894 Towards a genetically- and phenotypically-relevant mouse model for pachyonychia congenita
نویسندگان
چکیده
Pachyonychia congenita(PC) is a rare disorder that features palmoplantar keratoderma(PPK) as its most significant symptom. PPK are thick calluses arising in palmar and plantar skin painful to the point of debilitation PC related disorders. caused by dominantly-acting small mutations affect coding sequence KRT6A, KRT6B, KRT6C, KRT16 or KRT17. Unlike case for many other keratinopathies, cell fragility not key driver genesis lesions PC. There currently no effective treatment this disorder. We previously generated mouse strain, Krt16 null, develops PC-like footpad (J. Invest. Dermatol. 132:1384-91, 2012). The study these mice has yielded novel insight into pathophysiology However, given cases involve missense alleles genes, Krt16null genetically relevant nor they amenable developing testing mutant allele-specific therapies. To address deficiency, we used CRISPR-Cas9 introduce R123C mutation gene mice. This allele accounts >20% KRT16-based (33/157) associated with classic presentation. shows Mendelian inheritance does compromise viability offspring. At 5 months age, homozygous show raised footpads but do feature obvious hyperkeratosis acanthosis upon histological examination skin. These findings contrast null mice, which frequently die pre-weaning (66% penetrance) develop striking PPK-like two age (100% penetrance). Further analysis will shed new light enigmatic represents.
منابع مشابه
Pachyonychia congenita: A rare genodermatosis
Pachyonychia congenita (PC) is a rare genodermatosis with only 450 cases reported since 1906. It is of two types, type I due to mutation in genes 6a and 16, and 6b and 17 in type II with an autosomal dominant inheritance in both types. A 22 yr old female patient presented in our OPD with hypertrophy of finger and toe nails, palmoplantar keratoderma, oral punctuate leukokeratosis, hyperhidrosis ...
متن کاملTreatment of pachyonychia congenita.
There are currently no specific treatments for pachyonychia congenita (PC). Available treatments generally are directed at specific manifestations of the disorder, and an effective treatment plan must recognize that different patients are more or less troubled by different manifestations of the disease. Treatment for all aspects of PC has been less than completely satisfactory. Very few studies...
متن کاملPachyonychia Congenita-Associated Alopecia
A 5-year-old female, known case of pachyonychia congenita, presented with diffuse hair loss; remaining hairs were easily plucked kinky hairs. Hair samples from patient were investigated using a light microscope. The hairs of the patients were mainly anagen hairs and unlike normal plucked anagen hairs, showed keratinization and cornification of their hair bulbs. No specific hair shaft abnormalit...
متن کاملPachyonychia congenita Authors: Professors
Pachyonychia congenita (PC) is a rare genodermatosis affecting the nails and other ectodermal tissues. It is mainly characterized by gross thickening of all finger and toe nails. Different additional clinical features are observed; they fit into two major types: the Jadassohn-Lewandowsky and the Jackson-Lawler syndrome. The condition is usually transmitted as an autosomal dominant trait, though...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Investigative Dermatology
سال: 2023
ISSN: ['1523-1747', '0022-202X']
DOI: https://doi.org/10.1016/j.jid.2023.03.904