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Altieri B, Secener AK, Sai S, Fischer C, Sbiera S, Arampatzi P, Kircher S, Herterich S, Landwehr L, Vitcetz SN, Braeuning C, Fassnacht M, Ronchi CL, Sauer S. Single-nucleus and spatial transcriptome reveal adrenal homeostasis in normal and tumoural adrenal glands. Clin Transl Med 2024; 14:e1798. [PMID: 39167619 PMCID: PMC11338279 DOI: 10.1002/ctm2.1798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 07/11/2024] [Accepted: 07/26/2024] [Indexed: 08/23/2024] Open
Abstract
The human adrenal gland is a complex endocrine tissue. Studies on adrenal renewal have been limited to animal models or human foetuses. Enhancing our understanding of adult human adrenal homeostasis is crucial for gaining insights into the pathogenesis of adrenal diseases, such as adrenocortical tumours. Here, we present a comprehensive cellular genomics analysis of the adult human normal adrenal gland, combining single-nuclei RNA sequencing and spatial transcriptome data to reconstruct adrenal gland homeostasis. As expected, we identified primary cells of the various zones of the adrenal cortex and medulla, but we also uncovered additional cell types. They constitute the adrenal microenvironment, including immune cells, mostly composed of a large population of M2 macrophages, and new cell populations, including different subpopulations of vascular-endothelial cells and cortical-neuroendocrine cells. Utilizing spatial transcriptome and pseudotime trajectory analysis, we support evidence of the centripetal dynamics of adrenocortical cell maintenance and the essential role played by Wnt/β-catenin, sonic hedgehog, and fibroblast growth factor pathways in the adult adrenocortical homeostasis. Furthermore, we compared single-nuclei transcriptional profiles obtained from six healthy adrenal glands and twelve adrenocortical adenomas. This analysis unveiled a notable heterogeneity in cell populations within the adenoma samples. In addition, we identified six distinct adenoma-specific clusters, each with varying distributions based on steroid profiles and tumour mutational status. Overall, our results provide novel insights into adrenal homeostasis and molecular mechanisms potentially underlying early adrenocortical tumorigenesis and/or autonomous steroid secretion. Our cell atlas represents a powerful resource to investigate other adrenal-related pathologies.
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Affiliation(s)
- Barbara Altieri
- Division of Endocrinology and DiabetesDepartment of Internal Medicine IUniversity HospitalUniversity of WürzburgWürzburgGermany
| | - A. Kerim Secener
- Max Delbrück Center for Molecular MedicineBerlinGermany
- Berlin Institute of HealthBerlinGermany
- Department of BiologyChemistry and PharmacyInstitute of BiochemistryFree University BerlinBerlinGermany
| | - Somesh Sai
- Max Delbrück Center for Molecular MedicineBerlinGermany
- Berlin Institute of HealthBerlinGermany
- Department of BiologyChemistry and PharmacyInstitute of BiochemistryFree University BerlinBerlinGermany
| | - Cornelius Fischer
- Max Delbrück Center for Molecular MedicineBerlinGermany
- Berlin Institute of HealthBerlinGermany
| | - Silviu Sbiera
- Division of Endocrinology and DiabetesDepartment of Internal Medicine IUniversity HospitalUniversity of WürzburgWürzburgGermany
| | | | - Stefan Kircher
- Institute of PathologyUniversity of WürzburgWürzburgGermany
| | | | - Laura‐Sophie Landwehr
- Division of Endocrinology and DiabetesDepartment of Internal Medicine IUniversity HospitalUniversity of WürzburgWürzburgGermany
| | - Sarah N. Vitcetz
- Max Delbrück Center for Molecular MedicineBerlinGermany
- Berlin Institute of HealthBerlinGermany
| | | | - Martin Fassnacht
- Division of Endocrinology and DiabetesDepartment of Internal Medicine IUniversity HospitalUniversity of WürzburgWürzburgGermany
- Central Laboratory University Hospital WürzburgWürzburgGermany
