Inhibition of some hepatic lysosomal glycosidases by ethanolamines and phenyl 6-deoxy-6-(morpholin-4-yl)-β-d-glucopyranoside
摘要:
The hepatic lysosomal glycosidases alpha-glucosidase and beta-glucuronidase were inhibited in vitro and in vivo by mono- and diethanolamines. The in vivo inhibition is dose dependent and occurs at a value less than LD50. Phenyl 6-deoxy-6-(morpholin-4-yl)-beta-D-glucopyranoside inhibited alpha-glucosidase both in vitro and in vivo. The treatment of the enzymes in vitro by ethanolamine exhibited a reversible inhibition of the mixed and competitive types for alpha-glucosidase and beta-glucuronidase, respectively. Diethanolamine showed a reversible inhibition of the competitive type for both enzymes. It is a potent inhibitor for beta-glucuronidase, in vitro, whose inhibition constant (K-i) is 5 x 10(-5) M. Phenyl 6-deoxy-6-(morpholin-4-yl)-beta-D-glucopyranoside is a potent inhibitor only for hepatic alpha-glucosidase with a K-i value of 1.6 x 10(-5) M. The pattern of the pH dependence of enzymic activity was not affected by ethanolamine inhibition. The magnitude of the inhibition of enzymes is dependent on the structure of the inhibitor. (C) 1999 Elsevier Science Ltd. All rights reserved.
Inhibition of some hepatic lysosomal glycosidases by ethanolamines and phenyl 6-deoxy-6-(morpholin-4-yl)-β-d-glucopyranoside
摘要:
The hepatic lysosomal glycosidases alpha-glucosidase and beta-glucuronidase were inhibited in vitro and in vivo by mono- and diethanolamines. The in vivo inhibition is dose dependent and occurs at a value less than LD50. Phenyl 6-deoxy-6-(morpholin-4-yl)-beta-D-glucopyranoside inhibited alpha-glucosidase both in vitro and in vivo. The treatment of the enzymes in vitro by ethanolamine exhibited a reversible inhibition of the mixed and competitive types for alpha-glucosidase and beta-glucuronidase, respectively. Diethanolamine showed a reversible inhibition of the competitive type for both enzymes. It is a potent inhibitor for beta-glucuronidase, in vitro, whose inhibition constant (K-i) is 5 x 10(-5) M. Phenyl 6-deoxy-6-(morpholin-4-yl)-beta-D-glucopyranoside is a potent inhibitor only for hepatic alpha-glucosidase with a K-i value of 1.6 x 10(-5) M. The pattern of the pH dependence of enzymic activity was not affected by ethanolamine inhibition. The magnitude of the inhibition of enzymes is dependent on the structure of the inhibitor. (C) 1999 Elsevier Science Ltd. All rights reserved.
The invention provides compositions and methods for inhibiting the growth or proliferation of hyperproliferative cells or inducing regression of hyperproliferative cells. More specifically, the invention provides compositions and methods for stimulating glycogen accumulation in target cells (e.g., hyperproliferative cells) in order to increase glycogen to a level that is toxic to the target cell.
CANCER TREATMENT BY METABOLIC MODULATIONS
申请人:POWNALL SCOTT
公开号:US20090041740A1
公开(公告)日:2009-02-12
The invention provides compositions and methods for inhibiting the growth or proliferation of hyperproliferative cells or inducing regression of hyperproliferative cells. More specifically, the invention provides compositions and methods for stimulating glycogen accumulation in target cells (e.g., hyperproliferative cells) in order to increase glycogen to a level that is toxic to the target cell.
[EN] CANCER TREATMENT BY METABOLIC MODULATIONS<br/>[FR] TRAITEMENT DE CANCER PAR DES MODULATIONS METABOLIQUES
申请人:ENGENE INC
公开号:WO2004039412A2
公开(公告)日:2004-05-13
The invention provides compositions and methods for inhibiting the growth or proliferation of hyperproliferative cells or inducing regression of hyperproliferative cells. More specifically, the invention provides compositions and methods for stimulating glycogen accumulation in target cells (e.g., hyperproliferative cells) in order to increase glycogen to a level that is toxic to the target cell.
Inhibition of some hepatic lysosomal glycosidases by ethanolamines and phenyl 6-deoxy-6-(morpholin-4-yl)-β-d-glucopyranoside
作者:Mahmoud Balbaa、Neama Abdel-Hady、Fatma El-Rashidy、Laila Awad、El-Sayed H. El-Ashry、Richard R. Schmidt
DOI:10.1016/s0008-6215(99)00076-2
日期:1999.4
The hepatic lysosomal glycosidases alpha-glucosidase and beta-glucuronidase were inhibited in vitro and in vivo by mono- and diethanolamines. The in vivo inhibition is dose dependent and occurs at a value less than LD50. Phenyl 6-deoxy-6-(morpholin-4-yl)-beta-D-glucopyranoside inhibited alpha-glucosidase both in vitro and in vivo. The treatment of the enzymes in vitro by ethanolamine exhibited a reversible inhibition of the mixed and competitive types for alpha-glucosidase and beta-glucuronidase, respectively. Diethanolamine showed a reversible inhibition of the competitive type for both enzymes. It is a potent inhibitor for beta-glucuronidase, in vitro, whose inhibition constant (K-i) is 5 x 10(-5) M. Phenyl 6-deoxy-6-(morpholin-4-yl)-beta-D-glucopyranoside is a potent inhibitor only for hepatic alpha-glucosidase with a K-i value of 1.6 x 10(-5) M. The pattern of the pH dependence of enzymic activity was not affected by ethanolamine inhibition. The magnitude of the inhibition of enzymes is dependent on the structure of the inhibitor. (C) 1999 Elsevier Science Ltd. All rights reserved.