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Bakhtyukov AA, Derkach KV, Dar’in DV, Shpakov AO. Thienopyrimidine Derivatives Specifically Activate Testicular Steroidogenesis but Do Not Affect Thyroid Functions. J EVOL BIOCHEM PHYS+ 2019. [DOI: 10.1134/s0022093019010046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shpakov AO. [Pharmacological approaches for correction of thyroid dysfunctions in diabetes mellitus]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2017; 63:219-231. [PMID: 28781255 DOI: 10.18097/pbmc20176303219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Thyroid diseases are closely associated with the development of types 1 and 2 diabetes mellitus (DM), and as a consequence, the development of effective approaches for their treatment is one of the urgent problems of endocrinology. Traditionally, thyroid hormones (TH) are used to correct functions of the thyroid system. However, they are characterized by many side effects, such as their negative effect on the cardiovascular system as well as the ability of TH to enhance insulin resistance and to disturb insulin-producing function of pancreas, exacerbating thereby diabetic pathology. Therefore, the analogues of TH, selective for certain types of TH receptors, that do not have these side effects, are being developed. The peptide and low-molecular weight regulators of thyroid-stimulating hormone receptor, which regulate the activity of the thyroid axis at the stage of TH synthesis and secretion in thyrocytes, are being created. Systemic and intranasal administration of insulin, metformin therapy and drugs with antioxidant activity are effective for the treatment of thyroid pathology in types 1 and 2 DM. In the review, the literature data and the results of own investigations on pharmacological approaches for the treatment and prevention of thyroid diseases in patients with types 1 and 2 DM are summarized and analyzed.
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Affiliation(s)
- A O Shpakov
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences
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Derkach KV, Ignatieva PA, Bogush IV, Balluzek MF, Shpakov AO. Changes in the hormonal status of cardiovascular and the thyroid systems in rats with 18-month type 2 diabetes mellitus. ADVANCES IN GERONTOLOGY 2016. [DOI: 10.1134/s2079057016040044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sukhov IB, Derkach KV, Chistyakova OV, Bondareva VM, Shpakov AO. The effect of prolonged intranasal administration of serotonin on the activity of hypothalamic signaling systems in male rats with neonatal diabetes. ACTA ACUST UNITED AC 2016. [DOI: 10.1134/s1990519x1604012x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Sukhov IB, Derkach KV, Chistyakova OV, Bondareva VM, Shpakov AO. Functional state of hypothalamic signaling systems in rats with type 2 diabetes mellitus treated with intranasal insulin. J EVOL BIOCHEM PHYS+ 2016. [DOI: 10.1134/s0022093016030030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sukhov IB, Derkach KV, Shpakov AO. Comparative study of functional activity of the D2-dopaminergic system in the hypothalamus of rats with different models of diabetes mellitus. J EVOL BIOCHEM PHYS+ 2016. [DOI: 10.1134/s0022093016030108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Derkach KV, Shpakova EA, Tarasenko II, Shpakov AO. Proinsulin C-peptide and its C-terminal fragments stimulate Gi/o-proteins but do not influence adenylyl cyclase activity. J EVOL BIOCHEM PHYS+ 2015. [DOI: 10.1134/s0022093015050105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Regulation of the Melanocortin-Sensitive Adenylate Cyclase System by N-Acylated Peptide 71-82 of Type 4 Melanocortin Receptor. Bull Exp Biol Med 2015; 160:40-4. [PMID: 26593415 DOI: 10.1007/s10517-015-3093-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Indexed: 10/22/2022]
Abstract
The peptides structurally corresponding in to cytoplasmic loops of G protein-coupled receptors (GPCR) are able to control functional activity of homologous receptors and the corresponding signaling pathways. Modification of these peptides with hydrophobic radicals enhances their biological activity due to penetration of lipophilic derivatives through the membrane and anchoring near their targets, GPCR. We synthesized an N-palmitoylated peptide Palm-Val-[Lys-Asn-Lys-Asn-Leu-His-Ser-Pro-(Nle)-Tyr-Phe-Phe71-82]-amide-Palm-Val-(71-82) structurally corresponding to cytoplasmic loop 1 of melanocortin 4 receptor (M4R). We found that in micromolar concentrations it very effectively suppresses stimulation of basal adenylate cyclase activity and basal level of GppNHp binding of heterotrimeric G proteins produced by THIQ and α-melanocyte stimulating hormone (α-MSH), agonists of M4R homologous to the peptide, in synaptosomal membranes of rat brain. The peptide Palm-Val-(71-82) also reduced, albeit to a significantly less extent, stimulation of adenylate cyclase and G-proteins by M3R agonist of γ-MSH, due to high homology of the peptide primary structure to M3R cytoplasmic loop 1. The synthesized peptide with activity of M4R/M3R antagonist can be used for the development of regulators of M4R and M3R and the corresponding biochemical and physiological processes.
