PMID- 17441795 OWN - NLM STAT- MEDLINE DCOM- 20070717 LR - 20220330 IS - 0105-4538 (Print) IS - 1398-9995 (Electronic) IS - 0105-4538 (Linking) VI - 62 IP - 5 DP - 2007 May TI - Isolation and characterization of native Cry j 3 from Japanese cedar (Cryptomeria japonica) pollen. PG - 547-53 AB - BACKGROUND: Japanese cedar (Cryptomeria japonica) pollinosis is the most prevalent allergy in Japan. Recently, the Japanese cedar pollen allergen Cry j 3 was cloned as a homologue of Jun a 3, which is a major allergen from mountain cedar (Juniperus ashei) pollen. However, native Cry j 3 has not been isolated and there are no reports on its allergenic activity. The aims of this study were to isolate native Cry j 3 and assess its immunoglobulin E (IgE)-binding capacity in patients with Japanese cedar pollinosis. METHODS: Native Cry j 3 was purified from Japanese cedar pollen by multidimensional chromatography. We assessed the IgE-binding capacity using sera from patients allergic to Japanese cedar pollen by immunoblot analysis and ELISA. Moreover, we assayed the capacity of Cry j 3 to induce histamine release from the patients' leukocytes. We cloned cDNA corresponding to purified Cry j 3 from a cDNA library of Japanese cedar pollen. RESULTS: We isolated native Cry j 3 as a 27-kDa protein. The IgE-binding frequency of Cry j 3 from the sera of patients allergic to Japanese cedar pollen was estimated as 27% (27/100) by ELISA. Cry j 3 induced the release of histamine from leukocytes. We cloned the cDNA and named it Cry j 3.8. Cry j 3.8 cDNA encoded 225 amino acids and had significant homology with thaumatin-like proteins. CONCLUSIONS: Cry j 3 is a causative allergen in Japanese cedar pollinosis and may play crucial roles in the cross-reactivity with oral allergy syndrome. FAU - Fujimura, T AU - Fujimura T AD - Graduate School of Medicine, Chiba University, Chiba, Japan. FAU - Futamura, N AU - Futamura N FAU - Midoro-Horiuti, T AU - Midoro-Horiuti T FAU - Togawa, A AU - Togawa A FAU - Goldblum, R M AU - Goldblum RM FAU - Yasueda, H AU - Yasueda H FAU - Saito, A AU - Saito A FAU - Shinohara, K AU - Shinohara K FAU - Masuda, K AU - Masuda K FAU - Kurata, K AU - Kurata K FAU - Sakaguchi, M AU - Sakaguchi M LA - eng GR - K08 AI055792/AI/NIAID NIH HHS/United States GR - K08 AI055792-01A1/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - Denmark TA - Allergy JT - Allergy JID - 7804028 RN - 0 (Antigens, Plant) RN - 0 (Cry j 3 allergen, Cryptomeria japonica) RN - 0 (Protein Isoforms) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Amino Acid Sequence MH - Antigens, Plant/immunology/*isolation & purification/metabolism MH - Base Sequence MH - Binding Sites, Antibody MH - Cryptomeria/chemistry/genetics/*immunology MH - Humans MH - Hypersensitivity/immunology/metabolism MH - Immunoglobulin E/biosynthesis/blood MH - Molecular Sequence Data MH - Pollen/chemistry/*immunology MH - Protein Binding/immunology MH - Protein Isoforms/immunology/metabolism PMC - PMC2587458 MID - NIHMS79492 EDAT- 2007/04/20 09:00 MHDA- 2007/07/18 09:00 PMCR- 2008/11/25 CRDT- 2007/04/20 09:00 PHST- 2007/04/20 09:00 [pubmed] PHST- 2007/07/18 09:00 [medline] PHST- 2007/04/20 09:00 [entrez] PHST- 2008/11/25 00:00 [pmc-release] AID - ALL1331 [pii] AID - 10.1111/j.1398-9995.2007.01331.x [doi] PST - ppublish SO - Allergy. 2007 May;62(5):547-53. doi: 10.1111/j.1398-9995.2007.01331.x.