HERV-K activation is strictly required to sustain CD133+ melanoma cells with stemness features

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HERV-K activation is strictly required to sustain CD133+ melanoma cells with stemness features

BACKGROUND Melanoma is a heterogeneous tumor in which phenotype-switching and CD133 marker have been associated with metastasis promotion and chemotherapy resistance. CD133 positive (CD133+) subpopulation has also been suggested as putative cancer stem cell (CSC) of melanoma tumor. Human endogenous retrovirus type K (HERV-K) has been described to be aberrantly activated during melanoma progress...

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Genetic Engineering of T Cells to Target HERV-K, an Ancient Retrovirus on Melanoma.

PURPOSE The human endogenous retrovirus (HERV-K) envelope (env) protein is a tumor-associated antigen (TAA) expressed on melanoma but not normal cells. This study was designed to engineer a chimeric antigen receptor (CAR) on T-cell surface, such that they target tumors in advanced stages of melanoma. EXPERIMENTAL DESIGN Expression of HERV-K protein was analyzed in 220 melanoma samples (with v...

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Effective activity of cytokine-induced killer cells against autologous metastatic melanoma including cells with stemness features.

PURPOSE We investigate the unknown tumor-killing activity of cytokine-induced killer (CIK) cells against autologous metastatic melanoma and the elusive subset of putative cancer stem cells (mCSC). EXPERIMENTAL DESIGN We developed a preclinical autologous model using same patient-generated CIK cells and tumor targets to consider the unique biology of each patient/tumor pairing. In primary tumo...

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Activation of HERV-K Env protein is essential for tumorigenesis and metastasis of breast cancer cells

Human endogenous retrovirus type K (HERV-K) Env protein was previously demonstrated to be overexpressed in human breast cancer (BC) cells and tissues. However, the molecular pathways driving the specific alterations are unknown. We now show that knockdown of its expression with an shRNA (shRNAenv) blocked BC cell proliferation, migration, and invasion. shRNAenv transduction also attenuated the ...

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بررسی بیان شاخص‌های سطحی CD133، CD44 و ABCG2 در رده‌های سلولی ملانوما و ارتباط آنها با سلول‌های بنیادی سرطان

 Background and Objective: Melanoma is the most deadly type of skin cancer that has a high potency and rapid metastasis to other organs. It appears that cancer stem cells (CSCs) are responsible for invasion and metastasis. The aim of this study was to investigate the expression of cancer stem cells candidate markers and their association with stemness features in mel...

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ژورنال

عنوان ژورنال: Journal of Experimental & Clinical Cancer Research

سال: 2017

ISSN: 1756-9966

DOI: 10.1186/s13046-016-0485-x