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Tatsukawa T, Kano K, Nakajima KI, Yazawa T, Eguchi R, Kabara M, Horiuchi K, Hayasaka T, Matsuo R, Hasebe N, Azuma N, Kawabe JI. NG2-positive pericytes regulate homeostatic maintenance of slow-type skeletal muscle with rapid myonuclear turnover. Stem Cell Res Ther 2023; 14:205. [PMID: 37592340 PMCID: PMC10433572 DOI: 10.1186/s13287-023-03433-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 07/26/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND Skeletal muscle comprises almost 40% of the human body and is essential for movement, structural support and metabolic homeostasis. Size of multinuclear skeletal muscle is stably maintained under steady conditions with the sporadic fusion of newly produced myocytes to compensate for the muscular turnover caused by daily wear and tear. It is becoming clear that microvascular pericytes (PCs) exhibit myogenic activity. However, whether PCs act as myogenic stem cells for the homeostatic maintenance of skeletal muscles during adulthood remains uncertain. METHODS We utilized PC-fused myofibers using PC-specific lineage tracing mouse (NG2-CreERT/Rosa-tdTomato) to observe whether muscle resident PCs have myogenic potential during daily life. Genetic PC deletion mouse model (NG2-CreERT/DTA) was used to test whether PC differentiates to myofibers for maintenance of muscle structure and function under homeostatic condition. RESULTS Under steady breeding conditions, tdTomato-expressing PCs were infused into myofibers, and subsequently, PC-derived nuclei were incorporated into myofibers. Especially in type-I slow-type myofibers such as the soleus, tdTomato+ myofibers were already observed 3 days after PC labeling; their ratio reached a peak (approximately 80%) within 1 month and was maintained for more than 1 year. Consistently, the NG2+ PC-specific deletion induced muscular atrophy in a slow-type myofiber-specific manner under steady breeding conditions. The number of myonucleus per volume of each myofiber was constant during observation period. CONCLUSIONS These findings demonstrate that the turnover of myonuclei in slow-type myofibers is relatively fast, with PCs acting as myogenic stem cells-the suppliers of new myonuclei under steady conditions-and play a vital role in the homeostatic maintenance of slow-type muscles.
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Affiliation(s)
- Takamitsu Tatsukawa
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
- Department of Vascular Surgery, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Kohei Kano
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Kei-Ichi Nakajima
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Takashi Yazawa
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Ryoji Eguchi
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Maki Kabara
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Kiwamu Horiuchi
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
- Division of Cardiovascular, Respiratory and Neurology, Department of Medicine, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Taiki Hayasaka
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
- Division of Cardiovascular, Respiratory and Neurology, Department of Medicine, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Risa Matsuo
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
- Department of Dermatology, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Naoyuki Hasebe
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
- Division of Cardiovascular, Respiratory and Neurology, Department of Medicine, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Nobuyoshi Azuma
- Department of Vascular Surgery, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan
| | - Jun-Ichi Kawabe
- Department of Biochemistry, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan.
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, 2-1-1 Midorigaoka-Higashi, Asahikawa, 078-8510, Japan.
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Kanno T, Nakagawa N, Aonuma T, Kawabe JI, Yuhki KI, Takehara N, Hasebe N, Ushikubi F. Prostaglandin E 2 mediates the late phase of ischemic preconditioning in the heart via its receptor subtype EP 4. Heart Vessels 2023; 38:606-613. [PMID: 36522555 PMCID: PMC9986202 DOI: 10.1007/s00380-022-02219-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022]
Abstract
Ischemic preconditioning (IPC) describes a phenomenon wherein brief ischemia of the heart induces a potent cardioprotective mechanism against succeeding ischemic insult. Cyclooxygenase-2 (COX-2), a rate-limiting enzyme in prostanoid biosynthesis, is upregulated in the ischemic heart and contributes to IPC. Prostaglandin E2 (PGE2) protects the heart from ischemia-reperfusion (I/R) injury via its receptor subtype EP4. We sought to clarify the role of the PGE2/EP4 system in the late phase of IPC. Mice were subjected to four IPC treatment cycles, consisting of 5 min of occlusion of the left anterior descending coronary artery (LAD). We found that COX-2 mRNA was significantly upregulated in wild-type hearts at 6 h after IPC treatment. Cardiac PGE2 levels at 24 h after IPC treatment were significantly increased in both wild-type mice and mice lacking EP4 (EP4-/-). At 24 h after IPC treatment, I/R injury was induced by 30 min of LAD occlusion followed by 2 h of reperfusion and the cardiac infarct size was determined. The infarct size was significantly reduced by IPC treatment in wild-type mice; a reduction was not observed in EP4-/- mice. AE1-329, an EP4 agonist, significantly reduced infarct size and significantly ameliorated deterioration of cardiac function in wild-type mice subjected to I/R without IPC treatment. Furthermore, AE1-329 significantly enhanced the I/R-induced activation of Akt, a pro-survival kinase. We demonstrated that the PGE2/EP4 system in the heart plays a critical role in the late phase of IPC, partly by augmenting Akt-mediated signaling. These findings clarify the mechanism of IPC and may contribute to the development of therapeutic strategies for ischemic heart disease.
