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Acta Biomater. 2017 May;54:128-137. doi: 10.1016/j.actbio.2017.03.011. Epub 2017 Mar 9.

Functional poly(ε-caprolactone)/chitosan dressings with nitric oxide-releasing property improve wound healing.

Author information

1
State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, PR China.
2
Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, PR China.
3
State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, PR China. Electronic address: kongdeling@nankai.edu.cn.
4
State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, PR China. Electronic address: qiangzhao@nankai.edu.cn.

Abstract

Wound healing dressings are increasingly needed clinically due to the large number of skin damage annually. Nitric oxide (NO) plays a key role in promoting wound healing, thus biomaterials with NO-releasing property receive increasing attention as ideal wound dressing. In present study, we prepared a novel functional wound dressing by combining electrospun poly(ε-caprolactone) (PCL) nonwoven mat with chitosan-based NO-releasing biomaterials (CS-NO). As-prepared PCL/CS-NO dressing released NO sustainably under the physiological conditions, which was controlled by the catalysis of β-galactosidase. In vivo wound healing characteristics were further evaluated on full-thickness cutaneous wounds in mice. Results showed that PCL/CS-NO wound dressings remarkably accelerated wound healing process through enhancing re-epithelialization and granulation formation and effectively improved the organization of regenerated tissues including epidermal-dermal junction, which could be ascribed to the pro-angiogenesis, immunomodulation, and enhanced collagen synthesis provided by the sustained release of NO. Therefore, PCL/CS-NO may be a promising candidate for wound dressings, especially for the chronic wound caused by the ischemia.

STATEMENT OF SIGNIFICANCE:

Serious skin damage caused by trauma, surgery, burn or chronic disease has become one of the most serious clinical problems. Therefore, there is an increasing demand for ideal wound dressing that can improve wound healing. Due to the vital role of nitric oxide (NO), we developed a novel functional wound dressing by combining electrospun polycaprolactone (PCL) mat with NO-releasing biomaterial (CS-NO). The sustained release of NO from PCL/CS-NO demonstrated positive effects on wound healing, including pro-angiogenesis, immunomodulation, and enhanced collagen synthesis. Hence, wound healing process was remarkably accelerated and the organization of regenerated tissues was effectively improved as well. Taken together, PCL/CS-NO dressing may be a promising candidate for wound treatment, especially for the chronic wound caused by the ischemia.

KEYWORDS:

Angiogenesis; Immunomodulation; Nitric oxide; Wound dressing

PMID:
28285076
DOI:
10.1016/j.actbio.2017.03.011
[Indexed for MEDLINE]

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