Subcellular compartmentalization of STIM1 for the distinction of Darier disease from Hailey-Hailey disease.
J Dtsch Dermatol Ges
; 20(12): 1613-1619, 2022 12.
Article
en En
| MEDLINE
| ID: mdl-36442136
ABSTRACT
BACKGROUND AND OBJECTIVES:
Darier disease (DD) and Hailey-Hailey disease (HHD) are rare disorders caused by mutations in the ATPase, Sarcoplasmic/Endoplasmic Reticulum Ca2+ Transporting 2 (ATP2A2) and ATPase Ca2+ Transporting Type 2C, Member 1 (ATP2C1) gene, respectively, which lead to a disturbance of calcium metabolism in keratinocytes. Clinically, this is reflected by an impairment of keratinization. Histologically, acantholysis with variable degrees of dyskeratosis and parakeratosis is observed. Both diseases can usually be differentiated clinically, histopathologically and genetically. However, their routine distinction might be challenging since some patients do not harbor ATP2A2 or ATP2C1 mutations. To solve this diagnostic challenge, we studied the differential expression of two proteins of store-operated calcium entry (SOCE), stromal interaction molecule 1 (STIM1) and calcium release-activated calcium modulator 1 (ORAI1), by immunohistochemistry. PATIENTS ANDMETHODS:
Five individuals with ambiguous diagnostic findings and eight controls with an unambiguous diagnosis were studied clinically, histologically, genetically, and by immunohistochemistry for STIM1 and ORAI1.RESULTS:
DD patients consistently showed a cytoplasmic STIM1 expression while patients with HHD revealed a membrane-associated staining pattern. In contrast, ORAI1 did not show a differential expression pattern.CONCLUSIONS:
Our data suggest subcellular compartmentalization of STIM1 as novel biomarker for the distinction of the two disorders.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pénfigo Familiar Benigno
/
Molécula de Interacción Estromal 1
/
Enfermedad de Darier
Límite:
Humans
Idioma:
En
Revista:
J Dtsch Dermatol Ges
Asunto de la revista:
DERMATOLOGIA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Alemania