Tumor associated macrophages (TAMs) play an important role in the growth, progression, and metastasis of tumors. The distribution of TAMs in Kazakh esophageal squamous cell carcinoma (ESCC) is not determined. We aimed to investigate the role of TAMs in the occurrence and progression of Kazakh ESCC. CD163 was used as the TAM marker, and immunohistochemistry (IHC) counts were used to quantify the density of TAMs in tumor nest and surrounding stroma. IHC staining was used to evaluate the expression of vascular endothelial growth factor C (VEGF-C) in Kazakh ESCC and cancer adjacent normal (CAN) tissues. The density of TAMs in Kazakh ESCCs tumor nest and stromal was significantly higher than that in CAN tissues. The increased number of CD163-positive TAMs in tumor nest and tumor stromal was positively associated with Kazakh ESCC lymph node metastasis and clinical stage progression. Meanwhile, the expression of VEGF-C in Kazakh ESCCs was significantly higher than that in CAN tissues. Overexpression of VEGF-C in Kazakh ESCCs was significantly associated with gender, depth of tumor invasion, lymph node metastasis and tumor clinical stage. The increased number of TAMs, either in the tumor nests or tumor stroma was positively correlated with the overexpression of VEGF-C, which may promote lymphangiogenesis and play an important role in the invasion and metastasis of Kazakh ESCC.

译文

:肿瘤相关的巨噬细胞(TAM)在肿瘤的生长,进展和转移中起重要作用。在哈萨克人食管鳞状细胞癌(ESCC)中TAM的分布尚未确定。我们旨在调查TAM在哈萨克ESCC发生和发展中的作用。 CD163用作TAM标记,免疫组化(IHC)计数用于量化肿瘤巢和周围基质中TAM的密度。 IHC染色用于评估哈萨克斯坦ESCC和癌旁正常组织(CAN)中血管内皮生长因子C(VEGF-C)的表达。哈萨克ESCCs肿瘤巢和基质中TAMs的密度显着高于CAN组织中的TAMs的密度。肿瘤巢和肿瘤基质中CD163阳性TAM数量的增加与哈萨克斯坦ESCC淋巴结转移和临床分期进展呈正相关。同时,哈萨克人食管鳞癌中VEGF-C的表达明显高于CAN组织。哈萨克人食管鳞癌中VEGF-C的过度表达与性别,肿瘤浸润深度,淋巴结转移和肿瘤临床分期显着相关。无论是在肿瘤巢中还是在肿瘤基质中,TAM的数量增加都与VEGF-C的过表达呈正相关,这可能促进淋巴管生成,并在哈萨克ESCC的侵袭和转移中起重要作用。

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