J Cancer 2017; 8(17):3522-3530. doi:10.7150/jca.20227 This issue Cite

Research Paper

Combination of plasma HA and circulating M2-like monocytes may serve as a diagnostic marker for breast cancer

Boke Zhang1*, Manlin Cao2*, Yiqing He1, Yiwen Liu1, Guoliang Zhang1, Cuixia Yang1, Yan Du1, Jing Xu3, Jiajie Hu1, Feng Gao4 Corresponding address

1. Department of Molecular Biology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, PR China;
2. Department of Rehabilitation Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, PR China;
3. Department of Clinical Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, PR China;
4. Department of Molecular Biology and Clinical Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road, Shanghai 200233, PR China.
* Both are co-first authors

Citation:
Zhang B, Cao M, He Y, Liu Y, Zhang G, Yang C, Du Y, Xu J, Hu J, Gao F. Combination of plasma HA and circulating M2-like monocytes may serve as a diagnostic marker for breast cancer. J Cancer 2017; 8(17):3522-3530. doi:10.7150/jca.20227. https://www.jcancer.org/v08p3522.htm
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Abstract

Background: Breast cancer (BC)-derived hyaluronan (HA) can induce the formation of M2-like tumor-associated macrophages (TAMs) in tumor context. However, little is known about the correlation between circulating M2-like monocytes and plasma HA in BC patients. This study focused on evaluating the relationship between circulating M2-like monocytes and plasma HA, and further appraised the diagnostic value of them in BC.

Methods: The expression of M2-like TAMs and HA was determined in pathological tissues by immunohistochemistry. Flow cytometry was used to detect the levels of circulating CD14+CD204+ M2-like monocytes in 81 BC patients, 45 patients with breast benign diseases, and 46 healthy subjects. The levels of HA, CEA, and CA15-3 were measured in plasma samples using chemiluminescence method.

Results: M2-like TAMs and HA expressions were elevated in BC tissues compared with benign tissues. In correspondence, the frequency of circulating CD14+CD204+ M2-like monocytes and the plasma HA levels were significantly higher in patients with BC than those in control groups. Importantly, there was a positive correlation between circulating M2-like monocytes and the plasma HA (Spearman r = 0.404, p < 0.001). Area under receiver operating characteristic curve (ROC) for the combination of circulating M2-like monocytes and HA was 0.899 (95% CI: 0.853-0.946), which was higher than the panel of CEA and CA15-3.

Conclusions: The frequency of circulating CD14+CD204+ M2-like monocytes was positively correlated to plasma HA levels. The combination of circulating CD14+CD204+ M2-like monocytes and plasma HA could provide considerable diagnostic value in BC.

Keywords: Breast cancer, CD163, CD204, biomarker, diagnosis

Introduction

Breast cancer (BC) remains one of the most prevalent cancers worldwide and a leading cause of cancer-related mortality in China [1, 2]. Early detection and diagnosis are important to reduce mortality and improve long-term survival. Unfortunately, the best available approach by mammographic screening has several limitations that include the use of ionizing radiation and poor diagnostic accuracy. Tumor biomarkers in peripheral blood are effective and non-invasive screening tools. However, the frequently used biomarkers of breast cancer, including carcinoembryonic antigen (CEA) and cancer antigen 15-3 (CA15-3), are elevated most of the time in advanced stages and lack sensitivity at early stages [3]. Therefore, it is urgent to search for other biomarkers with high sensitivity for screening and diagnosis of breast cancer patients.

