Abstract
Objective. Increased glucose uptake and utilization is a known phenomenon exhibited by malignant cells. Overexpression of the glucose transporter protein family is thought to be the principal mechanism by which these cells achieve up-regulation. Our purpose is to determine glucose transporter-1 (GLUT 1) expression in squamous carcinoma of the cervix and precursor lesions. Methods. Archival histologic sections were obtained from 31 cases of invasive squamous cell carcinoma (SCC) of the uterine cervix, 15 cases of high-grade cervical intraepithelial neoplasia, 5 cases of low-grade, and 9 normal cervices. Immunohistochemistry for GLUT 1 protein was performed using polyclonal GLUT 1 antibody (Dako, Carpinteria, CA) and the labeled streptavidin-biotin procedure. Results. Compared to the internal control, the pattern of staining varied from weak (1+) to strong (3+) reactions. In normal cervix, 1+ GLUT 1 staining was seen in the basal cells of the squamous epithelium. All 31 (100%) cases of SCC were positive for GLUT 1. Positive reactions seemed more intense in tumor cells that were farther away from the stromal blood supply. There was a correlation between intensity of reaction for GLUT 1 and histologic grade of tumor (P = 0.0027) and with progression from normal or dysplastic lesions to invasive cancer (P = 0.0001). Intensity was a predictor of the presence of poorly differentiated tumor type. Low-grade CIN staining was seen in less than one-third of the epithelium, while in high-grade lesions the reaction was present in over one-half of the epithelium. Conclusions. GLUT 1 is overexpressed in cervical carcinoma. The process appears to be related to grade of tumor but not to the progression from preneoplastic lesions. The results suggest that GLUT 1 overexpression is a late phenomenon in cellular transformation. Furthermore, the possible relation of expression to tumor blood supply suggests that the malignant cells may have an adaptive environmental ability to compensate for a compromised microenvironment.
| Original language | English |
|---|---|
| Pages (from-to) | 138-143 |
| Number of pages | 6 |
| Journal | Gynecologic Oncology |
| Volume | 86 |
| Issue number | 2 |
| DOIs | |
| State | Published - Sep 11 2002 |
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Keywords
- Cervical cancer
- Cervical intraepithelial neoplasia
- Glucose transporters
- GLUT 1
- Immunohistochemistry
ASJC Scopus subject areas
- Obstetrics and Gynecology
- Oncology
Cite this
Expression of glucose transporter-1 in cervical cancer and its precursors. / Mendez, Luis E.; Manci, Natalina; Cantuaria, Guilherme; Gomez-Marin, Orlando W; Penalver, Manuel; Braunschweiger, Paul G; Nadji, Mehrdad.
In: Gynecologic Oncology, Vol. 86, No. 2, 11.09.2002, p. 138-143.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Expression of glucose transporter-1 in cervical cancer and its precursors
AU - Mendez, Luis E.
AU - Manci, Natalina
AU - Cantuaria, Guilherme
AU - Gomez-Marin, Orlando W
AU - Penalver, Manuel
AU - Braunschweiger, Paul G
AU - Nadji, Mehrdad
PY - 2002/9/11
Y1 - 2002/9/11
N2 - Objective. Increased glucose uptake and utilization is a known phenomenon exhibited by malignant cells. Overexpression of the glucose transporter protein family is thought to be the principal mechanism by which these cells achieve up-regulation. Our purpose is to determine glucose transporter-1 (GLUT 1) expression in squamous carcinoma of the cervix and precursor lesions. Methods. Archival histologic sections were obtained from 31 cases of invasive squamous cell carcinoma (SCC) of the uterine cervix, 15 cases of high-grade cervical intraepithelial neoplasia, 5 cases of low-grade, and 9 normal cervices. Immunohistochemistry for GLUT 1 protein was performed using polyclonal GLUT 1 antibody (Dako, Carpinteria, CA) and the labeled streptavidin-biotin procedure. Results. Compared to the internal control, the pattern of staining varied from weak (1+) to strong (3+) reactions. In normal cervix, 1+ GLUT 1 staining was seen in the basal cells of the squamous epithelium. All 31 (100%) cases of SCC were positive for GLUT 1. Positive reactions seemed more intense in tumor cells that were farther away from the stromal blood supply. There was a correlation between intensity of reaction for GLUT 1 and histologic grade of tumor (P = 0.0027) and with progression from normal or dysplastic lesions to invasive cancer (P = 0.0001). Intensity was a predictor of the presence of poorly differentiated tumor type. Low-grade CIN staining was seen in less than one-third of the epithelium, while in high-grade lesions the reaction was present in over one-half of the epithelium. Conclusions. GLUT 1 is overexpressed in cervical carcinoma. The process appears to be related to grade of tumor but not to the progression from preneoplastic lesions. The results suggest that GLUT 1 overexpression is a late phenomenon in cellular transformation. Furthermore, the possible relation of expression to tumor blood supply suggests that the malignant cells may have an adaptive environmental ability to compensate for a compromised microenvironment.
AB - Objective. Increased glucose uptake and utilization is a known phenomenon exhibited by malignant cells. Overexpression of the glucose transporter protein family is thought to be the principal mechanism by which these cells achieve up-regulation. Our purpose is to determine glucose transporter-1 (GLUT 1) expression in squamous carcinoma of the cervix and precursor lesions. Methods. Archival histologic sections were obtained from 31 cases of invasive squamous cell carcinoma (SCC) of the uterine cervix, 15 cases of high-grade cervical intraepithelial neoplasia, 5 cases of low-grade, and 9 normal cervices. Immunohistochemistry for GLUT 1 protein was performed using polyclonal GLUT 1 antibody (Dako, Carpinteria, CA) and the labeled streptavidin-biotin procedure. Results. Compared to the internal control, the pattern of staining varied from weak (1+) to strong (3+) reactions. In normal cervix, 1+ GLUT 1 staining was seen in the basal cells of the squamous epithelium. All 31 (100%) cases of SCC were positive for GLUT 1. Positive reactions seemed more intense in tumor cells that were farther away from the stromal blood supply. There was a correlation between intensity of reaction for GLUT 1 and histologic grade of tumor (P = 0.0027) and with progression from normal or dysplastic lesions to invasive cancer (P = 0.0001). Intensity was a predictor of the presence of poorly differentiated tumor type. Low-grade CIN staining was seen in less than one-third of the epithelium, while in high-grade lesions the reaction was present in over one-half of the epithelium. Conclusions. GLUT 1 is overexpressed in cervical carcinoma. The process appears to be related to grade of tumor but not to the progression from preneoplastic lesions. The results suggest that GLUT 1 overexpression is a late phenomenon in cellular transformation. Furthermore, the possible relation of expression to tumor blood supply suggests that the malignant cells may have an adaptive environmental ability to compensate for a compromised microenvironment.
KW - Cervical cancer
KW - Cervical intraepithelial neoplasia
KW - Glucose transporters
KW - GLUT 1
KW - Immunohistochemistry
UR - http://www.scopus.com/inward/record.url?scp=0036354858&partnerID=8YFLogxK
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U2 - 10.1006/gyno.2002.6745
DO - 10.1006/gyno.2002.6745
M3 - Article
VL - 86
SP - 138
EP - 143
JO - Gynecologic Oncology
JF - Gynecologic Oncology
SN - 0090-8258
IS - 2
ER -