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In Situ Metabolomics of Cortisol-Producing Adenomas
Masanori Murakami1,2, Na Sun3, Fengxia Li3,4
1Medizinische Klinik und Poliklinik IV, Klinikum der Universitt, Ludwig-Maximilians-Universitt Mnchen, Munich, Germany.
Clinical Chemistry
|December 22, 2022
Summary
Mass spectrometry imaging revealed novel metabolic alterations in cortisol-producing adrenal adenomas (CPAs). These findings link tumor metabolism to endocrine function and CPA pathophysiology, advancing our understanding of this condition.
Area of Science:
- Endocrinology
- Metabolomics
- Oncology
Background:
- Cortisol-producing adrenal adenomas (CPAs) are increasingly characterized genetically.
- However, the metabolic alterations driving CPA pathophysiology remain poorly understood.
Purpose of the Study:
- To comprehensively map the metabolic landscape of CPAs using mass spectrometry imaging (MSI).
- To correlate metabolic profiles with clinical phenotypes and steroidogenic enzyme expression.
- To elucidate novel metabolic links in CPA development.
Main Methods:
- A cohort of 46 patients with adrenal tumors (35 CPAs, 11 nonfunctional adenomas) was studied.
- Comprehensive mass spectrometry imaging (MSI) was performed.
- Metabolomic data were correlated with clinical data and immunohistochemical profiles of steroidogenic enzymes.
Main Results:
- Cortisol hypersecretion severity correlated with 29 metabolites.
- Adrenal androgens were inversely correlated with cortisol secretion and CYP11B1 expression.
- Tumor size correlated with specific fatty acid profiles, including phosphatidic acid 38:8.
Conclusions:
- MSI provides novel insights into metabolic alterations in CPAs.
- These findings reveal new metabolic links between endocrine function and tumorigenesis.
- This study enhances the understanding of CPA pathophysiology.
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