p38 MAP kinase activation mediates γ-globin gene induction in erythroid progenitors

Betty S. Pace, Xin Hua Qian, Jose Sangerman, Solomon F. Ofori-Acquah, B. Surendra Baliga, Jiahuai Han, Stuart D. Critz

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Objective. Our goal was to determine the role of p38 mitogen-activated protein kinase (MAPK) signaling in fetal hemoglobin (HbF) induction. Two histone deacetylase inhibitors (HDAIs), sodium butyrate (NB), and trichostatin (TSA) and hemin were analyzed. In addition, the effect of direct activation of p38 MAPK on γ-globin gene activity was studied. Method. Primary erythroid progenitors derived from peripheral blood mononuclear cell and K562 erythroleukemia cells were analyzed. Cells were grown in NB, TSA, hemin, or anisomycin either alone or in the presence of the p38 MAPK inhibitor SB203580. The effects of the various treatments on γ-globin RNA, HbF, and phosphorylated p38 MAPK levels were measured by RNase protection assay, alkaline denaturation, and Western blot analysis, respectively. A K562 stable line overexpressing constitutively active p38 MAPK was established using MAPK kinase kinase 3 (MKK3) and MKK6, the immediate upstream activators of p38. The direct effect of p38 MAPK overexpression on γ-globin mRNA synthesis was analyzed. Results. NB and TSA activated p38 MAPK and increased γ-globin mRNA levels in K562 cells and primary erythroid progenitors. Pretreatment with SB203580 blocked p38 MAPK and γ-globin gene activation. In contrast, no change in p38 activity was observed with hemin inductions. Direct activation of p38 by anisomycin or constitutive overexpression also increased γ-globin mRNA in the absence of HbF inducers in wild-type K562 cells and in the MKK stable lines. Conclusion. This study supports a novel role for p38 MAPK in γ-globin regulation in human erythroid progenitors.

Original languageEnglish (US)
Pages (from-to)1089-1096
Number of pages8
JournalExperimental Hematology
Volume31
Issue number11
DOIs
StatePublished - Nov 2003

Fingerprint

Globins
p38 Mitogen-Activated Protein Kinases
Genes
Hemin
K562 Cells
Anisomycin
Messenger RNA
MAP Kinase Kinase Kinase 3
Fetal Hemoglobin
Leukemia, Erythroblastic, Acute
Histone Deacetylase Inhibitors
Butyric Acid
Protein Kinase Inhibitors
Ribonucleases
Transcriptional Activation
Blood Cells
Western Blotting
RNA

ASJC Scopus subject areas

  • Molecular Biology
  • Hematology
  • Genetics
  • Cell Biology
  • Cancer Research

Cite this

Pace, B. S., Qian, X. H., Sangerman, J., Ofori-Acquah, S. F., Baliga, B. S., Han, J., & Critz, S. D. (2003). p38 MAP kinase activation mediates γ-globin gene induction in erythroid progenitors. Experimental Hematology, 31(11), 1089-1096. https://doi.org/10.1016/S0301-472X(03)00235-2

p38 MAP kinase activation mediates γ-globin gene induction in erythroid progenitors. / Pace, Betty S.; Qian, Xin Hua; Sangerman, Jose; Ofori-Acquah, Solomon F.; Baliga, B. Surendra; Han, Jiahuai; Critz, Stuart D.

In: Experimental Hematology, Vol. 31, No. 11, 11.2003, p. 1089-1096.

Research output: Contribution to journalArticle

Pace, BS, Qian, XH, Sangerman, J, Ofori-Acquah, SF, Baliga, BS, Han, J & Critz, SD 2003, 'p38 MAP kinase activation mediates γ-globin gene induction in erythroid progenitors', Experimental Hematology, vol. 31, no. 11, pp. 1089-1096. https://doi.org/10.1016/S0301-472X(03)00235-2
Pace, Betty S. ; Qian, Xin Hua ; Sangerman, Jose ; Ofori-Acquah, Solomon F. ; Baliga, B. Surendra ; Han, Jiahuai ; Critz, Stuart D. / p38 MAP kinase activation mediates γ-globin gene induction in erythroid progenitors. In: Experimental Hematology. 2003 ; Vol. 31, No. 11. pp. 1089-1096.
@article{a2eb9e18a0944e67b783796f8beebc40,
title = "p38 MAP kinase activation mediates γ-globin gene induction in erythroid progenitors",
abstract = "Objective. Our goal was to determine the role of p38 mitogen-activated protein kinase (MAPK) signaling in fetal hemoglobin (HbF) induction. Two histone deacetylase inhibitors (HDAIs), sodium butyrate (NB), and trichostatin (TSA) and hemin were analyzed. In addition, the effect of direct activation of p38 MAPK on γ-globin gene activity was studied. Method. Primary erythroid progenitors derived from peripheral blood mononuclear cell and K562 erythroleukemia cells were analyzed. Cells were grown in NB, TSA, hemin, or anisomycin either alone or in the presence of the p38 MAPK inhibitor SB203580. The effects of the various treatments on γ-globin RNA, HbF, and phosphorylated p38 MAPK levels were measured by RNase protection assay, alkaline denaturation, and Western blot analysis, respectively. A K562 stable line overexpressing constitutively active p38 MAPK was established using MAPK kinase kinase 3 (MKK3) and MKK6, the immediate upstream activators of p38. The direct effect of p38 MAPK overexpression on γ-globin mRNA synthesis was analyzed. Results. NB and TSA activated p38 MAPK and increased γ-globin mRNA levels in K562 cells and primary erythroid progenitors. Pretreatment with SB203580 blocked p38 MAPK and γ-globin gene activation. In contrast, no change in p38 activity was observed with hemin inductions. Direct activation of p38 by anisomycin or constitutive overexpression also increased γ-globin mRNA in the absence of HbF inducers in wild-type K562 cells and in the MKK stable lines. Conclusion. This study supports a novel role for p38 MAPK in γ-globin regulation in human erythroid progenitors.",
author = "Pace, {Betty S.} and Qian, {Xin Hua} and Jose Sangerman and Ofori-Acquah, {Solomon F.} and Baliga, {B. Surendra} and Jiahuai Han and Critz, {Stuart D.}",
year = "2003",
month = "11",
doi = "10.1016/S0301-472X(03)00235-2",
language = "English (US)",
volume = "31",
pages = "1089--1096",
journal = "Experimental Hematology",
issn = "0301-472X",
publisher = "Elsevier Inc.",
number = "11",

