1
|
Zheng Y, Ye C, He M, Ko WKW, Chan YW, Wong AOL. Goldfish adiponectin: (I) molecular cloning, tissue distribution, recombinant protein expression, and novel function as a satiety factor in fish model. Front Endocrinol (Lausanne) 2023; 14:1283298. [PMID: 38027109 PMCID: PMC10643153 DOI: 10.3389/fendo.2023.1283298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/06/2023] [Indexed: 12/01/2023] Open
Abstract
Adiponectin (AdipoQ) is an adipokine involved in glucose homeostasis and lipid metabolism. In mammals, its role in appetite control is highly controversial. To shed light on the comparative aspects of AdipoQ in lower vertebrates, goldfish was used as a model to study feeding regulation by AdipoQ in fish species. As a first step, goldfish AdipoQ was cloned and found to be ubiquitously expressed at the tissue level. Using sequence alignment, protein modeling, phylogenetic analysis and comparative synteny, goldfish AdipoQ was shown to be evolutionarily related to its fish counterparts and structurally comparable with AdipoQ in higher vertebrates. In our study, recombinant goldfish AdipoQ was expressed in E. coli, purified by IMAC, and confirmed to be bioactive via activation of AdipoQ receptors expressed in HepG2 cells. Feeding in goldfish revealed that plasma levels of AdipoQ and its transcript expression in the liver and brain areas involved in appetite control including the telencephalon, optic tectum, and hypothalamus could be elevated by food intake. In parallel studies, IP and ICV injection of recombinant goldfish AdipoQ in goldfish was effective in reducing foraging behaviors and food consumption. Meanwhile, transcript expression of orexigenic factors (NPY, AgRP, orexin, and apelin) was suppressed with parallel rises in anorexigenic factors (POMC, CART, CCK, and MCH) in the telencephalon, optic tectum and/or hypothalamus. In these brain areas, transcript signals for leptin receptor were upregulated with concurrent drops in the NPY receptor and ghrelin receptors. In the experiment with IP injection of AdipoQ, transcript expression of leptin was also elevated with a parallel drop in ghrelin mRNA in the liver. These findings suggest that AdipoQ can act as a novel satiety factor in goldfish. In this case, AdipoQ signals (both central and peripheral) can be induced by feeding and act within the brain to inhibit feeding behaviors and food intake via differential regulation of orexigenic/anorexigenic factors and their receptors. The feeding inhibition observed may also involve the hepatic action of AdipoQ by modulation of feeding regulators expressed in the liver.
Collapse
Affiliation(s)
| | | | | | | | | | - Anderson O. L. Wong
- School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| |
Collapse
|
2
|
Pei X, Li H, Yu H, Wang W, Mao D. APN Expression in Serum and Corpus Luteum: Regulation of Luteal Steroidogenesis Is Possibly Dependent on the AdipoR2/AMPK Pathway in Goats. Cells 2023; 12:1393. [PMID: 37408227 DOI: 10.3390/cells12101393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/23/2023] [Accepted: 05/09/2023] [Indexed: 07/07/2023] Open
Abstract
Adiponectin (APN) is an essential adipokine for a variety of reproductive processes. To investigate the role of APN in goat corpora lutea (CLs), CLs and sera from different luteal phases were collected for analysis. The results showed that the APN structure and content had no significant divergence in different luteal phases both in CLs and sera; however, high molecular weight APN was dominant in serum, while low molecular weight APN was more present in CLs. The luteal expression of both AdipoR1/2 and T-cadherin (T-Ca) increased on D11 and 17. APN and its receptors (AdipoR1/2 and T-Ca) were mainly expressed in goat luteal steroidogenic cells. The steroidogenesis and APN structure in pregnant CLs had a similar model as in the mid-cycle CLs. To further explore the effects and mechanisms of APN in CLs, steroidogenic cells from pregnant CLs were isolated to detect the AMPK-mediated pathway by the activation of APN (AdipoRon) and knockdown of APN receptors. The results revealed that P-AMPK in goat luteal cells increased after incubation with APN (1 μg/mL) or AdipoRon (25 μM) for 1 h, and progesterone (P4) and steroidogenic proteins levels (STAR/CYP11A1/HSD3B) decreased after 24 h. APN did not affect the steroidogenic protein expression when cells were pretreated with Compound C or SiAMPK. APN increased P-AMPK and reduced the CYP11A1 expression and P4 levels when cells were pretreated with SiAdipoR1 or SiT-Ca, while APN failed to affect P-AMPK, the CYP11A1 expression or the P4 levels when pretreated with SiAdipoR2. Therefore, the different structural forms of APN in CLs and sera may possess distinct functions; APN might regulate luteal steroidogenesis through AdipoR2 which is most likely dependent on AMPK.
Collapse
Affiliation(s)
- Xiaomeng Pei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Haolin Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Hao Yu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Dagan Mao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| |
Collapse
|
3
|
Complement 1q/Tumor Necrosis Factor-Related Proteins (CTRPs): Structure, Receptors and Signaling. Biomedicines 2023; 11:biomedicines11020559. [PMID: 36831095 PMCID: PMC9952994 DOI: 10.3390/biomedicines11020559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/10/2023] [Accepted: 02/11/2023] [Indexed: 02/17/2023] Open
Abstract
Adiponectin and the other 15 members of the complement 1q (C1q)/tumor necrosis factor (TNF)-related protein (CTRP) family are secreted proteins composed of an N-terminal variable domain followed by a stalk region and a characteristic C-terminal trimerizing globular C1q (gC1q) domain originally identified in the subunits of the complement protein C1q. We performed a basic PubMed literature search for articles mentioning the various CTRPs or their receptors in the abstract or title. In this narrative review, we briefly summarize the biology of CTRPs and focus then on the structure, receptors and major signaling pathways of CTRPs. Analyses of CTRP knockout mice and CTRP transgenic mice gave overwhelming evidence for the relevance of the anti-inflammatory and insulin-sensitizing effects of CTRPs in autoimmune diseases, obesity, atherosclerosis and cardiac dysfunction. CTRPs form homo- and heterotypic trimers and oligomers which can have different activities. The receptors of some CTRPs are unknown and some receptors are redundantly targeted by several CTRPs. The way in which CTRPs activate their receptors to trigger downstream signaling pathways is largely unknown. CTRPs and their receptors are considered as promising therapeutic targets but their translational usage is still hampered by the limited knowledge of CTRP redundancy and CTRP signal transduction.
Collapse
|
4
|
Suh JH, Lee Y, Ohn J, Kim EJ, Kim TG, Jo SJ, Kim SJ, Chung JH. Adiponectin-derived pentapeptide ameliorates psoriasiform skin inflammation by suppressing IL-17 production in γδT cells. J Dermatol Sci 2022; 106:45-52. [DOI: 10.1016/j.jdermsci.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 03/03/2022] [Accepted: 03/13/2022] [Indexed: 11/29/2022]
|
5
|
Ohn J, Been KW, Kim JY, Kim EJ, Park T, Yoon H, Ji JS, Okada‐Iwabu M, Iwabu M, Yamauchi T, Kim YK, Seok C, Kwon O, Kim KH, Lee HH, Chung JH. Discovery of a transdermally deliverable pentapeptide for activating AdipoR1 to promote hair growth. EMBO Mol Med 2021; 13:e13790. [PMID: 34486824 PMCID: PMC8495455 DOI: 10.15252/emmm.202013790] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 07/30/2021] [Accepted: 08/20/2021] [Indexed: 11/09/2022] Open
Abstract
Alopecia induced by aging or side effects of medications affects millions of people worldwide and impairs the quality of life; however, there is a limit to the current medications. Here, we identify a small transdermally deliverable 5-mer peptide (GLYYF; P5) that activates adiponectin receptor 1 (AdipoR1) and promotes hair growth. P5 sufficiently reproduces the biological effect of adiponectin protein via AMPK signaling pathway, increasing the expression of hair growth factors in the dermal papilla cells of human hair follicle. P5 accelerates hair growth ex vivo and induces anagen hair cycle in mice in vivo. Furthermore, we elucidate a key spot for the binding between AdipoR1 and adiponectin protein using docking simulation and mutagenesis studies. This study suggests that P5 could be used as a topical peptide drug for alleviating pathological conditions, which can be improved by adiponectin protein, such as alopecia.
