Review Article

Human Urine as a Noninvasive Source of Kidney Cells

Table 1

Types of kidney cells exfoliated in urine and their current applications.

Urine-derived kidney cellMarkers of disease activityDisease modelingStudying cell biology/physiologyTherapeutic effects

Podocytes(i) Diabetic nephropathy [13, 17]
(ii) Membranous nephropathy [61]
(iii) Focal and segmental glomerulosclerosis [11]
(iv) Henoch-Schönlein nephritis
(v) IgA nephritis
(vi) Lupus nephritis [9, 15]
(vii) Preeclampsia [18]
(viii) D + HUS [62]
(ix) Diffuse mesangial sclerosis [63]
(i) Lupus nephritis [16](i) Characterization [22]
(ii) Function [64, 65]
Not studied

PTECs(i) Acute tubular necrosis [66, 67]
(ii) Diabetes mellitus [67]
(i) Cystinosis [23, 24, 27]
(ii) Diabetes mellitus [67]
(iii) Hyperoxaluria [26]
(iv) Dent disease [29]
(v) Lowe syndrome [68]
(i) Characterization [30]
(ii) Function [28, 30, 69]
(i) Paracrine effects of conditioned medium [70]

Stem/progenitorsNot studiedNot studied(i) Characterization
[37, 38, 42, 43, 71, 72]
(i) Differentiation into glomerular cells [38, 73]
(ii) Genitourinary tissue reconstruction [7476]
(iii) Skeletal muscle regeneration [50, 77, 78]
(iv) Neurologic tissue reconstruction [79]

Extracellular vesicles(i) Focal and segmental glomerulosclerosis [80, 81]Not studied(i) Characterization [53, 8184]
(ii) Function [53]
(i) Kidney transplantation [57]