Macrophages are often found in the tumor stroma, where macrophages are induced to tumor-associated macrophages (TAMs) [4, 5]. Macrophages are heterogeneous in population and can be differentiated into M1-like and M2-like macrophages [4, 6]. According to phenotype, function, and expression of cytokines, TAMs usually resemble the M2-like macrophages, which promote tumor growth and progression in BC patients [7, 8]. Some microenvironmental stimuli are shown to influence the phenotype of TAMs in breast tumors. For example, several anti-inflammatory mediators, including IL-4, IL-10, IL-13, TGF-β, and M-CSF, lead to the formation of M2-like macrophages [4, 7]. However, tumor microenvironment includes both cellular and noncellular (matrix) components. Hyaluronan (HA) is one of the main extracellular matrix constituent. In breast cancer, increased levels of HA promote tumor progression and are correlated with tumor cell proliferation and migration [9, 10]. Stromal-derived HA can serve as a microenvironmental signal for TAMs recruitment and remodel the local microenvironment to promote tumor angiogenesis in a mouse mammary tumor model [11]. Moreover, accumulation of HA facilitates macrophages infiltration in breast cancer tissue and HA fragments are capable of enhancing macrophage differentiation into a phenotype of M2-like macrophages [12-14]. Therefore, there is a close relationship between TAMs and HA in breast tumor microenvironment, but little is known about the correlation between them in peripheral blood of BC patients.

Recently, several studies suggested that M2-like TAMs in breast cancer tissue could migrate into peripheral blood to become circulating M2-like monocytes and facilitate breast tumor metastasis [15-17]. Furthermore, circulating M2-like monocytes are elevated in some cancers, such as lung cancer [18], colorectal cancer [19], and classical Hodgkin Lymphoma [20]. Therefore, circulating M2-like monocytes may serve as a new tumor biomarker for breast cancer. In our previous study, we have demonstrated that serum HA concentrations were elevated in breast cancer patients [10]. These findings suggest that circulating M2-like monocytes and HA constitute a potential panel combining biomarkers for breast cancer screening. In this study, we investigated the relationship of the circulating M2-like monocytes with plasma HA in BC patients, with the purpose of identifying the combined biomarkers for the diagnosis of breast cancer.

Materials and Methods

Study subjects

The study was conducted according to the revised Declaration of Helsinki, 2013. Informed consent was obtained from all participants and the study protocol was approved by the Ethics Committee of Shanghai Jiao tong University. Blood samples were collected from 81 breast cancer patients and the control groups, which contained 45 patients with benign breast disease and 46 age-matched healthy subjects. All patients were diagnosed by histological evaluation for the first time at Shanghai Cancer Center before they received any treatment. All healthy volunteers were also free of any medications and had no cancer, infectious diseases, and others. The clinical characteristics of patients and healthy subjects were shown in Table 1.

Sample preparation and storage

Two ml peripheral blood samples were drawn into EDTA tubes and transported on ice to the laboratory. Firstly, 100 μl blood samples were stained with the fluorescently-labeled anti-human monoclonal antibodies and analyzed by flow cytometry within 24 hours. After staining, the residual blood was centrifuged at 1000×g at 4°C for 10 min to collect plasma, which was transferred into plain polypropylene tubes and stored at -20°C for further assay.

Flow cytometry analysis

To determine the frequency of the circulating M2-like monocytes, peripheral blood samples were labeled with 7.5 μl FITC-anti-CD14 (Beckman Coulter, France) and 6 μl PE-anti-CD204 (R&D Systems, USA), and incubated for 15 min at room temperature in the dark. Subsequently, the blood cells were lysed and fixed with 2 ml of FACS lysing solution. The isotype-matched controls of FITC-IgG1 and PE-IgG2a were used as negative controls. The circulating CD14+CD204+ monocytes were detected using a FACS Navios flow cytometer (Beckman Coulter, USA) and data were analyzed with FlowJo software (Tree Star, Inc. USA).

