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  1. Article ; Online: Endothelial tissue remodeling induced by intraluminal pressure enhances paracellular solute transport

    Jean Cacheux / Aurélien Bancaud / Daniel Alcaide / Jun-Ichi Suehiro / Yoshihiro Akimoto / Hiroyuki Sakurai / Yukiko T. Matsunaga

    iScience, Vol 26, Iss 7, Pp 107141- (2023)

    2023  

    Abstract: Summary: The endothelial layers of the microvasculature regulate the transport of solutes to the surrounding tissues. It remains unclear how this barrier function is affected by blood flow-induced intraluminal pressure. Using a 3D microvessel model, we ... ...

    Abstract Summary: The endothelial layers of the microvasculature regulate the transport of solutes to the surrounding tissues. It remains unclear how this barrier function is affected by blood flow-induced intraluminal pressure. Using a 3D microvessel model, we compare the transport of macromolecules through endothelial tissues at mechanical rest or with intraluminal pressure, and correlate these data with electron microscopy of endothelial junctions. On application of an intraluminal pressure of 100 Pa, we demonstrate that the flow through the tissue increases by 2.35 times. This increase is associated with a 25% expansion of microvessel diameter, which leads to tissue remodeling and thinning of the paracellular junctions. We recapitulate these data with the deformable monopore model, in which the increase in paracellular transport is explained by the augmentation of the diffusion rate across thinned junctions under mechanical stress. We therefore suggest that the deformation of microvasculatures contributes to regulate their barrier function.
    Keywords Bioengineering ; Tissue engineering ; Cell biology ; Biomechanics ; Computer modeling ; Science ; Q
    Language English
    Publishing date 2023-07-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Endothelial tissue remodeling induced by intraluminal pressure enhances paracellular solute transport.

    Cacheux, Jean / Bancaud, Aurélien / Alcaide, Daniel / Suehiro, Jun-Ichi / Akimoto, Yoshihiro / Sakurai, Hiroyuki / Matsunaga, Yukiko T

    iScience

    2023  Volume 26, Issue 7, Page(s) 107141

    Abstract: The endothelial layers of the microvasculature regulate the transport of solutes to the surrounding tissues. It remains unclear how this barrier function is affected by blood flow-induced intraluminal pressure. Using a 3D microvessel model, we compare ... ...

    Abstract The endothelial layers of the microvasculature regulate the transport of solutes to the surrounding tissues. It remains unclear how this barrier function is affected by blood flow-induced intraluminal pressure. Using a 3D microvessel model, we compare the transport of macromolecules through endothelial tissues at mechanical rest or with intraluminal pressure, and correlate these data with electron microscopy of endothelial junctions. On application of an intraluminal pressure of 100 Pa, we demonstrate that the flow through the tissue increases by 2.35 times. This increase is associated with a 25% expansion of microvessel diameter, which leads to tissue remodeling and thinning of the paracellular junctions. We recapitulate these data with the deformable monopore model, in which the increase in paracellular transport is explained by the augmentation of the diffusion rate across thinned junctions under mechanical stress. We therefore suggest that the deformation of microvasculatures contributes to regulate their barrier function.
    Language English
    Publishing date 2023-06-15
    Publishing country United States
    Document type Journal Article
    ISSN 2589-0042
    ISSN (online) 2589-0042
    DOI 10.1016/j.isci.2023.107141
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Acute myocarditis secondary to

    Suehiro, Wako / Nishio, Ryo / Noiri, Jun-Ichi / Takeshige, Ryo / Konishi, Hiroki / Matsuzoe, Hiroki / Matsumoto, Akinori / Ozawa, Makito / Matsumoto, Daisuke / Inaba, Mayumi / Takaishi, Hiroshi

    Journal of cardiology cases

    2023  Volume 28, Issue 5, Page(s) 185–188

    Abstract: Acute myocarditis is a rare complication of : Learning objective: Acute myocarditis is a rare but important complication ... ...

