4.6 Review

Nanog, as a key cancer stem cell marker in tumor progression

Journal

GENE
Volume 827, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.gene.2022.146448

Keywords

Cancer stem cells; Nanog; Tumor progression; Tumor Marker

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Cancer stem cells (CSCs) play a crucial role in tumor initiation and development, as well as in chemoresistance and metastasis. Nanog, a cell surface marker, is upregulated in various cancers and contributes to the stemness, self-renewal, metastasis, invasiveness, and chemoresistance of cancer cells. The function of Nanog in multiple cancers is of significant importance for cancer treatment.
Cancer stem cells (CSCs) are a small population of malignant cells that induce tumor onset and development. CSCs share similar features with normal stem cells in the case of self-renewal and differentiation. They also contribute to chemoresistance and metastasis of cancer cells, leading to therapeutic failure. To identify CSCs, multiple cell surface markers have been characterized, including Nanog, which is found at high levels in different cancers. Recent studies have revealed that Nanog upregulation has a substantial association with the advanced stages and poor prognosis of malignancies, playing a pivotal role through tumorigenesis of multiple human cancers, including leukemia, liver, colorectal, prostate, ovarian, lung, head and neck, brain, pancreatic, gastric and breast cancers. Nanog through different signaling pathways, like JAK/STAT and Wnt/beta-catenin pathways, induces stemness, self-renewal, metastasis, invasiveness, and chemoresistance of cancer cells. Some of these signaling pathways are common in various types of cancers, but some have been found in one or two cancers. Therefore, this review aimed to focus on the function of Nanog in multiple cancers based on recent studies surveying the suitable approaches to target Nanog and inhibit CSCs residing in tumors to gain favorable results from cancer treatments.

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