LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 133

Search options

  1. Article ; Online: Precise characterization of somatic complex structural variations from tumor/control paired long-read sequencing data with nanomonsv.

    Shiraishi, Yuichi / Koya, Junji / Chiba, Kenichi / Okada, Ai / Arai, Yasuhito / Saito, Yuki / Shibata, Tatsuhiro / Kataoka, Keisuke

    Nucleic acids research

    2023  Volume 51, Issue 14, Page(s) e74

    Abstract: We present our novel software, nanomonsv, for detecting somatic structural variations (SVs) using tumor and matched control long-read sequencing data with a single-base resolution. The current version of nanomonsv includes two detection modules, ... ...

    Abstract We present our novel software, nanomonsv, for detecting somatic structural variations (SVs) using tumor and matched control long-read sequencing data with a single-base resolution. The current version of nanomonsv includes two detection modules, Canonical SV module, and Single breakend SV module. Using tumor/control paired long-read sequencing data from three cancer and their matched lymphoblastoid lines, we demonstrate that Canonical SV module can identify somatic SVs that can be captured by short-read technologies with higher precision and recall than existing methods. In addition, we have developed a workflow to classify mobile element insertions while elucidating their in-depth properties, such as 5' truncations, internal inversions, as well as source sites for 3' transductions. Furthermore, Single breakend SV module enables the detection of complex SVs that can only be identified by long-reads, such as SVs involving highly-repetitive centromeric sequences, and LINE1- and virus-mediated rearrangements. In summary, our approaches applied to cancer long-read sequencing data can reveal various features of somatic SVs and will lead to a better understanding of mutational processes and functional consequences of somatic SVs.
    MeSH term(s) Humans ; Genome, Human ; Genomic Structural Variation ; High-Throughput Nucleotide Sequencing/methods ; Mutation ; Neoplasms/genetics ; Sequence Analysis, DNA/methods ; Software
    Language English
    Publishing date 2023-06-13
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 186809-3
    ISSN 1362-4962 ; 1362-4954 ; 0301-5610 ; 0305-1048
    ISSN (online) 1362-4962 ; 1362-4954
    ISSN 0301-5610 ; 0305-1048
    DOI 10.1093/nar/gkad526
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Assessing the efficacy of target adaptive sampling long-read sequencing through hereditary cancer patient genomes.

    Nakamura, Wataru / Hirata, Makoto / Oda, Satoyo / Chiba, Kenichi / Okada, Ai / Mateos, Raúl Nicolás / Sugawa, Masahiro / Iida, Naoko / Ushiama, Mineko / Tanabe, Noriko / Sakamoto, Hiromi / Sekine, Shigeki / Hirasawa, Akira / Kawai, Yosuke / Tokunaga, Katsushi / Tsujimoto, Shin-Ichi / Shiba, Norio / Ito, Shuichi / Yoshida, Teruhiko /
    Shiraishi, Yuichi

    NPJ genomic medicine

    2024  Volume 9, Issue 1, Page(s) 11

    Abstract: Innovations in sequencing technology have led to the discovery of novel mutations that cause inherited diseases. However, many patients with suspected genetic diseases remain undiagnosed. Long-read sequencing technologies are expected to significantly ... ...

    Abstract Innovations in sequencing technology have led to the discovery of novel mutations that cause inherited diseases. However, many patients with suspected genetic diseases remain undiagnosed. Long-read sequencing technologies are expected to significantly improve the diagnostic rate by overcoming the limitations of short-read sequencing. In addition, Oxford Nanopore Technologies (ONT) offers adaptive sampling and computationally driven target enrichment technology. This enables more affordable intensive analysis of target gene regions compared to standard non-selective long-read sequencing. In this study, we developed an efficient computational workflow for target adaptive sampling long-read sequencing (TAS-LRS) and evaluated it through application to 33 genomes collected from suspected hereditary cancer patients. Our workflow can identify single nucleotide variants with nearly the same accuracy as the short-read platform and elucidate complex forms of structural variations. We also newly identified several SINE-R/VNTR/Alu (SVA) elements affecting the APC gene in two patients with familial adenomatous polyposis, as well as their sites of origin. In addition, we demonstrated that off-target reads from adaptive sampling, which is typically discarded, can be effectively used to accurately genotype common single-nucleotide polymorphisms (SNPs) across the entire genome, enabling the calculation of a polygenic risk score. Furthermore, we identified allele-specific MLH1 promoter hypermethylation in a Lynch syndrome patient. In summary, our workflow with TAS-LRS can simultaneously capture monogenic risk variants including complex structural variations, polygenic background as well as epigenetic alterations, and will be an efficient platform for genetic disease research and diagnosis.
    Language English
    Publishing date 2024-02-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2813848-X
    ISSN 2056-7944 ; 2056-7944
    ISSN (online) 2056-7944
    ISSN 2056-7944
    DOI 10.1038/s41525-024-00394-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: [Successful treatment of pure red cell aplasia with cyclosporin in a patient with T-cell large granular lymphocytic leukemia harboring the STAT3 D661V mutation].