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Affiliation(s)
- Takayasu Kanno
- Department of Pharmacology, Asahikawa Medical University, Asahikawa, Japan.,Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Naoki Nakagawa
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-Higashi, Asahikawa, Japan.
| | - Tatsuya Aonuma
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Jun-Ichi Kawabe
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Division of Integrated Life Science, Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan
| | - Koh-Ichi Yuhki
- Department of Pharmacology, Asahikawa Medical University, Asahikawa, Japan
| | - Naofumi Takehara
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-Higashi, Asahikawa, Japan
| | - Naoyuki Hasebe
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-Higashi, Asahikawa, Japan.,Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
| | - Fumitaka Ushikubi
- Department of Pharmacology, Asahikawa Medical University, Asahikawa, Japan
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3
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Yamasaki K, Daiho T, Yasuda S, Danko S, Kawabe JI, Suzuki H. Electrostatic interactions between single arginine and phospholipids modulate physiological properties of sarcoplasmic reticulum Ca 2+-ATPase. Sci Rep 2022; 12:12200. [PMID: 35842495 PMCID: PMC9288429 DOI: 10.1038/s41598-022-16091-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/01/2022] [Indexed: 11/09/2022] Open
Abstract
Arg324 of sarcoplasmic reticulum Ca2+-ATPase forms electrostatic interactions with the phosphate moiety of phospholipids in most reaction states, and a hydrogen bond with Tyr122 in other states. Using site-directed mutagenesis, we explored the functional roles of Arg324 interactions, especially those with lipids, which at first glance might seem too weak to modulate the function of such a large membrane protein. The hydrogen bond forms transiently and facilitates Ca2+ binding from the cytoplasmic side. The contributions of the electrostatic interactions to the reaction steps were quantified using a rate vs activity coefficient plot. We found that the interaction between Arg324 and lipids decreases the affinity for luminal Ca2+. The transformation rate of the phosphoenzyme intermediate is facilitated by the electrostatic interactions, and the function of these interactions depends not only on the type but also on the composition of the phospholipids. The properties observed in microsomes could not be reproduced with any single phospholipid, but with a mixture of phospholipids that mimics the native membrane. These results suggest the importance of swapping of the lipid partners of different headgroups in the reaction step. This study shows that Arg324 plays a role in the reaction cycle via complex intra-protein and protein-lipid interactions.
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Affiliation(s)
- Kazuo Yamasaki
- Department of Biochemistry, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, 078-8510, Japan.
| | - Takashi Daiho
- Department of Biochemistry, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, 078-8510, Japan
| | - Satoshi Yasuda
- Department of Biochemistry, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, 078-8510, Japan
| | - Stefania Danko
- Department of Biochemistry, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, 078-8510, Japan
| | - Jun-Ichi Kawabe
- Department of Biochemistry, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, 078-8510, Japan
| | - Hiroshi Suzuki
- Department of Biochemistry, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, 078-8510, Japan
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4
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Hayasaka T, Takehara N, Aonuma T, Kano K, Horiuchi K, Nakagawa N, Tanaka H, Kawabe JI, Hasebe N. Sarcopenia-derived exosomal micro-RNA 16-5p disturbs cardio-repair via a pro-apoptotic mechanism in myocardial infarction in mice. Sci Rep 2021; 11:19163. [PMID: 34580402 PMCID: PMC8476608 DOI: 10.1038/s41598-021-98761-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 09/08/2021] [Indexed: 11/23/2022] Open
Abstract
Sarcopenia is a pathophysiological malfunction induced by skeletal muscle atrophy. Several studies reported an association between sarcopenia-induced cardiac cachexia and poor prognosis in heart disease. However, due to lack of an established animal models, the underlying mechanism of disturbed cardiac repair accompanied with sarcopenia remains poorly understood. Here, we developed a novel sarcopenia-induced cardiac repair disturbance mouse model induced by tail suspension (TS) after cardiac ischemia and reperfusion (I/R). Importantly, we identified a specific exosomal-microRNA marker, miR-16-5p, in the circulating exosomes of I/R-TS mice. Of note, sarcopenia after I/R disturbed cardiac repair and raised the level of circulating-exosomal-miR-16-5p secreting from both the atrophic limbs and heart of TS mice. Likewise, miR-16-5p mimic plasmid disturbed cardiac repair in I/R mice directly. Additionally, in neonatal rat ventricular myocytes (NRVMs) cultured in vitro under hypoxic conditions in the presence of a miR-16-5p mimic, we observed increased apoptosis through p53 and Caspase3 upregulation, and also clarified that autophagosomes were decreased in NRVMs via SESN1 transcript interference-mediated mTOR activation. In conclusion, we show the pro-apoptotic effect of sarcopenia-derived miR-16-5p, which may be behind the exacerbation of myocardial infarction. Therefore, miR-16-5p can be a novel therapeutic target in the context of cardiac repair disturbances in sarcopenia-cachexia.
