Aldehyde dehydrogenase as a marker for stem cells.

Area of Science:

• Biochemistry
• Cell Biology
• Oncology

Background:

• Aldehyde dehydrogenase (ALDH) genes, particularly ALDH1A1, are highly expressed in embryonal and adult stem cells.
• ALDH activity is linked to critical cellular processes like drug resistance, differentiation, and oxidative stress response.
• Recent research highlights ALDH activity as a marker for cancer stem cells (CSCs).

Purpose of the Study:

• To review the significance of ALDH activity in normal and malignant stem cell functions.
• To explore the diagnostic and therapeutic implications of ALDH activity.
• To examine tools for modulating ALDH activity for potential cancer therapies.

Main Methods:

• Literature review of studies on ALDH activity in stem cells.
• Analysis of flow cytometry-based assays for ALDH activity detection.
• Evaluation of therapeutic strategies targeting ALDH in CSCs.

Main Results:

• High ALDH activity is a characteristic of both normal and cancer stem cells.
• ALDH activity plays a role in stem cell maintenance and tumor progression.
• Flow cytometry enables efficient purification of cells with high ALDH activity.

Conclusions:

• ALDH activity is a vital marker and functional component of stem cells, including CSCs.
• Targeting ALDH presents a promising avenue for cancer therapy, particularly against CSCs.
• Further research is essential to develop effective therapeutic strategies that inhibit ALDH activity.