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Derkach KV, Kuznetsova LA, Sharova TS, Ignat’eva PA, Bondareva VM, Shpakov AO. The effect of prolonged metformin treatment on the activity of the adenylyl cyclase system and NO-synthase in the brain and myocardium of obese rats. ACTA ACUST UNITED AC 2015. [DOI: 10.1134/s1990519x1505003x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Derkach KV, Bondareva VM, Moiseyuk IV, Shpakov AO. The effect of 2-month bromocriptine treatment on the activity of the adenylyl cyclase signaling system in the myocardium and testes of rats with type 2 diabetes. ACTA ACUST UNITED AC 2015. [DOI: 10.1134/s1990519x15050041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Derkach KV, Moiseyuk IV, Shpakova EA, Shpakov AO. The thyroid status of rats immunized with peptides derived from the extracellular regions of the types 3 and 4 melanocortin receptors and the 1B-subtype 5-hydroxytryptamine receptor. J EVOL BIOCHEM PHYS+ 2015. [DOI: 10.1134/s0022093015040031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Derkach KV, Shpakova EA, Tarasenko II, Zharova OA, Shpakov AO. The immunization with peptide 189-205, a derivative of serotonin receptor subtypes 1B, changes the sensetivity of adenylyl cyclase to hormones in the rat brain. DOKL BIOCHEM BIOPHYS 2015; 463:225-8. [PMID: 26335817 DOI: 10.1134/s1607672915040079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Indexed: 11/23/2022]
Abstract
The aim of this work was to study the effect of multiple (during 12 months) immunization of rats with BSA-conjugated peptide 189-205 corresponding to the second extracellular loop of rat HT1BR on ACSS activity in the brain of immunized animals (group HT1BR) and its regulation by hormones.
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Affiliation(s)
- K V Derkach
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, pr. Morisa Toreza 44, St. Petersburg, 194223, Russia
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Intranasal and Intramuscular Administration of Lysine-Palmitoylated Peptide 612–627 of Thyroid-Stimulating Hormone Receptor Increases the Level of Thyroid Hormones in Rats. Int J Pept Res Ther 2015. [DOI: 10.1007/s10989-014-9452-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Shpakov AO, Derkach KV. [Novel achievements in development and application of GPCR-peptides]. J EVOL BIOCHEM PHYS+ 2015; 51:11-6. [PMID: 25859600 DOI: 10.1134/s0022093015010020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
One of the approaches to creating the regulators of G-protein-coupled receptors (GPCR) is the development of peptides that structurally correspond to the functionally important regions of the intracellular extracellular loops of the receptors. GPCR-peptides can selectively regulate the functional activity of homologous receptor and affect the hormonal signal transduction via the receptor. Among the peptides corresponding to the intracellular regions of GPCR, their derivatives modified with hydrophobic radicals exhibit the highest activity and selectivity of action in vitro and in vivo. Ample evidence demonstrates that lipophilic GPCR-peptides may be used to treat diseases and various abnormalities that depend on the functional activity of receptors homologous to them. In turn, the peptides corresponding to the extracellular regions of GPCR can be used as functional probes for studying the specific interaction between the receptors and their ligands, as well as for studying the etiology and pathogenesis of autoimmune diseases caused by the production of antibodies to GPCR antigenic determinants that are localized in the receptor extracellular loops. The present review focuses on the recent achievements in development and application of GPCR-peptides and on the prospects for their further use in medicine and fundamental biology.
