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Nakada C, Matsuura K, Tsukamoto Y, Tanigawa M, Yoshimoto T, Narimatsu T, Nguyen LT, Hijiya N, Uchida T, Sato F, Mimata H, Seto M, Moriyama M. Genome-wide microRNA expression profiling in renal cell carcinoma: significant down-regulation of miR-141 and miR-200c. J Pathol 2008; 216:418-27. [PMID: 18925646 DOI: 10.1002/path.2437] [Citation(s) in RCA: 228] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We investigated expression profiles of microRNA (miRNA) in renal cell carcinoma [clear cell carcinomas (CCC) and chromophobe renal cell carcinomas (ChCC)] and in normal kidneys by using a miRNA microarray platform which covers a total of 470 human miRNAs (Sanger miRBase release 9.1). Unsupervised hierarchical cluster analysis revealed that CCC and ChCC were separable and that no subgroups were identified in CCCs. We found that 43 miRNAs were differentially expressed between CCC and normal kidney, of which 37 were significantly down-regulated in CCC and the other 6 were up-regulated. We also found that 57 miRNAs were differentially expressed between ChCC and normal kidney, of which 51 were significantly down-regulated in ChCC and the other 6 were up-regulated. Together, these observations indicate that expression of miRNAs tends to be down-regulated in both CCC and ChCC compared with normal kidney. We observed that miR-141 and miR-200c were the most significantly down-regulated miRNAs in CCCs. Indeed, in all cases of CCC analysed, both miR-141 and miR-200c were down-regulated in comparison with normal kidney. Microarray data and quantitative RT-PCR showed that these two miRNAs were expressed concordantly. TargetScan algorithm revealed that ZFHX1B mRNA is a hypothetical target of both miR-141 and -200c. We established by quantitative RT-PCR that, in CCCs in which miR-141 and miR-200c were down-regulated, ZFHX1B, a transcriptional repressor for CDH1/E-cadherin, tended to be up-regulated. Furthermore, we found that overexpression of miR-141 and miR-200c caused down-regulation of ZFHX1B and up-regulation of E-cadherin in two renal carcinoma cell lines, ACHN and 786-O. On the basis of these findings, we suggest that down-regulation of miR-141 and miR-200c in CCCs might be involved in suppression of CDH1/E-cadherin transcription via up-regulation of ZFHX1B.
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Yoshimoto T, Matsuura K, Karnan S, Tagawa H, Nakada C, Tanigawa M, Tsukamoto Y, Uchida T, Kashima K, Akizuki S, Takeuchi I, Sato F, Mimata H, Seto M, Moriyama M. High-resolution analysis of DNA copy number alterations and gene expression in renal clear cell carcinoma. J Pathol 2008; 213:392-401. [PMID: 17922474 DOI: 10.1002/path.2239] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We analysed chromosomal copy number aberrations (CNAs) in renal cell carcinomas by array-based comparative genomic hybridization, using a genome-wide scanning array with 2304 BAC and PAC clones covering the whole human genome at a resolution of roughly 1.3 Mb. A total of 30 samples of renal cell carcinoma were analysed, including 26 cases of clear cell carcinoma (CCC) and four cases of chromophobe renal cell carcinoma (ChCC). In CCCs, gains of chromosomes 5q33.1-qter (58%), 7q11.22-q35 (35%) and 16p12.3-p13.12 (19%), and losses of chromosomes 3p25.1-p25.3 (77%), 3p21.31-p22.3 (81%), 3p14.1-p14.2 (77%), 8p23.3 (31%), 9q21.13-qter (19%) and 14q32.32-qter (38%) were detected. On the other hand, the patterns of CNAs differed markedly between CCCs and ChCCs. Next, we examined the correlation of CNAs with expression profiles in the same tumour samples in 22/26 cases of CCC, using oligonucleotide microarray. We extracted genes that were differentially expressed between cases with and without CNAs, and found that significantly more up-regulated genes were localized on chromosomes 5 and 7, where recurrent genomic gains have been detected. Conversely, significantly more down-regulated genes were localized on chromosomes 14 and 3, where recurrent genomic losses have been detected. These results revealed that CNAs were correlated with deregulation of gene expression in CCCs. Furthermore, we compared the patterns of genomic imbalance with histopathological features, and found that loss of 14q appeared to be a specific and additional genetic abnormality in high-grade CCC. When we compared the expression profiles of low-grade CCCs with those of high-grade CCCs, differentially down-regulated genes tended to be localized on chromosomes 14 and 9. Thus, it is suggested that copy number loss at 14q in high-grade CCC may be involved in the down-regulation of genes located in this region.
