PMID- 28692662 OWN - NLM STAT- MEDLINE DCOM- 20170925 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 12 IP - 7 DP - 2017 TI - Potential malignant transformation in the gastric mucosa of immunodeficient mice with persistent Mycoplasma penetrans infection. PG - e0180514 LID - 10.1371/journal.pone.0180514 [doi] LID - e0180514 AB - Mycoplasma infection has been reported in immunocompromised cancer patients; nevertheless, it is not clear if persistent Mycoplasma infection could facilitate the proliferation of cancer cells in immunocompromised organisms. The aim of this study was to examine the relationship between persistent Mycoplasma infection and malignant transformation in an immunodeficient host model. Immunodeficient mouse model was established using cyclophosphamide and mice gastric mucosal cells were infected with Mycoplasma penetrans (Mpe). After 18 weeks, mice were sacrificed and gastric mucosal Mpe infected cells were identified by fluorescence in situ hybridization (FISH). Moreover, pathological and ultrastructural changes in mice gastric mucosa were evaluated and the expression of multiple proto-oncogenes was examined by Western blot. Our data show that Mpe infection was detected in the blood of immunodeficient mice and Mpe persistent infection in mice gastric mucosa was confirmed by FISH. There were pathological and ultrastructural malignant transformation occurred in the gastric mucosa of infected mice compared to control mice. Mpe infected mice showed lower expression of p53 and p21 and higher H-ras expression compared to the control group. Moreover, expression of NF-kappaB p65 subunit increased in Mpe infected mice, similar to the TNF-alpha expression. Bax expression in gastric mucosa of Mpe infected mice was lower while Bcl-2 expression was higher than in the uninfected control group. Collectively these data demonstrate that persistent Mpe infection is associated with aberrant expression of multiple proto-oncogenes in gastric mucosa of immunodeficient mice which potentially facilitate the malignant transformation. FAU - Cao, Shuyan AU - Cao S AD - The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China. FAU - Shen, Dandan AU - Shen D AD - Department of Clinical Laboratory, Shanghai Tenth People's Hospital, Shanghai, China. FAU - Wang, Yadong AU - Wang Y AD - Department of Emergency, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China. FAU - Li, Linxi AU - Li L AD - The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China. FAU - Zhou, Liping AU - Zhou L AD - Department of Laboratory Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China. FAU - Wang, Yuxue AU - Wang Y AUID- ORCID: 0000-0003-2756-9494 AD - Department of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei, China. LA - eng PT - Journal Article PT - Retracted Publication DEP - 20170710 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Cyclin-Dependent Kinase Inhibitor p21) RN - 0 (NF-kappa B) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Tumor Suppressor Protein p53) RN - 0 (bcl-2-Associated X Protein) RN - EC 3.6.5.2 (ras Proteins) SB - IM RIN - PLoS One. 2020 Oct 22;15(10):e0241463. PMID: 33091082 MH - Animals MH - Apoptosis MH - Cell Transformation, Neoplastic/*pathology MH - Cyclin-Dependent Kinase Inhibitor p21/metabolism MH - Female MH - Gastric Mucosa/*microbiology/*pathology/ultrastructure MH - Mice, Inbred C57BL MH - Mice, SCID MH - Mycoplasma Infections/diagnosis/*microbiology/*pathology MH - Mycoplasma penetrans/*physiology/ultrastructure MH - NF-kappa B/metabolism MH - Signal Transduction MH - Tumor Necrosis Factor-alpha/metabolism MH - Tumor Suppressor Protein p53/metabolism MH - bcl-2-Associated X Protein/metabolism MH - ras Proteins/metabolism PMC - PMC5503272 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2017/07/12 06:00 MHDA- 2017/09/26 06:00 PMCR- 2017/07/10 CRDT- 2017/07/11 06:00 PHST- 2017/05/03 00:00 [received] PHST- 2017/06/17 00:00 [accepted] PHST- 2017/07/11 06:00 [entrez] PHST- 2017/07/12 06:00 [pubmed] PHST- 2017/09/26 06:00 [medline] PHST- 2017/07/10 00:00 [pmc-release] AID - PONE-D-17-17050 [pii] AID - 10.1371/journal.pone.0180514 [doi] PST - epublish SO - PLoS One. 2017 Jul 10;12(7):e0180514. doi: 10.1371/journal.pone.0180514. eCollection 2017.