{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T13:28:39Z","timestamp":1789824519247,"version":"4.0.1"},"reference-count":30,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2019,5,21]],"date-time":"2019-05-21T00:00:00Z","timestamp":1558396800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and Technology","award":["MOST 104-2313-B-005 -006 -MY3 and MOST 107-2320-B-005-014"],"award-info":[{"award-number":["MOST 104-2313-B-005 -006 -MY3 and MOST 107-2320-B-005-014"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Lithospermic acid B (LSB), the major water-soluble ingredient of Salvia miltiorrhiza (Danshen), has been shown to be an active ingredient responsible for the therapeutic effects of this traditional Chinese herb used to treat cardiac disorders. This study aimed to develop an indirect competitive enzyme linked immunosorbent assay (ELISA) for the detection of LSB. Firstly, LSB was chemically conjugated to a modified oil-body protein, lysine-enriched caleosin, recombinantly expressed in Escherichia coli. Antibodies against LSB (Ab-LSB) were successfully generated by immunizing hens with artificial oil bodies constituted with the LSB-conjugated caleosin. Western blotting showed that Ab-LSB specifically recognized LSB, but not the carrier protein, lysine-enriched caleosin. To detect LSB via indirect competitive ELISA, LSB was conjugated with bovine serum albumin (LSB-BSA) and coated on a microplate. The binding between Ab-LSB and LSB-BSA on the microplate was competed dose-dependently in the presence of free LSB with a concentration ranging from 5 to 5 \u00d7 104 ng\/mL. The IC50 value was approximately determined to be 120 ng\/mL for LSB regardless of its complex with a metal ion of Na+, K+ or Mg2+.<\/jats:p>","DOI":"10.3390\/molecules24101952","type":"journal-article","created":{"date-parts":[[2019,5,21]],"date-time":"2019-05-21T10:52:51Z","timestamp":1558435971000},"page":"1952","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Development of Indirect Competitive ELISA for Lithospermic Acid B of Salvia miltiorrhiza with Its Specific Antibodies Generated via Artificial Oil Bodies"],"prefix":"10.3390","volume":"24","author":[{"given":"Yu-En","family":"Shih","sequence":"first","affiliation":[{"name":"Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao-Hsiang","family":"Chen","sequence":"additional","affiliation":[{"name":"Ko Da Pharmaceutical Co. Ltd., Taoyuan 324, Taiwan"},{"name":"Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei 110, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nan-Hei","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Pharmaceutical Technology, Yuanpei University of Medical Technology, Hsinchu 300, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4218-6363","authenticated-orcid":false,"given":"Jason T.C.","family":"Tzen","sequence":"additional","affiliation":[{"name":"Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,5,21]]},"reference":[{"key":"ref_1","first-page":"2813","article-title":"Salvia miltiorrhiza: Chemical and pharmacological review of a medicinal plant","volume":"4","author":"Wang","year":"2010","journal-title":"J. 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