Biology of childhood acute lymphoblastic leukemia

Deepa Bhojwani1, Jun J Yang2, Ching-Hon Pui1

  • 1Department of Oncology, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA.

Insights

Advances in childhood acute lymphoblastic leukemia (ALL) management stem from international collaboration. This review covers biological insights, genomic alterations, and epigenetic mechanisms driving leukemic transformation and treatment response.

Area of Science:

  • Pediatric Oncology
  • Molecular Biology
  • Genetics

Background:

  • Childhood acute lymphoblastic leukemia (ALL) management has significantly improved due to decades of research.
  • International collaborative efforts have been crucial for enhancing therapeutic outcomes and understanding ALL biology.

Purpose of the Study:

  • To review recent biological insights into childhood ALL.
  • To discuss genomic lesions and epigenetic mechanisms in leukemic transformation.
  • To highlight the importance of host biology in treatment response and toxicity.

Main Methods:

  • Literature review of recent biological studies on childhood ALL.
  • Analysis of genomic alterations and epigenetic modifications.
  • Examination of host biology's role in treatment variability.

Main Results:

  • Significant progress in understanding childhood ALL biology.
  • Identification of key genomic lesions and epigenetic regulators.
  • Recognition of host factors influencing treatment outcomes.

Conclusions:

  • Continued research into ALL biology is vital for further therapeutic advancements.
  • Understanding genomic and epigenetic factors can personalize treatment.
  • Host biology significantly impacts treatment efficacy and toxicity in pediatric ALL.

Related Concept Videos

Disorders of Leukocytes01:27

Disorders of Leukocytes

Leukocyte disorders can lead to either leukopenia, characterized by an abnormally low leukocyte count, or leukocytosis, marked by a very high leukocyte number.
Leukopenia may result from bone marrow disorders, autoimmune diseases, and infectious diseases. For example, conditions such as multiple myeloma and aplastic anemia can impair the bone marrow's ability to produce adequate leukocytes. Similarly, autoimmune diseases like lupus and viral infections such as HIV can prompt the immune...
2.6K
Bone Marrow Sampling and Transplants01:22

Bone Marrow Sampling and Transplants

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.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
2.8K
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
10.4K
Primary Lymphoid Organs01:16

Primary Lymphoid Organs

Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
17.1K
Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
4.3K
Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
4.6K