Compositions and methods for treating cellular response to...

C - Chemistry – Metallurgy – 07 – K

Patent

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C07K 16/28 (2006.01) A61K 31/7088 (2006.01) A61K 38/08 (2006.01) A61K 38/17 (2006.01) A61K 39/395 (2006.01) A61K 48/00 (2006.01) A61P 17/02 (2006.01) A61P 17/06 (2006.01) A61P 19/02 (2006.01) A61P 25/16 (2006.01) A61P 25/28 (2006.01) A61P 29/00 (2006.01) A61P 35/00 (2006.01) A61P 37/00 (2006.01) C07K 7/06 (2006.01) C07K 7/08 (2006.01) C07K 14/47 (2006.01) C07K 14/705 (2006.01) C07K 16/18 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2448483

The present invention provides compositions and methods for treating a tissue disorder associated with a response-to-injury process or proliferating cells in a mammal. These tissue disorders are associated with a novel cellular phenotype designated as "transition cells" which are described herein. This cellular phenotype is characterized in having an activated erk kinase signaling activity, a stimulated AP-1 binding activity, and at least one characteristic selected from the group consisting of: (a) increased podosome formation, (b) increased flux of intracellular or extracellular hyaluronans or hyaladherins, (c) increased expression of a hyaladherin, (d) an inability to form focal adhesions, (e) increased metalloproteinase activity, and (f) increased expression of a hyaladherin. Example tissue disorders include fibrosis, inflammation, degeneration and invasive disorders such as occur in cancerous cells. The methods provided herein include administering to the mammal, an effective amount of a composition that alters the activity of transition molecules within a cell. Transition molecules are shown to be comprised of hyaladherins, hyaluronans and associated molecules that regulate the transitional phenotype. A novel cell culture comprising transition cells is also provided, as well as compositions comprising particular peptides, polypeptides, and antibodies that affect the transitional phenotype.

La présente invention concerne des compositions et des procédés permettant de traiter un trouble tissulaire associé à un processus de réponse à une lésion ou à des cellules prolifératrices chez un mammifère. Ces troubles tissulaires sont associés à un nouveau phénotype cellulaire désigné par le terme "cellules de transition", qui est décrit ci-après. Ce phénotype cellulaire est caractérisé par une activité de signalisation erk kinase activée, une activité de liaison AP-1 stimulée, et au moins une caractéristique choisie dans le groupe composé de: (a) une formation de podosomes augmentée; (b) un flux augmenté de hyaluronanes ou de hyaladhérines intracellulaires ou extracellulaires, (c) une expression augmentée d'une hyaladhérine; (d) une incapacité à former des adhésions focales; (e) une activité métalloprotéinase augmentée; et (f) une expression augmentée d'une hyaladhérine. Des exemples de troubles tissulaires comprennent la fibrose, l'inflammation, la dégénérescence et les troubles invasifs tels que ceux qui se produisent dans les cellules cancéreuses. Les procédés de l'invention consistent à administrer au mammifère une quantité efficace d'une composition qui modifie l'activité des molécules de transition à l'intérieur d'une cellule. Les molécules de transition sont composées des hyaladhérines, des hyaluronanes et de molécules associées qui régulent le phénotype de transition. L'invention se rapporte également à une nouvelle culture cellulaire comprenant des cellules de transition, ainsi qu'à des compositions renfermant des peptides, des polypeptides et des anticorps particuliers qui modifient le phénotype de transition.

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