Collapse
Affiliation(s)
- Jungyoon Ohn
- Department of Translational MedicineSeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University HospitalSeoulKorea
- Institute of Human‐Environment Interface BiologySeoul National UniversitySeoulKorea
| | - Kyung Wook Been
- Department of ChemistryCollege of Natural SciencesSeoul National UniversitySeoulKorea
| | - Jin Yong Kim
- Department of DermatologySeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University HospitalSeoulKorea
- Institute of Human‐Environment Interface BiologySeoul National UniversitySeoulKorea
| | - Eun Ju Kim
- Department of DermatologySeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University HospitalSeoulKorea
- Institute of Human‐Environment Interface BiologySeoul National UniversitySeoulKorea
| | - Taeyong Park
- Department of ChemistryCollege of Natural SciencesSeoul National UniversitySeoulKorea
| | - Hye‐Jin Yoon
- Department of ChemistryCollege of Natural SciencesSeoul National UniversitySeoulKorea
| | - Jeong Seok Ji
- Department of ChemistryCollege of Natural SciencesSeoul National UniversitySeoulKorea
| | - Miki Okada‐Iwabu
- Department of Diabetes and Metabolic DiseasesGraduate School of MedicineThe University of TokyoTokyoJapan
| | - Masato Iwabu
- Department of Diabetes and Metabolic DiseasesGraduate School of MedicineThe University of TokyoTokyoJapan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic DiseasesGraduate School of MedicineThe University of TokyoTokyoJapan
| | - Yeon Kyung Kim
- Department of DermatologySeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University HospitalSeoulKorea
- Institute of Human‐Environment Interface BiologySeoul National UniversitySeoulKorea
| | - Chaok Seok
- Department of ChemistryCollege of Natural SciencesSeoul National UniversitySeoulKorea
| | - Ohsang Kwon
- Department of DermatologySeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University HospitalSeoulKorea
- Institute of Human‐Environment Interface BiologySeoul National UniversitySeoulKorea
| | - Kyu Han Kim
- Department of Translational MedicineSeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University HospitalSeoulKorea
- Institute of Human‐Environment Interface BiologySeoul National UniversitySeoulKorea
| | - Hyung Ho Lee
- Department of ChemistryCollege of Natural SciencesSeoul National UniversitySeoulKorea
| | - Jin Ho Chung
- Department of DermatologySeoul National University College of MedicineSeoulKorea
- Department of DermatologySeoul National University HospitalSeoulKorea
- Institute of Human‐Environment Interface BiologySeoul National UniversitySeoulKorea
| |
Collapse
|
6
|
Molecular mechanism of calcium induced trimerization of C1q-like domain of otolin-1 from human and zebrafish. Sci Rep 2021; 11:12778. [PMID: 34140580 PMCID: PMC8211825 DOI: 10.1038/s41598-021-92129-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/24/2021] [Indexed: 02/05/2023] Open
Abstract
The C1q superfamily includes proteins involved in innate immunity, insulin sensitivity, biomineralization and more. Among these proteins is otolin-1, which is a collagen-like protein that forms a scaffold for the biomineralization of inner ear stones in vertebrates. The globular C1q-like domain (gC1q), which is the most conserved part of otolin-1, binds Ca2+ and stabilizes its collagen-like triple helix. The molecular details of the assembly of gC1q otolin-1 trimers are not known. Here, we substituted putative Ca2+-binding acidic residues of gC1q otolin-1 with alanine to analyse how alanine influences the formation of gC1q trimers. We used human and zebrafish gC1q otolin-1 to assess how evolutionary changes affected the function of the protein. Surprisingly, the mutated forms of gC1q otolin-1 trimerized even in the absence of Ca2+, although they were less stable than native proteins saturated with Ca2+. We also found that the zebrafish gC1q domain was less stable than the human homologue under all tested conditions and became stabilized at higher concentrations of Ca2+, which showed that specific interactions leading to the neutralization of the negative charge at the axis of a gC1q trimer by Ca2+ are required for the trimers to form. Moreover, human gC1q otolin-1 seems to be optimized to function at lower concentrations of Ca2+, which is consistent with reported Ca2+ concentrations in the endolymphs of fish and mammals. Our results allow us to explain the molecular mechanism of assembly of proteins from the C1q superfamily, the modulating role of Ca2+ and expand the knowledge of biomineralization of vertebrate inner ear stones: otoliths and otoconia.
Collapse
|
7
|
Rubina KA, Sabitova NR, Efimenko AY, Kalinina NI, Akopyan JA, Semina EV. Proteolytic enzyme and adiponectin receptors as potential targets for COVID-19 therapy. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2021. [DOI: 10.15829/1728-8800-2021-2791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic requires not only the creation of vaccines to prevent the spread of the disease, but also the development of novel drugs aimed at reducing viral load, suppressing an excessive immune response and preventing the severe complications such as lung fibrosis and acute respiratory distress syndrome. One of the promising targets for studying the development of pneumonia, systemic inflammation and disseminated intravascular coagulation in COVID-19 is the plasminogen activator system. In patients with a severe disease course, impaired activity or expression of plasminogen activators significantly increases the blood level of D-dimer and fibrinogen, as well as correlates with intravascular coagulation and thrombus formation. The second promising target for studying the pathogenesis of COVID-19 is the adiponectin/T-cadherin system: adiponectin is able to reduce the content of pro-inflammatory cytokines, the increase of which is characteristic of COVID-19, and stimulate the production of an anti-inflammatory cytokine interleukin-10. The review describes the role of plasminogen and T-cadherin activators in their possible participation in the development of pulmonary fibrosis in COVID-19 and hemostasis regulation, as well as cardio- and vasculoprotective function of adiponectin and its receptor, T-cadherin.
Collapse
Affiliation(s)
- K. A. Rubina
- Lomonosov Moscow State University, Faculty of Fundamental Medicine
| | - N. R. Sabitova
- Lomonosov Moscow State University, Faculty of Fundamental Medicine
| | - A. Yu. Efimenko
- Lomonosov Moscow State University, Faculty of Fundamental Medicine; Lomonosov Moscow State University, Institute of Regenerative Medicine, Medical Research and Educational Center
| | - N. I. Kalinina
- Lomonosov Moscow State University, Faculty of Fundamental Medicine; Lomonosov Moscow State University, Institute of Regenerative Medicine, Medical Research and Educational Center
| | - J. A. Akopyan
- Lomonosov Moscow State University, Faculty of Fundamental Medicine; Lomonosov Moscow State University, Institute of Regenerative Medicine, Medical Research and Educational Center
| | - E. V. Semina
- National Medical Research Center of Cardiology; Lomonosov Moscow State University, Faculty of Fundamental Medicine
| |
Collapse
|
8
|
Xu H, Zhao Q, Song N, Yan Z, Lin R, Wu S, Jiang L, Hong S, Xie J, Zhou H, Wang R, Jiang X. AdipoR1/AdipoR2 dual agonist recovers nonalcoholic steatohepatitis and related fibrosis via endoplasmic reticulum-mitochondria axis. Nat Commun 2020; 11:5807. [PMID: 33199780 PMCID: PMC7669869 DOI: 10.1038/s41467-020-19668-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 10/27/2020] [Indexed: 12/13/2022] Open
Abstract
Chronic nonalcoholic steatohepatitis (NASH) is a metabolic disorder that often leads to liver fibrosis, a condition with limited therapy options. Adiponectin is an adipocytokine that regulates glucose and lipid metabolism via binding to its receptors AdipoR1 and AdipoR2, and AdipoRs signaling is reported to enhance fatty acid oxidation and glucose uptake. Here, we synthesize and report an adiponectin-based agonist JT003, which potently improves insulin resistance in high fat diet induced NASH mice and suppresses hepatic stellate cells (HSCs) activation in CCl4 induced liver fibrosis. Mechanistic studies indicate that JT003 simultaneously stimulates AdipoR1- and AdipoR2- mediated signaling pathways as well as the PI3K-Akt pathway. Moreover, JT003 treatment significantly improves ER-mitochondrial axis function, which contributes to the reduced HSCs activation. Thus, the AdipoR1/AdipoR2 dual agonist improves both NASH and fibrosis in mice models, which provides the pharmacological and biological foundation for developing AdipoRs-based therapeutic agents on liver fibrosis. Nonalcoholic steatohepatitis (NASH) and associated liver fibrosis have limited therapy options. Here the authors report a novel adiponectin-based dual agonist for adiponectin receptors 1 and 2 with a longer half-life, and show that it ameliorates NASH and liver fibrosis in mouse models.
