Patent application number | Description | Published |
20080260705 | Preventing Arrhythmias Associated with Cell Transplantation - Skeletal myoblasts are an attractive cell type for transplantation since they are autologous and resistant to ischemia. However, clinical trials of myoblasts transplantation in heart failure have been plagued by ventricular tachy-arrhythmias and sudden cardiac death. The pathogenesis of these arrhythmias is poorly understood, but may be related to the fact that skeletal muscle cells, unlike heart cells, are electrically isolated by the absence of gap junctions. An in vitro model of myoblasts transplantation into cardiomyocyte monolayers can be used to investigate the mechanisms of transplant-associated arrhythmias. Co-cultures of human skeletal myoblasts and rat cardiomyocytes result in reentrant arrhythmias (spiral waves) that reproduce the features of ventricular tachycardia seen in patients receiving myoblasts transplants. These arrhythmias can be terminated by nitrendipine, an L-type calcium channel Mocker, but not by the Na channel blocker lidocaine. Genetic modification of myoblasts to stably express the gap junction protein connexin 43 decreases arrhythmogenicity in co-cultures. It similarly can be used to increase the safety of myoblasts transplantation in patients. | 10-23-2008 |
20080267921 | Cardiac Stem Cells - Human cardiac stem cells can be isolated from endomyocardial biopsies. Such cells mediate cardiac regeneration and improve heart function in a mouse infarct model. The cells can be used for autologous, allogeneic, syngeneic, or xenogeneic therapeutic applications in patients. The stem cells can be genetically modified to enhance their therapeutic activity. | 10-30-2008 |
20080318893 | Blockade of Calcium Channels - Knock-down of L-type calcium channel beta subunit (LTCCβ) attenuates the hypertrophic response both in vitro and in vivo without compromising systolic performance. Knock-down can be accomplished by administration of a vector encoding a short hairpin RNA which specifically modulates expression of LTCCβ. Suppression of the LTCCβ expression represents a therapeutic modality for cardiac hypertrophy. | 12-25-2008 |
20090012422 | Bioptome - A bioptome ( | 01-08-2009 |
20090175790 | CARDIAC ARRHYTHMIA TREATMENT METHODS AND BIOLOGICAL PACEMAKER - Disclosed are methods of preventing or treating cardiac arrhythmia. In one embodiment, the methods include administering to an amount of at least one polynucleotide that modulates an electrical property of the heart. The methods have a wide variety of important uses including treating cardiac arrhythmia. Also disclosed are methods and systems for modulating electrical behavior of cardiac cells. Preferred methods include administering a polynucleotide or cell-based composition that can modulate cardiac contraction to desired levels, e.g., the administered composition functions as a biological pacemaker. | 07-09-2009 |
20090233990 | GENERATION OF BIOLOGICAL PACEMAKER ACTIVITY - Compositions and methods for enhancing hyperpolarization-activated cation inward current and disrupting inwardly rectifying potassium current of cells are described. The compositions and methods may be employed to cause the cells to become biological pacemaker cells, e.g. to become more like SA node cells, and to undergo spontaneous oscillating action potentials. | 09-17-2009 |
20090233991 | GENERATION OF BIOLOGICAL PACEMAKER ACTIVITY - Compositions and methods for enhancing hyperpolarization-activated cation inward current and disrupting inwardly rectifying potassium current of cells are described. The compositions and methods may be employed to cause the cells to become biological pacemaker cells, e.g. to become more like SA node cells, and to undergo spontaneous oscillating action potentials. | 09-17-2009 |
20090291068 | Modulation of bio-electrical rhythms via a novel engineering approach - The present invention relates to novel compositions and methods to induce, and/or modulate bio-electrical rhythms (e.g. in cardiac, neuronal and pancreatic cells) by fine-tuning the activity of HCN-encoded pacemaker channels via a novel protein- and genetic-engineering approach to augment or attenuate the associated physiological responses (e.g. heart beat, neuronal firing, insulin secretion, etc) for achieving various therapeutic purposes (e.g. sick sinus syndrome, epilepsy, neuropathic pain, diabetes, etc). | 11-26-2009 |
