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Fujisawa M, Matsushima M, Carreras J, Hirabayashi K, Y Kikuti Y, Ueda T, Kaneko M, Fujimoto R, Sano M, Teramura E, Monma M, Nakae H, Suzuki T, Suzuki H, Nakamura N. Whole-genome copy number and immunohistochemical analyses on surgically resected intracholecystic papillary neoplasms. Pathol Int 2021; 71:823-830. [PMID: 34643317 DOI: 10.1111/pin.13177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 08/23/2021] [Accepted: 09/18/2021] [Indexed: 01/10/2023]
Abstract
Intracholecystic papillary neoplasms are newly defined precancerous lesions. According to Classification of the World Health Organization, they have four histological morphologies, which are biliary, gastric, intestinal, and oncocytic. This study evaluated 17 patients with resected intracholecystic papillary neoplasms in terms of histological, immunohistochemical, and copy number variation (CNV). The histological subtypes included 5 cases of low-grade (5 gastric) and 12 cases of high-grade (6 gastric and 6 biliary) neoplasms. Most cases showed high expression of MUC1, MUC5AC, and CK7, moderate expression of MUC6 and Ki-67, and low expression of CK20, MUC2, and CDX2. The CNV profile identified gain of 7q in 12%, and loss of 1p (18%), 5q (29%), 9p (35%), 12p (17%), 17p (24%), and 19p (18%). No CNVs were observed in low-grade neoplasms, whereas high-grade ones had increasing abnormalities. β-catenin was often expressed in the nucleus of neoplasms with gastric morphology, suggesting the involvement of the Wnt/β-catenin pathway. However, it was not expressed among those with biliary morphology, which instead exhibited high p53 expression. Neoplasms with biliary morphology showed more CNV changes (9p, 17p, 19p losses). Distinct immunological and CNV patterns were seen in both morphologies, suggesting differences in their pathogenesis. More CNVs accumulated with tumor progression.
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Affiliation(s)
- Mia Fujisawa
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Masashi Matsushima
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Joaquim Carreras
- Department of Pathology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Kenichi Hirabayashi
- Department of Pathology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Yara Y Kikuti
- Department of Pathology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Takashi Ueda
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Motoki Kaneko
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Ryutaro Fujimoto
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Masaya Sano
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Erika Teramura
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Makiko Monma
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Hirohiko Nakae
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Takayoshi Suzuki
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Hidekazu Suzuki
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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2
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Tsuda S, Carreras J, Kikuti YY, Nakae H, Dekiden-Monma M, Imai J, Tsuruya K, Nakamura J, Tsukune Y, Uchida T, Matsushima M, Roncador G, Suzuki T, Nakamura N, Mine T. Prediction of steroid demand in the treatment of patients with ulcerative colitis by immunohistochemical analysis of the mucosal microenvironment and immune checkpoint: role of macrophages and regulatory markers in disease severity. Pathol Int 2019; 69:260-271. [PMID: 30990953 DOI: 10.1111/pin.12794] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 11/22/2018] [Accepted: 02/24/2019] [Indexed: 12/11/2022]
Abstract
We aimed to characterize the mucosal immune microenvironment and immune checkpoint of Ulcerative colitis (UC) by immunohistochemistry with correlation to prognosis: requirement of second-line steroid-therapy within the 2-years after diagnosis (SR). A series of 72 cases included 56 UC, 43 non-SR (with first-line treatment 5-ASA) and 13 SR, 11 infectious colitis and 5 normal colonic biopsies. Normal mucosa was characterized by low infiltrates but high BTLA and TNFRSF14. Compared to normal, UC had increased pan-immune-markers of CD3, CD8, FOXP3, PD-1, CD68, CD16, CD163, PTX3 and CD11C but had decreased BTLA (P < 0.05); by GSEA analysis comparable results were found in an independent UC gene-expression-data set (GSE38713). Compared to infectious, UC had higher CD4, CD8, PTX3 and CD11C but lower BTLA (P < 0.05). Compared to non-SR, SR had lower FOXP3 + Tregs (Odds-Ratio = 0.114, P = 0.002), PD-1 (OR = 0.176, P = 0.002) and CD163/CD68 M2-ratio (OR, 0.019, P = 0.019) but higher CD68 + pan-macrophages (OR = 6.034, P = 0.002). Higher Baron endoscopic and Geboes histologic disease activity scores also correlated with SR. In summary, UC was characterized by increased pan-immune-markers, normal TNFRSF14 and low BTLA. SR had increased CD68 + pan-macrophages but lower immune inhibitors of FOXP3 + Tregs, PD-1 and CD163/CD68 M2-macrophage ratio. In conclusion, alterations of the immune homeostasis mechanisms are relevant in the UC pathogenesis and steroid-requiring situation.
