Kidney Secreted Proteins
Kidney Secreted Proteins - Related Videos
10:15
Identification of the Source of Secreted Proteins in the Kidney by Brefeldin A Injection
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Cited by 3 •
2021
Identifying the cell type responsible for secreting cytokines is necessary to understand the pathobiology of kidney disease. Here, we describe a method to quantitatively stain kidney tissue for cytokines produced by kidney epithelial or interstitial cells using brefeldin A, a secretion inhibitor, and cell-type-specific markers.
01:26
Bacterial Translocation and Protein Secretion
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2025
Bacterial protein secretion involves translocation systems to ensure proteins reach their designated locations, including the plasma membrane, periplasm, outer membrane, or the external environment. These translocation systems are vital for bacterial physiology, supporting processes like membrane assembly, enzymatic activity in the periplasm, and interactions with the external environment. The division of labor between Sec and Tat pathways ensures efficiency in handling proteins with diverse...
08:19
The Mouse Isolated Perfused Kidney Technique
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Cited by 24 •
2016
The mouse isolated perfused kidney (MIPK) is a technique for keeping a mouse kidney under ex vivo conditions perfused and functional for 1 hr. The buffers and surgical technique are described in detail.
05:51
Coculture Analysis of Extracellular Protein Interactions Affecting Insulin Secretion by Pancreatic Beta Cells
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Cited by 3 •
2013
Transcellular protein interactions are important determinants of pancreatic beta-cell function. Detailed here is a method—adapted from a coculture model of synaptogenesis—for investigating how specific transmembrane proteins influence insulin secretion. Transfected HEK293 cells express proteins of interest; beta cells do not need to be transfected or otherwise directly perturbed.
07:09
A Convenient and General Expression Platform for the Production of Secreted Proteins from Human Cells
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Cited by 17 •
2012
In the post-human genomics era, the availability of recombinant proteins in native conformations is crucial to structural, functional and therapeutic research and development. Here, we describe a test- and large-scale protein expression system in human embryonic kidney 293T cells that can be used to produce a variety of recombinant proteins.
FAQs
Renin release from juxtaglomerular cells connects kidney activity with blood-pressure and fluid-balance regulation. These specialized renal cells secrete renin into the bloodstream, allowing a kidney-derived signal to act systemically. Consequently, studying renin provides a way to examine how renal secretion contributes to endocrine signaling and homeostatic control.
Low oxygen provides the signal for erythropoietin production by renal interstitial cells. This links local oxygen sensing in kidney tissue to an endocrine response that can influence the wider organism. Measuring this protein is therefore relevant when researchers investigate how altered renal physiology affects systemic signaling rather than only local filtration.
Uromodulin illustrates how tubular secretion shapes the contents of urine. In contrast to renin and erythropoietin, which are associated with release into the bloodstream, uromodulin is released from tubular cells into the urinary tract. This distinction helps researchers relate a protein’s renal source and destination to changes in urinary composition.
The producing cell helps determine where a protein is released and which physiological process it reflects. Juxtaglomerular secretion points toward blood-pressure and fluid-balance regulation, interstitial-cell secretion responds to low oxygen, and tubular secretion contributes to urinary composition. Comparing these cellular origins gives kidney biology a mechanistic framework for interpreting protein measurements.
Blood and urine measurements answer different contextual questions about renal secretion. Blood analysis can reflect proteins released into circulation, whereas urine analysis can capture tubular delivery and changes in urinary composition. Using these sample types supports complementary assessment of endocrine signaling, local renal output, and abnormalities associated with kidney dysfunction.
Protein measurements can support biomarker discovery, disease classification, and treatment monitoring. They also help investigators connect altered urinary or circulating protein patterns with mechanisms of kidney injury. These uses make the measurements valuable both for identifying biologically informative signals and for following how disease status or therapeutic response changes over time.
Renal dysfunction may alter endocrine signaling, immune responses, and urinary composition, so protein patterns can reflect several interconnected physiological changes. Researchers interpret measurements in that broader context, using them to classify disease, investigate injury mechanisms, or monitor treatment. The result is a systems-level view of how kidney impairment affects homeostasis.