title: Establishment, characteristics, and utilization of a new in vivo-in vitro system.
abstract: Radiotherapy and chemotherapy are two important methods for malignant tumor treatment. To research radiobiological response in therapy, we have established a better experimental method in contrast to the traditional ones such as TCD50, regrowth delay, cell survival curve, etc, all with their limitations. A new mouse tumor in vivo-in vitro system LA795 Vv-Vt has been developed for studies on radiobiology. Such a system could be used to study the in vivo response of a solid tumor by the in vitro cloning assay. For the purpose of increasing the PE in vitro, LA795 Vv-Vt tumor line was purified through culturing the cells as a clonogenic spheroid. The spheroids were then injected into the flank of mouse subcutaneously for tumor growth. The in vivo-in vitro system LA795 Vv-Vt is an excellent model dissecting and analyzing the various factors which affect tumor development and determine the response of tumor to specific agent and regimens.
authors.affiliation: Dept. Radiation Oncology, Cancer Hospital, Beijing, China.
authors.forename: J R
authors.initials: JR
authors.lastname: Sun
authors.forename: Y
authors.initials: Y
authors.lastname: Shen
authors.forename: S R
authors.initials: SR
authors.lastname: Luo
authors.forename: Z N
authors.initials: ZN
authors.lastname: Li
authors.forename: X Z
authors.initials: XZ
authors.lastname: Gu
mesh_terms: D000818:Animals; D002449:Cell Aggregation; D066298:In Vitro Techniques; D051379:Mice; D008954:Models, Biological; D009368:Neoplasm Transplantation; D009374:Neoplasms, Experimental