Related Experiment Video
Updated: Mar 15, 2026

Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells
Published on: February 21, 2018
A B cell growth factor-like activity is secreted by cloned, neoplastic B cells
Abstract:
Supernatants from synchronized clones of neoplastic B cells (BCL1) were found to contain a B cell growth factor (BCGFI)-like activity. The BCGF activity in the BCL1 supernatants (SN) could synergize with EL-4 SN in the late phases of an IL 1-dependent BCGF I assay (days 5 through 8). These SN did not contain any detectable BCGF II, IL, 1, or IL 2 activity. In contrast to EL-4-derived BCGF I, which has a m.w. of approximately 18,000, the BCL1-BCGF activity has a m.w. of approximately 4500. Because the BCGF activity in BCL1 SN fluctuates with cell cycle in synchronized cultures, this BCL1-BCGF may play an auto-stimulatory role in B cell proliferation.
More Related Videos
08:48An In Vitro Dormancy Model of Estrogen-sensitive Breast Cancer in the Bone Marrow: A Tool for Molecular Mechanism Studies and Hypothesis Generation
Published on: June 30, 2015
07:20Ex vivo Expansion of Tumor-reactive T Cells by Means of Bryostatin 1/Ionomycin and the Common Gamma Chain Cytokines Formulation
Published on: January 14, 2011
Related Concept Videos
Mitogens and the Cell Cycle
Role of Hematopoietic Growth Factors
Thrombopoietin (TPO), mainly released by the liver,...
Regulation of Hematopoietic Stem Cells
B Cell Activation and Differentiation
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Abnormal Proliferation