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A Rapid and Specific Real-Time PCR Assay for the Detection of Clinically Relevant Mucorales Species

Abstract

Infections triggered by filamentous fungi placed in the order Mucorales, phylum Zygomycota, can cause serious harm to immunocompromised patients. Since there is lack of a standardized PCR (polymerase chain reaction) assay for early diagnosis of this fungal infection, this work was aimed to develop a new PCR assay able to detect the presence of Mucorales genera in clinical specimens. Here, we describe a novel diagnostic TaqMan MGB probe assay for precise and rapid detection of the most common clinical species of Mucorales. Zygomycete-specific oligonucleotides were designed to specifically amplify and bind highly conserved sequences of fungal 28S rRNA gene. Additionally, we succeeded in differentiating Mucorales species (i.e., , , , and ) in artificially infected serum samples, suggesting that the quantitative capability of this real-time PCR assay could potentially optimize the diagnosis of mucormycosis.

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References
1.
Hata D, Buckwalter S, Pritt B, Roberts G, Wengenack N . Real-time PCR method for detection of zygomycetes. J Clin Microbiol. 2008; 46(7):2353-8. PMC: 2446880. DOI: 10.1128/JCM.02331-07. View

2.
Kasai M, Harrington S, Francesconi A, Petraitis V, Petraitiene R, Beveridge M . Detection of a molecular biomarker for zygomycetes by quantitative PCR assays of plasma, bronchoalveolar lavage, and lung tissue in a rabbit model of experimental pulmonary zygomycosis. J Clin Microbiol. 2008; 46(11):3690-702. PMC: 2576616. DOI: 10.1128/JCM.00917-08. View

3.
Wehrle-Wieland E, Affolter K, Goldenberger D, Tschudin Sutter S, Halter J, Passweg J . Diagnosis of invasive mold diseases in patients with hematological malignancies using Aspergillus, Mucorales, and panfungal PCR in BAL. Transpl Infect Dis. 2018; 20(5):e12953. DOI: 10.1111/tid.12953. View

4.
Kutyavin I, Afonina I, Mills A, Gorn V, Lukhtanov E, Belousov E . 3'-minor groove binder-DNA probes increase sequence specificity at PCR extension temperatures. Nucleic Acids Res. 1999; 28(2):655-61. PMC: 102528. DOI: 10.1093/nar/28.2.655. View

5.
Gade L, Hurst S, Arunmozhi Balajee S, Lockhart S, Litvintseva A . Detection of mucormycetes and other pathogenic fungi in formalin fixed paraffin embedded and fresh tissues using the extended region of 28S rDNA. Med Mycol. 2016; 55(4):385-395. DOI: 10.1093/mmy/myw083. View