Method for imaging and differential analysis of cells
First Claim
Patent Images
1. A method for identifying a specific cell, to enable a determination to be made as to whether the specific cell corresponds to a known cell type, wherein the known cell type relates to the viability of the cell, comprising the steps of:
- providing spatial frequency content data from a side scatter image of the known cell type;
directing incident light at the specific cell, using a detector to obtain the side scatter image of the specific cell;
calculating the spatial frequency content data of the side scatter image of the specific cell by computing a standard deviation of individual pixel intensities within the side scatter image of the specific cell; and
comparing the spatial frequency content data of the side scatter image of the specific cell to the spatial frequency content data of the side scatter image of the known cell type to determine if the specific cell corresponds to the known cell type.
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Abstract
Provided are methods for determining and analyzing photometric and morphogenic features of small objects, such as cells to, for example, identify different cell states. In particularly, methods are provided for identifying apoptotic cells, and for distinguishing between cells undergoing apoptosis versus necrosis.
218 Citations
33 Claims
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1. A method for identifying a specific cell, to enable a determination to be made as to whether the specific cell corresponds to a known cell type, wherein the known cell type relates to the viability of the cell, comprising the steps of:
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providing spatial frequency content data from a side scatter image of the known cell type; directing incident light at the specific cell, using a detector to obtain the side scatter image of the specific cell; calculating the spatial frequency content data of the side scatter image of the specific cell by computing a standard deviation of individual pixel intensities within the side scatter image of the specific cell; and comparing the spatial frequency content data of the side scatter image of the specific cell to the spatial frequency content data of the side scatter image of the known cell type to determine if the specific cell corresponds to the known cell type. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for identifying a specific cell, to enable a determination to be made as to whether the specific cell corresponds to a known cell type, wherein the known cell type relates to the viability of the cell, comprising the steps of:
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providing spatial frequency content data from a brightfield image of the known cell type; directing incident light at the specific cell, using a detector to obtain the brightfield image of the specific cell; calculating spatial frequency content data of the brightfield image of the specific cell by computing a standard deviation of individual pixel intensities within the brightfield image of the specific cell; and comparing the spatial frequency content data of the brightfield image of the specific cell to the spatial frequency content data of the brightfield image of the known cell type to determine if the specific cell corresponds to the known cell type. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method for identifying a specific cell, to enable a determination to be made as to whether the specific cell corresponds to a known cell type, wherein the known cell type relates to the viability of the cell, comprising the steps of:
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providing an image of the known cell type that has been marked with a single nuclear marker; providing spatial frequency content data from the image of the known cell type that has been marked with the nuclear marker; contacting the specific cell with the nuclear marker; directing incident light at the marked specific cell; using a detector to obtain an image of the marked specific cell; calculating spatial frequency content data of the image of the marked specific cell by computing a standard deviation of individual pixel intensities within the image of the marked specific cell; and comparing the image of the marked specific cell and the spatial frequency content data of the image of the marked specific cell to the marked image of the known cell type and the spatial frequency content data of the marked image of the known cell type to determine if the specific cell corresponds to the known cell type. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for classifying a specific cell as one of the following four types of cells, a viable cell, a necrotic cell, an early apoptotic cell in which a cellular membrane of the cell is still intact, and a late apoptotic cell in which the cellular membrane of the cell is not intact, using only a single nuclear marker and image data from the cell, the method comprising the steps of:
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exposing the specific cell to only a single nuclear marker that will bind to DNA in a nucleus of the cell in the event that the cellular membrane of the cell is not intact; collecting image data from the specific cell; using the image data of the specific cell to determine spatial frequency content data of a side scatter image of the specific cell by computing a standard deviation of individual pixel intensities within the side scatter image of the specific cell; and analyzing the image data of the specific cell and the spatial frequency content data of the side scatter image of the specific cell to classify the cell as one of a viable cell, a necrotic cell, an early apoptotic cell, and a late apoptotic cell. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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Specification