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Cutibacterium acnes Induces the Expression of Immunosuppressive Genes in Macrophages and is Associated with an Increase of Regulatory T-Cells in Prostate Cancer

Davidsson, Sabina, 1972- (författare)
Örebro universitet,Institutionen för medicinska vetenskaper,Region Örebro län,Department of Urology,Örebro University
Carlsson, Jessica, 1984- (författare)
Örebro universitet,Institutionen för medicinska vetenskaper,Region Örebro län,Department of Urology,Örebro University
Greenberg, Larry, 1955- (författare)
Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013),Department of Environmental and Life Sciences/Biology, Faculty of Health, Science and Technology, Karlstad University, Karlstad, Sweden
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Wijkander, Jonny, 1955- (författare)
Karlstads universitet,Institutionen för hälsovetenskaper (from 2013),Department of Health Sciences, Faculty of Health, Science and Technology, Karlstad University, Karlstad, Sweden
Söderquist, Bo, 1955- (författare)
Örebro universitet,Institutionen för medicinska vetenskaper,Department of Laboratory Medicine,Örebro University
Erlandsson, Ann, 1968- (författare)
Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013),Department of Urology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden; Department of Environmental and Life Sciences/Biology, Faculty of Health, Science and Technology, Karlstad University, Karlstad, Sweden
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 (creator_code:org_t)
American Society for Microbiology, 2021
2021
Engelska.
Ingår i: Microbiology Spectrum. - : American Society for Microbiology. - 2165-0497. ; 9:3
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Tumors and infectious agents both benefit from an immunosuppressive environment. Cutibacterium acnes (C. acnes) is a bacterium in the normal skin microbiota, which has the ability to survive intracellularly in macrophages and is significantly more common in prostate cancer tissue compared with normal prostate tissue. This study investigated if prostate cancer tissue culture positive for C. acnes has a higher infiltration of regulatory T-cells (Tregs) and if macrophages stimulated with C. acnes induced the expression of immunosuppressive genes that could be linked to an increase of Tregs in prostate cancer. Real-time PCR and enzyme-linked immunosorbent spot assay (ELISA) were used to examine the expression of immunosuppressive genes in human macrophages stimulated in vitro with C. acnes, and associations between the presence of C. acnes and infiltration of Tregs were investigated by statistically analyzing data generated in two previous studies. The in vitro results demonstrated that macrophages stimulated with C. acnes significantly increased their expression of PD-L1, CCL17, and CCL18 mRNA and protein (p ,0.05). In the cohort, Tregs in tumor stroma and tumor epithelia were positively associated with the presence of C. acnes (P = 0.0004 and P = 0.046, respectively). Since the macrophages stimulated with C. acnes in vitro increased the expression of immunosuppressive genes, and prostate cancer patients with prostatic C. acnes infection had higher infiltration of Tregs than their noninfected counterparts, we suggest that C. acnes may contribute to an immunosuppressive tumor environment that is vital for prostate cancer progression. 

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Urologi och njurmedicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Urology and Nephrology (hsv//eng)

Nyckelord

Cancer
Cutibacterium acnes
macrophages
Prostate
Prostate cancer
Regulatory T-cells
Medical Science
Medicinsk vetenskap
Biology
Biologi

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