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Related Concept Videos

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Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
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Regulation of Hematopoietic Stem Cells01:01

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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
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Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
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Commitment is the  process whereby stem cells:
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The Intrinsic Apoptotic Pathway01:31

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Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
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Related Experiment Video

Updated: Apr 19, 2026

Simplified Intrafemoral Injections Using Live Mice Allow for Continuous Bone Marrow Analysis
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THPO-MPL pathway and bone marrow failure.

Majed Dasouki1, Irfan Saadi2, Syed O Ahmed3

  • 1Department of Genetics, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia; Department of Neurology, University of Kansas Medical Center, Kansas City, KS, USA.

Hematology/Oncology and Stem Cell Therapy
|December 9, 2014
PubMed
Summary

Bone marrow failure, a serious health issue, stems from genetic and environmental factors. Advances in understanding the THPO-MPL pathway offer new diagnostic and therapeutic strategies for hematopoiesis.

Keywords:
Aplastic anemiaBone marrow failureCALR (calreticulin)EltrombopagJAK (Janus Kinase)MPL (myeloproliferative leukemia virus)MyelofibrosisRomiplostimTHPO (Thrombopoietin)Thrombocythemia

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Area of Science:

  • Hematology
  • Molecular Biology
  • Genetics

Background:

  • Bone marrow failure (BMF) is a critical condition with diverse etiologies, including inherited and acquired factors like toxins.
  • Normal blood cell production (hematopoiesis) relies on intricate signaling pathways, notably the thrombopoietin-MPL (THPO-MPL) pathway.

Discussion:

  • Understanding the molecular mechanisms underlying BMF is crucial for developing effective treatments.
  • The THPO-MPL pathway plays a pivotal role in regulating megakaryopoiesis and platelet production, and its dysfunction is implicated in various BMF syndromes.

Key Insights:

  • Recent research has elucidated the complex functions of the THPO-MPL pathway in both normal hematopoiesis and BMF.
  • Aberrations in this pathway can lead to distinct BMF phenotypes, highlighting its diagnostic and therapeutic relevance.

Outlook:

  • Continued investigation into the THPO-MPL pathway and related signaling networks promises to yield novel biomarkers for BMF.
  • Targeted therapies aimed at modulating the THPO-MPL pathway are emerging as promising strategies for managing BMF.