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Detection of the status of tumour-infiltrating CD4+ T-cell subpopulations in squamous cell carcinoma of the head and neck (HNSCC) using real-time RT-PCR detection of CD4 mRNA
Cellular & Molecular Biology Letters volume 12, pages 308–316 (2007)
Abstract
Several studies have reported tumour infiltrating CD4+ T cells as a favourable prognostic factor in some types of cancer. We investigated 37 head and neck squamous cell carcinomas (HNSCC) at different stages, using immunohistochemical staining for CD4+ infiltrates and real-time reverse transcription polymerase chain reaction (RT-PCR) detection of CD4 mRNA. The CD4+ infiltrates were evaluated and expressed as a percentage according to the ratio of CD4+ T cells to epithelial cells in the cancer cell nests and to the overall inflammatory cell infiltrate in the tumor stroma. The CD4 mRNA expression level strongly correlated with the CD4+ infiltration score in the cancer epithelium (rs = 0.858, P < 0.001) and in the cancer stroma (rs = 0.797, P < 0.001). These results indicate that the real-time RT-PCR assay is a sensitive and reliable method for the detection of CD4 mRNA, and that it could be used to reassess CD4+ infiltration status in resected specimens from patients with HNSCC.
Abbreviations
- ECL:
-
enhanced chemiluminiscence
- EDTA:
-
ethylendiaminetetraacetic acid
- F:
-
female
- HNSCC:
-
head and neck squamous cell carcinoma
- Hpx:
-
hypopharynx
- IHC:
-
immunohistochemistry
- IL:
-
interleukin
- Lrx:
-
larynx
- M:
-
male
- MHC:
-
major histocompatibility complex
- NFDM:
-
non-fat dry milk
- PBS:
-
phosphate buffer saline
- PCR:
-
polymerase chain reaction
- PMSF:
-
phenylmethylsulfonyl fluoride
- pTNM:
-
pathological Tumour Node Metastasis classification of cancer
- RT:
-
room temperature
- RT-PCR:
-
reverse transcriptase polymerase chain reaction
- SD:
-
standard deviation
- SDS:
-
sodium dodecyl sulfate
- Th:
-
T-helper immune cells
- TRI reagent:
-
TRIZOL reagent
- SPSS:
-
Statistical Package for the Social Sciences
- UICC:
-
International Union Against Cancer (Union Internationale Contre le Cancer)
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Smerkolj, S., Volavšek, M. & Glavač, D. Detection of the status of tumour-infiltrating CD4+ T-cell subpopulations in squamous cell carcinoma of the head and neck (HNSCC) using real-time RT-PCR detection of CD4 mRNA. Cell Mol Biol Lett 12, 308–316 (2007). https://doi.org/10.2478/s11658-007-0004-3
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DOI: https://doi.org/10.2478/s11658-007-0004-3