{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T05:31:37Z","timestamp":1785216697604,"version":"3.55.0"},"reference-count":28,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2010,12,23]],"date-time":"2010-12-23T00:00:00Z","timestamp":1293062400000},"content-version":"vor","delay-in-days":3309,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biotech and App Biochem"],"published-print":{"date-parts":[[2001,12]]},"abstract":"<jats:p>Chemical alteration of red blood cells (RBCs) can induce increased phagocytosis of modified cells by macrophages. In this study we have used different chemical treatments for the modification of the mouse red\u2010blood\u2010cell membrane surface, namely oxidant compounds, such as ascorbate\/Fe<jats:sup>+2<\/jats:sup> and diamide [azodicarboxylic acid bis(dimethylamide)], or Band 3\u2010cross\u2010linking reagents. We monitored the phagocytosis of oxidized or Band 3\u2010cross\u2010linked mouse red blood cells by peritoneal macrophages. The extent of phagocytosis of RBCs is not affected by oxidation with ascorbate\/Fe<jats:sup>3+<\/jats:sup>, but it is increased (up to 10%) by oxidation with 2 mM diamide. Furthermore, phagocytosis is greatly increased (up to 40%) as a result of cross\u2010linking with either of two Band 3 bifunctional reagents [bis(sulphosuccinimidyl) suberate (BS<jats:sup>3<\/jats:sup>) and 3,3\u2032\u2010dithiobis(sulphosuccinimidyl propionate) (DTSSP)]. To evaluate targeting towards macrophages of such modified RBCs for therapeutical purposes, we have determined the phagocytosis of Band 3 carrier RBCs loaded with carbonic anhydrase. In this case phagocytosis is high enough (25%) to deliver the enzyme into macrophages. We have also assayed the influence of serum components and IgG on the efficiency of phagocytosis and discuss the possible phagocytosis mechanisms. In the case of BS<jats:sup>3<\/jats:sup>\u2010cross\u2010linked carrier RBCs, phagocytosis is markedly enhanced (from 12% up to 25%) by serum components. This opens a way for therapeutic application of these carrier RBCs, with special relevance in short\u2010term delivery to cells of the mononuclear phagocytic system.<\/jats:p>","DOI":"10.1042\/ba20010045","type":"journal-article","created":{"date-parts":[[2003,11,26]],"date-time":"2003-11-26T16:21:32Z","timestamp":1069863692000},"page":"143-149","source":"Crossref","is-referenced-by-count":14,"title":["<i>In vitro<\/i> phagocytosis of carrier mouse red blood cells is increased by Band 3 cross\u2010linking or diamide treatment"],"prefix":"10.1002","volume":"34","author":[{"given":"Jos\u00e9 A.","family":"Jord\u00e1n","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"F. Javier","family":"Alvarez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L. 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