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SDHA is a tumor suppressor gene causing paraganglioma

Open access
Burnichon, Nelly, Brière, Jean-Jacques, Libé, Rossella, Vescovo, Laure, Rivière, Julie, Tissier, Frédérique, Jouanno, Elodie, Jeunemaitre, Xavier, Bénit, Paule, Tzagoloff, Alexander, Rustin, Pierre, Bertherat, Jérôme, Favier, Judith, Gimenez-Roqueplo, Anne-Paule·2010·Human Molecular Genetics

Abstract

Mitochondrial succinate-coenzyme Q reductase (complex II) consists of four subunits, SDHA, SDHB, SDHC and SDHD. Heterozygous germline mutations in SDHB, SDHC, SDHD and SDHAF2 [encoding for succinate dehydrogenase (SDH) complex assembly factor 2] cause hereditary paragangliomas and pheochromocytomas. Surprisingly, no genetic link between SDHA and paraganglioma/pheochromocytoma syndrome has ever been established. We identified a heterozygous germline SDHA mutation, p.Arg589Trp, in a woman suffering from catecholamine-secreting abdominal paraganglioma. The functionality of the SDHA mutant was assessed by studying SDHA, SDHB, HIF-1alpha and CD34 protein expression using immunohistochemistry and by examining the effect of the mutation in a yeast model. Microarray analyses were performed to study gene expression involved in energy metabolism and hypoxic pathways. We also investigated 202 paragangliomas or pheochromocytomas for loss of heterozygosity (LOH) at the SDHA, SDHB, SDHC and SDHD loci by BAC array comparative genomic hybridization. In vivo and in vitro functional studies demonstrated that the SDHA mutation causes a loss of SDH enzymatic activity in tumor tissue and in the yeast model. Immunohistochemistry and transcriptome analyses established that the SDHA mutation causes pseudo-hypoxia, which leads to a subsequent increase in angiogenesis, as other SDHx gene mutations. LOH was detected at the SDHA locus in the patient's tumor but was present in only 4.5% of a large series of paragangliomas and pheochromocytomas. The SDHA gene should be added to the list of genes encoding tricarboxylic acid cycle proteins that act as tumor suppressor genes and can now be considered as a new paraganglioma/pheochromocytoma susceptibility gene.

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Metadata

Authors
Burnichon, N., Brière, J.-J., Libé, R., Vescovo, L., Rivière, J., Tissier, F., Jouanno, E., Jeunemaitre, X., Bénit, P., Tzagoloff, A., Rustin, P., Bertherat, J., Favier, J., & Gimenez-Roqueplo, A.-P.
Venue
Human Molecular Genetics
Published
2010-05-18
Volume
19
Issue
15
Pages
3011-3020
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2119169141
Cited by
650
References
9
FWCI
62.72
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: SDHA is a tumor suppressor gene causing paraganglioma. https://app.cochat.ai/papers/10.1093/hmg/ddq206
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Burnichon, N., Brière, J.-J., Libé, R., Vescovo, L., Rivière, J., Tissier, F., Jouanno, E., Jeunemaitre, X., Bénit, P., Tzagoloff, A., Rustin, P., Bertherat, J., Favier, J., & Gimenez-Roqueplo, A.-P. (2010). SDHA is a tumor suppressor gene causing paraganglioma. Human Molecular Genetics. https://doi.org/10.1093/hmg/ddq206

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