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Miranda M, Avila I, Esparza J, Shwartz Y, Hsu YC, Berdeaux R, Lowry WE. Defining a Role for G-Protein Coupled Receptor/cAMP/CRE-Binding Protein Signaling in Hair Follicle Stem Cell Activation. J Invest Dermatol 2022; 142:53-64.e3. [PMID: 34280464 PMCID: PMC8989631 DOI: 10.1016/j.jid.2021.05.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 01/03/2023]
Abstract
Manipulation of adrenergic signaling has been shown experimentally and clinically to affect hair follicle growth. In this study, we provide direct evidence that canonical cAMP/CRE-binding protein signaling through adrenergic receptors can regulate hair follicle stem cell (HFSC) activation and hair cycle. We found that CRE-binding protein activation is regulated through the hair cycle and coincides with HFSC activation. Both isoproterenol and procaterol, agonists of adrenergic receptors, show the capacity to activate the hair cycle in mice. Furthermore, deletion of ADRB2 receptor, which is thought to mediate sympathetic nervous system regulation of HFSCs, was sufficient to block HFSC activation. Downstream, stimulation of adenylyl cyclase with forskolin or inhibition of phosphodiesterase to increase cAMP accumulation or direct application of cAMP was each sufficient to promote HFSC activation and accelerate initiation of hair cycle. Genetic induction of a Designer Receptors Exclusively Activated by Designer Drug allele showed that G-protein coupled receptor/GαS stimulation, specifically in HFSCs, promoted the activation of the hair cycle. Finally, we provide evidence that G-protein coupled receptor/CRE-binding protein signaling can potentially act on HFSCs by promoting glycolytic metabolism, which was previously shown to stimulate HFSC activation. Together, these data provide mechanistic insights into the role of sympathetic innervation on HFSC function.
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Affiliation(s)
- M Miranda
- Molecular Biology Institute, UCLA, Los Angeles, CA 90095
| | - I Avila
- Department of Molecular Cell and Developmental Biology, UCLA, Los Angeles, CA 90095
| | - J Esparza
- Department of Molecular Cell and Developmental Biology, UCLA, Los Angeles, CA 90095
| | - Y Shwartz
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138
| | - YC Hsu
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA 02138
| | - R Berdeaux
- Integrative Biology and Pharmacology, University of Texas Health Science Center at Houston
| | - WE Lowry
- Molecular Biology Institute, UCLA, Los Angeles, CA 90095, Department of Molecular Cell and Developmental Biology, UCLA, Los Angeles, CA 90095, Division of Dermatology, DGSOM, UCLA, Los Angeles, CA 90095, Broad Center for Regenerative Medicine, UCLA, Los Angeles, CA 90095, Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA 90095
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Guddeti RK, Thomas L, Kannan A, Karyala P, Pakala SB. The chromatin modifier MORC2 affects glucose metabolism by regulating the expression of lactate dehydrogenase A through a feed forward loop with c-Myc. FEBS Lett 2021; 595:1289-1302. [PMID: 33626175 DOI: 10.1002/1873-3468.14062] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 02/02/2021] [Accepted: 02/15/2021] [Indexed: 12/26/2022]
Abstract
Microrchidia family CW-type zinc finger 2 (MORC2) is a recently identified chromatin modifier with an emerging role in cancer metastasis. However, its role in glucose metabolism, a hallmark of malignancy, remains to be explored. We found that MORC2 is a glucose-inducible gene and a target of c-Myc. Our meta-analysis revealed that MORC2 expression is positively correlated with the expression of enzymes involved in glucose metabolism in breast cancer patients. Furthermore, overexpression of MORC2 in MCF-7 and BT-549 cells augmented the expression and activity of a key glucose metabolism enzyme, lactate dehydrogenase A (LDHA). Conversely, selective knockdown of MORC2 by siRNA markedly decreased LDHA expression and activity and in turn reduced cancer cell migration. Collectively, these findings provide evidence that MORC2, a glucose-inducible gene, modulates the migration of breast cancer cells through the MORC2-c-Myc-LDHA axis.
