryl, 2- thiophenyl, 2-tetrahydrothiophenyl or ((1-8C)-alkanoyl, -cycloalkanoyl or -arylalkanoyl)-1-5C-alkylamino (preferably acetyl-N-methyl-amino or pivaloyl-N-ethyl-amino); and T2arylmethyl, aryloxy or acylamino (all optionally substituted by 1-4C alkyl, 1-4C-alkoxy, chlorine, fluorine or trifluoromethyl). The meta linear or branched 1-5C alkyl together with a substituent in ortho or para position and the benzene ring forms optionally saturated or optionally substituted bicyclo aryls. INDEPENDENT CLAIM are included for the following: (1) preparation of (I); and (2) use of (I) in the preparation of a medicament for the treatment of e.g. psoriasis, ulcerative colitis, melanoma and chronic obstructive pulmonary disease (COPD). - ACTIVITY : Antipsoriatic; Antiulcer; Respiratory-Gen.; Antirheumatic; Antiarthritic; Nephrotropic; Vasotropic; Antiinflammatory; Gastrointestinal-Gen.; Cytostatic. - MECHANISM OF ACTION : Interleukin-8 (IL-8) inhibitor; GROalpha inhibitor; CXCR2 agonist / antagonist. The ability of (R,S) 2-[(3'-isopropyl)phenyl]propionic acid (A) to inhibit IL-8 induced chemotaxis of human monocytes was tested as described in Van Damme J. et al. (Eur. J. Immunol., 19, 2367, 1989). (A) showed inhibition (%) of 51+-12.