Small VCP Interacting Protein (SVIP) is essential for maintaining a unique form of tubular lysosomes (TLs) in . Although do not have an annotated ortholog, expression of in the intestine induces TLs constitutively, increases autophagic activity, and extends healthspan. Here, we find that expression of the human ortholog of in the gut causes similar physiological and phenotypic effects as , albeit some effects were less pronounced. These results demonstrate that human can induce functional TLs in but may be a weaker allele compared to .
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http://dx.doi.org/10.17912/micropub.biology.001379 | DOI Listing |
FASEB J
January 2025
Department of Hematology, Nephrology, and Rheumatology, Graduate School of Medicine, Akita University, Akita, Japan.
Various tubular diseases in patients with multiple myeloma (MM) are caused by monoclonal immunoglobulin light chains (LCs). However, the physicochemical characteristics of the disease-causing LCs contributing to the onset of MM-associated tubular diseases remain unclear. We herein report a rare case of MM-associated combined tubulopathies: non-crystalline light chain proximal tubulopathy (LCPT) and crystalline light chain cast nephropathy (LCCN).
View Article and Find Full Text PDFNat Rev Nephrol
January 2025
Institute of Anatomy, University of Zurich, Zurich, Switzerland.
The kidney proximal tubule reabsorbs and degrades filtered plasma proteins to reclaim valuable nutrients and maintain body homeostasis. Defects in this process result in proteinuria, one of the most frequently used biomarkers of kidney disease. Filtered proteins enter proximal tubules via receptor-mediated endocytosis and are processed within a highly developed apical endo-lysosomal system (ELS).
View Article and Find Full Text PDFTransl Res
January 2025
Department of Nephrology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China. Electronic address:
Renal ischemia-reperfusion injury (IRI) is a common clinical condition that currently lacks effective treatment options. Inhibitors targeting the sodium-glucose co-transporter-2 (SGLT-2), recognized for their role in managing hyperglycemia, have demonstrated efficacy in enhancing the health outcomes for diabetic patients grappling with chronic kidney disease. Nevertheless, the precise impact of SGLT-2 inhibitors on renal ischemia-reperfusion injury (IRI) and the corresponding transcriptomic alterations remain to be elucidated.
View Article and Find Full Text PDFJCI Insight
December 2024
Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan.
With the aging of society, the incidence of chronic kidney disease (CKD), a common cause of death, has been increasing. Transcription factor EB (TFEB), the master transcriptional regulator of the autophagy-lysosomal pathway, is regarded as a promising candidate for preventing various age-related diseases. However, whether TFEB in the proximal tubules plays a significant role in elderly CKD patients remains unknown.
View Article and Find Full Text PDFEMBO Rep
December 2024
Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India.
Salmonella enterica serotype Typhimurium (Salmonella) resides and multiplies intracellularly in cholesterol-rich compartments called Salmonella-containing vacuoles (SCVs) with actin-rich tubular extensions known as Salmonella-induced filaments (SIFs). SCV maturation depends on host-derived cholesterol, but the transport mechanism of low-density lipoprotein (LDL)-derived cholesterol to SCVs remains unclear. Here we find that peroxisomes are recruited to SCVs and function as pro-bacterial organelle.
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