Research context and placement

A double-network hydrogel bonds to wet tissue through quinone-mediated interactions. Public-text evidence on patch and injectable applications in animal bleeding and incision models supports placement in wet tissue adhesion.

Hydrogels for wet-tissue adhesion and hemostasis

Wet, moving tissue presents water, irregular geometry and deformation at once. STAT combines a hydrated gel with tissue-binding chemistry. Establishing conformal contact and sustaining that contact under load are connected but distinct requirements.

Approach and advances

The double-network design links quinone-mediated tissue binding with tannic acid-associated hemostatic functions. Conformability and binding are designed together. The absence of a separate activation step at application does not mean that oxidation control is absent during preparation.

Eleven panels show STAT fabrication, spectroscopy, thermal analysis, oxidation-related color changes, skin-adhesion photographs and measurements.
Figure 2 · Original paper figure

Network formation, oxidation, structural characterization and porcine-skin adhesion measurements for STAT.

Tae Young Kim, Kayoung Son, Chang-Hwan Moon et al.. “Quinone-mediated, tissue-adaptive double-network hydrogel for instant hemostasis and wet-tissue adhesion”. Figure 2. DOI: 10.1038/s41467-026-72068-6. CC BY 4.0. Existing lossless WebP asset reused; original figure pixel content unchanged.

Source figure and caption ↗ · DOI: 10.1038/s41467-026-72068-6 ↗ · CC BY 4.0 ↗

Evaluation and conditions

Adhesion tests depend on tissue, hydration, contact conditions and loading direction. Shear stress and peel energy are not interchangeable performance measures. Animal bleeding outcomes also address a different question and cannot substitute for adhesion testing on every tissue.

Key findings

Before oxidation, the gel adhered to porcine skin but detached readily, whereas oxidized STAT resisted removal. Increased adhesion in both shear and 180-degree peel tests links catechol-to-quinone conversion to bonding, beyond conformability alone. These are tissue- and test-specific observations, not established effects in every tissue or human surgery.

Limits and open questions

Fair comparisons require matched tissue, contact duration, loading and gel state. Storage, repeated deformation and longer-term tissue response need their own evidence. Read main-text explanations are distinguished from unaudited supplements; no clinical protocol is proposed.

Related external research

Dry double-sided tape for adhesion of wet tissues and devices

DOI: 10.1038/s41586-019-1710-5 ↗

The publisher abstract describes a dry tape that absorbs interfacial water before covalent bonding, offering a mechanistic contrast to hydrated STAT.

This is an abstract-based mechanism comparison, not a ranking of adhesion time or hemostasis across different models.

Abstract checked

Corresponding-author verification

Jungmok Seo: corresponding author

This record concerns Jungmok Seo’s correspondence designation. Author order or an asterisk alone is not treated as confirmation; this check is separate from verification of the research content.

  • Correspondence evidence source ↗

    Correspondence and requests for materials should be addressed to Jungmok Seo.

    Published PDF page 19: correspondence/author information; title and DOI page 1 · local_published_pdf_read

Main-text review scope
Publisher metadata, abstract, and selected design, adhesion, animal-evaluation and methods sections were checked; supplements remain unaudited. Rechecked the pre-/post-oxidation skin-adhesion comparison on p. 6 and adhesion-test methods in the matching local published PDF.
Supplementary review scope
Supporting information was not comprehensively read. A main-text citation to supplementary results does not count as direct inspection of those results.
Pending verification
Reconcile supplements/source data in school Chrome. CC BY 4.0 is stated; third-party figure rights remain separate.

COVERAGE & OUTREACH

Coverage and outreach

Links are checked for their relationship to this paper. Media publication does not establish independent reporting or additional experimental validation.

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Sources and verification scope

Publisher metadata, abstract, and selected design, adhesion, animal-evaluation and methods sections were checked; supplements remain unaudited. Rechecked the pre-/post-oxidation skin-adhesion comparison on p. 6 and adhesion-test methods in the matching local published PDF.

The additional commentary is editorially approved within the stated evidence scope. This does not imply complete verification of all main-text and supplementary material.

Additional main-text review scope
Publisher metadata, abstract, and selected design, adhesion, animal-evaluation and methods sections were checked; supplements remain unaudited. Rechecked the pre-/post-oxidation skin-adhesion comparison on p. 6 and adhesion-test methods in the matching local published PDF.
Additional supplementary review scope
Supporting information was not comprehensively read. A main-text citation to supplementary results does not count as direct inspection of those results.