Error-free and error-prone DNA repair gene expression data through reprogramming and passage in human iPS cells.

Area of Science:

• Molecular Biology
• Genetics
• Stem Cell Biology

Background:

• Cellular reprogramming can alter gene expression profiles.
• DNA repair mechanisms are crucial for maintaining genomic integrity.
• Pluripotency involves complex regulatory networks, including gene expression.

Purpose of the Study:

• To confirm alterations in DNA repair-related gene expression following cell reprogramming.
• To investigate the maintenance of these expression changes in pluripotent cells.
• To evaluate DNA repair gene expression as a quality control indicator for pluripotency.

Main Methods:

• Analysis of DNA repair-related gene expression in a new cell line post-reprogramming.
• Assessment of gene expression stability across overlapping passages.
• Correlation of DNA repair gene expression with pluripotency markers OCT3/4 and NANOG.

Main Results:

• Confirmed reprogramming-induced changes in DNA repair gene expression in a distinct cell line.
• Observed sustained alterations in homologous recombination (HR) and mismatch repair (MMR) gene expression.
• Demonstrated decreased expression of error-prone translesion synthesis (TLS) polymerase.
• Found that these expression changes were maintained by pluripotency factors OCT3/4 and NANOG.

Conclusions:

• Reprogramming significantly alters DNA repair gene expression, promoting accurate genomic information.
• The observed changes in DNA repair gene expression are stable and linked to pluripotency.
• Altered DNA repair gene expression serves as a potential indicator for pluripotent cell quality control.