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2017 Fiscal Year Annual Research Report

Investigation of the significance of MRTF-A, a co-activator of SRF, in the development of obesity that is an underlying risk factor for cardiovascular diseases

Research Project

Project/Area Number 16K15442
Research InstitutionShinshu University

Principal Investigator

桑原 宏一郎  信州大学, 学術研究院医学系, 教授 (30402887)

Project Period (FY) 2016-04-01 – 2018-03-31
Keywords分子心臓学 / 転写因子 / 脂肪分化 / 肥満
Outline of Annual Research Achievements

本研究は、Rhoシグナル下流でSRFを活性化する転写共役因子MRTF-Aの、肥満症・メタボリックシンドローム発症分子基盤である脂肪細胞分化、脂肪蓄積における意義を明らかにし、その心血管病発症基盤形成における役割を同定することを目的とする。本年度は昨年度に引き続き、MRTF-A KOマウスを用いて、高脂肪食負荷および肥満モデルマウスであるdb/dbマウスとの交配を行い、その脂肪蓄積、耐糖能異常に関する解析を詳細に行った。高脂肪食負荷MRTF-Aノックアウトマウスでは野生型に比し、体重増加量の低下、内臓脂肪重量の低下、CTによる腹腔内脂肪量の低下が確認された。また摂餌量には変化はない一方で、代謝ゲージでの解析で酸素消費量の増加を認め、エネルギー消費の増加が脂肪蓄積減少の一因と考えられた。脂肪組織の検討では、脂肪細胞サイズや繊維化に著明な変化はないが、炎症細胞浸潤は減少傾向を認めた。血中脂質プロファイルには明らかな差は認められなかったが、糖代謝はMRTF-Aノックアウトマウスでは改善していた。またMRTF-Aノックアウトマウスとdb/dbマウスとの交配においても、db/dbマウスと比較して体重増加が少なく、脂肪蓄積が少ないことを確認した。加えてNIH3T3-L1細胞、脂肪由来幹細胞などを用いた解析によりMRTF-Aの発現は脂肪前駆細胞に多く、脂肪分化とともに低下していくことを確認した。以上の結果からMRTF-Aの肥満、糖代謝異常における意義が示唆され、ノックアウトマウスの脂肪組織における遺伝子発現変化のRNAseqによる解析を行い、そこで変化していた複数の分子に関してその意義を検討した。また白色脂肪細胞からベージュ脂肪細胞への分化が亢進している可能性を考え、そのマーカー分子の発現を解析すると共に、UCP1ノックアウトマウスとの交配を開始した。

  • Research Products

    (19 results)

All 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 8 results) Presentation (7 results) (of which Int'l Joint Research: 6 results) Remarks (1 results)

  • [Int'l Joint Research] Michigan State University/University of Texas(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Michigan State University/University of Texas
  • [Int'l Joint Research] Academic Medical Center(Netherlands)

    • Country Name
      Netherlands
    • Counterpart Institution
      Academic Medical Center
  • [Journal Article] Rats deficient C-type natriuretic peptide suffer from impaired skeletal growth without early death.2018

    • Author(s)
      Fujii T, Hirota K, Yasoda A, Takizawa A, Morozumi N, Nakamura R, Yotsumoto T, Kondo E, Yamashita Y, Sakane Y, Kanai Y, Ueda Y, Yamauchi I, Yamanaka S, Nakao K, Kuwahara K, Jindo T, Furuya M, Mashimo T, Inagaki N, Serikawa T, Nakao K.
    • Journal Title

      PLoS One

      Volume: 13 Pages: e0194812

    • DOI

      10.1371/journal.pone.0194812.

    • Peer Reviewed / Open Access
  • [Journal Article] Macro-pro-B-type natriuretic peptide (proBNP) and hidden macro-N-terminal proBNP: Case report.2018

    • Author(s)
      Nakagawa Y, Nishikimi T, Sakai H, Ohno S, Kinoshita H, Inazumi H, Moriuchi K, Kuwahara K, Horie M, Kimura T
    • Journal Title

      Clin Biochem

      Volume: 52 Pages: 148-152

    • DOI

      10.1016/j.clinbiochem.2017.10.019.

