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Human Glucagon Like Peptide-1

Certificate of Analysis and Data Sheet

Source:

Catalog No.
HOR-284

Background:

GLP-1 is a incretion hormone, which has been shown to stimulate secretion of insulin in the presence of elevated blood glucose concentrations, but not during periods of low blood glucose concentrations (hypoglycemia). GLP-1 is released from gut endocrine cells in response to nutrient ingestion. The hormone is a physiologic mediator of satiety and regulates energy absorption and disposal. GLP-1 is an insulinotropic hormone that has the ability to render pancreatic beta cells glucose-competent. It has been used in the therapy of type-2 diabetes. GLP-1 has cytokine activity, although it is not classified as such due its small size GLP-1 enhances cell differentiation, plays a role in tissue regeneration, and mediates cytoprotection.

Description :

GLP-1 is a single, non-glycosylated, polypeptide chain containing 30 amino acids and having a molecular mass of 3298.7 Dalton.
GLP-1 is a incretion hormone, which has been shown to stimulate secretion of insulin in the presence of elevated blood glucose concentrations, but not during periods of low blood glucose concentrations (hypoglycemia). GLP-1 is released from gut endocrine cells in response to nutrient ingestion. The hormone is a physiologic mediator of satiety and regulates energy absorption and disposal.
GLP-1 is an insulinotropic hormone that has the ability to render pancreatic beta cells glucose-competent. It has been used in the therapy of type-2 diabetes.
GLP-1 has activities of cyokines, although it is not classified as such due its small size GLP-1 enhances cell differentiation, plays a role in tissue regeneration, and mediates cytoprotection.
GLP-1 is purified by proprietary chromatographic techniques.

Physical Appearance:

Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation:

The protein (1mg/ml) was lyophilized with no additives.

Solubility:

It is recommended to reconstitute the lyophilized GLP-1 in sterile 18MΩ-cm H2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.

Stability:

Lyophilized Human GLP-1 although stable at room temperature for 3 weeks, should be stored desiccated below -180C. Upon reconstitution Human GLP-1 should be stored at 40C between 2-7 days and for future use below -180C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please avoid freeze-thaw cycles.

Purity:

Greater than 98.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.

Amino acid sequence:

The sequence of the first five N-terminal amino acids was determined and was found to be His-Ala-Glu-Gly-Thr.

Dimers and aggregates:

Less than 1% as determined by silver-stained SDS-PAGE gel analysis.

Biological Activity:

1. Regulates Glucose levels rapidly
2. Reduces Insulin resistence
3. Reduces Glucagon
4. Reduces HbA1c
5. Stimulates beta cell grwoth which stimulates insulin production

Endotoxin:

Less than 0.1 ng/ug (IEU/ug) of GLP-1.

Protein content:

Protein quantitation was carried out by two independent methods:
1. UV spectroscopy at 280 nm.
2. Analysis by RP-HPLC, using a calibrated solution of GLP-1 as a Reference Standard.

Usage:

Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.


Gene:

Name:GCG

Protein synonyms/aliases:

Glucagon precursor

Precursor's functional components:

Glicentin
Glicentin-related polypeptide(GRPP)
Oxyntomodulin (OXY)
    (OXM)
Glucagon
Glucagon-like peptide 1(GLP-1)
Glucagon-like peptide 1(7-37)
    (GLP-1(7-37))
Glucagon-likepeptide 1(7-36)
    (GLP-1(7-36))
Glucagon-like peptide 2 (GLP-2) .

Protein Family:

Belongs to the glucagon family.

Protein Domains:


Domains:
IPR000532   Glucagon/GIP/secretin/VIP

Related proteins:

Recombinant Exendin-4
Recombinant Human Glucagon Like Peptide-1 (7-36)
Human Growth Hormone Releasing Hormone

Protein links:

Human Glucagon Like Peptide-1 protein domain

Human Glucagon Like Peptide-1 protein family


Precursor- Protein structure and amino acid sequence:


Latest Publications:

1. Glucagon-like peptide 1 abolishes the postprandial rise in triglyceride concentrations and lowers levels of non-esterified fatty acids in humans.
Diabetologia 2006 Jan 31;:1-7
2. Exendin-4, but not glucagon-like peptide-1, is cleared exclusively by glomerular filtration in anaesthetised pigs.
Diabetologia 2006 Jan 31;:1-7
3. Emerging therapies mimicking the effects of amylin and glucagon-like Peptide 1.
Diabetes Care 2006 Feb;29(2):435-49
4. Nutrient-stimulated glucagon-like peptide 1 release after body-weight loss and weight maintenance in human subjects.
Br J Nutr 2006 Jan;95(1):160-7
5. [Effect of glucagon-like peptide 2 on the intestinal mucosal immunity and correlative cytokines in mice with gut ischemia/reperfusion injury]
Zhonghua Wei Chang Wai Ke Za Zhi 2006 Jan;9(1):67-70
6. Exogenous expression of glucagon-like peptide 1 receptor and human insulin in AtT-20 corticotrophs confers cAMP-mediated gene transcription and insulin secretion.
J Endocrinol 2005 Dec;187(3):419-27

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中華民國95年06月06日更新