Updated on 2025/04/12

写真a

 
YOSHINO Seiko
 
Organization
Graduate School of Medicine Center for Research of Laboratory Animals and Medical Research Engineering Division for Advanced Medical Research Assistant Professor
Graduate School
Graduate School of Medicine
Undergraduate School
School of Medicine Department of Medicine
Title
Assistant Professor

Degree 1

  1. 博士(生命科学) ( 2013.3   東京大学 ) 

 

Papers 13

  1. Fine Regulation of MicroRNAs in Gene Regulatory Networks and Pathophysiology Reviewed Open Access

    Mayu Seida, Koichi Ogami, Seiko Yoshino, Hiroshi I. Suzuki

    International Journal of Molecular Sciences   Vol. 26 ( 7 ) page: 2861   2025.3

  2. Rapid increase of C/EBPα p42 induces growth arrest of acute myeloid leukemia (AML) cells by Cop1 deletion in Trib1-expressing AML Reviewed International journal

    Yoshitaka Sunami, Seiko Yoshino, Yukari Yamazaki, Takashi Iwamoto, Takuro Nakamura

    Leukemia   Vol. 38 ( 12 ) page: 2585 - 2597   2024.10

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s41375-024-02430-4

    Web of Science

    Scopus

    PubMed

    Other Link: https://www.nature.com/articles/s41375-024-02430-4

  3. Distinct microRNA signature and suppression of ZFP36L1 define ASCL1-positive lung adenocarcinoma. Reviewed International journal

    Takayoshi Enokido, Masafumi Horie, Seiko Yoshino, Hiroshi I Suzuki, Rei Matsuki, Hans Brunnström, Patrick Micke, Takahide Nagase, Akira Saito, Naoya Miyashita

    Molecular cancer research : MCR   Vol. 22 ( 1 ) page: 29 - 40   2024.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    Achaete-scute family bHLH transcription factor 1 (ASCL1) is a master transcription factor involved in neuroendocrine differentiation. ASCL1 is expressed in approximately 10% of lung adenocarcinomas and exerts tumor-promoting effects. Here, we explored microRNA (miRNA) profiles in ASCL1-positive lung adenocarcinomas and identified several miRNAs closely associated with ASCL1 expression, including miR-375, miR-95-3p/miR-95-5p, miR-124-3p, and members of the miR-17~92 family. Similar to small cell lung cancer, Yes1 associated transcriptional regulator (YAP1), a representative miR-375 target gene, was suppressed in ASCL1-positive lung adenocarcinomas. ASCL1 knockdown followed by miRNA profiling in a cell culture model further revealed that ASCL1 positively regulates miR-124-3p and members of the miR-17~92 family. Integrative transcriptomic analyses identified ZFP36 ring finger protein like 1 (ZFP36L1) as a target gene of miR-124-3p, and immunohistochemical studies demonstrated that ASCL1-positive lung adenocarcinomas are associated with low ZFP36L1 protein levels. Cell culture studies showed that ectopic ZFP36L1 expression inhibits cell proliferation, survival, and cell cycle progression. Moreover, ZFP36L1 negatively regulated several genes including E2F transcription factor 1 (E2F1) and snail family transcriptional repressor 1 (SNAI1). In conclusion, our study revealed that suppression of ZFP36L1 via ASCL1-regulated miR-124-3p could modulate gene expression., providing evidence that ASCL1-mediated regulation of miRNAs shapes molecular features of ASCL1-positive lung adenocarcinomas. Implications: Our study revealed unique miRNA profiles of ASCL1-positive lung adenocarcinomas and identified ASCL1-regulated miRNAs with functional relevance.

    DOI: 10.1158/1541-7786.MCR-23-0229

    Web of Science

    Scopus

    PubMed

  4. Systematic characterization of seed overlap microRNA cotargeting associated with lupus pathogenesis. Reviewed International journal

    Hiroki Kitai, Noritoshi Kato, Koichi Ogami, Shintaro Komatsu, Yu Watanabe, Seiko Yoshino, Eri Koshi, Shoma Tsubota, Yoshio Funahashi, Takahiro Maeda, Kazuhiro Furuhashi, Takuji Ishimoto, Tomoki Kosugi, Shoichi Maruyama, Kenji Kadomatsu, Hiroshi I Suzuki