 Table 1 

The clinical characteristics of all subjects

CharacteristicsHealthy control (n = 46)Benign group (n = 45)Malignant group (n = 81)
Age(year)49.80 ± 7.4549.84 ± 7.9553.09 ± 9.72
Histology type (NO. of patients)Adenosis (20, 44.4%)Invasive ductal carcinoma (54, 66.7%)
Fibroadenoma (10, 22.2%)Invasive lobular carcinoma (13, 16.0%)
Intraduct papilloma (8, 17.8%)Ductal carcinoma in situ (7, 8.6%)
Fiber epithelioma (4, 8.9%)Intraductal papillary carcinoma (5, 6.2%)
Others (3, 6.7%)Others (2, 2.5%)
WBC (×109/L)5.66 ± 0.985.98 ± 1.126.01 ± 1.45
Monocytes (×109/L)0.31 ± 0.100.35 ± 0.090.35 ± 0.11

Plasma concentrations of CA15-3, CEA, and HA

The concentrations of plasma hyaluronan (HA; Maglumi 2000, China), carcinoembryonic antigen (CEA; Architect i2000SR, Abbott, USA), and cancer antigen 15-3 (CA15-3; cobas e601, Roche, Switzerland), were measured by chemiluminescence method according to the manufacturer's instructions.

Immunohistochemistry

Immunohistochemical staining of HA and CD204 were performed using the formalin-fixed, paraffin-embedded biopsy specimens of breast cancer and breast benign disease. Briefly, 5-μm sections were deparaffinized, rehydrated and microwaved in sodium citrate for antigen-retrieval. The sections were blocked at room temperature for 1 h with 5% BSA in PBS. For HA staining, the slides were incubated with biotinylated HABP (Merck, Germany, dilution: 1:50) at 4ºC overnight. Slides were then washed three times with PBS and incubated with Streptavidin-ABC for 30 min at room temperature. To detect CD204 expression, the slides were incubated with anti-human CD204 antibodies (Molecular Probes, USA, dilution: 1:100) overnight at 4ºC. Next day, the slides were rinsed with PBS before incubation with biotinylated secondary antibody (Boster, China) for 30 min at room temperature. After removing non-reacted secondary antibodies, the sections were incubated with Streptavidin-ABC and then developed with DAB Substrate Kit to visualize the immunolabeling.

Statistical analysis

All statistical analyses and figures were performed with SPSS 20.0 (IBM, USA). Unpaired t test or one-way ANOVA turkey's multiple comparisons were used to analyze normally distributed data (presented as the mean ± SD). Non-normally distributed values were expressed as a median (P25-P75), which were evaluated by the Mann-Whitney U test or Kruskal-Wallis nonparametric test. Spearman rank correlation test was performed to evaluate the correlations between plasma levels of HA and circulating M2-like monocytes. The diagnostic efficiency of the individual markers and their combination was assessed by receiver operating curve (ROC) analysis. Logistic regression analysis was performed to obtain sensitivity/specificity of the optimal combination of circulating M2-like monocytes, HA, CEA, and CA 15-3. 2-sided p value < 0.05 was considered statistical significance in our study.

Results

The M2-like macrophages and HA were elevated in breast cancer tissues

We first used the CD204 as a biomarker for detecting M2-like macrophages in tissues of breast cancer and benign breast disease. The expressions of HA were also determined in the matched tissues. As shown in Fig.1, our result showed that CD204+ M2-like macrophages were accumulated in the stroma of breast cancer, which were higher than that in benign tissue. Furthermore, HA content was also increased in breast cancer tissue compared with benign tissue.

Circulating M2-like monocytes and plasma HA were increased in patients with breast cancer

Table 1 summarized the clinical characteristics of BC patients, patients with benign breast disease, and healthy controls. In the 81 BC patients investigated, invasive ductal carcinoma (80.2%) was the most frequently occurring cancer, followed by invasive lobular carcinoma (7.4%) and ductal carcinoma in situ (6.2%). Moreover, 42.2% of the benign disease was adenosis, followed by fibroadenoma (26.7%) and intraduct papilloma (17.8%). Furthermore, the distribution of age, the counts of WBC and monocytes in peripheral blood were not significantly different between the breast cancer, benign, and healthy groups.

