Conditionally immortalized human podocyte cell lines established from urine

T Sakairi, Y Abe, H Kajiyama… - American Journal …, 2010 - journals.physiology.org
T Sakairi, Y Abe, H Kajiyama, LD Bartlett, LV Howard, PS Jat, JB Kopp
American Journal of Physiology-Renal Physiology, 2010journals.physiology.org
Evidence suggests that loss of podocytes into urine contributes to development of
glomerular diseases; shed podocytes are frequently viable and proliferate in culture
conditions. To determine the phenotypic characteristics of viable urinary cells derived from
human subjects, we established long-term urinary cell culture from two patients with focal
segmental glomerulosclerosis and two healthy volunteers, via transformation with the
thermosensitive SV40 large T antigen (U19tsA58) together with human telomerase (hTERT) …
Evidence suggests that loss of podocytes into urine contributes to development of glomerular diseases; shed podocytes are frequently viable and proliferate in culture conditions. To determine the phenotypic characteristics of viable urinary cells derived from human subjects, we established long-term urinary cell culture from two patients with focal segmental glomerulosclerosis and two healthy volunteers, via transformation with the thermosensitive SV40 large T antigen (U19tsA58) together with human telomerase (hTERT). Characterization of arbitrarily selected two clonal cell lines from each human subject was carried out. mRNA expression for the podocyte markers synaptopodin, nestin, and CD2AP were detected in all eight clones. Podocin mRNA was absent from all eight clones. The expression of nephrin, Wilms' tumor 1 (WT1), and podocalyxin mRNA varied among the clones, which may be due to transformation and/or cloning. These results suggest that podocyte cell lines can be established consistently from human urine. The generation of podocyte cell lines from urine of patients and healthy volunteers is novel and will help to advance studies of podocyte cell biology. Further improvements in the approaches to cell transformation and/or cell culture techniques are needed to allow cultured podocytes to fully reproduce in vivo characteristics.
American Physiological Society