Collapse
Affiliation(s)
- Hongjiao Xu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Qian Zhao
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Nazi Song
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Zhibin Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Runfeng Lin
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Shuohan Wu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Lili Jiang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Sihua Hong
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Junqiu Xie
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Huihao Zhou
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Xianxing Jiang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China.
| |
Collapse
|
9
|
Ye JJ, Bian X, Lim J, Medzhitov R. Adiponectin and related C1q/TNF-related proteins bind selectively to anionic phospholipids and sphingolipids. Proc Natl Acad Sci U S A 2020; 117:17381-17388. [PMID: 32632018 PMCID: PMC7382265 DOI: 10.1073/pnas.1922270117] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Adiponectin (Acrp30) is an adipokine associated with protection from cardiovascular disease, insulin resistance, and inflammation. Although its effects are conventionally attributed to binding Adipor1/2 and T-cadherin, its abundance in circulation, role in ceramide metabolism, and homology to C1q suggest an overlooked role as a lipid-binding protein, possibly generalizable to other C1q/TNF-related proteins (CTRPs) and C1q family members. To investigate this, adiponectin, representative family members, and variants were expressed in Expi293 cells and tested for binding to lipids in liposomes using density centrifugation. Binding to physiological lipids were also analyzed using gradient ultracentrifugation, liquid chromatography-mass spectrometry, and shotgun lipidomics. Interestingly, adiponectin selectively bound several anionic phospholipids and sphingolipids, including phosphatidylserine, ceramide-1-phosphate, glucosylceramide, and sulfatide, via the C1q domain in an oligomerization-dependent fashion. Binding to lipids was observed in liposomes, low-density lipoproteins, cell membranes, and plasma. Other CTRPs and C1q family members (Cbln1, CTRP1, CTRP5, and CTRP13) also bound similar lipids. These findings suggest that adiponectin and CTRPs function not only as hormones, but also as lipid opsonins, as may other C1q family proteins.
Collapse
Affiliation(s)
- Jessica J Ye
- HHMI, Yale University, New Haven, CT 06520
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520
| | - Xin Bian
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06520
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT 06520
| | - Jaechul Lim
- HHMI, Yale University, New Haven, CT 06520
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520
| | - Ruslan Medzhitov
- HHMI, Yale University, New Haven, CT 06520;
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520
| |
Collapse
|
10
|
Pascolutti R, Erlandson SC, Burri DJ, Zheng S, Kruse AC. Mapping and engineering the interaction between adiponectin and T-cadherin. J Biol Chem 2020; 295:2749-2759. [PMID: 31915248 PMCID: PMC7049961 DOI: 10.1074/jbc.ra119.010970] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/19/2019] [Indexed: 11/06/2022] Open
Abstract
Adiponectin is a highly abundant protein hormone secreted by adipose tissue. It elicits diverse biological responses, including anti-diabetic, anti-inflammatory, anti-tumor, and anti-atherosclerotic effects. Adiponectin consists of a globular domain and a collagen-like domain, and it occurs in three major oligomeric forms that self-assemble: trimers, hexamers, and high-molecular-weight oligomers. Adiponectin has been reported to bind to two seven-transmembrane domain receptors, AdipoR1 and AdipoR2, as well as to the protein T-cadherin, which is highly expressed in the cardiovascular system and binds only the high-molecular-weight form of adiponectin. The molecular mechanisms underlying this specificity remain unclear. Here we used a combination of X-ray crystallography and protein engineering to define the details of adiponectin's interaction with T-cadherin. We found that T-cadherin binds to the globular domain of adiponectin, relying on structural stabilization of this domain by bound metal ions. Moreover, we show that the adiponectin globular domain can be engineered to enhance its binding affinity for T-cadherin. These results help to define the molecular basis for the interaction between adiponectin and T-cadherin, and our engineered globular domain variants may be useful tools for further investigating adiponectin's functions.
Collapse
Affiliation(s)
- Roberta Pascolutti
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115
| | - Sarah C Erlandson
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115
| | - Dominique J Burri
- Department of Microbiology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115
| | - Sanduo Zheng
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115
| | - Andrew C Kruse
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115.
| |
Collapse
|
11
|
Potential Roles of Adiponectin Isoforms in Human Obesity with Delayed Wound Healing. Cells 2019; 8:cells8101134. [PMID: 31554182 PMCID: PMC6830100 DOI: 10.3390/cells8101134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 09/20/2019] [Accepted: 09/21/2019] [Indexed: 01/28/2023] Open
Abstract
Adiponectin is an adipokine with anti-insulin resistance and anti-inflammatory functions. It exists in serum predominantly in three multimeric complexes: the trimer, hexamer, and high-molecular-weight forms. Although recent studies indicate that adiponectin promotes wound healing in rodents, its role in the wound healing process in humans is unknown. This study investigated the expression levels of adiponectin in adipose tissue and serum of women who experienced either normal or delayed wound healing after abdominal plastic surgery. We found that obese women with delayed healing had slightly lower total adiponectin levels in their adipose tissue compared with women with normal healing rates. Among the different isoforms of adiponectin, levels of the trimer forms were significantly reduced in adipose tissue, but not the serum, of obese women with delayed healing compared to women who healed normally. This study provides clinical evidence for a potential role of low-molecular-weight oligomers of adiponectin in the wound healing process as well as implications for an autocrine and/or paracrine mechanism of adiponectin action in adipose tissues.
Collapse
|
12
|
Pedchenko V, Bauer R, Pokidysheva EN, Al-Shaer A, Forde NR, Fidler AL, Hudson BG, Boudko SP. A chloride ring is an ancient evolutionary innovation mediating the assembly of the collagen IV scaffold of basement membranes. J Biol Chem 2019; 294:7968-7981. [PMID: 30923125 PMCID: PMC6527180 DOI: 10.1074/jbc.ra119.007426] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/13/2019] [Indexed: 12/22/2022] Open
Abstract
Collagen IV scaffold is a principal component of the basement membrane (BM), a specialized extracellular matrix that is essential for animal multicellularity and tissue evolution. Scaffold assembly begins with the trimerization of α-chains into protomers inside the cell, which then are secreted and undergo oligomerization outside the cell. For the ubiquitous scaffold composed of α1- and α2-chains, both intracellular and extracellular stages are mediated by the noncollagenous domain (NC1). The association of protomers is chloride-dependent, whereby chloride ions induce interactions of the protomers' trimeric NC1 domains leading to NC1 hexamer formation. Here, we investigated the mechanisms, kinetics, and functionality of the chloride ion-mediated protomer assembly by using a single-chain technology to produce a stable NC1 trimer comprising α1, α2, and α1 NC1 monomers. We observed that in the presence of chloride, the single-chain NC1-trimer self-assembles into a hexamer, for which the crystal structure was determined. We discovered that a chloride ring, comprising 12 ions, induces the assembly of and stabilizes the NC1 hexamer. Furthermore, we found that the chloride ring is evolutionarily conserved across all animals, first appearing in cnidarians. These findings reveal a fundamental role for the chloride ring in the assembly of collagen IV scaffolds of BMs, a critical event enabling tissue evolution and development. Moreover, the single-chain technology is foundational for generating trimeric NC1 domains of other α-chain compositions to investigate the α121, α345, and α565 collagen IV scaffolds and to develop therapies for managing Alport syndrome, Goodpasture's disease, and cancerous tumor growth.