    Adachi, Masaaki / Yoshida, Kenichi / Shiraishi, Yuichi / Chiba, Kenichi / Miyano, Satoru / Ogawa, Seishi

    Rinsho ketsueki] The Japanese journal of clinical hematology

    2019  Volume 60, Issue 1, Page(s) 39–45

    Abstract: T-cell large granular lymphocyte (T-LGL) leukemia is a chronic T-cell monoclonal disease that is occasionally associated with pure red cell aplasia (PRCA). A 71-year-old previously healthy man complained of physical fatigue and exhibited anemia ( ... ...

    Abstract T-cell large granular lymphocyte (T-LGL) leukemia is a chronic T-cell monoclonal disease that is occasionally associated with pure red cell aplasia (PRCA). A 71-year-old previously healthy man complained of physical fatigue and exhibited anemia (hemoglobin, 10.5 g/dl) with lymphocytosis (76%) showing LGL. The LGL cells expressed CD3, CD7, CD8, and T-cell receptor (TCR) -α/β. TCR-β/γ gene rearrangement was positive. He was thus diagnosed with CD8
    MeSH term(s) Aged ; Cyclosporine/therapeutic use ; Humans ; Leukemia, Large Granular Lymphocytic/complications ; Lymphocytosis ; Male ; Mutation ; Red-Cell Aplasia, Pure/drug therapy ; STAT3 Transcription Factor/genetics
    Chemical Substances STAT3 Transcription Factor ; STAT3 protein, human ; Cyclosporine (83HN0GTJ6D)
    Language Japanese
    Publishing date 2019-02-06
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 390900-1
    ISSN 0485-1439
    ISSN 0485-1439
    DOI 10.11406/rinketsu.60.39
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Systematic identification of intron retention associated variants from massive publicly available transcriptome sequencing data.

    Shiraishi, Yuichi / Okada, Ai / Chiba, Kenichi / Kawachi, Asuka / Omori, Ikuko / Mateos, Raúl Nicolás / Iida, Naoko / Yamauchi, Hirofumi / Kosaki, Kenjiro / Yoshimi, Akihide

    Nature communications

    2022  Volume 13, Issue 1, Page(s) 5357

    Abstract: Many disease-associated genomic variants disrupt gene function through abnormal splicing. With the advancement of genomic medicine, identifying disease-associated splicing associated variants has become more important than ever. Most bioinformatics ... ...

    Abstract Many disease-associated genomic variants disrupt gene function through abnormal splicing. With the advancement of genomic medicine, identifying disease-associated splicing associated variants has become more important than ever. Most bioinformatics approaches to detect splicing associated variants require both genome and transcriptomic data. However, there are not many datasets where both of them are available. In this study, we develop a methodology to detect genomic variants that cause splicing changes (more specifically, intron retention), using transcriptome sequencing data alone. After evaluating its sensitivity and precision, we apply it to 230,988 transcriptome sequencing data from the publicly available repository and identified 27,049 intron retention associated variants (IRAVs). In addition, by exploring positional relationships with variants registered in existing disease databases, we extract 3,000 putative disease-associated IRAVs, which range from cancer drivers to variants linked with autosomal recessive disorders. The in-silico screening framework demonstrates the possibility of near-automatically acquiring medical knowledge, making the most of massively accumulated publicly available sequencing data. Collections of IRAVs identified in this study are available through IRAVDB ( https://iravdb.io/ ).
    MeSH term(s) Introns/genetics ; Levamisole/analogs & derivatives ; Mutation ; RNA Splicing/genetics ; Transcriptome/genetics ; Whole Exome Sequencing
    Chemical Substances Levamisole (2880D3468G) ; 3-aminolevamisole (43081-63-6)
    Language English
    Publishing date 2022-09-29
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-022-32887-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: OVarCall: Bayesian Mutation Calling Method Utilizing Overlapping Paired-End Reads.

