Imaging and quantification of mRNA molecules at single-cell resolution in the human fungal pathogen Candida albicans
The study of gene expression in fungi has typically relied on measuring transcripts in populations of cells. A major disadvantage of this approach is that the transcripts’ spatial distribution and stochastic variation among individual cells within a clonal population is lost. Traditional fluorescenc...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
7 July 2021
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| In: |
mSphere
Year: 2021, Jahrgang: 6, Heft: 4, Pages: 1-13 |
| ISSN: | 2379-5042 |
| DOI: | 10.1128/mSphere.00411-21 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1128/mSphere.00411-21 Verlag, lizenzpflichtig, Volltext: https://journals.asm.org/doi/10.1128/mSphere.00411-21 
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| Verfasserangaben: | Sergio D. Moreno-Velásquez, J. Christian Pérez |
MARC
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| 520 | |a The study of gene expression in fungi has typically relied on measuring transcripts in populations of cells. A major disadvantage of this approach is that the transcripts’ spatial distribution and stochastic variation among individual cells within a clonal population is lost. Traditional fluorescence in situ hybridization techniques have been of limited use in fungi due to poor specificity and high background signal. Here, we report that in situ hybridization chain reaction (HCR), a method that employs split-initiator probes to trigger signal amplification upon mRNA-probe hybridization, is ideally suited for the imaging and quantification of low-abundance transcripts at single-cell resolution in the fungus Candida albicans. We show that HCR allows the absolute quantification of transcripts within a cell by microscopy as well as their relative quantification by flow cytometry. mRNA imaging also revealed the subcellular localization of specific transcripts. Furthermore, we establish that HCR is amenable to multiplexing by visualizing different transcripts in the same cell. Finally, we combine HCR with immunostaining to image specific mRNAs and proteins simultaneously within a single C. albicans cell. The fungus is a major pathogen in humans where it can colonize and invade mucosal surfaces and most internal organs. The technical development that we introduce, therefore, paves the way to study the patterns of expression of pathogenesis-associated C. albicans genes in infected organs at single-cell resolution. | ||
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