Collapse
Affiliation(s)
- Vadim Pedchenko
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Vanderbilt Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Ryan Bauer
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Vanderbilt Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Elena N Pokidysheva
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Vanderbilt Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Alaa Al-Shaer
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Nancy R Forde
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada; Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
| | - Aaron L Fidler
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Vanderbilt Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Department of AspirnautTM Program, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Billy G Hudson
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Vanderbilt Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Department of AspirnautTM Program, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Department of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232; Department of Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, Tennessee 37232; Department of Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37232
| | - Sergei P Boudko
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee 37232; Vanderbilt Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232.
| |
Collapse
|
13
|
Okada-Iwabu M, Iwabu M, Yamauchi T, Kadowaki T. Structure and function analysis of adiponectin receptors toward development of novel antidiabetic agents promoting healthy longevity. Endocr J 2018; 65:971-977. [PMID: 30282888 DOI: 10.1507/endocrj.ej18-0310] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Plasma adiponectin levels and expression of its receptors, AdipoRs are decreased in obesity, which cause insulin resistance and diabetes. AdipoR-deficient mice exhibit insulin resistance and impaired glucose tolerance. Moreover, newly identified AdipoR agonists not only improve insulin resistance but prolong lifespan shortened by obesity via AdipoR. Furthermore, efforts to promote structure-based drug discovery research at our laboratory have led to the first ever successful crystallization of AdipoR as well as to clarification of their structures. Structural analysis of AdipoRs as key molecules in lifestyle-related diseases is thus expected to lead not only to the acceleration of structure-based drug discovery but to the elucidation of novel aspects of the AdipoR structures and functions in the years to come. Finally, with the development of novel AdipoR-targeted antidiabetic agents also capable of prolonging lifespan, the attainment of healthy longevity may finally be brought within reach.
Collapse
Affiliation(s)
- Miki Okada-Iwabu
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Laboratory for Advanced Research on Pathophysiology of Metabolic Diseases, The University of Tokyo, Tokyo, Japan
| | - Masato Iwabu
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Integrated Molecular Science on Metabolic Diseases, 22nd Century Medical and Research Center, The University of Tokyo, Tokyo, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- AMED-CREST, Japan Agency for Medical Research and Development, Tokyo, Japan
| | - Takashi Kadowaki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Prevention of Diabetes and Life-style Related Diseases, The University of Tokyo, Tokyo, Japan
- Department of Metabolism and Nutrition, Teikyo University Mizonokuchi Hospital, Kawasaki, Kanagawa, Japan
| |
Collapse
|
14
|
Pal China S, Sanyal S, Chattopadhyay N. Adiponectin signaling and its role in bone metabolism. Cytokine 2018; 112:116-131. [PMID: 29937410 DOI: 10.1016/j.cyto.2018.06.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/06/2018] [Accepted: 06/09/2018] [Indexed: 12/14/2022]
Abstract
Adiponectin, the most prevalent adipo-cytokine in plasma plays critical metabolic and anti-inflammatory roles is fast emerging as an important molecular target for the treatment of metabolic disorders. Adiponectin action is critical in multiple organs including cardio-vascular system, muscle, liver, adipose tissue, brain and bone. Adiponectin signaling in bone has been a topic of active investigation lately. Human association studies and multiple mice models of gene deletion/modification failed to define a clear cause and effect of adiponectin signaling in bone. The most plausible reason could be the multimeric forms of adiponectin that display differential binding to receptors (adipoR1 and adipoR2) with cell-specific receptor variants in bone. Discovery of small molecule agonist of adipoR1 suggested a salutary role of this receptor in bone metabolism. The downstream signaling of adipoR1 in osteoblasts involves stimulation of oxidative phosphorylation leading to increased differentiation via the likely suppression of wnt inhibitor, sclerostin. On the other hand, the inflammation modulatory effect of adiponectin signaling suppresses the RANKL (receptor activator of nuclear factor κ-B ligand) - to - OPG (osteprotegerin) ratio in osteoblasts leading to the suppression of osteoclastogenic response. This review will discuss the adiponectin signaling and its role in skeletal homeostasis and critically assess whether adipoR1 could be a therapeutic target for the treatment of metabolic bone diseases.
Collapse
Affiliation(s)
- Shyamsundar Pal China
- Division of Endocrinology and CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India
| | - Sabyasachi Sanyal
- Division of Biochemistry, CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India
| | - Naibedya Chattopadhyay
- Division of Endocrinology and CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India.
| |
Collapse
|
15
|
Kim S, Lee Y, Kim JW, Son YJ, Ma MJ, Um JH, Kim ND, Min SH, Kim DI, Kim BB. Discovery of a novel potent peptide agonist to adiponectin receptor 1. PLoS One 2018; 13:e0199256. [PMID: 29912982 PMCID: PMC6005460 DOI: 10.1371/journal.pone.0199256] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 06/04/2018] [Indexed: 01/13/2023] Open
Abstract
Activation of adiponectin receptors (AdipoRs) by its natural ligand, adiponectin has been known to be involved in modulating critical metabolic processes such as glucose metabolism and fatty acid oxidation as demonstrated by a number of in vitro and in vivo studies over last two decades. These findings suggest that AdipoRs' agonists could be developed into a potential therapeutic agent for metabolic diseases, such as diabetes mellitus, especially for type II diabetes, a long-term metabolic disorder characterized by high blood sugar, insulin resistance, and relative lack of insulin. Because of limitations in production of biologically active adiponectin, adiponectin-mimetic AdipoRs' agonists have been suggested as alternative ways to expand the opportunity to develop anti-diabetic agents. Based on crystal structure of AdipoR1, we designed AdipoR1's peptide agonists using protein-peptide docking simulation and screened their receptor binding abilities and biological functions via surface plasmon resonance (SPR) and biological analysis. Three candidate peptides, BHD1028, BHD43, and BHD44 were selected and confirmed to activate AdipoR1-mediated signal pathways. In order to enhance the stability and solubility of peptide agonists, candidate peptides were PEGylated. PEGylated BHD1028 exhibited its biological activity at nano-molar concentration and could be a potential therapeutic agent for the treatment of diabetes. Also, SPR and virtual screening techniques utilized in this study may potentially be applied to other peptide-drug screening processes against membrane receptor proteins.