    • Peer Reviewed
  • [Journal Article] Impact of extracellular matrix on engraftment and maturation of pluripotent stem cell-derived cardiomyocytes in a rat myocardial infarct model.2017

    • Author(s)
      Ogasawara T, Okano S, Ichimura H, Kadota S, Tanaka Y, Minami I, Uesugi M, Wada Y, Saito N, Okada K, Kuwahara K, Shiba Y
    • Journal Title

      Sci Rep

      Volume: 7 Pages: 8630

    • DOI

      10.1038/s41598-017-09217-x.

    • Peer Reviewed / Open Access
  • [Journal Article] Kyoto Congestive Heart Failure (KCHF) Study: Rationale and Design2017

    • Author(s)
      Yamamoto E, Kato T, Ozasa N, Yaku H, Inuzuka Y, Tamaki Y, Kitai T, Morimoto T, Taniguchi R, Iguchi M, Kato M, Takahashi M, Jinnai T, Ikeda T, Nagao K, Kawai T, Komasa A,Nishikawa R, Kawase Y, Morinaga T,Kawashima T, Motohashi Y, Kawato M, Toyofuku M, Sato Y, Kuwahara K, et al.
    • Journal Title

      ESC Heart Fail

      Volume: 4 Pages: 216-223

    • DOI

      10.1002/ehf2.12138

    • Peer Reviewed / Open Access
  • [Journal Article] Impressive predictive value of ankle-brachial index for very long-term outcomes in patients with cardiovascular disease: IMPACT-ABI study.2017

    • Author(s)
      Miura T, Minamisawa M, Ueki Y, Abe N, Nishimura H, Hashizume N, Mochidome T, Harada M, Oguchi Y, Yoshie K, Shoin W, Saigusa T, Ebisawa S, Motoki H, Koyama J, Ikeda U, Kuwahara K.
    • Journal Title

      PLoS One

      Volume: 12 Pages: e0177609

    • DOI

      10.1371/journal.pone.0177609

    • Peer Reviewed / Open Access
  • [Journal Article] Efficacy and Safety of an Orally Administered Selective Prostacyclin Receptor Agonist, Selexipag, in Japanese Patients With Pulmonary Arterial Hypertension.2017

    • Author(s)
      Tanabe N, Ikeda S, Tahara N, Fukuda K, Hatano M, Ito H, Nakayama T, Anzai T, Hashimoto A, Inoue T, Kajinami K, Kihara Y, Kinoshita H, Kuwahara K, Murohara T, Okazaki O, Sakai S, Satoh T, Takeda Y, Takeishi Y, Taniguchi M, Watanabe H, Yamamoto T, Yamauchi-Takihara K, Yoshioka K, Sasayama S.
    • Journal Title

      Circ J.

      Volume: 81 Pages: 1360-1367

    • DOI

      10.1253/circj.CJ-16-1282

    • Peer Reviewed / Open Access
  • [Journal Article] B-Type Natriuretic Peptide in Heart Failure With Preserved Ejection Fraction - Relevance to Age-Related Left Ventricular Modeling in Japanese.2017

    • Author(s)
      Harada E, Mizuno Y, Kugimiya F, Shono M, Maeda H, Yano N, Kuwahara K, Yasue H.
    • Journal Title

      Circ J

      Volume: 81 Pages: 1006-1013

    • DOI

      10.1253/circj.CJ-16-1282.