    BMC biology   Vol. 20 ( 1 ) page: 248 - 248   2022.11

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    BACKGROUND: Combinatorial gene regulation by multiple microRNAs (miRNAs) is widespread and closely spaced target sites often act cooperatively to achieve stronger repression ("neighborhood" miRNA cotargeting). While miRNA cotarget sites are suggested to be more conserved and implicated in developmental control, the pathological significance of miRNA cotargeting remains elusive. RESULTS: Here, we report the pathogenic impacts of combinatorial miRNA regulation on inflammation in systemic lupus erythematosus (SLE). In the SLE mouse model, we identified the downregulation of two miRNAs, miR-128 and miR-148a, by TLR7 stimulation in plasmacytoid dendritic cells. Functional analyses using human cell lines demonstrated that miR-128 and miR-148a additively target KLF4 via extensively overlapping target sites ("seed overlap" miRNA cotargeting) and suppress the inflammatory responses. At the transcriptome level, "seed overlap" miRNA cotargeting increases susceptibility to downregulation by two miRNAs, consistent with additive but not cooperative recruitment of two miRNAs. Systematic characterization further revealed that extensive "seed overlap" is a prevalent feature among broadly conserved miRNAs. Highly conserved target sites of broadly conserved miRNAs are largely divided into two classes-those conserved among eutherian mammals and from human to Coelacanth, and the latter, including KLF4-cotargeting sites, has a stronger association with both "seed overlap" and "neighborhood" miRNA cotargeting. Furthermore, a deeply conserved miRNA target class has a higher probability of haplo-insufficient genes. CONCLUSIONS: Our study collectively suggests the complexity of distinct modes of miRNA cotargeting and the importance of their perturbations in human diseases.

    DOI: 10.1186/s12915-022-01447-4

    Web of Science

    Scopus

    PubMed

  5. The molecular understanding of super-enhancer dysregulation in cancer Reviewed

    Yoshino Seiko, Suzuki Hiroshi I.

    NAGOYA JOURNAL OF MEDICAL SCIENCE   Vol. 84 ( 2 ) page: 216 - 229   2022.5

     More details

    Authorship:Lead author   Language:English   Publisher:Nagoya Journal of Medical Science  

    Abnormalities in the regulation of gene expression are associated with various pathological conditions. Among the distal regulatory elements in the genome, the activation of target genes by enhancers plays a central role in the formation of cell type–specific gene expression patterns. Super-enhancers are a subclass of enhancers that frequently contain multiple enhancer-like elements and are characterized by dense binding of master transcription factors and Mediator complexes and high signals of active histone marks. Superenhancers have been studied in detail as important regulatory regions that control cell identity and contribute to the pathogenesis of diverse diseases. In cancer, super-enhancers have multifaceted roles by activating various oncogenes and other cancer-related genes and shaping characteristic gene expression patterns in cancer cells. Alterations in super-enhancer activities in cancer involve multiple mechanisms, including the dysregulation of transcription factors and the super-enhancer–associated genomic abnormalities. The study of super-enhancers could contribute to the identification of effective biomarkers and the development of cancer therapeutics targeting transcriptional addiction. In this review, we summarize the roles of super-enhancers in cancer biology, with a particular focus on hematopoietic malignancies, in which multiple super-enhancer alteration mechanisms have been reported.

    DOI: 10.18999/nagjms.84.2.216

    Web of Science

    Scopus

    PubMed

▼display all

MISC 10

  1. 生体分子凝集体と染色体外環状DNA (Bio Clinica 2023年7月号転載)

    芳野 聖子、鈴木 洋

    月刊「アレルギー リウマチ性疾患」   Vol. 45 ( 4 ) page: 73 - 77   2025.4

     More details

    Authorship:Lead author  

  2. 生体分子凝集体と染色体外環状DNA (Bio Clinica 2023年7月号転載)

    芳野 聖子、鈴木 洋

    月刊「アレルギー リウマチ性疾患」   Vol. 45 ( 2 ) page: 77 - 81   2025.2

     More details

    Authorship:Lead author  

  3. 生体分子凝集体と染色体外環状DNA (Bio Clinica 2023年7月号転載)

    芳野 聖子、鈴木 洋

    Bio Clinica臨時増刊号   Vol. 39 ( 14 ) page: 56 - 61   2024.12

     More details

    Authorship:Lead author  

  4. 生体分子凝集体と染色体外環状DNA (Bio Clinica 2023年7月号転載)

    芳野 聖子、鈴木 洋

    月刊「細胞」臨時増刊号   Vol. 56 ( 14 ) page: 58 - 62   2024.12

     More details

    Authorship:Lead author  

  5. 生体分子凝集体と染色体外環状DNA (Bio Clinica 2023年7月号転載)

