Isolation of Inner Cell Mass for the Establishment of Human Embryonic Stem Cell (hESC) Lines
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Abstract
A method for isolating an inner cell mass comprising the steps of immobilizing a blastocyst stage embryo having a zona pellucida, trophectoderm, and inner cell mass, creating an aperture in the blastocyst stage embryo by laser ablation, and removing the inner cell mass from the blastocyst stage embryo through the aperture. The aperture is through the zona pellucida and the trophectoderm. The laser ablation is acheived using a non-contact diode laser. The inner cell mass removed from the blastocyst stage embryo is used to establish human Embryonic Stem Cell lines.
5 Citations
57 Claims
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1-10. -10. (canceled)
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11. A method for establishing a cell line from the inner cell mass of a human blastocyst, comprising the steps of:
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(a) isolating a blastocyst having a zona pellucida, a trophectoderm, and an inner cell mass;
(b) creating an aperture in the blastocyst by laser ablation;
(c) isolating cells from the inner cell mass from the blastocyst through the aperture; and
(d) culturing the cells to establish a cell line. - View Dependent Claims (12, 13, 14, 15, 16, 17, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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18. A method for establishing a human embryonic stem cell line comprising the steps of:
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(a) isolating cells of an inner cell mass from a blastocyst stage embryo by creating an aperture in the blastocyst stage embryo by laser ablation, and removing cells of the inner cell mass from the blastocyst stage embryo through the aperture;
(b) culturing the cells of the inner cell mass in the presence of an embryonic stem cell medium and an inactivated feeder layer to produce inner cell mass derived masses; and
(c) culturing the inner cell mass derived masses to produce an isolated human embryonic stem cell line. - View Dependent Claims (19, 20, 34, 35, 36, 37)
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38. A method of establishing a human embryonic stem cell line, comprising the steps of:
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(a) isolating a human blastocyst comprising an inner cell mass;
(b) creating an aperture in the blastocyst by laser ablation;
(c) isolating cells from the inner cell mass of the blastocyst through the aperture;
(d) culturing the cells to obtain an isolated human embryonic stem cell line. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A method for establishing a human embryonic stem cell line comprising the steps of:
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(a) isolating cells of an inner cell mass from a blastocyst stage embryo by creating an aperture in the blastocyst stage embryo by laser ablation, and removing cells of the inner cell mass from the blastocyst stage embryo through the aperture;
(b) culturing the cells of the inner cell mass under feeder free conditions to produce inner cell mass derived masses; and
(c) culturing the inner cell mass derived masses to produce an isolated human embryonic stem cell line. - View Dependent Claims (53, 54, 55, 56, 57)
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Specification