Manumycin A from a new Streptomyces strain induces endoplasmic reticulum stress-mediated cell death through specificity protein 1 signaling in human oral squamous cell carcinoma

  • Authors:
    • Jung Jae Cho
    • Jung-Il Chae
    • Ka Hwi Kim
    • Jin Hyoung Cho
    • Young-Joo Jeon
    • Ha Na Oh
    • Goo Yoon
    • Do Young Yoon
    • Young Sik Cho
    • Seung-Sik Cho
    • Jung-Hyun Shim
  • View Affiliations

  • Published online on: September 8, 2015     https://doi.org/10.3892/ijo.2015.3151
  • Pages: 1954-1962
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Abstract

Manumycin A (Manu A) is a natural antibiotic produced by new Streptomyces strain, exhibiting antitumor and anticancer effects. However, the anticancer effects of Manu A on oral squamous cell carcinoma (OSCC) have not been reported. OSCC is an aggressive type of cancer because of its poor prognosis and low survival rate despite advanced medical treatment. We observed that Manu A reduced cell growth and Sp1 protein levels in OSCC cell lines (HN22 and HSC4) in a dose- and time-dependent manner. We also observed downregulation of Sp1 downstream target genes such as p27, p21, Mcl-1 and survivin. Moreover, nuclear staining with DAPI showed that Manu A was able to cause nuclear condensation and further fragmentation. Flow cytometry analyses using Annexin V and propiodium iodide supported Manu A-mediated apoptotic cell death of OSCC cells. Furthermore, Bcl-2 family such as mitochondrial pro‑apoptotic Bax, anti-apoptotic Bcl-xl and Bid were regulated by Manu A, triggering the mitochondrial apoptotic pathway. In conclusion, these results indicate that Manu A is a potential to treat human OSCC via cell apoptosis through the downregulation of Sp1.
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November-2015
Volume 47 Issue 5

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Cho JJ, Chae J, Kim KH, Cho JH, Jeon Y, Oh HN, Yoon G, Yoon DY, Cho YS, Cho S, Cho S, et al: Manumycin A from a new Streptomyces strain induces endoplasmic reticulum stress-mediated cell death through specificity protein 1 signaling in human oral squamous cell carcinoma. Int J Oncol 47: 1954-1962, 2015.
APA
Cho, J.J., Chae, J., Kim, K.H., Cho, J.H., Jeon, Y., Oh, H.N. ... Shim, J. (2015). Manumycin A from a new Streptomyces strain induces endoplasmic reticulum stress-mediated cell death through specificity protein 1 signaling in human oral squamous cell carcinoma. International Journal of Oncology, 47, 1954-1962. https://doi.org/10.3892/ijo.2015.3151
MLA
Cho, J. J., Chae, J., Kim, K. H., Cho, J. H., Jeon, Y., Oh, H. N., Yoon, G., Yoon, D. Y., Cho, Y. S., Cho, S., Shim, J."Manumycin A from a new Streptomyces strain induces endoplasmic reticulum stress-mediated cell death through specificity protein 1 signaling in human oral squamous cell carcinoma". International Journal of Oncology 47.5 (2015): 1954-1962.
Chicago
Cho, J. J., Chae, J., Kim, K. H., Cho, J. H., Jeon, Y., Oh, H. N., Yoon, G., Yoon, D. Y., Cho, Y. S., Cho, S., Shim, J."Manumycin A from a new Streptomyces strain induces endoplasmic reticulum stress-mediated cell death through specificity protein 1 signaling in human oral squamous cell carcinoma". International Journal of Oncology 47, no. 5 (2015): 1954-1962. https://doi.org/10.3892/ijo.2015.3151