- COMPOSITIONS AND METHODS FOR THERAPY OF PROSTATE CANCER USING DRUG COMBINATIONS TO TARGET POLYAMINE BIOSYNTHESIS AND RELATED PATHWAYS
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Provided are compositions and methods for treating prostate conditions. The methods involve administering to an individual in need thereof a composition that contains i) an inhibitor of methionine salvage pathway in prostate of the individual and ii) a polyamine analogue. The methods are for use in individuals who have been diagnosed with, or are suspected of having or at risk for developing androgen sensitive prostate cancer (AS-CaP), or Castration recurrent CaP (CR-CaP), or benign prostate hyperplasia (BPH). The disclosure includes use of inhibitors of methylthioadenosine phosphorylase (MTAP), and a polyamine analog that upregulates polyamine catabolism by increasing spermidine/spermine Nl -acetyl transferase (SAT1) activity, such as methylthio-DADMe-Immucillin (MTDIA), andl),N(11)-bisethylnorspermine (BENSpm), respectively. Pharmaceutical formulations that contain a combination of the inhibitor of the methionine salvage pathway and a polyamine analogue are included, as are kits that contain such agents.
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- Tight binding enantiomers of pre-clinical drug candidates
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MTDIA is a picomolar transition state analogue inhibitor of human methylthioadenosine phosphorylase and a femtomolar inhibitor of Escherichia coli methylthioadenosine nucleosidase. MTDIA has proven to be a non-toxic, orally available pre-clinical drug candidate with remarkable anti-tumour activity against a variety of human cancers in mouse xenografts. The structurally similar compound MTDIH is a potent inhibitor of human and malarial purine nucleoside phosphorylase (PNP) as well as the newly discovered enzyme, methylthioinosine phosphorylase, isolated from Pseudomonas aeruginosa. Since the enantiomers of some pharmaceuticals have revealed surprising biological activities, the enantiomers of MTDIH and MTDIA, compounds 1 and 2, respectively, were prepared and their enzyme binding properties studied. Despite binding less tightly to their target enzymes than their enantiomers compounds 1 and 2 are nanomolar inhibitors.
- Evans, Gary B.,Cameron, Scott A.,Luxenburger, Andreas,Guan, Rong,Suarez, Javier,Thomas, Keisha,Schramm, Vern L.,Tyler, Peter C.
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p. 5326 - 5333
(2015/11/11)
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- SALT AND POLYMORPHIC FORMS OF (3R,4S)-L-((4-AMINO-5H-PYRROLO[3,2-D]PYRIMIDIN-7-YL)METHYL)-4(METHYLTHIOMETHYL)PYRODIN-3-OL(MTDIA)
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The invention relates to salt forms of (3R,4S)-1-((4-amino-5H-pyrrolo[3,2-d]pyrimidin-7-yl)methyl)-4-(methylthiomethyl)pyrrolidin-3-ol, as well as polymorphic forms of the salts. The invention further relates to processes for preparing the salt forms and to the use of the salt forms in the treatment of diseases and disorders where it is desirable to inhibit 5'-methylthioadenosine phosphorylase (MTAP).
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- Second generation transition state analogue inhibitors of human 5′-methylthioadenosine phosphorylase
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The polyamine biosynthetic pathway is a therapeutic target for proliferative diseases because cellular proliferation requires elevated levels of polyamines. A byproduct of the synthesis of spermidine and spermine is 5′-methylthioadenosine (MTA). In humans
- Evans, Gary B.,Furneaux, Richard H.,Lenz, Dirk H.,Painter, Gavin F.,Schramm, Vern L.,Singh, Vipender,Tyler, Peter C.
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p. 4679 - 4689
(2007/10/03)
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- INHIBITORS OF NUCLEOSIDE PHOSPHORYLASES AND NUCLEOSIDASES
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The present invention relates to compounds of the general formula (I) which are inhibitors of purine muclioside phosphorylases (PNP), purine phosphoribosyltransferases (PPRT), 5'-methylthioadenosine phosphorylases (MTAP), 5'-methylthioadenosine mucliosidases (MTAN) and/or nucleoside hydrolases (NH). The invention also relates to the use of these compounds in the treatment of diseases and infections including cancer, bacterial infections, protozoal infections, and T-cell mediated disease and to pharmaceutical compositions containing the compounds
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