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Affiliation(s)
- Rohith Kumar Guddeti
- Biology Division, Indian Institute of Science Education and Research (IISER) Tirupati, India
| | - Liz Thomas
- Biology Division, Indian Institute of Science Education and Research (IISER) Tirupati, India
| | - Anbarasu Kannan
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru, India
| | - Prashanthi Karyala
- Department of Biochemistry, Indian Academy Degree College Autonomous, Bengaluru, India
| | - Suresh B Pakala
- Biology Division, Indian Institute of Science Education and Research (IISER) Tirupati, India
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McCarthy SD, Waters SM, Kenny DA, Diskin MG, Fitzpatrick R, Patton J, Wathes DC, Morris DG. Negative energy balance and hepatic gene expression patterns in high-yielding dairy cows during the early postpartum period: a global approach. Physiol Genomics 2010; 42A:188-99. [PMID: 20716645 PMCID: PMC3008362 DOI: 10.1152/physiolgenomics.00118.2010] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In high-yielding dairy cows the liver undergoes extensive physiological and biochemical changes during the early postpartum period in an effort to re-establish metabolic homeostasis and to counteract the adverse effects of negative energy balance (NEB). These adaptations are likely to be mediated by significant alterations in hepatic gene expression. To gain new insights into these events an energy balance model was created using differential feeding and milking regimes to produce two groups of cows with either a mild (MNEB) or severe NEB (SNEB) status. Cows were slaughtered and liver tissues collected on days 6–7 of the first follicular wave postpartum. Using an Affymetrix 23k oligonucleotide bovine array to determine global gene expression in hepatic tissue of these cows, we found a total of 416 genes (189 up- and 227 downregulated) to be altered by SNEB. Network analysis using Ingenuity Pathway Analysis revealed that SNEB was associated with widespread changes in gene expression classified into 36 gene networks including those associated with lipid metabolism, connective tissue development and function, cell signaling, cell cycle, and metabolic diseases, the three most significant of which are discussed in detail. SNEB cows displayed reduced expression of transcription activators and signal transducers that regulate the expression of genes and gene networks associated with cell signaling and tissue repair. These alterations are linked with increased expression of abnormal cell cycle and cellular proliferation associated pathways. This study provides new information and insights on the effect of SNEB on gene expression in high-yielding Holstein Friesian dairy cows in the early postpartum period.
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Affiliation(s)
- S D McCarthy
- Teagasc, Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Mellows Campus, Athenry, County Galway, Ireland
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Lee KKH, Kwong WH, Chau FT, Yew DT, Chan WY. Pien Tze Huang protects the liver against carbon tetrachloride-induced damage. PHARMACOLOGY & TOXICOLOGY 2002; 91:185-92. [PMID: 12530469 DOI: 10.1034/j.1600-0773.2002.910406.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Pien Tze Huang, a traditional Chinese medicine, has been extensively used as a therapeutic drug in the treatment of liver diseases. In this study, we have examined its ability to protect the liver from carbon tetrachloride (CCl4)-induced damage in the mouse. Histological observations revealed that CCl4 treatment induced extensive degenerative changes in the hepatocytes surrounding the central veins of the liver. However, these changes were much reduced by more than 28% in mice fed with 0.5 mg of Pien Tze Huang/g body weight/dose (3 doses over 36 hr) prior to CCl4 treatment. The effects of Pien Tze Huang were then further investigated in a hepatoma cell line. Flow analysis showed that it had no significant effects on cell proliferation. When the ability of Pien Tze Huang to influence various response elements of important signal transduction pathways was examined in the hepatoma cell line, it was found that Pien Tze Huang stimulated an increase in the response of AP1, CRE and NFkappaB responsive elements. The transcriptional factors of these responsive elements are known to play important roles in regulating cell death and survival. We thus postulate that the ability of Pien Tze Huang to protect the liver from damage is attained through its ability to modulate the activity of these important signal transduction pathways.
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Affiliation(s)
- Kenneth K H Lee
- Department of Anatomy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China
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Affiliation(s)
- H Gadgil
- Department of Biochemistry, University of Tennessee, 858 Madison Avenue, Memphis, Tennessee 38163, USA
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