    Abstract Acute myocarditis is a rare complication of
    Learning objective: Acute myocarditis is a rare but important complication of
    Language English
    Publishing date 2023-07-01
    Publishing country Japan
    Document type Case Reports
    ISSN 1878-5409
    ISSN (online) 1878-5409
    DOI 10.1016/j.jccase.2023.06.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Lysine demethylase 2B regulates angiogenesis via Jumonji C dependent suppression of angiogenic transcription factors

    Sasaki, Yuji / Higashijima, Yoshiki / Suehiro, Jun-Ichi / Sugasawa, Takehito / Oguri-Nakamura, Eri / Fukuhara, Shigetomo / Nagai, Nao / Hirakawa, Yosuke / Wada, Youichiro / Nangaku, Masaomi / Kanki, Yasuharu

    Biochemical and biophysical research communications. 2022 May 21, v. 605

    2022  

    Abstract: Vascular endothelial growth factor (VEGF) signaling plays a central role in vascular development and maintenance of vascular homeostasis. In endothelial cells (ECs), VEGF activates the gene expression of angiogenic transcription factors (TFs), followed ... ...

    Abstract Vascular endothelial growth factor (VEGF) signaling plays a central role in vascular development and maintenance of vascular homeostasis. In endothelial cells (ECs), VEGF activates the gene expression of angiogenic transcription factors (TFs), followed by induction of downstream angiogenic responsive genes. Recent findings support that histone modification dynamics contribute to the transcriptional control of genes that are important for EC functions. Lysine demethylase 2B (KDM2B) demethylates histone H3K4me3 and H3K36me2/3 and mediates the monoubiquitination of histone H2AK119. KDM2B functions as a transcriptional repressor in somatic cell reprogramming and tumor development. However, the role of KDM2B in VEGF signaling remains to be elucidated. Here, we show that KDM2B knockdown enhances VEGF-induced angiogenesis in cultured human ECs via increased migration and proliferation. In contrast, ectopic expression of KDM2B inhibits angiogenesis. The function of KDM2B may depend on its catalytic Jumonji C domain. Genome-wide analysis further reveals that KDM2B selectively controls the transcription of VEGF-induced angiogenic TFs that are associated with increased H3K4me3/H3K36me3 and decreased H2AK119ub. These findings suggest an essential role of KDM2B in VEGF signaling in ECs. As dysregulation of VEGF signaling in ECs is involved in various diseases, including cancer, KDM2B may be a potential therapeutic target in VEGF-mediated vasculopathic diseases.
    Keywords angiogenesis ; gene expression ; genome-wide association study ; histone code ; histones ; homeostasis ; humans ; lysine ; neoplasms ; repressor proteins ; research ; somatic cells ; therapeutics ; transcription (genetics) ; vascular endothelial growth factors
    Language English
    Dates of publication 2022-0521
    Size p. 16-23.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 205723-2
    ISSN 0006-291X ; 0006-291X
    ISSN (online) 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2022.03.054
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Involvement of GLCCI1 in mouse spermatogenesis.

    Takada, Masaru / Fukuhara, Daisuke / Takiura, Toshihiko / Nishibori, Yukino / Kotani, Masashi / Kiuchi, Zentaro / Kudo, Akihiko / Beltcheva, Olga / Ito-Nitta, Noriko / Nitta, Kazuhiro R / Kimura, Toru / Suehiro, Jun-Ichi / Katada, Tomohisa / Takematsu, Hiromu / Yan, Kunimasa

    FASEB journal : official publication of the Federation of American Societies for Experimental Biology

    2022  Volume 37, Issue 1, Page(s) e22680

    Abstract: Spermatid production is a complex regulatory process in which coordination between hormonal control and apoptosis plays a pivotal role in maintaining a balanced number of sperm cells. Apoptosis in spermatogenesis is controlled by pro-apoptotic and anti- ... ...

