Скачать или смотреть 5 essential Alterations Significant for malignant Transformation in a Tissue or cell

5 Essential Alterations Significant for Malignant Transformation in a Tissue or Cell:

1. Genetic Instability and Mutation

Alterations in DNA repair mechanisms
Mutations in tumor suppressor genes (e.g., TP53) or oncogenes (e.g., KRAS)
Epigenetic changes (e.g., DNA methylation, histone modification)

2. Uncontrolled Cell Proliferation and Growth

Dysregulation of cell cycle checkpoints
Overexpression of growth factors or receptors (e.g., EGFR)
Activation of signaling pathways (e.g., PI3K/AKT, MAPK/ERK)

3. Loss of Apoptosis and Cell Death

Inhibition of pro-apoptotic proteins (e.g., BAX, BAK)
Overexpression of anti-apoptotic proteins (e.g., BCL-2, BCL-XL)
Dysregulation of apoptotic signaling pathways (e.g., TNF-α, FAS)

4. Angiogenesis and Metabolic Reprogramming

Upregulation of angiogenic factors (e.g., VEGF, HIF-1α)
Increased glucose metabolism and glycolysis (Warburg effect)
Altered lipid metabolism and fatty acid synthesis

5. Invasion and Metastasis

Loss of cell-cell adhesion (e.g., E-cadherin downregulation)
Increased cell migration and invasion (e.g., MMPs, CXCR4)
Dysregulation of epithelial-to-mesenchymal transition (EMT)

These alterations enable cancer cells to acquire the hallmarks of malignancy, including:

1. Self-sufficiency in growth signals
2. Insensitivity to anti-growth signals
3. Evading apoptosis
4. Limitless replicative potential
5. Sustained angiogenesis
6. Tissue invasion and metastasis

Key Players:

Oncogenes (e.g., KRAS, BRAF, MYC)
Tumor suppressor genes (e.g., TP53, BRCA1, BRCA2)
Epigenetic regulators (e.g., DNMT1, HDAC1)
Signaling pathways (e.g., PI3K/AKT, MAPK/ERK)

Clinical Implications:

Early detection and diagnosis
Targeted therapies (e.g., kinase inhibitors, anti-angiogenic agents)
Combination treatments (e.g., chemotherapy, radiation, immunotherapy)
Personalized medicine approaches

#Malignant #malignancy