| | - Cristina L. Ronchi
- Division of Endocrinology and DiabetesDepartment of Internal Medicine IUniversity HospitalUniversity of WürzburgWürzburgGermany
- Institute of Metabolism and System ResearchUniversity of BirminghamEdgabston, BirminghamUK
| | - Sascha Sauer
- Max Delbrück Center for Molecular MedicineBerlinGermany
- Berlin Institute of HealthBerlinGermany
- Core Unit SysMedUniversity of WürzburgWürzburgGermany
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Harashima S, Yamazaki Y, Motomura N, Ono Y, Omata K, Tezuka Y, Morimoto R, Nakamura Y, Satoh F, Suzuki H, Kwon GE, Choi MH, Sasano H. Phenotype-genotype correlation in aldosterone-producing adenomas characterized by intracellular cholesterol metabolism. J Steroid Biochem Mol Biol 2022; 221:106116. [PMID: 35533918 DOI: 10.1016/j.jsbmb.2022.106116] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 04/12/2022] [Accepted: 04/18/2022] [Indexed: 11/16/2022]
Abstract
Aldosterone-producing adenoma (APA) is histologically composed of clear and compact tumor cells. KCNJ5- mutated APAs were reported to be associated with higher plasma aldosterone concentration and more abundant clear tumor cells containing lipid droplets than non-KCNJ5- mutated APAs. However, the association among cholesterol uptake and/or synthesis, cellular morphology and genotypes has remained unknown. Therefore, in order to explore these differences, 52 APA cases (KCNJ5 mt: n = 33, non-KCNJ5 mt: n = 19; ATP1A1: n = 3, ATP2B3: n = 3, CACNA1D: n = 5, CTNNB1: n = 1, tumors without any mutation above: n = 7), zona glomerulosa (ZG) tissue adjacent to APA and 10 non-pathological adrenal glands (NAs) were examined for quantitative histopathological analysis of tumor morphology and immunohistochemical analysis of cholesterol receptors (SR-B1, LDL-R), cholesterol metabolic enzymes (ACAT1, ACAT2, HSL, DHCR24, StAR), and the enzymes required for steroid synthesis (CYP11A1, CYP17A, 3βHSD, CYP11B1, CYP11B2). Gas chromatography-mass spectrometry (GC-MS) analysis was further performed to profile cholesterol precursors and metabolites in 21 APA cases (KCNJ5 mt: n = 16, non-KCNJ5 mt: n = 5) and 14 adrenal cortex of adjacent adrenal tissues. Results demonstrated that both SR-B1 and DHCR24 were significantly lower in the ZG than in fasciculata or reticularis of NAs but LDL-R was not significantly different among them in immunohistochemical analysis. SR-B1 and DHCR24 were both significantly higher in APAs than in ZG tissue adjacent to APA. In GC-MS analysis, most cholesterol precursors and metabolites, except for lanosterol, and their metabolic ratios (= concentration of cholesterol/ precursor) were higher in APAs than in the adjacent adrenal cortex tissue. LDL-R, ACAT1/2, HSL, DHCR24 were all significantly lower in clear than in compact tumor cells of APA. LDL-R was significantly lower and cholesterol/lanosterol ratio was significantly higher in KCNJ5- mutated than non-KCNJ5- mutated APAs. We demonstrated SR-B1 mediated selective uptake of cholesterol ester and de novo cholesterol synthesis were both enhanced in APAs. In addition, cholesterol uptake and metabolism were different between clear and compact tumor cells. KCNJ5- mutated APAs were predominantly composed of clear tumor cells containing abundant cholesteryl ester but less activated LDL-R mediated uptake and increased de novo synthesis. Those findings above indicated their more pronounced functional deviation from the normal ZG cells in terms of their steroidogenic and intracellular cholesterol metabolism.
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Affiliation(s)
- Shogo Harashima
- Department of Pathology, National Hospital Organization Sendai medical center, Sendai, Japan; Department of Pathology, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Yuto Yamazaki
- Department of Pathology, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan.