    Abstract Spermatid production is a complex regulatory process in which coordination between hormonal control and apoptosis plays a pivotal role in maintaining a balanced number of sperm cells. Apoptosis in spermatogenesis is controlled by pro-apoptotic and anti-apoptotic molecules. Hormones involved in the apoptotic process during spermatogenesis include gonadotrophins, sex hormones, and glucocorticoid (GC). GC acts broadly as an apoptosis inducer by binding to its receptor (glucocorticoid receptor: GR) during organ development processes, such as spermatogenesis. However, the downstream pathway induced in GC-GR signaling and the apoptotic process during spermatogenesis remains poorly understood. We reported previously that GC induces full-length glucocorticoid-induced transcript 1 (GLCCI1-long), which functions as an anti-apoptotic mediator in thymic T cell development. Here, we demonstrate that mature murine testis expresses a novel isoform of GLCCI1 protein (GLCCI1-short) in addition to GLCCI1-long. We demonstrate that GLCCI1-long is expressed in spermatocytes along with GR. In contrast, GLCCI1-short is primarily expressed in spermatids where GR is absent; instead, the estrogen receptor is expressed. GLCCI1-short also binds to LC8, which is a known mediator of the anti-apoptotic effect of GLCCI1-long. A luciferase reporter assay revealed that β-estradiol treatment synergistically increased Glcci1-short promotor-driven luciferase activity in Erα-overexpressing cells. Together with the evidence that the conversion of testosterone to estrogen is preceded by aromatase expression in spermatids, we hypothesize that estrogen induces GLCCI1-short, which, in turn, may function as a novel anti-apoptotic mediator in mature murine testis.
    MeSH term(s) Male ; Mice ; Animals ; Glucocorticoids ; Semen ; Spermatogenesis ; Spermatids ; Estrogens
    Chemical Substances Glucocorticoids ; Estrogens
    Language English
    Publishing date 2022-11-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 639186-2
    ISSN 1530-6860 ; 0892-6638
    ISSN (online) 1530-6860
    ISSN 0892-6638
    DOI 10.1096/fj.202101667RR
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Lysine demethylase 2B regulates angiogenesis via Jumonji C dependent suppression of angiogenic transcription factors.

    Sasaki, Yuji / Higashijima, Yoshiki / Suehiro, Jun-Ichi / Sugasawa, Takehito / Oguri-Nakamura, Eri / Fukuhara, Shigetomo / Nagai, Nao / Hirakawa, Yosuke / Wada, Youichiro / Nangaku, Masaomi / Kanki, Yasuharu

    Biochemical and biophysical research communications

    2022  Volume 605, Page(s) 16–23

    Abstract: Vascular endothelial growth factor (VEGF) signaling plays a central role in vascular development and maintenance of vascular homeostasis. In endothelial cells (ECs), VEGF activates the gene expression of angiogenic transcription factors (TFs), followed ... ...

    Abstract Vascular endothelial growth factor (VEGF) signaling plays a central role in vascular development and maintenance of vascular homeostasis. In endothelial cells (ECs), VEGF activates the gene expression of angiogenic transcription factors (TFs), followed by induction of downstream angiogenic responsive genes. Recent findings support that histone modification dynamics contribute to the transcriptional control of genes that are important for EC functions. Lysine demethylase 2B (KDM2B) demethylates histone H3K4me3 and H3K36me2/3 and mediates the monoubiquitination of histone H2AK119. KDM2B functions as a transcriptional repressor in somatic cell reprogramming and tumor development. However, the role of KDM2B in VEGF signaling remains to be elucidated. Here, we show that KDM2B knockdown enhances VEGF-induced angiogenesis in cultured human ECs via increased migration and proliferation. In contrast, ectopic expression of KDM2B inhibits angiogenesis. The function of KDM2B may depend on its catalytic Jumonji C domain. Genome-wide analysis further reveals that KDM2B selectively controls the transcription of VEGF-induced angiogenic TFs that are associated with increased H3K4me3/H3K36me3 and decreased H2AK119ub. These findings suggest an essential role of KDM2B in VEGF signaling in ECs. As dysregulation of VEGF signaling in ECs is involved in various diseases, including cancer, KDM2B may be a potential therapeutic target in VEGF-mediated vasculopathic diseases.
    MeSH term(s) Cell Proliferation ; Endothelial Cells/metabolism ; F-Box Proteins/genetics ; F-Box Proteins/metabolism ; Histones/metabolism ; Humans ; Jumonji Domain-Containing Histone Demethylases/genetics ; Jumonji Domain-Containing Histone Demethylases/metabolism ; Lysine/metabolism ; Transcription Factors/metabolism ; Vascular Endothelial Growth Factor A/genetics ; Vascular Endothelial Growth Factor A/metabolism
    Chemical Substances F-Box Proteins ; Histones ; Transcription Factors ; Vascular Endothelial Growth Factor A ; Jumonji Domain-Containing Histone Demethylases (EC 1.14.11.-) ; Lysine (K3Z4F929H6)
    Language English
    Publishing date 2022-03-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 205723-2
    ISSN 1090-2104 ; 0006-291X ; 0006-291X
    ISSN (online) 1090-2104 ; 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2022.03.054
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Bivalent-histone-marked immediate-early gene regulation is vital for VEGF-responsive angiogenesis