20090304588 | BIOLOGICALLY EXCITABLE CELLS - As an alternative strategy to electronic pacemaker devices, we explored the feasibility of converting normally-quiescent ventricular myocytes into pacemakers by somatic cell fusion. The idea is to create chemically-induced fusion between myocytes and syngeneic fibroblasts engineered to express HCN1 pacemaker ion channels (HCN1 fibroblasts), in normally-quiescent myocardium. HCN1-expressing fibroblasts formed stable heterokaryons with myocytes, generating spontaneously-oscillating action potentials as well as ventricular pacemaker activity in vivo and provides a platform for an autologous, non-viral, adult somatic cell therapy. We also converted a depolarization-activated potassium-selective channel, Kv1.4, into a hyperpolarization-activated non-selective channel by site-directed mutagenesis (R447N, L448A, and R453I in S4 and G528S in the pore). Gene transfer into ventricular myocardium demonstrated the ability of this construct to induce pacemaker activity, with spontaneous action potential oscillations in adult ventricular myocytes and idioventricular rhythms by in vivo electrocardiography. Given the sparse expression of Kv1 family channels in the human ventricle, gene transfer of a synthetic pacemaker channel based on the Kv1 family has therapeutic utility as a biological alternative to electronic pacemakers. | 12-10-2009 |
20100061966 | Cardiac Stem Cells - Human cardiac stem cells can be isolated from endomyocardial biopsies. Such cells mediate cardiac regeneration and improve heart function in a mouse infarct model. The cells can be used for autologous, allogeneic, syngeneic, or xenogeneic therapeutic applications in patients. The stem cells can be genetically modified to enhance their therapeutic activity. | 03-11-2010 |
20100068811 | Cardiac Stem Cells - Human cardiac stem cells can be isolated from endomyocardial biopsies. Such cells mediate cardiac regeneration and improve heart function in a mouse infarct model. The cells can be used for autologous, allogeneic, syngeneic, or xenogeneic therapeutic applications in patients. The stem cells can be genetically modified to enhance their therapeutic activity. | 03-18-2010 |
20100093089 | DEDIFFERENTIATION OF ADULT MAMMALIAN CARDIOMYOCYTES INTO CARDIAC STEM CELLS - Dedifferentiation is a mechanism whereby specialized cells regain properties of their ancestors, including, in the extreme, stemness. We found that highly-purified cardiomyocytes isolated from adult mammalian hearts dedifferentiated rapidly when cultured in mitogen-rich medium. Such myocytes reentered the cell cycle and proliferated, expressing stem cell surface markers such as c-kit and early cardiac transcription factors including GATA and NKx2.5. These myocyte-derived cells (MDC) were capable of re-differentiating into myocytes and endothelial cells. Contrary to prevailing dogma, cardiomyocyte dedifferentiation yields proliferative cells expressing stem cell markers and capable of multilineage differentiation. Cardiomyocyte dedifferentiation is a potential source of endogenous stem cells in the adult heart. | 04-15-2010 |
20100111909 | Dedifferentiation of Adult Mammalian Cardiomyocytes into Cardiac Stem Cells - Dedifferentiation is a mechanism whereby specialized cells regain properties of their ancestors, including, in the extreme, stemness. We found that highly-purified cardiomyocytes isolated from adult mammalian hearts dedifferentiated rapidly when cultured in mitogen-rich medium. Such myocytes reentered the cell cycle and proliferated, expressing stem cell surface markers such as c-kit and early cardiac transcription factors including GATA and NKx2.5. These myocyte-derived cells (MDC) were capable of re-differentiating into myocytes and endothelial cells. Contrary to prevailing dogma, cardiomyocyte dedifferentiation yields proliferative cells expressing stem cell markers and capable of multilineage differentiation. Cardiomyocyte dedifferentiation is a potential source of endogenous stem cells in the adult heart. | 05-06-2010 |