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Tagawa H, Karube K, Guo Y, Takeshita M, Kikuchi M, Morishima Y, Nakamura S, Ohshima K, Seto M. Trisomy 3 is a specific genomic aberration of t(14;18) negative follicular lymphoma. Leukemia 2007; 21:2549-51. [PMID: 17611568 DOI: 10.1038/sj.leu.2404817] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Chromosome Aberrations
- Chromosome Deletion
- Chromosomes, Human, Pair 14/genetics
- Chromosomes, Human, Pair 18/genetics
- Chromosomes, Human, Pair 3/genetics
- Chromosomes, Human, Pair 9/genetics
- DNA, Neoplasm/genetics
- Female
- Gene Expression Profiling
- Humans
- Immunophenotyping
- Lymphoma, Follicular/genetics
- Male
- Middle Aged
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Translocation, Genetic
- Trisomy
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Isaka T, Nakamura T, Tajika M, Kawai H, Imaoka H, Okamoto Y, Aoki M, Inoue H, Takahashi K, Mizuno N, Sawaki A, Yamao K, Seto M, Yokoi T, Yatabe Y, Nakamura S. API2-MALT1chimeric transcript-positive gastroduodenal MALT lymphoma with subsequent development of adenocarcinoma as a collision tumour over a clinical course of 7 years. Histopathology 2007; 51:119-23. [PMID: 17542995 DOI: 10.1111/j.1365-2559.2007.02718.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Nakagawa M, Seto M, Hosokawa Y. Molecular pathogenesis of MALT lymphoma: two signaling pathways underlying the antiapoptotic effect of API2-MALT1 fusion protein. Leukemia 2006; 20:929-36. [PMID: 16572204 DOI: 10.1038/sj.leu.2404192] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
At least three recurrent chromosomal translocations, t(11;18)(q21;q21), t(1;14)(p22;q32), t(14;18)(q32;q21), involving the API2-MALT1 fusion protein, BCL10 and MALT1, have been implicated in the pathogenesis of mucosa-associated lymphoid tissue (MALT) lymphoma. Several lines of evidence indicated that both BCL10 and MALT1 are required for nuclear factor kappa B (NF-kappaB) activation by antigen receptor stimulation in lymphocytes, and API2-MALT1 can bypass this BCL10/MALT1 signaling pathway. Nuclear factor kappa B activation may contribute to antiapoptotic effect through NF-kappaB-mediated upregulation of apoptotic inhibitor genes. We recently demonstrated that API2-MALT1 can induce transactivation of the API2 gene through NF-kappaB activation, thus highlighting a positive feedback-loop mechanism of self-activation by upregulating its own expression in t(11;18) MALT lymphomas. We also demonstrated that API2-MALT1 possesses an antiapoptotic effect, in part, through its direct interaction with apoptotic regulators. These findings therefore led us to hypothesize that the antiapoptotic effect by API2-MALT1 may be mediated by its interaction with apoptotic regulators, on the one hand, and by NF-kappaB-mediated upregulation of apoptotic inhibitor genes on the other. We also found that BCL10 and MALT1 are shuttling between nucleus and cytoplasm, and that MALT1 can regulate the subcellular location of BCL10.
