{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T05:02:36Z","timestamp":1777870956869,"version":"3.51.4"},"reference-count":135,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2021,11,21]],"date-time":"2021-11-21T00:00:00Z","timestamp":1637452800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["21703199"],"award-info":[{"award-number":["21703199"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["21605129"],"award-info":[{"award-number":["21605129"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Recently, electrochemistry- and photoelectrochemistry-based biosensors have been regarded as powerful tools for trace monitoring of carcinoembryonic antigen (CEA) due to the fact of their intrinsic advantages (e.g., high sensitivity, excellent selectivity, small background, and low cost), which play an important role in early cancer screening and diagnosis and benefit people\u2019s increasing demands for medical and health services. Thus, this mini-review will introduce the current trends in electrochemical and photoelectrochemical biosensors for CEA assay and classify them into two main categories according to the interactions between target and biorecognition elements: immunosensors and aptasensors. Some recent illustrative examples are summarized for interested readers, accompanied by simple descriptions of the related signaling strategies, advanced materials, and detection modes. Finally, the development prospects and challenges of future electrochemical and photoelectrochemical biosensors are considered.<\/jats:p>","DOI":"10.3390\/s21227742","type":"journal-article","created":{"date-parts":[[2021,11,21]],"date-time":"2021-11-21T21:00:50Z","timestamp":1637528450000},"page":"7742","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Electrochemistry\/Photoelectrochemistry-Based Immunosensing and Aptasensing of Carcinoembryonic Antigen"],"prefix":"10.3390","volume":"21","author":[{"given":"Jingjing","family":"Jiang","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jili","family":"Xia","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7936-5875","authenticated-orcid":false,"given":"Yang","family":"Zang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guowang","family":"Diao","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"115609","DOI":"10.1016\/j.trac.2019.07.020","article-title":"Recent advances on the DNA-based electrochemical biosensing of cancer biomarkers: Analytical approach","volume":"119","author":"Sadighbayan","year":"2019","journal-title":"Trends Anal. 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