Haploinsufficiency for AAGAB causes clinically heterogeneous forms of punctate palmoplantar keratoderma.
Haploinsufficiency for AAGAB causes clinically heterogeneous forms of punctate palmoplantar keratoderma.
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DOI:
10.1038/ng.2444
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发表时间:
2012-11
期刊:
影响因子:
30.8
通讯作者:
McLean WH
中科院分区:
文献类型:
--
作者:
Pohler E;Mamai O;Hirst J;Zamiri M;Horn H;Nomura T;Irvine AD;Moran B;Wilson NJ;Smith FJ;Goh CS;Sandilands A;Cole C;Barton GJ;Evans AT;Shimizu H;Akiyama M;Suehiro M;Konohana I;Shboul M;Teissier S;Boussofara L;Denguezli M;Saad A;Gribaa M;Dopping-Hepenstal PJ;McGrath JA;Brown SJ;Goudie DR;Reversade B;Munro CS;McLean WH
Palmoplantar keratodermas (PPKs) are a group of disorders that are diagnostically and therapeutically problematic in dermatogenetics. Punctate PPKs are characterized by circumscribed hyperkeratotic lesions on palms and soles with considerable heterogeneity. In 18 families with autosomal dominant punctate PPK (OMIM #148600), we report heterozygous loss-of-function mutations in AAGAB, encoding alpha- and gamma-adaptin binding protein p34, at a previously linked locus on 15q22. p34, a cytosolic protein with a Rab-like GTPase domain, was shown to bind both clathrin adaptor protein complexes, indicative of a role in membrane traffic. Ultrastucturally, lesional epidermis showed abnormalities in intracellular vesicle biology. Immunohistochemistry showed hyperproliferation within the punctate lesions. Knockdown of p34 in keratinocytes led to increased cell division, which was linked to greatly increased epidermal growth factor receptor (EGFR) protein expression and tyrosine phosphorylation. We hypothesize that p34 deficiency may impair endocytic recycling of growth factor receptors such as EGFR, leading to increased signaling and proliferation.
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影响因子:
9.8
作者:
Sprecher, E;Ishida-Yamamoto, A;Mandel, H
通讯作者:
Mandel, H
影响因子:
30.8
作者:
Gissen, P;Johnson, CA;Maher, ER
通讯作者:
Maher, ER
影响因子:
0.9
作者:
El Amri, I.;Mamai, O.;Nouira, R.
通讯作者:
Nouira, R.
DOI:
10.1016/s0190-9622(84)80262-5
发表时间:
1984-01-01
影响因子:
13.8
作者:
BENNION, SD;PATTERSON, JW
通讯作者:
PATTERSON, JW
影响因子:
9.8
作者:
Tarpey, Patrick S.;Stevens, Claire;Raymond, F. Lucy
通讯作者:
Raymond, F. Lucy