腫瘤相關巨噬細胞在子宮內(nèi)膜癌雌激素敏感性中的作用及機制研究
[Abstract]:The role and mechanism of tumor-associated macrophages (TAMs) in regulating estrogen sensitivity in type I endometrial carcinoma Endometrial carcinoma (EC) is one of the most common female reproductive malignancies, 70% - 80% of which are type I endometrioid adenocarcinoma. It is generally believed that the occurrence of TAMs is associated with estrogen without progesterone antagonism for a long time. Our previous study found that serum estrogen levels in patients with type I endometrial carcinoma and its precancerous lesions were not higher than those in healthy women of the same age, suggesting that there may be other mechanisms involved in the development of type I endometrial carcinoma. A large number of epidemiological studies have found that type I endometrial carcinoma is closely related to insulin resistance, and chronic inflammation is one of the important clinical manifestations of the latter. It is suggested that macrophage infiltration may play an important role in the genesis and development of type I endometrial carcinoma, but its role and mechanism need to be further studied.Monocytes/macrophages in human body can be induced to activate into different phenotypes: M1 and M2. At present, M2 macrophages are considered as infiltrating macrophages in most tumors, also known as macrophages. Tumor-associated macrophages (TAMs). Inflammatory reactions predominantly with TAMs infiltration are associated with poor prognosis in a variety of tumors. Macrophage infiltration can regulate the expression of hormone receptors in tumor cells. In prostate cancer, macrophage infiltration can up-regulate the expression of androgen receptors and promote the effect of androgen on prostate. In breast cancer, chronic inflammation caused by obesity can activate estrogen receptor in breast cancer. Therefore, we speculate that local TAMs infiltration in endometrial lesions may promote the occurrence and development of cancer by regulating estrogen receptor and increasing local sensitivity to estrogen. The relationship between cell infiltration and endometrial carcinoma and precancerous lesions, and the regulation of macrophages on estrogen receptor and their sensitivity to estrogen in endometrial carcinoma were studied to verify the hypothesis and further analyze the possible mechanism. Analysis of serum estrogen level; Part II: Correlation between macrophage infiltration and type I endometrial carcinoma and endometrial hyperplasia; Part III: TAMs regulate estrogen sensitivity of type I endometrial carcinoma cells through ERalpha; Part IV: TAMs regulate ERalpha expression of type I endometrial carcinoma cells through IL-17. Objective: To detect the correlation between serum estrogen levels and the occurrence and development of type I endometrial carcinoma. Methods: 1. To collect the general information and serum estradiol (E2) of patients with normal and proliferative endometrium from September 2011 to December 2013. Data of serum estrogen levels were collected in 401 cases, including 39 cases of control group, 69 cases of hyperplasia disorder, 168 cases of simple hyperplasia, 67 cases of complex hyperplasia, 33 cases of atypical hyperplasia, 25 cases of type I endometrial carcinoma. E-way ANOVA analysis, with P = 0.05 as the significant statistical difference standard. 2. Collected from September 2011 to December 2013, normal endometrial and endometrial cancer patients serum, including 34 cases of control group, 34 cases of type I endometrial cancer, a total of 68 cases. The same age of normal and endometrial cancer patients matched comparison. ELISA detection of serum estrogen levels. Results: 1. The clinical data showed that the distribution of estradiol levels in each group were 95.00 (+ 68.81 ng/L), 151.8 (+ 163.2 ng/L), 156.4 (+ 178.8 ng/L), 138.4 (+ 330.0 ng/L), 125.5 (+ 156.7 ng/L) and 36.52 (+ 45.35 ng/L), respectively. The results were not statistically significant (P 0.05). 05). Patients were divided into 25-40 years old and 40-55 years old. The distribution of estradiol in each group was 107.1 (+ 70.73 ng/L), 140.3 (+ 165.2 ng/L), 122.1 (+ 129.6 ng/L), 76.59 (+ 59.86 ng/L) and 120.1 (+ 179.2 ng/L) in 25-40 years old, respectively. 63.36 ng/L, 161.1+154.5 ng/L, 164.0+20.6 ng/L, 148.1+152.6 ng/L, 148.3+122.5 ng/L and 76.86+68.13 ng/L. There was no significant difference in the distribution of estradiol levels among the same age groups (P 0.05). 2. Elisa results showed that estradiol levels in the control group and the type I endometrial cancer group were matched by the same age: P = 0.8338, no significant difference. Conclusion: The serum estrogen level of patients with type I endometrial carcinoma and precancerous lesions is not higher than that of normal endometrial women, suggesting that there may be other mechanisms involved in the occurrence and development of endometrial carcinoma. Methods: 140 normal and proliferative endometrial tissues were collected, including 20 cases of proliferative endometrium, 20 cases of simple hyperplasia, 20 cases of complex hyperplasia, 30 cases of atypical hyperplasia and 30 cases of type I endometrial carcinoma. The number of CD68 (+) cells in each stage was counted and the infiltration of CD68 (+) macrophages in endometrium was evaluated. Graph pad prism 5.0 was used for one-way ANOVA analysis. P = 0.05 was used as the standard of significant statistical difference. Results: 1. CD68 was expressed in the cytoplasm and membrane of macrophages. 