ArticlebioRxiv : the preprint server for biology2026
The Testing and Characterization of the Bacterial Response to Novel Lipid Ether Amine-Based Antibiotics.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
Abstract
Bacterial biofilms exhibit enhanced resistance to antibiotics compared to planktonic bacteria, though the mechanisms underlying this tolerance remain incompletely understood. Evidence suggests biofilm-associated bacteria maintain active lipid metabolism despite reduced metabolic rates, making lipid-targeting strategies potentially effective. We investigated isopropyl lipid ether amines (LEAs), computationally designed to bind phospholipase A2, as novel antibiotics targeting biofilm bacteria through lipid metabolism disruption. LEAs consist of variable-length alkyl chain analogs of natural fatty acids connected via ether linkages to cationic head groups. Using methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa in collagen microplate assays, minimal inhibitory concentration studies, and ex vivo porcine biofilm models, we systematically compared LEAs against their fatty acid analogs to isolate the contribution of the lipid and amine moieties. Palmitic acid analog LEA-160 and oleic acid analog LEA-181 achieved MIC and reduced microplate biofilm colony forming units (CFU) against MRSA, while short lipid chain octanoic acid analog LEA-80 reduced Pseudomonas biofilms, with no effect for natural fatty acids. This demonstrates that the cationic amine group provides essential antibacterial function beyond the alkyl chain contribution. Comprehensive lipidomics analysis using LC-IMS-MS/MS revealed that LEA treatment induces significant alterations in MRSA lipid profiles, supporting a mechanism involving disruption of bacterial membrane lipid metabolism. Structure-activity relationships confirmed that both the lipid chain and cationic moieties are necessary for LEA antibacterial efficacy, with metabolic effects distinct from their natural fatty acid analogs. These findings establish LEAs as a mechanistically distinct antibiotic class targeting bacterial lipid metabolism pathways critical for biofilm survival.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.