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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fungal Dysbiosis Correlates with the Development of Tumor-Induced Cachexia in Mice

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Jabes, Daniela L. [1] ; de Maria, Yara N. L. F. [1] ; Barbosa, David Aciole [1] ; Santos, Kaltinaitis B. N. H. [1] ; Carvalho, Lucas M. [1] ; Humberto, Ana Carolina [1] ; Alencar, Valquiria C. [1, 2] ; de Oliveira, Regina Costa [1] ; Batista, Jr., Miguel L. [1] ; Menegidio, Fabiano B. [1] ; Nunes, Luiz R. [2]
Total Authors: 11
[1] Univ Mogi Cruzes UMC, Nucleo Integrad Biotecnol, BR-08780911 Sao Paulo - Brazil
[2] Univ Fed ABC UFABC, Ctr Ciencias Nat & Humanas, BR-09606045 Sao Bernardo Do Campo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF FUNGI; v. 6, n. 4 DEC 2020.
Web of Science Citations: 0

Cachexia (CC) is a devastating metabolic syndrome associated with a series of underlying diseases that greatly affects life quality and expectancy among cancer patients. Studies involving mouse models, in which CC was induced through inoculation with tumor cells, originally suggested the existence of a direct correlation between the development of this syndrome and changes in the relative proportions of several bacterial groups present in the digestive tract. However, these analyses have focus solely on the characterization of bacterial dysbiosis, ignoring the possible existence of changes in the relative populations of fungi, during the development of CC. Thus, the present study sought to expand such analyses, by characterizing changes that occur in the gut fungal population (mycobiota) of mice, during the development of cancer-induced cachexia. Our results confirm that cachectic animals, submitted to Lewis lung carcinoma (LLC) transplantation, display significant differences in their gut mycobiota, when compared to healthy controls. Moreover, identification of dysbiotic fungi showed remarkable consistency across successive levels of taxonomic hierarchy. Many of these fungi have also been associated with dysbioses observed in a series of gut inflammatory diseases, such as obesity, colorectal cancer (CRC), myalgic encephalomyelitis (ME) and inflammatory bowel disease (IBD). Nonetheless, the dysbiosis verified in the LLC model of cancer cachexia seems to be unique, presenting features observed in both obesity (reduced proportion of Mucoromycota) and CRC/ME/IBD (increased proportions of Sordariomycetes, Saccharomycetaceae and Malassezia). One species of Mucoromycota (Rhyzopus oryzae) stands out as a promising probiotic candidate in adjuvant therapies, aimed at treating and/or preventing the development of CC. (AU)

FAPESP's process: 17/08112-3 - Composition and influence of the intestinal microbiome in mice, during the process of cachexia development, induced by transplantation of Lewis lung carcinoma (LLC) cells
Grantee:Daniela Leite Jabes
Support type: Regular Research Grants
FAPESP's process: 17/13197-8 - Characterization of promoter elements responsive to the quorum sensing (QS) auto-inducer 2 (AI-2) in Zymomonas mobilis
Grantee:Luiz Roberto Nunes
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants