Disulfidptosis-related gene expression reflects the prognosis of drug-resistant cancer patients and inhibition of MYH9 reverses sorafenib resistance
View abstract on PubMed
Summary
This summary is machine-generated.Disulfidptosis, a new cell death pathway, involves disulfide buildup. This study links its genes to poor liver cancer survival and sorafenib resistance, highlighting MYH9 as a key factor in overcoming drug resistance.
Area Of Science
- Oncology
- Cell Biology
- Molecular Medicine
Background
- Drug resistance significantly worsens outcomes for advanced cancer patients.
- Disulfidptosis is a newly identified cell death modality triggered by excessive disulfide formation.
- Fifteen essential genes have been previously linked to disulfidptosis.
Purpose Of The Study
- To investigate the molecular and clinical significance of disulfidptosis-related genes across various cancers.
- To explore the association between disulfidptosis gene expression and patient survival.
- To determine the role of disulfidptosis-related genes in drug resistance, specifically sorafenib resistance.
Main Methods
- Utilized pan-cancer mRNA expression data from Xena for gene expression analysis.
- Employed unsupervised clustering to identify patient clusters based on disulfidptosis gene expression.
- Performed Kaplan-Meier survival analysis and analyzed drug sensitivity data from the GDSC database.
Main Results
- High expression of disulfidptosis-related genes correlated with poorer overall survival in liver cancer.
- Twelve disulfidptosis-related genes were found to influence sorafenib resistance.
- MYH9 was identified as a critical gene affecting both disulfidptosis and sorafenib resistance.
Conclusions
- Disulfidptosis-related genes have significant prognostic and predictive value in cancer.
- MYH9 plays a crucial role in mitigating sorafenib resistance in hepatocellular carcinoma via disulfidptosis-like mechanisms.
- Targeting disulfidptosis presents a novel therapeutic strategy to enhance anti-cancer drug sensitivity.
Related Concept Videos
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...

