Primary bilateral primary adrenal macronodular hyperplasia (PBMAH) is a rare and heterogeneous disorder of the adrenal glands and a cause of chronic endogenous hypercortisolemia associated with Cushing syndrome (CS). In the laboratory of Human Molecular Genetics, possible causative mutations were searched using NGS analysis and SNP genotyping in a family affected by PBMAH associated with CS. Attention is directed to the EFCAB2 (EF-hand calcium binding domain 2) gene which presents a nonsense variation. Information about this gene is scarce, it is known that it has two calcium ion binding domains, a linear transcript, numerous circRNAs and that alterations in its expression are involved in various types of pathologies. The purpose of this study is twofold: first, to perform a literature search to understand what information is known about the gene. The second aim is to describe some gene deletion studies with CRISPR/Cas9, in a thyroid cell line, to study the possible correlation between the EFCAB2 mutation and PBMAH. Studies are still under investigation, but a possible link has emerged between altered expression of EFCAB2 and increased cell viability.
L’iperplasia surrenalica macronodulare primaria bilaterale (PBMAH) è una patologia rara ed eterogenea delle ghiandole surrenali e una delle cause di ipercortisolemia endogena cronica associata alla sindrome di Cushing (CS). Nel laboratorio di Genetica Umana Molecolare mediante analisi NGS e SNP genotyping in una famiglia affetta da PBMAH associata a CS si sono cercate possibili mutazioni causative. L’attenzione si è indirizzata sul gene EFCAB2 (EF-hand calcium binding domain 2) che presenta una variazione nonsenso. Le informazioni riguardo a questo gene sono poche, è risaputo che possiede due domini leganti ioni calcio, un trascritto lineare, numerosi circRNA e che alterazioni nella sua espressione sono coinvolte in patologie di diverso tipo. Lo scopo di questo studio è duplice: in primo luogo, eseguire una ricerca bibliografica per comprendere di quali informazioni si è a conoscenza riguardo al gene. Il secondo intento è quello di descrivere alcuni studi di delezione del gene con CRISPR/Cas9, in una linea cellulare di tiroide, per studiare la possibile correlazione tra la mutazione di EFCAB2 e la PBMAH. Gli studi sono ancora in fase di approfondimento, ma è emerso un possibile collegamento fra un’alterata espressione di EFCAB2 e un’aumentata vitalità cellulare.
Introduzione ai pathway molecolari associati al gene EFCAB2 (EF-hand calcium binding domain 2) e possibile coinvolgimento nell'iperplasia surrenalica bilaterale primaria
TRAPANI, VALERIA
2022/2023
Abstract
Primary bilateral primary adrenal macronodular hyperplasia (PBMAH) is a rare and heterogeneous disorder of the adrenal glands and a cause of chronic endogenous hypercortisolemia associated with Cushing syndrome (CS). In the laboratory of Human Molecular Genetics, possible causative mutations were searched using NGS analysis and SNP genotyping in a family affected by PBMAH associated with CS. Attention is directed to the EFCAB2 (EF-hand calcium binding domain 2) gene which presents a nonsense variation. Information about this gene is scarce, it is known that it has two calcium ion binding domains, a linear transcript, numerous circRNAs and that alterations in its expression are involved in various types of pathologies. The purpose of this study is twofold: first, to perform a literature search to understand what information is known about the gene. The second aim is to describe some gene deletion studies with CRISPR/Cas9, in a thyroid cell line, to study the possible correlation between the EFCAB2 mutation and PBMAH. Studies are still under investigation, but a possible link has emerged between altered expression of EFCAB2 and increased cell viability.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/52047