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31
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Mori A, Kubota K, Takayose M, Ozawa T, Seto M. P36.41 Chronological brain activity in the cerebral cortex while listening to classical music. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Tagawa H, Seto M. A microRNA cluster as a target of genomic amplification in malignant lymphoma. Leukemia 2005; 19:2013-6. [PMID: 16167061 DOI: 10.1038/sj.leu.2403942] [Citation(s) in RCA: 171] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Matsumine A, Myoui A, Kusuzaki K, Araki N, Seto M, Yoshikawa H, Uchida A. Calcium hydroxyapatite ceramic implants in bone tumour surgery. A long-term follow-up study. THE JOURNAL OF BONE AND JOINT SURGERY. BRITISH VOLUME 2004; 86:719-25. [PMID: 15274270 DOI: 10.1302/0301-620x.86b5.14242] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
We reviewed the results of 51 patients with benign bone tumours treated by curettage and implantation of calcium hydroxyapatite ceramic (CHA). The mean follow-up was 11.4 years (10 to 15.5). Post-operative fractures occurred in two patients and three had local recurrences; three had slightly limited movement of the adjacent joint and one had mild osteoarthritis. There were no allergic or neoplastic complications. In all cases, radiographs showed that the CHA was well incorporated into the host bone. Statistical analysis showed that absorption of the implanted CHA was greater in males (odds ratio, 6.2; 95% CI, 1.6 to 23.7) and younger patients (odds ratio, 0.6 for increase in age of 10 years; 95% CI, 0.91 to 0.99). However, the implanted CHA was not completely absorbed in any patient. We conclude that CHA is a useful and safe bone substitute for the treatment of benign bone tumours.
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Asano N, Yamakazi T, Seto M, Matsumine A, Yoshikawa H, Uchida A. The expression and prognostic significance of bone morphogenetic protein-2 in patients with malignant fibrous histiocytoma. ACTA ACUST UNITED AC 2004. [DOI: 10.1302/0301-620x.86b4.14484] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We investigated the rates of expression of bone morphogenetic protein-2 (BMP-2) in 29 adult patients with high-grade malignant fibrous histiocytoma of soft tissue, using the BMP-2-specific monoclonal antibody, AbH3b2/17, and found that they ranged from 1.9% to 78.9%. The survival at five years of the groups expressing high (≥30%) and low (< 30%) levels of BMP-2 was 85.7% and 36.3%, respectively. Multivariable analysis showed that only BMP-2 had prognostic significance for continuous disease-free survival and for overall survival (p < 0.05). Our findings indicate that over-expression of BMP-2 in malignant fibrous histiocytoma of soft tissue is the most reliable prognostic indicator of the parameters assessed.
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Asano N, Yamakazi T, Seto M, Matsumine A, Yoshikawa H, Uchida A. The expression and prognostic significance of bone morphogenetic protein-2 in patients with malignant fibrous histiocytoma. THE JOURNAL OF BONE AND JOINT SURGERY. BRITISH VOLUME 2004; 86:607-12. [PMID: 15174563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
We investigated the rates of expression of bone morphogenetic protein-2 (BMP-2) in 29 adult patients with high-grade malignant fibrous histiocytoma of soft tissue, using the BMP-2-specific monoclonal antibody, AbH3b2/17, and found that they ranged from 1.9% to 78.9%. The survival at five years of the groups expressing high (> or = 30%) and low (< 30%) levels of BMP-2 was 85.7% and 36.3%, respectively. Multivariable analysis showed that only BMP-2 had prognostic significance for continuous disease-free survival and for overall survival (p < 0.05). Our findings indicate that over-expression of BMP-2 in malignant fibrous histiocytoma of soft tissue is the most reliable prognostic indicator of the parameters assessed.
