Global Patent Index - EP 1077997 A2

EP 1077997 A2 2001-02-28 - INHIBITION OF THE BINDING OF PROTEIN TYROSINE PHOSPHATASE PEST TO DOMAINS OF SIGNALLING PROTEINS

Title (en)

INHIBITION OF THE BINDING OF PROTEIN TYROSINE PHOSPHATASE PEST TO DOMAINS OF SIGNALLING PROTEINS

Title (de)

BEHINDERUNG DER VERBINDUNG ZWISCHEN PROTEIN TYROSIN-PHOSPHATASE PEST UND SIGNALPROTEINE

Title (fr)

AGENTS INTERFERANT AVEC LA LIAISON DE TYPROSINE-PHOSPHATASE PEST A DES DOMAINES DE PROTEINES DE SIGNALISATION EN TANT QU'INHIBITEURS DE MIGRATION CELLULAIRE ET/OU D'ADHESION FOCALE

Publication

EP 1077997 A2 (EN)

Application

EP 99922004 A

Priority

  • CA 9900461 W
  • CA 2238654 A
  • US 11199398 P

Abstract (en)

[origin: WO9961467A2] This invention relates to agents or compounds capable of interfering with the binding of protein tyrosine phosphatase PEST to protein domains of signalling molecules involved in cell migration, focal adhesion and/or cell proliferation, namely p130cas and paxillin. The agents can be derived from the minimal sequences found in binding studies. PTP-PEST is a conserved phosphatase essential for embryo development. Knock-out cells (PTP-PEST -/-) have been perpetuated from null embryos and they show defects in cell migration, focal adhesion and cell proliferation. Therefore, any agent capable of interfering with the activity of PEST in a diseased target tissue, is considered to be a potential therapeutic agent to treat any disease having any of the following etiological components: cell proliferation, cancer, metastasis, inflammation, and angiogenesis. This invention further relates to a method for finding genuine substrates for enzymes, namely phosphatases, combining gene targetting knock-out technique and substrate-trapping technique with the aid of a substrate binding inactive mutant enzyme. By using a gene targetting knock-out technique, there are less artefacts than by using other techniques (using vanadate compounds, for example) wherein an artificial non-specific increase of the level of hyperphosphorylation occurs.

IPC 1-7 (main, further and additional classification)

C07K 14/00

IPC 8 full level (invention and additional information)

C12N 15/09 (2006.01); A61K 38/00 (2006.01); A61K 45/00 (2006.01); A61P 29/00 (2006.01); A61P 35/00 (2006.01); A61P 43/00 (2006.01); C07K 7/06 (2006.01); C07K 14/00 (2006.01); C07K 14/17 (2006.01); C07K 14/47 (2006.01); C07K 14/705 (2006.01); C12N 9/16 (2006.01); C12Q 1/02 (2006.01); C12Q 1/42 (2006.01); G01N 33/573 (2006.01)

CPC (invention and additional information)

C07K 14/705 (2013.01); C07K 14/47 (2013.01); C12N 9/16 (2013.01); C12Q 1/42 (2013.01); G01N 33/573 (2013.01); A61K 38/00 (2013.01); G01N 2500/10 (2013.01)

Citation (search report)

See references of WO 9961467A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9961467 A2 19991202; WO 9961467 A3 20000518; AU 3922999 A 19991213; EP 1077997 A2 20010228; JP 2002516338 A 20020604

INPADOC legal status


2005-06-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20041201

2001-02-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001129

2001-02-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE