J2 Rar -

dtic.mil/sti/tr/pdf/ADA386879.pdf">RARβ2 methylation process, or should I expand on its role in a specific type of cancer like lung cancer ?

One of the most common reasons RARβ2 stops working is epigenetic silencing through a process called DNA methylation. In many malignancies, such as lung and head and neck cancers, the promoter region of the RARβ2 gene—essentially its "on switch"—becomes chemically modified by methyl groups. This physical blockage prevents the cell's machinery from reading the gene. Furthermore, enzymes known as histone deacetylases (HDACs) help lock the DNA into a tightly coiled, inactive state, further ensuring that the gene remains silent. J2 rar

CCL28-induced RARβ expression inhibits oral squamous cell ... - PMC This physical blockage prevents the cell's machinery from

RARβ2 functions as a "brake" on cell growth. When activated by its natural ligand, retinoic acid (a derivative of Vitamin A), it binds to specific regions of DNA to trigger the transcription of genes that tell the cell to stop dividing or to die if it is damaged. In healthy epithelial cells, such as those in the lungs or breasts, RARβ2 maintains tissue integrity by ensuring that cells differentiate correctly. - PMC RARβ2 functions as a "brake" on cell growth