Collapse
Affiliation(s)
- Sunghwan Kim
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, South Korea
- R&D center, Polus Inc., 32 Songdogwahak-ro, Yeonsu-gu, Incheon, South Korea
| | - Younho Lee
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, South Korea
| | - Jun Woo Kim
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, South Korea
| | - Young-Jin Son
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, South Korea
- Department of New Drug Discovery, Samhyun Inc., Daegu, South Korea
| | - Min Jung Ma
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, South Korea
| | - Jee-Hyun Um
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, South Korea
| | - Nam Doo Kim
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, South Korea
| | - Sang Hyun Min
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, South Korea
| | - Dong Il Kim
- Department of Biological Engineering, Inha University, Incheon, South Korea
| | - Brian B. Kim
- R&D center, EncuraGen Inc, Anyang, Gyeonggi-do, South Korea
- * E-mail:
| |
Collapse
|
16
|
Hołubowicz R, Wojtas M, Taube M, Kozak M, Ożyhar A, Dobryszycki P. Effect of calcium ions on structure and stability of the C1q-like domain of otolin-1 from human and zebrafish. FEBS J 2017; 284:4278-4297. [DOI: 10.1111/febs.14308] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 10/17/2017] [Accepted: 10/24/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Rafał Hołubowicz
- Department of Biochemistry; Faculty of Chemistry; Wroclaw University of Science and Technology; Poland
| | - Magdalena Wojtas
- Department of Biochemistry; Faculty of Chemistry; Wroclaw University of Science and Technology; Poland
| | - Michał Taube
- Department of Macromolecular Physics; Faculty of Physics; A. Mickiewicz University; Poznan Poland
| | - Maciej Kozak
- Department of Macromolecular Physics; Faculty of Physics; A. Mickiewicz University; Poznan Poland
| | - Andrzej Ożyhar
- Department of Biochemistry; Faculty of Chemistry; Wroclaw University of Science and Technology; Poland
| | - Piotr Dobryszycki
- Department of Biochemistry; Faculty of Chemistry; Wroclaw University of Science and Technology; Poland
| |
Collapse
|
17
|
A Comprehensive Survey of the Roles of Highly Disordered Proteins in Type 2 Diabetes. Int J Mol Sci 2017; 18:ijms18102010. [PMID: 28934129 PMCID: PMC5666700 DOI: 10.3390/ijms18102010] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/04/2017] [Accepted: 09/12/2017] [Indexed: 01/03/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic and progressive disease that is strongly associated with hyperglycemia (high blood sugar) related to either insulin resistance or insufficient insulin production. Among the various molecular events and players implicated in the manifestation and development of diabetes mellitus, proteins play several important roles. The Kyoto Encyclopedia of Genes and Genomes (KEGG) database has information on 34 human proteins experimentally shown to be related to the T2DM pathogenesis. It is known that many proteins associated with different human maladies are intrinsically disordered as a whole, or contain intrinsically disordered regions. The presented study shows that T2DM is not an exception to this rule, and many proteins known to be associated with pathogenesis of this malady are intrinsically disordered. The multiparametric bioinformatics analysis utilizing several computational tools for the intrinsic disorder characterization revealed that IRS1, IRS2, IRS4, MAFA, PDX1, ADIPO, PIK3R2, PIK3R5, SoCS1, and SoCS3 are expected to be highly disordered, whereas VDCC, SoCS2, SoCS4, JNK9, PRKCZ, PRKCE, insulin, GCK, JNK8, JNK10, PYK, INSR, TNF-α, MAPK3, and Kir6.2 are classified as moderately disordered proteins, and GLUT2, GLUT4, mTOR, SUR1, MAPK1, IKKA, PRKCD, PIK3CB, and PIK3CA are predicted as mostly ordered. More focused computational analyses and intensive literature mining were conducted for a set of highly disordered proteins related to T2DM. The resulting work represents a comprehensive survey describing the major biological functions of these proteins and functional roles of their intrinsically disordered regions, which are frequently engaged in protein–protein interactions, and contain sites of various posttranslational modifications (PTMs). It is also shown that intrinsic disorder-associated PTMs may play important roles in controlling the functions of these proteins. Consideration of the T2DM proteins from the perspective of intrinsic disorder provides useful information that can potentially lead to future experimental studies that may uncover latent and novel pathways associated with the disease.
Collapse
|
18
|
Hossain MM, Murali MR, Kamarul T. Genetically modified mesenchymal stem/stromal cells transfected with adiponectin gene can stably secrete adiponectin. Life Sci 2017; 182:50-56. [PMID: 28606849 DOI: 10.1016/j.lfs.2017.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/05/2017] [Accepted: 06/09/2017] [Indexed: 12/13/2022]
Abstract
AIMS Mesenchymal stem/stromal cells (MSCs) hold promises for the treatment of diverse diseases and regeneration of injured tissues. Genetic modification of MSCs through gene delivery might enhance their therapeutic potential. Adiponectin has been appeared as a potential biomarker for predicting various diseases. Plasma adiponectin levels are negatively correlated with various metabolic and vascular diseases and supplementation of exogenous adiponectin ameliorates the diseases. This study aims to develop adiponectin secreting genetically modified MSCs (GM-MSCs) as a potent strategic tool to complement endogenous adiponectin for the treatment of adiponectin deficiency diseases. MAIN METHODS Human bone marrow derived MSCs were isolated, expanded in vitro and transfected with adiponectin gene containing plasmid vector. Total RNA was extracted and cDNA was prepared by reverse transcription polymerase chain reaction (RT-PCR). The expression of adiponectin gene and protein in GM-MSCs was analyzed by PCR and Western blotting respectively. The secretion of adiponectin protein from GM-MSCs was analyzed by enzyme-linked immunosorbent assay. KEY FINDINGS The expression of adiponectin gene and plasmid DNA was detected in GM-MSCs but not in control group of MSCs. Adiponectin gene expression was detected in GM-MSCs at 2, 7, 14, 21 and 28days after transfection. Western blotting analysis revealed the expression of adiponectin protein only in GM-MSCs. The GM-MSCs stably secreted adiponectin protein into culture media at least for 4weeks. SIGNIFICANCE GM-MSCs express and secret adiponectin protein. Therefore, these adiponectin secreting GM-MSCs could be instrumental for the supplementation of adiponectin in the treatment of adiponectin deficiency related diseases.
Collapse
Affiliation(s)
- Md Murad Hossain
- Tissue Engineering Group (TEG), National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Malliga Raman Murali
- Tissue Engineering Group (TEG), National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Tunku Kamarul
- Tissue Engineering Group (TEG), National Orthopaedic Centre of Excellence in Research and Learning (NOCERAL), Department of Orthopaedic Surgery, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia; Director, University Malay Medical Center, 50603 Kuala Lumpur, Malaysia.
| |
Collapse
|
19
|
Klonisch T, Glogowska A, Thanasupawat T, Burg M, Krcek J, Pitz M, Jaggupilli A, Chelikani P, Wong GW, Hombach-Klonisch S. Structural commonality of C1q TNF-related proteins and their potential to activate relaxin/insulin-like family peptide receptor 1 signalling pathways in cancer cells. Br J Pharmacol 2016; 174:1025-1033. [PMID: 27443788 DOI: 10.1111/bph.13559] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 06/30/2016] [Accepted: 07/04/2016] [Indexed: 12/28/2022] Open
Abstract
We established the role of the GPCR relaxin/insulin-like family peptide receptor 1 (RXFP1 receptor) as a novel active receptor in human glioblastoma (GB), a fatal brain tumour. We identified C1q/TNF-related protein 8 (CTRP8) as a novel agonist of the RXFP1 receptor. CTRP8 enhanced the motility and matrix invasion of GB, and this involved PKC-mediated up-regulation of cathepsin B, a marker for poor prognosis in GB patients. We conclude that the absence of relaxin isoforms does not preclude the activation of the RXFP1 receptor, as the least known member of the CTRP family, CTRP8, can effectively target and activate RXFP1 receptors. LINKED ARTICLES This article is part of a themed section on Recent Progress in the Understanding of Relaxin Family Peptides and their Receptors. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.10/issuetoc.
