[Growth of human tumor transplanted into nude mice with various genetic backgrounds].
Nude mice with different genetic backgrounds were used for the experiment to evaluate the growth of human and murine tumors in the different hosts. Twelve human tumors including 5 gastric carcinomas (St-4, St-10, St-15, St-40, KS-1), 2 colon carcinomas (Co-3, Exp-42), 1 breast carcinoma (MX-1), 1 bile duct carcinoma (Ch-1), 1 hepatocellular hepatoma (Li-4) and 2 hemangiosarcomas (LC-27-R, LC-27-UR), and one murine tumor spontaneously arisen from C3H/HeN nu/+ mouse were transplanted into the subcutaneous tissue of nude mice with genetic backgrounds of BALB/cA, DDD and ICR (CD-1). BALB/cA-nu was originated from the Central Institute for Experimental Animals, DDD-nu was supplied from the Institute of Medical Science, University of Tokyo and ICR (CD-1)-nu was supplied from Charles River Co., Ltd. Tumors were measured by the width (W) and length (L) three times a week by the same person. The tumor volume (V) was estimated by the formula V = W2 X L/2. Tumor doubling time (Td) during the exponential growth phase was compared between the nude mice with different genetic backgrounds. It was found that Td of MX-1 in DDD-nu mice and Td of St-40 and Exp-42 in BALB/cA-nu mice were shortened in comparison with those of tumors transplanted into nude mice with the other strains. However, no statistically significant differences were observed when t-test of matched pairs and coefficients of correlation were applied to compare Td in the other kinds of nude mice. Nude mice with genetic backgrounds of DDD and ICR (CD-1) were thought to be also useful for various kinds of therapeutic experiments in human tumor xenografts/nude mice system.
D000230:Adenocarcinoma / Q000473:pathology; D000818:Animals; D002455:Cell Division; D003110:Colonic Neoplasms / Q000473:pathology; D006394:Hemangiosarcoma / Q000473:pathology; D006801:Humans; D008114:Liver Neoplasms, Experimental / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C / Q000235:genetics; D008813:Mice, Inbred ICR / Q000235:genetics; D008815:Mice, Inbred Strains / Q000235:genetics; D008819:Mice, Nude / Q000235:genetics*; D009368:Neoplasm Transplantation; D009374:Neoplasms, Experimental / Q000473:pathology*; D012513:Sarcoma, Experimental / Q000473:pathology; D013274:Stomach Neoplasms / Q000473:pathology