Endogenous Erythroid and Megakaryocytic Colony Formation in Serum-Free, Cytokine-Free Collagen Gels
| Autor: | Sylvie Hermouet, Danielle Pineau, Irè Ne Dobo, Mathilde Hunault, Marc Zandecki |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Male
Erythrocytes medicine.medical_treatment Immunology Endogeny Methylcellulose Biology Peripheral blood mononuclear cell Culture Media Serum-Free Colony-Forming Units Assay Polycythemia vera Bone Marrow Leukemia Myelogenous Chronic BCR-ABL Positive hemic and lymphatic diseases medicine Humans Erythropoietin Polycythemia Vera Cells Cultured Erythroid Precursor Cells Thrombocytosis Hematology medicine.disease Molecular biology Leukemia medicine.anatomical_structure Cytokine Female Collagen Bone marrow Gels Megakaryocytes Chronic myelogenous leukemia medicine.drug |
| Zdroj: | Journal of Hematotherapy & Stem Cell Research. 8:601-607 |
| ISSN: | 1525-8165 |
| Popis: | We studied the suitability of collagen-based semisolid medium for assay of endogenous erythroid colony formation performed in myeloproliferative disorders. Bone marrow (BM) mononuclear cells (MNC) from 103 patients suspected of having polycythemia vera (PV, 76 patients) or essential thrombocythemia (ET, 27 patients) were grown in collagen-based, serum-free, cytokine-free semisolid medium. Colony analysis at day 8 or 10 showed that this collagen assay is specific, as endogenous growth of erythroid colonies was never observed in cultures of 16 healthy donors and 6 chronic myelogenous leukemia (CML) patients. Endogenous erythroid colony formation was observed in 53.3% of patients suspected of PV, with only 15.4% of positive cultures for patients with 1 minor PV criterion and 72% (p = 0.009) of positive cultures for patients with > or =2 minor or 1 major PV criterion. Similarly, endogenous growth of erythroid colonies was found in 44.4% of patients suspected of ET, with 31.6% of positive cultures for patients with 1 ET criterion versus 75% for patients with > or =2 ET criteria. In addition, we found that in collagen gels, tests of erythropoietin (EPO) hypersensitivity in the presence of 0.01 or 0.05 U/ml of EPO and tests of endogenous colony-forming units-megakaryocyte (CFU-MK) formation cannot be used to detect PV or ET, as these tests were positive for, respectively, 21.4% and 50% of healthy donors and 83% and 50% of CML patients. A retrospective analysis suggests that collagen assays are more sensitive than methylcellulose assays to assess endogenous growth of erythroid colonies. In summary, serum-free collagen-based colony assays are simple and reliable assays of endogenous growth of erythroid colonies in myeloproliferative diseases. They also appear to be more sensitive than methylcellulose-based assays. |
| Databáze: | OpenAIRE |
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