Premium
The role of glucose in the growth of 9l multicell tumor spheroids
Author(s) -
Li Conan K. N.
Publication year - 1982
Publication title -
cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.052
H-Index - 304
eISSN - 1097-0142
pISSN - 0008-543X
DOI - 10.1002/1097-0142(19821115)50:10<2074::aid-cncr2820501018>3.0.co;2-z
Subject(s) - spheroid , monolayer , cell culture , tumor cells , cell growth , cell , biophysics , growth rate , microbiology and biotechnology , biology , biochemistry , cancer research , genetics , mathematics , geometry
Monolayer‐cultured 9L rat brain tumor cells grew optimally in culture media containing glucose concentrations greater than 0.07 mg/ml, but growth ceased at concentrations lower than this value. Assuming that this glucose concentration defines the proliferating fraction of cells in 9L multicell tumor spheroids, it is possible to simulate spheroid growth based on the intraspheroid glucose distribution derived by the author earlier. An excellent fit to experimental growth data was obtained by assigning the proliferating fraction a growth rate constant equal to 40% of that of monolayer‐cultured cells. This definition is in accord with our observation that the colony‐forming efficiency (CFE) of spheroid‐derived cells is 40% of the CFE of cells maintained in monolayer. This suggests that the role of glucose in 9L cell growth is similar in spheroids and in monolayer culture.