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Related Concept Videos

Overview Of Cell Separation And Isolation01:20

Overview Of Cell Separation And Isolation

Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
Stem Cell Culture01:17

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...

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Related Experiment Video

Updated: Jun 18, 2026

Single-Cell Sorting of Immunophenotyped Mesenchymal Stem Cells from Human Exfoliated Deciduous Teeth
13:44

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Published on: November 10, 2023

Stem cell separation: a bottleneck in stem cell therapy.

Kornelia Schriebl1, Shereen Lim, Andre Choo

  • 1Bioprocessing Technology Institute, ASTAR (Agency for Science, Technology and Research), Biopolis, Singapore. kornelia_schriebl@bti.a-star.edu.sg

Biotechnology Journal
|December 1, 2009
PubMed
Summary
This summary is machine-generated.

Magnetic activated cell sorting (MACS) is insufficient for removing undifferentiated embryonic stem cells (ESCs) for cell therapy. Achieving therapeutic purity requires too many steps, highlighting limitations in current purification technologies for safe ESC applications.

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Stromal Cell Isolation From Hematopoietic Organs
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Published on: January 26, 2024

Area of Science:

  • Stem Cell Biology
  • Regenerative Medicine
  • Cell Therapy

Background:

  • Embryonic stem cell (ESC) research offers therapeutic potential but is hindered by undifferentiated cells that can form teratomas.
  • Effective cell therapy requires the selective and quantitative removal of undifferentiated ESCs from cell populations.

Purpose of the Study:

  • To evaluate the efficacy of magnetic activated cell sorting (MACS) for the quantitative removal of undifferentiated ESCs.
  • To determine if MACS technology can achieve the necessary purity for clinical ESC applications.

Main Methods:

  • Utilized magnetic activated cell sorting (MACS) for the selective removal of undifferentiated ESCs.
  • Performed quantitative analysis of ESC clearance rates based on initial cell pool composition.
  • Employed simplified model calculations to predict the number of purification steps required.

Main Results:

  • Clearance rates for undifferentiated ESCs decreased as their initial quantity in the cell pool diminished.
  • Model calculations indicated that achieving therapeutic purity (e.g., <10(-1) cell per 10(9) cells) from 60% purity would necessitate approximately 31 purification steps.
  • A log clearance rate of 10, essential for therapeutic applications, is difficult to attain with current MACS technology.

Conclusions:

  • Current MACS technology is inadequate for achieving the high purity levels of ESCs required for safe and effective cell therapy.
  • Further advancements in purification methods are necessary to overcome the limitations of existing technologies for clinical ESC applications.