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Affiliation(s)
- Shingo Tsuda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Joaquim Carreras
- Department of Pathology, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Yara Y Kikuti
- Department of Pathology, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Hirohiko Nakae
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Makiko Dekiden-Monma
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Jin Imai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Kota Tsuruya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Jun Nakamura
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Yoko Tsukune
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Tetsufumi Uchida
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Masashi Matsushima
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Giovanna Roncador
- Monoclonal Antibodies Core Unit, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Takayoshi Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
| | - Tetsuya Mine
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Tokai University, School of Medicine, Isehara, Kanagawa, Japan
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Carreras J, Kikuti YY, Beà S, Miyaoka M, Hiraiwa S, Ikoma H, Nagao R, Tomita S, Martin-Garcia D, Salaverria I, Sato A, Ichiki A, Roncador G, Garcia JF, Ando K, Campo E, Nakamura N. Clinicopathological characteristics and genomic profile of primary sinonasal tract diffuse large B cell lymphoma (DLBCL) reveals gain at 1q31 and RGS1 encoding protein; high RGS1 immunohistochemical expression associates with poor overall survival in DLBC. Histopathology 2017; 70:595-621. [DOI: 10.1111/his.13106] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 09/29/2016] [Accepted: 10/21/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Joaquim Carreras
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
| | - Yara Y Kikuti
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
| | - Sílvia Beà
- Hematopathology Unit; Hospital Clínic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
| | - Masashi Miyaoka
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
| | - Shinichiro Hiraiwa
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
| | - Haruka Ikoma
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
| | - Ryoko Nagao
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
| | - Sakura Tomita
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
| | - David Martin-Garcia
- Hematopathology Unit; Hospital Clínic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
| | - Itziar Salaverria
- Hematopathology Unit; Hospital Clínic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
| | - Ai Sato
- Department of Hematology and Oncology; Tokai University; School of Medicine; Kanagawa Japan
| | - Akifumi Ichiki
- Department of Hematology and Oncology; Tokai University; School of Medicine; Kanagawa Japan
| | - Giovanna Roncador
- Monoclonal Antibodies Unit; Spanish National Cancer Research Centre (CNIO); Madrid Spain
| | - Juan F Garcia
- Department of Pathology; MD Anderson Cancer Center Madrid; Madrid Spain
| | - Kiyoshi Ando
- Department of Hematology and Oncology; Tokai University; School of Medicine; Kanagawa Japan
| | - Elias Campo
- Hematopathology Unit; Hospital Clínic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); University of Barcelona; Barcelona Spain
| | - Naoya Nakamura
- Department of Pathology; Tokai University; School of Medicine; Kanagawa Japan
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Tomita S, Kikuti YY, Esteban JC, Takata K, Yoshino T, Beà S, Campo E, Nakamura N. Genomic and immunohistochemical profiles of enteropathy-associated T-cell lymphoma in Japan. Pathology 2016. [DOI: 10.1016/j.pathol.2015.12.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Tomita S, Kikuti YY, Carreras J, Kojima M, Ando K, Takasaki H, Sakai R, Takata K, Yoshino T, Bea S, Campo E, Nakamura N. Genomic and immunohistochemical profiles of enteropathy-associated T-cell lymphoma in Japan. Mod Pathol 2015; 28:1286-96. [PMID: 26226842 DOI: 10.1038/modpathol.2015.85] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 11/09/2022]
Abstract
Enteropathy-associated T-cell lymphoma (EATL) is a rare primary T-cell lymphoma of the digestive tract. EATL is classified as either Type I, which is frequently associated with and thought to arise from celiac disease and is primarily observed in Northern Europe, and Type II, which occurs de novo and is distributed all over the world with predominance in Asia. The pathogenesis of EATL in Asia is unknown. We aimed to clarify the histological and genomic profiles of EATL in Japan in a homogeneous series of 20 cases. The cases were characterized by immunohistochemistry, high-resolution oligonucleotide microarray, and fluorescence in situ hybridization (FISH) at five different loci: 1q21.3 (CKS1B), 6q16.3 (HACE1), 7p22.3 (MAFK), 9q33.3 (PPP6C), and 9q34.3 (ASS1, CARD9) using formalin-fixed paraffin-embedded sections. The histological appearance of EATL ranged from medium- to large-sized cells in 13 cases (65%), small- to medium-sized cells in five cases (25%), and medium-sized in two cases (10%). The immunophenotype was CD2(+) (60%), CD3ɛ(+) (100%), CD4(+) (10%), CD7(+) (95%), CD8(+) (80%), CD56(+) (85%), TIA-1(+) (100%), Granzyme B(+) (25%), T-cell receptor (TCR)β(+) (10%), TCRγ(+) (35%), TCRγδ(+) (50%), and double negative for TCR (six cases, 30%). All cases were EBER(-). The genomic profile showed recurrent copy number gains of 1q32.3, 4p15.1, 5q34, 7q34, 8p11.23, 9q22.31, 9q33.2, 9q34.13, and 12p13.31, and losses of 7p14.1. FISH showed 15 patients (75%) with a gain of 9q34.3 with good correlation with array comparative genomic hybridization. EATL in Japan is characterized by non-monomorphic cells with a cytotoxic CD8(+) CD56(+) phenotype similar to EATL Type II. The genomic profile is comparable to EATL of Western countries, with more similarity to Type I (gain of 1q and 5q) rather than Type II (gain of 8q24, including MYC). The 9q34.3 gain was the most frequent change confirmed by FISH irrespective of the cell origin of αβ-T-cells and γδ-T-cells.
