Extrinsic factors promoting insulin producing cell-differentiation and insulin expression enhancement-hope for

Shruti Dave1

  • 1Institute of Kidney Diseases & Research Centre (IKDRC) - Dr. H. L. Trivedi Institute of Transplantation Sciences (ITS), Civil Hospital Campus, Asarwa, Ahmedabad - 380016, Gujarat, India. shrutiddave@yahoo.com.

Insights

Stem cell therapy offers a promising approach for diabetes mellitus (DM) by generating insulin-producing cells. Specific external factors can guide stem cell differentiation, potentially leading to insulin independence for patients.

Area of Science:

  • Endocrinology
  • Regenerative Medicine
  • Cell Biology

Background:

  • Diabetes mellitus (DM) is an autoimmune disorder causing beta-cell destruction and impaired blood sugar control.
  • Current pharmacological treatments, including insulin therapy, often fail to achieve optimal glycemic control.
  • Stem cells present a potential source for generating insulin-producing cells (IPCs) in vitro for therapeutic applications.

Purpose of the Study:

  • To review extrinsic factors that promote stem cell differentiation into insulin-producing cells (IPCs) in vitro.
  • To explore the potential of these factors as a therapeutic strategy for managing diabetes mellitus.

Main Methods:

  • Review of scientific literature on stem cell differentiation and factors influencing pancreatic lineage development.
  • Analysis of extrinsic signals and transcription factors involved in beta-cell differentiation.
  • Identification of key factors facilitating in vitro IPC generation from stem cells.

Main Results:

  • Stem cell differentiation into IPCs requires both intrinsic and extrinsic factors.
  • Islet growth factors can enhance beta-cell replication, function, and survival.
  • Specific extrinsic factors and signaling pathways are crucial for inducing beta-cell specific transcription factors and insulin production.

Conclusions:

  • In vitro differentiation of stem cells into IPCs is achievable through the influence of identified extrinsic factors.
  • This approach holds promise for developing novel therapeutic strategies for diabetes mellitus.
  • Advancements in understanding cell differentiation pathways may lead to insulin independence for DM patients.

Related Concept Videos

Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are co-secreted in...
Hormones Regulating Blood Glucose01:16

Hormones Regulating Blood Glucose

Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
iPS Cell Differentiation01:22

iPS Cell Differentiation

The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
Insulin: The Receptor and Signaling Pathways01:28

Insulin: The Receptor and Signaling Pathways

Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but this inhibition is released...
Insulin Secretory Vesicles01:05

Insulin Secretory Vesicles

Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...