XDS-23
XDS-23 is a selective biofilm inhibitor with an IC50 of 1.26 µM against Pseudomonas aeruginosa. XDS-23 exerts a dual inhibitory effect on the LasI/LasR System (las) and Pseudomonas Quinolone Signal System (pqs). XDS-23 suppress the production of key virulence factors including elastase, pyocyanin, and extracellular polysaccharides. XDS-23 exhibits synergistic antibacterial activity and can enhance the efficacy of multiple antibiotics in both in vitro and in vivo models, while maintaining a favorable safety profile. XDS-23 can be employed for research in combating biofilm-mediated drug-resistant P. aeruginosa infections.
For research use only. We do not sell to patients.
- Formula: C15H16ClNO4
- Molecular Weight:309.74
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
XDS-23 (0.3125-5 μM, 24 h) inhibits biofilm formation in P. aeruginosa PAO1, reducing biofilm biomass by up to 60 % (at 5 µM), diminishing viable cell counts within the biofilm without affecting planktonic growth, and concurrently suppressing exopolysaccharide (EPS) synthesis by 50% at the same concentration, ultimately leading to thinner and structurally disrupted biofilms[1].
XDS-23 (0.3125-5 μM, 20 and 24 h) inhibits pyocyanin and elastase production in a concentration-dependent manner, resulting in a significant inhibition of 70 % and 50 % at 5 μM, respectively, in P. aeruginosa PAO1[1].
XDS-23 (0.3125-5 μM, 24 h) demonstrates broad-spectrum activity against clinically resistant P. aeruginosa isolates, achieving significant inhibition in multiple strains, including nearly 50% inhibition in PA0617 and PA1065, and 44.87%, 34.89%, 33.56%, and 36.80% inhibition in PA0808, PA1129, PA1074, and PA1167, respectively[1].
XDS-23 (0.3125-5 μM, 20 h) decreases the secretion of pyocyanin in all clinical isolates of P.aeruginosa except PA1031, for PA0808, PA0617, and PA1074, it resulted in exceeding 30 % inhibition[1].
XDS-23 (0.3125-5 μM, 24 h) reduces biofilm formation and virulence primarily by inhibiting the las and pqs systems in P. aeruginosa PAO1[1].
XDS-23 (5 μM, 24 h) concentration-dependently suppresses motilities of P. Aeruginosa, inhibiting swarming (by 60% at 5 μM), inhibiting twitching (by 50%), and attenuating swimming (by 30%)[1].
XDS-23 (0.3125-5 μM, 24 h) reduces the bacterial load when co-administered with Polymyxin B (PMB) (HY-149179), Ciprofloxacin (CIP) (HY-B0356), Ceftazidime (CAZ) (HY-B0593), and Tobramycin (Tob) (HY-B0441) in P. aeruginosa PAO1 [1].
XDS-23 (6.25-100 μM, 24 h) has no significant cytotoxicity in human hepatocyte-derived HepG2 cells[1].
XDS-23 (1.25-40 μM, 4 h) exhibits negligible hemolytic activity against rabbit erythrocytes[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
XDS-23 (0.052 mg/kg, Inject into the hemocoel (i.h.), once) improves the efficacy of Polymyxin B, Ciprofloxacin, Ceftazidime, and Tobramycin in P. aeruginosa PAO1-induced G. mellonella larvae[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:G. mellonella larvae[1]
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Dosage:6.25, 12.5, 25, 50, and 100 μM in 5 μL
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Administration:microinjected in the last proleg, once
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Result:Resulted in 100 % survival across all groups
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Animal Model:G. mellonella larvae[1]
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Dosage:0.052 mg/kg
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Administration:microinjected in the last proleg, once
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Result:Exerted anti-biofilm and anti-virulence properties, which resulted in higher survival rates compared to the corresponding antibiotic monotherapies.
Enhanced the survival rate to 90% in combination with polymyxin B (0.33 mg/kg).
Increased the survival rates by 50% and 40% in combination with ciprofloxacin (0.033 mg/kg) or ceftazidime (1.67 mg/kg).
Achieved a 30% survival rate combination with tobramycin (0.083 mg/kg).
Chemical Information
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Molecular Weight 309.74
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Formula C15H16ClNO4
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SMILES
CCCCNC(COC(C1=CC(Cl)=CC=C1O2)=CC2=O)=O
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)