MEASURING EMBRYO DEVELOPMENT AND IMPLANTATION POTENTIAL WITH TIMING AND FIRST CYTOKINESIS PHENOTYPE PARAMETERS
Methods, compositions and kits for determining the developmental potential of one or more embryos are provided. These methods, compositions and kits find use in identifying embryos in vitro that are most useful in treating infertility in humans.
1 . A method for deselecting one or more human embryos with poor developmental potential comprising:
(A) in vitro culturing one or more embryos under conditions sufficient for embryo development;
(B) time lapse imaging said one or more embryos for a time period sufficient to measure at least one cell division; and
(C) deselecting an embryo with poor developmental potential when, the embryo displays abnormal cleavage (AC)
thereby deselecting an embryo with poor developmental potential, wherein the embryo with poor developmental potential is not likely to reach the blastocyst stage or successfully implant into the uterus.
2 . The method of claim 1 comprising deselecting an embryo when the embryo displays AC1 and/or AC2.
3 . The method of claim 1 comprising deselecting an embryo when the embryo displays AC2.
4 . The method of claim 1 wherein deselection comprises choosing to not implant the embryo determined to have poor developmental potential into the uterus.
5 . The method of claim 1 further comprising measuring one or more cellular parameters selected from the group consisting of:
(a) the duration of the first cytokinesis;
(b) the time between the first and second mitosis;
(c) the time between the second and third mitosis;
(d) the time interval between cytokinesis 1 and cytokinesis 2;
(e) the time interval between cytokinesis 2 and cytokinesis 3;
(f) the time interval between fertilization and the 5 cell stage;
(g) the duration of the first cell cycle: and
(h) the time interval between syngamy and the first cytokinesis.
6 . The method of claim 1 wherein said one or more embryos are produced by fertilization of oocytes in vitro.
7 . The method of claim 6 wherein said oocytes are matured in vitro.
8 . The method of claim 7 wherein said oocytes matured in vitro are supplemented with growth factors.
9 . The method of claim 1 wherein said one or more embryos have not been frozen prior to culturing.
10 . The method of claim 1 wherein said one or more embryos have been frozen prior to culturing.
11 . The method of claim 1 wherein the deselecting is automated.
12 . The method of claim 1 wherein the deselecting an embryo with poor development potential is automated.
13 . The method of claim 1 wherein said time lapse imaging acquires images that are digitally stored.
14 . The method of claim 1 wherein said time lapse imaging employs darkfield illumination.
15 . The method of claim 1 wherein said one or more human embryos are placed in a culture dish prior to culturing under conditions sufficient for embryo development.
16 . The method of claim 15 wherein said culture dish comprises a plurality of microwells.
17 . The method of claim 1 wherein said culture dish comprises from 1 to about 30 microwells.
18 . The method of claim 16 wherein one or more human embryos is placed within a microwell prior to culturing under conditions sufficient for embryo development.
19 . The method of claim 1 wherein the measuring is carried out at an imaging station.
20 - 69 . (canceled)