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2016 ; 17
(4
): 471
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The Expression Profile of Complement Components in Podocytes
#MMPMID27043537
Li X
; Ding F
; Zhang X
; Li B
; Ding J
Int J Mol Sci
2016[Mar]; 17
(4
): 471
PMID27043537
show ga
Podocytes are critical for maintaining the glomerular filtration barrier and are
injured in many renal diseases, especially proteinuric kidney diseases. Recently,
reports suggested that podocytes are among the renal cells that synthesize
complement components that mediate glomerular diseases. Nevertheless, the profile
and extent of complement component expression in podocytes remain unclear. This
study examined the expression profile of complement in podocytes under
physiological conditions and in abnormal podocytes induced by multiple stimuli.
In total, 23/32 complement component components were detected in podocyte by
conventional RT-PCR. Both primary cultured podocytes and immortalized podocytes
expressed the complement factors C1q, C1r, C2, C3, C7, MASP, CFI, DAF, CD59,
C4bp, CD46, Protein S, CR2, C1qR, C3aR, C5aR, and Crry (17/32), whereas C4, CFB,
CFD, C5, C6, C8, C9, MBL1, and MBL2 (9/32) complement factors were not expressed.
C3, Crry, and C1q-binding protein were detected by tandem mass spectrometry.
Podocyte complement gene expression was affected by several factors (puromycin
aminonucleoside (PAN), angiotensin II (Ang II), interleukin-6 (IL-6), and
transforming growth factor-? (TGF-?)). Representative complement components were
detected using fluorescence confocal microscopy. In conclusion, primary podocytes
express various complement components at the mRNA and protein levels. The
complement gene expressions were affected by several podocyte injury factors.
|*Transcriptome/drug effects
[MESH]
|Angiotensin II/genetics/metabolism
[MESH]
|Animals
[MESH]
|Carrier Proteins/genetics/metabolism
[MESH]
|Cells, Cultured
[MESH]
|Complement System Proteins/analysis/genetics/*metabolism
[MESH]