20100112694 | Dedifferentiation of Adult Mammalian Cardiomyocytes into Cardiac Stem Cells - Dedifferentiation is a mechanism whereby specialized cells regain properties of their ancestors, including, in the extreme, stemness. We found that highly-purified cardiomyocytes isolated from adult mammalian hearts dedifferentiated rapidly when cultured in mitogen-rich medium. Such myocytes reentered the cell cycle and proliferated, expressing stem cell surface markers such as c-kit and early cardiac transcription factors including GATA and NKx2.5. These myocyte-derived cells (MDC) were capable of re-differentiating into myocytes and endothelial cells. Contrary to prevailing dogma, cardiomyocyte dedifferentiation yields proliferative cells expressing stem cell markers and capable of multilineage differentiation. Cardiomyocyte dedifferentiation is a potential source of endogenous stem cells in the adult heart. | 05-06-2010 |
20110245772 | FOCAL CALCIUM CHANNEL MODULATION - Disclosed is an invention for focally modulating the activity of a calcium channel in a mammal. In one aspect, the invention features a method that includes contacting a pre-determined tissue or organ region with a nucleic acid sequence encoding a GEM protein or a variant thereof to express the GEM protein or variant within the region. Typical methods further include expressing the GEM protein or variant so as to modulate the activity of the calcium channel. The invention has a wide spectrum of useful applications including treating a medical condition associated with unsuitable calcium channel activity. | 10-06-2011 |
20110256105 | CARDIAC STEM CELL AND MYOCYTE SECRETED PARACRINE FACTORS - The invention relates to secreted proteins from cardiac stem cells (cardiospheres and cardiosphere-derived cells) or myocytes for diagnostic and/or therapeutic use. | 10-20-2011 |
20110286931 | CARDIAC ARRHYTHMIA TREATMENT METHODS AND BIOLOGICAL PACEMAKER - Disclosed are methods of preventing or treating cardiac arrhythmia. In one embodiment, the methods include administering to an amount of at least one polynucleotide that modulates an electrical property of the heart. The methods have a wide variety of important uses including treating cardiac arrhythmia. Also disclosed are methods and systems for modulating electrical behavior of cardiac cells. Preferred methods include administering a polynucleotide or cell-based composition that can modulate cardiac contraction to desired levels, e.g., the administered composition functions as a biological pacemaker. | 11-24-2011 |
20120253102 | EXTERNAL MAGNETIC FORCE FOR TARGETED CELL DELIVERY WITH ENHANCED CELL RETENTION - Disclosed herein are compositions and methods for the improved delivery of cells to a target tissue. In some embodiments, the compositions comprise stem cells, in particular cardiac stem cells, and the target tissue is damaged or diseased cardiac tissue. In several embodiments, the methods, in combination with the compositions, yield enhanced delivery, retention, and/or engraftment of the cells into the target tissue, thereby inducing improved functional recovery. | 10-04-2012 |
20120315252 | Methods of Reducing Teratoma Formation During Allogeneic Stem Cell Therapy - The present application relates to methods and compositions for treating diseased or damaged cardiac tissue comprising regenerative cells harvested from donor cardiac tissue. In one embodiment, regenerative cells are harvested from an allogeneic source and after administration result in increased viability and/or functional improvement of damaged or diseased cardiac tissue. | 12-13-2012 |
20120328584 | Biological Pacemaker - Disclosed are methods and systems for modulating electrical behavior of cardiac cells. Preferred methods include administering a polynucleotide or cell-based composition that can modulate cardiac contraction to desired levels, i.e., the administered composition functions as a biological pacemaker. | 12-27-2012 |
20140274765 | CARDIAC STEM CELL AND MYOCYTE SECRETED PARACRINE FACTORS AND USESTHEREOF - The invention relates to secreted proteins from cardiac stem cells (cardiospheres and cardiosphere-derived cells) or myocytes for diagnostic and/or therapeutic use | 09-18-2014 |
20140356957 | Biological Pacemaker - Disclosed are methods and systems for modulating electrical behavior of cardiac cells. Preferred methods include administering a polynucleotide or cell-based composition that can modulate cardiac contraction to desired levels, i.e., the administered composition functions as a biological pacemaker. | 12-04-2014 |