| | - Naoki Motomura
- Department of Pathology, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Yoshikiyo Ono
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan; Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
| | - Kei Omata
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan; Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
| | - Yuta Tezuka
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan; Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
| | - Ryo Morimoto
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
| | - Yasuhiro Nakamura
- Division of Pathology, Faculty of medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Fumitoshi Satoh
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan; Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
| | - Hiroyoshi Suzuki
- Department of Pathology, National Hospital Organization Sendai medical center, Sendai, Japan
| | - Go Eun Kwon
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul, Korea
| | - Man Ho Choi
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul, Korea
| | - Hironobu Sasano
- Department of Pathology, Tohoku Graduate School of Medicine, Tohoku University, Sendai, Japan
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3
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Motomura N, Yamazaki Y, Koga D, Harashima S, Gao X, Tezuka Y, Omata K, Ono Y, Morimoto R, Satoh F, Nakamura Y, Kwon GE, Choi MH, Ito A, Sasano H. The Association of Cholesterol Uptake and Synthesis with Histology and Genotype in Cortisol-Producing Adenoma (CPA). Int J Mol Sci 2022; 23:ijms23042174. [PMID: 35216289 PMCID: PMC8875534 DOI: 10.3390/ijms23042174] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/09/2022] [Accepted: 02/14/2022] [Indexed: 11/16/2022] Open
Abstract
Cortisol-producing adenoma (CPA) is composed of clear and compact cells. Clear cells are lipid abundant, and compact ones lipid poor but associated with higher production of steroid hormones. PRKACA mutation (PRKACA mt) in CPA patients was reported to be associated with more pronounced clinical manifestation of Cushing's syndrome. In this study, we examined the association of histological features and genotypes with cholesterol uptake receptors and synthetic enzymes in 40 CPA cases, and with the quantitative results obtained by gas chromatography-mass spectrometry (GC-MS) analysis in 33 cases to explore their biological and clinical significance. Both cholesterol uptake receptors and synthetic enzymes were more abundant in compact cells. GC-MS analysis demonstrated that the percentage of compact cells was inversely correlated with the concentrations of cholesterol and cholesterol esters, and positively with the activity of cholesterol biosynthesis from cholesterol esters. In addition, hormone-sensitive lipase (HSL), which catalyzes cholesterol biosynthesis from cholesterol esters, tended to be more abundant in compact cells of PRKACA mt CPAs. These results demonstrated that both cholesterol uptake and biosynthesis were more pronounced in compact cells in CPA. In addition, more pronounced HSL expression in compact cells of PRKACA mt CPA could contribute to their more pronounced clinical manifestation.
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Affiliation(s)
- Naoki Motomura
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (N.M.); (D.K.); (S.H.); (X.G.); (H.S.)
| | - Yuto Yamazaki
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (N.M.); (D.K.); (S.H.); (X.G.); (H.S.)
- Correspondence:
| | - Daiki Koga
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (N.M.); (D.K.); (S.H.); (X.G.); (H.S.)
| | - Shogo Harashima
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (N.M.); (D.K.); (S.H.); (X.G.); (H.S.)
| | - Xin Gao
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (N.M.); (D.K.); (S.H.); (X.G.); (H.S.)
| | - Yuta Tezuka
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (Y.T.); (K.O.); (Y.O.); (F.S.)
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai 980-8574, Japan;
| | - Kei Omata
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (Y.T.); (K.O.); (Y.O.); (F.S.)
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai 980-8574, Japan;
| | - Yoshikiyo Ono
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (Y.T.); (K.O.); (Y.O.); (F.S.)
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai 980-8574, Japan;
| | - Ryo Morimoto
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai 980-8574, Japan;
| | - Fumitoshi Satoh
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (Y.T.); (K.O.); (Y.O.); (F.S.)
- Division of Nephrology, Endocrinology and Vascular Medicine, Tohoku University Hospital, Sendai 980-8574, Japan;
| | - Yasuhiro Nakamura
- Division of Pathology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan;
| | - Go Eun Kwon
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (G.E.K.); (M.H.C.)
| | - Man Ho Choi
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (G.E.K.); (M.H.C.)
| | - Akihiro Ito
- Department of Urology, Tohoku University School of Medicine, Sendai 980-8574, Japan;
| | - Hironobu Sasano
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (N.M.); (D.K.); (S.H.); (X.G.); (H.S.)
