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Design and application of a long-acting hypoglycemic peptide

A hypoglycemic, long-acting technology, applied in the field of diabetes treatment, can solve the problem of prolonging the half-life of GLP-1, achieve stable chemical properties, and avoid local itching

Active Publication Date: 2021-03-09
CHINA PHARM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since GLP-1 is rapidly filtered and eliminated by the kidneys, resistance to degradation by DPP-IV enzymes can only prolong the half-life of GLP-1 to a certain extent

Method used

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  • Design and application of a long-acting hypoglycemic peptide
  • Design and application of a long-acting hypoglycemic peptide
  • Design and application of a long-acting hypoglycemic peptide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] solid-phase synthesis.

[0061] 1. Synthesis of cysteine-modified polypeptide chain

[0062] 1.1. Resin swelling

[0063] Weigh 50 mg of Fmoc-Rink amide-MBHA Resin (degree of substitution 0.4 mmol / g), swell with 7 mL of DCM for 30 min, filter to remove DCM, then swell with 10 mL of NMP for 30 min, and finally rinse with NMP, DCM, and 7 mL of NMP.

[0064] 1.2. Removal of Fmoc protecting group

[0065] Put the swollen resin into the reactor, add 7 mL of 25% piperidine / NMP (V / V) solution containing 0.1M HOBt, react for 1 min, and filter off the solution after completion; then add 25% piperidine containing 0.1M HOBt Pyridine / NMP (V / V) solution 7mL, reacted for 4min, filtered off the solution after completion, washed with NMP. A resin free of the initially attached Fmoc protecting group is obtained.

[0066] 1.3. Synthesis of Fmoc-Ser(tBu)-Rink amide-MBHA Resin

[0067] Fmoc-Ser(tBu)-OH (15.3 mg, 0.04 mmol), HBTU (15.1 mg, 0.04 mmol), HOBt (5.4 mg, 0.04 mmol) and DIP...

Embodiment 2

[0090]

[0091] The synthesis method is the same as in Example 1, and the theoretical relative molecular mass is 5028.2. ESI-MS m / z: Calcd.[M+3H] 3+ 1677.1, [M+4H] 4+ 1258.1; Found[M+3H] 3+ 1677.8, [M+4H] 4+ 1258.5.

Embodiment 3

[0093]

[0094] The synthesis method is the same as in Example 1, and the theoretical relative molecular mass is 5015.1. ESI-MS m / z: Calcd.[M+3H] 3+ 1672.7, [M+4H] 4+ 1254.8; Found[M+3H] 3+ 1672.2, [M+4H] 4+ 1254.3.

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PUM

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Abstract

The invention relates to the design and synthesis method of a novel long-acting hypoglycemic peptide. Exendin-4 derivatives with longer pharmacological action time were obtained by modifying Exendin-4. The synthesis of the target polypeptide was quickly realized through the solid phase synthesis method of orthogonal protection strategy. The crude product was purified and lyophilized to obtain long-acting chemical derivatives. Glycopeptides.

Description

technical field [0001] The invention relates to the design and application of a class of long-acting hypoglycemic peptides in the field of diabetes treatment. Background technique [0002] Diabetes is the third chronic non-communicable disease that seriously threatens human health after tumors and cardiovascular diseases. Currently, there are about 300 million diabetics in the world, which is expected to increase to 500 million by 2025. Clinically, intensive insulin therapy is used to delay the progression of diabetes, but insulin injections have the risk of hypoglycemia. The therapeutic effect is affected by factors such as dose, injection site, and injection route, and there are large individual differences. If insulin is used carelessly, severe hypoglycemic side effects will occur. [0003] Glucagon-like peptide-1 (GLP-1) is a glucose-dependent incretin hormone. GLP-1 stimulates insulin secretion without hypoglycemia. This glucose-dependent insulin-stimulating property ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07K14/605A61K38/26A61P3/10
CPCA61K38/00C07K14/605
Inventor 黄文龙钱海孙李丹蔡星光韩京戴雨轩褚莹莹周洁
Owner CHINA PHARM UNIV
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