2'-Deoxycytidine hydrochloride - CAS 3992-42-5
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Not Intended for Therapeutic Use. For research use only.
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2'-Deoxyguanosine HCl is composed of the purine nucleoside guanine linked by its N9 nitrogen to the C1 carbon of deoxyribose.
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2'-Deoxycytidine monohydrochloride; Deoxycytidine hydrochloride; NSC 83251
1.Detection and separation of nucleoside-5'-monophosphates of DNA by conjugation with the fluorescent dye BODIPY and capillary electrophoresis with laser-induced fluorescence detection.
Cornelius M1, Wörth CG, Kliem HC, Wiessler M, Schmeiser HH. Electrophoresis. 2005 Jun;26(13):2591-8.
We investigated the separation and detection of the 5'-monophosphates of 2'-deoxynucleosides selectively conjugated with 4,4-difluoro-5,7-dimethyl-4-bora-3a,4a-diaza-s-indacene-3-propionyl ethylene diamine hydrochloride (BODIPY FL EDA) at the 5'-phosphate group using capillary electrophoresis with laser-induced fluorescence detection (CE-LIF). BODIPY conjugates of the four common deoxynucleoside-5'-monophosphates (2'-deoxyguanosine-5'-monophosphate, 2'-deoxyadenosine-5'-monophosphate, 2'-deoxycytidine-5'-monophosphate, and thymidine-5'-monophosphate) were prepared and subjected to CE-LIF to serve as standard compounds for peak assignment and to develop separation conditions for the analysis of DNA. BODIPY conjugates were detected and resolved by CE-LIF after digestion of DNA or an oligonucleotide to 5'-monophosphates by nuclease P1 (NP 1) and fluorescence labeling without further purification step. Comparative analyses of calf-thymus DNA digested either with micrococcal nuclease/spleen phosphodiesterase to 3'-monophosphates or with NP 1 to 5'-monophosphates showed that both versions of the fluorescence postlabeling assay were equally efficient and sensitive.
2.Enhancement of chemotherapeutic efficacy in hypermethylator breast cancer cells through targeted and pharmacologic inhibition of DNMT3b.
Sandhu R1, Rivenbark AG, Coleman WB. Breast Cancer Res Treat. 2012 Jan;131(2):385-99. doi: 10.1007/s10549-011-1409-2. Epub 2011 Feb 27.
A subset of primary breast cancers and breast cancer cell lines express a hypermethylation defect (characterized by DNMT hyperactivity and DNMT3b overexpression) which contributes to chemotherapy resistance and provides a target for development of new treatment strategies. The objective of the current study was to determine if targeting the epigenome enhances the sensitivity of breast cancer cells to cytotoxic chemotherapy. Hypermethylator breast cancer cell lines (MDA-MB-453, BT549, and Hs578T) were treated with 250 or 500 nM 5-aza-2'-deoxycytidine (5-aza) and/or were subjected to RNAi-mediated DNMT3b knockdown (KD), and then tested for sensitivity to doxorubicin hydrochloride (DOX), paclitaxel (PAX), and 5-fluorouracil (5-FU). In MDA-MB-453 cells, DNMT3b KD reduces the IC(50) for DOX from 0.086 to 0.048 μM (44% reduction), for PAX from 0.497 to 0.376 nM (24%), and for 5-FU from 0.817 to 0.145 mM (82%). Treatment with 250 nM 5-aza for 7 days did not increase the efficacy of DOX, PAX, or 5-FU, but 7-day treatment with 500 nM 5-aza sensitized cells, reducing the IC(50) for DOX to 0.
3.Altered expression of topoisomerase IIalpha contributes to cross-resistant to etoposide K562/MX2 cell line by aberrant methylation.
Asano T1, Nakamura K, Fujii H, Horichi N, Ohmori T, Hasegawa K, Isoe T, Adachi M, Otake N, Fukunaga Y. Br J Cancer. 2005 Apr 25;92(8):1486-92.
KRN 8602 (MX2) is a novel morpholino anthracycline derivative having the chemical structure 3'-deamino-3'-morpholino-13-deoxo-10-hydroxycarminomycin hydrochloride. To investigate the mechanisms of resistance to MX2, we established an MX2-resistant phenotype (K562/MX2) of the human myelogeneous leukaemia cell line (K562/P), by continuously exposing a suspension culture to increasing concentrations of MX2. K562/MX2 cells were more resistant to MX2 than the parent cells, and also showed cross-resistance to etoposide and doxorubicin. Topoisomerase (Topo) IIalpha protein levels in K562/MX2 cells were lower of those in K562/P cells on immunoblot analysis and decreased expression of Topo IIalpha mRNA was seen in K562/MX2 cells. Topoisomerase II catalytic activity was also reduced in the nuclear extracts from K562/MX2 cells when compared with K562/P cells. Aberrant methylated CpG of Topo IIalpha gene was observed in K562/MX2 cells when compared with the parent line on methylation-specific restriction enzyme analysis.
4.One-pot two-step enzymatic coupling of pyrimidine bases to 2-deoxy-D-ribose-5-phosphate. A new strategy in the synthesis of stable isotope labeled deoxynucleosides.
Ouwerkerk N1, Steenweg M, de Ruijter M, Brouwer J, van Boom JH, Lugtenburg J, Raap J. J Org Chem. 2002 Mar 8;67(5):1480-9.
The enzymatic synthesis of thymidine from 2-deoxy-D-ribose-5-phosphate is achieved, in a one-pot two-step reaction using phosphoribomutase (PRM) and commercially available thymidine phosphorylase (TP). In the first step the sugar-5-phosphate is enzymatically rearranged to alpha-2-deoxy-D-ribose-1-phosphate. Highly active PRM is easily obtained from genetically modified overproducing E. coli cells (12,000 units/84 mg protein) and is used without further purification. In the second step thymine is coupled to the sugar-1-phosphate. The thermodynamically unfavorable equilibrium is shifted to the product by addition of MnCl(2) to precipitate inorganic phosphate. In this way the overall yield of the beta-anomeric pure nucleoside increases from 14 to 60%. In contrast to uracil, cytosine is not accepted by TP as a substrate. Therefore, 2'-deoxy-cytidine is obtained by functional group transformations of the enzymatically prepared 2'-deoxy-uridine.
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CAS 3992-42-5 2'-Deoxycytidine hydrochloride

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