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Amadacycline methanesulfonate

Tetracycline antibiotic CAS# 1196800-40-4

Amadacycline methanesulfonate

Catalog No. BCC1356----Order now to get a substantial discount!

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Quality Control of Amadacycline methanesulfonate

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Chemical structure

Amadacycline methanesulfonate

3D structure

Chemical Properties of Amadacycline methanesulfonate

Cas No. 1196800-40-4 SDF Download SDF
PubChem ID 74891320 Appearance Powder
Formula C30H44N4O10S M.Wt 652.76
Type of Compound N/A Storage Desiccate at -20°C
Synonyms PTK 0796 mesylate; Amadacycline mesylate
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
Chemical Name (4S,4aS,5aR,12aR)-4,7-bis(dimethylamino)-9-[(2,2-dimethylpropylamino)methyl]-1,10,11,12a-tetrahydroxy-3,12-dioxo-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide;methanesulfonic acid
SMILES CC(C)(C)CNCC1=CC(=C2CC3CC4C(C(=O)C(=C(C4(C(=O)C3=C(C2=C1O)O)O)O)C(=O)N)N(C)C)N(C)C.CS(=O)(=O)O
Standard InChIKey BRTZQVQPPVIFKG-XGLFQKEBSA-N
Standard InChI InChI=1S/C29H40N4O7.CH4O3S/c1-28(2,3)12-31-11-14-10-17(32(4)5)15-8-13-9-16-21(33(6)7)24(36)20(27(30)39)26(38)29(16,40)25(37)18(13)23(35)19(15)22(14)34;1-5(2,3)4/h10,13,16,21,31,34-35,38,40H,8-9,11-12H2,1-7H3,(H2,30,39);1H3,(H,2,3,4)/t13-,16-,21-,29-;/m0./s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of Amadacycline methanesulfonate

DescriptionOmadacycline mesylate is a new tetracycline antibiotic in the pipeline, which can inhibit the 30s subunit of bacterial ribosome. IC50 Value: N/A Target: Antibacterial in vitro: in vivo: Clinical trial: Phase III Study to Compare the Safety and Efficacy of PTK-0796 in Patients With Complicated Skin and Skin Structure Infection (CSSSI).

References:
[1]. Schmitz J, Holzgrabe U. Amadacyclin - a new tetracycline antibiotic in the pipeline. Pharm Unserer Zeit. 2010 Mar;39(2):94-5.

Amadacycline methanesulfonate Dilution Calculator

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Amadacycline methanesulfonate Molarity Calculator

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Preparing Stock Solutions of Amadacycline methanesulfonate

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 1.532 mL 7.6598 mL 15.3196 mL 30.6391 mL 38.2989 mL
5 mM 0.3064 mL 1.532 mL 3.0639 mL 6.1278 mL 7.6598 mL
10 mM 0.1532 mL 0.766 mL 1.532 mL 3.0639 mL 3.8299 mL
50 mM 0.0306 mL 0.1532 mL 0.3064 mL 0.6128 mL 0.766 mL
100 mM 0.0153 mL 0.0766 mL 0.1532 mL 0.3064 mL 0.383 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on Amadacycline methanesulfonate

Description: IC50 Value: N/A Amadacyclin is a new tetracycline antibiotic in the pipeline, which can inhibit the 30s subunit of bacterial ribosome. in vitro: in vivo: Clinical trial: Phase III Study to Compare the Safety and Efficacy of PTK-0796 in Patients With Complicated Skin and Skin Structure Infection (CSSSI).

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References on Amadacycline methanesulfonate

Feedback regulation of methyl methanesulfonate and ultraviolet-sensitive gene clone 81 via ATM/Chk2 pathway contributes to the resistance of MCF-7 breast cancer cells to cisplatin.[Pubmed:28347251]

Tumour Biol. 2017 Mar;39(3):1010428317694307.

The methyl methanesulfonate and ultraviolet-sensitive gene clone 81 protein is a structure-specific nuclease that plays important roles in DNA replication and repair. Knockdown of methyl methanesulfonate and ultraviolet-sensitive gene clone 81 has been found to sensitize cancer cells to chemotherapy. However, the underlying molecular mechanism is not well understood. We found that methyl methanesulfonate and ultraviolet-sensitive gene clone 81 was upregulated and the ATM/Chk2 pathway was activated at the same time when MCF-7 cells were treated with cisplatin. By using lentivirus targeting methyl methanesulfonate and ultraviolet-sensitive gene clone 81 gene, we showed that knockdown of methyl methanesulfonate and ultraviolet-sensitive gene clone 81 enhanced cell apoptosis and inhibited cell proliferation in MCF-7 cells under cisplatin treatment. Abrogation of ATM/Chk2 pathway inhibited cell viability in MCF-7 cells in response to cisplatin. Importantly, we revealed that ATM/Chk2 was required for the upregulation of methyl methanesulfonate and ultraviolet-sensitive gene clone 81, and knockdown of methyl methanesulfonate and ultraviolet-sensitive gene clone 81 resulted in inactivation of ATM/Chk2 pathway in response to cisplatin. Meanwhile, knockdown of methyl methanesulfonate and ultraviolet-sensitive gene clone 81 activated the p53/Bcl-2 pathway in response to cisplatin. These data suggest that the ATM/Chk2 may promote the repair of DNA damage caused by cisplatin by sustaining methyl methanesulfonate and ultraviolet-sensitive gene clone 81, and the double-strand breaks generated by methyl methanesulfonate and ultraviolet-sensitive gene clone 81 may activate the ATM/Chk2 pathway in turn, which provide a novel mechanism of how methyl methanesulfonate and ultraviolet-sensitive gene clone 81 modulates DNA damage response and repair.

