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Grassi S, Guerrini F, Ciabatti E, Puccetti R, Salehzadeh S, Metelli MR, Di Vita A, Domenichini C, Caracciolo F, Orciuolo E, Pelosini M, Mazzantini E, Rossi P, Mazziotta F, Petrini M, Galimberti S. Digital Droplet PCR is a Specific and Sensitive Tool for Detecting IDH2 Mutations in Acute Myeloid LeuKemia Patients. Cancers (Basel) 2020; 12:cancers12071738. [PMID: 32629801 PMCID: PMC7407265 DOI: 10.3390/cancers12071738] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/24/2020] [Accepted: 06/28/2020] [Indexed: 12/19/2022] Open
Abstract
Isocitrate dehydrogenase 1 and 2 (IDH1 and IDH2) interfere with cellular metabolism contributing to oncogenesis. Mutations of IDH2 at R140 and R172 residues are observed in 20% of acute myeloid leukemias (AML), and the availability of the IDH2 inhibitor Enasidenib made IDH2 mutational screening a clinical need. The aim of this study was to set a new quantitative polymerase chain reaction (PCR) technique, the drop-off digital droplet PCR (drop-off ddPCR), as a sensitive and accurate tool for detecting IDH2 mutations. With this technique we tested 60 AML patients. Sanger sequencing identified 8/60 (13.5%) mutated cases, while ddPCR and the amplification refractory mutation system (ARMS) PCR, used as a reference technique, identified mutations in 13/60 (21.6%) cases. When the outcome of IDH2-mutated was compared to that of wild-type patients, no significant difference in terms of quality of response, overall survival, or progression-free survival was observed. Finally, we monitored IDH2 mutations during follow-up in nine cases, finding that IDH2 can be considered a valid marker of minimal residual disease (MRD) in 2/3 of our patients. In conclusion, a rapid screening of IDH2 mutations is now a clinical need well satisfied by ddPCR, but the role of IDH2 as a marker for MRD still remains a matter of debate.
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Affiliation(s)
- Susanna Grassi
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
- Correspondence:
| | - Francesca Guerrini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
| | - Elena Ciabatti
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
| | - Riccardo Puccetti
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
| | - Serena Salehzadeh
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
| | - Maria Rita Metelli
- Hematology, Azienda Ospedaliero Universitaria Pisana (AOUP), 56126 Pisa, Italy; (M.R.M.); (A.D.V.); (C.D.); (F.C.); (E.O.); (M.P.)
| | - Alessia Di Vita
- Hematology, Azienda Ospedaliero Universitaria Pisana (AOUP), 56126 Pisa, Italy; (M.R.M.); (A.D.V.); (C.D.); (F.C.); (E.O.); (M.P.)
| | - Cristiana Domenichini
- Hematology, Azienda Ospedaliero Universitaria Pisana (AOUP), 56126 Pisa, Italy; (M.R.M.); (A.D.V.); (C.D.); (F.C.); (E.O.); (M.P.)
| | - Francesco Caracciolo
- Hematology, Azienda Ospedaliero Universitaria Pisana (AOUP), 56126 Pisa, Italy; (M.R.M.); (A.D.V.); (C.D.); (F.C.); (E.O.); (M.P.)
| | - Enrico Orciuolo
- Hematology, Azienda Ospedaliero Universitaria Pisana (AOUP), 56126 Pisa, Italy; (M.R.M.); (A.D.V.); (C.D.); (F.C.); (E.O.); (M.P.)
| | - Matteo Pelosini
- Hematology, Azienda Ospedaliero Universitaria Pisana (AOUP), 56126 Pisa, Italy; (M.R.M.); (A.D.V.); (C.D.); (F.C.); (E.O.); (M.P.)
| | - Elisa Mazzantini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
| | - Pietro Rossi
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
| | - Francesco Mazziotta
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Mario Petrini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
| | - Sara Galimberti
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.G.); (E.C.); (R.P.); (S.S.); (E.M.); (P.R.); (F.M.); (M.P.); (S.G.)
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Zhao C, Xie S, Wu H, Luan Y, Hu S, Ni J, Lin R, Zhao S, Zhang D, Li X. Quantification of allelic differential expression using a simple Fluorescence primer PCR-RFLP-based method. Sci Rep 2019; 9:6334. [PMID: 31004110 PMCID: PMC6474871 DOI: 10.1038/s41598-019-42815-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 03/29/2019] [Indexed: 12/04/2022] Open
Abstract
Allelic differential expression (ADE) is common in diploid organisms, and is often the key reason for specific phenotype variations. Thus, ADE detection is important for identification of major genes and causal mutations. To date, sensitive and simple methods to detect ADE are still lacking. In this study, we have developed an accurate, simple, and sensitive method, named fluorescence primer PCR-RFLP quantitative method (fPCR-RFLP), for ADE analysis. This method involves two rounds of PCR amplification using a pair of primers, one of which is double-labeled with an overhang 6-FAM. The two alleles are then separated by RFLP and quantified by fluorescence density. fPCR-RFLP could precisely distinguish ADE cross a range of 1- to 32-fold differences. Using this method, we verified PLAG1 and KIT, two candidate genes related to growth rate and immune response traits of pigs, to be ADE both at different developmental stages and in different tissues. Our data demonstrates that fPCR-RFLP is an accurate and sensitive method for detecting ADE on both DNA and RNA level. Therefore, this powerful tool provides a way to analyze mutations that cause ADE.
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Affiliation(s)
- Changzhi Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Shengsong Xie
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Hui Wu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Yu Luan
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Suqin Hu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Juan Ni
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Ruiyi Lin
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Shuhong Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Dingxiao Zhang
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China. .,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, P.R. China.
| | - Xinyun Li
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Lab of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, 430070, P.R. China. .,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, P.R. China.
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