Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Class |
|---|---|
| Guangdong Province, Department of Science and Technology | OTHER_GOV |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The investigators study the VEGF signaling in ECC cell lines,patients and its mechanism in ECC growth, proliferation and apoptosis.
Several studies have documented the elevated expression of VEGF, VEGFR1 and VEGFR2 in cancer cell lines. Another study observed a sequential elevation of VEGF in low-grade dysplasia, high-grade dysplasia and early stage liver cancer. Clinical analyses have discovered the high expression of VEGF is correlated with tumor progression, vascular invasion, distal metastasis and poor prognosis. However, few studies have been conducted to investigate the VEGF signaling in ECC cells and its possible mechanism in regulating ECC growth.Therefore,we try to clarify the mechanism of VEGF signal in ECC growth,proliferation and apoptosis.
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| ECC patients | Extrahepatic cholangiocarcinoma patients treated by surgical treatment |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| surgical treatment | Procedure | all the patients in the study must have been treated by the surgery at the first time and have been confirmed as 'complete section' by the post-surgery radiological image. |
| Measure | Description | Time Frame |
|---|---|---|
| the variation of the quantity of VEGF signal pathway genes in normal liver tissue,peri tumor,tumor and metastasis. | the sections would be collected as previously described.Western blot,immunohistochemistry,PCR would be conducted to find out the variation between the normal liver tissue and tumor,tumor and meta(if have). | the day when conducting surgery (day 1) |
Not provided
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Extrahepatic cholangiocarcinoma patients underwent surgical therapy
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Ming Kuang, MD | First Affiliated Hospital, Sun Yat-Sen University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| First Affiliated Hospital, Sun Yat-Sen University | Guangzhou | Guangdong | 510000 | China |
Not provided
| ID | Term |
|---|---|
| D018281 | Cholangiocarcinoma |
| ID | Term |
|---|---|
| D000230 | Adenocarcinoma |
| D002277 | Carcinoma |
| D009375 | Neoplasms, Glandular and Epithelial |
| D009370 | Neoplasms by Histologic Type |
Not provided
Not provided
| ID | Term |
|---|---|
| D013514 | Surgical Procedures, Operative |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Cut tissue into small pieces (~2 mm2)and wash in drops of saline (1x PBS). Place pieces individually into LN2 in Styrofoam cup. Transfer pieces into LN2-cooled 1.5 mL cryovial. Pour out excess LN2 from vial, then seal and keep in LN2 until freezer storage.
| D009369 | Neoplasms |