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Shen C, Wang T, Yang K, Zhong L, Liu B. Ultrasensitive detection of genetic variation based on dual signal amplification assisted by isothermal amplification and cobalt oxyhydroxide nanosheets/quantum dots. Mikrochim Acta 2023; 191:12. [PMID: 38063936 DOI: 10.1007/s00604-023-06097-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023]
Abstract
PML/RARα fusion gene (P/R) is the characteristic signature genetic variation of acute promyelocytic leukemia (APL). Here, by integrating triple-stranded DNA hybridization-triggered strand displacement amplification (tri-HT SDA) and cobalt oxyhydroxide nanosheets/quantum dots (CoOOH/QD)-based amplification, we constructed a novel biosensor of easy-operating, time-saving and high sensitivity for detecting P/R to meet clinical needs. Owing to the specific recognition and efficient amplification of tri-HT SDA as well as impressive anti-interference and considerable amplification of CoOOH/QD, this biosensor demonstrated a wide dynamic range (10 fM to 10 nM) with a low limit of detection (5.50 fM) in P/R detection. Additionally, this biosensor could detect P/R spiked into human serum with good recoveries and relative standard deviation (RSD), thus potentially exhibiting ultrasensitive and specific nuclear acid sequence detection ability in clinical diagnosis owing to combing isothermal amplification and nanomaterials.
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Affiliation(s)
- Chenlan Shen
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, 402160, China
| | - Tong Wang
- Clinical Laboratory of the Fourth People's Hospital of Chengdu, Chengdu, 610036, Sichuan, China
| | - Ke Yang
- Department of Laboratory Medicine, Chengdu Shangjin Nanfu Hospital, Chengdu, 611743, Sichuan, China
| | - Liang Zhong
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Beizhong Liu
- Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing, 402160, China.
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China.
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Wang J, Wu J, Wang Y, Wang Y, Jiang C, Zou M, Jin X, Sun X, Zhang Y, Ma S, Wang G, Zhu X, Lu H, Xu C, Wang W, Li L, Han Y, Cai S, Li H. A DNA Damage Response Related Signature to Predict Prognosis in Patients with Acute Myeloid Leukemia. Cancer Invest 2023; 41:1-13. [PMID: 36629468 DOI: 10.1080/07357907.2023.2167209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/26/2022] [Accepted: 01/08/2023] [Indexed: 01/12/2023]
Abstract
The prognosis of acute myeloid leukemia (AML) is disappointing in most subtypes and varies widely. DNA damage response (DDR) is associated with prognosis and immunotherapy in multiple cancers. Here, we identify a signature of eight DDR-related genes associated with overall survival, which stratifies AML patients into high- and low-risk groups. Patients in low-risk group were more likely to respond to sorafenib. The signature could be an independent prognostic predictor for patients treated with ADE and ADE plus gemtuzumab ozogamicin. Therefore, this DDR prognostic signature might be applied to prognostic stratification and treatment selection in AML patients, which warrants further studies.
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Affiliation(s)
- Jun Wang
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Jiafei Wu
- School of Clinical Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yijing Wang
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Yu Wang
- Department of Hematology, Dong Li Hospital, Chengdu, China
| | - Chuanyan Jiang
- Department of Hematology, Chengdu Second People's Hospital, Chengdu, China
| | - Mengying Zou
- Department of Hematology, Chengdu BOE Hospital, Chengdu, China
| | | | | | - Yu Zhang
- Burning Rock Biotech, Guangzhou, China
| | - Sijia Ma
- Burning Rock Biotech, Guangzhou, China
| | | | - Xin Zhu
- Burning Rock Biotech, Guangzhou, China
| | - Huafei Lu
- Burning Rock Biotech, Guangzhou, China
| | - Chunwei Xu
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, China
| | - Wenxian Wang
- Department of Clinical Trial, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, China
| | - Leo Li
- Burning Rock Biotech, Guangzhou, China
| | | | | | - Hui Li
- Department of Hematology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
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DNA Methylation Malleability and Dysregulation in Cancer Progression: Understanding the Role of PARP1. Biomolecules 2022; 12:biom12030417. [PMID: 35327610 PMCID: PMC8946700 DOI: 10.3390/biom12030417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/28/2022] [Accepted: 03/04/2022] [Indexed: 02/05/2023] Open
Abstract
Mammalian genomic DNA methylation represents a key epigenetic modification and its dynamic regulation that fine-tunes the gene expression of multiple pathways during development. It maintains the gene expression of one generation of cells; particularly, the mitotic inheritance of gene-expression patterns makes it the key governing mechanism of epigenetic change to the next generation of cells. Convincing evidence from recent discoveries suggests that the dynamic regulation of DNA methylation is accomplished by the enzymatic action of TET dioxygenase, which oxidizes the methyl group of cytosine and activates transcription. As a result of aberrant DNA modifications, genes are improperly activated or inhibited in the inappropriate cellular context, contributing to a plethora of inheritable diseases, including cancer. We outline recent advancements in understanding how DNA modifications contribute to tumor suppressor gene silencing or oncogenic-gene stimulation, as well as dysregulation of DNA methylation in cancer progression. In addition, we emphasize the function of PARP1 enzymatic activity or inhibition in the maintenance of DNA methylation dysregulation. In the context of cancer remediation, the impact of DNA methylation and PARP1 pharmacological inhibitors, and their relevance as a combination therapy are highlighted.
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