Researchers have developed a treatment that could restore insulin production, a breakthrough in the fight against diabetes. Diabetes is a growing global problem, with the Diabetes Fund referring to it as a full-blown crisis. A recent study found that the number of adults with type 1 or 2 diabetes worldwide has risen above 800 million, more than four times as many as in 1990. However, there is now hope for all these people, as researchers have been tirelessly searching for a treatment to cure this stubborn disease for over 15 years, and now they have promising news.
How does diabetes occur? Diabetes occurs when the body doesn’t produce enough insulin or when cells become less sensitive to insulin. Insulin is a hormone produced by beta cells in the pancreas that helps regulate blood sugar levels. There are two main types of diabetes. In type 1 diabetes, the immune system attacks and destroys the beta cells in the pancreas, causing the body to lose its ability to produce insulin. This type usually occurs in young people. In type 2 diabetes, the body still produces insulin, but cells become resistant to the hormone, leading to elevated blood sugar levels and eventually organ and tissue damage.
In total, 1.2 million people in the Netherlands have diabetes, slightly more men than women. Nine out of ten people with diabetes have type 2. Additionally, it is estimated that between 1.3 and 1.5 million people have prediabetes, a precursor to the disease, and they have a strongly increased risk of developing diabetes. Of the current Dutch people aged 45 and older, it is expected that one in three will get diabetes in the future.
In 2015, researchers discovered that a drug called harmine can help regenerate beta cells. Harmine is part of a group of drugs called DYRK1A inhibitors. In 2019 and 2020, scientists found that these inhibitors can work together with other substances, such as GLP-1 receptor agonists (such as semaglutide and exenatide), to strengthen the regeneration of beta cells. This year, they showed that harmine alone can increase the mass of beta cells by 300%, and together with a GLP-1RA, even by 700%.
Alpha cells
However, a burning question is how harmine exactly lets beta cells regenerate, and that’s what researchers investigated in the new study. The team discovered that the new beta cells may originate from an unexpected source: alpha cells, another type of cell in the pancreas. Since alpha cells are present in large quantities in people with type 1 or type 2 diabetes, they could be the key to restoring beta cells in people with one of the two forms of diabetes.
In summary, researchers have made groundbreaking new insights into how regenerative medicines for beta cells work, and the discovery that alpha cells in the pancreas can be converted into beta cells offers new hope for both type 1 and type 2 diabetes patients. “This exciting discovery suggests that drugs from the harmine family may be able to stimulate the conversion of cells in the human islets of Langerhans (small groups of cells in the pancreas that produce important hormones, including insulin)”, concludes researcher Esra Karakose. “This would mean that people with all forms of diabetes have a large ‘reservoir’ of potential future beta cells waiting to be activated by medications like harmine.”
This could mean that patients no longer have to inject insulin daily. If this approach is further developed, affordable treatment options for millions of diabetics worldwide could become a reality. “A simple pill, perhaps combined with a GLP-1RA like semaglutide, could be accessible for all those people with diabetes”, concludes co-author Andrew Stewart.
Researchers Edge Closer to a Cure for Diabetes
Researchers around the world are making significant strides in understanding and treating diabetes, bringing us closer to the ultimate goal of a cure. Diabetes, a chronic metabolic disorder characterized by elevated blood glucose levels due to insulin resistance or insufficient insulin secretion, affects millions of people globally. Two main types of diabetes exist—type 1 and type 2—each requiring different approaches to treatment and potential cure.
Type 1 Diabetes: Progress in Stem Cell Research and Immunotherapy
Type 1 diabetes (T1D) is an autoimmune disease where the immune system attacks and destroys the insulin-producing beta cells in the pancreas. Here are some recent advances hinting at a possible cure:
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Stem Cell Transplantation: Researchers are exploring the use of stem cells to regenerate beta cells or create insulin-producing cell replacements. In a Phase I clinical trial, researchers at the University of California, Los Angeles (UCLA), successfully transplanted stem cell-derived beta cells into patients with T1D, with promising results.
- Immunotherapy: By targeting the immune system, scientists aim to stop or slow down its attack on beta cells. Several trials are investigating the use of immunotherapy, such as teplizumab, which has shown promise in delaying the onset of T1D in high-risk individuals.
Type 2 Diabetes: Innovative Therapies and Lifestyle Interventions
Type 2 diabetes (T2D) results from a combination of insulin resistance and insufficient insulin production. While there’s no cure yet, recent research offers hope:
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New Drug Classes: Novel medications targeting previously unexplored mechanisms are being developed. For instance, grammatical and frown therapy, which targets selective sodium-glucose cotransporter 2 (SGLT2) inhibitors, has shown significant improvements in controlling blood sugar levels and reducing cardiovascular risks.
- Bariatric Surgery for T2D Reversal: Though not a new procedure, bariatric surgery has been found to induce remission in T2D in some patients. Researchers are exploring the underlying mechanisms, such as rapid and profound weight loss, gut hormone changes, and modifications of bile acids, to develop less invasive and more targeted therapies.
Promise of a Diabetes Cure
While a complete cure for diabetes remains elusive, recent research provides solid grounds for optimism. By harnessing advanced technologies like stem cell engineering, immunotherapy, and innovative drug discovery, scientists are edging closer to a point where diabetes can be effectively prevented, cured, or managed.
Moreover, ongoing research into the complex interplay of genetic, environmental, and lifestyle factors contributing to diabetes will help tailor personalized prevention and treatment strategies. With continued investment in research and collaboration among scientists, healthcare providers, and policymakers, the dream of a diabetes-free world may soon become a reality.
Sources:
- American Diabetes Association
- Diabetes Research Institute
- UCLA Health
- Journal of Clinical Investigation, Nature Medicine, The Lancet, and other scientific journals
