Cellular and Molecular Response of Macrophages THP-1 during Co-Culture with Inactive Trichophyton rubrum Conidia

Author(s):Show less -

Segura, Gabriela Gonzalez ^[1] ; Cantelli, Bruna Aline ^[1] ; Peronni, Kamila ^[2] ; Sanches, Pablo Rodrigo ^[3] ; Komoto, Tatiana Takahasi ^[1] ; Rizzi, Elen ^[1] ; Beleboni, Rene Oliveira ^{[1, 4]} ; da Silva Junior, Wilson Araujo ^{[3, 5, 6]} ; Martinez-Rossi, Nilce Maria ^[3] ; Marins, Mozart ^{[1, 4]} ; Fachin, Ana Lucia ^{[1, 4]}

Affiliation

^[1] Univ Ribeirao Preto UNAERP, Biotechnol Unit, Av Costabile Romano 2201, BR-14096900 Sao Paulo, SP - Brazil

^[2] Natl Inst Sci & Technol Stem Cell & Cell Therapy, Ctr Cell Based Therapy, Av Bandeirantes 3900, BR-14049900 Ribeirao Preto, SP - Brazil

^[3] Univ Sao Paulo, Ribeirao Preto Med Sch, Dept Genet, Av Bandeirantes 3900, BR-14049900 Ribeirao Preto - Brazil

^[4] Univ Ribeirao Preto UNAERP, Med Sch, Av Costabile Romano 2201, BR-14096900 Ribeirao Preto, SP - Brazil

^[5] Univ Sao Paulo, Ctr Integrat Syst Biol CISBi NAP USP, Ribeirao Preto Med Sch, Dept Genet, Av Bandeirantes 3900, BR-14049900 Sao Paulo, SP - Brazil

^[6] Univ Sao Paulo, Ribeirao Preto Med Sch, Univ Hosp, Ctr Med Genom, Av Bandeirantes 3900, BR-14049900 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF FUNGI; v. 6, n. 4 DEC 2020.
• Web of Science Citations: 0

Abstract

Trichophyton rubrum is causing an increasing number of invasive infections, especially in immunocompromised and diabetic patients. The fungal invasive infectious process is complex and has not yet been fully elucidated. Therefore, this study aimed to understand the cellular and molecular mechanisms during the interaction of macrophages and T. rubrum. For this purpose, we used a co-culture of previously germinated and heat-inactivated T. rubrum conidia placed in contact with human macrophages cell line THP-1 for 24 h. This interaction led to a higher level of release of interleukins IL-6, IL-2, nuclear factor kappa beta (NF-kappa B) and an increase in reactive oxygen species (ROS) production, demonstrating the cellular defense by macrophages against dead fungal elements. Cell viability assays showed that 70% of macrophages remained viable during co-culture. Human microRNA expression is involved in fungal infection and may modulate the immune response. Thus, the macrophage expression profile of microRNAs during co-culture revealed the modulation of 83 microRNAs, with repression of 33 microRNAs and induction of 50 microRNAs. These data were analyzed using bioinformatics analysis programs and the modulation of the expression of some microRNAs was validated by qRT-PCR. In silico analysis showed that the target genes of these microRNAs are related to the inflammatory response, oxidative stress, apoptosis, drug resistance, and cell proliferation. (AU)

• FAPESP's process: 19/10514-8 - Screening of new antifungal molecules and characterization of pathogenicity process of the dermatophyte Trichophyton rubrum
• Grantee: Ana Lucia Fachin Saltoratto
• Support Opportunities: Regular Research Grants
• FAPESP's process: 16/22701-9 - Study of the response to antifungal and fungal-host interaction of T.rubrum dermatophyte using different models of infection
• Grantee: Ana Lucia Fachin Saltoratto
• Support Opportunities: Regular Research Grants