27-12-2018 дата публикации
Номер: US20180371643A1
Принадлежит:
The present invention relates to an in-silico method for identification of enzymatic reaction targets and combinations thereof useful in cancer therapy. Further, the present invention relates to combinatorial targeting of essential metabolites and reactions associated with glioblastoma survival. The present invention provides a way to prevent or treat glioblastoma by regulating/inhibiting a combination of glycine transporter along with one or more enzymes catalyzing the internal glycine serine metabolism. 1. An in-silico method for identifying essential metabolite and combinatorial target reaction associated with inhibition or suppression of glioblastoma cell growth , comprising:(a) providing data retrieved from biological database and literature relating to reactions in metabolic pathways associated with glioblastoma metabolism to construct an astrocyte/glioblastoma metabolism model in a computer readable storage medium;{'sub': lb', 'ub, '(b) simulating the model obtained in step (a) by constraining fluxes through said reactions in metabolic pathways as per reversibility and irreversibility of reactions, wherein reversible reactions were bound in range of v=−1000 and v=1000 and for irreversible reactions the model is bound either from 0 to 1000 or 1000 to 0;'} [ {'br': None, 'i': adp[m]+pi[m]+', 'h+[i]', 'h', 'o[m]+atp[m]+', 'h+[m], 'ATPSyn=4 ->23 \u2003\u2003 [Eq. (i)]'}, '(i) ATP synthesis through oxidative phosphorylation (ATPSyn)'}, {'br': None, 'i': oaa[m]+glt[c]+r', 'p[c]+succ[m], 'GBM_BM=5\u2003\u2003 [Eq. (ii)];'}, '(ii) a metabolic demand reaction], '(c) defining at least one flux distribution that increases or decreases the objective functions defined for the network, one of which accounts for the ATP requirement of the network and the other comprising ribose-5-phosphate (r5p), oxaloacetate (oaa), succinate (succ) and glutathione (glt), when a constraint is applied to the astrocyte/glioblastoma metabolism model, wherein said objective functions comprises ...
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