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Quijada P, Hariharan N, Cubillo JD, Bala KM, Emathinger JM, Wang BJ, Ormachea L, Bers DM, Sussman MA, Poizat C. Nuclear Calcium/Calmodulin-dependent Protein Kinase II Signaling Enhances Cardiac Progenitor Cell Survival and Cardiac Lineage Commitment. J Biol Chem 2015; 290:25411-26. [PMID: 26324717 DOI: 10.1074/jbc.m115.657775] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Indexed: 12/13/2022] Open
Abstract
Ca(2+)/Calmodulin-dependent protein kinase II (CaMKII) signaling in the heart regulates cardiomyocyte contractility and growth in response to elevated intracellular Ca(2+). The δB isoform of CaMKII is the predominant nuclear splice variant in the adult heart and regulates cardiomyocyte hypertrophic gene expression by signaling to the histone deacetylase HDAC4. However, the role of CaMKIIδ in cardiac progenitor cells (CPCs) has not been previously explored. During post-natal growth endogenous CPCs display primarily cytosolic CaMKIIδ, which localizes to the nuclear compartment of CPCs after myocardial infarction injury. CPCs undergoing early differentiation in vitro increase levels of CaMKIIδB in the nuclear compartment where the kinase may contribute to the regulation of CPC commitment. CPCs modified with lentiviral-based constructs to overexpress CaMKIIδB (CPCeδB) have reduced proliferative rate compared with CPCs expressing eGFP alone (CPCe). Additionally, stable expression of CaMKIIδB promotes distinct morphological changes such as increased cell surface area and length of cells compared with CPCe. CPCeδB are resistant to oxidative stress induced by hydrogen peroxide (H2O2) relative to CPCe, whereas knockdown of CaMKIIδB resulted in an up-regulation of cell death and cellular senescence markers compared with scrambled treated controls. Dexamethasone (Dex) treatment increased mRNA and protein expression of cardiomyogenic markers cardiac troponin T and α-smooth muscle actin in CPCeδB compared with CPCe, suggesting increased differentiation. Therefore, CaMKIIδB may serve as a novel modulatory protein to enhance CPC survival and commitment into the cardiac and smooth muscle lineages.
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Affiliation(s)
- Pearl Quijada
- From the Department of Biology, San Diego State University, San Diego, California 92182
| | - Nirmala Hariharan
- Department of Pharmacology, University of California at Davis, Davis, California 95616, and
| | - Jonathan D Cubillo
- From the Department of Biology, San Diego State University, San Diego, California 92182
| | - Kristin M Bala
- From the Department of Biology, San Diego State University, San Diego, California 92182
| | | | - Bingyan J Wang
- From the Department of Biology, San Diego State University, San Diego, California 92182
| | - Lucia Ormachea
- From the Department of Biology, San Diego State University, San Diego, California 92182
| | - Donald M Bers
- Department of Pharmacology, University of California at Davis, Davis, California 95616, and
| | - Mark A Sussman
- From the Department of Biology, San Diego State University, San Diego, California 92182
| | - Coralie Poizat
- From the Department of Biology, San Diego State University, San Diego, California 92182, Cardiovascular Research Program, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Kingdom of Saudi Arabia
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Quijada P, Salunga HT, Hariharan N, Cubillo JD, El-Sayed FG, Moshref M, Bala KM, Emathinger JM, De La Torre A, Ormachea L, Alvarez R, Gude NA, Sussman MA. Cardiac Stem Cell Hybrids Enhance Myocardial Repair. Circ Res 2015; 117:695-706. [PMID: 26228030 DOI: 10.1161/circresaha.115.306838] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [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: 05/12/2015] [Accepted: 07/29/2015] [Indexed: 02/07/2023]
Abstract
RATIONALE Dual cell transplantation of cardiac progenitor cells (CPCs) and mesenchymal stem cells (MSCs) after infarction improves myocardial repair and performance in large animal models relative to delivery of either cell population. OBJECTIVE To demonstrate that CardioChimeras (CCs) formed by fusion between CPCs and MSCs have enhanced reparative potential in a mouse model of myocardial infarction relative to individual stem cells or combined cell delivery. METHODS AND RESULTS Two distinct and clonally derived CCs, CC1 and CC2, were used for this study. CCs improved left ventricular anterior wall thickness at 4 weeks post injury, but only CC1 treatment preserved anterior wall thickness at 18 weeks. Ejection fraction was enhanced at 6 weeks in CCs, and functional improvements were maintained in CCs and CPC+MSC groups at 18 weeks. Infarct size was decreased in CCs, whereas CPC+MSC and CPC parent groups remained unchanged at 12 weeks. CCs exhibited increased persistence, engraftment, and expression of early commitment markers within the border zone relative to combinatorial and individual cell population-injected groups. CCs increased capillary density and preserved cardiomyocyte size in the infarcted regions suggesting CCs role in protective paracrine secretion. CONCLUSIONS CCs merge the application of distinct cells into a single entity for cellular therapeutic intervention in the progression of heart failure. CCs are a novel cell therapy that improves on combinatorial cell approaches to support myocardial regeneration.
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Affiliation(s)
- Pearl Quijada
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Hazel T Salunga
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Nirmala Hariharan
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Jonathan D Cubillo
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Farid G El-Sayed
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Maryam Moshref
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Kristin M Bala
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Jacqueline M Emathinger
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Andrea De La Torre
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Lucia Ormachea
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Roberto Alvarez
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Natalie A Gude
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.)
| | - Mark A Sussman
- From the Integrated Regenerative Research Institute, Department of Biology, San Diego State University, CA (P.Q., H.T.S., J.D.C., F.G.E.-S., M.M., K.M.B., J.M.E., A.D.L.T., L.O., R.A., N.A.G., M.A.S.); and Department of Pharmacology, University of California at Davis (N.H.).
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