한빛사 논문
Hooyeon Junga, Min Kyung Kimb, Jun Yup Leea, Seung Woo Choib, Jaeyun Kima,b,c,d,*
aSchool of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
bDepartment of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
cBiomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
dInstitute of Quantum Biophysics (IQB), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
*To whom correspondence should be addressed.
Abstract
Transdermal drug delivery patches based on hydrogels are widely used for the transdermal delivery of diverse drugs. However, most hydrogels do not exhibit adequate adhesiveness to skin surface. Herein, tissue adhesive hydrogels consisting of polyacrylamide/polydopamine (PAM/PDA) hydrogels embedded with extra‐large pore mesoporous silica nanoparticles (XL‐MSNs) are proposed based on the synergy of cohesive and adhesive properties. The incorporation of XL‐MSNs leads to enhanced strength and adhesiveness to skin tissue due to an increased cohesive property derived from molecular interactions between XL‐MSNs and polymer chains. The application of XL‐MSNs to the hydrogel–skin tissue interface leads to a further enhanced adhesiveness due to the adhesive gluing role of XL‐MSNs on the interface. The optimized condition enables a 4.9‐fold increase in adhesion energy on the porcine skin tissue, compared to the control PAM/PDA patch. Strong adhesion is achieved immediately after the hydrogel patch is attached onto the skin as well as the surfaces of other organs. Finally, transdermal drug delivery through porcine skin is demonstrated by using the hydrogel patch, with a model drug loaded in the XL‐MSNs embedded in the patch. These observations indicate a simple but highly effective strategy for preparing a highly adhesive hydrogel patch for transdermal drug delivery.
Keywords: adhesive hydrogels, dopamine, hydrogel patch, mesoporous silica, transdermal drug delivery system
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TOP52020년 후보
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