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KMID : 0043320190420080658
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Archives of Pharmacal Research
2019 Volume.42 No. 8 p.658 ~ p.671
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Apoptotic cell clearance in the tumor microenvironment: a potential cancer therapeutic target
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Shin Seong-Ah
Moon Sun-Young
Park Dae-Ho
Park Jong-Bae
Lee Chang-Sup
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Abstract
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Millions of cells in the human body undergo apoptosis not only under normal physiological conditions but also under pathological conditions such as infection or other diseases related to acute tissue injury. Swift apoptotic cell clearance is essential for tissue homeostasis. Defective clearance of dead cells is linked to pathogenesis of diseases such as inflammatory diseases, atherosclerosis, neurological disease, and cancer. Significance of apoptotic cell clearance has been emerging as an interesting field for disease treatment. Efficient apoptotic cell clearance plays an important role in reducing inflammation through the suppression of inappropriate inflammatory responses under healthy and diseased conditions. However, apoptotic cell clearance related to cancer pathogenesis is more complex in tumor microenvironments. Chronic inflammation resulting from the failure of apoptotic cell clearance can contribute to tumor progression. Conversely, tumor cells can exploit the anti-inflammatory effect of apoptotic cell clearance to generate an immunosuppressive tumor microenvironment. In this review, focus is on the current understanding of apoptotic cell clearance in the tumor microenvironment. Furthermore, we discuss how signaling molecules (PtdSer and PtdSer recognition receptor) mediating apoptotic cell clearance are aberrantly expressed in the tumor microenvironment and their current development state as potential therapeutic targets for clinical cancer therapy.
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KEYWORD
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Apoptotic cell clearance, Tumor microenvironment, Phosphatidylserine, Phosphatidylserine recognition receptor
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