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Expression of PNPLA1 in highly differentiated keratinocytes
Impaired epidermal permeability barrier in Pnpla1-sol- mice
Figure™1Impaired skin barrier function in Pnpla1-sol- mice.(a) Immunohistochemical staining for PNPLA1 (red), followed by counterstaining with DAPI (blue), in skin sections from Pnpla1+sol+ and Pnpla1-sol- newborns. Dashed lines indicate the upper border
Aberrant keratinocyte differentiation in Pnpla1-sol- mice
Defective acylceramide biosynthesis in Pnpla1-sol- skin
Figure™2Aberrant terminal differentiation of Pnpla1-sol- epidermis.(a) Immunohistochemical staining of keratinocyte differentiation markers (red), followed by conterstaining with DAPI (blue), in skin sections from Pnpla1+sol+ and Pnpla1-sol- newborn mice
Figure™3Impaired acylceramide formation in Pnpla1-sol- epidermis.(a) Representative TLC analysis of lipids extracted from Pnpla1+sol+, Pnpla1+sol- and Pnpla1-sol- epidermis. In Pnpla1-sol- mice, EOS, GlcEOS and OAFHA were almost completely depleted (blue)
Keratinocyte-specific Pnpla1 ablation impairs skin barrier
Figure™4Phenotypes of keratinocyte-specific Pnpla1-deficient mice.(a) qPCR analysis of Pnpla1 expression in various tissues of control (fsolf) (n=2) and Pnpla1fsolf K14-Cre (fsolf K14-Cre) (n=4) mice at P5. (b) Postnatal death within 6 days due to epiderm
EOS rescues aberrant differentiation of mutant keratinocytes
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