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36
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Ikeda K, Kojima N, Ono Y, Kobayashi Y, Seto M, Liu XJ, Moritomo Y. Study on Chemical Bond and Electronic State of New Gold Mixed Valence Complexes Cs2[AuIX2][AuIIIY4] (X, Y=Cl, Br, I) by Means of197Au Mössbauer Spectroscopy. ACTA ACUST UNITED AC 2004. [DOI: 10.1023/b:hype.0000043246.01752.dc] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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37
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Kojima N, Ono Y, Kobayashi Y, Seto M. Control of Charge Transfer Phase Transition in Iron Mixed-Valence System (n-CnH2n+1)4N[FeIIFeIII(dto)3] (n=3–6; dto = C2O2S2). ACTA ACUST UNITED AC 2004. [DOI: 10.1023/b:hype.0000043225.69813.44] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Suguro-Katayama M, Suzuki R, Kasugai Y, Nakamura T, Suzuki H, Hosokawa Y, Shiku H, Nakamura S, Seto M. Heterogeneous copy numbers of API2-MALT1 chimeric transcripts in mucosa-associated lymphoid tissue lymphoma. Leukemia 2003; 17:2508-12. [PMID: 14562112 DOI: 10.1038/sj.leu.2403179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
T(11;18)(q21;q21) results in a chimeric transcript between API2 at 11q21 and MALT1 at 18q21 and is a characteristic chromosomal aberration of extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma). API2-MALT1 chimeric transcripts are present in approximately one-third of all cases of MALT lymphoma. MALT lymphoma is also known to have variations in histological features and tumor cell proportions. Real-time polymerase chain reaction (PCR) was used to examine number of API2-MALT1 copies in clinical samples for further investigation of the pathophysiology of MALT lymphoma. A total of 13 samples of MALT lymphoma contained API2-MALT1 transcripts from 1.7 x 10(-2) to 1.0 copies/beta-actin copy. These findings were compared to the proportions of tumor cells in genomic VDJ PCR products determined by Southern blotting. Tumor cell ratios varied widely among the patients' samples, and no significant correlation was found between transcript copy number and tumor cell ratio. These results suggest that copy numbers of API2-MALT1 do not reflect tumor cell proportions, and that the number of copies of API2-MALT1 in a tumor cell is different for each clinical sample.
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MESH Headings
- Adult
- Aged
- Blotting, Northern
- Blotting, Southern
- Colon/pathology
- Female
- Gene Dosage
- Humans
- Immunoglobulin Heavy Chains/genetics
- Lung/pathology
- Lymphoma, B-Cell, Marginal Zone/genetics
- Lymphoma, B-Cell, Marginal Zone/pathology
- Lymphoma, B-Cell, Marginal Zone/physiopathology
- Male
- Middle Aged
- Mucous Membrane/pathology
- Oncogene Proteins, Fusion/genetics
- Organ Specificity
- Pleural Cavity/pathology
- RNA, Messenger
- Recombinant Fusion Proteins/genetics
- Stomach/pathology
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39
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40
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41
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Mitsui T, Zhang X, Kitao S, Kobayashi Y, Seto M, Kikuta S. Self-interference effect of nuclear forward scattering in an antiferromagnet 57FeBO 3single crystal which is excited with magneto elastic vibration of 27.56 nHz. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302091663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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42
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Yoda Y, Zhang XW, Seto M, Kitao S, Kikuta S. High-resolution monochromator for nuclear resonant scattering by 151Eu and 149Sm. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302091675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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43
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Yonezumi M, Suzuki R, Suzuki H, Yoshino T, Oshima K, Hosokawa Y, Asaka M, Morishima Y, Nakamura S, Seto M. Detection of AP12-MALT1 chimaeric gene in extranodal and nodal marginal zone B-cell lymphoma by reverse transcription polymerase chain reaction (PCR) and genomic long and accurate PCR analyses. Br J Haematol 2001; 115:588-94. [PMID: 11736940 DOI: 10.1046/j.1365-2141.2001.03158.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
t(11;18)(q21;q21) has been recognized as a characteristic chromosomal translocation in mucosa-associated lymphoid tissue (MALT)-type lymphoma, and recent studies have demonstrated that this translocation results in the chimaeric transcript of API2 (apoptosis inhibitor 2)-MALT1 (mucosa-associated lymphoid tissue lymphoma translocation gene 1). In this study, we used reverse transcription polymerase chain reaction (RT-PCR) to analyse the incidence of this fusion product in a large series of MALT lymphoma, nodal marginal zone B-cell lymphoma (nMZBCL) and extranodal diffuse large B-cell lymphoma (DLBL) cases. RT-PCR analysis revealed that 17 of the 95 (17.9%) MALT lymphomas but none of the nine nMZBCLs or 16 DLBLs had API2-MALT1 fusion transcripts. The incidence of API2-MALT1 varied among MALT lymphomas arising from different sites and was highest for pulmonary MALT lymphomas (10 out of 16 cases, 62.5%). The presence of the API2-MALT1 fusion gene was also confirmed by long and accurate (LA)-PCR with genomic DNA, and the result correlated well with that obtained with the RT-PCR assay, thus demonstrating the usefulness of LA-PCR for the detection of the API2-MALT1 fusion gene.
