Tumor-associated macrophages (TAMs) are a significant component of the microenvironment of any solid tumors in the majority of cancers, associated with unfavorable prognosis. TAMs emerge as attractive targets for therapeutic strategies aimed at reprogramming their protumor phenotype into an effective antitumor activity.In this review article, we present an overview of mechanisms responsible for TAMs recruitment and highlight the roles of TAMs in the regulation of tumor angiogenesis, invasion, metastasis, immunosuppression, and chemotherapeutic resistance. We describe the interplay between Th17 cells and other immune cells in the tumor microenvironment, and we assess both the potential antitumorigenic and pro-tumorigenic activities of Th17 cells and their associated cytokines. Understanding the nature of Th17 cell responses in the tumor microenvironment will be important for the design of more efficacious cancer immunotherapies. Finally, we discuss TAM-targeting therapy as a promising novel strategy for an indirect cancer therapy.
CRISPR Cas9 is highly advanced genome editing technology extensively used for the modifications of genetic components in various sectors of living organisms. This technology has been adapted from the prokaryotic immune system, where it plays a vital role in protecting bacteria and archaea from virus attacks. This robust technology has currently been proven efficient in selective and precise editing, the genome of different living organisms for different purposes ranging from therapeutic, diagnostic to programmable gene regulation. This technology has been continuously upgraded, enhancing its performance thus reducing unfavorable outcomes. Customizing this technology is not a piece of cake. Hundreds of thousands of experiments have been conducted all around the world to optimize this highly intellectual technology to make it an error prone programmable technology to serve each and every living kind. In this review, we have summarized the modifications that have been made in different components of CRISPR cas9 system, engineering of CRISPR Cas9 for specific purposes, different external factors that has to be considered to obtain the best possible outcome minimizing the hazards.
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