GIP (human)

CAS# 100040-31-1

GIP (human)

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Chemical structure

GIP (human)

3D structure

Chemical Properties of GIP (human)

Cas No. 100040-31-1 SDF Download SDF
PubChem ID 131954558 Appearance Powder
Formula C226H338N60O66S M.Wt 4983.58
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 1 mg/ml in water
SMILES CCC(C)C(C(=O)NC(CC1=CNC=N1)C(=O)NC(CCC(=O)N)C(=O)NC(CCC(=O)N)C(=O)NC(CC(=O)O)C(=O)NC(CC2=CC=CC=C2)C(=O)NC(C(C)C)C(=O)NC(CC(=O)N)C(=O)NC(CC3=CNC4=CC=CC=C43)C(=O)NC(CC(C)C)C(=O)NC(CC(C)C)C(=O)NC(C)C(=O)NC(CCC(=O)N)C(=O)NC(CCCCN)C(=O)NCC(=O)NC(CCCCN)C(=O)NC(CCCCN)C(=O)NC(CC(=O)N)C(=O)NC(CC(=O)O)C(=O)NC(CC5=CNC6=CC=CC=C65)C(=O)NC(CCCCN)C(=O)NC(CC7=CNC=N7)C(=O)NC(CC(=O)N)C(=O)NC(C(C)CC)C(=O)NC(C(C)O)C(=O)NC(CCC(=O)N)C(=O)O)NC(=O)C(CCCCN)NC(=O)C(CC(=O)O)NC(=O)C(CCSC)NC(=O)C(C)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(CC8=CC=C(C=C8)O)NC(=O)C(CC(=O)O)NC(=O)C(CO)NC(=O)C(C(C)CC)NC(=O)C(CC9=CC=CC=C9)NC(=O)C(C(C)O)NC(=O)CNC(=O)C(CCC(=O)O)NC(=O)C(C)NC(=O)C(CC1=CC=C(C=C1)O)N
Standard InChIKey MGXWVYUBJRZYPE-UHFFFAOYSA-N
Standard InChI InChI=1S/C226H338N60O66S/c1-21-113(11)181(285-218(343)165(107-288)278-203(328)150(88-125-60-64-131(292)65-61-125)264-212(337)163(99-179(310)311)274-217(342)164(106-287)279-222(347)183(115(13)23-3)283-215(340)152(87-123-47-29-26-30-48-123)275-224(349)185(120(18)289)280-174(301)105-245-192(317)142(70-75-175(302)303)252-187(312)117(15)248-190(315)134(232)85-124-58-62-130(291)63-59-124)220(345)250-119(17)189(314)254-146(76-82-353-20)199(324)272-160(96-176(304)305)210(335)258-141(57-39-44-81-231)200(325)282-182(114(12)22-2)221(346)276-156(92-129-103-241-109-247-129)206(331)260-144(67-72-167(234)294)197(322)259-145(68-73-168(235)295)198(323)271-161(97-177(306)307)211(336)265-151(86-122-45-27-25-28-46-122)214(339)281-180(112(9)10)219(344)277-158(94-171(238)298)209(334)266-154(90-127-101-243-136-52-34-32-50-133(127)136)205(330)263-149(84-111(7)8)202(327)262-148(83-110(5)6)201(326)249-118(16)188(313)253-143(66-71-166(233)293)196(321)255-137(53-35-40-77-227)191(316)244-104-173(300)251-138(54-36-41-78-228)193(318)256-139(55-37-42-79-229)195(320)269-157(93-170(237)297)208(333)273-162(98-178(308)309)213(338)267-153(89-126-100-242-135-51-33-31-49-132(126)135)204(329)257-140(56-38-43-80-230)194(319)268-155(91-128-102-240-108-246-128)207(332)270-159(95-172(239)299)216(341)284-184(116(14)24-4)223(348)286-186(121(19)290)225(350)261-147(226(351)352)69-74-169(236)296/h25-34,45-52,58-65,100-103,108-121,134,137-165,180-186,242-243,287-292H,21-24,35-44,53-57,66-99,104-107,227-232H2,1-20H3,(H2,233,293)(H2,234,294)(H2,235,295)(H2,236,296)(H2,237,297)(H2,238,298)(H2,239,299)(H,240,246)(H,241,247)(H,244,316)(H,245,317)(H,248,315)(H,249,326)(H,250,345)(H,251,300)(H,252,312)(H,253,313)(H,254,314)(H,255,321)(H,256,318)(H,257,329)(H,258,335)(H,259,322)(H,260,331)(H,261,350)(H,262,327)(H,263,330)(H,264,337)(H,265,336)(H,266,334)(H,267,338)(H,268,319)(H,269,320)(H,270,332)(H,271,323)(H,272,324)(H,273,333)(H,274,342)(H,275,349)(H,276,346)(H,277,344)(H,278,328)(H,279,347)(H,280,301)(H,281,339)(H,282,325)(H,283,340)(H,284,341)(H,285,343)(H,286,348)(H,302,303)(H,304,305)(H,306,307)(H,308,309)(H,310,311)(H,351,352)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of GIP (human)