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Eguchi M, Eguchi-Ishimae M, Seto M, Morishita K, Suzuki K, Ueda R, Ueda K, Kamada N, Greaves M. GPHN, a novel partner gene fused to MLL in a leukemia with t(11;14)(q23;q24). Genes Chromosomes Cancer 2001; 32:212-21. [PMID: 11579461 DOI: 10.1002/gcc.1185] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
We report a novel MLL-associated chromosome translocation t(11;14)(q23;q24) in a child who showed signs of acute undifferentiated leukemia 3 years after intensive chemotherapy that included the topoisomerase-II inhibitor VP 16. Screening of a cDNA library of the patient's leukemic cells showed a novel fusion transcript between MLL and the Gephyrin (GPHN) gene on 14q24. The resulting MLL-GPHN fusion gene encodes MLL AT hook motifs and a DNA methyltransferase homology domain fused to the C-terminal half of Gephyrin, including a presumed tubulin binding site and a domain homologous to the Escherichia coli molybdenum cofactor biosynthesis protein MoeA. Genomic breakpoint analysis showed potential in vitro topoisomerase-II DNA-binding sites spanning the breakpoints in both MLL and GPHN but no flanking sequences that might mediate homologous recombination. This suggests that MLL-GPHN may have been generated by VP 16/topoisomerase-II-induced DNA double-strand breaks, followed by error-prone DNA repair via non-homologous end joining. Gephyrin was originally identified as a submembraneous scaffold protein that anchors and immobilizes postsynaptic membrane neurotransmitter receptors to underlying cytoskeletal elements. It also is reported to bind to phosphatidylinositol 3,4,5-triphosphate binding proteins involved in actin dynamics and downstream signaling and interacts with ATM-related family member RAFT1. Gephyrin domains in the chimeric protein therefore could contribute novel signal sequences or might modify MLL activity by oligomerization or intracellular redistribution.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Carrier Proteins/genetics
- Child, Preschool
- Chromosome Breakage/genetics
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 14/genetics
- Cloning, Molecular
- DNA-Binding Proteins/genetics
- Female
- Histone-Lysine N-Methyltransferase
- Humans
- Leukemia, Monocytic, Acute/genetics
- Membrane Proteins/genetics
- Molecular Sequence Data
- Myeloid-Lymphoid Leukemia Protein
- Oncogene Proteins, Fusion/genetics
- Proto-Oncogenes
- Transcription Factors
- Translocation, Genetic
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Hata M, Kagotani K, Okumura K, Seto M, Ohtsuka K. Characterization of a processed pseudogene of human psiHSP40 on chromosome 2q32. DNA SEQUENCE : THE JOURNAL OF DNA SEQUENCING AND MAPPING 2001; 12:293-7. [PMID: 11916264 DOI: 10.3109/10425170109025006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A pseudogene for the human Hsp40 gene has been characterized (psiHSP40). The pseudogene sequence shows 90% similarity to the human Hsp40 mRNA at the nucleotide level. No introns were found in the region corresponding to the human Hsp40 cDNA, and two direct repeats flank this same region. Because of these features, the pseudogene can be classified as a processed pseudogene. PsiHSP40 was assigned to chromosome 2q32 by in situ hybridization. This is the first report of a pseudogene for a member of the DnaJ (Hsp40) family protein gene.
