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- Title
A lectin array analysis for wild-type and α-Gal-knockout pig islets versus healthy human islets.
- Authors
Miyagawa, Shuji; Maeda, Akira; Takeishi, Shunsaku; Ueno, Takehisa; Usui, Noriaki; Matsumoto, Shinichi; Okitsu, Teru; Goto, Masafumi; Nagashima, Hiroshi
- Abstract
Purpose: We performed lectin microarray analyses of islets from wild-type (WT) pigs and α1-3galactosyltransferase gene knockout (GKO) pigs and compared the results with the corresponding values for islets from healthy humans. Methods: Islets were isolated from the pancreas. After sonication and centrifugation, the proteins in the supernatant from each islet were labeled with Cy3 and applied to a lectin array. Results: Despite negligible expression of the Gal antigen on the adult pig islets (APIs), GKO-islets showed weaker signals, not only for GS-I-B4 but also for PNA, WFA, PTL-I, and GS-I-A4, than the WT islets, indicating reduced contents of α-linked GalNAc and Galβ1-3GalNAc. In comparing the islets of pigs vs. humans, human islets showed stronger signals for UEA-I, AAL, TJA-II, EEL, WFA, HPA, DBA, SBA and PTL-I, indicating that besides ABO blood type antigens, high levels of fucose and α-linked GalNAc are present. On the other hand, the high mannose form was very rich in the APIs. Conclusion: GKO reduced alpha-linked GalNAc, despite negligible expression of the Gal antigen on WT-API. On the other hand, the high-mannose form was richer in both APIs than in healthy human islets. These results provide useful information for future studies.
- Subjects
LECTINS; MICROARRAY technology; GALACTOSYLTRANSFERASE genetics; ISLANDS of Langerhans; ABO blood group system; LABORATORY swine
- Publication
Surgery Today, 2013, Vol 43, Issue 12, p1439
- ISSN
0941-1291
- Publication type
Article
- DOI
10.1007/s00595-013-0569-6