    Moriyama, Takuya / Shiraishi, Yuichi / Chiba, Kenichi / Yamaguchi, Rui / Imoto, Seiya / Miyano, Satoru

    IEEE transactions on nanobioscience

    2017  Volume 16, Issue 2, Page(s) 116–122

    Abstract: Detection of somatic mutations from tumor and matched normal sequencing data has become a standard approach in cancer research. Although a number of mutation callers have been developed, it is still difficult to detect mutations with low allele frequency ...

    Abstract Detection of somatic mutations from tumor and matched normal sequencing data has become a standard approach in cancer research. Although a number of mutation callers have been developed, it is still difficult to detect mutations with low allele frequency even in exome sequencing. We expect that overlapping paired-end read information is effective for this purpose, but no mutation caller has modeled overlapping information statistically in a proper form in exome sequence data. Here, we develop a Bayesian hierarchical method, OVar- Call (https://github.com/takumorizo/OVarCall), where overlapping paired-end read information improves the accuracy of low allele frequency mutation detection. Firstly, we construct two generative models: one is for reads with somatic variants generated from tumor cells and the other is for reads that does not have somatic variants but potentially includes sequence errors. Secondly, we calculate marginal likelihood for each model using a variational Bayesian algorithm to compute Bayes factor for the detection of somatic mutations. We empirically evaluated the performance of OVarCall and confirmed its better performance than other existing methods.
    Language English
    Publishing date 2017-03-01
    Publishing country United States
    Document type Journal Article
    ISSN 1558-2639
    ISSN (online) 1558-2639
    DOI 10.1109/TNB.2017.2670601
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Inter- and intra-tumor heterogeneity of genetic and immune profiles in inherited renal cell carcinoma.

    Tabata, Mariko / Sato, Yusuke / Kogure, Yasunori / McClure, Marni B / Oshikawa-Kumade, Yuji / Saito, Yuki / Shingaki, Sumito / Ito, Yuta / Yuasa, Mitsuhiro / Koya, Junji / Yoshida, Kazushi / Kohno, Takashi / Miyama, Yu / Morikawa, Teppei / Chiba, Kenichi / Okada, Ai / Ogawa, Seishi / Ushiku, Tetsuo / Shiraishi, Yuichi /
    Kume, Haruki / Kataoka, Keisuke

    Cell reports

    2023  Volume 42, Issue 7, Page(s) 112736

    Abstract: Patients with von Hippel-Lindau disease (vHL) are at risk of developing spatially and temporally multiple clear cell renal cell carcinomas (ccRCCs), which offers a valuable opportunity to analyze inter- and intra-tumor heterogeneity of genetic and immune ...

    Abstract Patients with von Hippel-Lindau disease (vHL) are at risk of developing spatially and temporally multiple clear cell renal cell carcinomas (ccRCCs), which offers a valuable opportunity to analyze inter- and intra-tumor heterogeneity of genetic and immune profiles within the same patient. Here, we perform whole-exome and RNA sequencing, digital gene expression, and immunohistochemical analyses for 81 samples from 51 ccRCCs of 10 patients with vHL. Inherited ccRCCs are clonally independent and have less genomic alterations than sporadic ccRCCs. Hierarchical clustering of transcriptome profiles shows two clusters with distinct immune signatures: immune hot and cold clusters. Interestingly, not only samples from the same tumors but also different tumors from the same patients tend to show a similar immune signature, whereas samples from different patients frequently exhibit different signatures. Our findings reveal the genetic and immune landscape of inherited ccRCCs, demonstrating the relevance of host factors in shaping anti-tumor immunity.
    MeSH term(s) Humans ; Carcinoma, Renal Cell/genetics ; Carcinoma, Renal Cell/pathology ; Kidney Neoplasms/genetics ; Kidney Neoplasms/pathology ; Von Hippel-Lindau Tumor Suppressor Protein/genetics ; Von Hippel-Lindau Tumor Suppressor Protein/metabolism ; von Hippel-Lindau Disease/genetics ; von Hippel-Lindau Disease/pathology ; Base Sequence ; Carcinoma/genetics ; Mutation
    Chemical Substances Von Hippel-Lindau Tumor Suppressor Protein (EC 2.3.2.27)
    Language English
    Publishing date 2023-07-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2023.112736
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Genetic Analysis of Pheochromocytoma and Paraganglioma Complicating Cyanotic Congenital Heart Disease.

