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Updated: Aug 8, 2026
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Pre-clinical Evaluation of Tyrosine Kinase Inhibitors for Treatment of Acute Leukemia
Published on: September 19, 2013
[Adult T-cell leukemia with Ki-1 expression]
1Department of Internal Medicine, Minami Kyushuu Chuo National Hospital.
[Rinsho Ketsueki] the Japanese Journal of Clinical Hematology
|January 1, 1992
Summary
This study identifies a link between Human T-lymphotropic virus type I (HTLV-I) activation and the expression of the Ki-1 antigen in adult T-cell leukemia (ATL) cells. Researchers observed increased Ki-1 antigen on ATL cells following HTLV-I exposure.
Area of Science:
- Hematology
- Oncology
- Virology
Background:
- Adult T-cell leukemia (ATL) is a lymphoproliferative disorder associated with Human T-lymphotropic virus type I (HTLV-I).
- The LSG classification categorizes lymphoma subtypes, including diffuse lymphoma pleomorphic type.
Observation:
- A 64-year-old male presented with fever and edema, diagnosed with diffuse lymphoma pleomorphic type.
- Hematological examination revealed abnormal lymphocytes expressing CD2, CD3, CD4, and CD25, with a positive anti-HTLV-I antibody test.
- ATL cells in blood and lymph nodes expressed CD30 (Ki-1), with increased CD30-positive ATL cells after short-term culture.
Findings:
- The study observed that ATL cells expressed CD30 (Ki-1).
- Short-term culture of ATL cells showed an increase in CD30-positive cells.
- Induction of Ki-1 antigen in cell lines and cultured ATL cells correlated with the appearance of HTLV-I related antigens.
Implications:
- Suggests a relationship between Ki-1 antigen expression and HTLV-I activation in ATL cells.
- Highlights the potential role of HTLV-I in modulating cell surface markers in ATL.
- Provides insights into the pathogenesis and potential therapeutic targets for ATL.
