Development and characterization of a novel CD34 monoclonal antibody that identifies sheep hematopoietic stem/progenitor cells

Christopher D. Porada, Duygu Dee Harrison-Findik, Chad Sanada, Vincent Valiente, David Thain, Paul J. Simmons, Graça Almeida-Porada, Esmail D. Zanjani

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Objective: We and many others have long used sheep as a predictive model system in which to explore stem cell transplantation. Unfortunately, while numerous markers are available to identify and isolate human hematopoietic stem cells (HSC), no reagents exist that allow HSC/progenitors from sheep to be identified or purified, greatly impeding the application of this well-established large animal model to the study of autologous or allogeneic HSC transplantation. The current studies were undertaken to create a monoclonal antibody to sheep CD34 that would enable isolation and study of sheep HSC/progenitors. Materials and Methods: A partial cDNA to the extracellular domain of the sheep CD34 antigen was polymerase chain reaction cloned, characterized, and used to genetically immunize mice and create hybridomas. Results: The resultant monoclonal antibody to sheep CD34 allows flow cytometric detection of sheep HSC/progenitors present within bone marrow, cord blood, and mobilized peripheral blood. Moreover, this antibody can be used to enrich for HSC/progenitors with enhanced in vitro colony-forming potential, and also identifies endothelial cells in situ within paraffin-embedded tissue sections, similarly to antibodies to human CD34. Conclusions: The availability of this monoclonal antibody recognizing the stem cell antigen CD34 in sheep will greatly facilitate the study of autologous and allogeneic HSC transplantation using this clinically relevant large animal model.

Original languageEnglish (US)
Pages (from-to)1739-1749
Number of pages11
JournalExperimental Hematology
Volume36
Issue number12
DOIs
StatePublished - Dec 1 2008

Fingerprint

Hematopoietic Stem Cells
Sheep
Monoclonal Antibodies
CD34 Antigens
Hematopoietic Stem Cell Transplantation
Animal Models
Antibodies
Hybridomas
Stem Cell Transplantation
Fetal Blood
Paraffin
Stem Cells
Endothelial Cells
Complementary DNA
Bone Marrow
Polymerase Chain Reaction

ASJC Scopus subject areas

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

Cite this

Porada, C. D., Harrison-Findik, D. D., Sanada, C., Valiente, V., Thain, D., Simmons, P. J., ... Zanjani, E. D. (2008). Development and characterization of a novel CD34 monoclonal antibody that identifies sheep hematopoietic stem/progenitor cells. Experimental Hematology, 36(12), 1739-1749. https://doi.org/10.1016/j.exphem.2008.09.003

Development and characterization of a novel CD34 monoclonal antibody that identifies sheep hematopoietic stem/progenitor cells. / Porada, Christopher D.; Harrison-Findik, Duygu Dee; Sanada, Chad; Valiente, Vincent; Thain, David; Simmons, Paul J.; Almeida-Porada, Graça; Zanjani, Esmail D.

In: Experimental Hematology, Vol. 36, No. 12, 01.12.2008, p. 1739-1749.

Research output: Contribution to journalArticle

Porada, CD, Harrison-Findik, DD, Sanada, C, Valiente, V, Thain, D, Simmons, PJ, Almeida-Porada, G & Zanjani, ED 2008, 'Development and characterization of a novel CD34 monoclonal antibody that identifies sheep hematopoietic stem/progenitor cells', Experimental Hematology, vol. 36, no. 12, pp. 1739-1749. https://doi.org/10.1016/j.exphem.2008.09.003
Porada, Christopher D. ; Harrison-Findik, Duygu Dee ; Sanada, Chad ; Valiente, Vincent ; Thain, David ; Simmons, Paul J. ; Almeida-Porada, Graça ; Zanjani, Esmail D. / Development and characterization of a novel CD34 monoclonal antibody that identifies sheep hematopoietic stem/progenitor cells. In: Experimental Hematology. 2008 ; Vol. 36, No. 12. pp. 1739-1749.
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