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Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
Published on: August 25, 2021
Toll-like receptors expressed in tumor cells: targets for therapy
1Department of Histopathology, The First Affiliated Hospital, Sun Yat-sen (Zhongshan) University, Guangzhou 510080, People's Republic of China. liyuuk@yahoo.co.uk
Abstract:
Toll-like receptors (TLRs), mainly expressing in human immune related cells and epithelial cells, play an essential role in the host defense against microbes by recognizing conserved bacterial molecules. Recently, the expression or up-regulation of TLRs has been detected in many tumor cell lines or tumors, especially epithelial derived cancers. Although the TLR profile varies on different tumor cells, the current evidences indicate that the expression of TLRs is functionally associated with tumor progression. TLR expression may promote malignant transformation of epithelial cells. Engagement of TLRs increases tumor growth and tumor immune escape, and induces apoptosis resistance and chemoresistance in some tumor cells. These findings demonstrate that TLR is a promising target for the development of anticancer drugs and make TLR agonists or antagonists the potential agents for tumor therapy.
Insights
Toll-like receptors (TLRs) are crucial for immune defense and are increasingly found in cancers. Their expression correlates with tumor progression, immune escape, and resistance to therapies, highlighting TLRs as potential anticancer targets.
Area of Science:
- Immunology
- Oncology
- Molecular Biology
Background:
- Toll-like receptors (TLRs) are key components of the innate immune system, recognizing microbial molecules.
- Recent studies show TLR expression or upregulation in various tumor cells, particularly epithelial cancers.
Purpose of the Study:
- To investigate the role of Toll-like receptors (TLRs) in cancer progression and their potential as therapeutic targets.
Main Methods:
- Analysis of TLR expression in tumor cell lines and clinical tumor samples.
- Functional assays to assess the impact of TLR engagement on tumor cell behavior.
Main Results:
- TLR expression is associated with tumor progression and malignant transformation in epithelial cells.
- Engagement of TLRs enhances tumor growth, promotes immune escape, and confers resistance to apoptosis and chemotherapy.
Conclusions:
- Toll-like receptors (TLRs) play a significant role in cancer development and progression.
- TLRs represent a promising target for novel anticancer drug development, with agonists or antagonists as potential therapeutic agents.
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