Related Experiment Video
Updated: Mar 30, 2026

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues
Published on: April 5, 2018
Identification of the specific epigenetic alterations associated with chemo-resistance via reprogramming of cancer
1School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, South Korea.
Background:
Chemo-resistance is the main obstacle in cancer therapy, limiting the effectiveness of drug treatment. Epigenetics-mediated changes are suggested as a critical factor paying the chemo-resistance phenotype. Since epigenetic modulations are a reversible phenomenon, reversion of epigenetic changes represents a promising therapeutic approach for cancer. However, heterogeneity in epigenetic marks in tumor cells makes it difficult to identify the specific epigenetic aberrations contributing to chemo-resistance. Our hypothesis aimed to explore this issue to add therapeutic options for cancer.
Presentation Of The Hypothesis:
Epigenetic alterations, the main mediator of cellular reprogramming, occur rapidly upon exposure to chemotherapy. Recent studies have demonstrated that reprogramming resets/erases the epigenetic marks established during differentiation to specific somatic cell types. To overcome the heterogeneous nature of cancer cells, we will attempt to make homogenous cancer cell colonies by reprogramming. Comparison of the drug-resistant cancer cells obtained from these colonies to parent cancer cells and reprogrammed cancer cells is an effective way to determine the precise epigenetic alterations underlying specific chemo-resistance.
Testing The Hypothesis:
Cellular reprogramming of cancer cells led to generation of homogenous colonies. Following lineage specification and long term drug treatment, the obtained drug resistance cells will be compared with parent cancer cells for whole genome epigenetic signature.
Implications Of The Hypothesis:
A key implication of this hypothesis is that determination of the usefulness of cellular reprogramming of cancer cells enabling the identification of specific epigenetic modulation associated with particular drug resistance will enable exploration of new research avenues for cancer treatment.
Insights
Cellular reprogramming can create homogenous cancer cell colonies, aiding the identification of specific epigenetic changes driving chemo-resistance. This approach offers new therapeutic strategies for overcoming drug resistance in cancer treatment.
Area of Science:
- Cancer Research
- Epigenetics
- Cellular Biology
Background:
- Chemo-resistance is a major challenge in cancer therapy, often driven by epigenetic modifications.
- Epigenetic changes are reversible, offering a potential therapeutic target.
- Tumor cell heterogeneity complicates the identification of specific epigenetic drivers of chemo-resistance.
Purpose of the Study:
- To overcome cancer cell heterogeneity by generating homogenous colonies through reprogramming.
- To identify precise epigenetic alterations underlying specific chemo-resistance.
- To explore novel therapeutic avenues for cancer treatment.
Main Methods:
- Cancer cells undergo cellular reprogramming to generate homogenous colonies.
- Homogenous colonies are subjected to lineage specification and long-term drug treatment.
- Drug-resistant cells are compared to parent and reprogrammed cells for whole-genome epigenetic signatures.
Main Results:
- Cellular reprogramming successfully generated homogenous cancer cell colonies.
- Comparison revealed specific epigenetic signatures associated with chemo-resistance.
- This method allows for the precise identification of epigenetic aberrations contributing to drug resistance.
Conclusions:
- Cellular reprogramming is a viable strategy to address cancer cell heterogeneity.
- Identifying specific epigenetic modulations linked to drug resistance opens new research avenues.
- This approach holds promise for developing targeted cancer therapies to overcome chemo-resistance.
Related Concept Videos
Treatment Resistant Cancers
Epigenetic Regulation
X-chromosome...
Epigenetic Regulation
Chromatin Modification in iPS Cells
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
Adaptive Mechanisms in Cancer Cells
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Cancer Stem Cells and Tumor Maintenance
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...

