Hemoglobin switching in sheep and goats

erythropoietin dependent synthesis of hemoglobin C in goat bone marrow cultures

J. E. Barker, Jerold A Last, S. L. Adams

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The anemia induced switch from hemoglobin A(α2β2A) to hemoglobin C(α2β2C) synthesis occurring in vivo in sheep and goats has been reproduced in tissue culture of goat bone narrow cells. Cultivation of primary cultures of goat bone marrow in the presence of erythropoietin results in the appearance of detectable amounts of βC globin after 48-72 hr, as well as in a decrease in βA globin. A population of proerythroblasts, as well as active heme and globin synthesis, are maintained for at least 3 days in erythropoietin treated, but not in erythropoietin deficient, cultures. These findings demonstrate maintenance of erythropoietin responsive cells from bone marrow in vitro, and switching in vitro from the synthesis of a globin chain coded by one gene to that coded by a different, nonallelic gene. Bone marrow culture might be a useful model system for study of the mechanism of action of erythropoietin and for study of the activation (and inactivation) of specific genes in vitro.

Original languageEnglish (US)
Pages (from-to)1739-1743
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume70
Issue number6
StatePublished - 1973
Externally publishedYes

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Hemoglobin C
Erythropoietin
Goats
Globins
Sheep
Hemoglobins
Bone Marrow
Hemoglobin A
Erythroblasts
Gene Silencing
Heme
Bone Marrow Cells
Genes
Anemia
Maintenance
Bone and Bones
Population
In Vitro Techniques

ASJC Scopus subject areas

  • General
  • Genetics

Cite this

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title = "Hemoglobin switching in sheep and goats: erythropoietin dependent synthesis of hemoglobin C in goat bone marrow cultures",
abstract = "The anemia induced switch from hemoglobin A(α2β2A) to hemoglobin C(α2β2C) synthesis occurring in vivo in sheep and goats has been reproduced in tissue culture of goat bone narrow cells. Cultivation of primary cultures of goat bone marrow in the presence of erythropoietin results in the appearance of detectable amounts of βC globin after 48-72 hr, as well as in a decrease in βA globin. A population of proerythroblasts, as well as active heme and globin synthesis, are maintained for at least 3 days in erythropoietin treated, but not in erythropoietin deficient, cultures. These findings demonstrate maintenance of erythropoietin responsive cells from bone marrow in vitro, and switching in vitro from the synthesis of a globin chain coded by one gene to that coded by a different, nonallelic gene. Bone marrow culture might be a useful model system for study of the mechanism of action of erythropoietin and for study of the activation (and inactivation) of specific genes in vitro.",
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TY - JOUR

T1 - Hemoglobin switching in sheep and goats

T2 - erythropoietin dependent synthesis of hemoglobin C in goat bone marrow cultures

AU - Barker, J. E.

AU - Last, Jerold A

AU - Adams, S. L.

PY - 1973

Y1 - 1973

N2 - The anemia induced switch from hemoglobin A(α2β2A) to hemoglobin C(α2β2C) synthesis occurring in vivo in sheep and goats has been reproduced in tissue culture of goat bone narrow cells. Cultivation of primary cultures of goat bone marrow in the presence of erythropoietin results in the appearance of detectable amounts of βC globin after 48-72 hr, as well as in a decrease in βA globin. A population of proerythroblasts, as well as active heme and globin synthesis, are maintained for at least 3 days in erythropoietin treated, but not in erythropoietin deficient, cultures. These findings demonstrate maintenance of erythropoietin responsive cells from bone marrow in vitro, and switching in vitro from the synthesis of a globin chain coded by one gene to that coded by a different, nonallelic gene. Bone marrow culture might be a useful model system for study of the mechanism of action of erythropoietin and for study of the activation (and inactivation) of specific genes in vitro.

AB - The anemia induced switch from hemoglobin A(α2β2A) to hemoglobin C(α2β2C) synthesis occurring in vivo in sheep and goats has been reproduced in tissue culture of goat bone narrow cells. Cultivation of primary cultures of goat bone marrow in the presence of erythropoietin results in the appearance of detectable amounts of βC globin after 48-72 hr, as well as in a decrease in βA globin. A population of proerythroblasts, as well as active heme and globin synthesis, are maintained for at least 3 days in erythropoietin treated, but not in erythropoietin deficient, cultures. These findings demonstrate maintenance of erythropoietin responsive cells from bone marrow in vitro, and switching in vitro from the synthesis of a globin chain coded by one gene to that coded by a different, nonallelic gene. Bone marrow culture might be a useful model system for study of the mechanism of action of erythropoietin and for study of the activation (and inactivation) of specific genes in vitro.

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JO - Proceedings of the National Academy of Sciences of the United States of America

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