Transforming growth factor-beta 1, -beta 2, and -beta 3 secreted by a human glioblastoma cell line. Identification of small and different forms of large latent complexes.

Abstract excerpt

Transforming growth factor-beta 1 (TGF-beta 1) has been found to occur as latent high molecular weight complexes, with or without an associated component denoted latent TGF-beta 1-binding protein (LTBP). We show here that a human glioblastoma cell line (U-1240 MG) secretes all isoforms of TGF-beta s found in mammalian cells (TGF-beta 1, -beta 2, and -beta 3). Approximately 26% of the secreted TGF-beta is in an...

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