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Attenuation of Abnormal Scarring Using Spherical Nucleic Acids Targeting Transforming Growth Factor Beta 1.


ABSTRACT: Abnormal scarring is a consequence of dysregulation in the wound healing process, with limited options for effective and noninvasive therapies. Given the ability of spherical nucleic acids (SNAs) to penetrate skin and regulate gene expression within, we investigated whether gold-core SNAs (AuSNAs) and liposome-core SNAs (LSNAs) bearing antisense oligonucleotides targeting transforming growth factor beta 1 (TGF-?1) can function as a topical therapy for scarring. Importantly, both SNA constructs appreciably downregulated TGF-?1 protein expression in primary hypertrophic and keloid scar fibroblasts in vitro. In vivo, topically applied AuSNAs and LSNAs downregulated TGF-?1 protein expression levels and improved scar histology as determined by the scar elevation index. These data underscore the potential of SNAs as a localized, self-manageable treatment for skin-related diseases and disorders that are driven by increased gene expression.

SUBMITTER: Ponedal A 

PROVIDER: S-EPMC7946158 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Attenuation of Abnormal Scarring Using Spherical Nucleic Acids Targeting Transforming Growth Factor Beta 1.

Ponedal Adam A   Zhu Shengshuang S   Sprangers Anthony J AJ   Wang Xiao-Qi XQ   Yeo David C DC   Lio Daniel C S DCS   Zheng Mengjia M   Capek Matthew M   Narayan Suguna P SP   Meckes Brian B   Paller Amy S AS   Xu Chenjie C   Mirkin Chad A CA  

ACS applied bio materials 20201113 12


Abnormal scarring is a consequence of dysregulation in the wound healing process, with limited options for effective and noninvasive therapies. Given the ability of spherical nucleic acids (SNAs) to penetrate skin and regulate gene expression within, we investigated whether gold-core SNAs (AuSNAs) and liposome-core SNAs (LSNAs) bearing antisense oligonucleotides targeting transforming growth factor beta 1 (TGF-<i>β</i>1) can function as a topical therapy for scarring. Importantly, both SNA const  ...[more]

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