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Revilla G, Cedó L, Tondo M, Moral A, Pérez JI, Corcoy R, Lerma E, Fuste V, Reddy ST, Blanco-Vaca F, Mato E, Escolà-Gil JC. LDL, HDL and endocrine-related cancer: From pathogenic mechanisms to therapies. Semin Cancer Biol 2020; 73:134-157. [PMID: 33249202 DOI: 10.1016/j.semcancer.2020.11.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 10/19/2020] [Accepted: 11/16/2020] [Indexed: 02/07/2023]
Abstract
Cholesterol is essential for a variety of functions in endocrine-related cells, including hormone and steroid production. We have reviewed the progress to date in research on the role of the main cholesterol-containing lipoproteins; low-density lipoprotein (LDL) and high-density lipoprotein (HDL), and their impact on intracellular cholesterol homeostasis and carcinogenic pathways in endocrine-related cancers. Neither LDL-cholesterol (LDL-C) nor HDL-cholesterol (HDL-C) was consistently associated with endocrine-related cancer risk. However, preclinical studies showed that LDL receptor plays a critical role in endocrine-related tumor cells, mainly by enhancing circulating LDL-C uptake and modulating tumorigenic signaling pathways. Although scavenger receptor type BI-mediated uptake of HDL could enhance cell proliferation in breast, prostate, and ovarian cancer, these effects may be counteracted by the antioxidant and anti-inflammatory properties of HDL. Moreover, 27-hydroxycholesterol a metabolite of cholesterol promotes tumorigenic processes in breast and epithelial thyroid cancer. Furthermore, statins have been reported to reduce the incidence of breast, prostate, pancreatic, and ovarian cancer in large clinical trials, in part because of their ability to lower cholesterol synthesis. Overall, cholesterol homeostasis deregulation in endocrine-related cancers offers new therapeutic opportunities, but more mechanistic studies are needed to translate the preclinical findings into clinical therapies.
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Affiliation(s)
- Giovanna Revilla
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain; Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, C/ Antoni M. Claret 167, 08025 Barcelona, Spain
| | - Lídia Cedó
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), C/ Monforte de Lemos 3-5, 28029 Madrid, Spain
| | - Mireia Tondo
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain; Servei de Bioquímica, Hospital de la Santa Creu i Sant Pau, C/ Sant Quintí 89, 08041 Barcelona, Spain
| | - Antonio Moral
- Department of General Surgery, Hospital de la Santa Creu i Sant Pau, C/ Sant Quintí 89, 08041 Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, C/ Antoni M. Claret 167, 08025 Barcelona, Spain
| | - José Ignacio Pérez
- Department of General Surgery, Hospital de la Santa Creu i Sant Pau, C/ Sant Quintí 89, 08041 Barcelona, Spain
| | - Rosa Corcoy
- Departament de Medicina, Universitat Autònoma de Barcelona, C/ Antoni M. Claret 167, 08025 Barcelona, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), C/ Monforte de Lemos 3-5, 28029 Madrid, Spain; Department of Endocrinology and Nutrition, Hospital de la Santa Creu i Sant Pau, C/ Sant Quintí 89, 08041 Barcelona, Spain
| | - Enrique Lerma
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain; Department of Anatomic Pathology, Hospital de la Santa Creu i Sant Pau, C/ Sant Quintí 89, 08041 Barcelona, Spain
| | - Victoria Fuste
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain; Department of Anatomic Pathology, Hospital de la Santa Creu i Sant Pau, C/ Sant Quintí 89, 08041 Barcelona, Spain
| | - Srivinasa T Reddy
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA, 90095-1736, USA
| | - Francisco Blanco-Vaca
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain; Servei de Bioquímica, Hospital de la Santa Creu i Sant Pau, C/ Sant Quintí 89, 08041 Barcelona, Spain.
| | - Eugènia Mato
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), C/ Monforte de Lemos 3-5, 28029 Madrid, Spain.
| | - Joan Carles Escolà-Gil
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau, Institut d'Investigacions Biomèdiques (IIB) Sant Pau, C/ Sant Quintí 77, 08041 Barcelona Spain.