In our study, plasma HA levels were significantly increased in breast cancer group (61.63 (52.04-81.50) ng/ml) compared with control group (49.13 (45.08-55.91) ng/ml), p < 0.001, Figure 3A). CD14+CD204+ monocytes in peripheral blood were recognized as the M2-like tumor-associated monocytes, which were determined by flow cytometry (Fig. 2). As expected, the percentages of circulating CD14+CD204+ monocytes from breast cancer patients (11.02 ± 2.74) were significantly higher than that from control groups (7.50 ± 1.73, p < 0.001) (Fig. 3B). As conventional biomarkers, the plasma levels of CEA and CA15-3 in BC patients were significantly higher than that in control groups (p = 0.027 and p = 0.003, respectively) (Fig. 3C and D). Therefore, our data showed that the frequency of circulating CD14+CD204+ M2-like monocytes and plasma HA were all significantly increased in breast cancer patients. Furthermore, there was a significant correlation between circulating M2-like monocytes and HA in breast cancer group (Spearman r = 0.404, p < 0.001) (Table 2 and Fig. 3E).

 Table 2 

Spearman rank correlation among four biomarkers for distinguishing control group and breast cancer group

Control groupBreast cancer group
HAM2#CEACA15-3HAM2#CEACA15-3
HA1.0001.000
M2#-0.0501.0000.404*1.000
CEA-0.023-0.0051.0000.1640.1581.000
CA15-3-0.084-0.1600.1331.000-0.0110.0440.2181.000

*: p < 0.05; #: circulating CD14+CD204+ M2-like monocytes

Circulating M2-like monocytes and plasma HA displays higher diagnostic values for breast cancer

Receiver operating characteristic (ROC) analysis was applied to appraise the diagnostic values of the four biomarkers individually and their combination. When distinguishing breast cancers from controls, our results showed that the AUC (area under the ROC curve) values of circulating CD14+CD204+ monocytes and plasma HA were 0.861 and 0.798, respectively, higher than that of CEA (0.598) and CA15-3 (0.631) (Table 3 and Fig. 4A). Furthermore, logistic regression models were carried out to further evaluate the relationship between the four markers and breast cancer. As shown in Table 4, univariate logistic regression analysis presented that higher levels of circulating CD14+CD204+ M2-like monocytes (OR = 2.116; 95% CI: 1.688-2.653; p < 0.01) and plasma HA (OR = 1.108; 95% CI: 1.065-1.152; p < 0.01) significantly predicted breast cancer. Correspondingly, CA15-3 (OR = 1.107; 95% CI: 1.039-1.179; p < 0.05) and CEA (OR = 1.373; 95% CI: 1.017-1.853; p < 0.05) also univariately predicted breast cancer versus controls. However, in multivariate logistic regression analysis, circulating M2-like monocytes, HA and CA15-3 but not CEA could significantly predict breast cancer.

 Figure 1 

The expressions of M2-like macrophages and HA in breast cancer and benign tissues. Immunohistochemical assays confirmed the content of CD204+ M2-like macrophages and HA in breast cancer and benign breast disease. (A) and (B) HA expression in benign and cancer tissues, respectively. (C) and (D) CD204 expression in benign and cancer tissues, respectively. Shown were representative images of tissues from patients with breast cancer (n = 5) and benign disease (n = 5).

J Cancer Image
 Table 3 

Diagnostic values of HA, circulating CD14+CD204+ M2-like monocytes, CEA, CA15-3, and their combination for breast cancer

MarkersAUC95% CISensitivity
90% specificity95% CI80% specificity95% CI
HA0.7980.733-0.86354.3%0.429-0.65460.5%0.490-0.863
CD14+CD204+0.8610.806-0.91771.6%0.605-0.81176.5%0.658-0.853
CEA0.5980.513-0.68214.8%0.079-0.24533.3%0.232-0.447
CA15-30.6310.548-0.71427.2%0.179-0.38239.5%0.288-0.510
CD14+CD204+ + HA0.8990.853-0.94674.1%0.631-0.83284.0%0.741-0.912
CEA + CA15-30.6390.557-0.72224.7%0.158-0.35532.1%0.222-0.434
Combination of all0.9080.863-0.95481.5%0.713-0.89386.4%0.770-0.930
 Figure 2 

