Stem Cell Reviews and Reports

, Volume 7, Issue 2, pp 292–306

The Role of Human Aldehyde Dehydrogenase in Normal and Cancer Stem Cells

Article

DOI: 10.1007/s12015-010-9208-4

Cite this article as:
Ma, I. & Allan, A.L. Stem Cell Rev and Rep (2011) 7: 292. doi:10.1007/s12015-010-9208-4

Abstract

Normal stem cells and cancer stem cells (CSCs) share similar properties, in that both have the capacity to self-renew and differentiate into multiple cell types. In both the normal stem cell and cancer stem cell fields, there has been a great need for a universal marker that can effectively identify and isolate these rare populations of cells in order to characterize them and use this information for research and therapeutic purposes. Currently, it would appear that certain isoenzymes of the aldehyde dehydrogenase (ALDH) superfamily may be able to fulfill this role as a marker for both normal and cancer stem cells. ALDH has been identified as an important enzyme in the protection of normal hematopoietic stem cells, and is now also widely used as a marker to identify and isolate various types of normal stem cells and CSCs. In addition, emerging evidence suggests that ALDH1 is not only a marker for stem cells, but may also play important functional roles related to self-protection, differentiation, and expansion. This comprehensive review discusses the role that ALDH plays in normal stem cells and CSCs, with focus on ALDH1 and ALDH3A1. Discrepancies in the functional themes between cell types and future perspectives for therapeutic applications will also be discussed.

Keywords

Aldehyde dehydrogenase (ALDH)Stem cellsCancer stem cells (CSCs)Retinoic acid (RA) signalingAll-trans retinoic acid (ATRA)Self-protectionDifferentiationExpansion

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of Anatomy and Cell Biology, Schulich School of Medicine and DentistryUniversity of Western OntarioLondonCanada
  2. 2.Department of Oncology, Schulich School of Medicine and DentistryUniversity of Western OntarioLondonCanada
  3. 3.London Regional Cancer ProgramLondon Health Sciences CentreLondonCanada