Correction of Hair Shaft Defects Through Allele-Specific Silencing of Mutant Krt75

September 2015 in “ Journal of Investigative Dermatology ”

Ying Liu, Elizabeth R. Snedecor, Xu Zhang, Yanfeng Xu, Lan Huang, Evan Jones, Lianfeng Zhang, Richard A.F. Clark, Dennis R. Roop, Chuan Qin, Chen Chen Jiang

allele-specific silencing small interfering RNAs siRNAs mutant Krt75 gene hair shaft defects lentiviral vector short hairpin RNA shRNA mutant Krt75 mRNA RNA interference keratin genes keratin mutations gene silencing siRNA hair defects lentivirus RNAi keratin

Studysummary This study demonstrated that RNA interference targeting mutant keratin genes can effectively correct hair shaft structural defects in a mouse model by reducing mutant gene expression. Our plain-language summary of this paper — not a Tressless recommendation.

The document from 2016 describes a study where allele-specific small interfering RNAs (siRNAs) were used to selectively suppress a mutant form of the Krt75 gene, which causes hair shaft defects in mice. The study showed that hair regenerated from mutant Krt75 mouse cells exhibited defects when grafted, but these defects were suppressed when the cells were treated with a lentiviral vector expressing mutant Krt75-specific short hairpin RNA (shRNA). This led to a significant reduction in mutant Krt75 mRNA and corrected the hair structural phenotype. The study suggests that RNA interference can be used to durably correct hair defects caused by mutant keratin genes and offers a potential therapeutic approach for disorders related to keratin mutations. Safety concerns regarding the use of lentiviral vectors were acknowledged, highlighting the need for safer therapeutic siRNA delivery methods.

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Research cited in this study

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