Early Phenotypical Changes Induced By Transfer Of Human Fecal Microbiota from Colorectal Cancer Patients To Germ-Free Mice

Julien Tap (1) , Aurélien Amiot (1, 2) , Véronique Jarrousse (3) , Sandra Guilmeau (3) , Jeanne Tran Vannhieu (1) , Philippe Langella (4) , Thierry Pedron (5) , Jean-Pierre Furet (4) , André Bado (3) , Iradj Sobhani (1, 3)

1 EC2M3 - Early detection of Colon Cancer using Molecular Markers and Microbiota (EA 7375)
2 CHU Henri Mondor [Créteil]
3 CRB3 - Centre de recherche biomédicale Bichat-Beaujon
4 MICALIS - MICrobiologie de l'ALImentation au Service de la Santé
5 Pathogénie microbienne moléculaire

Feces from patients with colorectal cancer (HK) and healthy individuals (HN) were inoculated orally into germ-free mice under azoxymethane (AOM) or vehicle. The fecal microbiota remained stable in germ-free (GF) mice up to 42 days after fecal transplantation. Numbers of aberrant crypt foci, levels of MATH1, and HES1 mRNAs in the colonic mucosa, were higher in HK-GF than in HN-GF mice with highest levels observed in HK-GF mice treated with AOM and significantly associated with higher Bacteroides and lower Coprococcus bacteria in stools. Thus, CRC patients' fecal microbiota can induce early precancerous changes in the colonic mucosa in germ-free mice.

Keywords: Colorectal cancer; Fecal microbiota; Gene expression; Dysbiosis

Domains: Cancer; Microbiology and Parasitology; Immunology

Julien Tap, Aurélien Amiot, Véronique Jarrousse, Sandra Guilmeau, Jeanne Tran Vannhieu, et al.. Early Phenotypical Changes Induced By Transfer Of Human Fecal Microbiota from Colorectal Cancer Patients To Germ-Free Mice. International Journal of Cancer and Oncology, 2017, 4 (1), pp. 1-11. ⟨10.15436/2377-0902.16.1128⟩. ⟨hal-03825702⟩