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Affiliation(s)
- Sakura Tomita
- Department of Pathology, Tokai University, School of Medicine, Isehara, Japan
| | - Yara Y Kikuti
- Department of Pathology, Tokai University, School of Medicine, Isehara, Japan
| | - Joaquim Carreras
- Department of Pathology, Tokai University, School of Medicine, Isehara, Japan
| | - Minoru Kojima
- Department of Hematology, Tokai University, School of Medicine, Isehara, Japan
| | - Kiyoshi Ando
- Department of Hematology, Tokai University, School of Medicine, Isehara, Japan
| | | | - Rika Sakai
- Department of Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - Katsuyoshi Takata
- Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tadashi Yoshino
- Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Silvia Bea
- Department of Pathology and Hematopathology Unit, Hospital Clinic Barcelona, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - Elias Campo
- Department of Pathology and Hematopathology Unit, Hospital Clinic Barcelona, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - Naoya Nakamura
- Department of Pathology, Tokai University, School of Medicine, Isehara, Japan
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Takahashi M, Aoki T, Nakamura N, Carreras J, Kajiwara H, Kumaki N, Inomoto C, Ogura G, Kikuchi T, Kikuti YY, Aoyama K, Ota Y. Clinicopathological analysis of 502 patients with oral squamous cell carcinoma with special interest to distant metastasis. Tokai J Exp Clin Med 2014; 39:178-185. [PMID: 25504205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 10/06/2014] [Indexed: 06/04/2023]
Abstract
Oral squamous cell carcinoma (OSCC) is the most common malignancy of the oral cavity. Distant metastasis (DM) especially bone metastasis (BM) may reduce patients' quality of life and affects the clinical outcome. We performed clinicopathological analysis of 502 patients with OSCC undergoing radical surgery in order to evaluate the correlation values of clinicopathological features for OSCC with special interest in DM. DM was found in 54 cases and among them 44 and 25 cases had pulmonary metastasis (PM) and BM, respectively. Advanced T stage, positive N stage, lower histologic grade and higher score YK classification were the independent significant prognostic factors found in our series of 502 cases of OSCC. Positive lymph node was the most important prognostic factors in DM and BM; on the other hand, in PM, it was lower histological grade. All patients with BM except one had vertebral bone metastasis. These characteristics of DM, including BM and PM, of OSCC are useful for understanding the metastatic process of OSCC.
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Affiliation(s)
| | - Takayuki Aoki
- Departments of Oral and Maxillofacial Surgery, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.
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Matsuzaka Y, Kikuti YY, Izumi S, Suzuki T, Cai LY, Goya K, Inoko H, Makino T, Kulski JK, Kimura M. Mapping of susceptibility locus for endometriosis within the HLA region using microsatellite markers in Japanese women. ACTA ACUST UNITED AC 2010; 75:65-7. [PMID: 20196820 DOI: 10.1111/j.1399-0039.2009.01391.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Endometriosis is a female disorder characterized by the presence of uterine endometrial tissue in ectopic loci. Previous studies reported a higher prevalence of particular human leukocyte antigen (HLA) in endometriosis. In order to confirm the association between endometriosis and the HLA region, 15 polymorphic microsatellite markers distributed in the HLA class II to class III region were subjected to association analysis by polymerase chain reaction (PCR)-based DNA typing of 89 patients and 136 healthy controls. Statistical analysis of the allelic frequency at each microsatellite locus showed that there were no statistically significant differences in the allele frequency distributions between the cases and controls. This finding suggests that the etiology of endometriosis does not involve the HLA class II genomic region and a portion of class III genomic region in the Japanese population.