DescriptionPotent insulinotropic hormone synthesized by duodenal K-cells. High affinity GIP receptor agonist (EC50 = 0.81 nM) that inhibits gastric acid secretion and stimulates pancreatic insulin release in response to glucose. Also affects lipid metabolism and displays mitogenic and antiapoptotic effects in pancreatic β-cells.

GIP (human) Dilution Calculator

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GIP (human) Molarity Calculator

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Preparing Stock Solutions of GIP (human)

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 0.2007 mL 1.0033 mL 2.0066 mL 4.0132 mL 5.0165 mL
5 mM 0.0401 mL 0.2007 mL 0.4013 mL 0.8026 mL 1.0033 mL
10 mM 0.0201 mL 0.1003 mL 0.2007 mL 0.4013 mL 0.5016 mL
50 mM 0.004 mL 0.0201 mL 0.0401 mL 0.0803 mL 0.1003 mL
100 mM 0.002 mL 0.01 mL 0.0201 mL 0.0401 mL 0.0502 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on GIP (human)

Gastric Inhibitory Peptide (GIP), human is thought to act as an inhibitor of gastric functions. Sequence: Tyr-Ala-Glu-Gly-Thr-Phe-Ile-Ser-Asp-Tyr-Ser-Ile-Ala-Met-Asp-Lys-Ile-His-Gln-Gln-Asp-Phe-Val-Asn-Trp-Leu-Leu-Ala-Gln-Lys-Gly-Lys-Lys-Asn-Asp-Trp-Lys-His-Asn-Ile-Thr-Gln.

In Vitro:Gastric Inhibitory Polypeptide (GIP) exerts various peripheral effects on adipose tissue and lipid metabolism, thereby leading to increased lipid deposition in the postprandial state,sup>[1]

References:
[1]. Meier JJ, et al. Gastric inhibitory polypeptide: the neglected incretin revisited. Regul Pept. 2002 Jul 15;107(1-3):1-13.

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References on GIP (human)

In vivo effect of glucose-dependent insulinotropic peptide (GIP) on the gene expression of calcitonin peptides in human subcutaneous adipose tissue.[Pubmed:22960196]

Regul Pept. 2012 Nov 10;179(1-3):29-32.