Characterization of circulating CD14+CD204+ M2-like monocytes in healthy controls, benign patients, and breast cancer patients. FSCmid/SSCmid fractions include mainly monocytes, which were gated initially on CD14+ cells. Subsequently, CD204+ M2-like monocytes were gated on CD14+ monocytes and the percentages of CD14+CD204+ monocytes were determined.

J Cancer Image

In contrast to CEA and CA15-3, circulating CD14+CD204+ monocytes and HA possessed higher sensitivity (Table 3). At specificity of 80%, circulating CD14+CD204+ monocytes and HA produced a sensitivity of 76.5% and 60.5%, respectively, compared with CEA (33.3%) and CA15-3 (39.5%). Similarly, at 90% specificity, the sensitivities of circulating CD14+CD204+ monocytes (71.6%) and HA (54.3%) were higher than CEA (14.8%) and CA15-3 (27.2%). In this study, on the basis of the logistic regression model, combining CA15-3 and CEA for differentiating breast cancer from controls produced a ROC curve with AUC of 0.639 (95% CI: 0.557-0.722, p < 0.05), and the sensitivities were 32.1% at 80% specificity and 24.7% at 90% specificity. However, the AUC of the combination of circulating CD14+CD204+ monocytes and HA was 0.899 (95% CI: 0.853-0.946, p < 0.05), and the sensitivities reached 84.0% at 80% specificity and 74.1% at 90% specificity. Furthermore, as shown in Table 3 and Fig.4B, the AUC and sensitivity of the combination of circulating CD14+CD204+ monocytes and HA were similar to those of all biomarkers combination (AUC = 0.908, 95% CI: 0.863-0.954; 86.4% at 80% specificity and 81.5% at 90% specificity). Collectively, our results indicated that circulating CD14+CD204+ monocytes and HA might constitute a group of potential diagnostic marker for detection of breast cancer.

 Figure 3 

The levels of HA, circulating CD14+CD204+ M2-like monocytes, CEA, and CA15-3 in patients with breast cancer and control subjects. (A) The levels of HA. (B) The percentages of circulating CD14+CD204+ M2-like monocytes. (C) and (D) The concentration of CEA and CA15-3, respectively. (E) The correlation between the percentages of circulating CD14+CD204+ M2-like monocytes and the levels of plasma HA in BC patients.

J Cancer Image
 Figure 4 

ROC analysis for the levels of individual biomarkers and their combination of them for comparing breast cancer to controls. (A) HA, circulating CD14+CD204+ M2-like monocytes, CEA, and CA15-3; (B) The combination of circulating CD14+CD204+ M2-like monocytes and HA, the combination of CEA and CA15-3, and the combination of all biomarkers.

J Cancer Image

Correlation between the levels of all biomarkers and clinical parameters of breast cancer

The relationship of circulating CD14+CD204+ monocytes, HA, CA15-3, and CEA with patient characteristics were analyzed in this study. Our results showed that higher frequency of circulating CD14+CD204+ M2-like monocytes were significantly associated with TNM stage, histological differentiation, and lymph node metastasis (p < 0.05). Moreover, the frequency of CD14+CD204+ M2-like monocytes in ER negative groups was higher than that in ER positive group (p < 0.05). However, besides the positive correlation between HA and histological differentiation, there was no association between HA and other clinical parameters, such as histology type, ER, and so on (Table 5). As shown in Table 5, our study found no connection between CEA, CA15-3 and clinical parameters (p > 0.05).