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Affiliation(s)
- Taiki Hayasaka
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan
| | - Naofumi Takehara
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan.
| | - Tatsuya Aonuma
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan
| | - Kohei Kano
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan
| | - Kiwamu Horiuchi
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan
| | - Naoki Nakagawa
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan
| | - Hiroki Tanaka
- Division of Tumor Pathology, Department of Pathology, Asahikawa Medical University, Asahikawa, Japan
| | - Jun-Ichi Kawabe
- Division of Integrated Life Science, Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan
| | - Naoyuki Hasebe
- Division of Cardiology, Nephrology, Pulmonology and Neurology, Department of Internal Medicine, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan
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5
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Horiuchi K, Kano K, Minoshima A, Hayasaka T, Yamauchi A, Tatsukawa T, Matsuo R, Yoshida Y, Tomita Y, Kabara M, Nakagawa N, Takehara N, Hasebe N, Kawabe JI. Pericyte-specific deletion of ninjurin-1 induces fragile vasa vasorum formation and enhances intimal hyperplasia of injured vasculature. Am J Physiol Heart Circ Physiol 2021; 320:H2438-H2447. [PMID: 33961504 DOI: 10.1152/ajpheart.00931.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Adventitial abnormalities including enhanced vasa vasorum malformation are associated with development and vulnerability of atherosclerotic plaque. However, the mechanisms of vasa vasorum malformation and its role in vascular remodeling have not been fully clarified. We recently reported that ninjurin-1 (Ninj1) is a crucial adhesion molecule for pericytes to form matured neovessels. The purpose is to examine if Ninj1 regulates adventitial angiogenesis and affects the vascular remodeling of injured vessels using pericyte-specific Ninj1 deletion mouse model. Mouse femoral arteries were injured by insertion of coiled wire. Four weeks after vascular injury, fixed arteries were decolorized. Vascular remodeling, including intimal hyperplasia and adventitial microvessel formation were estimated in a three-dimensional view. Vascular fragility, including blood leakiness was estimated by extravasation of fluorescein isothiocyanate (FITC)-lectin or FITC-dextran from microvessels. Ninj1 expression was increased in pericytes in response to vascular injury. NG2-CreER/Ninj1loxp mice were treated with tamoxifen (Tam) to induce deletion of Ninj1 in pericyte (Ninj1 KO). Tam-treated NG2-CreER or Tam-nontreated NG2-CreER/Ninj1loxp mice were used as controls. Intimal hyperplasia was significantly enhanced in Ninj1 KO compared with controls. Vascular leakiness was significantly enhanced in Ninj1 KO. In Ninj1 KO, the number of infiltrated macrophages in adventitia was increased, along with the expression of inflammatory cytokines. In conclusion, deletion of Ninj1 in pericytes induces the immature vasa vasorum formation of injured vasculature and exacerbates adventitial inflammation and intimal hyperplasia. Thus, Ninj1 contributes to the vasa vasorum maturation in response to vascular injury and to reduction of vascular remodeling.NEW & NOTEWORTHY Although abnormalities of adventitial vasa vasorum are associated with vascular remodeling such as atherosclerosis, the mechanisms of vasa vasorum malformation and its role in vascular remodeling have not been fully clarified. The present study provides a line of novel evidence that ninjurin-1 contributes to adventitial microvascular maturation during vascular injury and regulates vascular remodeling.