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Shpakov AO, Shpakova EA. [Prospects for use of peptides and their derivatives, structurally corresponding to the G protein-coupled receptors, in medicine]. BIOCHEMISTRY MOSCOW-SUPPLEMENT SERIES B-BIOMEDICAL CHEMISTRY 2015; 61:19-29. [PMID: 25762596 DOI: 10.1134/s1990750814010144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The regulation of signaling pathways involved in the control of many physiological functions is carried out via the heterotrimeric G protein-coupled receptors (GPCR). The search of effective and selective regulators of GPCR and intracellular signaling cascades coupled with them is one of the important problems of modern fundamental and clinical medicine. Recently data suggest that synthetic peptides and their derivatives, structurally corresponding to the intracellular and transmembrane regions of GPCR, can interact with high efficiency and selectivity with homologous receptors and influence, thus, the functional activity of intracellular signaling cascades and fundamental cellular processes controlled by them. GPCR-peptides are active in both in vitro and in vivo. They regulate hematopoiesis, angiogenesis and cell proliferation, inhibit tumor growth and metastasis, and prevent the inflammatory diseases and septic shock. These data show greatest prospects in the development of the new generations of drugs based on GPCR-derived peptides, capable of regulating the important functions of the organism.
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Shpakov AO, Derkach KV, Zharova OA, Shpakova EA. The functional activity of the adenylate cyclase system in the brains of rats with metabolic syndrome induced by immunization with peptide 11–25 of the type 4 melanocortin receptor. NEUROCHEM J+ 2015. [DOI: 10.1134/s1819712415010092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Shpakov AO, Derkach KV, Chistyakova OV, Bondareva VM. The influence of bromocryptine treatment on activity of the adenylyl cyclase system in the brain of rats with type 2 diabetes mellitus induced by high-fat diet. DOKL BIOCHEM BIOPHYS 2015; 459:186-9. [DOI: 10.1134/s1607672914060027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Indexed: 01/22/2023]
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Derkach KV, Bondareva VM, Chistyakova OV, Berstein LM, Shpakov AO. The Effect of Long-Term Intranasal Serotonin Treatment on Metabolic Parameters and Hormonal Signaling in Rats with High-Fat Diet/Low-Dose Streptozotocin-Induced Type 2 Diabetes. Int J Endocrinol 2015; 2015:245459. [PMID: 26124826 PMCID: PMC4466391 DOI: 10.1155/2015/245459] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 04/27/2015] [Accepted: 04/30/2015] [Indexed: 12/13/2022] Open
Abstract
In the last years the treatment of type 2 diabetes mellitus (DM2) was carried out using regulators of the brain signaling systems. In DM2 the level of the brain serotonin is reduced. So far, the effect of the increase of the brain serotonin level on DM2-induced metabolic and hormonal abnormalities has been studied scarcely. The present work was undertaken with the aim of filling this gap. DM2 was induced in male rats by 150-day high-fat diet and the treatment with low dose of streptozotocin (25 mg/kg) on the 70th day of experiment. From the 90th day, diabetic rats received for two months intranasal serotonin (IS) at a daily dose of 20 μg/rat. The IS treatment of diabetic rats decreased the body weight, and improved glucose tolerance, insulin-induced glucose utilization, and lipid metabolism. Besides, it restored hormonal regulation of adenylyl cyclase (AC) activity in the hypothalamus and normalized AC stimulation by β-adrenergic agonists in the myocardium. In nondiabetic rats the same treatment induced metabolic and hormonal alterations, some of which were similar to those in DM2 but expressed to a lesser extent. In conclusion, the elevation of the brain serotonin level may be regarded as an effective approach to treat DM2 and its complications.
