Open Access

Expression of microphthalmia transcription factor, S100 protein, and HMB-45 in malignant melanoma and pigmented nevi

  • Authors:
    • Jianxin Xia
    • Yanlong Wang
    • Fuqiu Li
    • Jinfeng Wang
    • Yan Mu
    • Xianglin Mei
    • Xue Li
    • Wenjing Zhu
    • Xianhua Jin
    • Kai Yu
  • View Affiliations

  • Published online on: August 1, 2016     https://doi.org/10.3892/br.2016.732
  • Pages: 327-331
  • Copyright: © Xia et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Malignant melanoma (MM) is a type of malignant tumor, which originates from neural crest melanocytes. MM progresses rapidly and results in a high mortality rate. The present study aims to investigate the expression of microphthalmia transcription factor (MITF), the S100 protein, and HMB-45 in MM and pigmented nevi. A total of 32 MM samples (including three skin metastasis, three lymph node metastasis and two spindle cell MM samples), two Spitz nevus samples, four pigmented nevus samples and two blue nevus samples were collected. The expression levels of S100 protein, HMB-45, and MITF were observed via immunostaining. The S100 protein exhibited high positive rates in MM and pigment disorders (96.7 and 100%, respectively), but with low specificity. The S100 protein was also expressed in fibroblasts, myoepithelial cells, histocytes and Langerhans cells in normal skin samples. HMB-45 had high specificity. Its positive expression was only confined to MM cells and junctional nevus cells. Furthermore, HMB-45 was not expressed in melanocytes in the normal tissue samples around the tumor or in the benign intradermal nevus cells. MITF exhibited high specificity and high sensitivity. It was expressed in the nuclei of melanocytes, MM cells and nevus cells. It was observed to be strongly expressed in metastatic MM and spindle cell MMs. Thus, MITF may present as a specific immunomarker for the diagnosis and differential diagnosis of MM.
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September-2016
Volume 5 Issue 3

Print ISSN: 2049-9434
Online ISSN:2049-9442

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Spandidos Publications style
Xia J, Wang Y, Li F, Wang J, Mu Y, Mei X, Li X, Zhu W, Jin X, Yu K, Yu K, et al: Expression of microphthalmia transcription factor, S100 protein, and HMB-45 in malignant melanoma and pigmented nevi. Biomed Rep 5: 327-331, 2016
APA
Xia, J., Wang, Y., Li, F., Wang, J., Mu, Y., Mei, X. ... Yu, K. (2016). Expression of microphthalmia transcription factor, S100 protein, and HMB-45 in malignant melanoma and pigmented nevi. Biomedical Reports, 5, 327-331. https://doi.org/10.3892/br.2016.732
MLA
Xia, J., Wang, Y., Li, F., Wang, J., Mu, Y., Mei, X., Li, X., Zhu, W., Jin, X., Yu, K."Expression of microphthalmia transcription factor, S100 protein, and HMB-45 in malignant melanoma and pigmented nevi". Biomedical Reports 5.3 (2016): 327-331.
Chicago
Xia, J., Wang, Y., Li, F., Wang, J., Mu, Y., Mei, X., Li, X., Zhu, W., Jin, X., Yu, K."Expression of microphthalmia transcription factor, S100 protein, and HMB-45 in malignant melanoma and pigmented nevi". Biomedical Reports 5, no. 3 (2016): 327-331. https://doi.org/10.3892/br.2016.732