Abstract While genetic changes are critical for the malignant transformation of epithelial cells, the microenvironment in which the cells reside also governs carcinogenesis. Most tumors arise within a cellular microenvironment characterized by suppressed host immunity, dysregulated inflammation, and increased production of cellular growth and survival factors that induce angiogenesis and inhibi...

Background: Tumor microenvironment is an active factor participating in immunoregulation, thereby preventing immunosurveillance and limiting the efficacy of anticancer therapies. Hypoxia as a major characteristic of solid tumors causes the expression of Hypoxia-Inducible Factor-1α (HIF-1α). This is a transcription factor that mediates hypoxic responses of tumor cells and involves in the express...

INTRODUCTION: Triple negative cancer is one of the most aggressive subtypes breast cancer. Currently, no effective treatment methods have been proposed that would significantly affect long-term results treatment. OBJECTIVE: To summarize possibilities theranostics and nanteranostics in visualization elimination malignant cells immunosuppressive microenvironment thriple MATERIALS AND METHODS: A s...

Tumor occurrence, progression and metastasis depend on the crosstalk between tumor cells and stromal cells and on extrinsic factors outside the tumor microenvironment. Exosomal microRNA (miRNA) not only is involved in communications within the tumor microenvironment but also mediates communications between the extrinsic environment and tumor microenvironment. However, most reviews have been lim...

In addition to malignant cells, the tumor microenvironment also includes nonmalignant cells, secreted proteins, and blood vessels that surround and support the growth of the tumor. Interactions between the various components of the tumor microenvironment are significant; tumor cells can change the nature of the microenvironment, and conversely, the microenvironment can affect how a tumor grows ...

The presence of stem cells in leukemia and solid tumors has been demonstrated in recent decades. Cancer stem cells have the potency of tumorigenesis; furthermore, they have the ability of self-renewing and differentiation like other stem cells. They also play important role in the process of tumor invasion and metastasis. Several studies have been performed to discover the spe...