Surface of a vessel with polystyrene, nitrogen, oxygen and a static sessile contact angle for attachment and cultivation of cells
The present invention relates to the field of mammalian cell culture, and provides methods and compositions for cell attachment to, cultivation on and detachment from a solid substrate surface containing from at least about 0.5% N, a sum of O and N of greater than or equal to 17.2% and a contact angle of at least about 13.9 degrees, lacking a feeder cell layer and lacking an adlayer. In one embodiment of the present invention, the cells are treated with a compound capable of inhibiting Rho kinase activity. In another embodiment, the cells are treated with a compound capable of inhibiting Rho activity.
1. A surface that is part of a vessel or matrix intended for use in cell culture or analysis, the surface comprising polystyrene and containing from about 1.6% N to about 2.3% N, a sum-of O and N of greater than or equal to 25.9% and having a static sessile contact angle of at least about 14.3 degrees, lacking a feeder cell layer and lacking an adlayer, wherein the surface allows the attachment and cultivation of cells.
2. A composition comprising the surface of claim 1 and cells attached thereto, wherein the cells are maintained in culture after the cells attach to the surface.
3. The surface of claim 1 , wherein the surface has one of the following features:
contains at least about 1.7% N, a sum of O and N of greater than or equal to 29.6%, and has the contact angle of at least about 14.3 degrees;
contains at least about 2.0% N, a sum of O and N of greater than or equal to 30.7%, and has the contact angle of at least about 18.4 degrees;
contains at least about 2.1% N, a sum of O and N of greater than or equal to 30.2%, and has the contact angle of at least about 17.4 degrees; or
contains at least about 1.8% N, a sum of O and N of greater than or equal to 28.2%, and has the contact angle of at least about 18.8 degrees.
4. The surface of claim 1 , wherein the surface contains at least about 1.7% N, a sum of O and N of greater than or equal to 29.6%, and has the contact angle of at least about 14.3 degrees.
5. The surface of claim 1 , wherein the surface contains at least about 2.0% N, a sum of O and N of greater than or equal to 30.7%, and has the contact angle of at least about 18.4 degrees.
6. The surface of claim 1 , wherein the surface contains at least about 2.1% N, a sum of O and N of greater than or equal to 30.2%, and has the contact angle of at least about 17.4 degrees.
7. The surface of claim 1 , wherein the surface contains at least about 1.8% N, a sum of O and N of greater than or equal to 28.2%, and has the contact angle of at least about 18.8 degrees.
8. The surface of claim 1 , wherein the surface contains a sum of O and N of about 25.9% to about 31.9%.
9. The surface of claim 1 , wherein the contact angle is from about 14.3 degrees to about 18.1 degrees.
10. The composition of claim 2 , wherein the cells are stem cells.
11. The composition of claim 10 , wherein the cells are pluripotent stem cells.