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Affiliation(s)
- Kiwamu Horiuchi
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Kohei Kano
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Akiho Minoshima
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Taiki Hayasaka
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Atsushi Yamauchi
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
| | - Takamitsu Tatsukawa
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Department of Vascular Surgery, Asahikawa Medical University, Asahikawa, Japan
| | - Risa Matsuo
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan.,Department of Dermatology, Asahikawa Medical University, Asahikawa, Japan
| | - Yuri Yoshida
- Department of Vascular Surgery, Asahikawa Medical University, Asahikawa, Japan
| | - Yui Tomita
- Department of Radiology, Asahikawa Medical University, Asahikawa, Japan
| | - Maki Kabara
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
| | - Naoki Nakagawa
- Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Naofumi Takehara
- Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Naoyuki Hasebe
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Jun-Ichi Kawabe
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan.,Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
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6
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Kano K, Horiuchi K, Yoshida Y, Hayasaka T, Kabara M, Tomita Y, Tatsukawa T, Matsuo R, Sawada J, Nakagawa N, Takehara N, Hasebe N, Kawabe JI. EphA7 + perivascular cells as myogenic and angiogenic precursors improving skeletal muscle regeneration in a muscular dystrophic mouse model. Stem Cell Res 2020; 47:101914. [PMID: 32738632 DOI: 10.1016/j.scr.2020.101914] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 06/29/2020] [Accepted: 07/09/2020] [Indexed: 11/22/2022] Open
Abstract
Skeletal muscle has a capacity for muscular regeneration mediated by satellite cells (SCs) and non-SCs. Although it is proposed that non-SCs are attractive therapeutic targets for dystrophies, the biological properties of these cells remain unclear. We have recently identified novel multipotent pericytes (PCs), capillary stem cells (CapSCs) derived from the microvasculature. In the present study, we determined if CapSCs contributed to myogenic regeneration using muscular dystrophy mouse model. CapSCs were isolated as EphA7+NG2+PCs from the subcutaneous adipose tissues of GFP-transgenic mice. Co-culture with C2C12 myoblast cells showed that CapSCs effectively enhanced myogenesis as compared to controls including EphA7- PCs and adipose stromal cells (ASCs). CapSCs transplanted in cardiotoxin-injured gastrocnemius muscles were well differentiated into both muscle fibers and microvessels, as compared to controls. At three weeks after cell-transplantation into the limbs of the mdx/utrn-/-mouse, CapSCs increased the number of GFP+myofibers along with dystrophin expression and the area size of myofibers, and also enhanced the muscular mass and its performance, assessed by treadmill test as compared to controls. In conclusion, CapSCs have potent myogenic regeneration capacity and improved the pathological condition in a muscular dystrophy mouse. Thus, CapSCs are an attractive cellular source in regenerative therapy for muscular dystrophy.
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Affiliation(s)
- Kohei Kano
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Kiwamu Horiuchi
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Yuri Yoshida
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Vascular Surgery, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Taiki Hayasaka
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Maki Kabara
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Yui Tomita
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Radiology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Takamitsu Tatsukawa
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Vascular Surgery, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Risa Matsuo
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Dermatology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Jun Sawada
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Naoki Nakagawa
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Naofumi Takehara
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Naoyuki Hasebe
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan
| | - Jun-Ichi Kawabe
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan; Department of Biochemistry, Asahikawa Medical University, Asahikawa, 2-1-1 Midorigaoka-higashi, Asahikawa 078-8510, Japan.
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7
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Yoshida Y, Kabara M, Kano K, Horiuchi K, Hayasaka T, Tomita Y, Takehara N, Minoshima A, Aonuma T, Maruyama K, Nakagawa N, Azuma N, Hasebe N, Kawabe JI. Capillary-resident EphA7 + pericytes are multipotent cells with anti-ischemic effects through capillary formation. Stem Cells Transl Med 2019; 9:120-130. [PMID: 31471947 PMCID: PMC6954719 DOI: 10.1002/sctm.19-0148] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 07/19/2019] [Indexed: 12/14/2022] Open
Abstract
The presence of pericytes (PCs) with multipotency and broad distribution along capillary suggests that microvasculature plays a role not only as a duct for blood fluid transport but also as a stem cell niche that contributes to tissue maintenance and regeneration. The lack of an appropriate marker for multipotent PCs still limits our understanding of their pathophysiological roles. We identified the novel marker EphA7 to detect multipotent PCs using microarray analysis of an immortalized PC library. PCs were isolated from microvessels of mouse subcutaneous adipose tissues, then EphA7+ PCs called capillary stem cells (CapSCs) were separated from EphA7− control PCs (ctPCs) using fluorescence‐activated cell sorting system. CapSCs had highly multipotency that enabled them to differentiate into mesenchymal and neuronal lineages compared with ctPCs. CapSCs also differentiated into endothelial cells and PCs to form capillary‐like structures by themselves. Transplantation of CapSCs into ischemic tissues significantly improved blood flow recovery in hind limb ischemia mouse model due to vascular formation compared with that of ctPCs and adipose stromal cells. These data demonstrate that EphA7 identifies a subpopulation of multipotent PCs that have high angiogenesis and regenerative potency and are an attractive target for regenerative therapies.
