Multifunctional DNA Hydrogels with Hydrocolloid‐Cotton Structure for Regeneration of Diabetic Infectious Wounds

Currently, diabetic infectious wound treatments remain a significant challenge for regenerative medicine due to the unicity of clinical dressings, which lack systemic multifunctional wound dressings with high absorbability, customizable shape, rapid self‐healing, guiding tissue regeneration, and restoring physiological functions. Here, a multifunctional DNA hydrogel is conveniently obtained through grafting DNA units and polyethyleneimine dynamic cross‐linking and doped heating function black phosphorus quantum dots. The obtained DNA hydrogel features excellent exudate absorption performance, adjustable heating ability, mechanical behavior, self‐healing ability, writability, tissue adhesion, and antibacterial properties. The incorporation of procyanidin B2 (OPC B2) endows the DNA hydrogels with renowned scavenging free radicals and antioxidant properties. Furthermore, the DNA hydrogel dressing can promote the transformation of macrophages from pro‐inflammatory M1 into repairing M2 phenotype, keeping the wound in a stable remodeled state. Astonishingly, the DNA hydrogel dressing can activate neurons to transform into a repair state, accelerating skin nerve regeneration and angiogenesis. Beyond that, it can recruit myeloid cells to activate the adaptive immune response, enhancing the ability of DNA hydrogel dressing to promote tissue regeneration, thereby promoting hair follicle and hair regeneration. Therefore, this advanced collaborative strategy provides an effective method for cascade management of clinical guided tissue regeneration.

• Publication year

  2021

• Venue

  Advanced Functional Materials

• Publication date

  2021-09-01

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1002/adfm.202106167
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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