Collapse
Affiliation(s)
- Thomas Klonisch
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada.,Department of Surgery, University of Manitoba, Winnipeg, MB, Canada.,Department of Medical Microbiology & Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Aleksandra Glogowska
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada
| | | | - Maxwell Burg
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada
| | - Jerry Krcek
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada.,Department of Surgery, University of Manitoba, Winnipeg, MB, Canada
| | - Marshall Pitz
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada
| | | | - Prashen Chelikani
- Department of Oral Biology, University of Manitoba, Winnipeg, MB, Canada
| | - G William Wong
- Department of Physiology and Center for Metabolism and Obesity Research, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Sabine Hombach-Klonisch
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada.,Department of Obstetrics, Gynecology & Reproductive Medicine, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| |
Collapse
|
20
|
Elegheert J, Kakegawa W, Clay JE, Shanks NF, Behiels E, Matsuda K, Kohda K, Miura E, Rossmann M, Mitakidis N, Motohashi J, Chang VT, Siebold C, Greger IH, Nakagawa T, Yuzaki M, Aricescu AR. Structural basis for integration of GluD receptors within synaptic organizer complexes. Science 2016; 353:295-9. [PMID: 27418511 PMCID: PMC5291321 DOI: 10.1126/science.aae0104] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 06/17/2016] [Indexed: 12/25/2022]
Abstract
Ionotropic glutamate receptor (iGluR) family members are integrated into supramolecular complexes that modulate their location and function at excitatory synapses. However, a lack of structural information beyond isolated receptors or fragments thereof currently limits the mechanistic understanding of physiological iGluR signaling. Here, we report structural and functional analyses of the prototypical molecular bridge linking postsynaptic iGluR δ2 (GluD2) and presynaptic β-neurexin 1 (β-NRX1) via Cbln1, a C1q-like synaptic organizer. We show how Cbln1 hexamers "anchor" GluD2 amino-terminal domain dimers to monomeric β-NRX1. This arrangement promotes synaptogenesis and is essential for D: -serine-dependent GluD2 signaling in vivo, which underlies long-term depression of cerebellar parallel fiber-Purkinje cell (PF-PC) synapses and motor coordination in developing mice. These results lead to a model where protein and small-molecule ligands synergistically control synaptic iGluR function.
Collapse
Affiliation(s)
- Jonathan Elegheert
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Wataru Kakegawa
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Jordan E Clay
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Natalie F Shanks
- Department of Molecular Physiology and Biophysics, School of Medicine, Vanderbilt University, Nashville, TN 37232-0615, USA
| | - Ester Behiels
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Keiko Matsuda
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Kazuhisa Kohda
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Eriko Miura
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Maxim Rossmann
- Neurobiology Division, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Nikolaos Mitakidis
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Junko Motohashi
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Veronica T Chang
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Christian Siebold
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Ingo H Greger
- Neurobiology Division, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Terunaga Nakagawa
- Department of Molecular Physiology and Biophysics, School of Medicine, Vanderbilt University, Nashville, TN 37232-0615, USA
| | - Michisuke Yuzaki
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | - A Radu Aricescu
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK.
| |
Collapse
|
21
|
Abstract
Hepcidin is the master regulator of systemic iron homeostasis, facilitating iron balance by controlling intestinal iron absorption and recycling. Hepcidin levels are suppressed when erythropoiesis is stimulated, for example following acute blood loss, appropriately enhancing cellular iron export to the plasma to support production of new red blood cells. However, persistent increased and ineffective erythropoiesis, for example in thalassemia, results in sustained elevations in iron absorption, which cause iron overload with associated organ toxicities. The ligands, receptors, and canonical pathways by which iron loading and inflammation upregulate hepcidin expression have been largely established. However, although several mechanisms have been proposed, the means by which erythropoiesis causes hepcidin suppression have been unclear. The erythroid-derived hormone erythroferrone appears to be a convincing candidate for the link between increased erythropoiesis and hepcidin suppression. If confirmed to be clinically and physiologically relevant in humans, potentiation or inhibition of erythroferrone activity could be a crucial pharmaceutical strategy.
Collapse
Affiliation(s)
- Sant-Rayn Pasricha
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute for Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom;
| | - Kirsty McHugh
- Jenner Institute, University of Oxford, Oxford OX3 7DQ, United Kingdom
| | - Hal Drakesmith
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute for Molecular Medicine, University of Oxford, Oxford OX3 9DS, United Kingdom;
| |
Collapse
|
22
|
Moreau C, Bally I, Chouquet A, Bottazzi B, Ghebrehiwet B, Gaboriaud C, Thielens N. Structural and Functional Characterization of a Single-Chain Form of the Recognition Domain of Complement Protein C1q. Front Immunol 2016; 7:79. [PMID: 26973654 PMCID: PMC4774423 DOI: 10.3389/fimmu.2016.00079] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 02/18/2016] [Indexed: 11/17/2022] Open
Abstract
Complement C1q is a soluble pattern recognition molecule comprising six heterotrimeric subunits assembled from three polypeptide chains (A–C). Each heterotrimer forms a collagen-like stem prolonged by a globular recognition domain. These recognition domains sense a wide variety of ligands, including pathogens and altered-self components. Ligand recognition is either direct or mediated by immunoglobulins or pentraxins. Multivalent binding of C1q to its targets triggers immune effector mechanisms mediated via its collagen-like stems. The induced immune response includes activation of the classical complement pathway and enhancement of the phagocytosis of the recognized target. We report here, the first production of a single-chain recombinant form of human C1q globular region (C1q-scGR). The three monomers have been linked in tandem to generate a single continuous polypeptide, based on a strategy previously used for adiponectin, a protein structurally related to C1q. The resulting C1q-scGR protein was produced at high yield in stably transfected 293-F mammalian cells. Recombinant C1q-scGR was correctly folded, as demonstrated by its X-ray crystal structure solved at a resolution of 1.35 Å. Its interaction properties were assessed by surface plasmon resonance analysis using the following physiological C1q ligands: the receptor for C1q globular heads, the long pentraxin PTX3, calreticulin, and heparin. The 3D structure and the binding properties of C1q-scGR were similar to those of the three-chain fragment generated by collagenase digestion of serum-derived C1q. Comparison of the interaction properties of the fragments with those of native C1q provided insights into the avidity component associated with the hexameric assembly of C1q. The interest of this functional recombinant form of the recognition domains of C1q in basic research and its potential biomedical applications are discussed.
