Showing papers by "Montserrat Camps published in 2001"

The nucleus, a site for signal termination by sequestration and inactivation of p42/p44 MAP kinases

Abstract: We previously reported that nuclear translocation is essential for p42/p44 MAPKs (ERKs) mitogenic signaling. Here we show that, during long-term stimulation, p42/p44 MAPKs become inactive while they accumulate in the nucleus. This inactivation was monitored by phospho-specific immunostaining and dephosphorylation of a nuclear p42/p44 MAPKs substrate, HIF-1 alpha. The phosphatases responsible for p42/p44 MAPKs nuclear inactivation are neo-synthesized, show tyrosine or dual specificity, and interact with p42/p44 MAPKs via a specific docking site. Likely candidates are MKP1/2 phosphatases. In addition, p42/p44 MAPKs permanently shuttle between the cytoplasm and the nucleus in quiescent as well as in serum stimulated cells. Hence, the nucleus is a critical site for mitogenic signal termination by: (1) nuclear sequestration of p42/p44 MAPKs away from MEK, their cytoplasmic activator; and (2) dephosphorylation by specific nuclear phosphatases.

Pharmaceutically active sulfonamide derivatives bearing both lipophilic and ionisable moieties as inhibitors of protein JunKinases

Abstract: The present invention is related to sulfonamide derivatives having a lipophilic moiety and which are substantially soluble. Said compounds are notably for use as pharmaceutically active compounds. The present invention also related to pharmaceutical formulations containing such sulfonamide derivatives. Said sulfonamide derivatives are efficient modulators of the JNK pathway, they are in particular efficient and selective inhibitors of JNK 2 and 3. The present invention is furthermore related to novel sulfonamide derivatives as well as to methods of their preparation. The compounds of formula (I) according to the present invention being suitable pharmaceutical agents are those wherein Ar1 and Ar2 are independently from each other substituted or unsubstituted aryl or heteroaryl groups, X is O or S, preferably O; R1 is hydrogen or a C1-C6-alkyl group, or R1 forms a substituted or unsubstituted 5-6-membered saturated or unsaturated ring with Ar1; n is an integer from 0 to 5, preferably between 1-3 and most preferred 1; Y within formula (I) is an unsubstituted or a substituted 4-12-membered saturated cyclic or bicyclic alkyl which is substituted with at least one ionizable moiety to which a lipophilic chain is attached and which is containing at least one nitrogen atom, whereby one nitrogen atom within said ring is forming a bond with the sulfonyl group of formula (I) thus providing a sulfonamide.

Pharmaceutically active benzsulfonamide derivatives as inhibitors of protein junkinases

Abstract: The present invention is related to benzsulfonamide derivatives of formula I notably for use as pharmaceutically active compounds, as well as to pharmaceutical formulations containing such benzsulfonamide derivatives. Said benzsulfonamide derivatives are ef-ficient modulators of the JNK pathway, they are in particular efficient and selective in-hibitors of JNK 2 and 3. The present invention is furthermore related to novel benzsul-fonamide derivatives as well as to methods of their preparation (I). The compounds of formula I according to the present invention being suitable pharma-ceutical agents are those wherein Ar1 is a substituted or unsubstituted aryl or heteroaryl group.X is O or S, preferably O.R1 is hydrogen or a C1-C6-alkyl group, preferably H.R2 is hydrogen, -COOR3, -CONR3R3', OH, a C1-C4 alkyl substituted with an OH group, a hydrazido carbonyl group, a sulfate, a sulfonate, an amine or an ammonium salt; n is either 0 or 1, preferably 1.

Pharmaceutically active hydrophilic sulfonamide derivatives as inhibitors of protein junkinases

Abstract: The present invention is related to substantially hydrophilic sulfonamide derivatives, or sulfonamide derivatives having a substantially hydrophilic moiety, of formula (I) notably for use as pharmaceutically active compounds, as well as to pharmaceutical formula-tions containing such sulfonamide derivatives. Said sulfonamide derivatives are effi-cient modulators of the JNK pathway, they are in particular efficient and selective in-hibitors of JNK 3. The present invention is furthermore related to novel sulfonamide derivatives as well as to methods of their preparation. The compounds of formula (I) according to the present invention being suitable pharma-ceutical agents are those wherein Ar1 is a substituted or unsubstituted aryl or heteroaryl; Ar2 is an aryl or heteroaryl group carrying at least one hydrophilic substituent;X is O or S, preferably O; R1 is hydrogen or a C?1?-C6-alkyl group, or R?1? forms a substituted or unsubstituted 5-6-membered saturated or unsaturated ring with Ar1; n is an integer from 0 to 5, preferably between 1-3 and most preferred 1; Y within formula (I) is an unsubstituted or a substituted 4-12-membered saturated cyclic or bicyclic alkyl containing at least one nitrogen atom, whereby one nitrogen atom within said ring is forming a bond with the sulfonyl group of formula (I) thus providing a sulfonamide.

Pharmaceutically active sulfonamide derivatives bearing both lipophilic and ionisable moieties as inhibitors of Protein Jun-kinases

Abstract: The present invention is related to sulfonamide derivatives having a lipophilic moiety and which are substantially soluble under physiological conditions. Said compounds are notably for use as pharmaceutically active compounds. The present invention also related to pharmaceutical formulations containing such sulfonamide derivatives. Said sulfonamide derivatives are efficient modulators of the JNK pathway, they are in particular efficient and selective inhibitors of JNK 2 and 3. The present invention is furthermore related to novel sulfonamide derivatives as well as to methods of their preparation. The compounds of formula I according to the present invention being suitable pharmaceutical agents are those wherein Ar and Ar are independently from each other substituted or unsubstituted aryl or heteroaryl groups, X is O or S, preferably O; R is hydrogen or a C1-C6-alkyl group, or R forms a substituted or unsubstituted 5-6-membered saturated or unsaturated ring with Ar ; n is an integer from 0 to 5, preferably between 1-3 and most preferred 1; Y within formula I is an unsubstituted or a substituted 4-12-membered saturated cyclic or bicyclic alkyl which is substituted with at least one ionisable moiety to which a lipophilic chain is attached and which is containing at least one nitrogen atom, whereby one nitrogen atom within said ring is forming a bond with the sulfonyl group of formula I thus providing a sulfonamide.ring is forming a bond with the sulfonyl group of formula I thus providing a sulfonamide.