 Table 4 

Results from logistic regression models

MarkersUnivariateMultivariate
OR95% CIOR95% CI
HA1.108*1.065-1.1521.092*1.042-1.144
CD14+CD204+2.116*1.688-2.6532.002*1.538-2.606
CEA1.373*1.017-1.8531.2780.833-1.963
CA15-31.107*1.039-1.1791.118*1.011-1.236

*: p < 0.05

Correlation between the levels of all biomarkers and clinical parameters of breast cancer

The relationship of circulating CD14+CD204+ monocytes, HA, CA15-3, and CEA with patient characteristics were analyzed in this study. Our results showed that higher frequency of circulating CD14+CD204+ M2-like monocytes were significantly associated with TNM stage, histological differentiation, and lymph node metastasis (p < 0.05). Moreover, the frequency of CD14+CD204+ M2-like monocytes in ER negative groups was higher than that in ER positive group (p < 0.05). However, besides the positive correlation between HA and histological differentiation, there was no association between HA and other clinical parameters, such as histology type, ER, and so on (Table 5). As shown in Table 5, our study found no connection between CEA, CA15-3 and clinical parameters (p > 0.05).

Correlation between the levels of all biomarkers and clinical parameters of breast cancer

The relationship of circulating CD14+CD204+ monocytes, HA, CA15-3, and CEA with patient characteristics were analyzed in this study. Our results showed that higher frequency of circulating CD14+CD204+ M2-like monocytes were significantly associated with TNM stage, histological differentiation, and lymph node metastasis (p < 0.05). Moreover, the frequency of CD14+CD204+ M2-like monocytes in ER negative groups was higher than that in ER positive group (p < 0.05). However, besides the positive correlation between HA and histological differentiation, there was no association between HA and other clinical parameters, such as histology type, ER, and so on (Table 5). As shown in Table 5, our study found no connection between CEA, CA15-3 and clinical parameters (p > 0.05).

In the present study, we analyzed the percentage of circulating CD14+CD204+ M2-like monocytes in blood samples, and the frequency of which was significantly elevated in BC patients than that in control group. Similarly, plasma HA concentration detected in BC patients was also higher than control group. Notably, we found that the level of circulating CD14+CD204+ M2-like monocytes was appeared to be positively correlated with plasma HA concentration in breast cancer. In contrast, there was no significant correlation between circulating M2-like monocytes and HA in control group. As indicated before, HA was an essential factor that induced the formation of M2-like phenotype besides other factors (e.g., IL-4, IL-13, M-CSF, and so on) in the tumor microenvironment [7, 12, 13]. Thus, our results suggested that tumor-derived HA and M2-like monocytes in peripheral blood could be used as potential biomarkers in diagnosis of breast cancer.

It is generally accepted that no single tumor biomarker will supply all necessary information for optimal diagnosis of cancer. The current tendency is to identify a multiple of biomarkers that can be used in combination to increase the diagnostic values. Up to now, very few tumor markers were clinically used for early discovery and diagnosis of breast cancer. The currently used tumor biomarkers CEA and CA15-3 were shown with low sensitivity in breast cancer that hindered its clinical application [3, 23, 24]. In agreement with previous studies, CA15-3 and CEA had relatively low sensitivity in breast cancer screening in our study. Nevertheless, our results demonstrated that circulating CD14+CD204+ M2-like monocytes and HA displayed higher AUC and sensitivity at specificity of 80.0% and 90.0%. Moreover, when combining circulating M2-like monocytes and HA with frequently-used markers to explore the diagnostic value of combination, we found that circulating M2-like monocytes and HA increased the diagnostic value with superior sensitivity and specificity for breast cancer diagnosis. Therefore, combination of circulating CD14+CD204+ M2-like monocytes and HA showed higher potential values than that of CEA and CA15-3.

