Single genome analysis of normal cells identifies the early steps of kidney cancer.
Whole genome analyses have shown that every cell of the body accumulates thousands of genetic changes during a lifetime, with implications for cancer initiation. We have analyzed normal kidney cells from both healthy individuals and patients with the Von Hippel Lindau (VHL) syndrome, which predisposes to kidney cancer. Using a clonal-expansion method that enables the collection of high confidence…
Whole genome analyses reveal that all cells of the human body accumulate thousands of genetic alterations over a lifetime, potentially leading to cancer development. Scientists have conducted a study on normal kidney cells from healthy individuals and those with Von Hippel Lindau (VHL) syndrome, a genetic disorder that increases the risk of kidney cancer.
By employing a clonal-expansion method, researchers were able to gather precise genetic and gene expression data from identical cells, thereby defining a novel mutational signature linked to a particular group of damage-activated proximal tubule cells, as well as 96% of clear cell renal cell carcinomas.
The mutated process primarily affects highly transcribed DNA and may contribute to the emergence of cancer-related variants in the VHL gene. Research findings from normal cells, corroborated by laboratory experiments, suggest that oxygen deficiency plays a pivotal role in causing mutations and triggering cancer initiation. Ultimately, the study establishes a connection between hypoxia, a common internal stressor in normal renal tissue, and its potential role in the onset of cancer.
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