Aplysia californica mediated cyclisation of novel 3′-modified NAD + analogues: a role for hydrogen bonding in the recognition of cyclic adenosine 5′-diphosphate ribose
摘要:
Cyclic ADP-ribose mobilizes intracellular Ca2+ in a variety of cells. To elucidate the nature of the interaction between the C3' substituent of cADP-ribose and the cADPR receptor, three analogues of NAD(+) modified in the adenosine ribase (xyloNAD(+) 3'F-xyloNAD(+) and 3'F-NAD(+) were chemically synthesised from D-xylose and adenine starting materials. 3'F-NAD(+) was readily converted to cyclic 3'F-ADP ribose by the action of the cyclase enzyme derived from the mollusc Aplysia californica. XyloNAD(+) and 3'F-xyloNAD(+) were cyclised only reluctantly and in poor yield to afford unstable cyclic products. Biological evaluation of cyclic 3'F-ADP ribose for calcium release in sea urchin egg homogenate gave an EC50 of 1.5 +/- 0.5 muM. This high value suggests that the ability of the C3' substituent to donate a hydrogen bond is crucial for agonism. (C) 2003 Elsevier Ltd. All rights reserved.
Aplysia californica mediated cyclisation of novel 3′-modified NAD + analogues: a role for hydrogen bonding in the recognition of cyclic adenosine 5′-diphosphate ribose
摘要:
Cyclic ADP-ribose mobilizes intracellular Ca2+ in a variety of cells. To elucidate the nature of the interaction between the C3' substituent of cADP-ribose and the cADPR receptor, three analogues of NAD(+) modified in the adenosine ribase (xyloNAD(+) 3'F-xyloNAD(+) and 3'F-NAD(+) were chemically synthesised from D-xylose and adenine starting materials. 3'F-NAD(+) was readily converted to cyclic 3'F-ADP ribose by the action of the cyclase enzyme derived from the mollusc Aplysia californica. XyloNAD(+) and 3'F-xyloNAD(+) were cyclised only reluctantly and in poor yield to afford unstable cyclic products. Biological evaluation of cyclic 3'F-ADP ribose for calcium release in sea urchin egg homogenate gave an EC50 of 1.5 +/- 0.5 muM. This high value suggests that the ability of the C3' substituent to donate a hydrogen bond is crucial for agonism. (C) 2003 Elsevier Ltd. All rights reserved.
TSLP promotes immune evasion and persistence of viruses
申请人:Institut Curie
公开号:EP2213682A1
公开(公告)日:2010-08-04
The invention relates to the treatment or prevention of a chronic viral infection with a Thymic Stromal Lymphopoietin (TSLP) antagonist thereby avoiding immune evasion and persistence of the virus. The invention also provides a method of prognosing the evolution of a cervical dysplasia by TSLP expression in a sample of said cervical dysplasia.
TSLP PROMOTES IMMUNE EVASION AND PERSISTENCE OF VIRUSES
申请人:Institut Curie
公开号:EP2391649A1
公开(公告)日:2011-12-07
Pathway Analysis of Cell Culture Phenotypes and Uses Thereof
申请人:Melville Mark
公开号:US20090186358A1
公开(公告)日:2009-07-23
The present invention provides methods for systematically identifying genes, proteins and/or related pathways that regulate or indicative of cell phenotypes. The present invention further provides methods for manipulating the identified genes, proteins and/or pathways to engineer improved cell lines and/or to evaluate or select cell lines with desirable phenotypes.
[EN] TSLP PROMOTES IMMUNE EVASION AND PERSISTENCE OF VIRUSES<br/>[FR] LA TSLP FAVORISE L'ÉVASION IMMUNITAIRE ET LA PERSISTANCE DE VIRUS
申请人:INST CURIE
公开号:WO2010086445A1
公开(公告)日:2010-08-05
The invention relates to the treatment or prevention of a chronic viral infection with a Thymic Stromal Lymphopoietin (TSLP) antagonist thereby avoiding immune evasion and persistence of the virus. The invention also provides a method of prognosing the evolution of a cervical dysplasia by TSLP expression in a sample of said cervical dysplasia.
Aplysia californica mediated cyclisation of novel 3′-modified NAD + analogues: a role for hydrogen bonding in the recognition of cyclic adenosine 5′-diphosphate ribose
作者:Christopher J.W Mort、Marie E Migaud、Antony Galione、Barry V.L Potter
DOI:10.1016/j.bmc.2003.10.012
日期:2004.1
Cyclic ADP-ribose mobilizes intracellular Ca2+ in a variety of cells. To elucidate the nature of the interaction between the C3' substituent of cADP-ribose and the cADPR receptor, three analogues of NAD(+) modified in the adenosine ribase (xyloNAD(+) 3'F-xyloNAD(+) and 3'F-NAD(+) were chemically synthesised from D-xylose and adenine starting materials. 3'F-NAD(+) was readily converted to cyclic 3'F-ADP ribose by the action of the cyclase enzyme derived from the mollusc Aplysia californica. XyloNAD(+) and 3'F-xyloNAD(+) were cyclised only reluctantly and in poor yield to afford unstable cyclic products. Biological evaluation of cyclic 3'F-ADP ribose for calcium release in sea urchin egg homogenate gave an EC50 of 1.5 +/- 0.5 muM. This high value suggests that the ability of the C3' substituent to donate a hydrogen bond is crucial for agonism. (C) 2003 Elsevier Ltd. All rights reserved.