Patent application number | Description | Published |
20080247998 | Creation of a Biological Atrioventricular Bypass to Compensate for Atrioventricular Block - A method of creating an atrioventricular bypass tract for a heart comprises growing mesenchymal stem cells into a strip with two ends, attaching one end of the strip onto the atrium of the heart, and attaching the other end of the strip to the ventricle of the heart, to create a tract connecting the atrium to the ventricle to provide a path for electrical signals generated by the sinus node to propagate across the tract and excite the ventricle. | 10-09-2008 |
20090053180 | Tandem cardiac pacemaker system - This invention provides pacemaker systems comprising (1) an electronic pacemaker, and (2) a biological pacemaker, wherein the biological pacemaker comprises a cell that functionally expresses a chimeric hyperpolarization-activated, cyclic nucleotide-gated (HCN) ion channel at a level effective to induce pacemaker current in the cell. The invention also provides related biological pacemakers, atrioventricular bridges, methods of making same, and methods of treating a subject afflicted with a cardiac rhythm disorder. | 02-26-2009 |
20090062876 | Quantum dot labeled stem cells for use in providing pacemaker function - The present invention provides methods and compositions relating to the labeling of target cells with nanometer scale fluorescent semiconductors referred to as quantum dots (QDs). Specifically, a delivery system is disclosed based on the use of negatively charged QDs for delivery of a tracking fluorescent signal into the cytosol of target cells via a passive endocytosis-mediated delivery process. In a specific embodiment of the invention the target cell is a stem cell, preferably a mesenchymal stem cell (MSC). Such labeled MSCs provide a means for tracking the distribution and fate of MSCs that have been genetically engineered to express, for example, a hyperpolarization-activated cyclic nucleotide-gated (“HCN”) channel and administered to a subject to create a biological pacemaker. The invention is based on the discovery that MSCs can be tracked in vitro for up to at least 6 weeks. Additionally, QDs delivered in vivo can be tracked for up to at least 8 weeks, thereby permitting for the first time, the complete 3-D reconstruction of the locations of all MSCs following administration into a host. | 03-05-2009 |
20100047216 | COMPOSITIONS OF LATE PASSAGE MESENCHYMAL STEM CELLS (MSCS) - The present invention provides methods and compositions relating to the use of late passage mesenchymal stem cells (MSCs) for treatment of cardiac disorders. Such late passage MSCs may be administered to the myocardium of a subject for induction of native cardiomyoctye proliferation and repair of cardiac tissue. Additionally, the late passage MSCs may be genetically engineered to express a gene encoding a physiologically active protein of interest and/or may be incorporated with small molecules for delivery to adjacent target cells through gap junctions. The late passage MSCs of the invention may be used to provide biological pacemaker activity and/or provide a bypass bridge in the heart of a subject afflicted with a cardiac rhythm disorder. The biological pacemaker activity and/or bypass bridge may be provided to the subject either alone or in tandem with an electronic pacemaker. | 02-25-2010 |
20100048650 | TWO PORE CHANNELS AS A THERAPEUTIC TARGET TO PROTECT AGAINST MYOCARDIAL ISCHEMIA AND AS AN ADJUVANT IN CARDIAC SURGERY - The present invention relates to methods and compositions for modulating the activity of two-pore domain K+ channels (“K2P channels”) as a means for inducing preconditioning protection. Such preconditioning can be used to reduce the effect of ischemia associated with ischemic heart disease, myocardial infarcation or cardiac surgery. The invention is based on the discovery that the myoprotective current induced by short periods of ischemia is carried by a non-classical two-pore domain K+ channel. | 02-25-2010 |
20100049273 | USE OF LATE PASSAGE MESENCHYMAL STEM CELLS (MSCS) FOR TREATMENT OF CARDIAC RHYTHM DISORDERS - The present invention provides methods and compositions relating to the use of late passage mesenchymal stem cells (MSCs) for treatment of cardiac rhythm disorders. The late passage MSCs of the invention may be used to provide biological pacemaker activity and/or provide a bypass bridge in the heart of a subject afflicted with a cardiac rhythm disorder. The biological pacemaker activity and/or bypass bridge may be provided to the subject either alone or in tandem with an electronic pacemaker. | 02-25-2010 |
20100075362 | DEVICE AND METHOD FOR GROWING AND ANALYZING CELLS - A device and method for analyzing cells includes a housing with a chamber, a barrier supported by a frame disposed within the chamber, and a plate arranged at a bottom surface of the housing interior of the chamber. The plate is adapted to receive and sustain cells and the barrier separates the plate into at least two contiguous separate areas. In some embodiments, a thin rubber strip is arranged at the bottom edge of the barrier, which facilitates control of the area in which each cell type is grown, the size of the gap between the cells, and helps prevents over growth of the two cell types on to each other. | 03-25-2010 |
20100158805 | QUANTUM DOT LABELED STEM CELLS FOR USE IN CARDIAC REPAIR - The present invention provides methods and compositions relating to the labeling of target cells with quantum dots (QDs). Specifically, a delivery system is disclosed based on the use of negatively charged QDs for delivery of a tracking fluorescent signal into the cytosol of target cells via a passive endocytosis-mediated delivery process. In a specific embodiment of the invention the target cell is a stem cell, preferably a mesenchymal stem cell (MSC). Such labeled MSCs provide a means for tracking the distribution and fate of MSCs that have been administered to a subject to promote cardiac repair. The invention is based on the discovery that MSCs can be tracked in vitro for up to at least 6 weeks. Additionally, QDs delivered in vivo can be tracked for up to at least 8 weeks, thereby permitting for the first time, the complete 3-D reconstruction of the locations of all MSCs following administration into a host. | 06-24-2010 |