    芳野 聖子, 鈴木 洋

    月刊細胞   Vol. 56 ( 6 ) page: 43 - 47   2024.6

     More details

    Authorship:Lead author  

▼display all

Research Project for Joint Research, Competitive Funding, etc. 3

  1. 武田科学振興財団医学系研究助成(がん領域・基礎)

    2024 - 2028

    染色体外環状DNA陽性がんにおける新規生存必須遺伝子の機能解明

      More details

    Authorship:Principal investigator 

  2. 日比野基金医学研究助成

    2022

    Extrachromosomal circular DNAを標的にした新規がん治療薬の探索と同定

      More details

    Authorship:Principal investigator 

  3. 上原記念生命科学財団 研究奨励金

    2021

    AMLにおけるTRIB1のスーパーエンハンサー制御

    芳野 聖子

      More details

    Authorship:Principal investigator 

KAKENHI (Grants-in-Aid for Scientific Research) 4

  1. 染色体外DNAを介したがん特異的転写制御メカニズムの解明

    Grant number:25K10464  2025.4 - 2028.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    芳野 聖子

      More details

    Authorship:Principal investigator 

  2. 染色体外環状DNAによるがん悪性化進展機構の解明と治療標的としての可能性

    Grant number:22K07210  2022.4 - 2025.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    芳野 聖子

      More details

    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    近年、がん細胞には染色体外環状DNA(eccDNA)が広範に存在することが報告され、がんの増殖や不均一性との関連が示唆されている。重要なことに、eccDNAを介したがん遺伝子の増幅は、正常組織ではほとんど見られない。一方で、様々ながん種におけるeccDNAの構造の違いやがん細胞の生存・増殖への影響については、依然として不明な点が多く存在する。本研究では、eccDNAを様々ながん種で包括的に解析し、がん細胞における生物学的特性を解明することで、がん治療標的としての可能性を明らかにするとともに、がん特異的な治療薬の同定に繋げることを目的とする。

  3. AML malignant mechanism by enhancer reprogramming of Trib1

    Grant number:20K16318  2020.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Early-Career Scientists

    Yoshino Seiko

      More details

    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    Down syndrome is caused by trisomy of chromosome 21 and is the most frequent genetic disorder arising from chromosomal abnormality. Trib1 pseudokinase acts as a collaborator of Hoxa9/Meis1 in leukemogenesis, inducing enhancement of MAPK signals and degradation of C/EBPa. Ts1Cje, a mouse model for DS, is trisomic for approximately 70 genes of human chromosome 21. Here, we aimed to introduce Trib1 in Ts1Cje mice to examine whether the expression of Trib1 cooperates with trisomy 21 in the development of leukemia. Expression of both wild type and R107L Trib1 in Ts1Cje bone marrow cells significantly accelerated disease onset of AML. Additionaly, AML cell lines expressing wild type Trib1 were generated in Ts1Cje and B6 bone marrow cells. Gene set enrichment analysis showed the enrichment of the target gene sets of the posterior Hoxa cluster. These data strongly suggest the importance of TRIB1-associated signaling in the transformation and/or malignant progression of DS-related leukemia.

  4. Trib1 functions as a critical epigenetic regulator in AML

    Grant number:18K15227  2018.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

    Yoshino Seiko

      More details

    Authorship:Principal investigator 

    The pseudokinase Trib1 functions as a myeloid oncogene that recruits the ubiquitin ligase COP1 to C/EBPα and interacts with MEK1 to enhance ERK phosphorylation. Close genetic interaction between Trib1 and Hoxa9 have been observed in myeloid leukemogenesis. Herein, we provide evidence that Trib1 modulates Hoxa9-associated super-enhancers. ChIP-seq analysis identified increased H3K27Ac signals at super-enhancers of the Erg, Spns2, Rgl1, and Pik3cd loci, as well as increased mRNA expression. Modification of super-enhancer activity was mostly achieved via p42-specific degradation of C/EBPα by Trib1. Silencing of Erg abrogated the growth advantage acquired by Trib1 overexpression, indicating that Erg is a critical downstream target. Moreover, treatment with a BRD4 inhibitor JQ1 showed growth inhibition in a Trib1/Erg-dependent manner both in vitro and in vivo. Collectively, our study demonstrates a novel mechanism of Trib1 in modulations of chromatin and Hoxa9-driven transcription.