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Affiliation(s)
- Kira V. Derkach
- Laboratory of Molecular Endocrinology, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Thorez Avenue 44, Saint Petersburg 194223, Russia
| | - Vera M. Bondareva
- Laboratory of Molecular Endocrinology, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Thorez Avenue 44, Saint Petersburg 194223, Russia
| | - Oxana V. Chistyakova
- Laboratory of Molecular Endocrinology, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Thorez Avenue 44, Saint Petersburg 194223, Russia
| | - Lev M. Berstein
- Laboratory of Oncoendocrinology, N.N. Petrov Research Institute of Oncology, Leningradskaya Street 68, Pesochny, Saint Petersburg 197758, Russia
| | - Alexander O. Shpakov
- Laboratory of Molecular Endocrinology, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Thorez Avenue 44, Saint Petersburg 194223, Russia
- *Alexander O. Shpakov:
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Derkach KV, Shpakova EA, Shpakov AO. Palmitoylated peptide 562-572 of luteinizing hormone receptor increases testosterone level in male rats. Bull Exp Biol Med 2014; 158:209-12. [PMID: 25430649 DOI: 10.1007/s10517-014-2724-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Indexed: 10/24/2022]
Abstract
We studied the effect of intraperitoneal and intratesticular administration of NKDTKIAKKNle-A(562-572) peptide and its palmotoylated analog NKDTKIAKK-Nle-A(562-572)-K(Palm)A to male rats on adenylate cyclase activity in the testicular membranes in vitro and on plasma testosterone levels. Peptide NKDTKIAKK-Nle-A(562-572)-K(Palm)A stimulated basal adenylate cyclase activity and reduced activity of the enzyme in testicular membranes stimulated by chorionic gonadotropin. After intratesticular administration in a dose of 200 μg/kg, it significantly increased testosterone so that 1, 3 and 5 h after administration its level was increased by 74, 44 and 35%, respectively. Administered intraperitoneally in a lower dose (50 μg/kg), the peptide had little effect on testosterone level. Unmodified peptide was inactive.
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Affiliation(s)
- K V Derkach
- Laboratory for Molecular Endocrinology, I. M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
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Moiseyuk IV, Derkach KV, Shpakov AO. Functional activity of thyroid gland in male rats with acute and mild streptozotocin diabetes. J EVOL BIOCHEM PHYS+ 2014. [DOI: 10.1134/s0022093014040048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Shpakov AO, Dar'in DV, Derkach KV, Lobanov PS. The stimulating influence of thienopyrimidine compounds on the adenylyl cyclase signaling systems in the rat testes. DOKL BIOCHEM BIOPHYS 2014; 456:104-7. [PMID: 24993967 DOI: 10.1134/s1607672914030065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Indexed: 11/23/2022]
Affiliation(s)
- A O Shpakov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, pr. Morisa Toreza 44, St. Petersburg, 194223, Russia,
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Derkach KV, Chistyakova OV, Shpakov AO. A change of hormonal regulation of adenylyl cyclase in epididymal adipose tissue of rats with experimental models of diabetes mellitus. J EVOL BIOCHEM PHYS+ 2014. [DOI: 10.1134/s002209301402001x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shpakova EA, Derkach KV, Shpakov AO. Effect of Peptides Corresponding to Extracellular Domains of Serotonin 1B/1D Receptors and Melanocortin 3 and 4 Receptors on Hormonal Regulation of Adenylate Cyclase in Rat Brain. Bull Exp Biol Med 2014; 156:658-62. [DOI: 10.1007/s10517-014-2419-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Indexed: 11/24/2022]
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Shpakov AO, Derkach KV, Chistyakova OV, Moyseyuk IV, Bondareva VM. The effect of long-term diabetes mellitus induced by treatment with streptozotocin in 6-week-old rats on functional activity of the adenylyl cyclase system. ACTA ACUST UNITED AC 2014. [DOI: 10.1134/s1990519x14010118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Shpakova EA, Derkach KV, Shpakov AO. Biological activity of lipophilic derivatives of peptide 562-572 of rat luteinizing hormone receptor. DOKL BIOCHEM BIOPHYS 2013; 452:248-50. [PMID: 24150584 DOI: 10.1134/s1607672913050116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Indexed: 11/23/2022]
Affiliation(s)
- E A Shpakova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, pr. Morisa Toreza 44, St. Petersburg, 194223, Russia
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Derkach KV, Moyseyuk IV, Shpakov AO. The influence of prolonged streptozotocin diabetes on the thyroid gland function in rats. DOKL BIOCHEM BIOPHYS 2013; 451:217-20. [PMID: 23975406 DOI: 10.1134/s1607672913040157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Indexed: 11/22/2022]
