Hspd1-KO Mouse

Hspd1, also known as mitochondrial heat shock protein 60 (HSP60), is a crucial mitochondrial chaperone. It functions as a folding machinery for mitochondrial proteins imported into the mitochondrial matrix space [3]. It is associated with stress response pathways and plays a role in maintaining mitochondrial integrity [2].

In osteosarcoma, Hspd1 expression is increased and correlates with negative prognosis. In vitro and in vivo experiments show it promotes osteosarcoma cell proliferation, metastasis, and inhibits apoptosis by promoting epithelial-mesenchymal transition (EMT) and activating AKT/mTOR signaling. It may achieve this by interacting with ATP5A1 to reduce its K48-linked ubiquitination and degradation [1].

In oral squamous cell carcinoma, higher Hspd1 protein levels are associated with tumorigenesis, poor prognosis, and lymph node invasion. Knockdown of Hspd1 induces E-cadherin expression and decreases cell migration and invasion, while its overexpression has the opposite effects [4].

In conclusion, Hspd1 is essential for mitochondrial protein folding and mitochondrial integrity. Its dysregulation is associated with various cancers, such as osteosarcoma and oral squamous cell carcinoma. Studies on Hspd1 help understand its role in cancer progression, providing potential therapeutic targets for these diseases.