    Yasuharu Kanki / Masashi Muramatsu / Yuri Miyamura / Kenta Kikuchi / Yoshiki Higashijima / Ryo Nakaki / Jun-ichi Suehiro / Yuji Sasaki / Yoshiaki Kubota / Haruhiko Koseki / Hiroshi Morioka / Tatsuhiko Kodama / Mitsuyoshi Nakao / Daisuke Kurotaki / Hiroyuki Aburatani / Takashi Minami

    Cell Reports, Vol 38, Iss 6, Pp 110332- (2022)

    2022  

    Abstract: Summary: Endothelial cells (ECs) are phenotypically heterogeneous, mainly due to their dynamic response to the tissue microenvironment. Vascular endothelial cell growth factor (VEGF), the best-known angiogenic factor, activates calcium-nuclear factor of ... ...

    Abstract Summary: Endothelial cells (ECs) are phenotypically heterogeneous, mainly due to their dynamic response to the tissue microenvironment. Vascular endothelial cell growth factor (VEGF), the best-known angiogenic factor, activates calcium-nuclear factor of activated T cells (NFAT) signaling following acute angiogenic gene transcription. Here, we evaluate the global mapping of VEGF-mediated dynamic transcriptional events, focusing on major histone-code profiles using chromatin immunoprecipitation sequencing (ChIP-seq). Remarkably, the gene loci of immediate-early angiogenic transcription factors (TFs) exclusively acquire bivalent H3K4me3-H3K27me3 double-positive histone marks after the VEGF stimulus. Moreover, NFAT-associated Pax transactivation domain-interacting protein (PTIP) directs bivalently marked TF genes transcription through a limited polymerase II running. The non-canonical polycomb1 variant PRC1.3 specifically binds to and allows the transactivation of PRC2-enriched bivalent angiogenic TFs until conventional PRC1-mediated gene silencing is achieved. Knockdown of these genes abrogates post-natal aberrant neovessel formation via the selective inhibition of indispensable bivalent angiogenic TF gene transcription. Collectively, the reported dynamic histone mark landscape may uncover the importance of immediate-early genes and the development of advanced anti-angiogenic strategies.
    Keywords VEGF ; endothelial cells ; bivalent histone marks ; noncanonical polycomb ; PTIP ; angiogenesis ; Biology (General) ; QH301-705.5
    Subject code 572
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Bivalent-histone-marked immediate-early gene regulation is vital for VEGF-responsive angiogenesis.

    Kanki, Yasuharu / Muramatsu, Masashi / Miyamura, Yuri / Kikuchi, Kenta / Higashijima, Yoshiki / Nakaki, Ryo / Suehiro, Jun-Ichi / Sasaki, Yuji / Kubota, Yoshiaki / Koseki, Haruhiko / Morioka, Hiroshi / Kodama, Tatsuhiko / Nakao, Mitsuyoshi / Kurotaki, Daisuke / Aburatani, Hiroyuki / Minami, Takashi

    Cell reports

    2022  Volume 38, Issue 6, Page(s) 110332

    Abstract: Endothelial cells (ECs) are phenotypically heterogeneous, mainly due to their dynamic response to the tissue microenvironment. Vascular endothelial cell growth factor (VEGF), the best-known angiogenic factor, activates calcium-nuclear factor of activated ...

