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Tissue Renewal without Stem Cells01:23

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After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
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Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

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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.
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Cellular Differentiation00:57

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How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
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Diabetes Mellitus: Overview and Type I Subtype01:22

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Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
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Forced Transdifferentiation01:28

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Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
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Multipotency of Hematopoietic Stem Cells01:19

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The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
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Updated: Feb 28, 2026

Differentiation of Human Pluripotent Stem Cells Into Pancreatic Beta-Cell Precursors in a 2D Culture System
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Beta cell heterogeneity: an evolving concept.

Dana Avrahami1, Agnes Klochendler2, Yuval Dor2

  • 1Endocrinology and Metabolism Service, Department of Internal Medicine, Hadassah-Hebrew University Medical Center, POB 12000, 91120, Jerusalem, Israel.

Diabetologia
|June 10, 2017
PubMed
Summary
This summary is machine-generated.

Beta cell heterogeneity, the functional differences between individual insulin-producing cells, is increasingly studied using advanced single-cell technologies. Understanding this variability is crucial for insights into diabetes and beta cell biology.

Keywords:
Beta cellsCellular heterogeneityDiabetesIslets of LangerhansPancreasReviewSingle-cell proteomicsSingle-cell transcriptomicsTranscriptional plasticity

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Area of Science:

  • Endocrinology
  • Cell Biology
  • Metabolic Disease Research

Background:

  • Beta cells are defined by insulin production and secretion, but exhibit functional variability.
  • The significance of this cell-to-cell variability in beta cell function remains largely unknown.
  • Recent studies highlight alterations in beta cell subpopulations in diabetes.

Purpose of the Study:

  • To provide a concise overview of recent advancements in beta cell heterogeneity research.
  • To discuss the implications of beta cell heterogeneity for understanding beta cell biology and pathology.
  • To explore whether observed heterogeneity represents stable cell types or dynamic cell states.

Main Methods:

  • Utilizing heterogeneous gene expression for isolating beta cell subpopulations.
  • Employing single-cell proteomic technologies like mass spectrometry and CyTOF.
  • Leveraging single-cell transcriptomic analysis via massively parallel RNA sequencing.
  • Advancing single beta cell metabolomics and epigenomics tools.

Main Results:

  • Novel single-cell technologies enable detailed evaluation of beta cell proteomes and transcriptomes.
  • Early studies in 2016 provided initial insights into the capabilities and limitations of these approaches.
  • Observed beta cell heterogeneity may represent distinct cell types or dynamic states.

Conclusions:

  • Significant progress has been made in characterizing beta cell heterogeneity at the single-cell level.
  • Further research is needed to definitively distinguish between stable beta cell types and dynamic states.
  • Understanding beta cell heterogeneity is critical for advancing diabetes research and therapeutic strategies.