1
|
Shimizu M, Kuroda Y, Uchida M, Takada S, Kamada H, Takahashi D, Nakajima F, Miyata S, Igarashi S, Satake M. A new HLA-C allele with an alternative splice site in exon 3: HLA-C*03:23N. HLA 2020; 95:555-560. [PMID: 32034867 DOI: 10.1111/tan.13832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/25/2019] [Accepted: 02/05/2020] [Indexed: 11/26/2022]
Abstract
We identified a probable new null HLA-C allele, C*03:23N, which originated from C*03:04:01:02, but does not react with Cw3 antibodies. This allele was identified by sequence analysis, which indicated that a single G-to-A substitution at position 406 in exon 3 created a null allele under a new mechanism: the mutation changes the position of the intron 2-exon 3 splice site to be further into exon 3, leading to a frameshift and a premature stop codon. Sequence analysis of cDNA confirmed the existence of the causative alternative acceptor splice site and the resultant deletion of 64 nucleotides in exon 3. Analysis of 220 blood or bone marrow donors in Japan with C*03:23N demonstrated that Japanese HLA-C*03:23N is on the haplotype A*26:01∼C*03:23N∼B*40:02∼DRB1*09:01.
Collapse
Affiliation(s)
- Marie Shimizu
- Central Blood Institute, Japanese Red Cross Society, Tokyo, Japan
| | - Yukari Kuroda
- Kyushu Block Blood Center, Japanese Red Cross Society, Fukuoka, Japan
| | - Miyuki Uchida
- Central Blood Institute, Japanese Red Cross Society, Tokyo, Japan
| | | | - Hiromi Kamada
- Central Blood Institute, Japanese Red Cross Society, Tokyo, Japan
| | | | - Fumiaki Nakajima
- Central Blood Institute, Japanese Red Cross Society, Tokyo, Japan
| | - Shigeki Miyata
- Central Blood Institute, Japanese Red Cross Society, Tokyo, Japan
| | - Shigeru Igarashi
- Central Blood Institute, Japanese Red Cross Society, Tokyo, Japan
| | - Masahiro Satake
- Central Blood Institute, Japanese Red Cross Society, Tokyo, Japan
| |
Collapse
|
2
|
Fusco C, Cervelli C, Dal Mas A, Canossi A, Azzarone R, Valdez O, Auriemma L, Madalese D, Maisto G, Toriello M, Penta de Vera d'Aragona R, Scimitarra M, Scarnecchia MA, Battistoni C, Fracassi D, Papola F. Expression profile of HLA-B*38:55Q allele. HLA 2020; 95:449-456. [PMID: 31891446 DOI: 10.1111/tan.13790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/24/2019] [Accepted: 12/30/2019] [Indexed: 11/29/2022]
Abstract
The identification of null or questionably expressed HLA allelic variants is a major issue in HLA diagnostics, because the mistyping of the aberrant expression of such alleles can have a major impact on the outcome of both hematopoietic stem cell transplantation (HSCT) and solid organ transplants. It is debated how questionable (Q) alleles, because of their unknown expression profile, should be considered in an allogenic HSCT setting. The HLA-B*38:55Q allele was detected as an HLA-B blank specificity; DNA sequencing identified a single polymorphism at position 373 in exon 3 (TGC > CGC), which results in the replacement of cysteine 101 with an arginine in the HLA-B heavy chain, thus, impairing disulfide bridge formation in the alpha-2 domain, essential for the normal expression of the HLA molecules. In order to determine the RNA and protein expression profile of this allelic variant, we analyzed antigenic expression at different levels, transcriptional and transductional, using a combination of cellular methods, such as serological testing and flow cytometric analysis, polymerase chain reaction (PCR) sequence-specific primer (SSP) cDNA group-specific amplification and immunocytochemical assay, demonstrating the prevalent cytoplasmatic distribution of the HLA-B*38:55Q protein. Our findings suggest that in matching process the HLA-B*38:55Q allele needs to be considered as a low expressed allele, able to elicit an allogenic T-cell response in vivo and impair the transplant outcome.
Collapse
Affiliation(s)
- Caterina Fusco
- SSD Cryopreservation and Ba.S.C.O, Oncohaematology Department, A.O.R.N. Santobono-Pausilipon of Napoli, Naples, Italy
| | - Carla Cervelli
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Antonella Dal Mas
- UOC Pathological Anatomy, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Angelica Canossi
- CNR Institute of Translational Pharmacology, L'Aquila, L'Aquila, Italy
| | - Raffaella Azzarone
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Olaida Valdez
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Laura Auriemma
- SSD Cryopreservation and Ba.S.C.O, Oncohaematology Department, A.O.R.N. Santobono-Pausilipon of Napoli, Naples, Italy
| | - Donato Madalese
- SSD Cryopreservation and Ba.S.C.O, Oncohaematology Department, A.O.R.N. Santobono-Pausilipon of Napoli, Naples, Italy
| | - Giovanna Maisto
- SSD Cryopreservation and Ba.S.C.O, Oncohaematology Department, A.O.R.N. Santobono-Pausilipon of Napoli, Naples, Italy
| | - Mario Toriello
- SSD Cryopreservation and Ba.S.C.O, Oncohaematology Department, A.O.R.N. Santobono-Pausilipon of Napoli, Naples, Italy
| | | | - Maria Scimitarra
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Maria A Scarnecchia
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Carla Battistoni
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Daniela Fracassi
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| | - Franco Papola
- Regional Centre of Immunohaematology and Tissue Typing, S.Salvatore Hospital of L'Aquila, L'Aquila, Italy
| |
Collapse
|
3
|
Shimizu M, Kuroda Y, Nakajima F, Nagai T, Satake M. A novel HLA-C allele, HLA-C*07:02:01:17N, with an alternative splice site. HLA 2018; 92:56-57. [PMID: 29653015 DOI: 10.1111/tan.13267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/02/2018] [Accepted: 04/04/2018] [Indexed: 12/01/2022]
Abstract
We describe the identification of alternatively expressed HLA allele C*07:02:01:17N.
Collapse
Affiliation(s)
- M Shimizu
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
| | - Y Kuroda
- Kyushu Block Blood Center, Japanese Red Cross, Fukuoka, Japan
| | - F Nakajima
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
| | - T Nagai
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
| | - M Satake
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
| |
Collapse
|