Proceedings of the National Academy of Sciences of the United States of America 1997-Apr
Obese gene expression at in vivo levels by fat pads derived from s.c. implanted 3T3-F442A preadipocytes.
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3T3-F442A preadipocytes implanted s.c. into athymic mice develop into fat pads that are indistinguishable from normal adipose tissue. Implanted preadipocytes harboring a beta-galactosidase transgene gave rise to fat pads in which almost all adipocytes expressed beta-galactosidase. This finding proved that the implanted 3T3-F442A preadipocytes, rather than endogenous preadipose cells, gave rise to the newly developed "adipose tissue." 3T3-F442A preadipocytes, when differentiated into adipocytes in cell culture, express the obese gene at an unexpectedly low level, i.e.,
