Cited by 153Adrenal and Paraganglionic TumorsAdrenal Hormones and DisordersWnt/β-catenin signaling in development and cancer

Frequent mutations of β‐catenin gene in sporadic secreting adrenocortical adenomas*

Tadjine, Mimi, Lampron, Antoine, Ouadi, Lydia, Bourdeau, Isabelle·2008·Clinical Endocrinology

Abstract

OBJECTIVE: Molecular alterations remain largely unknown in most sporadic adrenocortical tumours and hyperplasias. In our previous work, we demonstrated the differential expression of several Wnt/beta-catenin signalling-related genes implicated in ACTH-independent macronodular adrenal hyperplasias (AIMAH). To better understand the role of Wnt/beta-catenin signalling in adrenocortical tumours, we performed mutational analysis of the beta-catenin gene. METHODS: We studied 53 human adrenocortical samples (33 adenomas, 4 carcinomas, 13 AIMAH, 3 ACTH-dependent adrenal hyperplasias) and the human adrenocortical cancer cell line NCI-H295R. All samples were screened for somatic mutations in exons 3 and 5 of the beta-catenin gene. Eleven and six samples were analysed for beta-catenin protein expression by Western blotting and immunohistochemistry, respectively. RESULTS: No mutations were detected in adrenocortical carcinomas, AIMAH and ACTH-dependent hyperplasias. Genetic alterations were found in 5 (15%) out of 33 adenomas: three cortisol-secreting adenomas, one aldosterone-secreting adenoma and one nonfunctional adenoma. Two-point mutations occurred at serine residues of codons 37 and 45 (S37C and S45F). The remaining three tumours contained deletions of 6, 55 and 271 bp. H295R cells carry an activating S45P mutation. Western blot analysis of samples with 55- and 271-bp deletions showed an additional shorter and more intense band representing an accumulation of the mutated form of beta-catenin protein. In addition, cytoplasmic and/or nuclear accumulation of beta-catenin was observed in mutated adenomas by immunohistochemistry. CONCLUSIONS: Activating mutations of exon 3 of the beta-catenin gene are frequent in adrenocortical adenomas, and further characterization of the Wnt/beta-catenin signalling pathway should lead to a better understanding of adrenal tumourigenesis.

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Crossref · 10.1111/j.1365-2265.2007.03033.x

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  • Activating point mutations in CTNNB1 are identified in over 25% of both ACAs and ACCs in children and adults.

    “mutational analysis of the effector of the canonical Wnt pathway, the β-catenin gene, CTNNB1, has identified activating point mutations in over 25% of both ACAs and ACCs in children and adults (149, 206–208).”

    From Adrenocortical carcinoma (2014) · cites this paper as [208]

  • Mutational analysis of CTNNB1 identified activating point mutations in both ACAs and ACCs.

    “Furthermore, mutational analysis of the β-catenin gene CTNNB1 identified activating point mutations in both ACAs and ACCs (149, 206–208).”

    From Adrenocortical carcinoma (2014) · cites this paper as [208]

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Authors
Tadjine, M., Lampron, A., Ouadi, L., & Bourdeau, I.
Affiliations
Centre Hospitalier de l’Université de Montréal (CA)
Corresponding author
Bourdeau, Isabelle
Venue
Clinical Endocrinology
Publisher
Wiley
Published
2007-08-09
Volume
68
Issue
2
Pages
264-270
ISSN
  • 0300-0664 (ISSN-L)
  • 1365-2265
OpenAlex
W1984771998
Cited by
153
References
31
Citations by year
2026: 7 · 2025: 3 · 2024: 2 · 2023: 5 · 2022: 6 · 2021: 6 · 2020: 7 · 2019: 9 · 2018: 3 · 2017: 10 · 2016: 14 · 2015: 11 · 2014: 11 · 2013: 10 · 2012: 6
FWCI
9.96
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
Keywords
β-catenin, somatic mutations, adrenal adenoma, Wnt/β-catenin signaling, activating mutations, adrenal hyperplasia, adrenocortical carcinoma
MeSH terms
DNA Mutational Analysis, Humans, Immunohistochemistry, Mutation, Adrenocortical Adenoma, Reverse Transcriptase Polymerase Chain Reaction, beta Catenin

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