Search Results - biotechnology

This invention provides a method to improve the functionality and/or fertility of sperm by subjecting the isolated sperm to a starvation protocol and/or ionophore. Said sperm can be used to increase artificial insemination by reducing the number of sperm needed as well as improving conception rates.

This invention provides devices and methods for the interrogation of molecular structure and function of virtually any biological tissue  by allowing histological analyses of large biological tissues with numerous biomarkers (antibodies, RNAs, chemical labels). In addition, this technique maintains the integrity of large tissue samples making it possible to perform multiple rounds of histological staining to resolve 3-D organization of biological structures at the macroscopic and microscope scale.

This invention demonstrates that let-7 miRNA  regulates T cell responses and offers a strategy in developing next-generation immunotherapies by preserving the multipotency of effector cells rather than enhancing the efficacy of differentiation.

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This invention provides a new strategy for nucleic acid delivery by using novel cross-linkable and surface-charge modifiable synthetic polymers. The use of the novel polymer system allows for robust nuclecid-polymer complexation, easy removal of cationic moieties of the polymer and self-crosslinking of the polymer in a single step, and stimuli-responsive release of the nucleic acid molecules in the cell.

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This invention provides structurally well-defined, three-dimensional bone tissue grafts produced from stacked demineralized bone paper (DBP), methods for treating a subject using such bone tissue grafts, methods for making DBP, and in vitro assay systems and methods for assaying the effect of an agent on bone development or health.

This invention provides economical, bio-interactive surfaces and surface treatment methods for selective capture of targeted epithelial cells or other cell types from cell mixtures or complex biological fluids. Preparation or fabrication of the engineered surfaces provided by this technology does not require the use of expensive and unstable biomolecular materials, and the resulting surfaces can distinguish different cell types or cells that express different levels of the same surface adhesion marker. Such engineered surfaces can be used as economical tools for assessment of cancer risk, cancer diagnosis, and tracking of the effectiveness of cancer treatments, among other potential applications.

This invention provides economical, renewable surfaces and related methods for selective capture of bacteria in a fluid medium and for killing and/or release of the captured bacteria. The fabrication of these surfaces or surface-treated substrate materials does not require the use of expensive biomolecules and toxic chemicals. The surfaces capture and kill bacteria on contact without leaching any toxic antimicrobial agents. The surfaces can rapidly release captured or killed bacteria via mechanical means, and thus are easily renewable for subsequent round of bacterial capture, killing and release, which makes them ideal for use in on-line bacterial sensor systems. In addition, the surfaces can be engineered to selectively capture bacteria from complex fluid media or selectively capture one bacterial strain over another.