Collapse
Affiliation(s)
- Christophe Moreau
- IBS, University of Grenoble Alpes, Grenoble, France; CNRS, IBS, Grenoble, France; IBS, CEA, Grenoble, France
| | - Isabelle Bally
- IBS, University of Grenoble Alpes, Grenoble, France; CNRS, IBS, Grenoble, France; IBS, CEA, Grenoble, France
| | - Anne Chouquet
- IBS, University of Grenoble Alpes, Grenoble, France; CNRS, IBS, Grenoble, France; IBS, CEA, Grenoble, France
| | - Barbara Bottazzi
- Immunopharmacology Laboratory, Humanitas Research Hospital , Rozzano , Italy
| | | | - Christine Gaboriaud
- IBS, University of Grenoble Alpes, Grenoble, France; CNRS, IBS, Grenoble, France; IBS, CEA, Grenoble, France
| | - Nicole Thielens
- IBS, University of Grenoble Alpes, Grenoble, France; CNRS, IBS, Grenoble, France; IBS, CEA, Grenoble, France
| |
Collapse
|
23
|
Wang L, Wang L, Zhang D, Jiang Q, Sun R, Wang H, Zhang H, Song L. A novel multi-domain C1qDC protein from Zhikong scallop Chlamys farreri provides new insights into the function of invertebrate C1qDC proteins. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2015; 52:202-214. [PMID: 26049063 DOI: 10.1016/j.dci.2015.05.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 05/20/2015] [Accepted: 05/20/2015] [Indexed: 06/04/2023]
Abstract
The C1q domain containing (C1qDC) proteins are a family of proteins possessing globular C1q (gC1q) domains, and they rely on this domain to recognize various ligands such as PAMPs, immunoglobulins, ligands on apoptotic cell. In the present study, a novel multi-domain C1qDC protein (CfC1qDC-2) was identified from scallop Chlamys farreri, and its full length cDNA was composed of 1648 bp, encoding a signal peptide and three typical gC1q domains. BLAST analysis revealed significant sequence similarity between CfC1qDC-2 and C1qDC proteins from mollusks. Three gC1q domains were predicted in its tertiary structure to form a tightly packed bell-shaped trimer, and each one adopted a typical 10-stranded sandwich fold with a jelly-roll topology and contained six aromatic amino acids forming the hydrophobic core. The mRNA transcripts of CfC1qDC-2 were mainly detected in the tissues of hepatopancreas and gonad of adult scallops, and the expression level was up-regulated in hemocytes after stimulated by LPS, PGN and β-glucan. During the embryonic development of scallop, the mRNA transcripts of CfC1qDC-2 were presented in all the detected stages, and the expression level was up-regulated from D-hinged larvae and reached the highest at eye-spot larvae. The recombinant protein of MBP-CfC1qDC-2 (rCfC1qDC-2) could bind various PAMPs including LPS, PGN, LTA, β-glucan, mannan as well as polyI:C, and different microorganisms including three Gram-negative bacteria, three Gram-positive bacteria and two yeasts, as well as scallop apoptotic cells. Meanwhile, rCfC1qDC-2 could interact with human heat-aggregated IgG and IgM, and inhibit the C1q-dependent hemolysis of rabbit serum. All these results indicated that CfC1qDC-2 could recognize not only PAMPs as a PRR, but also the apoptotic cells. Moreover, the similar structures and functions shared by CfC1qDC-2 and complement C1q provided a new insight into the evolution of C1qDC proteins in complement system.
Collapse
Affiliation(s)
- Leilei Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China; Lianyungang Maternal and child Health Hospital, Lianyungang 222001, China
| | - Lingling Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Daoxiang Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiufen Jiang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Sun
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Huan Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | | |
Collapse
|
24
|
Ghoshal K, Bhattacharyya M. Adiponectin: Probe of the molecular paradigm associating diabetes and obesity. World J Diabetes 2015; 6:151-166. [PMID: 25685286 PMCID: PMC4317307 DOI: 10.4239/wjd.v6.i1.151] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/09/2014] [Accepted: 12/17/2014] [Indexed: 02/05/2023] Open
Abstract
Type 2 diabetes is an emerging health challenge all over the world as a result of urbanization, high prevalence of obesity, sedentary lifestyle and other stress related factors compounded with the genetic prevalence. The health consequences and economic burden of the obesity and related diabetes mellitus epidemic are enormous. Different signaling molecules secreted by adipocytes have been implicated in the development of obesity and associated insulin resistance in type 2 diabetes. Human adiponectin, a 244-amino acid collagen-like protein is solely secreted by adipocytes and acts as a hormone with anti-inflammatory and insulin-sensitizing properties. Adiponectin secretion, in contrast to secretion of other adipokines, is paradoxically decreased in obesity which may be attributable to inhibition of adiponectin gene transcription. There are several mechanisms through which adiponectin may decrease the risk of type 2 diabetes, including suppression of hepatic gluconeogenesis, stimulation of fatty acid oxidation in the liver, stimulation of fatty acid oxidation and glucose uptake in skeletal muscle, and stimulation of insulin secretion. To date, no systematic review has been conducted that evaluate the potential importance of adiponectin metabolism in insulin resistance. In this review attempt has been made to explore the relevance of adiponectin metabolism for the development of diabetes mellitus. This article also identifies this novel target for prospective therapeutic research aiming successful management of diabetes mellitus.
Collapse
|
25
|
Thanasupawat T, Glogowska A, Burg M, Wong GW, Hoang-Vu C, Hombach-Klonisch S, Klonisch T. RXFP1 is Targeted by Complement C1q Tumor Necrosis Factor-Related Factor 8 in Brain Cancer. Front Endocrinol (Lausanne) 2015; 6:127. [PMID: 26322020 PMCID: PMC4534857 DOI: 10.3389/fendo.2015.00127] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 07/28/2015] [Indexed: 01/08/2023] Open
Abstract
The relaxin-like RXFP1 ligand-receptor system has important functions in tumor growth and tissue invasion. Recently, we have identified the secreted protein, CTRP8, a member of the C1q/tumor necrosis factor-related protein (CTRP) family, as a novel ligand of the relaxin receptor, RXFP1, with functions in brain cancer. Here, we review the role of CTRP members in cancers cells with particular emphasis on CTRP8 in glioblastoma.
Collapse
Affiliation(s)
- Thatchawan Thanasupawat
- Department of Human Anatomy and Cell Science, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Aleksandra Glogowska
- Department of Human Anatomy and Cell Science, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Maxwell Burg
- Department of Human Anatomy and Cell Science, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - G. William Wong
- Department of Physiology, Center for Metabolism and Obesity Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Cuong Hoang-Vu
- Clinics of General, Visceral and Vascular Surgery, Martin Luther University, Halle/Salle, Germany
| | - Sabine Hombach-Klonisch
- Department of Human Anatomy and Cell Science, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Obstetrics, Gynecology and Reproductive Medicine, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Thomas Klonisch
- Department of Human Anatomy and Cell Science, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Surgery, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Department of Medical Microbiology and Infectious Diseases, Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- *Correspondence: Thomas Klonisch, Faculty of Health Sciences, College of Medicine, University of Manitoba, 130–745 Bannatyne Avenue, Winnipeg, MB R3E 0J9, Canada,
| |
Collapse
|
26
|
Abstract
Adiponectin is among the most studied adipokines, the collection of molecules secreted from adipose tissue. It is also one of the most architecturally complex adipokines with its various oligomeric states that include trimers, hexamers, nonamers (9mers), dodecamers (12mers), and octadecamers (18mers). The importance of adiponectin in metabolic regulation is underscored by its strong positive associations with improvement in insulin action and also decreased risks for developing type 2 diabetes. Understanding the mechanisms involved in maintaining the steady-state concentrations of adiponectin oligomers in circulation is therefore likely to provide important insight into the development of insulin resistance. This review will discuss the current state of knowledge regarding the biochemical composition of adiponectin oligomers, the commonly used techniques to analyze them, and the known post-translational modifications that affect their assembly. Evidence based on in vitro oligomer assembly reactions in support of a "cystine ratchet" model of adiponectin oligomer formation will be considered along with limitations of the evidence. Secretory pathway proteins that have been shown to affect the distribution of adiponectin oligomers will also be discussed along with hypotheses regarding their potential involvement in the cystine ratchet model of adiponectin oligomerization.
Collapse
Affiliation(s)
- Tsu-Shuen Tsao
- Department of Chemistry and Biochemistry, University of Arizona, MRB Diabetes Research, P.O. Box 245218, Tucson, AZ, 85724, USA,
| |
Collapse
|
27
|
Myers-Turnbull D, Bliven SE, Rose PW, Aziz ZK, Youkharibache P, Bourne PE, Prlić A. Systematic detection of internal symmetry in proteins using CE-Symm. J Mol Biol 2014; 426:2255-68. [PMID: 24681267 DOI: 10.1016/j.jmb.2014.03.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 11/26/2022]
Abstract
Symmetry is an important feature of protein tertiary and quaternary structures that has been associated with protein folding, function, evolution, and stability. Its emergence and ensuing prevalence has been attributed to gene duplications, fusion events, and subsequent evolutionary drift in sequence. This process maintains structural similarity and is further supported by this study. To further investigate the question of how internal symmetry evolved, how symmetry and function are related, and the overall frequency of internal symmetry, we developed an algorithm, CE-Symm, to detect pseudo-symmetry within the tertiary structure of protein chains. Using a large manually curated benchmark of 1007 protein domains, we show that CE-Symm performs significantly better than previous approaches. We use CE-Symm to build a census of symmetry among domain superfamilies in SCOP and note that 18% of all superfamilies are pseudo-symmetric. Our results indicate that more domains are pseudo-symmetric than previously estimated. We establish a number of recurring types of symmetry-function relationships and describe several characteristic cases in detail. With the use of the Enzyme Commission classification, symmetry was found to be enriched in some enzyme classes but depleted in others. CE-Symm thus provides a methodology for a more complete and detailed study of the role of symmetry in tertiary protein structure [availability: CE-Symm can be run from the Web at http://source.rcsb.org/jfatcatserver/symmetry.jsp. Source code and software binaries are also available under the GNU Lesser General Public License (version 2.1) at https://github.com/rcsb/symmetry. An interactive census of domains identified as symmetric by CE-Symm is available from http://source.rcsb.org/jfatcatserver/scopResults.jsp].
