Tag: 100-200

Product Details of 129075-56-5On October 31, 1995 ,《Potentiation of temozolomide-induced cytotoxicity: A comparative study of the biological effects of poly(ADP-ribose) polymerase inhibitors》 appeared in British Journal of Cancer. The author of the article were Boulton, S.; Pemberton, L C.; Porteous, J K.; Curtin, N J.; Griffin, R J.; Golding, B T.; Durkacz, B W.. The article conveys some information:

Four poly(ADP-ribose) polymerase (PADPRP) inhibitors [3-aminobenzamide, benzamide, 3,4-dihydro-5-methoxyisoquinolin-1(2H)-one (PD 128763) and 8-hydroxy-2-methylquinazolin-4(3H)-one (NU1025)] were compared with respect to their effects on a number of biol. end points. The following parameters were assessed: their ability to inhibit the enzyme in permeabilized L1210 cells; their ability to potentiate the cytotoxicity of temozolomide (including the cytotoxicity of the compounds per se); their ability to increase net levels of temozolomide-induced DNA strand breaks and inhibit temozolomide-induced NAD depletion. PD 128763 and NU1025 were equipotent as PADPRP inhibitors, and 40- and 50-fold more potent than benzamide and 3-aminobenzamide resp. All the compounds acted in a concentration-dependent manner to potentiate the cytotoxicity and increase DNA strand break levels in cells treated with temozolomide. There was an excellent correlation between the potency of the compounds as PADPRP inhibitors and their effects on cell survival and DNA repair. Temozolomide treatment caused a decrease in cellular NAD levels, and this was abolished by the PADPRP inhibitors. In conclusion, the new generation of PADPRP inhibitors are at least 50-fold more effective than 3-aminobenzamide as chemopotentiators, and can be used at micromolar rather than millimolar concentrations in intact cells. After reading the article, we found that the author used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Product Details of 129075-56-5)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.Product Details of 129075-56-5 Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chatterjee, Satadal; Cheng, Ming-Fang; Berger, Ravi B.; Berger, Sosamma J.; Berger, Nathan A. published an article on February 15 ,1995. The article was titled 《Effect of inhibitors of poly(ADP-ribose) polymerase on the induction of GRP78 and subsequent development of resistance to etoposide》, and you may find the article in Cancer Research.Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one The information in the text is summarized as follows:

The authors have recently demonstrated that cell lines deficient in poly(ADP-ribose) synthesis due to deficiency in the enzyme poly(ADP-ribose) polymerase (PADPRP) or depletion of its substrate NAD+ overexpress GRP78. Furthermore, this overexpression of GRP78 is associated with the acquisition of resistance to topoisomerase II-directed drugs such as etoposide (VP-16); (S. Chatterjee et al., Cancer Res., 54: 4405-4411, 1994). Thus, the authors studies suggest that interference with NAD+-PADPRP metabolism could provide an important approach to (a) define pathways of GRP78 induction, (b) study of the effect of GRP78 on other cellular processes, (c) elucidate the mechanism of GRP78-dependent resistance to topoisomerase II targeted drugs, and (d) modulate responses to chemotherapy in normal and tumor tissues. However, in the in vivo situation, it is impractical to interfere with NAD+-PADPRP metabolism by mutational inactivation of PADPRP or by depletion of its substrate NAD+. Therefore, the authors have examined several inhibitors of NAD+-PADPRP metabolism including 3-aminobenzamide, PD128763, and 6-aminonicotinamide for their ability to reproduce the results obtained with cell lines deficient in NAD+-PADPRP metabolism relative to the induction of GRP78 and subsequent development of resistance to VP-16. The authors studies show that 6-aminonicotinamide treatment is highly effective in the induction of GRP78 and subsequent development of resistance to VP-16, whereas treatment with 3-aminobenzamide or PD128763 does not induce GRP78 and thus does not result in VP-16 resistance. The results came from multiple reactions, including the reaction of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

COA of Formula: C10H11NOOn October 31, 1999 ,《Pharmacologic disruption of base excision repair sensitizes mismatch repair-deficient and -proficient colon cancer cells to methylating agents》 appeared in Clinical Cancer Research. The author of the article were Liu, Lili; Taverna, Pietro; Whitacre, Cecilia M.; Chatterjee, Satadal; Gerson, Stanton L.. The article conveys some information:

Previously we showed that a mismatch repair (MMR)-deficient cell line, HCT116 (hMLH1 mut), unlike a MMR wild-type cell line, SW480, was more resistant to the therapeutic methylating agent, temozolomide (TMZ), because the MMR complex fails to recognize TMZ-induced O6-methylguanine DNA adduct mispairings with thymine that arise after replication. TMZ also produces N7-methylguanine and N3-methyladenine adducts that are processed efficiently by the base excision repair (BER) system. After removal of the methylated base by methylpurine glycosylase, which creates the abasic or apurinic-apyrimidinic (AP) site, the phosphodiester bond is hydrolyzed immediately by AP endonuclease, initiating the repair of the AP site. Methoxyamine (MX) reacts with the abasic site and prevents AP endonuclease cleavage, disrupting DNA repair. MX potentiated the cytotoxic effect of TMZ with a dose modification factor (DMF) of 2.3 ± 0.12 in SW480 and 3.1 ± 0.16 in HCT116. When combined with O6-benzylguanine (BG), MX and TMZ dramatically increased TMZ cytotoxicity (65.8-fold) in SW480, whereas no additive effect was seen in HCT116. This suggests that N7-methylguanine and N3-methyladenine adducts are cytotoxic lesions in MMR-deficient and wild-type cells when BER is interrupted. Because poly(ADP-ribose) polymerase (PARP) aids in processing of DNA strand breaks induced during MMR and BER, we asked whether PARP inhibitors would also affect BER-mediated cell killing. We found that PARP inhibitors PD128763, 3-aminobenzamide, and 6-aminonicotinamide increased the sensitivity to TMZ in both HCT116 MMR-deficient cells and SW480 MMR wild-type cells. In HCT116 cells, PD128763 remarkably decreased resistance to TMZ, with a DMF of 4.7 ± 0.2. However, the combination of PD128763, BG, and TMZ had no greater effect, indicating that persistent O6-methylguanine had no effect on cytotoxicity. In SW480, the DMF for TMZ cytotoxicity was 3.1 ± 0.12 with addition of PD128763 and 36 with addition of PD128763 and BG. Synergy anal. by median effect plots indicated a high degree of synergy between TMZ and MX or PD128763. In contrast, 1,3-bis(2-chloroethyl)-1-nitrosourea combined with either MX or PD128763 showed little if any potentiation observed in the absence of BG in either cell line, suggesting that BER pathway has little impact on cytotoxic processing of 1,3-bis(2-chloroethyl)-1-nitrosourea-induced adducts. These studies indicate that targeting BER with MX or PARP inhibitors enhances the cytotoxicity of methylating agents, even in MMR-deficient cells. In the part of experimental materials, we found many familiar compounds, such as 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5COA of Formula: C10H11NO)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.COA of Formula: C10H11NO Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Electric Literature of C9H7ClN2On June 1, 1982, Sawanishi, Hiroyuki; Hirai, Toyoko; Tsuchiya, Takashi published an article in Heterocycles. The article was 《Photolysis of pyridyl, quinolyl, and isoquinolyl azides in hydrohalic acids》. The article mentions the following:

Irradiation of 4-azidopyridine and -quinoline in 6 N HCl or HBr at room temperature gave the corresponding 3-amino-4-halo compound (10-15% yield) and 4-aminopyridine and 4-aminoquinoline (25-35% yield). On the other hand, similar treatment of 4 azidopyridine N-oxide and 4-azidoquinoline N-oxide gave the corresponding 4-amino-3-halo compounds (80-95% yields). Also, similar treatment of 3-azidoquinoline and 4-azidoisoquinoline, both the free bases and the N-oxides, gave results similar to those for 4-azidopyridine N-oxide. Photolysis of 4-azidopyridine and -quinoline occurred through azirine of azacycloheptatetraene intermediates. The photolysis of 4-azidopyridine N-oxide and 4-azidoquinoline N-oxide occurred through nitrenium ion intermediates.3-Chloroisoquinolin-4-amine(cas: 342899-38-1Electric Literature of C9H7ClN2) was used in this study.