Affiliation(s)
- K V Derkach
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, pr. Morisa Toreza 44, St. Petersburg, 194223, Russia
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Derkach KV, Moyseyuk IV, Chistyakova OV, Shpakov AO. Androgen Deficiency in Male Rats with Prolonged Neonatal Streptozotocin Diabetes. Bull Exp Biol Med 2013; 155:339-42. [DOI: 10.1007/s10517-013-2148-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shpakov AO, Derkach KV, Chistyakova OV, Moiseyuk IV, Sukhov IB, Bondareva VM. Effect of intranasal insulin and serotonin on functional activity of the adenylyl cyclase system in myocardium, ovary, and uterus of rats with prolonged neonatal model of diabetes mellitus. J EVOL BIOCHEM PHYS+ 2013. [DOI: 10.1134/s0022093013020047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Derkach KV, Shpakov AO, Moyseuk IV, Chistyakova OV. The functional activity of adenylyl cyclase signaling system in the brain, myocardium, and testes of rats with 8- and 18-month neonatal diabetes. DOKL BIOCHEM BIOPHYS 2013; 448:43-5. [PMID: 23478986 DOI: 10.1134/s1607672913010122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Indexed: 12/12/2022]
Affiliation(s)
- K V Derkach
- Russian Academy of Sciences, St. Petersburg, Russia
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Shpakov AO, Derkach KV, Gryaznov AY, Motovilova NO. Regulatory properties of adenylyl and guanylyl cyclase in human spermatozoa. J EVOL BIOCHEM PHYS+ 2013. [DOI: 10.1134/s0022093013010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Shpakov AO, Derkach KV, Chistyakova OV, Moyseyuk IV, Bondareva VM. Alteration of hormonal sensitivity of adenylyl cyclase in the brain of rats with prolonged streptozotocin diabetes. DOKL BIOCHEM BIOPHYS 2012; 446:217-9. [PMID: 23132712 DOI: 10.1134/s160767291205002x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Indexed: 11/23/2022]
Affiliation(s)
- A O Shpakov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
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Shpakov AO. Somatostatin receptors and signaling cascades coupled to them. J EVOL BIOCHEM PHYS+ 2012. [DOI: 10.1134/s0022093012040020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Derkach KV, Shpakov AO, Gryaznov AY. Regulatory properties of cytosolic and membrane-bound adenylyl cyclases in the fraction of spermatozoa with different mobility. DOKL BIOCHEM BIOPHYS 2012; 445:200-2. [PMID: 22941103 DOI: 10.1134/s1607672912040059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Indexed: 11/23/2022]
Affiliation(s)
- K V Derkach
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
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Shpakov AO, Shpakova EA. [Development of non-hormonal regulators of adenylyl cyclase signaling system on the basis of peptides, derivatives of the third intracellular loop of somatostatin receptors]. BIOMEDITSINSKAIA KHIMIIA 2012; 58:446-456. [PMID: 23413689 DOI: 10.18097/pbmc20125804446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In the majority of the serpentine type receptors the third intracellular loop (ICL-3) is responsible for interaction with heterotrimeric G-proteins and for transduction of hormonal signal to the enzymes, generators of the second messengers. It was found that the peptides corresponding to ICL-3 influence functional activity of hormonal signaling systems in the absence of the hormone and, in consequence, can be considered as prototypes for the development of selective regulators of these systems. We have originally synthesized peptides corresponding to C-terminal regions 255-269 and 240 254 of ICL-3 of type 1 and 2 rat somatostatin receptors (Som1R and Som2R). Micromolar concentrations of these peptides activated Gi-proteins and inhibited forskolin-stimulated activity of adenylyl cyclase (AC) in rat brain tissues. The peptide 255-269 of Som1R is a selective antagonist of Som1R, and the peptide 240-254 of Som2R is an agonist of Som1R. So, the peptide 255-269 of Som1R decreased the regulatory effects of somatostatin and selective Som1R-agonist CH-275 realized via the receptor homologous to them, while the peptide 240-254 of Som2R, on the contrary, increased AC inhibitory action of CH-275. Both peptides insignificantly influenced regulatory effects of the Som2R-agonist octreotide. Summing up, the peptides studied by us are selective regulators of somatostatin-sensitive AC system. Using the peptides it was shown that ICL-3 of Som1R and Som2R includes the main molecular determinants that are responsible for activation of Gi-proteins and regulation of AC system by somatostatin and its analogues.