BACKGROUND: Increased plasma levels of calcitonin gene-related peptide-I (CGRP-I) and procalcitonin (Pro-CT) (both also named calcitonin peptides (CT peptides)) are associated with obesity and systemic inflammation. Glucose-dependent insulinotropic polypeptide (GIP), a nutrient-dependent incretin hormone, was recently found to induce CGRP-I and CT expression in human adipocytes in vitro. However, a physiological relevance of a possible interaction between GIP and CT peptides has not yet been studied. METHODS: In this study, we analyzed the effect of GIP on the expression of CGRP-I and CT mRNA in human subcutaneous adipose tissue within a randomized, controlled trial. Seventeen male obese subjects were infused with GIP [2.0 pmol kg(-1) min(-1) for 240 min] or placebo, either in the fasting state, during euglycemic-hyperinsulinemic (EC) or hyperglycemic-hyperinsulinemic clamps (HC). RESULTS: The CGRP-I gene expression was detected in all investigated adipose tissue samples, whereas very low CT expression was found in only 8 out of 116 analyzed samples. No significant influence of either GIP or glucose and insulin infusions on the CGRP-I and CT expression was observed in any of the individual experiments (GIP infusion, EC and HC) or in the combined analysis of all experiments with and without GIP. Furthermore, CGRP-I expression was not correlated with plasma GIP level before or after 240 min of infusions or clamps. CONCLUSION: In contrast to in vitro data, an acute application of GIP has no effect on mRNA expression of CT peptides in subcutaneous adipose tissue of obese humans.

Species-specific action of (Pro3)GIP - a full agonist at human GIP receptors, but a partial agonist and competitive antagonist at rat and mouse GIP receptors.[Pubmed:26359804]

Br J Pharmacol. 2016 Jan;173(1):27-38.

BACKGROUND AND PURPOSE: Specific, high potency receptor antagonists are valuable tools when evaluating animal and human physiology. Within the glucose-dependent, insulinotropic polypeptide (GIP) system, considerable attention has been given to the presumed GIP receptor antagonist, (Pro3)GIP, and its effect in murine studies. We conducted a pharmacological analysis of this ligand including interspecies differences between the rodent and human GIP system. EXPERIMENTAL APPROACH: Transiently transfected COS-7 cells were assessed for cAMP accumulation upon ligand stimulation and assayed in competition binding using (125) I-human GIP. Using isolated perfused pancreata both from wild type and GIP receptor-deficient rodents, insulin-releasing, glucagon-releasing and somatostatin-releasing properties in response to species-specific GIP and (Pro3)GIP analogues were evaluated. KEY RESULTS: Human (Pro3)GIP is a full agonist at human GIP receptors with similar efficacy (Emax ) for cAMP production as human GIP, while both rat and mouse(Pro3)GIP were partial agonists on their corresponding receptors. Rodent GIPs are more potent and efficacious at their receptors than human GIP. In perfused pancreata in the presence of 7 mM glucose, both rodent (Pro3)GIP analogues induced modest insulin, glucagon and somatostatin secretion, corresponding to the partial agonist activities observed in cAMP production. CONCLUSIONS AND IMPLICATIONS: When evaluating new compounds, it is important to consider interspecies differences both at the receptor and ligand level. Thus, in rodent models, human GIP is a comparatively weak partial agonist. Human (Pro3)GIP was not an antagonist at human GIP receptors, so there is still a need for a potent antagonist in order to elucidate the physiology of human GIP.

N-terminally and C-terminally truncated forms of glucose-dependent insulinotropic polypeptide are high-affinity competitive antagonists of the human GIP receptor.[Pubmed:26572091]

Br J Pharmacol. 2016 Mar;173(5):826-38.

