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Related Concept Videos

Induced Pluripotent Stem Cells01:13

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore called induced pluripotent stem...
Induced Pluripotent Stem Cells01:13

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore called induced pluripotent stem...
Induced Pluripotent Stem Cells01:06

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...
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.
Forced Transdifferentiation01:28

Forced Transdifferentiation

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.
Artificial transdifferentiation occurs...
Cellular Differentiation00:57

Cellular Differentiation

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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Updated: May 22, 2026

Generation of Induced Pluripotent Stem Cell-Derived iTenocytes via Combined Scleraxis Overexpression and 2D Uniaxial Tension
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Generation of Induced Pluripotent Stem Cell-Derived iTenocytes via Combined Scleraxis Overexpression and 2D Uniaxial Tension

Published on: March 1, 2024

Single-cell transcriptomics-informed induced pluripotent stem cells differentiation to tenogenic lineage.

Angela Papalamprou1,2,3, Victoria Yu1,2,3, Wensen Jiang1,2,3

  • 1Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, United States.

Elife
|May 21, 2026
PubMed
Summary

Researchers optimized human stem cell differentiation to the syndetome stage for tendon development. Inhibiting WNT signaling reduced neural off-target cells and improved syndetome induction efficiency for cell-based therapies.

Keywords:
WNTdevelopmental biologydifferentiationhumaniPSCsyndetometendon

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Area of Science:

  • Developmental Biology
  • Stem Cell Biology
  • Biochemistry

Background:

  • Axial tendons develop from paraxial mesoderm during vertebrate embryogenesis, progressing through sclerotome to syndetome stages.
  • Signaling pathway roles in early tendon differentiation are known, but syndetome specification nuances remain unclear.

Purpose of the Study:

  • To investigate and optimize syndetome specification from the sclerotome stage using human induced pluripotent stem cells.
  • To identify and mitigate off-target differentiation pathways during in vitro tendon development.

Main Methods:

  • Stepwise differentiation of human induced pluripotent stem cells (hiPSCs) using chemically defined media and small molecules.
  • Single-cell RNA-sequencing and pathway analysis to guide media modifications.
  • Transcriptomic analysis following WNT inhibitor addition at the somite stage.

Main Results:

  • Successfully differentiated hiPSCs to the syndetome stage.
  • Identified and characterized off-target neural differentiation associated with WNT overexpression.
  • Demonstrated that WNT inhibition post-somite stage eliminated neural cells and enhanced syndetome induction efficiency.

Conclusions:

  • Fine-tuning WNT signaling is critical for efficient and specific syndetome differentiation in vitro.
  • Optimized differentiation protocols are essential for advancing cell-based tendon therapies.
  • This study provides a refined method for generating syndetome cells from hiPSCs.