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Affiliation(s)
- Y Matsuzaka
- Department of Molecular Life Science, Tokai University School of Medicine, Bohseidai, Isehara, Kanagawa, Japan
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8
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Ando A, Kikuti YY, Abe K, Shigenari A, Kawata H, Ikemura T, Kimura M, Inoko H. cDNA cloning, northern hybridization, and mapping analysis of a putative GDS-related protein gene at the centromeric ends of the human and mouse MHC regions. Immunogenetics 1999; 49:354-6. [PMID: 10079301 DOI: 10.1007/s002510050504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- A Ando
- Department of Molecular Life Science, Tokai University School of Medicine, Bohseidai, Isehara, Kanagawa 259-1193, Japan
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Kawakami S, Mitsunaga K, Kikuti YY, Ando A, Inoko H, Yamamura K, Abe K. Tctex3, related to Drosophila polycomblike, is expressed in male germ cells and mapped to the mouse t-complex. Mamm Genome 1998; 9:874-80. [PMID: 9799836 DOI: 10.1007/s003359900886] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Tctex3 showing restricted expression in male germ cells has been isolated during the process of chromosome walking in the mouse t-complex region. The total sequence of Tctex3 cDNA predicts a protein of 580 amino acids with two C4HC3 type PHD fingers. The region containing this conserved motif is shared among members of the Polycomblike proteins that include the mouse M96 and Drosophila Polycomblike. A partial cDNA for a human homolog of Tctex3, HUTEX3, has also been isolated. Mouse Tctex3 gene was mapped adjacent to Tsc2 gene on mouse Chromosome (Chr) 17, and HUTEX3 was located closely to HSET gene in the HLA class II region of chromosome 6.
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Affiliation(s)
- S Kawakami
- Institute of Molecular Embryology and Genetics, Kumamoto University School of Medicine, 4-24-1 Kuhonji, Kumamoto 862, Japan
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10
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Kikuti YY, Tamiya G, Ando A, Chen L, Kimura M, Ferreira E, Tsuji K, Trowsdale J, Inoko H. Physical mapping 220 kb centromeric of the human MHC and DNA sequence analysis of the 43-kb segment including the RING1, HKE6, and HKE4 genes. Genomics 1997; 42:422-35. [PMID: 9205114 DOI: 10.1006/geno.1997.4745] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A cosmid contig was constructed from a YAC clone with a 220-kb insert that spans the centromeric side of the human MHC class II region, corresponding to the mouse t complex. The gene order was identified to be HSET-HKE1.5-HKE2-HKE3-RING1-HKE6- HKE4 (RING5). The genomic sequence of a 42,801-bp long region encoded by one cosmid clone in the RING1, HKE6, and HKE4 subregions was determined by the shotgun method. The exon-intron organization of these three genes, RING1 (Ring finger protein), HKE6 (steroid dehydrogenase-like protein), and HKE4 (transmembrane protein with histidine-rich charge clusters), was determined. The previously reported RING2 gene was revealed to be identical to HKE6. Transcripts from HKE4 were detected in the placenta, lung, kidney, and pancreas. Those of HKE6 were found in the liver and pancreas. The 25-kb region proximal to the RING1 gene includes an extensive dense cluster of Alu repeats (about 1.2 Alu per kb), and no gene has been identified in this so far. The region is equivalent to part of the mouse t complex and could be of relevance to human development.
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Affiliation(s)
- Y Y Kikuti
- Department of Transplantation Immunology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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11
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Mizuki N, Ando H, Kimura M, Ohno S, Miyata S, Yamazaki M, Tashiro H, Watanabe K, Ono A, Taguchi S, Sugawara C, Fukuzumi Y, Okumura K, Goto K, Ishihara M, Nakamura S, Yonemoto J, Kikuti YY, Shiina T, Chen L, Ando A, Ikemura T, Inoko H. Nucleotide sequence analysis of the HLA class I region spanning the 237-kb segment around the HLA-B and -C genes. Genomics 1997; 42:55-66. [PMID: 9177776 DOI: 10.1006/geno.1997.4708] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
To elucidate the detailed gene organization of the human leukocyte antigen (HLA) class I region on chromosome 6, seven contiguous cosmid genomic clones covering the 237-kb segment around the HLA-B and -C loci were subjected to DNA sequencing by the shotgun strategy to give a single contig of 236,822 bp from the MICA gene (58.2 kb centromeric of HLA-B) to 90.8 kb telomeric of HLA-C. This region was confirmed to contain four known genes, MICA, HLA-17, HLA-B, and HLA-C, from centromere to telomere. Further, a new member of the P5 multicopy genes was found to be about 1.3 kb upstream of the HLA-17 gene and designated P5.8. Five novel genes designated NOB1-5 were identified by RT-PCR and Northern blot hybridization. In addition, two pseudogenes, dihydrofolate reductase pseudogene (DHFRP) and ribosomal protein L3 homologous gene (RPL3-Hom), were also found in the vicinity of the HLA-B and -C genes, respectively. The two segments (about 40 kb) downstream of the HLA-B and HLA-C genes showed high sequence homology to each other, suggesting that segmental genome duplication including the major histocompatibility complex (MHC) class I gene must have occurred during the evolution of the MHC.