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Affiliation(s)
- Yuri Yoshida
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Department of Vascular Surgery, Asahikawa Medical University, Asahikawa, Japan
| | - Maki Kabara
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
| | - Kohei Kano
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Kiwamu Horiuchi
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Taiki Hayasaka
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Yui Tomita
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Department of Radiology, Asahikawa Medical University, Asahikawa, Japan
| | - Naofumi Takehara
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Akiho Minoshima
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Tatsuya Aonuma
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Keisuke Maruyama
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Naoki Nakagawa
- Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Nobuyoshi Azuma
- Department of Vascular Surgery, Asahikawa Medical University, Asahikawa, Japan
| | - Naoyuki Hasebe
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan.,Department of Medicine, Division of Cardiovascular, Respiratory and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Jun-Ichi Kawabe
- Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
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8
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Minoshima A, Kabara M, Matsuki M, Yoshida Y, Kano K, Tomita Y, Hayasaka T, Horiuchi K, Saito Y, Aonuma T, Nishimura M, Maruyama K, Nakagawa N, Sawada J, Takehara N, Hasebe N, Kawabe JI. Pericyte-Specific Ninjurin1 Deletion Attenuates Vessel Maturation and Blood Flow Recovery in Hind Limb Ischemia. Arterioscler Thromb Vasc Biol 2019; 38:2358-2370. [PMID: 30354207 PMCID: PMC6166707 DOI: 10.1161/atvbaha.118.311375] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Supplemental Digital Content is available in the text. Objective— Angiogenesis, entire step from endothelial cells (ECs) sprouts to vascular maturation, is a critical response to ischemia. To form functional mature vessels, interactions between ECs and pericytes are essential. Ninj1 (ninjurin1) is an adhesion molecule that contributes to the pathogenesis of neuroinflammation. We recently demonstrated that Ninj1 is expressed in pericytes during angiogenesis. However, the role of Ninj1 in angiogenesis under pathophysiological ischemic conditions has not yet been elucidated. Approach and Results— Ninj1 was detected in microvessels, and its expression was enhanced in ischemic tissues after mouse hindlimb ischemia. Knockdown of Ninj1 was performed by injection of biodegradable microspheres releasing Ninj1-small interfering RNA into muscle tissues. Alternatively, pericyte-specific Ninj1 knockout was induced by tamoxifen treatment of NG2-CreERT/Ninj1-flox mice. Ninj1 knockdown/knockout reduced the formation of blood-circulating functional vessels among total CD31+ microvessels within ischemic tissues and subsequently attenuated color Doppler–assessed blood flow recovery. Ninj1 overexpression enhanced expression of Anpt (angiopoietin) 1, whereas Ninj1 knockdown enhanced the endogenous Anpt1 antagonist, Anpt2 expression in pericytes and inhibited the association of pericytes with ECs and subsequent formation of capillary-like structure, that is, EC tube surrounded with pericytes in 3-dimensional gel culture. Conclusions— Our data demonstrate that Ninj1 is involved in the formation of functional matured vessels through the association between pericytes and ECs, resulting in blood flow recovery from ischemia. These findings further the current our understanding of vascular maturation and may support the development of therapeutics for ischemic diseases.
