[1] [1] Sung H, Ferlay J, Siegel RL, et al. Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries[J]. Ca-Cancer J. Clin., 2021, 71(3): 209-249.

[2] [2] Voutilainen M E, Juhola M T. Evaluation of the diagnostic accuracy of gastroscopy to detect gastric tumors: clinicopathological features and prognosis of patients with gastric cancermissed on endoscopy[J]. Eur. J. Gastroen. Hepat., 2005, 17: 1345-1349.

[3] [3] Chen X, Ba Y, Ma L, et al. Characterization of microRNAs in serum: a novel class of biomarkers for diagnosis of cancer and other diseases[J]. Cell Res., 2008, 18(10): 997-1006.

[4] [4] Siniscalco D, Galderisi U, Peluso G, et al. Circulating microRNAs in Cancer: A 5-Year Update with a Focus on Breast and Lung Cancers[J]. Int. J. Mol. Sci., 2024. 25(6): 3140.

[5] [5] Song J N, Bai Z G, Zhang J, et al. Serum microRNA-21 levels are related to tumor size in gastric cancer patients but cannot predict prognosis[J]. Oncol. Lett., 6(6): 1733-1737.

[6] [6] Emami S S, Nekouian R, Akbari A, et al. Evaluation of circulating miR-21 and miR-222 as diagnostic biomarkers for gastric cancer[J]. J. Cancer Res. Ther., 15(1): 115-119.

[7] [7] Hering K, Cialla D, Ackermann K, et al. SERS: a versatile tool in chemical and biochemical diagnostics[J]. Anal. Bioanal. Chem., 2008, 390(1): 113-124.

[8] [8] Pang Y F, Wang C G, Lu L C, et al. Dual-SERS biosensor for one-step detection of microRNAs in exosome and residual plasma of blood samples for diagnosing pancreatic cancer[J]. Biosens. Bioelectron., 2019, 130(1): 204-213.

[9] [9] Yang Y H, Ozsoz M, Liu G D. Gold nanocage-based lateral flow immunoassay for immunoglobulin G[J]. Microchim. Acta, 2017, 184(7): 2023-2029.

[10] [10] Khairullina E, Mosina K, Choueiri R M, et al. An aligned octahedral core in a nanocage: synthesis, plasmonic, and catalytic properties[J]. Nanoscale, 2019, 11(7): 3138-3144.

[11] [11] Zhu X P, Yang Z M, Chen Y Q, et al. Plasmon Modes and Substrate-Induced Fano Dip in Gold Nano-Octahedra[J]. Plasmonics, 10(15): 1013-1021.

[12] [12] Tian X D, Zhang Y. Tunable orientation of two-dimensional assembled Au octahedron superlattices in polymer films as flexible SERS substrates[J]. Nanoscale, 2023, 15(9): 4317-4324.

[13] [13] Dai C, Wang K, Tan M, et al. A LoC-SERS platform based on triple signal amplification for highly sensitive detection of colorectal cancer miRNAs[J]. Anal. Methods-Uk, 2023, 10: 1039.

[14] [14] Alom K M, Kumara G S R, Seo Y J. 22AG G-quadruplex RNA/QnMorpholine-mediated fluorimetric detection of miR-21[J]. Anal. Biochem., 2022, 656: 114879.

[15] [15] Campos R, Shanmugam S T, Daems E, et al. Development of an electrochemiluminescent oligonucleotide-based assay for the quantification of prostate cancer associated miR-141-3p in human serum[J]. Bioelectrochemistry, 2023, 153: 108495.

[16] [16] Treerattrakoon K, Roeksrungruang P, Dharakul T, et al. Detection of a miRNA biomarker for cancer diagnosis using SERS tags and magnetic separation[J]. Anal. Methods-Uk, 2022, 14(20): 1938-1945.