Experimental studies using engineered colon cancer cell lines show that exogenous expression of GATA3 decreases three-dimensional colony growth and invasiveness of colon cancer cells but does not affect two-dimensional proliferation.
These, together with the tumor spheroid growth kinetic and viability assays will allow a complete analytical package to bridge the gap between simple two-dimensional proliferation assays and in vivo studies.
While there has been some doubt regarding the effectiveness of PDK1-directed inhibition on in vitro two-dimensional proliferation, both genetic ablation and pharmacological inhibition of PDK1 was sufficient to reduce soft agar colony formation of a panel of cancer cell lines, suggesting a role for PDK1 in anchorage-independent cell growth.
Major findings were that cell attachment, three-dimensional ingrowth and proliferation were very good on both materials.
In mixed three-dimensional colonies, pLUM proliferation is stimulated by presence of pLB cells or by LB-conditioned media.
In addition to the anti-proliferative effects seen in the 2-dimensional viability and proliferation assays, we also tested the ability of HCI2509 to impair anchorage-independent growth in soft agar.
Computer simulations of the model indicate that only certain parameter regions of the three-dimensional parameter space (proliferation capacity, migration rate and cell death rate) are consistent with malignant tumour growth, and that the dependence can be complicated.
These could include studying alternative protein coatings such as collagen II and decorin, adding growth factors such as transforming growth factor-β I (TGF-β I), fibroblast growth factor-II (FGF-II) and IGF-I to the culture medium, or culturing the cells in novel two-dimensional or three-dimensional environments that support proliferation while maintaining morphology [ 18, 22, 25, 48- 52].
We conclude that alginate microcapsules can act as three-dimensional matrix for ATSC proliferation and has potential for use as injectable, biodegradable scaffold in bone tissue engineering.
Interstitial flow can modulate many cellular processes in a 3-dimensional (3D) microenvironment including proliferation, apoptosis, differentiation, and migration [1] [5].
The cells exhibit high levels of viability, proliferation, three- dimensional (3D) cell morphology and other functions in the constructs.
