摘要:
This invention relates to methods and compounds for the production of sterile fish and other egg-producing aquatic animals. The methods include/the compounds are useful to cause disruption of gonadal development in fish or other egg-producing aquatic animals through the administration of compounds that lead to the failure of fertile gonadal development, and thus to reproductively sterile fish or other egg-producing aquatic animals. The methods and compounds are for use in e.g. aquaculture, the aquarium trade or control of invasive species.
摘要:
A microinjector needle mounting module and a needle holder assembly, comprising a micro-injection needle (1), a needle seat (2) and a needle holder (3); the microinjector mounting module is formed by means of inserting the rear end of the microinjector (1) into a hole in the base (21) of the needle seat; the needle holder (3) is provided with an inner hole (32) passing through the barrel body; a conical socket (24) is provided inside the needle seat (2) and one end of the needle-holder (3) is provided with a conical connector (31), said conical connector (31) and conical socket (24) thus constituting a mutually-complementary insertion connection. In addition to a micro-injection needle being assembled with the needle seat to form a mounting module, other micro-operation needles such as holding pipettes or biopsy needles can also be assembled into a mounting module with said needle seat.
摘要:
Systems, devices, and methods for delivering a biological material into an organelle of a cell are provided. In one aspect, for example, a method for introducing biological material into an organelle of a cell can include bringing into proximity outside of a cell a lance and a preselected biological material, charging the lance with a polarity and a charge sufficient to electrically associate the preselected biological material with a tip portion of the lance, and penetrating an outer portion of the cell with the lance and directing and inserting the lance into the cell but outside of the organelle. The method can further include discharging the lance to release at least a portion of the biological material, charging the lance with an opposite polarity and charge sufficient to electrophoretically drive at least a portion of the biological material into the organelle, and withdrawing the lance from the cell.
摘要:
Systems, devices, and methods for delivering a biological material into a cell are provided. In one example, a lance device for introducing biological material into a cell and configured for use in a nanoinjection system including a microscope is provided. Such a device can include a lance having a tip region and a shaft region, wherein the lance is structurally configured to allow entry and movement of the tip region into the cell along an elongate axis of the tip region and along a focal plane of the microscope. In another example, the lance can be configured to allow substantially horizontal entry and movement of the tip region into the cell.
摘要:
Systems, tip assemblies, methods and kits are provided for introducing material into cells. The tip assemblies include an attachment portion, a channel portion, and a constriction that function to reduce fluid pressure as a fluid passes through the constriction portion from the channel portion, whereby the tip assemblies form pores in the membranes of cells and introduce material into the cells. The material includes for example one selected from the group of: an inorganic compound, a drug, a genetic material, a protein, a carbohydrate, a synthetic polymer, and a pharmaceutical composition.
摘要:
Embodiments of the invention include devices and methods for the release of nucleic acid complexes. In an embodiment the invention includes a nucleic acid delivery particle. The delivery particle can include a polymeric matrix including a polyethyleneglycol containing copolymer and a nucleic acid complex disposed within the polymeric matrix. The nucleic acid complex can include a nucleic acid and a carrier agent. In an embodiment the invention includes a medical device including a first polymeric matrix comprising a first polymer and a plurality of nucleic acid delivery particles disposed within the first polymeric matrix. The medical device can be configured to release the nucleic acid complex when the medical device is implanted within a subject. Other embodiments are included herein.
摘要:
Malignant tumors that are intrinsically resistant to conventional therapies are significant therapeutic challenges. An embodiment of the present invention provides an oncolytic virus capable of killing target cells, such as a tumor cells. In various embodiments presented herein, the oncolytic virus is armed or encodes a therapeutic polypeptide. In at least one embodiment, a recombinant oncolytic virus has been generated that can specifically replicate in cancer cells leading to their destruction and at the same time secrete robust amounts of an angiostatic factor to inhibit the regrowth of residual disease. Compositions and methods disclosed herein have broad therapeutic applicability.
摘要:
Provided herein are methods and apparatuses for transfecting a cell with a compound of interest by stressing the cell, e.g. with shear stress. The compound of interest may be nucleic acids, proteins, molecules, nanoparticles, drugs, etc., or any combination thereof. Methods of printing cells with an inkjet printing device are also provided, wherein at least a portion of viable cells (preferably at least 1%) are transfected with a compound of interest. Preferably, at least 25% of the cells are viable after printing. In addition, methods of forming an array of viable cells are provided wherein at least a portion of the viable printed cells (preferably at least 1%) are transfected with at least one compound of interest.
摘要:
A nanostructured molecular delivery vehicle comprising magnetic materials and configured to receive passenger biomolecules. The application of a an appropriate magnetic field having a gradient orients and drives the vehicle into a biological target, which may comprise cells,cell masses, tissue slices, tissues, etc. Under the control of the magnetic field, these vehicles can penetrate cell membranes. Then, the biomolecules carried by the vehicle can be released into the cells to perform their functions. Using this "nanospearing" technique, unprecendented high transfection efficiency has been achieved in several difficult-to-transfect cells. These include, but are not limited to, Bal 17 cells, ex vivo B cells, primary cultured cortical neurons, etc. This method advances the state of the art, providing an improved technique for the introduction of exogenous molecules to cells, with the clinical applications including, but not being limited to, drug delivery, gene therapy, vaccination, etc.