| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T1 |
0-78 |
DRI_Background |
denotes |
Microfluidic model of ductal carcinoma in situ with 3D, organotypic structure. |
| T2 |
88-244 |
DRI_Background |
denotes |
D: Ductal carcinoma in situ (DCIS) is a non-invasive form of breast cancer that is thought to be a precursor to most invasive and metastatic breast cancers. |
| T3 |
245-398 |
DRI_Challenge |
denotes |
Understanding the mechanisms regulating the invasive transition of DCIS is critical in order to better understand how some types of DCIS become invasive. |
| T4 |
399-584 |
DRI_Background |
denotes |
While significant insights have been gained using traditional in vivo and in vitro models, existing models do not adequately recapitulate key structure and functions of human DCIS well. |
| T5 |
585-683 |
DRI_Background |
denotes |
In addition, existing models are time-consuming and costly, limiting their use in routine screens. |
| T6 |
684-898 |
DRI_Challenge |
denotes |
Here, we present a microscale DCIS model that recapitulates key structures and functions of human DCIS, while enhancing the throughput capability of the system to simultaneously screen numerous molecules and drugs. |
| T7 |
908-959 |
DRI_Approach |
denotes |
Our microscale DCIS model is prepared in two steps. |
| T8 |
960-1089 |
DRI_Background |
denotes |
First, viscous finger patterning is used to generate mammary epithelial cell-lined lumens through extracellular matrix hydrogels. |
| T9 |
1090-1175 |
DRI_Approach |
denotes |
Next, DCIS cells are added to fill the mammary ducts to create a DCIS-like structure. |
| T10 |
1176-1318 |
DRI_Approach |
denotes |
For coculture experiments, human mammary fibroblasts (HMF) are added to the two side channels connected to the center channel containing DCIS. |
| T11 |
1319-1457 |
DRI_Outcome |
denotes |
To validate the invasive transition of the DCIS model, the invasion of cancer cells and the loss of cell-cell junctions are then examined. |
| T12 |
1458-1513 |
DRI_Unspecified |
denotes |
A student t-test is conducted for statistical analysis. |
| T13 |
1523-1723 |
DRI_Outcome |
denotes |
We demonstrate that our DCIS model faithfully recapitulates key structures and functions of human mammary DCIS and can be employed to study the mechanisms involved in the invasive progression of DCIS. |
| T14 |
1724-1868 |
DRI_Background |
denotes |
First, the formation of cell-cell junctions and cell polarity in the normal mammary duct, and the structure of the DCIS model are characterized. |
| T15 |
1869-1936 |
DRI_Background |
denotes |
Second, coculture with HMF is shown to induce the invasion of DCIS. |
| T16 |
1937-2013 |
DRI_Outcome |
denotes |
Third, multiple endpoint analyses are demonstrated to validate the invasion. |
| T17 |
2027-2154 |
DRI_Outcome |
denotes |
We have developed and characterized a novel in vitro model of normal and DCIS-inflicted mammary ducts with 3D lumen structures. |
| T18 |
2155-2302 |
DRI_Background |
denotes |
These models will enable researchers to investigate the role of microenvironmental factors on the invasion of DCIS in more in vivo-like conditions. |