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Affiliation(s)
- Akiho Minoshima
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | - Maki Kabara
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan
| | - Motoki Matsuki
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | - Yuri Yoshida
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Department of Vascular Surgery (Y.Y., Y.S.), Asahikawa Medical University, Japan
| | - Kohei Kano
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | - Yui Tomita
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Department of Radiology (Y.T.), Asahikawa Medical University, Japan
| | - Taiki Hayasaka
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | - Kiwamu Horiuchi
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | - Yukihiro Saito
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Department of Vascular Surgery (Y.Y., Y.S.), Asahikawa Medical University, Japan
| | - Tatsuya Aonuma
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | | | | | | | | | - Naofumi Takehara
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | - Naoyuki Hasebe
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan.,Division of Cardiovascular, Respiratory, and Neurology, Department of Medicine (A.M., M.M., K.K., T.H., K.H., T.A., N.T., N.H.), Asahikawa Medical University, Japan
| | - Jun-Ichi Kawabe
- From the Department of Cardiovascular Regeneration and Innovation (A.M., M.K., M.M., Y.Y., K.K., Y.T., T.H., K.H., Y.S., T.A., N.T., N.H., J.-i.K.), Asahikawa Medical University, Japan
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Lee E, Takahashi H, Pauty J, Kobayashi M, Kato K, Kabara M, Kawabe JI, Matsunaga YT. A 3D in vitro pericyte-supported microvessel model: visualisation and quantitative characterisation of multistep angiogenesis. J Mater Chem B 2018; 6:1085-1094. [PMID: 32254296 DOI: 10.1039/c7tb03239k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Angiogenesis, which refers to the formation of new blood vessels from already existing vessels, is a promising therapeutic target and a complex multistep process involving many different factors. Pericytes (PCs) are attracting attention as they are considered to make significant contributions to the maturation and stabilisation of newly formed vessels, although not much is known about the precise mechanisms involved. Since there is no single specific marker for pericytes, in vivo models may complicate PC identification and the study of PCs in angiogenesis would benefit from in vitro models recapitulating the interactions between PCs and endothelial cells (ECs) in a three-dimensional (3D) configuration. In this study, a 3D in vitro co-culture microvessel model incorporating ECs and PCs was constructed by bottom-up tissue engineering. Angiogenesis was induced in the manner of sprout formation by the addition of a vascular endothelial cell growth factor. It was found that the incorporation of PCs prevented expansion of the parent vessel diameter and enhanced sprout formation and elongation. Physical interactions between ECs and PCs were visualised by immunostaining and it disclosed that PCs covered the EC monolayer from its basal side in the parent vessel as well as angiogenic sprouts. Furthermore, the microvessels were visualized in 3D by using a non-invasive optical coherence tomography (OCT) imaging system and sprout features were quantitatively assessed. It revealed that the sprouts in EC-PC co-culture vessels were longer and tighter than those in EC mono-culture vessels. The combination of the microvessel model and the OCT system analysis can be useful for the visualisation and demonstration of the multistep process of angiogenesis, which incorporates PCs.
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Affiliation(s)
- Eujin Lee
- Center for International Research on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
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10
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Aonuma T, Takehara N, Maruyama K, Kabara M, Matsuki M, Yamauchi A, Kawabe JI, Hasebe N. Apoptosis-Resistant Cardiac Progenitor Cells Modified With Apurinic/Apyrimidinic Endonuclease/Redox Factor 1 Gene Overexpression Regulate Cardiac Repair After Myocardial Infarction. Stem Cells Transl Med 2016; 5:1067-78. [PMID: 27334489 DOI: 10.5966/sctm.2015-0281] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 03/14/2016] [Indexed: 01/16/2023] Open
Abstract
UNLABELLED : Overcoming the insufficient survival of cell grafts is an essential objective in cell-based therapy. Apurinic/apyrimidinic endonuclease/redox factor 1 (APE1) promotes cell survival and may enhance the therapeutic effect of engrafted cells. The aim of this study is to determine whether APE1 overexpression in cardiac progenitor cells (CPCs) could ameliorate the efficiency of cell-based therapy. CPCs isolated from 8- to 10-week-old C57BL/6 mouse hearts were infected with retrovirus harboring APE1-DsRed (APE1-CPC) or a DsRed control (control-CPC). Oxidative stress-induced apoptosis was then assessed in APE1-CPCs, control-CPCs, and neonatal rat ventricular myocytes (NRVMs) cocultured with these CPCs. This analysis revealed that APE1 overexpression inhibited CPC apoptosis with activation of transforming growth factor β-activated kinase 1 (TAK1) and nuclear factor (NF)-κB. In the coculture model, NRVM apoptosis was inhibited to a greater extent in the presence of APE1-CPCs compared with control-CPCs. Moreover, the number of surviving DsRed-positive CPC grafts was significantly higher 7 days after the transplant of APE1-CPCs into a mouse myocardial infarction model, and the left ventricular ejection fraction showed greater improvement with attenuation of fibrosis 28 days after the transplant of APE1-CPCs compared with control-CPCs. Additionally, fewer inflammatory macrophages and a higher percentage of cardiac α-sarcomeric actinin-positive CPC-grafts were observed in mice injected with APE1-CPCs compared with control-CPCs after 7 days. In conclusion, antiapoptotic APE1-CPC graft, which increased TAK1-NF-κB pathway activation, survived effectively in the ischemic heart, restored cardiac function, and reduced cardiac inflammation and fibrosis. APE1 overexpression in CPCs may serve as a novel strategy to improve cardiac cell therapy. SIGNIFICANCE Improving the survival of cell grafts is essential to maximize the efficacy of cell therapy. The authors investigated the role of APE1 in CPCs under ischemic conditions and evaluated the therapeutic efficacy of transplanted APE1-overexpressing CPCs in a mouse model of myocardial infarction. APE1 hindered apoptosis in CPC grafts subjected to oxidative stress caused in part by increased TAK1-NF-κB pathway activation. Furthermore, APE1-CPC grafts that effectively survived in the ischemic heart restored cardiac function and attenuated fibrosis through pleiotropic mechanisms that remain to be characterized. These findings suggest that APE1 overexpression in CPCs may be a novel strategy to reinforce cardiac cell therapy.
