PMID- 11866891 OWN - NLM STAT- MEDLINE DCOM- 20040924 LR - 20160818 IS - 0529-5807 (Print) IS - 0529-5807 (Linking) VI - 29 IP - 1 DP - 2000 Feb TI - [Malignant transformation of mouse embryonic fibroblast induced by mitochondrial DNA fragments]. PG - 39-42 AB - OBJECTIVE: To investigate the malignant transforming effect and mechanism of mitochondrial DNA (mtDNA) fragments. METHODS: Tumorigenicity of mtDNA-transformed mouse embryonic fibroblast (NIH3T3) in nude mice was studied using transgenic techniques. Transformed tumors were detected by pathological examination and hybridization signals of mtDNA probe were analyzed by fluorescence in situ hybridization (FISH) techniques. RESULTS: Hybridization signals were observed on the nuclei of 18% - 20% NIH 3T3 cells 1 week after mtDNA fragments transforming. Tumor from mtDNA-transformed NIH 3T3 cells was developed in all 8 nude mice (8/8) respectively 2 weeks after the transformation. The pathological characteristics of the tumors developed were similar to that of fibrosarcoma. CONCLUSIONS: Auto-integration of mtDNA fragments into nuclear genome is a new factor involved in carcinogenesis. FAU - Hu, Y AU - Hu Y AD - PLA Institute of Respiratory Diseases, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China. floride@online.sh.cn FAU - Qian, G AU - Qian G FAU - Mao, B AU - Mao B FAU - Xiao, T AU - Xiao T FAU - Li, Y AU - Li Y FAU - Cao, S AU - Cao S LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Bing Li Xue Za Zhi JT - Zhonghua bing li xue za zhi = Chinese journal of pathology JID - 0005331 RN - 0 (DNA, Mitochondrial) RN - 0 (Peptide Fragments) SB - IM MH - Animals MH - *Cell Transformation, Neoplastic MH - DNA, Mitochondrial/*genetics/isolation & purification MH - Fibroblasts/*pathology MH - Humans MH - Mice MH - Mice, Inbred BALB C MH - Mice, Nude MH - NIH 3T3 Cells MH - Neoplasm Transplantation MH - Neoplasms, Experimental/genetics/*pathology MH - Peptide Fragments/genetics EDAT- 2002/02/28 10:00 MHDA- 2004/09/25 05:00 CRDT- 2002/02/28 10:00 PHST- 2002/02/28 10:00 [pubmed] PHST- 2004/09/25 05:00 [medline] PHST- 2002/02/28 10:00 [entrez] PST - ppublish SO - Zhonghua Bing Li Xue Za Zhi. 2000 Feb;29(1):39-42.