Real-time Diagnosis of Serum LECT 2 in Patient With Liver Cancer Using Electronic Antibody Sensor (e- Ab Sensor)

To develop a real-time diagnostic technique with e- Ab sensor for specific LECT2 detection in clinical specimens of Hepatocellular carcinoma (HCC) patients, the investigators conduct a prospective clinical study. In comparison with results from direct sequencing of LECT2, the investigators evaluate the performance of e- Ab sensor, including reproducibility, sensitivity, specificity, and cross-reaction. With such technique, the investigators can obtain LECT2 information of HCC patients in cost-saving and time-saving way and can offer more individualized treatment for our patients.

Study Overview

• Status: Unknown
• Conditions: Liver Cancer
• Intervention / Treatment: Device: Electrosensing antibody probing system (e- Ab sensor)

Detailed Description

Hepatocellular carcinoma (HCC) is one of the most common types of cancer in the world. High cancer recurrence is still the major cause of death of HCC patients. The major poor prognostic factors included vascular invasion, high α-FP, large tumor size, or tumor satellitosis, etc. Among the various literature reports with multivariate analysis, vascular invasion of the tumor is the major contribution of high recurrence and poor survival. Therefore, identifying differentially expressed genes between vascular-invasion and non-vascular invasion of HCCs is important.

After suppression subtractive hybridization and microarray experiments, the investigators identified 20 differentially-expressed genes between vascular-invasive, and non-vascular invasive HCCs. One of the most interesting gene is leukocyte cell-derived chemotaxin 2 (LECT2). Further evaluation of the role of LECT2 on HCCs, the investigators found (1) Higher invasiveness, the lower of LECT2 gene expression in the HCC cell lines. (2) Conditioned medium with high LECT2 content will inhibit HCC invasion. (3) The invasion ability decreased in LECT2-overexpression hepatoma cell line. (4) In transendothelial cell migration assay, the investigators could observed invasion ability increased when LECT2 was knockdown in HCC cell line. (5) The lower expression of LECT2 gene in human HCCs correlate with higher tumor stage, early recurrence, and poor prognosis. (6) In vivo experiments revealed LECT2 can inhibit the ability of intravasation or metastatic ability of HCC.

Electrosensing antibody probing system (e- Ab sensor), which was developed for the rapid and sensitive detection of hapten, proteins, or viral antigen in medical samples, will be used for analyzing the interaction kinetics between specific anti- LECT2 and its antigen (LECT2 with liver cancer) present in the specimens of patients with liver cancer. The system incorporates the use of engineered semiconductive antibodies or virus in vertical and lateral chip (eAbchip) or lateral flow through (eAbsignal) formats. In electrosensing antibody probing, semiconductive antibodies are bound as a suitable electrosensing probe, which specifically and selectively binds targeted molecules (i.e. specific LECT2) in the test specimens. From assessment of the electric signature of semiconductive mutation-specific anti-LECT2 antibodies, the eABprobe could offer sensitive detection and precise quantification of specific LECT2.

To develop a real-time diagnostic technique with e- Ab sensor for specific LECT2 detection in clinical specimens of HCC patients, the investigators conduct a prospective clinical study. The investigators evaluate the performance of e- Ab sensor, including reproducibility, sensitivity, specificity, and cross-reaction. With such technique, the investigators can obtain LECT2 information of HCC patients in cost-saving and time-saving way and can offer more individualized treatment for our patients.

• Study Type: Interventional
• Enrollment (Anticipated): 80
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Taiwan
  • Taipei, Taiwan, 10051
    • Recruiting
    • National Taiwan University Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 20 years to 75 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• The patients with liver cancer.
• The patients without liver cancer.

Exclusion Criteria:

1. Inmates, aboriginal peoples, pregnant women, mental patients, students, subordinates and other vulnerable groups.
2. Patients with malignant tumors.
3. Patients will be excluded if they couldn't sign the consent.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: DIAGNOSTIC
• Allocation: NA
• Interventional Model: SINGLE_GROUP
• Masking: NONE

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

EXPERIMENTAL: LECT2 detection; single-arm study: Electrosensing antibody probing system(e-AB sensor)

Device: Electrosensing antibody probing system (e- Ab sensor); Electrosensing antibody probing system (e- Ab sensor), which was developed for the rapid and sensitive detection of hapten, proteins, or viral antigen in medical samples, will be used for analyzing the interaction kinetics between specific anti- LECT2 and its antigen (LECT2 with liver cancer) present in the specimens of patients with liver cancer. The system incorporates the use of engineered semiconductive antibodies or virus in vertical and lateral chip (eAbchip) or lateral flow through (eAbsignal) formats. In electrosensing antibody probing, semiconductive antibodies are bound as a suitable electrosensing probe, which specifically and selectively binds targeted molecules (i.e. specific LECT2) in the test specimens.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The performance of e- Ab sensor	In comparison with results from direct concentration of LECT2, we evaluate the performance of e- Ab sensor, including reproducibility, sensitivity, specificity, and cross-reaction.	1 Day

Collaborators and Investigators

• Sponsor: National Taiwan University Hospital
• Investigators: Principal Investigator: Ming-Chih Ho, MD,PhD, National Taiwan University Hospital

Study record dates

Study Major Dates

• Study Start: September 1, 2010
• Primary Completion (ANTICIPATED): October 1, 2013
• Study Completion (ANTICIPATED): October 1, 2013

Study Registration Dates

• First Submitted: July 1, 2011
• First Submitted That Met QC Criteria: July 5, 2011
• First Posted (ESTIMATE): July 6, 2011

Study Record Updates

• Last Update Posted (ESTIMATE): December 21, 2012
• Last Update Submitted That Met QC Criteria: December 20, 2012
• Last Verified: December 1, 2012

More Information

Terms related to this study

• Keywords: LECT2
• Additional Relevant MeSH Terms: Digestive System Diseases; Neoplasms; Neoplasms by Site; Digestive System Neoplasms; Liver Diseases; Liver Neoplasms; Physiological Effects of Drugs; Immunologic Factors; Antibodies
• Other Study ID Numbers: 201007073R