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RAB39A: a Rab small GTPase with a prominent role in cancer stemness

Tokuhiro Chano1, Sofia Avnet2

  • 1Department of Clinical Laboratory Medicine, Shiga University of Medical Science, Seta, Otsu, Shiga 520-2192, Japan.

Journal of Biochemistry
|April 13, 2018
PubMed

Insights

Rab small GTPase RAB39A promotes cancer stemness and tumorigenesis by modulating key cellular pathways. Its activity and location in cancer cells are influenced by the tumor microenvironment.

Area of Science:

  • Cellular Biology
  • Molecular Oncology
  • Cancer Research

Background:

  • RAB39A is a Rab small GTPase involved in intracellular membrane trafficking.
  • It regulates pathways like neuronal differentiation, autophagy, Hippo, and Notch signaling.
  • RAB39A's role in cancer biology was previously uncharacterized.

Purpose of the Study:

  • To review the current understanding of RAB39A's oncogenic function.
  • To summarize how microenvironments affect RAB39A in cancer cells.

Main Methods:

  • Literature review of RAB39A's role in cellular pathways and cancer.
  • Analysis of RAB39A's interactions with RXRB, NCOR, and HDAC.
  • Discussion of microenvironmental influences on RAB39A.

Main Results:

  • RAB39A promotes cancer stemness and tumorigenesis.
  • It forms molecular complexes with RXRB, NCOR, and HDAC, maintaining oncogenic pathways.
  • Microenvironmental factors modulate RAB39A activity and localization.

Conclusions:

  • RAB39A plays a significant role in cancer progression and stemness.
  • Understanding RAB39A's regulation by the microenvironment is crucial for cancer therapy.

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