Glucokinase Inhibition: A Novel Treatment for Diabetes?

Maria S Remedi1,2,3, Colin G Nichols2,3

  • 1Division of Endocrinology, Metabolism, and Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO.

Diabetes
|January 20, 2023
PubMed

Insights

Inhibiting glycolysis, specifically glucokinase, may preserve pancreatic beta-cell function in diabetes. This approach aims to maintain glucose sensing and improve insulin secretion, counteracting glucotoxicity.

Area of Science:

  • Endocrinology
  • Metabolic diseases
  • Diabetes research

Background:

  • Chronic hyperglycemia impairs pancreatic beta-cell function.
  • This leads to glucotoxicity, beta-cell failure, and loss of functional beta-cell mass.
  • This occurs in various forms of diabetes.

Purpose of the Study:

  • To explore the paradoxical approach of inhibiting glycolysis to treat diabetes.
  • To investigate the role of targeted glucokinase inhibition.
  • To maintain glucose sensing and preserve beta-cell mass.

Main Methods:

  • This perspective discusses a novel therapeutic strategy.
  • Focuses on targeted inhibition of glucokinase, the initial enzyme in glycolysis.
  • Examines the potential impact on beta-cell function and insulin secretion.

Main Results:

  • Inhibiting glycolysis may paradoxically preserve beta-cell function.
  • Targeted glucokinase inhibition could maintain glucose sensing.
  • This strategy may prevent beta-cell loss and improve insulin secretion.

Conclusions:

  • Targeted inhibition of glucokinase presents a counterintuitive but promising strategy for diabetes treatment.
  • This approach could preserve functional beta-cell mass and improve insulin secretion.
  • Further research is warranted to validate this therapeutic concept.

Related Concept Videos

Oral Hypoglycemic Agents: Glinides01:06

Oral Hypoglycemic Agents: Glinides

Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively...
204
Dipeptidyl Peptidase 4 Inhibitors01:23

Dipeptidyl Peptidase 4 Inhibitors

Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a...
226
Glucagon-like Receptor Agonists01:24

Glucagon-like Receptor Agonists

Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
383
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors01:19

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors

α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are...
233
Oral Hypoglycemic Agents: Biguanides and Glitazones01:26

Oral Hypoglycemic Agents: Biguanides and Glitazones

Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood...
256
Hypoglycemia and Glucagon01:15

Hypoglycemia and Glucagon

Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
310