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Accessible (Haz class 3, 4, 5 or 8), International USD 200+
Chemical Structure| 944252-63-5 Chemical Structure| 944252-63-5

Structure of Murepavadin
CAS No.: 944252-63-5

Chemical Structure| 944252-63-5

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Murepavadin is the first in class of the outer membrane protein-targeting antibiotics (OMPTA) and a pathogen-specific peptidomimetic antibacterial with a novel, nonlytic mechanism of action targeting Pseudomonas aeruginosa.

Synonyms: POL7080

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Product Details of Murepavadin

CAS No. :944252-63-5
Formula : C73H112N22O16
M.W : 1553.81
SMILES Code : O=C(N[C@@](C(N[C@H](C(N[C@H](C(N[C@@H](C(N[C@H](C(N[C@H](C(N[C@@H](CCN)C(N[C@@H](CCN)C(N[C@@H](C)C(N[C@@H](CO)C(N1[C@@](CCC1)([H])C(N2[C@](CCC2)([H])C(N[C@]([C@H](O)C)([H])C3=O)=O)=O)=O)=O)=O)=O)=O)CC4=CNC5=CC=CC=C45)=O)CCN)=O)CCN)=O)CCCN)=O)CCN)=O)([H])[C@@H](C)CC)[C@](N3)([H])CC6=CNC7=CC=CC=C67
Synonyms :
POL7080
MDL No. :N/A
InChI Key :RIDRXGOBXZLKHZ-NZUANIILSA-N
Pubchem ID :91824766

Safety of Murepavadin

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H301-H311-H331
Precautionary Statements:P261-P280-P301+P310-P311
Class:6.1
UN#:2811
Packing Group:

Isoform Comparison

Biological Activity

In Vitro:

Cell Line
Concentration Treated Time Description References
RBL-2H3 cells 10 µM 30 minutes induces degranulation and production of TNF-α and CCL2 Front Immunol. 2021 Jun 23;12:689410
Clinical isolates 0.5 µg/mL 8 and 24 hours Assess the bactericidal effect of Murepavadin in combination with ciprofloxacin against clinical isolates. Results showed that the combination resulted in 1.83×10^5–4.03×10^6-fold killing of all strains after 8 hours, which was 4.00×10^2–1.78×10^5-fold fewer bacteria than with each antibiotic alone. Antibiotics (Basel). 2024 Aug 26;13(9):810
Pseudomonas aeruginosa PA14 0.05 mg/ml 8 hours To evaluate the bactericidal effect of murepavadin in combination with colistin on P. aeruginosa PA14, results showed that the combination significantly reduced bacterial survival. Elife. 2021 Apr 6;10:e65836
Pseudomonas aeruginosa PA14 0.05 mg/ml 10 minutes To evaluate the effect of murepavadin on the outer membrane permeability of P. aeruginosa PA14, results showed that murepavadin increased bacterial susceptibility to colistin. Elife. 2021 Apr 6;10:e65836
LAD2 cells 10 µM 30 minutes induces Ca2+ mobilization, degranulation, and production of IL-8 and CCL3 Front Immunol. 2021 Jun 23;12:689410
mexZ::Tn mutant 0.5 µg/mL 8 hours and 24 hours To evaluate the bactericidal effects of murepavadin in combination with tobramycin or amikacin against the mexZ::Tn mutant. The results showed that the combination reduced bacterial counts by 100-fold after 8 hours and by 106-fold (tobramycin) or 100-fold (amikacin) after 24 hours. Antimicrob Agents Chemother. 2024 Apr 3;68(4):e0153923
Wild-type Pseudomonas aeruginosa PA14 0.25 µg/mL 30 minutes To evaluate the effect of murepavadin on bacterial survival. The results showed that treatment with 0.25 µg/mL murepavadin for 30 minutes resulted in approximately 80% bacterial survival. Antimicrob Agents Chemother. 2024 Apr 3;68(4):e0153923
Wild-type Pseudomonas aeruginosa PA14 0.5 µg/mL 8 hours and 24 hours To evaluate the bactericidal effects of murepavadin in combination with tobramycin or amikacin. The results showed that the combination reduced bacterial counts by 50- to 100-fold after 8 hours and by at least 105-fold after 24 hours. Antimicrob Agents Chemother. 2024 Apr 3;68(4):e0153923
PAO1 and its mutants 0.015 to 32 mg/L Overnight incubation Determine MIC values of Murepavadin against PAO1 and its mutants Front Cell Infect Microbiol. 2024 Dec 6;14:1446626
Pseudomonas aeruginosa clinical isolates >0.25 mg/L Determine MIC values of Murepavadin and study its resistance mechanisms Front Cell Infect Microbiol. 2024 Dec 6;14:1446626
PA14 0.5 µg/mL 8 and 24 hours Evaluate the bactericidal effect of Murepavadin in combination with ciprofloxacin. Results showed that Murepavadin and ciprofloxacin alone reduced live bacterial numbers by approximately 50 and 500 times, respectively, while the combination further reduced bacterial numbers by 1.51×10^4 and 1.50×10^3 times. Antibiotics (Basel). 2024 Aug 26;13(9):810
Pseudomonas aeruginosa isolates 0.016 to 16 mg/liter To determine the in vitro antimicrobial activity of Murepavadin against Pseudomonas aeruginosa isolates, with MIC50 of 0.12 mg/liter and MIC90 of 2 mg/liter Antimicrob Agents Chemother. 2020 Jan 27;64(2):e01541-19
Pseudomonas aeruginosa PA14 0.25 µg/mL 1 hour To evaluate the effect of Murepavadin on bacterial membrane integrity and protein composition. Results showed that Murepavadin increased outer membrane permeability and induced the AlgU-mediated envelope stress response. Microbiol Spectr. 2023 Sep 5;11(5):e0125723
Pseudomonas aeruginosa CF strains 0.06 to ≥128 mg/L To evaluate the in vitro activity of murepavadin against 230 cystic fibrosis (CF) strains of Pseudomonas aeruginosa isolated from 12 French hospitals, in comparison with 12 other antipseudomonal antibiotics. Results showed that 9.1% of strains had a minimum inhibitory concentration (MIC) >4 mg/L, at least 128-fold higher than the modal MIC value of the whole collection (≤0.06 mg/L). Antimicrob Agents Chemother. 2024 Jan 10;68(1):e0129823
P. aeruginosa DSM 25716 0.25 µg/mL 18–20 hours MIC of 0.25 µg·mL−1 against VIM β-lactamase-expressing carbapenem-resistant strain, validating broad-spectrum activity. Biomolecules. 2024 Apr 27;14(5):526
P. aeruginosa DSM 24600 0.03125 µg/mL 18–20 hours Activity against ESBL-producing carbapenem-resistant strain (MIC 0.03125 µg·mL−1), demonstrating efficacy against resistant variants. Biomolecules. 2024 Apr 27;14(5):526
P. aeruginosa ATCC 27853 0.0625 µg/mL 18–20 hours Determination of MIC for different murepavadin batches showed consistent activity (0.0625 µg·mL−1) against P. aeruginosa ATCC 27853, confirming preserved chiral integrity. Biomolecules. 2024 Apr 27;14(5):526

In Vivo:

Species
Animal Model
Administration Dosage Frequency Description References
Mice Lung infection model Intranasal administration 0.25 mg/kg murepavadin and 5 mg/kg colistin Single dose, lasting 3 hours To evaluate the efficacy of murepavadin in combination with colistin for treating P. aeruginosa lung infections, results showed that the combination significantly reduced bacterial load in the lungs. Elife. 2021 Apr 6;10:e65836
Mice MrgprB2-/- mice Intradermal injection 30 µM Single injection, evaluated after 30 minutes Evaluate Murepavadin-induced vascular permeability via MrgprB2 Front Immunol. 2021 Jun 23;12:689410
Mice Acute pneumonia model Intranasal administration Murepavadin: 0.25 mg/kg; Amikacin: 35 mg/kg Single dose, 3 hours post-infection To evaluate the therapeutic efficacy of the murepavadin-amikacin combination in a mouse acute pneumonia model. The results showed that treatment with murepavadin or amikacin alone reduced the mean bacterial load by approximately 28-fold, whereas the combined treatment reduced the mean bacterial load by 756-fold, displaying a synergistic bactericidal effect. Antimicrob Agents Chemother. 2024 Apr 3;68(4):e0153923
BALB/c mice Acute pneumonia model Intranasal administration 0.25 mg/kg Murepavadin and 0.5 mg/kg ciprofloxacin Single dose, evaluated after 16 hours Evaluate the in vivo bactericidal effect of Murepavadin in combination with ciprofloxacin. Results showed that Murepavadin and ciprofloxacin alone reduced bacterial loads by 33 and 43 times, respectively, while the combination reduced the mean bacterial load by 1171 times, demonstrating a synergistic bactericidal effect. Antibiotics (Basel). 2024 Aug 26;13(9):810
CD-1 mice Neutropenic mouse lung infection model Subcutaneous injection 0.125 to 16 mg/kg Every 24h, 12h, or 6h for 24h To evaluate the pharmacodynamic properties of Murepavadin in a lung infection model and determine the correlation between pharmacodynamic indices and efficacy. Results showed that the fAUC/MIC ratio correlated best with efficacy, with mean fAUC/MIC values of 27.8 and 39.9 required for static effect and 1-log kill, respectively. Antimicrob Agents Chemother. 2019 Feb 26;63(3):e01699-18
BALB/c mice Acute pneumonia model Intranasal administration 0.25 mg/kg Murepavadin, 7.5 mg/kg Ceftazidime, 1.875 mg/kg Avibactam Single dose, evaluated after 13 hours To evaluate the synergistic therapeutic effect of Murepavadin in combination with Ceftazidime/Avibactam against Pseudomonas aeruginosa infection. Results showed that the combination significantly reduced bacterial loads in the lungs, demonstrating a synergistic bactericidal effect. Microbiol Spectr. 2023 Sep 5;11(5):e0125723

Clinical Trial:

NCT Number Conditions Phases Recruitment Completion Date Locations
NCT02110459 Renal Impairment PHASE1 COMPLETED 2025-07-15 CRS Clinical Research Services... More >> Kiel GmbH, Kiel, 24105, Germany Less <<
NCT02096328 Ventilator Associated Pneumoni... More >>a|Lower Respiratory Infection Less << PHASE2 COMPLETED 2025-12-16 ATTIKON University Hospital, A... More >>thens, Greece|Hospital EVANGELISMOS, Athens, Greece|Hospital KORGIALENIO-BENAKIO E.E.S, Athens, Greece|SOTIRA Pulmonary Clinic, Athens, Greece|Hospital Bellvitge, Barcelona, Spain|Hospital Clinic, Barcelona, Spain|Hospital Del Mar, Barcelona, Spain|Hospital Clinic San Carlos, Madrid, Spain|Hospital Joan XXIII, Tarragona, Spain|Hospital La Fe, Valencia, Spain Less <<
NCT02096315 Bronchiectasis|Lower Respirato... More >>ry Infection Less << PHASE2 TERMINATED 2025-11-15 Hospital Bellvitge, Barcelona,... More >> Spain|Hospital Clinic, Barcelona, Spain|Hospital La Fe, Valencia, Spain|Royal Infirmary, City of Edinburgh, United Kingdom Less <<

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

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10 mM

0.64mL

0.13mL

0.06mL

3.22mL

0.64mL

0.32mL

6.44mL

1.29mL

0.64mL

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