}

TY - JOUR

T1 - p38 MAP kinase activation mediates γ-globin gene induction in erythroid progenitors

AU - Pace, Betty S.

AU - Qian, Xin Hua

AU - Sangerman, Jose

AU - Ofori-Acquah, Solomon F.

AU - Baliga, B. Surendra

AU - Han, Jiahuai

AU - Critz, Stuart D.

PY - 2003/11

Y1 - 2003/11

N2 - Objective. Our goal was to determine the role of p38 mitogen-activated protein kinase (MAPK) signaling in fetal hemoglobin (HbF) induction. Two histone deacetylase inhibitors (HDAIs), sodium butyrate (NB), and trichostatin (TSA) and hemin were analyzed. In addition, the effect of direct activation of p38 MAPK on γ-globin gene activity was studied. Method. Primary erythroid progenitors derived from peripheral blood mononuclear cell and K562 erythroleukemia cells were analyzed. Cells were grown in NB, TSA, hemin, or anisomycin either alone or in the presence of the p38 MAPK inhibitor SB203580. The effects of the various treatments on γ-globin RNA, HbF, and phosphorylated p38 MAPK levels were measured by RNase protection assay, alkaline denaturation, and Western blot analysis, respectively. A K562 stable line overexpressing constitutively active p38 MAPK was established using MAPK kinase kinase 3 (MKK3) and MKK6, the immediate upstream activators of p38. The direct effect of p38 MAPK overexpression on γ-globin mRNA synthesis was analyzed. Results. NB and TSA activated p38 MAPK and increased γ-globin mRNA levels in K562 cells and primary erythroid progenitors. Pretreatment with SB203580 blocked p38 MAPK and γ-globin gene activation. In contrast, no change in p38 activity was observed with hemin inductions. Direct activation of p38 by anisomycin or constitutive overexpression also increased γ-globin mRNA in the absence of HbF inducers in wild-type K562 cells and in the MKK stable lines. Conclusion. This study supports a novel role for p38 MAPK in γ-globin regulation in human erythroid progenitors.

AB - Objective. Our goal was to determine the role of p38 mitogen-activated protein kinase (MAPK) signaling in fetal hemoglobin (HbF) induction. Two histone deacetylase inhibitors (HDAIs), sodium butyrate (NB), and trichostatin (TSA) and hemin were analyzed. In addition, the effect of direct activation of p38 MAPK on γ-globin gene activity was studied. Method. Primary erythroid progenitors derived from peripheral blood mononuclear cell and K562 erythroleukemia cells were analyzed. Cells were grown in NB, TSA, hemin, or anisomycin either alone or in the presence of the p38 MAPK inhibitor SB203580. The effects of the various treatments on γ-globin RNA, HbF, and phosphorylated p38 MAPK levels were measured by RNase protection assay, alkaline denaturation, and Western blot analysis, respectively. A K562 stable line overexpressing constitutively active p38 MAPK was established using MAPK kinase kinase 3 (MKK3) and MKK6, the immediate upstream activators of p38. The direct effect of p38 MAPK overexpression on γ-globin mRNA synthesis was analyzed. Results. NB and TSA activated p38 MAPK and increased γ-globin mRNA levels in K562 cells and primary erythroid progenitors. Pretreatment with SB203580 blocked p38 MAPK and γ-globin gene activation. In contrast, no change in p38 activity was observed with hemin inductions. Direct activation of p38 by anisomycin or constitutive overexpression also increased γ-globin mRNA in the absence of HbF inducers in wild-type K562 cells and in the MKK stable lines. Conclusion. This study supports a novel role for p38 MAPK in γ-globin regulation in human erythroid progenitors.

UR - http://www.scopus.com/inward/record.url?scp=0142165059&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0142165059&partnerID=8YFLogxK

U2 - 10.1016/S0301-472X(03)00235-2

DO - 10.1016/S0301-472X(03)00235-2

M3 - Article

C2 - 14585374

AN - SCOPUS:0142165059

VL - 31

SP - 1089

EP - 1096

JO - Experimental Hematology

JF - Experimental Hematology

SN - 0301-472X

IS - 11

ER -