PMID- 36680742 OWN - NLM STAT- MEDLINE DCOM- 20230202 LR - 20230202 IS - 1899-5276 (Print) IS - 1899-5276 (Linking) VI - 32 IP - 1 DP - 2023 Jan TI - Serological proteome analysis identifies crustacean myosin heavy chain type 1 protein and house dust mite Der p 14 as cross-reacting allergens. PG - 107-112 LID - 10.17219/acem/158773 [doi] AB - BACKGROUND: Allergies to house dust mite (HDM) and to crustaceans are clinically and pathogenically linked. Several homologous allergenic proteins have been identified, among which tropomyosin is the prototype, expressing epitopes endowed with variable levels of immunoglobulin E (IgE) cross-reactivity. Component-resolved diagnosis (CRD) does not allow a thorough characterization of all relevant IgE reactivities to these allergen sources. OBJECTIVES: We studied 1 patient allergic to shrimp with positive skin prick test to HDM and negative scores for IgE to HDM allergen components routinely used in CRD (group 1 and 2 allergens, Der p 23 and tropomyosin). MATERIAL AND METHODS: In order to identify the allergen(s) involved in IgE reactivity, we used serological proteome analysis (SERPA), which utilizes two-dimensional gel electrophoresis (2DE), immunoblotting and mass spectrometry (MS). The identified allergenic proteins were tested with sera from 20 crustacean-allergic patients and 19 grass-allergic patients serving as controls. RESULTS: Der p 14 and myosin heavy chain type 1 (MHC1) were identified as the components recognized by patient's IgE in the proteome of Dermatophagoides pteronyssinus and Penaeus monodon, respectively. The MHC1 protein shows about 30% sequence identity with Der p 14 in specific domains, and cross-reactivity against epitopes shared by the 2 proteins was demonstrated by reduced reactivity to shrimp extract following pre-incubation with Der p 14. Serum IgE from 5 out of 20 patients allergic to crustaceans reacted with MHC1, compared to none among 19 controls (p < 0.05). CONCLUSION: We identified MHC1 as a relevant allergic component in the proteome of Penaeus monodon, the prototypic allergen source used in diagnosis of allergy to crustaceans. Our data demonstrate MHC1 cross-reactivity between MHC1 and Der p 14 from Dermatophagoides pteronyssinus. FAU - Conti, Antonio AU - Conti A AD - Proteome Biochemistry, COSR-Centre for Omics Sciences, IRCCS-San Raffaele Hospital, San Raffaele Scientific Institute, Milan, Italy. FAU - Alqassir, Noor AU - Alqassir N AD - Proteome Biochemistry, COSR-Centre for Omics Sciences, IRCCS-San Raffaele Hospital, San Raffaele Scientific Institute, Milan, Italy. FAU - Breda, Daniela AU - Breda D AD - Laboratory of Cellular and Molecular Allergology, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Scientific Institute, Milan, Italy. FAU - Zanardi, Alan AU - Zanardi A AD - Proteome Biochemistry, COSR-Centre for Omics Sciences, IRCCS-San Raffaele Hospital, San Raffaele Scientific Institute, Milan, Italy. FAU - Alessio, Massimo AU - Alessio M AD - Proteome Biochemistry, COSR-Centre for Omics Sciences, IRCCS-San Raffaele Hospital, San Raffaele Scientific Institute, Milan, Italy. FAU - Burastero, Samuele E AU - Burastero SE AD - Laboratory of Cellular and Molecular Allergology, Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Scientific Institute, Milan, Italy. LA - eng PT - Journal Article PL - Poland TA - Adv Clin Exp Med JT - Advances in clinical and experimental medicine : official organ Wroclaw Medical University JID - 101138582 RN - 0 (Allergens) RN - 0 (Epitopes) RN - 37341-29-0 (Immunoglobulin E) RN - EC 3.6.4.1 (Myosin Heavy Chains) RN - 0 (Proteome) RN - 0 (Tropomyosin) SB - IM MH - Animals MH - Humans MH - *Allergens MH - Epitopes/chemistry MH - *Hypersensitivity MH - Immunoglobulin E MH - Myosin Heavy Chains MH - Proteome MH - Pyroglyphidae MH - Tropomyosin/chemistry MH - Shellfish Hypersensitivity MH - Cross Reactions OTO - NOTNLM OT - Dermatophagoides OT - allergens OT - case report OT - immunoglobulin E OT - proteomics EDAT- 2023/01/22 06:00 MHDA- 2023/02/02 06:00 CRDT- 2023/01/21 11:32 PHST- 2023/01/22 06:00 [pubmed] PHST- 2023/02/02 06:00 [medline] PHST- 2023/01/21 11:32 [entrez] AID - 10.17219/acem/158773 [doi] PST - ppublish SO - Adv Clin Exp Med. 2023 Jan;32(1):107-112. doi: 10.17219/acem/158773.