We also found that higher levels of circulating CD14+CD204+ M2-like monocytes were significantly correlated with lymph node metastasis and histological differentiation. Other studies indicated that circulating M2-like monocytes play an important role in the metastasis and growth of solid tumors [18, 25]. However, in this study, we found no significant association between plasma HA levels and lymph node metastasis and histological differentiation. The explanation may be that the measurement of plasma HA concentrations in our study is total HA. Previous study suggested that ECM degradation gives rise to the elevation of HA fragments which facilitate the tumor cell dissemination and metastasis [26]. In addition, our results revealed that the frequency of CD14+CD204+ M2-like monocytes was increased in ER negative patients. Former studies showed that ER regulated the growth and differentiation of tumor cells and was positively correlated with the prognosis of breast cancer patients [27]. However, there was no relationship between CA15-3, CEA, and clinical parameters. Therefore, in contrast to CEA and CA15-3, circulating CD14+CD204+ M2-like monocytes have the advantageous value of surveilling the progression of breast cancer.

In conclusion, this study indicated that there was a positive correlation between circulating CD14+CD204+ M2-like monocytes and HA in breast cancer, and the combination of them may represent a potential biomarker to screen breast cancer. However, our studies were carried out only in CD14+ monocytes and the assay of plasma HA was limited to total HA with small sample size. Therefore, further detailed analysis with large sample size is needed to verify our study.

 Table 5 

Correlation between the levels of HA, circulating CD14+CD204+ M2-like monocytes, CEA, and CA15-3 and clinicopathological characteristics of breast cancer patients

CharacteristicsNO.HA
Median (P25-P75)
pCD14+CD204+ (%)
(Mean ± SD)
pCEA
Median (P25-P75)
pCA15-3
Median (P25-P75)
p
Age(years)
≤50
>50
38
43
55.22 (51.10-78.50)
66.98 (58.06-86.88)
0.14810.53 ± 3.02
11.46 ± 2.42
0.1301.52 (0.98-2.21)
1.72 (1.16-2.41)
0.23713.60(10.16-17.69)
10.21 (8.10-15.00)
0.071
Tumor size(cm)
≤2.0
>2.0
34
47
65.05 (53.41-80.72)
61.22 (50.74-82.78)
0.52810.75 ± 2.42
11.22 ± 2.96
0.4481.45 (1.01-1.88)
1.61 (1.15-2.50)
0.08911.20 (8.37-15.24)
12.15 (8.14-17.14)
0.639
TNM stage
0-I2958.61(52.31-73.38)9.70 ± 2.171.35(0.94-2.10)10.30(8.33-14.47)
II4161.63(51.22-87.61)0.47211.35 ± 2.690.000*1.76(1.38-2.41)0.11312.87(9.35-17.94)0.267
III or higher1170.36(50.60-154.7)13.26 ± 2.641.49(0.99-4.83)12.63(6.72-17.40)
Histology type
Ductal
Others
54
27
61.43 (53.34-80.86)
64.19 (50.08-93.13)
0.41110.85 ± 2.64
11.36 ± 2.96
0.4321.60 (1.11-2.21)
1.49 (1.03-2.47)
0.91212.04 (8.21-17.34)
10.38 (8.43-14.88)
0.465
Histology differentiation
Well-Moderate
Poor
38
43
55.22 (50.66-71.21)
72.89 (56.00-105.4)
0.007*9.39 ± 2.14
12.46 ± 2.40
0.000*1.54 (1.01-2.50)
1.59 (1.10-2.02)
0.91311.56 (8.53-15.75)
11.50 (8.10-17.14)
0.962
N status
N04361.22 (52.31-78.30)0.6239.82 ± 2.430.000*1.54 (1.08-2.39)0.23310.92 (8.07-15.23)0.075
N1-33863.21 (51.07-87.98)12.38 ± 2.451.66 (1.13-2.36)13.36 (8.84-18.53)
ER
Positive
Negative
53
28
59.65 (52.31-74.89)
71.98 (51.07-110.7)
0.2079.94 ± 2.32
13.07 ± 2.28
0.000*1.70 (1.10-2.42)
1.50 (1.04-1.99)
0.41011.50 (8.46-16.34)
11.41 (7.16-16.94)
0.792
PR
Positive
Negative
48
33
61.17 (51.46-77.84)
64.19 (52.20-95.73)
0.65110.57 ± 2.71
11.68 ± 2.70
0.0741.63 (1.07-2.37)
1.54 (1.08-2.49)
0.97711.49 (8.50-15.87)
12.05 (7.19-17.61)
0.916
HER2
Positive
Negative
22
59
56.11 (50.09-73.82)
64.19 (53.76-86.88)
0.11011.33 ± 3.12
10.91 ± 2.61
0.5331.31 (1.01-2.44)
1.61 (1.11-2.38)
0.58510.65 (7.76-16.63)
11.64 (8.48-16.27)
0.381
Ki67
<20%
≥20%
36
45
65.39 (52.95-77.30)
59.65 (50.78-84.83)
0.54010.48 ± 2.44
11.46 ± 2.92
0.1111.54 (1.07-2.42)
1.72 (1.07-2.24)
0.97412.05 (9.64-16.29)
11.50 (4.07-16.47)
0.272

