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APOL1 Kidney Disease Risk Variants: An Evolving Landscape

期刊

SEMINARS IN NEPHROLOGY
卷 35, 期 3, 页码 222-236

出版社

W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.semnephrol.2015.04.008

关键词

Health disparities; chronic kidney disease; focal segmental glomerulosclerosis; innate immunity; APOL1

资金

  1. National Cancer Institute, National Institutes of Health [HHSN26120080001E]
  2. Intramural Research Program of the NIH, National Cancer Institute, Center for Cancer Research
  3. Intramural Research Programs of the NIDDK, NIH

向作者/读者索取更多资源

Apolipoprotein L1 (APOL1) genetic variants account for much of the excess risk of chronic and end-stage kidney disease, which results in a significant global health disparity for persons of African ancestry. We estimate the lifetime risk of kidney disease in APOL1 dual-risk allele individuals to be at least 15%. Experimental evidence suggests a direct role of APOL1 in pore formation, cellular injury, and programmed cell death in renal injury. The APOL1 BH3 motif, often associated with cell death, is unlikely to play a role in APOL1-induced cytotoxicity because it is not conserved within the APOL family and is dispensable for cell death in vitro. We discuss two models for APOL1 trypanolytic activity: one involving lysosome permeabilization and another involving colloidosmotic swelling of the cell body, as well as their relevance to human pathophysiology. Experimental evidence from human cell culture models suggests that both mechanisms may be operative. A systems biology approach whereby APOL1-associated perturbations in gene and protein expression in affected individuals are correlated with molecular pathways may be productive to elucidate APOL1 function in vivo. Published by Elsevier Inc.

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