Evidence map›Paper›PMID 42453353›Full record

ArticleACS pharmacology & translational science2026

Discovery, Structural Characterization, and Preclinical Evaluation of Monoclonal Antibodies against Xylazine Poisoning.

Jason Kang, Ruowen Xu, Shea Lee, Diego Luengas, Caroline M Kim, Courtney Marecki, Joseph Gallant, Nicholas Moeller, Ke Shi, Rajwana Jahan and 4 more

Abstract read
In one paragraph

Article in ACS pharmacology & translational science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors.

Jason KangDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.ORCID https://orcid.org/0000-0001-5736-0005
Ruowen XuDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.
Shea LeeDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.
Diego LuengasDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.
Caroline M KimDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.ORCID https://orcid.org/0009-0002-7402-2491
Courtney MareckiDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.
Joseph GallantDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.
Nicholas MoellerDepartment of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, United States.
Ke ShiDepartment of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, United States.ORCID https://orcid.org/0000-0003-4175-3714
Rajwana JahanCenter for Drug Discovery, Research Triangle Institute International, Research Triangle Park, North Carolina 27709, United States.
Dustin HicksDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.
Scott RunyonCenter for Drug Discovery, Research Triangle Institute International, Research Triangle Park, North Carolina 27709, United States.
Hideki AiharaDepartment of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, United States.ORCID https://orcid.org/0000-0001-7508-6230
Marco PravetoniDepartment of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington 98195, United States.

Funding

X-ray Scattering Technology CoreP30GM133893 · NIGMS · BROOKHAVEN SCIENCE ASSOC-BROOKHAVEN LAB · PI Vivian Stojanoff · 2019 to 2026
$38.6M
Vaccines for fentanyl and its derivatives: A strategy to reduce illicit use and overdoseUH3DA048386 · NIDA · UNIVERSITY OF WASHINGTON · PI PRAVETONI, MARCO · 2022 to 2024
$11.0M
Structural studies of viral replication and invasionR35GM118047 · NIGMS · UNIVERSITY OF MINNESOTA · PI Hideki Aihara · 2016 to 2026
$6.3M
NIDA NIH HHS UH3 DA048386NIGMS NIH HHS P30 GM133893NIGMS NIH HHS R35 GM118047
6 · The paper itself

Abstract

Xylazine is a nonopioid sedative that has emerged as a major adulterant in the illicit drug supply, contributing to rising fatal overdoses across the United States. Xylazine toxicity is not reversed by naloxone, and there are no current FDA-approved therapeutics to counteract its effects in humans. To address this issue, we developed and characterized monoclonal antibodies (mAbs) capable of sequestering xylazine to prevent or treat acute toxicity. By immunizing mice with conjugated haptens targeting distinct epitopes of the xylazine molecule, we generated two lead candidates, Xy1001 and Xy3001. Comparative kinetic analysis revealed that Xy3001 showed a subnanomolar affinity and was selected for structural characterization. X-ray crystallography of the Xy3001-xylazine complex revealed the structural basis for this affinity, showing the binding of xylazine in a deep pocket anchored by hydrogen bonding. Humanization of Xy3001 resulted in a minor reduction in affinity but demonstrated improved biophysical stability and high specificity with no significant cross-reactivity to off-target opioids or stimulants. In a murine model of toxicity, prophylactic administration of both lead candidates significantly attenuated xylazine-induced antinociception, with Xy3001 demonstrating additional mitigation of respiratory depression and bradycardia. Pharmacokinetic analysis demonstrated that mAb treatment limited xylazine entry into the brain. This study validates peripheral sequestration against xylazine as a therapeutic strategy with future efforts aimed at optimization of these lead candidates to increase translational potential.

Indexed as

alpha-2 adrenergic receptor agonistimmunotherapymonoclonal antibodyoverdosepoisoningxylazine

Identifiers

PMID42453353
PMCPMC13366337

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.