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Oyama T, Kagami Y, Seto M, Morishim Y. Mechanism of action on B cell lymphoma by chimeric anti-CD20 monoclonal antibody. Leukemia 2001; 15:1667. [PMID: 11587229 DOI: 10.1038/sj.leu.2402242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Yatabe Y, Suzuki R, Matsuno Y, Tobinai K, Ichinohazama R, Tamaru J, Mizoguchi Y, Hashimoto Y, Yamaguchi M, Kojima M, Uike N, Okamoto M, Isoda K, Ichimura K, Morishima Y, Seto M, Suchi T, Nakamura S. Morphological spectrum of cyclin D1-positive mantle cell lymphoma: study of 168 cases. Pathol Int 2001; 51:747-61. [PMID: 11881727 DOI: 10.1046/j.1440-1827.2001.01277.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Immunostaining for cyclin D1 is essential for reliable diagnosis of mantle cell lymphoma (MCL). However, a small number of cyclin D1-positive lymphomas other than MCL have been encountered. Our goal was to investigate the morphological spectrum of MCL as a disease entity, based on cyclin D1 overexpression. We reviewed 181 biopsy specimens obtained from 168 cases of cyclin D1-positive MCL. Typical findings were the presence of nodular (53.9% of cases) or diffuse (46.1%) histological patterns, containing mantle zone patterns (16.8%), naked germinal centers (33.5%) and perivascular hyaline deposition (83.2%). Unusual findings of residual germinal centers with a mantle cuff (four cases) and follicular colonization (two cases) were seen. High magnification showed a monotonous proliferation of tumor cells with cytological diversity including small (3.0%), intermediate (43.1%), medium (34.1%), medium-large (13.2%) and large (6.6%) cells. Pleomorphic and blastic/blastoid variants were encountered in 9.6 and 7.2% of cases, respectively. Three cases had foci of cells of considerable size, with a moderately abundant pale cytoplasm resembling marginal zone B cells. Two cases showed an admixture of cells which appeared transformed and mimicked the histology of chronic lymphocytic leukemia/small lymphocytic leukemia. In one, neoplastic mantle zones were surrounded by sheets of mature plasma cells, resembling the plasma cell type of Castleman's disease. An admixture of areas characteristic of MCL and of other larger cells, indicating histological progression or a composite lymphoma, were observed in seven cases. In high-grade lesions of five cases, nuclear staining of cyclin D1 was rarely detected. In our experience, cyclin D1 expression was also found in nine lymphomas other than MCL (five plasma cell myelomas, three Hodgkin's disease and one anaplastic large cell lymphoma). The application of cyclin D1 staining prompted us to recognize the broad morphological spectrum of MCL. MCL can be diagnosed with the application of cyclin D1 immunostaining, if careful attention is given to architectural and cytological features.
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Ishida R, Takashima R, Koujin T, Shibata M, Nozaki N, Seto M, Mori H, Haraguchi T, Hiraoka Y. Mitotic specific phosphorylation of serine-1212 in human DNA topoisomerase IIalpha. Cell Struct Funct 2001; 26:215-26. [PMID: 11699638 DOI: 10.1247/csf.26.215] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
It is known that topoisomerase IIalpha is phosphorylated by several kinases. To elucidate the role of phosphorylation of topoisomerase IIalpha in the cell cycle, we have examined the cell cycle behavior of phosphorylated topoisomerase IIalpha in HeLa cells using antibodies against several phospho-oligopeptides of this enzyme. Here we demonstrate that serine1212 in topoisomerase IIalpha is phosphorylated only in the mitotic phase. Using an antibody against an oligopeptide containing phosphoserine-1212 in topoisomerase IIalpha (PS1212), subcellular localization of topoisomerase IIalpha phosphorylated at serine1212 was examined by indirect immunofluorescence staining, and compared with that of overall topoisomerase IIalpha. Serine1212-phosphorylated topoisomerase IIalpha was localized specifically on mitotic chromosomes, but not on interphase chromosomes; this result contrasts with overall topoisomerase IIalpha which was observed on chomosomes in both interphase and mitosis. Serine1212-phosphorylated topoisomerase lIalpha first appeared on chromosome arms in prophase, became concentrated on the centromeres in metaphase, and disappeared in early telophase. In addition, ICRF-193, a catalytic inhibitor of topoisomerase II, prevented accumulation of serine1212-phosphorylated topoisomerase IIalpha at the centromeres. These results indicate that serine1212 of topoisomerase IIalpha is phosphorylated specifically during mitosis, and suggest that the serine1212-phosphorylated topoisomerase IIalpha acts on resolving topological constraint progressively from the chromosome arm to the centromere during metaphase chromosome condensation.
