Nucleic Acids Research, 1980, Vol. 8, No. 12 2823-2834
© 1980
Articles |
Procollagen mRNA metabolism during the fibroblast cell cycle and its synthesis in transformed cells
Department of Biochemistry, University of Cape Town Private Bag, Rondebosch 7700, Republic of South Africa
*To whom correspondence should be addressed
Received April 10, 1980. Procollagen mRNA was isolated from mouse eabryos and used for the synthesis of a highly labelled cDVA probe complementary to collagen mRNA. This probe was used for the investigation of procollagen mRNA metabolism during the cell cycle of 3T6 mouse ethryo fibroblasts in culture. Titration hybridization experiments revealed that procollagen mRNA was present throughout the cell cycle following stimulation of confluent monolayers. Procollagen mRNA levels of sparse cultures appeared similar to those of unstimulated monolayers. The fluctuating levels of collagen synthesis during the cell cycle can be ascribed to changes in the amount of collagen mRNA present. In mouse sarcoma virus transformed 3T3 cells only 2030% of the amount of procollagen mRNA in 3T3 cells is present indicating that the decline in collagen synthesis is due to mRNA availability.