Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (3): 20250255.doi: 10.7503/cjcu20250255
• Analytical Chemistry • Previous Articles Next Articles
DAI Zhijiang, SHAN Tengteng, LI Yihe, YANG Jianmei(
), ZHAO Yan(
)
Received:2025-09-10
Online:2026-03-10
Published:2025-10-22
Contact:
YANG Jianmei
E-mail:yangatynnu@163.com;zhaooyann@163.com
Supported by:CLC Number:
TrendMD:
DAI Zhijiang, SHAN Tengteng, LI Yihe, YANG Jianmei, ZHAO Yan. Regenerable Electrochemical Biosensor Based on Multi-legged DNA Walker and Host-guest Chemistry for Highly Sensitive Detection of Myocardial Infarction-lelated microRNA[J]. Chem. J. Chinese Universities, 2026, 47(3): 20250255.
| Name | Sequence(5'➝3') |
|---|---|
| H1 | TTGAATTCAGCGATATATTTGGTTCCATTTTACCAGCTGTTTGACAAGAGAGCTGGTAAAATCACCCATGTTACTCTCC |
| H2 | TTGAATTCAGCGATATTTTACCAGCTCTCTTGTCAAACGGAACCAAATATGTTTGACAAGAGCACCCATGTTACTCTCC |
| H3 | TTGAATTCAGCGATCTCTTGTCAAACATATTTGGTTCCAGCTGGTAAAATGGAACCAAATATCACCCATGTTACTCTCC |
| Fc⁃HP⁃Fc | Fc⁃CACCACAGCGAGGGAGAGTAT/rA/GGAATTCAAGACAACGTGGTG⁃Fc |
| miRNA⁃133a⁃5p(miRBase ID: hsa⁃miR⁃133a⁃5p) | AGCUGGUAAAAUGGAACCAAAU |
| miRNA⁃208(miRBase ID: hsa⁃miR⁃208b⁃5p) | AAGCUUUUUGCUCGAAUUAUGU |
| miRNA⁃499(miRBase ID: hsa⁃miR⁃499a⁃5p) | UUAAGACUUGCAGUGAUGUUU |
| miRNA⁃328(miRBase ID: hsa⁃miR⁃328⁃3p) | CUGGCCCUCUCUGCCCUUCCGU |
| miRNA⁃133b(miRBase ID: hsa⁃miR⁃133b) | UUUGGUCCCCUUCAACCAGCUA |
| single⁃base mismatch | AGCUGGUAAAAUGGATCCAAAU |
Table 1 Oligonucleotide sequences used in the experiments
| Name | Sequence(5'➝3') |
|---|---|
| H1 | TTGAATTCAGCGATATATTTGGTTCCATTTTACCAGCTGTTTGACAAGAGAGCTGGTAAAATCACCCATGTTACTCTCC |
| H2 | TTGAATTCAGCGATATTTTACCAGCTCTCTTGTCAAACGGAACCAAATATGTTTGACAAGAGCACCCATGTTACTCTCC |
| H3 | TTGAATTCAGCGATCTCTTGTCAAACATATTTGGTTCCAGCTGGTAAAATGGAACCAAATATCACCCATGTTACTCTCC |
| Fc⁃HP⁃Fc | Fc⁃CACCACAGCGAGGGAGAGTAT/rA/GGAATTCAAGACAACGTGGTG⁃Fc |
| miRNA⁃133a⁃5p(miRBase ID: hsa⁃miR⁃133a⁃5p) | AGCUGGUAAAAUGGAACCAAAU |
| miRNA⁃208(miRBase ID: hsa⁃miR⁃208b⁃5p) | AAGCUUUUUGCUCGAAUUAUGU |
| miRNA⁃499(miRBase ID: hsa⁃miR⁃499a⁃5p) | UUAAGACUUGCAGUGAUGUUU |
| miRNA⁃328(miRBase ID: hsa⁃miR⁃328⁃3p) | CUGGCCCUCUCUGCCCUUCCGU |
| miRNA⁃133b(miRBase ID: hsa⁃miR⁃133b) | UUUGGUCCCCUUCAACCAGCUA |
| single⁃base mismatch | AGCUGGUAAAAUGGATCCAAAU |
| Sample | Added/(pmol·L-1) | Found/(pmol·L-1) | Recovery(%) | RSD(%) |
|---|---|---|---|---|
| 1 | 0.500 | 0.52 | 104 | 2.1 |
| 2 | 10.0 | 9.7 | 97 | 3.9 |
| 3 | 1.00 × 103 | 1.06×103 | 106 | 2.7 |
Table 2 Recovery results of miRNA-133a-5p in diluted serum samples(n=3)*
| Sample | Added/(pmol·L-1) | Found/(pmol·L-1) | Recovery(%) | RSD(%) |
|---|---|---|---|---|
| 1 | 0.500 | 0.52 | 104 | 2.1 |
| 2 | 10.0 | 9.7 | 97 | 3.9 |
| 3 | 1.00 × 103 | 1.06×103 | 106 | 2.7 |
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