Researchers at the Hebrew University of Jerusalem and other institutions have identified two distinguishable groups of genes: those that produce very abundant biochemical products in the cell and function properly in the majority of biological processes, and a flexible subset that might have abnormal function in a disease.
They demonstrated that these two groups can be found among various organisms and cell types, including stem cells and cancer cells.
One set of genes is a robust network that conducts the basic functions of all cells, such as producing energy and biochemical building blocks. This group represents the “hard core” of different organisms.
The biochemical products produced by the other group of genes are less abundant in organisms, and their amount might vary significantly between different types of normal and diseased cells and even between different cancer cells derived from patients with the same type of cancer.
This dramatic variation between patients with the same disease has clear implications for personalized medicine. It implies that detailed analysis of each patient will be required in order to determine the exact type of patient-oriented therapy needed.The work on defining the two gene sets was described in a recent article in the Proceedings of the National Academy of Sciences in the US. The authors were Dr.Nataly Kravchenko-Balasha, a former graduate student at the Silberman Institute of life sciences at the Hebrew University and currently a post-doctoral fellow at the California Institute of Technology in Pasadena; Prof.Alexander Levitzki, who was Kravchenko-Balahsha’s Ph.D. advisor; Prof. Raphael D. Levine from the Fritz Haber Research Institute for Molecular Dynamics at the Hebrew University; and colleagues from three other institutes: Prof.Varda Rotter (Weizmann Institute of Science), Prof. Francoise Remacle (Université de Liège), and Dr. Andrew Goldstein (University of California, Los Angeles); plus Dr. Ayelet Gross (the Hebrew University).
Jerry Barach | Hebrew University
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