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Related Concept Videos

Disorders of Leukocytes01:27

Disorders of Leukocytes

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Leukocyte disorders can lead to either leukopenia, characterized by an abnormally low leukocyte count, or leukocytosis, marked by a very high leukocyte number.
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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
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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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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Related Experiment Video

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Chromosome Preparation From Cultured Cells
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Genetic abnormalities associated with acute lymphoblastic leukemia.

Takafumi Yokota1, Yuzuru Kanakura1

  • 1Department of Hematology and Oncology, Osaka University Graduate School of Medicine, Suita, Japan.

Cancer Science
|March 19, 2016
PubMed
Summary

Genetic abnormalities in hematopoietic stem cells drive acute lymphoblastic leukemia (ALL) pathogenesis. Identifying subtypes like Philadelphia chromosome-like ALL and IKZF1 mutations improves diagnosis and targeted therapies.

Keywords:
Acute lymphoblastic leukemiaIKAROSPh-like ALLgenetic abnormalitieshematopoietic stem cells

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Area of Science:

  • Hematology
  • Genetics
  • Oncology

Background:

  • Acute lymphoblastic leukemia (ALL) is a common childhood cancer with high adult mortality.
  • Next-generation sequencing reveals genetic abnormalities in hematopoietic stem/progenitor cells as key to ALL.
  • ALL is being reclassified into new subtypes based on these genetic findings.

Purpose of the Study:

  • To explore the genetic underpinnings of ALL pathogenesis.
  • To investigate the role of genetic abnormalities in high-risk ALL subtypes.
  • To identify inherited genetic variations influencing ALL susceptibility.

Main Methods:

  • Utilizing next-generation sequencing and whole-genome sequencing.
  • Analyzing genetic alterations in ALL patients and controls.
  • Focusing on gene mutations, including IKZF1 deletions.

Main Results:

  • Identified Philadelphia chromosome-like B-lineage ALL as a high-risk subtype.
  • Deletion mutations in the IKZF1 gene are linked to aggressive ALL phenotypes and poor treatment response.
  • Discovered inherited genetic variations in lymphoid neoplasm-related genes increasing ALL susceptibility.

Conclusions:

  • Genetic abnormalities are central to ALL pathogenesis and classification.
  • IKZF1 mutations are critical drivers of aggressive disease.
  • Understanding inherited susceptibility can inform future therapeutic strategies.