The present invention relates to methods for transfecting cells. In particular, the present invention relates to methods of transfecting primordial germ cells in avians, and to methods of breeding avians with modified traits.

The present invention relates to: a transgenic Caenorhabditis elegans in which a glutamine tRNA 5′ terminus-derived fragment (Gln 5′-tsRNA) is overexpressed; a preparation method therefor; and a method for screening for aging-associated factors by using the transgenic Caenorhabditis elegans. A transgenic Caenorhabditis elegans model provided in the present invention is an animal model in which Gln 5′-tsRNA is overexpressed such that aging is inhibited. When the model of the present invention is used, anti-aging mechanisms can be easily investigated, thereby significantly contributing to various research fields such as that of developing new anti-aging drugs and screening for age-inducing materials.

The present invention relates to: a transgenic Caenorhabditis elegans in which a glutamine tRNA 5′ terminus-derived fragment (Gln 5′-tsRNA) is overexpressed; a preparation method therefor; and a method for screening for aging-associated factors by using the transgenic Caenorhabditis elegans. A transgenic Caenorhabditis elegans model provided in the present invention is an animal model in which Gln 5′-tsRNA is overexpressed such that aging is inhibited. When the model of the present invention is used, anti-aging mechanisms can be easily investigated, thereby significantly contributing to various research fields such as that of developing new anti-aging drugs and screening for age-inducing materials.

A transgenic mouse comprising T30A, S32P, Q33L, N39D, and M470Q mutations in GPIIIa, as well as methods for making the transgenic mouse and methods for using the transgenic mouse to screen test compounds are described.

A transgenic mouse comprising T30A, S32P, Q33L, N39D, and M470Q mutations in GPIIIa, as well as methods for making the transgenic mouse and methods for using the transgenic mouse to screen test compounds are described.

Provided herein are methods, computer programs, and systems for automated microinjection, for example, automated Intracytoplasmic Sperm Injection (ICSI). Methods described herein include creating, by a processing unit, a first dataset of an oocyte and a holding device and a second dataset of an injection pipette; detecting the oocyte and the holding device in the first dataset and the injection pipette in the second dataset; selecting the image of the first dataset and of the second dataset where an equatorial plane of the oocyte/holding device and of the injection pipette has an improved focusing parameter; selecting images of the first and second datasets and labeling the pixels associated with the oocyte and to the injection pipette; detecting a tip of the injection pipette; detecting different morphological structures of the oocyte using artificial intelligence computer vision algorithms on the first dataset; creating an injection trajectory for the injection pipette to perform the ICSI using the detected morphological structures; detecting when the oocyte is rupturing and when the spermatozoa has been released from the injection pipette into the cytoplasm of oocyte.

Provided herein are methods, computer programs, and systems for automated microinjection, for example, automated Intracytoplasmic Sperm Injection (ICSI). Methods described herein include creating, by a processing unit, a first dataset of an oocyte and a holding device and a second dataset of an injection pipette; detecting the oocyte and the holding device in the first dataset and the injection pipette in the second dataset; selecting the image of the first dataset and of the second dataset where an equatorial plane of the oocyte/holding device and of the injection pipette has an improved focusing parameter; selecting images of the first and second datasets and labeling the pixels associated with the oocyte and to the injection pipette; detecting a tip of the injection pipette; detecting different morphological structures of the oocyte using artificial intelligence computer vision algorithms on the first dataset; creating an injection trajectory for the injection pipette to perform the ICSI using the detected morphological structures; detecting when the oocyte is rupturing and when the spermatozoa has been released from the injection pipette into the cytoplasm of oocyte.

Delivering a payload across a plasma membrane of a cell includes providing a population of cells and contacting the population of cells with a volume of an aqueous solution. The aqueous solution includes the payload and alcohol content greater than 5 percent concentration. The volume of the aqueous solution may be a function of exposed surface area of the population of cells, or may be a function of a number of cells in the population of cells. Related compositions, apparatus, systems, techniques, and articles are also described.

Delivering a payload across a plasma membrane of a cell includes providing a population of cells and contacting the population of cells with a volume of an aqueous solution. The aqueous solution includes the payload and alcohol content greater than 5 percent concentration. The volume of the aqueous solution may be a function of exposed surface area of the population of cells, or may be a function of a number of cells in the population of cells. Related compositions, apparatus, systems, techniques, and articles are also described.

Delivering a payload across a plasma membrane of a cell includes providing a population of cells and contacting the population of cells with a volume of an aqueous solution. The aqueous solution includes the payload and alcohol content greater than 5 percent concentration. The volume of the aqueous solution may be a function of exposed surface area of the population of cells, or may be a function of a number of cells in the population of cells. Related compositions, apparatus, systems, techniques, and articles are also described.