Validation of a colistin plasma concentration breakpoint as a predictor of nephrotoxicity in patients treated with colistin methanesulfonate.[Pubmed:28128096]

Int J Antimicrob Agents. 2016 Dec;48(6):725-727.

Nephrotoxicity limits the effective use of colistin for the treatment of multidrug-resistant Gram-negative bacteria (MDR-GNB) infections. We previously defined a steady-state colistin plasma concentration (Css) of 2.42 mg/L that predicted nephrotoxicity at end of treatment (EOT). The objective of this study was to validate this breakpoint in a prospective cohort. This was a multicentre, prospective, observational study conducted at three hospitals with a cohort of patients treated for MDR-GNB infection with colistin methanesulfonate from September 2011 until January 2015. Nephrotoxicity was evaluated at Day 7 and at EOT using the RIFLE criteria. Css values were measured and analysed using HPLC. Taking the previously defined breakpoint for colistin concentration as a criterion, patients were divided into two groups (Css, 2.42 mg/L). Sixty-four patients were included. Seven patients (10.9%) had a Css > 2.42 mg/L and were compared with the remaining patients. Bivariate analysis showed that patients with a Css > 2.42 mg/L were older and had a significantly higher incidence of nephrotoxicity at Day 7 and EOT. Although not statistically significant, nephrotoxicity occurred earlier in these patients (6.2 days vs. 9.2 days in patients with lower Css; P = 0.091). Multivariate analysis of nephrotoxicity showed that Css > 2.42 mg/L was the only predictive factor. Nephrotoxicity was more frequent and occurred earlier in patients with colistin plasma concentrations higher than the previously defined breakpoint (2.42 mg/L). Colistin therapeutic drug monitoring should be routinely considered to avoid reaching this toxicity threshold and potential clinical consequences.

Contribution of ATM and ATR kinase pathways to p53-mediated response in etoposide and methyl methanesulfonate induced DNA damage.[Pubmed:28195382]

Environ Mol Mutagen. 2017 Mar;58(2):72-83.

p53 is a key integrator of cellular response to DNA damage, supporting post-translational repair and driving transcription-mediated responses including cell cycle arrest, apoptosis, and repair. DNA damage sensing kinases recognize different types of DNA damage and initiate specific responses through various post-translational modifications of p53. This study evaluated chemical specificity of the p53 pathway response by manipulating p53 or its upstream kinases and assessing the effect on DNA damage and cellular responses to prototype chemicals: etoposide (ETP, topoisomerase II inhibitor) and methyl methane sulfonate (MMS, alkylating agent). p53-deficient cells demonstrated reduced accumulation of the p53 target proteins MDM2, p21, and Wip1; reduced apoptotic response; and increased DNA damage (p-H2AX and micronuclei) with both chemicals. However, p53 was not essential for cell cycle arrest in HT1080 or HCT116 cells. The two chemicals induced different patterns of kinase activation, particularly in terms of Chk 1, Chk 2, p38, and ERK 1/2. However, inhibition of the ATM pathway showed a greater effect on p53 activtation, apoptosis, and accumulation of DNA damage than ATR-Chk 1 or the MAP kinases regardless of the chemical used. These results indicate that ATM is the predominant upstream kinase responsible for activation of the p53-mediated DNA damage response for both MMS and ETP, though the downstream kinase response is markedly different. Environ. Mol. Mutagen. 58:72-83, 2017. (c) 2017 Wiley Periodicals, Inc.

Characterization of Pph3-mediated dephosphorylation of Rad53 during methyl methanesulfonate-induced DNA damage repair in Candida albicans.[Pubmed:28183985]

Biochem J. 2017 Mar 23;474(7):1293-1306.

Genotoxic stress causes DNA damage or stalled DNA replication and filamentous growth in the pathogenic fungus Candida albicans The DNA checkpoint kinase Rad53 critically regulates by phosphorylation effectors that execute the stress response. Rad53 itself is activated by phosphorylation and inactivated by dephosphorylation. Previous studies have suggested that the phosphatase Pph3 dephosphorylates Rad53. Here, we used mass spectrometry and mutagenesis to identify Pph3 dephosphorylation sites on Rad53 in C. albicans We found that serine residues 351, 461 and 477, which were dephosphorylated in wild-type cells during the recovery from DNA damage caused by methyl methanesulfonate (MMS), remained phosphorylated in pph3Delta/Delta cells. Phosphomimetic mutation of the three residues (rad53-3D) impaired Rad53 dephosphorylation, exit from cell cycle arrest, dephosphorylation of two Rad53 effectors Dun1 and Dbf4, and the filament-to-yeast growth transition during the recovery from MMS-induced DNA damage. The phenotypes observed in the rad53-3D mutant also occurred in the pph3Delta/Delta mutant. Together, our findings reveal a molecular mechanism by which Pph3 controls DNA damage response in C. albicans.

Description

Omadacycline mesylate is a new tetracycline antibiotic in the pipeline, which can inhibit the 30s subunit of bacterial ribosome.

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