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Agarwal P, Crepps MP, Stahr NA, Kretzschmar WP, Harris HC, Prasad N, Levy SE, Smith BF. Identification of canine circulating miRNAs as tumor biospecific markers using Next-Generation Sequencing and Q-RT-PCR. Biochem Biophys Rep 2021; 28:101106. [PMID: 34458596 PMCID: PMC8379617 DOI: 10.1016/j.bbrep.2021.101106] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 02/07/2023] Open
Abstract
Delay in cancer diagnosis often results in metastasis and an inability to successfully treat the tumor. The use of broadly cancer-specific biomarkers at an early stage may improve cancer treatment and staging. This study has explored circulatory exosomal miRNAs as potential diagnostic biomarkers to identify cancer patients. Secretory exosomal miRNAs were isolated from 13 canine cancer cell lines (lymphoma, mast cell tumor, histiocytic cell line, osteosarcoma, melanoma, and breast tumor) and were sequenced by Next-Generation sequencing (NGS). We have identified 6 miRNAs (cfa-miR-9, -1841, -1306, -345, -132, and -26b) by NGS that were elevated in all cancer cell types. The miRNAs identified by NGS were then examined by Q-RT-PCR. The PCR data demonstrated similar expression patterns to those seen with NGS but provided fold differences that were much lower than those seen for NGS. Cfa-miR-9 was found to be the most consistently elevated miRNA in NGS and PCR, making it the most likely miRNA to prove diagnostic. In this study, we have demonstrated that it is possible to identify exosomal miRNAs with elevated secretion across multiple tumor types that could be used as circulatory diagnostic biomarkers for liquid biopsy in the future.
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Affiliation(s)
- Payal Agarwal
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, USA
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, USA
| | - Melissa P. Crepps
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, USA
| | - Natalie A. Stahr
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, USA
| | - Will P. Kretzschmar
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, USA
| | - Hannah C. Harris
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, USA
| | - Nripesh Prasad
- HudsonAlpha Discovery Life Science, Huntsville, AL 35806, USA
| | - Shawn E. Levy
- HudsonAlpha Discovery Life Science, Huntsville, AL 35806, USA
| | - Bruce F. Smith
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, USA
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, USA
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Gong P, Li X, Wu W, Cao L, Zhao P, Li X, Ren B, Li J, Zhang X. A Novel MicroRNA From the Translated Region of the Giardiavirus rdrp Gene Governs Virus Copy Number in Giardia duodenalis. Front Microbiol 2020; 11:569412. [PMID: 33329426 PMCID: PMC7719678 DOI: 10.3389/fmicb.2020.569412] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 10/21/2020] [Indexed: 12/14/2022] Open
Abstract
Giardia duodenalis is an important zoonotic parasite that can cause human and animal diarrhea. Giardiavirus (GLV) is a double-stranded RNA virus in Totiviridae family, which specifically infects trophozoites of the primitive protozoan parasite G. duodenalis. However, the GLV infectious and the pathogenicity of the G. duodenalis still remain to be confirmed. The GLV genome is 6,277 bp, which encodes two proteins (Gag and Gag-Pol). The expression of Gag-Pol protein is regulated by a-1 ribosomal frameshift. In this report, we identified a novel microRNA (GLV miRNA1) from the GLV. Split ligation northern results showed that GLV miRNA1 is a special expression product of GLV, and the precursor was also identified by primer extension. Antisense sequence of the GLV miRNA1 could increase the copy number of virus in G. duodenalis. It suggests that GLV miRNA1 governs the copy number of Giardiavirus in G. duodenalis. Most importantly, the GLV miRNA1 lies at the translated region of the rdrp gene, which is the first case that microRNA locates in the translated region of a known protein. It may be implying a novel phenomenon for miRNA biogenesis.
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Affiliation(s)
- Pengtao Gong
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xianhe Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Wei Wu
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Lili Cao
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China.,Jilin Academy of Animal Husbandry and Veterinary Medicine, Changchun, China
| | - Panpan Zhao
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xin Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Baoyan Ren
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jianhua Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xichen Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
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