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Shpakova EA, Shpakov AO, Chistyakova OV, Moyseyuk IV, Derkach KV. Biological activity in vitro and in vivo of peptides corresponding to the third intracellular loop of thyrotropin receptor. DOKL BIOCHEM BIOPHYS 2012; 443:64-7. [PMID: 22562627 DOI: 10.1134/s1607672912020020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Indexed: 11/23/2022]
Affiliation(s)
- E A Shpakova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bol'shoi proezd 31, St. Petersburg, 119004 Russia
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Abstract
AbstractThe changes in hormone-regulated adenylyl cyclase (AC) signaling system implicated in control of the nervous, cardiovascular and reproductive systems may contribute to complications of diabetes mellitus (DM). We investigated the functional state of AC system in the brain, myocardium, ovary and uterus of rats with neonatal DM and examined the influence of intranasally administered insulin on the sensitivity of this system to biogenic amines and polypeptide hormones. The regulatory effects of somatostatin and 5-HT1BR-agonist 5-nonyloxytryptamine acting via Gi protein-coupled receptors were significantly decreased in DM and partially restored in insulin-treated rats. The effects of hormones, activators of AC, are changed in tissue- and receptorspecific manner, and intranasal insulin restored the effects rather close to the level in control. In insulin-treated non-diabetic rats, AC stimulating effects of isoproterenol and relaxin in the myocardium and of human chorionic gonadotropin in the ovaries were decreased, while the effects of hormones, inhibitors of AC, were increased. These data indicate that with intranasal insulin, Gi protein-mediated signaling pathways continue to gain strength. The obtained data on the influence of hormones on AC system in the brain, myocardium, ovary and uterus allow looking anew into the mechanisms of therapeutic effects of intranasal insulin.
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Shpakov AO. Signal protein-derived peptides as functional probes and regulators of intracellular signaling. JOURNAL OF AMINO ACIDS 2011; 2011:656051. [PMID: 22312467 PMCID: PMC3268021 DOI: 10.4061/2011/656051] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 06/01/2011] [Indexed: 12/21/2022]
Abstract
The functionally important regions of signal proteins participating in their specific interaction and responsible for transduction of hormonal signal into cell are rather short in length, having, as a rule, 8 to 20 amino acid residues. Synthetic peptides corresponding to these regions are able to mimic the activated form of full-size signal protein and to trigger signaling cascades in the absence of hormonal stimulus. They modulate protein-protein interaction and influence the activity of signal proteins followed by changes in their regulatory and catalytic sites. The present review is devoted to the achievements and perspectives of the study of signal protein-derived peptides and to their application as selective and effective regulators of hormonal signaling systems in vitro and in vivo. Attention is focused on the structure, biological activity, and molecular mechanisms of action of peptides, derivatives of the receptors, G protein α subunits, and the enzymes generating second messengers.
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Affiliation(s)
- Alexander O Shpakov
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Thorez avenue 44, 194223 St. Petersburg, Russia
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Shpakov AO, Shpakova EA. Development of non-hormonal regulators of the adenylyl cyclase signaling system based on the peptides, derivatives of the third intracellular loop of somatostatin receptors. BIOCHEMISTRY (MOSCOW) SUPPLEMENT SERIES B: BIOMEDICAL CHEMISTRY 2011. [DOI: 10.1134/s1990750811030127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shpakova EA, Shpakov AO. Peptides corresponding to intracellular regions of somatostatin receptors with agonist and antagonist activity. DOKL BIOCHEM BIOPHYS 2011; 437:68-71. [PMID: 21590378 DOI: 10.1134/s1607672911020049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Indexed: 11/23/2022]
Affiliation(s)
- E A Shpakova
- Institute of High-Molecular-Weight Compounds, Russian Academy of Sciences St. Petersburg, 199004, Russia
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