    • Peer Reviewed / Open Access
  • [Journal Article] MiR30-GALNT1/2 axis-mediated glycosylation contributes to the increased secretion of inactive human pro-BNP from failing hearts.2017

    • Author(s)
      Nakagawa Y, Nishikimi T, Kuwahara K, Fujishima A, Oka S, Tsutamoto T, Kinoshita H, Nakao K, Cho K, Inazumi H, Okamoto H, Nishida M, Kato T, Fukushima H, Yamashita J, Wijnen WJ, Creemers EE, Kangawa K, Minamino N, Nakao K, Kimura T.
    • Journal Title

      J Am Heart Assoc

      Volume: 6 Pages: e0003601

    • DOI

      10.1161/JAHA.116.003601

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Endothelium-derived C-type natriuretic peptide contributes to blood pressure regulation by maintaining endothelial integrity.2017

    • Author(s)
      Nakao K, Kuwahara K, Nishikimi T, Nakagawa Y, Kinoshita H, Minami T, Kuwabara Y, Yamada C, Yamada Y, Tokudome T, Nagai-Okatani C, Minamino N, Nakao YM, Yasuno S, Ueshima K, Sone M, Kimura T, Kangawa K, Nakao K
    • Journal Title

      Hypertension

      Volume: 69 Pages: 286-296

    • DOI

      10.1161/HYPERTENSIONAHA.116.08219

    • Peer Reviewed / Open Access
  • [Presentation] Transcriptional pathways underling the development of heart failure2018

    • Author(s)
      桑原宏一郎
    • Organizer
      第82回日本循環器学会学術集会
  • [Presentation] Endothelium-derived C-type natriuretic peptide regulates blood pressure through the maintenance of endothelial function2017

    • Author(s)
      Kuwahara K, Nakao K, Nishikimi T, Nakagawa Y, Kinoshita H, Tokudome T, Minamino N, Kimura T, Kangawa K, Nakao K
    • Organizer
      Heart Failure 2017
    • Int'l Joint Research
  • [Presentation] Endothelial dysfunction underlies blood pressure elevation in endothelium-specific C-type natriuretic peptide knockout mice.2017

    • Author(s)
      Kuwahara K, Nakao K, Nishikimi T, nakagawa Y, Tokudome T, Minamino N, Kimura T, Kangawa K, Nakao K
    • Organizer
      ESC Congress 2017
    • Int'l Joint Research
  • [Presentation] Alternative subcutaneous implantable cardioverter defibrillator lead placement in adult patients with complex congenital heart disease2017

    • Author(s)
      Oguchi Y, Shoda M, Kobayasshi H, Shoin W, Okano T, Takeuchi T, Okada A, Motoki H, Kuwahara K
    • Organizer
      Heart Rhythm 2017
    • Int'l Joint Research
  • [Presentation] 2-year natural history of lower limbs in patients with end-stage renal disease on hemodialysis due to diabetic nephropathy; from PREDICT study.2017

    • Author(s)
      Kato T, Miyashita Y, Miura T, Kanno Y, Sone H, Tokoo M, Ako S, Mizukami E, Terashima M, Yokota D, Nakagawa M, Fujimori Y, Higuchi M, Mochidome T, Sakai T, Senda K, Oguchi Y, Yamasaki S, Saigusa T, Ebisawa S, Okada A, Motoki H, Kuwahara K
    • Organizer
      Transcatheter Cardiovascular Therapeutics (TCT) 2017
    • Int'l Joint Research
  • [Presentation] Development and Validation of a Novel Scoring System for Predicting Chronic Outcome After Percutaneous Coronary Intervention for Coronary Chronic Total Occlusion2017

    • Author(s)
      Ebisawa S, Kosaka S, Yamane M, Muramatsu T, Okamura A, Kashima Y, Matsuno S, Sakurada M, Kijima M, Tanabe M, Habara M, Kuwahara K.
    • Organizer
      AHA2017
    • Int'l Joint Research
  • [Presentation] Validation of a Prognostic Risk Score for Major Bleeding Events in Patients Undergoing Percutaneous Coronary Intervention: From the SHINANO Registry.2017

    • Author(s)
      Senda K, Miura T, Mochidome T, Sakai T, Minamisawa M, Kato T, Saigusa T, Ebisawa S, Motoki H, Kuwahara K.
    • Organizer
      AHA2017
    • Int'l Joint Research
  • [Remarks] 信州大学医学部循環器内科

    • URL

      http://www.shinshu-u.ac.jp/faculty/medicine/department/doctor/zouki/i-oreg/cardiovascular/

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Published: 2018-12-17   Modified: 2022-06-07  

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