干细胞标志物CXCR - 4和CD133预示侵袭性表型,二者双阳性表明口腔鳞状细胞癌预后不良。

Stem Cell Markers CXCR-4 and CD133 Predict Aggressive Phenotype and Their Double Positivity Indicates Poor Prognosis of Oral Squamous Cell Carcinoma.

作者信息

Caspa Gokulan Ravindran, Devaraj Halagowder

机构信息

Unit of Biochemistry, Department of Zoology, Guindy Campus, University of Madras, Chennai 600085, Tamil Nadu, India.

出版信息

Cancers (Basel). 2021 Nov 23;13(23):5895. doi: 10.3390/cancers13235895.

Abstract

The activation of the SDF-1/CXCR-4 pathway is crucial for the invasion and metastasis of oral cancer cells. The CXCR-4 positive cells possess stem cell characteristics and express the cancer stem cell marker, CD133, in tumors of colon and pancreas. Despite several studies, the co-expression of CXCR-4 and CD133 and its significance is still largely unknown in oral cancer. Therefore, we aimed to investigate the impact of CXCR-4 and CD133 double positivity in the prognosis of oral cancer. The significance of PKC-δ, one of the key signaling molecules that regulates CXCR-4, was also analyzed. Immunohistochemistry and double immunofluorescence was used to investigate the co-localization of CXCR-4, PKC-δ and CD133 in the human tissues and cell lines of oral squamous cell carcinoma. The expression of CXCR-4, PKC-δ and CD133 were found to be higher in poorly differentiated and lymph node metastasis-positive cases. Interestingly, CXCR-4 positive cells showed positive staining for PKC-δ and CD133 in oral cancer tissue and cell lines. Moreover, CXCR-4+/CD133+ and CXCR-4+/PKC-δ+ double positive cases have the worst survival. We discovered, for the first time, that patients with expression of both CXCR-4 and CD133 have a lower survival rate, and CXCR-4+/CD133+, as well as CXCR-4+/PKC-δ+ double positivity, can be utilized to predict poor prognosis. CXCR-4, PKC-δ and CD133 might regulate aggressiveness and invasion of oral cancer cells.

摘要

SDF-1/CXCR-4信号通路的激活对口腔癌细胞的侵袭和转移至关重要。CXCR-4阳性细胞具有干细胞特征,并在结肠癌和胰腺癌肿瘤中表达癌症干细胞标志物CD133。尽管已有多项研究,但CXCR-4和CD133的共表达及其意义在口腔癌中仍 largely未知。因此,我们旨在研究CXCR-4和CD133双阳性对口腔癌预后的影响。还分析了调节CXCR-4的关键信号分子之一PKC-δ的意义。采用免疫组织化学和双重免疫荧光法研究CXCR-4、PKC-δ和CD133在口腔鳞状细胞癌人体组织和细胞系中的共定位。发现CXCR-4、PKC-δ和CD133在低分化和淋巴结转移阳性病例中的表达较高。有趣的是,在口腔癌组织和细胞系中,CXCR-4阳性细胞对PKC-δ和CD133呈阳性染色。此外,CXCR-4+/CD133+和CXCR-4+/PKC-δ+双阳性病例的生存率最差。我们首次发现,同时表达CXCR-4和CD133的患者生存率较低,CXCR-4+/CD133+以及CXCR-4+/PKC-δ+双阳性可用于预测预后不良。CXCR-4、PKC-δ和CD133可能调节口腔癌细胞的侵袭性和侵袭能力。 (注:原文中“largely”未准确翻译,推测可能是“很大程度上”之类意思,但根据要求未调整表述)

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2137/8656999/ce8bb18e390d/cancers-13-05895-g001.jpg

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