*: p < 0.05. ER: Estrogen receptor, PR: Progesterone receptor, HER2: Human epidermal factor 2.

Acknowledgements

This work was supported by the National Natural Science Foundation of China (81272479, 81402419, 81572821, 81502490, 81502491, 81672843), the Natural Science Foundation of Shanghai Municipality (14YF1412200), the Program of Shanghai Leading Talents (2013-038), and the Shanghai Shen-Kang Hospital Development Center (SHDC22014004).

Authors' contributions

Boke Zhang, Manlin Cao, Guoliang Zhang, and Feng Gao contributed to the conception, design, and final approval of the submitted version. Yiqing He, Yiwen Liu, Jing Xu, and Jiajie Hu performed the research and collected data. Boke Zhang, Cuixia Yang, and Yan Du analyzed the data. Boke Zhang, Guoliang Zhang, Feng Gao wrote and revised the manuscript. All authors read and approved the final manuscript.

Competing Interests

The authors have declared that no competing interest exists.

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Author contact

Corresponding address Corresponding author: Feng Gao, Department of Molecular Biology and Clinical Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, PR China. Tel: +86-21-64369181; Fax: +86-21-63701361; E-mail: gao3507com


Received 2017-3-23
Accepted 2017-8-28
Published 2017-9-29


Citation styles

APA
Zhang, B., Cao, M., He, Y., Liu, Y., Zhang, G., Yang, C., Du, Y., Xu, J., Hu, J., Gao, F. (2017). Combination of plasma HA and circulating M2-like monocytes may serve as a diagnostic marker for breast cancer. Journal of Cancer, 8(17), 3522-3530. https://doi.org/10.7150/jca.20227.

ACS
Zhang, B.; Cao, M.; He, Y.; Liu, Y.; Zhang, G.; Yang, C.; Du, Y.; Xu, J.; Hu, J.; Gao, F. Combination of plasma HA and circulating M2-like monocytes may serve as a diagnostic marker for breast cancer. J. Cancer 2017, 8 (17), 3522-3530. DOI: 10.7150/jca.20227.

NLM
Zhang B, Cao M, He Y, Liu Y, Zhang G, Yang C, Du Y, Xu J, Hu J, Gao F. Combination of plasma HA and circulating M2-like monocytes may serve as a diagnostic marker for breast cancer. J Cancer 2017; 8(17):3522-3530. doi:10.7150/jca.20227. https://www.jcancer.org/v08p3522.htm

CSE
Zhang B, Cao M, He Y, Liu Y, Zhang G, Yang C, Du Y, Xu J, Hu J, Gao F. 2017. Combination of plasma HA and circulating M2-like monocytes may serve as a diagnostic marker for breast cancer. J Cancer. 8(17):3522-3530.

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