HCEC-12

HCEC-12 is a well-characterized, immortalized human corneal endothelial cell line established in 1996. It was derived from the posterior corneal epithelium of a 91-year-old Caucasian woman and immortalized via transformation with the SV40 early region, which encodes the large T-antigen and small t-antigen. The cells exhibit an adherent, epithelioid morphology, growing in monolayers.

The primary advantage of HCEC-12 is its provision of a consistent, renewable source of human corneal endothelial cells (HCEnCs), overcoming the significant limitations of primary cells which have poor proliferative capacity in vivo. HCEC-12 cells retain key physiological characteristics, serving as a valuable in vitro model for studying corneal endothelial biology. For instance, they have been instrumental in elucidating the role of mechanotransduction, demonstrating stiffness-dependent responses that regulate proliferation and phenotype. They also express functional temperature-sensitive TRPV channels, which are essential for corneal endothelial homeostasis. Furthermore, the extracellular matrix (ECM) produced by HCEC-12 can stimulate the growth of primary HCEnCs, highlighting its utility in developing culture systems.

Consequently, HCEC-12 is extensively utilized in research areas including corneal tissue engineering, drug screening, and studies on cell replacement therapy. Its well-documented profile and wide availability make it an indispensable platform for advancing ocular surface and corneal research.