    Abstract Endothelial cells (ECs) are phenotypically heterogeneous, mainly due to their dynamic response to the tissue microenvironment. Vascular endothelial cell growth factor (VEGF), the best-known angiogenic factor, activates calcium-nuclear factor of activated T cells (NFAT) signaling following acute angiogenic gene transcription. Here, we evaluate the global mapping of VEGF-mediated dynamic transcriptional events, focusing on major histone-code profiles using chromatin immunoprecipitation sequencing (ChIP-seq). Remarkably, the gene loci of immediate-early angiogenic transcription factors (TFs) exclusively acquire bivalent H3K4me3-H3K27me3 double-positive histone marks after the VEGF stimulus. Moreover, NFAT-associated Pax transactivation domain-interacting protein (PTIP) directs bivalently marked TF genes transcription through a limited polymerase II running. The non-canonical polycomb1 variant PRC1.3 specifically binds to and allows the transactivation of PRC2-enriched bivalent angiogenic TFs until conventional PRC1-mediated gene silencing is achieved. Knockdown of these genes abrogates post-natal aberrant neovessel formation via the selective inhibition of indispensable bivalent angiogenic TF gene transcription. Collectively, the reported dynamic histone mark landscape may uncover the importance of immediate-early genes and the development of advanced anti-angiogenic strategies.
    MeSH term(s) Angiogenesis Inducing Agents/metabolism ; Animals ; Chromatin Immunoprecipitation ; Chromatin Immunoprecipitation Sequencing ; Endothelial Cells/metabolism ; Epigenesis, Genetic/genetics ; Gene Silencing/physiology ; Genes, Immediate-Early/genetics ; Histones/metabolism ; Humans ; Mice ; Neovascularization, Pathologic/genetics ; Promoter Regions, Genetic/genetics ; Vascular Endothelial Growth Factor A/metabolism
    Chemical Substances Angiogenesis Inducing Agents ; Histones ; Vascular Endothelial Growth Factor A
    Language English
    Publishing date 2022-02-06
    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.2022.110332
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: A wide QRS complex tachycardia utilizing an atypical accessory pathway in latent Wolff-Parkinson-White syndrome: Manifestation of anterograde conduction during atrial fibrillation without delta waves in sinus rhythm.

    Nakamura, Toshihiro / Fukuzawa, Koji / Kurose, Jun / Suehiro, Hideya / Matsumoto, Kensuke / Hirata, Ken-Ichi

    HeartRhythm case reports

    2019  Volume 5, Issue 8, Page(s) 419–423

    Language English
    Publishing date 2019-05-22
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2834871-0
    ISSN 2214-0271
    ISSN 2214-0271
    DOI 10.1016/j.hrcr.2019.05.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Prostate Cancer Cells in Different Androgen Receptor Status Employ Different Leucine Transporters.

    Otsuki, Hideo / Kimura, Toru / Yamaga, Takashi / Kosaka, Takeo / Suehiro, Jun-Ichi / Sakurai, Hiroyuki

    The Prostate

    2016  Volume 77, Issue 2, Page(s) 222–233

    Abstract: Background: Leucine stimulates cancer cell proliferation through the mTOR pathway, therefore, inhibiting leucine transporters may be a novel therapeutic target for cancer. L-type amino acid transporter (LAT) 1, a Na: Methods: LNCaP and DU145 and PC-3 ...

    Abstract Background: Leucine stimulates cancer cell proliferation through the mTOR pathway, therefore, inhibiting leucine transporters may be a novel therapeutic target for cancer. L-type amino acid transporter (LAT) 1, a Na
    Methods: LNCaP and DU145 and PC-3 cell lines were used as a model of androgen dependent, and metastatic prostate cancer. A new "LN-cr" cell line was established after culturing LNCaP cells for 6 months under androgen-free conditions, which is considered a model of castration resistant prostate cancer (CRPC) with androgen AR expression. The expression of leucine transporters was investigated with quantitative PCR and immunofluorescence. Uptake of
    Results: Cell viability showed a 90% decrease in the absence of leucine in all four cell lines. LNCaP cells principally expressed LAT3, and their leucine uptake was more than 90% Na
    Conclusions: New CRPC cell line with increased expression of y
    MeSH term(s) Amino Acid Transport Systems/metabolism ; Cell Line, Tumor ; Cell Survival/physiology ; Humans ; Leucine/metabolism ; Male ; Prostatic Neoplasms, Castration-Resistant/metabolism ; Prostatic Neoplasms, Castration-Resistant/pathology ; Receptors, Androgen/metabolism
    Chemical Substances AR protein, human ; Amino Acid Transport Systems ; Receptors, Androgen ; Leucine (GMW67QNF9C)
    Language English
    Publishing date 2016-10-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604707-5
    ISSN 1097-0045 ; 0270-4137
    ISSN (online) 1097-0045
    ISSN 0270-4137
    DOI 10.1002/pros.23263
    Database MEDical Literature Analysis and Retrieval System OnLINE

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