BACKGROUND AND PURPOSE: Glucose-dependent insulinotropic polypeptide (GIP) affects lipid, bone and glucose homeostasis. High-affinity ligands for the GIP receptor are needed to elucidate the physiological functions and pharmacological potential of GIP in vivo. GIP(1-30)NH2 is a naturally occurring truncation of GIP(1-42). Here, we have characterized eight N-terminal truncations of human GIP(1-30)NH2 . EXPERIMENTAL APPROACH: COS-7 cells were transiently transfected with human GIP receptors and assessed for cAMP accumulation upon ligand stimulation or competition binding with (125) I-labelled GIP(1-42), GIP(1-30)NH2 , GIP(2-30)NH2 or GIP(3-30)NH2 . KEY RESULTS: GIP(1-30)NH2 displaced (125) I-GIP(1-42) as effectively as GIP(1-42) (Ki 0.75 nM), whereas the eight truncations displayed lower affinities (Ki 2.3-347 nM) with highest affinities for GIP(3-30)NH2 and GIP(5-30)NH2 (5-30)NH2 . Only GIP(1-30)NH2 (Emax 100% of GIP(1-42)) and GIP(2-30)NH2 (Emax 20%) were agonists. GIP(2- to 9-30)NH2 displayed antagonism (IC50 12-450 nM) and Schild plot analyses identified GIP(3-30)NH2 and GIP(5-30)NH2 as competitive antagonists (Ki 15 nM). GIP(3-30) NH2 was a 26-fold more potent antagonist than GIP(3-42). Binding studies with agonist ((125) I-GIP(1-30)NH2 ), partial agonist ((125) I-GIP(2-30)NH2 ) and competitive antagonist ((125) I-GIP(3-30)NH2 ) revealed distinct receptor conformations for these three ligand classes. CONCLUSIONS AND IMPLICATIONS: The N-terminus is crucial for GIP agonist activity. Removal of the C-terminus of the endogenous GIP(3-42) creates another naturally occurring, more potent, antagonist GIP(3-30)NH2 , which like GIP(5-30)NH2 , was a high-affinity competitive antagonist. These peptides may be suitable tools for basic GIP research and future pharmacological interventions.

Disruption of GIP/GIPR axis in human adipose tissue is linked to obesity and insulin resistance.[Pubmed:24512489]

J Clin Endocrinol Metab. 2014 May;99(5):E908-19.

CONTEXT: Glucose-dependent insulinotropic peptide (GIP) has a central role in glucose homeostasis through its amplification of insulin secretion; however, its physiological role in adipose tissue is unclear. OBJECTIVE: Our objective was to define the function of GIP in human adipose tissue in relation to obesity and insulin resistance. DESIGN: GIP receptor (GIPR) expression was analyzed in human sc adipose tissue (SAT) and visceral adipose (VAT) from lean and obese subjects in 3 independent cohorts. GIPR expression was associated with anthropometric and biochemical variables. GIP responsiveness on insulin sensitivity was analyzed in human adipocyte cell lines in normoxic and hypoxic environments as well as in adipose-derived stem cells obtained from lean and obese patients. RESULTS: GIPR expression was downregulated in SAT from obese patients and correlated negatively with body mass index, waist circumference, systolic blood pressure, and glucose and triglyceride levels. Furthermore, homeostasis model assessment of insulin resistance, glucose, and G protein-coupled receptor kinase 2 (GRK2) emerged as variables strongly associated with GIPR expression in SAT. Glucose uptake studies and insulin signaling in human adipocytes revealed GIP as an insulin-sensitizer incretin. Immunoprecipitation experiments suggested that GIP promotes the interaction of GRK2 with GIPR and decreases the association of GRK2 to insulin receptor substrate 1. These effects of GIP observed under normoxia were lost in human fat cells cultured in hypoxia. In support of this, GIP increased insulin sensitivity in human adipose-derived stem cells from lean patients. GIP also induced GIPR expression, which was concomitant with a downregulation of the incretin-degrading enzyme dipeptidyl peptidase 4. None of the physiological effects of GIP were detected in human fat cells obtained from an obese environment with reduced levels of GIPR. CONCLUSIONS: GIP/GIPR signaling is disrupted in insulin-resistant states, such as obesity, and normalizing this function might represent a potential therapy in the treatment of obesity-associated metabolic disorders.

Description

Gastric Inhibitory Peptide (GIP), human is thought to act as an inhibitor of gastric functions.

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