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London E, Tatsi C, Soldin SJ, Wassif CA, Backlund P, Ng D, Biesecker LG, Stratakis CA. Acute Statin Administration Reduces Levels of Steroid Hormone Precursors. Horm Metab Res 2020; 52:742-746. [PMID: 32040961 PMCID: PMC7495505 DOI: 10.1055/a-1099-9556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Cholesterol-lowering statin drugs are used by approximately 25% of US adults 45 years of age and older and frequency of use is even higher among the elderly. Cholesterol provides the substrate for steroid hormone synthesis and its intracellular concentrations are tightly regulated. Our aim was to evaluate whether statin use acutely changes the circulating levels of cortisol, other glucocorticoid precursor molecules and their metabolites. Fourteen subjects not taking statins were administered a single oral dose (2 mg) of pitavastatin. Blood samples collected at baseline and 24 h post-treatment were analyzed for plasma cholesterol and steroid hormone profile. A parallel study in mice entailed the administration of atorvastatin (10 mg/kg) via orogastric delivery for three consecutive days. Cholesterol and corticosterone levels were quantified at baseline and at 1-day and 1-week post-treatment. Several precursor molecules in the steroidogenic pathway (corticosterone, cortisone, and 11-deoxycortisol) were significantly decreased 24 h after administration of a single dose of pitavastatin in human study subjects. Their circulating cholesterol concentrations were unchanged. In mice, there were no significant differences in serum cholesterol or corticosterone at 1-day or 1-week post-treatment compared to both pre-treatment baseline levels and control group levels. We conclude that acute dysregulation of the production of certain glucocorticoid precursor molecules was observed after a single treatment with a lipophilic statin drug. This may be of clinical relevance for individuals with underlying or subclinical adrenal insufficiency.
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Affiliation(s)
- Edra London
- Section on Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, USA
| | - Christina Tatsi
- Section on Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, USA
| | | | - Christopher A. Wassif
- Section on Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, USA
| | - Peter Backlund
- Biomedical Mass Spectrometry Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, USA
| | - David Ng
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland, USA
| | - Leslie G. Biesecker
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, Maryland, USA
| | - Constantine A. Stratakis
- Section on Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, USA
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Jefcoate CR, Lee J. Cholesterol signaling in single cells: lessons from STAR and sm-FISH. J Mol Endocrinol 2018; 60:R213-R235. [PMID: 29691317 PMCID: PMC6324173 DOI: 10.1530/jme-17-0281] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 03/06/2018] [Indexed: 12/11/2022]
Abstract
Cholesterol is an important regulator of cell signaling, both through direct impacts on cell membranes and through oxy-metabolites that activate specific receptors (steroids, hydroxy-cholesterols, bile acids). Cholesterol moves slowly through and between cell membranes with the assistance of specific binding proteins and transfer processes. The prototype cholesterol regulator is the Steroidogenesis Acute Regulatory (STAR), which moves cholesterol into mitochondria, where steroid synthesis is initiated by cytochrome P450 11A1 in multiple endocrine cell types. CYP27A1 generates hydroxyl cholesterol metabolites that activate LXR nuclear receptors to control cholesterol homeostatic and transport mechanisms. LXR regulation of cholesterol transport and storage as cholesterol ester droplets is shared by both steroid-producing cells and macrophage. This cholesterol signaling is crucial to brain neuron regulation by astrocytes and microglial macrophage, mediated by ApoE and sensitive to disruption by β-amyloid plaques. sm-FISH delivers appreciable insights into signaling in single cells, by resolving single RNA molecules as mRNA and by quantifying pre-mRNA at gene loci. sm-FISH has been applied to problems in physiology, embryo development and cancer biology, where single cell features have critical impacts. sm-FISH identifies novel features of STAR transcription in adrenal and testis cells, including asymmetric expression at individual gene loci, delayed splicing and 1:1 association of mRNA with mitochondria. This may represent a functional unit for the translation-dependent cholesterol transfer directed by STAR, which integrates into mitochondrial fusion dynamics. Similar cholesterol dynamics repeat with different players in the cycling of cholesterol between astrocytes and neurons in the brain, which may be abnormal in neurodegenerative diseases.
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Affiliation(s)
- Colin R Jefcoate
- Department of Cell and Regenerative Biology and the Endocrinology and Reproductive Physiology ProgramUniversity of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Jinwoo Lee
- Department of Cell and Regenerative Biology and the Endocrinology and Reproductive Physiology ProgramUniversity of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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7
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Response surface optimization of cholesterol extraction from lanolin alcohol by selective solvent crystallization. CHEMICAL PAPERS 2016. [DOI: 10.1007/s11696-016-0043-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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