    Ogasawara, Tatsuki / Fujii, Yoichi / Kakiuchi, Nobuyuki / Shiozawa, Yusuke / Sakamoto, Ryuichi / Ogawa, Yoshihiro / Ootani, Katsuki / Ito, Etsuro / Tanaka, Tomoaki / Watanabe, Kenichiro / Yoshida, Yusaku / Kimura, Noriko / Shiraishi, Yuichi / Chiba, Kenichi / Tanaka, Hiroko / Miyano, Satoru / Ogawa, Seishi

    The Journal of clinical endocrinology and metabolism

    2022  Volume 107, Issue 9, Page(s) 2545–2555

    Abstract: Context: Pheochromocytoma and paraganglioma (PPGL) may appear as a complication of cyanotic congenital heart disease (CCHD-PPGL) with frequent EPAS1 mutations, suggesting a close link between EPAS1 mutations and tissue hypoxia in CCHD-PPGL pathogenesis.! ...

    Abstract Context: Pheochromocytoma and paraganglioma (PPGL) may appear as a complication of cyanotic congenital heart disease (CCHD-PPGL) with frequent EPAS1 mutations, suggesting a close link between EPAS1 mutations and tissue hypoxia in CCHD-PPGL pathogenesis.
    Objective: Our aim is to further investigate the role of EPAS1 mutations in the hypoxia-driven mechanism of CCHD-PPGL pathogenesis, particularly focusing on metachronous and/or multifocal CCHD-PPGL tumors.
    Methods: We performed whole-exome sequencing (WES) for somatic and germline mutations in 15 PPGL samples from 7 CCHD patients, including 3 patients with metachronous and/or multifocal tumors, together with an adrenal medullary hyperplasia (AMH) sample.
    Results: We detected EPAS1 mutations in 15 out of 16 PPGL/AMH samples from 7 cases. Conspicuously, all EPAS1 mutations in each of 3 cases with multifocal or metachronous tumors were mutually independent and typical examples of parallel evolution, which is suggestive of strong positive selection of EPAS1-mutated clones. Compared to 165 The Cancer Genome Atlas non-CCHD-PPGL samples, CCHD-PPGL/AMH samples were enriched for 11p deletions (13/16) and 2p amplifications (4/16). Of particular note, the multiple metachronous PPGL tumors with additional copy number abnormalities developed 18 to 23 years after the resolution of hypoxemia, suggesting that CCHD-induced hypoxic environments are critical for positive selection of EPAS1 mutants in early life, but may no longer be required for development of PPGL in later life.
    Conclusion: Our results highlight a key role of activated hypoxia-inducible factor 2α due to mutated EPAS1 in positive selection under hypoxic environments, although hypoxemia itself may not necessarily be required for the EPAS1-mutated clones to progress to PPGL.
    MeSH term(s) Adrenal Gland Neoplasms/complications ; Adrenal Gland Neoplasms/genetics ; Adrenal Gland Neoplasms/pathology ; Heart Defects, Congenital/complications ; Heart Defects, Congenital/genetics ; Humans ; Hypoxia/genetics ; Paraganglioma/complications ; Paraganglioma/genetics ; Paraganglioma/pathology ; Pheochromocytoma/complications ; Pheochromocytoma/genetics ; Pheochromocytoma/pathology
    Language English
    Publishing date 2022-06-22
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3029-6
    ISSN 1945-7197 ; 0021-972X
    ISSN (online) 1945-7197
    ISSN 0021-972X
    DOI 10.1210/clinem/dgac362
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: KRAS G12 mutations as adverse prognostic factors in KMT2A-rearranged acute myeloid leukemia.

    Iyoda, Shinju / Yoshida, Kenichi / Shoji, Kota / Ito, Nana / Tanaka, Miu / Nannya, Yasuhito / Yamato, Genki / Tsujimoto, Shinichi / Shiba, Norio / Hayashi, Yasuhide / Shiozawa, Yusuke / Shiraishi, Yuichi / Chiba, Kenichi / Okada, Ai / Tanaka, Hiroko / Miyano, Satoru / Koga, Yuhki / Goto, Hiroaki / Moritake, Hiroshi /
    Terui, Kiminori / Ito, Etsuro / Kiyokawa, Nobutaka / Tomizawa, Daisuke / Taga, Takashi / Tawa, Akio / Takita, Junko / Nishikori, Momoko / Adachi, Souichi / Ogawa, Seishi / Matsuo, Hidemasa

    Leukemia

    2024  

    Language English
    Publishing date 2024-04-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 807030-1
    ISSN 1476-5551 ; 0887-6924
    ISSN (online) 1476-5551
    ISSN 0887-6924
    DOI 10.1038/s41375-024-02244-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: A comprehensive characterization of

    Shiraishi, Yuichi / Kataoka, Keisuke / Chiba, Kenichi / Okada, Ai / Kogure, Yasunori / Tanaka, Hiroko / Ogawa, Seishi / Miyano, Satoru

    Genome research

    2018  Volume 28, Issue 8, Page(s) 1111–1125

    Abstract: Although many driver mutations are thought to promote carcinogenesis via abnormal splicing, the landscape of splicing-associated variants (SAVs) remains unknown due to the complexity of splicing abnormalities. Here, we developed a statistical framework ... ...