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Affiliation(s)
- Tatsuya Aonuma
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Naofumi Takehara
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
| | - Keisuke Maruyama
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Maki Kabara
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
| | - Motoki Matsuki
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Atsushi Yamauchi
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan
| | - Jun-Ichi Kawabe
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan Department of Cardiovascular Regeneration and Innovation, Asahikawa Medical University, Asahikawa, Japan
| | - Naoyuki Hasebe
- Department of Internal Medicine, Division of Cardiology, Nephrology, Pulmonology, and Neurology, Asahikawa Medical University, Asahikawa, Japan
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11
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Kawabe JI, Yuhki KI, Okada M, Kanno T, Yamauchi A, Tashiro N, Sasaki T, Okumura S, Nakagawa N, Aburakawa Y, Takehara N, Fujino T, Hasebe N, Narumiya S, Ushikubi F. Prostaglandin I2 promotes recruitment of endothelial progenitor cells and limits vascular remodeling. Arterioscler Thromb Vasc Biol 2009; 30:464-70. [PMID: 20007911 DOI: 10.1161/atvbaha.109.193730] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE Endothelial progenitor cells (EPCs) play an important role in the self-healing of a vascular injury by participating in the reendothelialization that limits vascular remodeling. We evaluated whether prostaglandin I(2) plays a role in the regulation of the function of EPCs to limit vascular remodeling. METHODS AND RESULTS EPCs (Lin(-)cKit(+)Flk-1(+) cells) were isolated from the bone marrow (BM) of wild-type (WT) mice or mice lacking the prostaglandin I(2) receptor IP (IP(-/-) mice). Reverse transcription-polymerase chain reaction analysis showed that EPCs among BM cells specifically express IP. The cellular properties of EPCs, adhesion, migration, and proliferation on fibronectin were significantly attenuated in IP-deficient EPCs compared with WT EPCs. In contrast, IP agonists facilitated these functions in WT EPCs, but not in IP-deficient EPCs. The specific deletion of IP in BM cells, which was performed by transplanting BM cells of IP(-/-) mice to WT mice, accelerated wire injury-mediated neointimal hyperplasia in the femoral artery. Notably, transfused WT EPCs, but not IP-deficient EPCs, were recruited to the injured vessels, participated in reendothelialization, and efficiently rescued the accelerated vascular remodeling. CONCLUSIONS These findings clearly indicate that the prostaglandin I(2)-IP system is essential for EPCs to accomplish their function and plays a critical role in the regulation of vascular remodeling.
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Affiliation(s)
- Jun-Ichi Kawabe
- Department of Pharmacology, Asahikawa Medical College, Midorigaoka Higashi 2-1-1-1, Asahikawa 078-8510, Japan
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12
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Okada M, Kawabe JI, Aburakawa Y, Kanno T, Kobayashi M, Yamauchi A, Nakagawa N, Takehara N, Ushikubi F, Hasebe N. Prostacyclin Relieves Peripheral Ischemia Through Enhancement of Critical Functions of Hematopoietic Stem Cells. J Card Fail 2009. [DOI: 10.1016/j.cardfail.2009.07.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Iwamoto T, Okumura S, Iwatsubo K, Kawabe JI, Ohtsu K, Sakai I, Hashimoto Y, Izumitani A, Sango K, Ajiki K, Toya Y, Umemura S, Goshima Y, Arai N, Vatner SF, Ishikawa Y. Motor dysfunction in type 5 adenylyl cyclase-null mice. J Biol Chem 2003; 278:16936-40. [PMID: 12665504 DOI: 10.1074/jbc.c300075200] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Various neurotransmitters, such as dopamine, stimulate adenylyl cyclase to produce cAMP, which regulates neuronal functions. Genetic disruption of the type 5 adenylyl cyclase isoform led to a major loss of adenylyl cyclase activity in a striatum-specific manner with a small increase in the expression of a few other adenylyl cyclase isoforms. D1 dopaminergic agonist-stimulated adenylyl cyclase activity was attenuated, and this was accompanied by a decrease in the expression of the D1 dopaminergic receptor and G(s)alpha. D2 dopaminergic agonist-mediated inhibition of adenylyl cyclase activity was also blunted. Type 5 adenylyl cyclase-null mice exhibited Parkinsonian-like motor dysfunction, i.e. abnormal coordination and bradykinesia detected by Rotarod and pole test, respectively, and to a lesser extent locomotor impairment was detected by open field tests. Selective D1 or D2 dopaminergic stimulation improved some of these disorders in this mouse model, suggesting the partial compensation of each dopaminergic receptor signal through the stimulation of remnant adenylyl cyclase isoforms. These findings extend our knowledge of the role of an effector enzyme isoform in regulating receptor signaling and neuronal functions and imply that this isoform provides a site of convergence of both D1 and D2 dopaminergic signals and balances various motor functions.
