Biomaterial Database

Normal and malignant megakaryopoiesis. 2011

Qiang Wen, and Benjamin Goldenson, and John D Crispino

Division of Hematology/Oncology, Northwestern University, Chicago, IL, USA.

Megakaryopoiesis is the process by which bone marrow progenitor cells develop into mature megakaryocytes (MKs), which in turn produce platelets required for normal haemostasis. Over the past decade, molecular mechanisms that contribute to MK development and differentiation have begun to be elucidated. In this review, we provide an overview of megakaryopoiesis and summarise the latest developments in this field. Specially, we focus on polyploidisation, a unique form of the cell cycle that allows MKs to increase their DNA content, and the genes that regulate this process. In addition, because MKs have an important role in the pathogenesis of acute megakaryocytic leukaemia and a subset of myeloproliferative neoplasms, including essential thrombocythemia and primary myelofibrosis, we discuss the biology and genetics of these disorders. We anticipate that an increased understanding of normal MK differentiation will provide new insights into novel therapeutic approaches that will directly benefit patients.

UI	MeSH Term	Description	Entries
D007947	Leukemia, Megakaryoblastic, Acute	An acute myeloid leukemia in which 20-30% of the bone marrow or peripheral blood cells are of megakaryocyte lineage. MYELOFIBROSIS or increased bone marrow RETICULIN is common.	Leukemia, Megakaryocytic,Leukemia, Megakaryocytic, Acute,Leukemia, Myeloid, Acute, M7,Megakaryoblastic Leukemia, Acute,Megakaryocytic Leukemia,Megakaryocytic Leukemia, Acute,Myeloid Leukemia, Acute, M7,Acute Megakaryoblastic Leukemia,Acute Megakaryoblastic Leukemias,Acute Megakaryocytic Leukemia,Acute Megakaryocytic Leukemias,Leukemia, Acute Megakaryoblastic,Leukemia, Acute Megakaryocytic,Leukemias, Acute Megakaryoblastic,Leukemias, Acute Megakaryocytic,Leukemias, Megakaryocytic,Megakaryoblastic Leukemias, Acute,Megakaryocytic Leukemias,Megakaryocytic Leukemias, Acute
D008533	Megakaryocytes	Very large BONE MARROW CELLS which release mature BLOOD PLATELETS.	Megakaryocyte
D009196	Myeloproliferative Disorders	Conditions which cause proliferation of hemopoietically active tissue or of tissue which has embryonic hemopoietic potential. They all involve dysregulation of multipotent MYELOID PROGENITOR CELLS, most often caused by a mutation in the JAK2 PROTEIN TYROSINE KINASE.	Disorder, Myeloproliferative,Disorders, Myeloproliferative,Myeloproliferative Disorder
D002454	Cell Differentiation	Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs.	Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013922	Thrombocytosis	Increased numbers of platelets in the peripheral blood. (Dorland, 27th ed)	Thrombocythemia,Thrombocythemias,Thrombocytoses
D055728	Primary Myelofibrosis	A de novo myeloproliferation arising from an abnormal stem cell. It is characterized by the replacement of bone marrow by fibrous tissue, a process that is mediated by CYTOKINES arising from the abnormal clone.	Agnogenic Myeloid Metaplasia,Bone Marrow Fibrosis,Chronic Idiopathic Myelofibrosis,Fibrosis, Bone Marrow,Idiopathic Myelofibrosis,Myelofibrosis,Myelofibrosis With Myeloid Metaplasia,Myeloid Metaplasia,Myelosclerosis,Myelosis, Nonleukemic,Agnogenic Myeloid Metaplasias,Bone Marrow Fibroses,Fibroses, Bone Marrow,Metaplasia, Agnogenic Myeloid,Metaplasia, Myeloid,Metaplasias, Agnogenic Myeloid,Metaplasias, Myeloid,Myelofibroses,Myelofibroses, Primary,Myelofibrosis, Primary,Myeloid Metaplasia, Agnogenic,Myeloid Metaplasias,Myeloid Metaplasias, Agnogenic,Myeloscleroses,Myeloses, Nonleukemic,Nonleukemic Myeloses,Nonleukemic Myelosis,Primary Myelofibroses
D034061	Thrombopoiesis	The process of generating thrombocytes (BLOOD PLATELETS) from the pluripotent HEMATOPOIETIC STEM CELLS in the BONE MARROW via the MEGAKARYOCYTES. The humoral factor with thrombopoiesis-stimulating activity is designated THROMBOPOIETIN.	Megakaryocytopoiesis,Thrombocytopoiesis,Megakaryocytopoieses,Thrombocytopoieses,Thrombopoieses