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MESH Headings
- Blotting, Northern
- Chromosomes, Artificial, Yeast/genetics
- Chromosomes, Human, Pair 6/genetics
- Cloning, Molecular
- Cosmids
- DNA/genetics
- Evolution, Molecular
- HLA-B Antigens/genetics
- HLA-C Antigens/genetics
- Humans
- Molecular Sequence Data
- Multigene Family
- Polymerase Chain Reaction
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Restriction Mapping
- Ribosomal Protein L3
- Sequence Analysis, DNA
- Sequence Homology, Nucleic Acid
- Tissue Distribution
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Affiliation(s)
- N Mizuki
- Department of Genetic Information, Tokai University School of Medicine, Kanagawa, Japan
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12
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Ando A, Kikuti YY, Shigenari A, Kawata H, Okamoto N, Shiina T, Chen L, Ikemura T, Abe K, Kimura M, Inoko H. cDNA cloning of the human homologues of the mouse Ke4 and Ke6 genes at the centromeric end of the human MHC region. Genomics 1996; 35:600-2. [PMID: 8812499 DOI: 10.1006/geno.1996.0405] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
cDNA clones corresponding to the HKE4 and HKE6 genes at the centromeric end of the HLA region on human chromosome 6p21.3 were isolated and characterized. The predicted amino acid sequences of HKE4 and HKE6 exhibited 81.5 and 85.6% identity to the mouse homologues, Ke4 and Ke6, respectively. HKE4 may encode a membrane protein with histidine-rich charge clusters. HKE6 possesses remarkable amino acid sequence conservation with several bacterial proteins with oxidoreductase function and also shows significant homology with the two unique functional domains containing the nucleotide cofactor binding site and the consensus motif characteristic of the members of the superfamily of short-chain alcohol dehydrogenases such as human and rat steroid and prostaglandin dehydrogenases.
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Affiliation(s)
- A Ando
- Department of Molecular Life Science, Tokai University School of Medicine, Kanagawa, Japan
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Ando A, Kikuti YY, Kawata H, Okamoto N, Imai T, Eki T, Yokoyama K, Soeda E, Ikemura T, Abe K. Cloning of a new kinesin-related gene located at the centromeric end of the human MHC region. Immunogenetics 1994; 39:194-200. [PMID: 8276466 DOI: 10.1007/bf00241260] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We previously reported the presence of a new gene (HSET) with an unknown function, in the centromeric side of the class II gene region of the human major histocompatibility complex (MHC). cDNA clones corresponding to the HSET gene were isolated from a human testis cDNA library. A 2.4 kilobase transcript from the HSET gene was abundantly expressed in testis, B-cell, T-cell, and ovary cell lines but was not detected in lung or stomach. Analysis of the nucleotide sequence of the HSET cDNA clones revealed significant similarity to kinesin-related proteins in yeast, Drosophila, and human. Its predicted amino acid sequence contains a domain with strong sequence similarity to the ATP-binding and motor domains of a plus end-directed microtubule motor protein, kinesin, which might be involved in mitotic chromosome segregation, suggesting that the HSET gene encodes a novel kinesin-related protein.
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Affiliation(s)
- A Ando
- Department of Molecular Life Science, Tokai University School of Medicine, Kanagawa, Japan
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Mizuki N, Ohno S, Sugimura K, Seki T, Kikuti YY, Ando A, Ota M, Tsuji K, Inoko H. PCR-RFLP is as sensitive and reliable as PCR-SSO in HLA class II genotyping. ACTA ACUST UNITED AC 1992; 40:100-3. [PMID: 1357778 DOI: 10.1111/j.1399-0039.1992.tb01967.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- N Mizuki
- Department of Ophthalmology, Yokohama City University School of Medicine, Kanagawa, Japan
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