Caspase-12: a member of the caspase family, a group of cysteine proteases that play a crucial role in programmed cell death, also known as apoptosis. Caspase-12 is specifically involved in the endoplasmic reticulum (ER) stress-induced apoptosis pathway.
On one hand, caspase-12 can act as a tumor suppressor by promoting apoptosis in response to ER stress, which can occur in cancer cells due to their high metabolic rate and increased demand for protein synthesis.
On the other hand, some studies have suggested that caspase-12 can also contribute to cancer progression and resistance to chemotherapy. For example, caspase-12 can be inactivated in certain types of cancer, such as breast and lung cancer, which can lead to reduced apoptosis and increased tumor growth.
Role of Caspase-12:
Function: Caspase-12 is involved in the apoptotic pathway triggered by ER stress. It can activate downstream effector caspases, leading to apoptosis. It also plays a role in the inflammatory response by processing pro-inflammatory cytokines.
Location: Unlike many other caspases, caspase-12 is primarily localized in the cytosol and the ER.
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