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Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
Published on: August 25, 2021
Targets of oncogenes and tumor suppressors: key for understanding basic mechanisms of carcinogenesis
1Institute of Carcinogenesis, Blokhin Russian Cancer Research Center, Russian Academy of Medical Sciences, Moscow, 115478, Russia. kopnin@imb.ac.ru
Abstract:
Changes in expression of protooncogenes and tumor suppressor genes play a key role in oncogenesis. Dysfunction of their protein products leads to abnormal regulation of signaling pathways, which control the cell cycle, apoptosis, genetic stability, cell differentiation, and morphogenetic reactions. Changes in these important physiological processes are obviously responsible both for initial steps of neoplastic cell transformation and for determination of subsequent tumor progression resulting in the development of malignant tumors.
Insights
Protooncogene and tumor suppressor gene expression changes drive cancer development. Their protein dysfunction disrupts cell signaling, leading to uncontrolled cell growth and tumor progression.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Protooncogenes and tumor suppressor genes are critical regulators of normal cellular functions.
- Their altered expression is a hallmark of cancer development (oncogenesis).
- Dysfunctional proteins encoded by these genes disrupt key signaling pathways.
Purpose of the Study:
- To elucidate the role of protooncogene and tumor suppressor gene expression changes in oncogenesis.
- To understand how protein product dysfunction impacts cellular regulatory mechanisms.
- To connect these molecular alterations to tumor initiation and progression.
Main Methods:
- Analysis of gene expression patterns in neoplastic tissues.
- Investigation of protein product function in cellular signaling pathways.
- Correlation of genetic alterations with physiological process dysregulation.
Main Results:
- Aberrant expression of protooncogenes and tumor suppressor genes was observed.
- Protein dysfunction led to dysregulation of cell cycle, apoptosis, and genetic stability.
- These molecular changes were linked to neoplastic cell transformation and tumor progression.
Conclusions:
- Changes in protooncogene and tumor suppressor gene expression are fundamental to cancer initiation.
- Disrupted cellular signaling pathways due to protein dysfunction drive tumor development.
- Understanding these genetic alterations is key to targeting cancer progression.
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