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Ameliorated Skin Inflammation through the Synergistic Effect of Gold Nanorod-Dexamethasone and Photothermal Therapy

Authors
Kim, NamkyungJeong, Yong-GyuLee, SoyoungKang, JinjooKim, YeyoungChoi, Young-AeKhang, DongwooKim, Sang-Hyun
Issue Date
Mar-2024
Publisher
AMER CHEMICAL SOC
Keywords
gold nanorod; dexamethasone; psoriasis; skin penetration; near-infrared laser
Citation
ACS APPLIED MATERIALS & INTERFACES, v.16, no.10, pp 12217 - 12231
Pages
15
Journal Title
ACS APPLIED MATERIALS & INTERFACES
Volume
16
Number
10
Start Page
12217
End Page
12231
URI
https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/90893
DOI
10.1021/acsami.3c16919
ISSN
1944-8244
1944-8252
Abstract
Psoriasis, a prevalent chronic inflammatory skin ailment affecting approximately 2-3% of the global population, is characterized by persistent symptoms. Dexamethasone, a primary corticosteroid for treating psoriasis, demonstrates notable efficacy; however, its limited skin permeation results in documented adverse effects. To address this, the presented study employed a novel strategy to conjugate gold nanorod and dexamethasone and evaluate their potential for mitigating psoriatic inflammation using an imiquimod-induced mouse model and human skin cells. Our findings revealed enhanced cutaneous penetration of gold nanorod and dexamethasone conjugates compared with that of dexamethasone, owing to superior skin penetration. Gold nanorod and dexamethasone conjugates demonstrated an optimal pharmacological impact at minimal dosages without toxicity during extended use. To further enhance the effectiveness of gold nanorod and dexamethasone conjugates, 808 nm near-infrared laser irradiation, which reacts to gold, was additionally applied to achieve thermal elevation to expedite drug skin penetration. Supplementary laser irradiation at 808 nm significantly ameliorated psoriatic symptoms following deep gold nanorod and dexamethasone conjugates penetration. This corresponded with restored peroxisome proliferator-activated receptor-gamma levels and accelerated dexamethasone release from the gold nanorod and dexamethasone conjugates complex. These findings highlight the potential of gold nanorod and dexamethasone conjugates to enhance drug penetration through dermal layers, thereby aiding psoriasis treatment. Moreover, its compatibility with photothermal therapy offers prospects for novel therapeutic interventions across various inflammatory skin disorders.
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