3-Chloroisoquinolin-4-amine(cas: 342899-38-1) belongs to isoquinoline.Electric Literature of C9H7ClN2 Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

COA of Formula: C10H11NOOn March 17, 1998, Ruf, Armin; de Murcia, Gilbert; Schulz, Georg E. published an article in Biochemistry. The article was 《Inhibitor and NAD+ Binding to Poly(ADP-ribose) Polymerase As Derived from Crystal Structures and Homology Modeling》. The article mentions the following:

Inhibitors of poly(ADP-ribose) polymerase (PARP, EC 2.4.2.30) are of clin. interest because they have potential for improving radiation therapy and chemotherapy of cancer. The refined binding structures of four such inhibitors are reported together with the refined structure of the unligated catalytic fragment of the enzyme. Following their design, all inhibitors bind at the position of the nicotinamide moiety of the substrate NAD+. The observed binding mode suggests inhibitor improvements that avoid other NAD+-binding enzymes. Because the binding pocket of NAD+ has been strongly conserved during evolution, the homol. with ADP-ribosylating bacterial toxins could be used to extend the bound nicotinamide, which is marked by the inhibitors, to the full NAD+ mol. In addition to this study using 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one, there are many other studies that have used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5COA of Formula: C10H11NO) was used in this study.

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.COA of Formula: C10H11NO Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-oneOn March 31, 2006, Ye, Diana Z.; Tai, Mei-Hui; Linning, Katrina D.; Szabo, Csaba; Olson, L. Karl published an article in Diabetes. The article was 《MafA expression and insulin promoter activity are induced by nicotinamide and related compounds in INS-1 pancreatic β-cells》. The article mentions the following:

Nicotinamide has been reported to induce differentiation of precursor/stem cells toward a β-cell phenotype, increase islet regeneration, and enhance insulin biosynthesis. Exposure of INS-1 β-cells to elevated glucose leads to reduced insulin gene transcription, and this is associated with diminished binding of pancreatic duodenal homeobox factor 1 (PDX-1) and mammalian homolog of avian MafA/L-Maf (MafA). Nicotinamide and other low-potency poly(ADP-ribose) polymerase (PARP) inhibitors were thus tested for their ability to restore insulin promoter activity. The low-potency PARP inhibitors nicotinamide, 3-aminobenzamide, or PD128763 increased expression of a human insulin reporter gene suppressed by elevated glucose. In contrast, the potent PARP-1 inhibitors PJ34 or INO-1001 had no effect on promoter activity. Antioxidants, including N-acetylcysteine, lipoic acid, or quercetin, only minimally induced the insulin promoter. Site-directed mutations of the human insulin promoter mapped the low-potency PARP inhibitor response to the C1 element, which serves as a MafA binding site. INS-1 cells exposed to elevated glucose had markedly reduced MafA protein and mRNA levels. Low-potency PARP inhibitors restored MafA mRNA and protein levels, but they had no affect on PDX-1 protein levels or binding activity. Increased MafA expression by low-potency PARP inhibitors was independent of increased MafA protein or mRNA stability. These data suggest that low-potency PARP inhibitors increase insulin biosynthesis, in part, through a mechanism involving increased MafA gene transcription.5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one) was used in this study.

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline.Name: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ruf, Armin; de Murcia, Josiane Menissier; de Murcia, Gilbert M.; Schulz, Georg E. published an article in Proceedings of the National Academy of Sciences of the United States of America. The title of the article was 《Structure of the catalytic fragment of poly(ADP-ribose) polymerase from chicken》.SDS of cas: 129075-56-5 The author mentioned the following in the article:

The crystal structures of the catalytic fragment of chicken poly(ADP-ribose) polymerase [NAD+ ADP-ribosyltransferase; NAD+:poly(adenosine-diphosphate-D-ribosyl)-acceptor ADP-D-ribosyltransferase, EC 2.4.2.30] with and without a nicotinamide-analog inhibitor have been elucidated. Because this enzyme is involved in the regulation of DNA repair, its inhibitors are of interest for cancer therapy. The inhibitor shows the nicotinamide site and also suggests the adenosine site. The enzyme is structurally related to bacterial ADP-ribosylating toxins but contains an addnl. α-helical domain that is suggested to relay the activation signal issued on binding to damaged DNA. After reading the article, we found that the author used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5SDS of cas: 129075-56-5)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. SDS of cas: 129075-56-5

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

The author of 《Enhancement of alkylating agent activity in vitro by PD 128763, a potent poly(ADP-ribose) synthetase inhibitor》 were Sebolt-Leopold, Judith S.; Scavone, Sylvia V.. And the article was published in International Journal of Radiation Oncology, Biology, Physics in 1992. COA of Formula: C10H11NO The author mentioned the following in the article:

The ability of DNA repair inhibitors to potentiate alkylating agent cytotoxicity was explored with PD 128763, a dihydroisoquinolinone known to effectively inhibit poly(ADP-ribose) synthetase. The cytotoxic activity of streptozotocin in L1210 leukemia cells was maximally potentiated (7-fold decrease in IC50) under conditions of 24 h exposure to PD 128763 following treatment with the alkylating agent for 1 h. Similar treatment conditions resulted in a much greater effect (36-fold enhancement in activity) for the 2-nitroimidazole RSU 1069. In contrast, 3-aminobenzamide was only weakly effective at enhancing activity of either streptozotocin or RSU 1069 (2-3 fold potentiation). However, PD 128763 was ineffective at potentiating the cytotoxicity of the bifunctional alkylating agents carmustine (BCNU) and lomustine (CCNU). These results are consistent with a role for (poly-ADP) ribosylation in the repair of monofunctional alkylating agent damage. This study supports further exploration of the combination of PD 128763 and RSU 1069 as a potentially useful chemotherapeutic regimen. In the experiment, the researchers used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5COA of Formula: C10H11NO)

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. COA of Formula: C10H11NO

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ekhato, I. Victor; Huang, Che C. published an article in Journal of Labelled Compounds and Radiopharmaceuticals. The title of the article was 《Preparation of carbon-14 labeled 3,4-dihydro-5-methyl-1(2H)-isoquinolinone》.Application In Synthesis of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one The author mentioned the following in the article:

Carbon-14 labeled 3,4-dihydro-5-methyl-1(2H)-isoquinolinone (I) a potent inhibitor of poly(ADP-ribose) polymerase (ADPRP) was prepared from 1-bromo-2-methylbenzene in 7.8% overall yield. The C-14 label was introduced from Ba14CO3 via metal-halogen exchange and carboxylation reactions. In addition to this study using 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one, there are many other studies that have used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Application In Synthesis of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one) was used in this study.

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Application In Synthesis of 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

The author of 《9-phenyl acridine: a possible poly (ADP-ribose) polymerase-1 inhibitor》 were Karmakar, Sayantani; Manna, Debashri; Ghosh, Semanti; Hansda, Surajit; Mitra, Anindita; Bagchi, Angshuman; Ghosh, Rita. And the article was published in Journal of Chemical and Pharmaceutical Research in 2017. Recommanded Product: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one The author mentioned the following in the article:

Poly (ADP-ribose) polymerase-1 (PARP1) is involved in DNA repair, its inhibition can potentiate cell killing by different agents. When used in conjunction, inhibitors of PARP1 can sensitize the action of chemotherapeutic agents thus making PARP1 an attractive target for therapeutic intervention in cancer. Docking of 9-Ph acridine (ACPH) with human PARP1 (hPARP1) revealed that ACPH could bind by interacting with the catalytically important amino acids at its NAD+ binding pocket. Its binding free energy was also determined to compare with that of other known inhibitors. Mol. dynamic simulation also established the binding of ACPH at the NAD+ binding pocket and also revealed its interaction with the catalytically important residues. These findings indicated that ACPH can be a potent hPARP1 inhibitor. In cultured A375 cells, post treatment with ACPH could sensitize cells to killing in both exponential and quiescent cells. NAD+ is the substrate for hPARP1 in DNA damaged cells; hence depletion of NAD+ indicates hPARP1 activity. The NAD+ content of treated cells were determined biochem. Post treatment with ACPH prevented NAD+ depletion in the DNA damaged cells confirming its hPARP1 inhibitory activity. Considering the significance of hPARP1 inhibitors not only in cancer therapeutics but in various pathol. conditions, the findings could be noteworthy for new drug development. In addition to this study using 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one, there are many other studies that have used 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5Recommanded Product: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one) was used in this study.

5-Methyl-3,4-dihydroisoquinolin-1(2H)-one(cas: 129075-56-5) belongs to isoquinoline. Isoquinoline is a structural isomer of quinoline, and quinoline derivatives are fused ring compounds of pyridine and benzene rings, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Recommanded Product: 5-Methyl-3,4-dihydroisoquinolin-1(2H)-one

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem