Immuno-expression of human melanoma stem cell markers in tissues at different stages of the disease

The Journal of Surgical Research
Bhuvnesh K SharmaE George Elias

Abstract

Human cutaneous melanoma can be one of the most aggressive tumors and is extremely resistant to all current therapeutic modalities. Immunohistochemistry (IHC) studies were undertaken to assess independent relative frequency on preferential overexpression and simultaneous expression of four stem cell markers; CD133+, ABCB5+, CD166, and Nestin, at different stages of the disease. Five-micron sections from paraffin blocks from primary melanoma, lymph node (LN) metastases, distant metastases, benign nevi from non-melanoma patients (NMP), and patients with past history of melanoma (MP) were IHC stained with monoclonal antibodies (mAb) to the four stem cell markers. Overexpression of CD133+ was noted in tissues from LN and distant metastases compared to benign nevi (P < 0.0022, P < 0.013, respectively). Overexpression of ABCB5+ was observed comparing primary melanoma, LN, and distant metastases to benign nevi from NMP (P < 0.0063, P < 0.001, P < 0.00058, respectively). Significant overexpression of ABCB5+ was noted in tissues from LN and distant metastases compared with benign nevi from MP (P < 0.0003, P < 0.0068). None of the benign nevi of NMP demonstrated ABCB5+. This study clearly shows the existence of a distinct hyperpolarized ...Continue Reading

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Citations

May 5, 2012·Modern Pathology : an Official Journal of the United States and Canadian Academy of Pathology, Inc·Namrata SetiaMeera Mahalingam
Jan 8, 2011·Cancer Research·Natasha Y FrankMarkus H Frank
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Mar 6, 2021·Frontiers in Molecular Biosciences·Xiaoran WangZhichong Wang
Dec 12, 2018·The Journal of Investigative Dermatology·Kathleen ConwayNancy E Thomas

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