Apoptosis pathway in renal tubular epithelial cell

Apoptosis pathways in renal tubular epithelial cells refer to a collection of intracellular signaling cascades mediating programmed cell death in the kidney’s tubular epithelium. These pathways include the FAS/FAS-L–MAPK/JNK axis, activation of caspases via RANK/RANK-L, mitochondrial permeability transition regulated by Bcl-2 family proteins, and downstream release of cytochrome c leading to nuclear fragmentation and cell death. The balance between pro- and anti-apoptotic factors (such as Bax and Bcl-2) determines susceptibility to apoptosis. Pathological activation contributes to significant renal tubular cell loss in acute kidney injury, chronic kidney diseases, and diabetic nephropathy. Therapeutic efforts target upstream modulators (e.g., angiotensin II receptors, MAPK/JNK kinases), pro-apoptotic proteins, and signaling intermediates (e.g., SMYD2, RIPK3, GADD45B) to prevent inappropriate cell death. However, the term itself is not a canonical target but rather a functional process modulated by numerous, more discrete molecular entities.

Other names

Programmed cell death pathway in renal tubular epithelial cellTubular epithelial cell apoptosis pathway

Inhibition of key signaling intermediates that promote apoptosis (e.g., blocking angiotensin receptors, JNK/p38 pathway inhibition, inhibition of Bcl-2 family pro-apoptotic proteins, nAChR blockade, suppression of SMYD2 or RIPK3 activity)