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49
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Tamura A, Miura I, Iida S, Yokota S, Horiike S, Nishida K, Fujii H, Nakamura S, Seto M, Ueda R, Taniwaki M. Interphase detection of immunoglobulin heavy chain gene translocations with specific oncogene loci in 173 patients with B-cell lymphoma. CANCER GENETICS AND CYTOGENETICS 2001; 129:1-9. [PMID: 11520558 DOI: 10.1016/s0165-4608(01)00436-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
To detect immunoglobulin heavy chain (IGH) gene translocations with specific oncogene loci, we established an interphase cytogenetic approach using double-color fluorescence in situ hybridization (DC-FISH), which we used to analyze 173 patients with B-cell lymphoma. DC-FISH using the IGH gene (14q32.3) in combination with c-MYC (8q24.1), BCL1 (11q13.3), BCL2 (18q21.3), BCL6 (3q27), and PAX-5 (9p13) gene probes detected IGH translocations in 70 (40.5%) of 173 patients. The partner genes involved in IGH translocations were identified in 56 (80%) of 70 patients, and fusion of the IGH gene with specific oncogenes was detected in 53 of 56 patients, particularly in interphase nuclei of 28 patients for whom cytogenetic analysis was not informative. The most common partner gene was BCL2 (19 patients; 27% of IGH translocation-positive patients), followed by BCL6 (16; 23%), BCL1 (11; 16%), c-MYC (7; 10%), and PAX-5 (2; 3%). These oncogenes were closely associated with subtypes of B-cell lymphoma. The other partners were 19q13 (BCL3), 6p25 (MUM1/IRF4), 1q36, and chromosome 8 identified in one patient each. Six of the nine patients with add(14)(q32) showed a BCL6/IGH translocation. Double translocations of the IGH gene were found in three patients; c-MYC+BCL1, c-MYC+BCL2, and c-MYC+BCL6 in each one. Interphase FISH using specific IGH-translocation probes is valuable for defining clinically meaningful subgroups of B-cell lymphoma.
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Suzuki R, Takemura K, Tsutsumi M, Nakamura S, Hamajima N, Seto M. Detection of cyclin D1 overexpression by real-time reverse-transcriptase-mediated quantitative polymerase chain reaction for the diagnosis of mantle cell lymphoma. THE AMERICAN JOURNAL OF PATHOLOGY 2001; 159:425-9. [PMID: 11485900 PMCID: PMC1850568 DOI: 10.1016/s0002-9440(10)61713-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diagnosis of mantle cell lymphoma (MCL) is particularly important for clinical management because of a remarkable prognostic difference between MCL and other types of B-cell lymphoma. In addition to immunohistochemical analysis, we have established a 5' exonuclease-based real-time reverse transcriptase-mediated quantitative polymerase chain reaction (RQ-PCR) method to detect cyclin D1 overexpression for the diagnosis of MCL. The RQ-PCR could detect cyclin D1 overexpression in all nine examined MCL cases, in contrast genomic PCR detected t(11;14) in only two of nine cases. By RQ-PCR the expression of G6PDH was significantly higher in myeloid leukemias than those in B-cell lymphomas (P = 0.018). As a result, cyclin D1/G6PDH ratio ranged from 0.78 to 12.4 (mean, 1.83) in MCL, exclusively higher than those in other B-cell lymphoma (0.00009 approximately 0.16) and myeloid leukemia (0.00011 approximately 0.085). The high expression of cyclin D1 in certain myeloid leukemias was identified to reflect their proliferative activity and not to represent the oncogenic overexpression. The 95% confidence interval of the cyclin D1/G6PDH ratio was 0.29 approximately 11.1 for MCL, 0.014 approximately 0.25 for other B-cell lymphomas and 0.000014 approximately 0.083 for myeloid leukemia, suggesting that a cutoff value can be set at 0.25. The RQ-PCR of cyclin D1 is convenient and especially useful for the diagnosis of MCL.
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MESH Headings
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/genetics
- Biopsy
- Blotting, Northern
- Cell Division
- Chromosomes, Human, Pair 11
- Chromosomes, Human, Pair 15
- Cyclin D1/analysis
- Cyclin D1/genetics
- Diagnosis, Differential
- Glucosephosphate Dehydrogenase/analysis
- Humans
- Lymph Nodes/pathology
- Lymphoma, B-Cell/genetics
- Lymphoma, B-Cell/pathology
- Lymphoma, Mantle-Cell/genetics
- Lymphoma, Mantle-Cell/pathology
- Reverse Transcriptase Polymerase Chain Reaction
- Translocation, Genetic
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