Tumor suppressor function of Rab25 in triple-negative breast cancer

Ji Ming Cheng, Lisa Volk, Deepak Kumar Mummidavarapu Janaki, Sudhir Vyakaranam, Sophia Ran, Krishna A. Rao

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Rab proteins are a group of ubiquitously expressed proteins that are responsible for intracellular transport of vesicles. Recent evidence has shown that certain Rab proteins are involved in the pathogenesis of cancer. We have recently shown that Rab25 is lost in a large fraction of breast cancer samples, particularly those derived from hormonally insensitive tumors. We have further investigated the role of Rab25 by re-expressing Rab25 in tumorigenic cell lines and measuring the impact on tumor formation as well as on various molecular pathways through PCR array analysis. In vivo tumor growth of cell lines with re-expressed Rab25 was markedly suppressed. Our data suggest that Rab25 acts through multiple pathways to enhance apoptosis and to suppress angiogenesis and invasion by modulating VEGF-A and VEGFR-1 expression. These findings suggest that Rab25 represents a novel class of cellular modulators that can influence both tumor initiation and the progression of the established tumors, thus ultimately affecting the biology of the malignant disease.

Original languageEnglish
Pages (from-to)2799-2812
Number of pages14
JournalInternational Journal of Cancer
Volume126
Issue number12
DOIs
StatePublished - Jun 15 2010
Externally publishedYes

Fingerprint

Triple Negative Breast Neoplasms
Neoplasms
Vascular Endothelial Growth Factor Receptor-1
Transport Vesicles
Proteins
Tumor Cell Line
Vascular Endothelial Growth Factor A
Apoptosis
Breast Neoplasms
Cell Line
Polymerase Chain Reaction
Growth

Keywords

  • Apoptosis
  • Mammary neoplasia
  • p21 RAS
  • Rab25
  • Tumorigenesis

ASJC Scopus subject areas

  • Cancer Research
  • Oncology
  • Medicine(all)

Cite this

Cheng, J. M., Volk, L., Janaki, D. K. M., Vyakaranam, S., Ran, S., & Rao, K. A. (2010). Tumor suppressor function of Rab25 in triple-negative breast cancer. International Journal of Cancer, 126(12), 2799-2812. https://doi.org/10.1002/ijc.24900

Tumor suppressor function of Rab25 in triple-negative breast cancer. / Cheng, Ji Ming; Volk, Lisa; Janaki, Deepak Kumar Mummidavarapu; Vyakaranam, Sudhir; Ran, Sophia; Rao, Krishna A.

In: International Journal of Cancer, Vol. 126, No. 12, 15.06.2010, p. 2799-2812.

Research output: Contribution to journalArticle

Cheng, JM, Volk, L, Janaki, DKM, Vyakaranam, S, Ran, S & Rao, KA 2010, 'Tumor suppressor function of Rab25 in triple-negative breast cancer', International Journal of Cancer, vol. 126, no. 12, pp. 2799-2812. https://doi.org/10.1002/ijc.24900
Cheng JM, Volk L, Janaki DKM, Vyakaranam S, Ran S, Rao KA. Tumor suppressor function of Rab25 in triple-negative breast cancer. International Journal of Cancer. 2010 Jun 15;126(12):2799-2812. https://doi.org/10.1002/ijc.24900
Cheng, Ji Ming ; Volk, Lisa ; Janaki, Deepak Kumar Mummidavarapu ; Vyakaranam, Sudhir ; Ran, Sophia ; Rao, Krishna A. / Tumor suppressor function of Rab25 in triple-negative breast cancer. In: International Journal of Cancer. 2010 ; Vol. 126, No. 12. pp. 2799-2812.
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