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Updated: May 22, 2026

A Novel Culture Model for Human Pluripotent Stem Cell Propagation on Gelatin in Placenta-conditioned Media

A Novel Culture Model for Human Pluripotent Stem Cell Propagation on Gelatin in Placenta-conditioned Media

Published on: August 3, 2015

Array-comparative genomic hybridization characterization of human pluripotent stem cells.

Aaron M Elliott¹, Kristi A Hohenstein Elliott, Anja Kammesheidt

¹Ambry Genetics, Aliso Viejo, CA, USA. aelliott@ambrygen.com

Methods in Molecular Biology (Clifton, N.J.)

|April 25, 2012

Summary

Human stem cells often acquire hidden chromosomal abnormalities during culture. A new high-resolution microarray detects these subtle genetic changes missed by standard methods, improving stem cell safety.

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Establishment of Genome-edited Human Pluripotent Stem Cell Lines: From Targeting to Isolation

Establishment of Genome-edited Human Pluripotent Stem Cell Lines: From Targeting to Isolation

Published on: February 2, 2016

Area of Science:

Stem Cell Biology
Genetics
Genomics

Background:

Human embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) can develop chromosomal aberrations during culture adaptation.
Standard karyotype analysis offers low resolution and misses many acquired genetic abnormalities.
Array-comparative genomic hybridization (aCGH) has revealed sub-karyotype resolution abnormalities in stem cells.

Purpose of the Study:

To develop a high-resolution detection method for chromosomal aberrations in human stem cells.
To identify genetic changes routinely missed by conventional karyotyping.

Main Methods:

Design and utilization of a custom 44K probe microarray.
Focusing probe density on stem cell-associated and cancer-related genes.
Application of the microarray for enhanced genomic profiling of stem cell lines.

Main Results:

The custom microarray provides higher resolution than standard karyotyping.
It is capable of detecting smaller chromosomal abnormalities.
This method enhances the identification of genetic alterations in cultured stem cells.

Conclusions:

A custom stem cell-focused microarray offers superior resolution for detecting chromosomal aberrations.
This technology addresses limitations of current screening methods for stem cell lines.
Improved detection of genetic instability is crucial for safe stem cell applications.