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An experimental workflow for investigating anoikis resistance in cancer metastasis
Xue Han1, Yipan Zheng1, Xiaohui Si1
1Zhejiang Key Laboratory of Medical Epigenetics, School of Medicine, Hangzhou Normal University, Hangzhou 311121, China.
Background:
Anoikis is a form of programmed cell death triggered by the detachment of cells from the extracellular matrix. Anoikis resistance represents a critical factor in tumor metastasis, and elucidating the mechanisms by which epithelial cancer cells evade this process may provide a molecular insight for effectively targeting metastatic progression.
Methods:
Presented here are an experimental workflow and a detailed protocol to examine anoikis sensitivity in tumor cells both in vitro and in vivo. We described a detachment-induced anoikis model, a three-dimensional spheroid culture system, and an in vivo circulating tumor cell assay, by using the human lung carcinoma cell line A549 as a model system. We detailed the cell culture conditions, materials, and sample preparation, and the evaluation and quantification of anoikis. Together, these methods provide a comprehensive approach for investigating anoikis resistance.
Conclusion:
This protocol offers valuable insights into the mechanisms underlying anoikis resistance and may facilitate the identification of novel therapeutic targets for cancer treatment.
Insights
This study details methods to investigate anoikis resistance, a key factor in cancer metastasis. Understanding how cancer cells evade anoikis (programmed cell death) can reveal new therapeutic targets.
Area of Science:
- Cell Biology
- Cancer Research
- Molecular Biology
Background:
- Anoikis is programmed cell death upon cell detachment from the extracellular matrix.
- Anoikis resistance is crucial for tumor metastasis.
- Understanding evasion mechanisms can target metastatic progression.
Purpose of the Study:
- To present a protocol for examining anoikis sensitivity in tumor cells.
- To provide methods for investigating anoikis resistance in cancer.
Main Methods:
- Developed a detachment-induced anoikis model.
- Utilized a three-dimensional spheroid culture system.
- Established an in vivo circulating tumor cell assay using A549 lung carcinoma cells.
Main Results:
- Detailed cell culture, materials, and sample preparation for anoikis evaluation.
- Provided methods for quantifying anoikis.
- Established a comprehensive approach for investigating anoikis resistance.
Conclusions:
- The protocol offers insights into anoikis resistance mechanisms.
- Facilitates identification of novel therapeutic targets for cancer treatment.
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