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Affiliation(s)
- Tamio Iwamoto
- Department of Physiology, Yokohama City University School of Medicine, Yokohama 236-0004, Japan
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Fujino T, Hasebe N, Kawabe JI, Fujita M, Fukuzawa J, Tobise K, Kikuchi K. Effect of beta-adrenoceptor antagonist and angiotensin-converting enzyme inhibitor on hypertension-associated changes in adenylyl cyclase type V messenger RNA expression in spontaneously hypertensive rats. J Cardiovasc Pharmacol 2003; 41:720-5. [PMID: 12717102 DOI: 10.1097/00005344-200305000-00008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Adenylyl cyclase (AC) messenger RNA (mRNA) expression is decreased in failing hearts. Diminished expressions are accompanied by desensitization of beta-adrenergic signal transduction. Factors contributing to such changes in mRNA expression for the major myocardial isoform AC V are not well established. To assess the contributions of hypertension, left ventricular hypertrophy (LVH), the renin-angiotensin-aldosterone system (RAS), and the sympathetic nervous system to these changes, ventricular expression of AC V mRNA was measured at different ages in spontaneously hypertensive rats (SHRs). In addition, the effects on them of angiotensin-converting enzyme inhibitor and beta-adrenoceptor antagonists were determined. Prior to quantitative Northern blotting at ages 5, 9, or 12 weeks, hemodynamic and morphologic variables were measured in SHRs and Wistar-Kyoto rats (WKYs). The SHRs and WKYs were treated with an angiotensin-converting enzyme inhibitor, enalapril (10 mg/kg/d), or a beta(1)-adrenoceptor antagonist, atenolol (100 mg/kg/d), for 8 weeks preceding Northern analysis. Myocardial AC V mRNA expression increased from 5-12 weeks in both SHRs and WKYs. Expression of AC V mRNA in SHRs increased somewhat less than in WKYs at 9 weeks and significantly less at 12 weeks. This was accompanied by development of LVH and hypertension in SHRs. Blood pressure and left ventricular weight relative to body weight were markedly decreased by enalapril and were moderately decreased by atenolol. Expression of AC V mRNA in SHRs at 12 weeks was normalized equally by enalapril and atenolol to the level of WKYs. Thus AC V mRNA expression increases are blunted in the early stages of LVH in SHRs under the influences of beta(1)-adrenergic signal transduction and the RAS.
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Affiliation(s)
- Takayuki Fujino
- First Department of Internal Medicine, Asahikawa Medical Colloge, Asahikawa, Japan.
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Abstract
It is now accepted that caveolin plays a key role in signal transduction by directly binding to and regulating the function of molecules involved in transmembrane signaling, such as ras, suggesting that the amount of caveolin within cells may be an important factor in determining the cellular signaling. We investigated the ontogenic changes in the protein amount of caveolin subtypes, as well as ras protein expression in various organs (the heart, lungs, and muscles) obtained from aging rats (neonates, young and old adults). Our results demonstrated that caveolin protein expression changed ontogenically in a subtype-dependent manner. In lungs, for example, caveolin-1 expression changed in an opposite manner to caveolin-3 expression, while in the heart caveolin-1 and -3 changed in parallel. Ras expression showed an ontogenic increase in lungs and a decrease in muscles, which were both parallel to caveolin-1 expression. Our results suggest that the regulation of transmembrane signaling by caveolin may differ among developmental stages and caveolin subtypes.
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Affiliation(s)
- J I Kawabe
- Department of Medicine, Cardiovascular Research Center, University of Medicine and Dentistry of New Jersey, Newark, NJ 07103-2714, USA
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