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1kits（10Vials）
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▎Tirzepatide Structure
Source: PubChem | Sequence: Tyr-{Aib}-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Ile-{Aib}-Leu-Asp-Lys-Ile-Ala-Gln-{diacid-C20-gamma-Glu-(AEEA)2-Lys}-Ala-Phe-Val-Gln-Trp-Leu-Ile-Ala-Gly-Gly-Pro-Ser-Ser-Gly-Ala-Pro-Pro-Pro-Ser-NH2 Molecular Formula: C225H348N48O68 Molecular Weight: 4813 g/mol CAS Number: 2023788-19-2 PubChem CID: 163285897 Synonyms: Zepbound; Mounjaro |
▎Tirzepatide Research
What is the research background of Tirzepatide?
The research background of Tirzepatide primarily stems from the exploration of diabetes treatment drugs and the demand for weight management drugs. Traditional diabetes treatment drugs have limitations, while GLP-1 receptor agonists demonstrate significant efficacy in improving blood glucose control, prompting researchers to develop more effective drugs of the same class. As a GIP/GLP-1 dual receptor agonist, Tirzepatide can better regulate blood glucose levels. The global increase in overweight and obese populations has made weight control an urgent clinical need. GLP-1 receptor agonists have weight-reducing effects, making them a target for weight loss. Tirzepatide has gained attention due to its favorable weight-loss outcomes.
What is the mechanism of action of Tirzepatide?
Dual receptor agonist action:
Tirzepatide is a dual glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) receptor agonist [1,2](Wong E, 2023; Kumar D, 2022). GLP-1 and GIP are both incretin hormones produced in the intestine, playing a crucial role in maintaining glucose homeostasis. Tirzepatide exerts a synergistic effect by simultaneously activating GLP-1 and GIP receptors, thereby regulating blood glucose levels.
Regulation of insulin and glucagon secretion:
It increases insulin synthesis and secretion while reducing glucagon release in a glucose-dependent manner. When blood glucose levels rise, Tirzepatide stimulates pancreatic β-cells to secrete insulin, promoting glucose uptake and utilization, thereby lowering blood glucose levels; simultaneously, it inhibits pancreatic α-cells from secreting glucagon, reducing hepatic glucose output, further lowering blood glucose levels, and effectively controlling fasting and postprandial blood glucose levels[1,3].
Other mechanisms of action:
Tirzepatide also promotes satiety, which may be related to activating GLP-1 receptors, acting on the central nervous system, and influencing appetite regulation centers, leading patients to reduce food intake and thereby aiding in weight loss. It also delays gastric emptying, prolonging the time food remains in the stomach and slowly entering the small intestine, thereby preventing rapid increases in blood glucose levels[1].
Figure 1 Mechanism of action of Tirzepatide [6].
What are the applications of Tirzepatide?
Treatment of type 2 diabetes:
Tirzepatide is approved for the treatment of adult patients with type 2 diabetes as an adjunct to diet and exercise. The SURPASS trial demonstrated that Tirzepatide significantly reduces hemoglobin A1c (HbA1c) levels, with reductions ranging from -1.87% to -2.59% (-20 to -28 mmol/mol). It also demonstrates superior glycemic control compared to certain GLP-1 receptor agonists, such as semaglutide 1 mg in the SUPRASS-2 trial. Additionally, it can reduce body weight, with weight loss ranging from -6.2 to -12.9 kg in clinical studies, which is particularly significant for patients with type 2 diabetes who often have overweight or obesity issues [1,4].
Obesity treatment:
Since Tirzepatide promotes satiety, reduces food intake, and promotes weight loss, it has potential therapeutic value for patients with obesity. Studies show that it can reduce weight by over 20%, improve patients' metabolic status, and serve as a new treatment option for obesity, helping obese patients lose weight and reduce the risk of various diseases associated with obesity[1,2].
Reduced risk of cardiovascular disease:
Patients with type 2 diabetes often face an increased risk of cardiovascular disease. In addition to lowering blood sugar and weight, Tirzepatide has positive effects on cardiovascular-related indicators, including reducing blood pressure, decreasing visceral fat accumulation, and lowering circulating triglyceride levels, thereby helping to reduce the risk of cardiovascular disease and improve patients' cardiovascular outcomes[4].
Potential treatment for non-alcoholic steatohepatitis (NASH):
Tirzepatide has potential therapeutic effects on NASH. By improving insulin sensitivity and regulating glucose and lipid metabolism, it can reduce hepatic steatosis and inflammation, offering a new direction for NASH treatment[5].
Conclusion
As a GIP/GLP-1 dual receptor agonist, Tirzepatide has demonstrated significant efficacy in the treatment of diabetes and metabolic disorders. By regulating insulin and glucagon secretion, delaying gastric emptying, and enhancing satiety, it effectively lowers hemoglobin A1c levels and reduces patient weight. Additionally, the drug improves cardiovascular risk factors such as lipid levels and blood pressure and demonstrates efficacy in non-alcoholic steatohepatitis.
About The Author
The above-mentioned materials are all researched, edited and compiled by Cocer Peptides.
Scientific Journal Author
De Block C is associated with the University of Antwerp and its related institutions in Belgium, including the Inflamed Ctr Excellence, University Hospital Antwerp (UZA and Univ Hosp Antwerp), and the Infla Med Ctr Excellence. His research spans several disciplines, such as Endocrinology & Metabolism, where he focuses on hormones and metabolic disorders; Gastroenterology & Hepatology, exploring digestive and liver diseases; General & Internal Medicine, addressing the diagnosis and management of common internal diseases; Nutrition & Dietetics, investigating nutrition and its health impacts; and Urology & Nephrology, studying the pathology and clinical practice of urinary and kidney diseases. He is a scholar with significant contributions to multiple medical fields. De Block C is listed in the reference of citation [4].
