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Cell-type-specific and hypoxia-inducible expression of the human erythropoietin gene in transgenic mice

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America; (United States)
; ; ;  [1];  [2]
  1. Johns Hopkins Univ., Baltimore, MD (United States)
  2. Vanderbilt Univ., Nashville, TN (United States)

Synthesis of erythropoietin, the primary humoral regulator or erythropoiesis, in liver and kidney is inducible by anemia or hypoxia. Analysis of human erythropoietin gene expression in transgenic mice revealed that sequences located 6-14 kilobases 5{prime} to the gene direct expression to the kidney, whereas sequences within the immediate 3{prime}-flanking region control hepatocyte-specific expression. Human erythropoietin transcription initiation sites were differentially utilized in liver and kidney. Inducible transgene expression was precisely targeted to peritubular interstitial cells in the renal cortex that synthesize endogenous mouse erythropoietin. These studies demonstrate that multiple erythropoietin gene regulatory elements control cello-type-specific expression and inducibility by a fundamental physiologic stimulus, hypoxia.

OSTI ID:
5604494
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America; (United States), Journal Name: Proceedings of the National Academy of Sciences of the United States of America; (United States) Vol. 88:19; ISSN 0027-8424; ISSN PNASA
Country of Publication:
United States
Language:
English