    Abstract Although many driver mutations are thought to promote carcinogenesis via abnormal splicing, the landscape of splicing-associated variants (SAVs) remains unknown due to the complexity of splicing abnormalities. Here, we developed a statistical framework to systematically identify SAVs disrupting or newly creating splice site motifs and applied it to matched whole-exome and transcriptome sequencing data from 8976 samples across 31 cancer types, generating a catalog of 14,438 SAVs. Such a large collection of SAVs enabled us to characterize their genomic features, underlying mutational processes, and influence on cancer driver genes. In fact, ∼50% of SAVs identified were those disrupting noncanonical splice sites (non-GT-AG dinucleotides), including the third and fifth intronic bases of donor sites, or newly creating splice sites. Mutation signature analysis revealed that tobacco smoking is more strongly associated with SAVs, whereas ultraviolet exposure has less impact. SAVs showed remarkable enrichment of cancer-related genes, and as many as 14.7% of samples harbored at least one SAVs affecting them, particularly in tumor suppressors. In addition to intron retention, whose association with tumor suppressor inactivation has been previously reported, exon skipping and alternative splice site usage caused by SAVs frequently affected tumor suppressors. Finally, we described high-resolution distributions of SAVs along the gene and their splicing outcomes in commonly disrupted genes, including
    MeSH term(s) Female ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Neoplasm Proteins/biosynthesis ; Neoplasm Proteins/genetics ; RNA Splice Sites ; RNA Splicing ; RNA, Neoplasm/biosynthesis ; RNA, Neoplasm/genetics
    Chemical Substances Neoplasm Proteins ; RNA Splice Sites ; RNA, Neoplasm
    Language English
    Publishing date 2018-07-16
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1284872-4
    ISSN 1549-5469 ; 1088-9051 ; 1054-9803
    ISSN (online) 1549-5469
    ISSN 1088-9051 ; 1054-9803
    DOI 10.1101/gr.231951.117
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Genomon ITDetector: a tool for somatic internal tandem duplication detection from cancer genome sequencing data.

    Chiba, Kenichi / Shiraishi, Yuichi / Nagata, Yasunobu / Yoshida, Kenichi / Imoto, Seiya / Ogawa, Seishi / Miyano, Satoru

    Bioinformatics (Oxford, England)

    2015  Volume 31, Issue 1, Page(s) 116–118

    Abstract: Summary: Somatic internal tandem duplications (ITDs) are known to play important roles in cancer pathogenesis. Although recent advances in high-throughput sequencing technologies have enabled genome-wide detection of various types of genomic mutations, ... ...

    Abstract Summary: Somatic internal tandem duplications (ITDs) are known to play important roles in cancer pathogenesis. Although recent advances in high-throughput sequencing technologies have enabled genome-wide detection of various types of genomic mutations, including single nucleotide variants, indels and structural variations, only a few studies have focused on ITDs. We have developed an analytical tool called 'Genomon ITDetector' for genome-wide detection of somatic ITDs. After evaluating the sensitivity and precision of the proposed approach using synthetic data, we have demonstrated that it can successfully detect not only common ITDs involving FLT3, but also a number of ITDs affecting other putative driver genes in acute myeloid leukemia exome sequencing data. Availability and implementaion: Genomon ITDetector is freely available at https://github.com/ken0-1n/Genomon-ITDetector.
    MeSH term(s) Computational Biology/methods ; DNA Mutational Analysis/methods ; Exome/genetics ; High-Throughput Nucleotide Sequencing/methods ; Humans ; Leukemia, Myeloid, Acute/diagnosis ; Leukemia, Myeloid, Acute/genetics ; Mutation/genetics ; Tandem Repeat Sequences/genetics ; fms-Like Tyrosine Kinase 3/genetics
    Chemical Substances FLT3 protein, human (EC 2.7.10.1) ; fms-Like Tyrosine Kinase 3 (EC 2.7.10.1)
    Language English
    Publishing date 2015-01-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1422668-6
    ISSN 1367-4811 ; 1367-4803
    ISSN (online) 1367-4811
    ISSN 1367-4803
    DOI 10.1093/bioinformatics/btu593
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top