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Wang L, Yi D, Geng Y, Duan T, Tong Z, Chen S, Ning Z, Du Y, Hong X, Li X. Ultrasensitive deafness gene DNA hybridization detection employing a fiber optic Mach-Zehnder interferometer: Enabled by a black phosphorus nanointerface. Biosens Bioelectron 2023; 222:114952. [PMID: 36455374 DOI: 10.1016/j.bios.2022.114952] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022]
Abstract
The rapid and efficient detection of deafness gene DNA plays an important role in the clinical diagnosis of deafness diseases. This study demonstrates the ultrasensitive detection of complementary DNA (cDNA) by employing a nanointerface-sensitized fiber optic biosensor. The sensor consists of SMF-TNCF-MMF-SMF (abbreviated as STMS) structure with lateral offset. Besides, it is functionalized with a nanointerface of black phosphorus (BP) to enhance the light-matter interaction and eventually improve the sensing performances. Relying on this nanointerface-sensitized sensor, we successfully realize the in-situ detection of cDNA at concentrations ranging from 1 pM to 1 μM, with a sensitivity of 0.719 nm/lgM. The limit of detection (LOD) is as low as 0.24 pM, which is at least two orders of magnitude lower than those of existing methods. The sensor exhibits the advantages of simple operation, fast response, label-free measurement, excellent repeatability, and high selectivity. Our contribution suggests a convenient approach for deafness gene DNA detection and can be extended for general ultra-low concentration DNA detection applications.
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Affiliation(s)
- Lina Wang
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Duo Yi
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Youfu Geng
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China.
| | - Tingting Duan
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Zhifeng Tong
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Shaolan Chen
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Zhiyao Ning
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Yu Du
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Xueming Hong
- College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen, 518060, PR China
| | - Xuejin Li
- School of Science and Engineering, Chinese University of Hong Kong, Shenzhen, 518172, PR China.
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Cui Y, He DJ. Mitochondrial tRNAIle A4317G mutation may be associated with hearing impairment in a Han Chinese family. Mol Med Rep 2018; 18:5159-5165. [PMID: 30272361 DOI: 10.3892/mmr.2018.9519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 07/31/2018] [Indexed: 11/05/2022] Open
Abstract
Mutations in the mitochondrial genome have been identified to be associated with hearing loss. The aim of the present study was to investigate the role of mitochondrial DNA (mtDNA) variants in a Chinese family with hearing loss. Polymerase chain reaction (PCR)‑Sanger sequencing was used to screen the mtDNA variants and nuclear genes [gap junction protein β2 (GJB2) and transfer (t)RNA 5‑methylaminomethyle‑2‑thiouridylate methyltransferase (TRMU)]; in addition, the mtDNA copy number was determined by quantitative PCR. The present study characterized the molecular features of a Chinese family with maternally‑inherited hearing loss and identified mtDNA A1555G and tRNAIle A4317G mutations. The A4317G mutation was localized at the TΨC arm of tRNAIle (position 59) and created a novel base‑pairing (G59‑C54), which may alter the secondary structure of the tRNA. In addition, patients carrying the A4317G mutation exhibited a lower mtDNA copy number compared with the controls, suggesting that this mutation may cause mitochondrial dysfunction that is responsible for the deafness. However, no functional variants in the GJB2 and TRMU genes were detected. mtDNA A1555G and A4317G mutations may contribute to the clinical manifestation of hearing loss in this family.
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Affiliation(s)
- Yong Cui
- Department of Otolaryngology, The PLA 254 Hospital, Tianjin 300142, P.R. China
| | - Duan-Jun He
- Department of Otolaryngology, The PLA 254 Hospital, Tianjin 300142, P.R. China
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Shi X, Zhang Y, Qiu S, Zhuang W, Yuan N, Sun T, Gao J, Qiao Y, Liu K. A Novel GJB2 compound heterozygous mutation c.257C>G (p.T86R)/c.176del16 (p.G59A fs*18) causes sensorineural hearing loss in a Chinese family. J Clin Lab Anal 2018; 32:e22444. [PMID: 29665173 DOI: 10.1002/jcla.22444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/07/2018] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVE To investigate whether a novel compound heterozygous mutations c.257C>G (p.T86R)/c.176del16 (p.G59A fs*18) in GJB2 result in hearing loss. METHODS Allele-specific PCR-based universal array (ASPUA) screening and sequence analysis were applied to identify these mutations. 3D model was built to perform molecular dynamics (MD) simulation to verify the susceptibility of the mutations. Furthermore, WT- and Mut-GJB2 DNA fragments, containing the mutation of c.257C>G and c.176del16 were respectively cloned and transfected into HEK293 and spiral ganglion neuron cell (SGNs) by lenti-virus delivery system to indicate the subcellular localization of the WT- and Mut-CX26 protein. RESULTS A novel compound heterozygous mutation c.257C>G (p.T86R)/c.176del16 (p.G59A fs*18) in GJB2 was identified in a Chinese family, in which 4 siblings with profound hearing loss, but the fifth child is normal. By ASPUA screening and sequencing, a compound heterozygote mutations in GJB2 c.257C>G (p.T86R)/c.176del16 (p.G59A fs*18) were identified in these four deaf children, each of the mutated GJB2 gene were inherited from their parents. There is no mutation of GJB2 gene identified in the normal child. Besides, the compound heterozygous mutation GJB2 c.257C>G (p.T86R)/c.176del16 (p.G59A fs*18) could lead to the alterations of the subcellular localization of each corresponding mutated CX26 protein and could cause the hearing loss, which has been predicted by MD simulation and verified in both 293T and SGNs cell line. CONCLUSION The c.257C>G (p.T86R)/c.176del16 (p.G59A fs*18) compound mutations in GJB2 detected in this study are novel, and which may be associated with hearing loss in this Chinese family.
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Affiliation(s)
- Xi Shi
- The Institute of Audiology and Balance science of Xuzhou Medical University, Xuzhou, China
- Department of Otolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yan Zhang
- Department of Otolaryngology-Head and neck surgery, The first Hospital of JiLin University, Changchun, China
| | - Shiwei Qiu
- The Institute of Audiology and Balance science of Xuzhou Medical University, Xuzhou, China
| | - Wei Zhuang
- Clinical Hearing Center of Affliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Na Yuan
- The Institute of Audiology and Balance science of Xuzhou Medical University, Xuzhou, China
| | - Tiantian Sun
- The Institute of Audiology and Balance science of Xuzhou Medical University, Xuzhou, China
| | - Jian Gao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China
| | - Yuehua Qiao
- Clinical Hearing Center of Affliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Ke Liu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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