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Human kidney proteomics, glomerular and tubular cellular and matrix fractions

ABSTRACT: kidney samples: 15, 29, 37, 61, 67 and 69 years of age. The glomerular and tubulointerstitial samples were processed to enrich for extracellular matrix components and the fractions analysed by mass spectrometry.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Kidney

SUBMITTER: Louise Hopkinson

LAB HEAD: Rachel Lennon

PROVIDER: PXD026002 | Pride | 2021-10-13

REPOSITORIES: pride

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			Action	DRS
	20160115_MR_G1.raw	Raw
	20160115_MR_G10.raw	Raw
	20160115_MR_G11.raw	Raw
	20160115_MR_G12.raw	Raw
	20160115_MR_G2.raw	Raw

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Human kidney proteomics, glomerular and tubular cellular and matrix fractions

Project description:Glomerular and tubulointerstitial fractions were enriched from human kidneys samples. Ages of human kidney samples: 15, 29, 37, 61, 67 and 69 years of age. The glomerular and tubulointerstitial samples were processed to enrich for extracellular matrix components and the fractions analysed by mass spectrometry.

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Project description:Backgrounds: The present study addressed whether V-domain Ig suppressor of T cell activation (VISTA), constitutively expressed in kidney macrophages, has a protective role in tubulointerstitial fibrotic transformation after acute antibody-mediated glomerulonephritis. Methods: Wild-type (WT) and VISTA-deficient (Vsir-/-, KO) mice were treated with nephrotoxic serum to induced acute antibody-mediated glomerulonephritis, and their cytokine and fibrosis profiles were compared. Results: VISTA was highly expressed in kidney macrophages (resident more than infiltrating subset). If VISTA was depleted, tubules suffered further damage after glomerular injury. In damaged Vsir–/– mice, the contact frequency of macrophages with infiltrated T cells increased, and then the immunometabolic characteristics of T cells changed to overproduction of interferon-γ. The Vsir–/– parenchymal tissue cells responded to this altered milieu as more producing interleukin-9, which augmented tubulointerstitial fibrosis and irreversible kidney dysfunction. The blocking antibodies against interferon-γ and interleukin-9 protected above pathological process by VISTA depletion. Conclusions: VISTA is a sentinel protein of kidney macrophages, which prevents tubulointerstitial fibrosis via interferon-γ-interleukin-9 axis after acute antibody-mediated glomerular injury.

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