20100189701 | METHODS AND COMPOSITIONS TO TREAT ARRHYTHMIAS - The present invention provides compositions and methods of treatment for atrial fibrillation and ventricular tachycardia. The compositions are useful for modifying the conducting properties of heart tissues in which impulses are generating and/or are useful for altering refractoriness without prolonging repolarization. | 07-29-2010 |
20100330050 | USE OF HUMAN STEM CELLS AND/OR FACTORS THEY PRODUCE TO PROMOTE ADULT MAMMALIAN CARDIAC REPAIR THROUGH CARDIOMYOCYTE CELL DIVISION - The present invention relates to methods and compositions for stimulating the proliferation of cardiomyocytes for enhancement of cardiac repair. The invention is based on the discovery that upon contact with stem cells, or conditioned media derived from said stem cells, terminally differentiated cardiomyocytes can be stimulated to enter the cell cycle. Additionally, scaffolds capable of attracting stem cells to the area of implantation have been shown to induce cardiomyocyte proliferation. The present invention further relates to the discovery that the Wnt-5A ligand, which binds to the frizzled receptor (fz), functions to stimulate cardiomyocyte proliferation. The methods and compositions of the invention may be used in the treatment of cardiac disorders including, but not limited to, myocardial dysfunction or infarction. The invention further relates to screening assays designed to identify compounds that modulate the proliferative activity of cardiomyocytes and the use of such compounds in the treatment of cardiac disorders. | 12-30-2010 |
20110041857 | FIBROBLAST DERIVED STEM CELLS - The present invention provides methods and compositions relating to the production of stem cells, derived from dedifferentiated fibroblasts, and the use of such stem cells for treatment of a variety of different disorders and conditions. The invention is based on the surprising discovery that a population of stem cells, capable of differentiating into a variety of different cell types, can be generated by culturing fibroblasts under selective culture conditions. | 02-24-2011 |
20110076773 | Delivery of DNA or RNA via gap junctions from host cells to target cells and a cell-based delivery system for antisense or siRNA - A method of delivering an oligonucleotide or a plasmid expressing an oligonucleotide into a target cell comprises introducing an oligonucleotide into a donor cell, particularly a stem cell, and contacting the target cell with the donor cell under conditions permitting the donor cell to form a gap junction with the target cell, whereby the oligonucleotide or a product of the oligonucleotide is delivered into the target cell from the donor cell. | 03-31-2011 |
20110129449 | COMPENSATING FOR ATRIOVENTRICULAR BLOCK USING A NUCLEIC ACID ENCODING A SODIUM CHANNEL OR GAP JUNCTION PROTEIN - A method of increasing the velocity of AV conduction in a mammal that may be in heart block or at risk of heart block by causing, in an AV node and/or His bundle having less than normal conduction speed, the expression of a sodium channel or gap junction protein, such as the SkM-1 channel, Cx43 or Cx32, so as to increase the velocity of conduction by the AV node. | 06-02-2011 |
20110165128 | HOMING IN MESENCHYMAL STEM CELLS - The present invention relates to expression of CXCR4 in mesenchymal stem cells (MSCs) and homing of MSCs to sites of injury. In particular, the invention provides expanded cultures of MSCs which maintain cell surface expression of CXCR4. The MSCs are capable of homing to sites of injury and are suitable for treatment of ischemic disorders, including cardiac disorders, bone and cartilage disorders, liver disorders, inflammatory disorders, and stroke. | 07-07-2011 |
20110223144 | Creation of a Biological Atrioventricular Bypass to Compensate for Atrioventricular Block - A method of creating an atrioventricular bypass tract for a heart comprises growing mesenchymal stem cells into a strip with two ends, attaching one end of the strip onto the atrium of the heart, and attaching the other end of the strip to the ventricle of the heart, to create a tract connecting the atrium to the ventricle to provide a path for electrical signals generated by the sinus node to propagate across the tract and excite the ventricle. | 09-15-2011 |
20120260355 | Method for Evaluating Inhibitory Polynucleotide Efficiency and Efficacy - The present invention provides a method for testing the efficiency of delivering an inhibitory polynucleotide to a target cell or tissue. The invention also provides a method for testing efficiency of delivering and efficacy for an effect on tumor size of an inhibitory polynucleotide against a target gene. | 10-11-2012 |
20130110218 | Biological Bypass Bridge with Sodium Channels, Calcium Channels and/or Potassium Channels to Compensate for Conduction Block in the Heart | 05-02-2013 |
20130274838 | OPTICAL CONTROL OF CARDIAC FUNCTION - The invention features an optically-controlled biological device that includes a biological component comprising a non-excitable cell expressing a light-gated ion channel protein and capable of forming gap junction channels with a target cell, and an optical stimulation unit. | 10-17-2013 |
20140113314 | Two Pore Channels as a Therapeutic Target to Protect Against Myocardial Ischemia and as an Adjuvant in Cardiac Surgery - The present invention relates to methods and compositions for modulating the activity of two-pore domain K+ channels (“K | 04-24-2014 |
20140303226 | KCNQ CHANNELS AS THERAPEUTIC TARGETS - The present disclosure relates to methods and compositions for modulating the activity of KCNQ channels as a means for reducing the effects of aberrant KCNQ channel function associated with epilepsy, deafness and arrhythmias including but not limited to, Long-QT syndrome (“LQTS”), and atrial fibrillation. The present disclosure also relates to the discovery of certain regions of KCNQ channels that interact with various channel stimulating molecules such as, ATP, and PIP | 10-09-2014 |