Collapse
Affiliation(s)
- Douglas Myers-Turnbull
- Department of Computer Science and Engineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Spencer E Bliven
- Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Peter W Rose
- San Diego Supercomputer Center, University of California San Diego, La Jolla, CA 92093, USA
| | - Zaid K Aziz
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
| | | | - Philip E Bourne
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA 92093, USA.
| | - Andreas Prlić
- San Diego Supercomputer Center, University of California San Diego, La Jolla, CA 92093, USA.
| |
Collapse
|
28
|
Aouida M, Kim K, Shaikh AR, Pardo JM, Eppinger J, Yun DJ, Bressan RA, Narasimhan ML. A Saccharomyces cerevisiae assay system to investigate ligand/AdipoR1 interactions that lead to cellular signaling. PLoS One 2013; 8:e65454. [PMID: 23762377 PMCID: PMC3676391 DOI: 10.1371/journal.pone.0065454] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 04/21/2013] [Indexed: 12/12/2022] Open
Abstract
Adiponectin is a mammalian hormone that exerts anti-diabetic, anti-cancer and cardioprotective effects through interaction with its major ubiquitously expressed plasma membrane localized receptors, AdipoR1 and AdipoR2. Here, we report a Saccharomyces cerevisiae based method for investigating agonist-AdipoR interactions that is amenable for high-throughput scale-up and can be used to study both AdipoRs separately. Agonist-AdipoR1 interactions are detected using a split firefly luciferase assay based on reconstitution of firefly luciferase (Luc) activity due to juxtaposition of its N- and C-terminal fragments, NLuc and CLuc, by ligand induced interaction of the chimeric proteins CLuc-AdipoR1 and APPL1-NLuc (adaptor protein containing pleckstrin homology domain, phosphotyrosine binding domain and leucine zipper motif 1-NLuc) in a S. cerevisiae strain lacking the yeast homolog of AdipoRs (Izh2p). The assay monitors the earliest known step in the adiponectin-AdipoR anti-diabetic signaling cascade. We demonstrate that reconstituted Luc activity can be detected in colonies or cells using a CCD camera and quantified in cell suspensions using a microplate reader. AdipoR1-APPL1 interaction occurs in absence of ligand but can be stimulated specifically by agonists such as adiponectin and the tobacco protein osmotin that was shown to have AdipoR-dependent adiponectin-like biological activity in mammalian cells. To further validate this assay, we have modeled the three dimensional structures of receptor-ligand complexes of membrane-embedded AdipoR1 with cyclic peptides derived from osmotin or osmotin-like plant proteins. We demonstrate that the calculated AdipoR1-peptide binding energies correlate with the peptides’ ability to behave as AdipoR1 agonists in the split luciferase assay. Further, we demonstrate agonist-AdipoR dependent activation of protein kinase A (PKA) signaling and AMP activated protein kinase (AMPK) phosphorylation in S. cerevisiae, which are homologous to important mammalian adiponectin-AdipoR1 signaling pathways. This system should facilitate the development of therapeutic inventions targeting adiponectin and/or AdipoR physiology.
Collapse
Affiliation(s)
- Mustapha Aouida
- Plant Stress Genomics Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
| | - Kangchang Kim
- Division of Applied Life Science (Brain Korea 21 Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
| | - Abdul Rajjak Shaikh
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
| | - Jose M. Pardo
- Instituto de Recursos Naturales y Agrobiologia, Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Jörg Eppinger
- KAUST Catalysis Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
| | - Dae-Jin Yun
- Division of Applied Life Science (Brain Korea 21 Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Republic of Korea
| | - Ray A. Bressan
- Plant Stress Genomics Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana, United States of America
| | - Meena L. Narasimhan
- Plant Stress Genomics Research Center, King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
- * E-mail:
| |
Collapse
|
29
|
Yu D, Zhang C, Wang H, Qin P. Characterization of the weak calcium binding of trimeric globular adiponectin. Cell Biochem Funct 2012; 31:338-43. [PMID: 23023478 DOI: 10.1002/cbf.2906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Revised: 08/06/2012] [Accepted: 09/07/2012] [Indexed: 01/20/2023]
Abstract
Adiponectin is secreted from adipose tissue and functions as a protein hormone in regulating glucose metabolism and fatty acid catabolism. Adiponectin plays an important role as a novel risk factor and potential diagnostic and prognostic biomarker in cancer. Crystal structures of globular adiponectin have been resolved with three calcium-binding sites on the top of its central tunnel. However, the calcium-binding property of adiponectin remains elusive. Mouse globular adiponectin was cloned into pET11a and expressed in Escherichia coli. The folding of adiponectin was indicated by the spread of resonances in HSQC spectrum. Luminescence resonance energy transfer was used to obtain the binding constant (K(d)) of Tb(3+) and the inhibitor constant (K(i)) of Ca(2+) for globular adiponectin. The obtained calcium-binding affinity to adiponectin is relatively low (~2 mM), which indicates that the high concentration of adiponectin in circulating system may function as calcium storage bank and buffer the free calcium concentration.
Collapse
Affiliation(s)
- Dongmei Yu
- Department of Biological Engineering, University of Missouri, Columbia, MO 65211, USA
| | | | | | | |
Collapse
|
30
|
Tu X, Palczewski K. Crystal structure of the globular domain of C1QTNF5: Implications for late-onset retinal macular degeneration. J Struct Biol 2012; 180:439-46. [PMID: 22892318 DOI: 10.1016/j.jsb.2012.07.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 07/28/2012] [Accepted: 07/30/2012] [Indexed: 01/09/2023]
Abstract
Autosomal dominant late-onset retinal macular degeneration (L-ORMD) is caused by a single S163R mutation in the C1q and tumor necrosis factor-related protein 5 (C1QTNF5) gene. The C1QTNF5 gene encodes a secreted and membrane-associated protein involved in adhesion of retinal pigmented epithelial cells (RPE) to Bruch's membrane. The crystal structure of the trimeric globular domain of human C1QTNF5 at 1.34Å resolution reveals unique features of this novel C1q family member. It lacks a Ca²⁺-binding site, displays a remarkable non-uniform distribution of surface electrostatic potentials and possesses a unique sequence (F₁₈₁F₁₈₂G₁₈₃G₁₈₄W₁₈₅P₁₈₆) that forms a hydrophobic plateau surrounded by Lys and Arg residues with a solvent cavity underneath. S₁₆₃ forms a hydrogen bond with F₁₈₂ in a hydrophobic area extending to the hydrophobic plateau. The pathogenic mutation S163R disrupts this hydrogen bonding and positively charges these hydrophobic areas. Thus, our analysis provides insights into the structural basis of the L-ORMD disease mechanism.
Collapse
Affiliation(s)
- Xiongying Tu
- Department of Pharmacology, School of Medicine, Case Western Reserve University, OH, USA
| | | |
Collapse
|