Efficacy of the novel antibiotic POL7001 in preclinical models of Pseudomonas aeruginosa pneumonia

Cristina Cigana, Francesca Bernardini, Marcella Facchini, Beatriz Alcalá-Franco, Camilla Riva, Ida De Fino, Alice Rossi, Serena Ranucci, Pauline Misson, Eric Chevalier, Maj Brodmann, Michel Schmitt, Achim Wach, Glenn E. Dale, Daniel Obrecht, Alessandra Bragonzi

Research output: Contribution to journalArticlepeer-review


The clinical development of antibiotics with a new mode of action combined with efficient pulmonary drug delivery is a priority against untreatable Pseudomonas aeruginosa lung infections. POL7001 is a macrocycle antibiotic belonging to the novel class of protein epitope mimetic (PEM) molecules with selective and potent activity against P. aeruginosa. We investigated ventilator-associated pneumonia (VAP) and cystic fibrosis (CF) as indications of the clinical potential of POL7001 to treat P. aeruginosa pulmonary infections. MICs of POL7001 and comparators were measured for reference and clinical P. aeruginosa strains. The therapeutic efficacy of POL7001 given by pulmonary administration was evaluated in murine models of P. aeruginosa acute and chronic pneumonia. POL7001 showed potent in vitro activity against a large panel of P. aeruginosa isolates from CF patients, including multidrug-resistant (MDR) isolates with adaptive phenotypes such as mucoid or hypermutable phenotypes. The efficacy of POL7001 was demonstrated in both wild-type and CF mice. In addition to a reduced bacterial burden in the lung, POL7001-treated mice showed progressive body weight recovery and reduced levels of inflammatory markers, indicating an improvement in general condition. Pharmacokinetic studies indicated that POL7001 reached significant concentrations in the lung after pulmonary administration, with low systemic exposure. These results support the further evaluation of POL7001 as a novel therapeutic agent for the treatment of P. aeruginosa pulmonary infections.

Original languageEnglish
Pages (from-to)4991-5000
Number of pages10
JournalAntimicrobial Agents and Chemotherapy
Issue number8
Publication statusPublished - Aug 1 2016

ASJC Scopus subject areas

  • Pharmacology (medical)
  • Pharmacology
  • Infectious Diseases


Dive into the research topics of 'Efficacy of the novel antibiotic POL7001 in preclinical models of Pseudomonas aeruginosa pneumonia'. Together they form a unique fingerprint.

Cite this