Expression and clinical significance of ASB6 in colorectal cancer tissues

Abstract

Abstract:ObjectiveTo explore the expression and clinical significance of ASB6 in colorectal cancer tissue.MethodsThe cancer tissues and para-carcinoma tissues were selected from 106 patients with colorectal cancer admitted to the Department of Gastrointestinal Surgery， Third Affiliated Hospital of Shandong First Medical University from January 2015 to January 2018. Immunohistochemical method was used to detect the expression level of ASB6 protein in tissues， and the correlation between its expression and clinical pathological characteristics of patients was analyzed. At the same time， the expression of ASB6 mRNA in colorectal cancer tissues and para-carcinoma tissues was detected by quantitative real-time PCR （qRT-PCR）. The Kaplan-Meier survival analysis method was used to explore the relationship between the expression of ASB6 and prognosis in colorectal cancer patients. The Cox regression model was used to analyze the independent prognostic factors of colorectal cancer patients.ResultsThe high expression rate of ASB6 in colorectal cancer tissues （67.9%， 72/106） was significantly higher than that in para-carcinoma tissues （10.4%，11/106，χ²=73.67，P<0.001）. Further analysis showed that the expression of ASB6 protein was significantly correlated with lymph node metastasis （χ²=7.34，P=0.007） and TNM stage （χ²=16.85，P<0.001）. There was no significant correlation between the expression of ASB6 protein and age （χ²=0.42，P=0.516）， sex （χ²=0.76，P=0.385）， tumor size （χ²=0.91，P=0.341）， tumor location （χ²=2.29，P=0.130）， histological classification （χ²<0.01，P>0.999）， differentiation degree （χ²=2.54，P=0.111） and distant metastasis （χ²=3.38，P=0.066）. qRT-PCR results showed that the expression level of ASB6 mRNA in colorectal cancer tissues was significantly higher than that in para-carcinoma tissues （5.37±0.13vs.3.39±0.09，t=-12.48，P<0.001）. Kaplan-Meier survival analysis showed that the overall 5-year survival rates of patients in the ASB6 high expression group （72 cases） and the ASB6 low expression group （34 cases） were 45.8% and 73.5%， respectively （χ²=6.82，P=0.009）. Univariate survival analysis found that ASB6 protein expression （HR=3.09， 95%CI： 1.25-7.65，P=0.015）， lymph node metastasis （HR=0.41， 95%CI： 0.21-0.82，P=0.011）， distant metastasis （HR=0.20， 95%CI： 0.10-0.42，P<0.001）， and TNM stage （HR=0.10， 95%CI： 0.03-0.32，P<0.001） were prognostic factors， while multivariate Cox survival analysis found that distant metastasis （HR=0.22， 95%CI： 0.09-0.50，P<0.001） and TNM stage （HR=0.25， 95%CI： 0.11-0.58，P<0.001） were independent prognostic factors.ConclusionThe expression of ASB6 in colorectal cancer tissues is significantly higher than that in para-carcinoma tissues， and the prognosis of patients with high expression of ASB6 is significantly worse than that of patients with low expression of ASB6. ASB6 can be used as an important indicator for early monitoring and postoperative survival assessment of colorectal cancer patients in the future.

Key words:Colorectal neoplasms,ASB6,Prognosis

Liu Debao, Sun Ziwen, Lu Shoutang, Xu Haidong. Expression and clinical significance of ASB6 in colorectal cancer tissues[J]. Journal of International Oncology, 2023, 50(8): 470-474.

Figures/Tables4

临床病理特征	例数	ASB6表达		χ²值	P值
临床病理特征	例数	高表达（n=72）	低表达（n=34）	χ²值	P值
年龄（岁）
<60	64	45（70.3）	19（29.7）	0.42	0.516
≥60	42	27（64.3）	15（35.7）	0.42	0.516
性别
男	59	38（64.4）	21（35.6）	0.76	0.385
女	47	34（72.3）	13（27.7）	0.76	0.385
肿块大小（cm）
<5	49	31（63.3）	18（36.7）	0.91	0.341
≥5	57	41（71.9）	16（28.1）	0.91	0.341
肿瘤位置
结肠	39	30（76.9）	9（23.1）	2.29	0.130
直肠	67	42（62.7）	25（37.3）	2.29	0.130
淋巴结转移
有	45	37（82.2）	8（17.8）	7.34	0.007
无	61	35（57.4）	26（42.6）	7.34	0.007
远处转移
有	14	13（92.9）	1（7.1）	3.38	0.066
无	92	59（64.1）	33（35.9）	3.38	0.066
组织学类型
腺癌	95	65（68.4）	30（31.6）	<0.01	>0.999
黏液腺癌	11	7（63.6）	4（36.4）	<0.01	>0.999
分化程度
中分化	79	57（72.2）	22（27.8）	2.54	0.111
低分化	27	15（55.6）	12（44.4）	2.54	0.111
TNM分期
Ⅰ期	10	2（20.0）	8（80.0）	16.85	<0.001
Ⅱ期	46	29（63.0）	17（37.0）
Ⅲ期	38	33（86.8）	5（13.2）
Ⅳ期	12	8（66.7）	4（33.3）

因素	单因素分析			多因素分析
因素	HR值	95%CI	P值	HR值	95%CI	P值
年龄	0.73	0.36~1.49	0.391
性别	0.57	0.28~1.17	0.127
肿块大小	0.78	0.40~1.52	0.464
肿瘤位置	0.62	0.32~1.20	0.157
淋巴结转移	0.41	0.21~0.82	0.011	1.98	0.87~4.50	0.104
远处转移	0.20	0.10~0.42	<0.001	0.22	0.09~0.50	<0.001
组织学类型	1.78	0.69~4.59	0.235
分化程度	1.42	0.68~2.95	0.352
TNM分期	0.10	0.03~0.32	<0.001	0.25	0.11~0.58	<0.001
ASB6表达	3.09	1.25~7.65	0.015	2.05	0.90~4.67	0.086

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