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[Suppressive effect of Notch signal activation on apoptosis of multiple myeloma cells]

Xiang-Xu Jia1, Zhuo-Zhuang Lu, Hua Wang

  • 1Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing 100850, China.

Zhongguo Shi Yan Xue Ye Xue Za Zhi
|July 2, 2004
PubMed

Insights

Notch signaling suppresses multiple myeloma cell apoptosis. Activating Notch protected these cancer cells from DMS-induced cell death, suggesting Notch as a potential therapeutic target.

Area of Science:

  • Molecular Biology
  • Cancer Biology
  • Cell Signaling

Context:

  • Bone marrow microenvironments regulate multiple myeloma (MM) cell proliferation and apoptosis.
  • Notch signaling is crucial for cell-cell communication within the microenvironment.
  • The precise role of Notch signaling in MM cell apoptosis remains incompletely understood.

Purpose:

  • To investigate the regulatory effect of Notch signaling on multiple myeloma cell apoptosis induced by N, N-dimethylsphingosine (DMS).

Summary:

  • Multiple myeloma cells express Notch-1 and related molecules (Dll-1, Jagged-1, Deltex-1).
  • Retroviral transfer of the Notch intracellular domain (ICN) activated Notch signaling in MM cells.
  • Activated Notch signaling protected MM cells from DMS-induced apoptosis, as confirmed by cell viability and TUNEL assays.

Impact:

  • Notch signaling suppresses apoptosis in multiple myeloma cells.
  • This finding identifies Notch signaling as a potential novel therapeutic target for multiple myeloma treatment.

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