ISSN:
1432-0827
Keywords:
Chondrosarcoma
;
Nude mice
;
Hybridization
;
Collagen
;
mRNAs
;
Transplanted tumor
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
,
Physics
Notes:
Abstract We have succeeded in transplanting human osteogenic sarcoma into nude mice. Morphologically, the transplanted tumor is chondrosarcoma and manifests calcification, but not ossification. This tumor is thought to be an excellent model for studying the process of morbid endochondral calcification. In this study, we have used in situ hybridization to examine expression of collagen type I, II, and III mRNAs in this tumor. In situ hybridization was carried out using biotinylated DNA probes. Hybridized probes were detected using a streptavidin-biotin-alkaline phosphatease reagent. The results showed that collagen type I and II mRNAs were produced by cells of the transplanted tumor. Collagen type I mRNA was chiefly localized in the marginal region of the tumor. Collagen type II mRNA, which was predominantly found in the premineralized region of the transplanted tumor, gradually decreased toward the mineralized region. Collagen type III mRNA was not expressed in the transplanted tumor. These results suggest that the character of progenitor chondrogenic cells might be transferred to the transplanted tumor, and that the tumor cells may change the expression of collagen genes with the differentiation or maturation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00334335
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