2. The number of CD68 (+) cells in each group was separately analyzed. Proliferative phase: 6.641 + 5.463: Secretory phase: 13.82 + 10.36; Simple hyperplasia: 20.45 + 10.17; Complex hyperplasia: 35.70 + 14.73; Atypical hyperplasia: 41.98 + 15.74; Type I endometrial carcinoma: 57.80 + 25.72; Compared with type I endometrial carcinoma, there were all P 0.001, CD68 (+) cells and sons. With the development of endometrial hyperplasia, the infiltration sites of macrophages changed from perivascular to mesenchymal to glandular epithelial. 4. With the progress of endometrial hyperplasia, the morphology of macrophages gradually matured. Conclusion: The number, location and morphology of CD68 (+) macrophages infiltration in endometrium may be related to the occurrence of endometrial cancer. Part III: TAMs regulate estrogen sensitivity of type I endometrial carcinoma cells through ERalpha. Objective: To study the role of TAMs in promoting the proliferation of type I endometrial carcinoma cells and the sensitivity of endometrial carcinoma cells to estradiol, and to further analyze the possible mechanisms. Membrane cancer cell lines Ishikawa and HEC-1-A were used as research objects; monocyte THP-1 was cultured and induced into M2 macrophages, namely TAMs; endometrial cancer cells were co-cultured with M2 THP-1 or cultured on M2 THP-1 conditioned medium. CCK-8 was used to detect the proliferation of endometrial cancer cells before and after co-culture, and the sensitivity to physiological dose (10-9M) E2. The perceptual changes were compared with those after overexpression of ER-alpha or ICI. One-way ANOVA analysis was performed with Graph pad prism 5.0 and P=0.05 as the significant statistical difference standard. The expression of ER-alpha in endometrial carcinoma cells co-cultured with M2 THP-1 was detected by Real-time PCR and Western Blot. Results: 1. Human M 2 THP-1 macrophages were successfully induced and activated, and the morphological changes were obvious. The phenotypes of CD68, CD163, CD204 and CD206 were significantly increased. 2. M 2 THP-1 co-cultured with Ishikawa or HEC-1-A, the proliferation of endometrial cancer cells was promoted. Physiological dose of E2 also up-regulated the proliferation of the two cell lines; this phenomenon can be inhibited by estrogen receptor inhibitor ICI. 3. M2 THP-1 conditioned medium (CM) can promote the proliferation of Ishikawa and HEC-1-A cells in a time-dependent manner, and up-regulate the proliferation of endometrial cancer cells induced by physiological dose of estrogen, the same as its proliferation-promoting effect. Conditioned medium (CM) inhibited by ICI could up-regulate the expression of estrogen receptor alpha in a time-dependent manner, but had no significant effect on estrogen receptor beta; CM could up-regulate the expression of cyclin Dl in a time-dependent manner; 5. Conclusion: TAMs can promote the proliferation and estrogen sensitivity of endometrial carcinoma cells Ishikawa and HEC-1-A. This effect may be achieved by up-regulating estrogen receptor alpha in endometrial carcinoma cells. Part IV: TAMs regulate the expression of ERalpha in type I endometrial carcinoma cells through IL-17. Objective: To screen TAMs may promote the proliferation of endometrial carcinoma cells. Methods: M2 THP-1 and HEC-1-A cells were co-cultured with Transwell, and RNA of M2 THP-1 cells was extracted to screen stable inflammatory factors by Real-time PCR. Graph pad prism 5.0 was used for one-way ANOVA analysis, and P = 0.05 was used as the significant statistical difference standard; Real-time PCR and Western blot were used to verify the regulation of the inflammatory factors on the expression of ERalpha in HEC-1-A; Western blot was used to verify the inflammation. Results: 1. After co-culture with HEC-1-A, the expression of inflammatory factors IL-10 and IL-17 in M 2 THP-1 cells was significantly increased; 2. Both IL-10 and IL-17 could up-regulate the proliferation of HEC-1-A cells, and the effect of IL-17 was stronger. After treatment with IL-17 or E2, the expression of HEC-1-A was up-regulated, and the effect of IL-17 was stronger. IL-17 was further screened out as the research object. 4. After treatment with IL-17 and E2, the activation of p-AKT signaling pathway in HEC-1-A cells was significantly enhanced, which was similar to that of HEC-1-A cells transfected with ER-a and then treated with E2. These results suggest that: 1. There is no significant correlation between serum estrogen levels and the progression of type I endometrial hyperplasia, and estrogen may have other mechanisms to promote the proliferation of endometrial cancer cells. 2. Macrophage infiltration is positively correlated with the development of type I endometrial hyperplasia. Chronic inflammation may play an important role in the development of type I endometrial carcinoma. 3. Tumor-associated macrophages enhance the proliferation of type I endometrial carcinoma cells by up-regulating the expression of estrogen receptor alpha. The regulation of sex inflammation on estrogen sensitivity may be an important reason for the occurrence and development of type I endometrial carcinoma. This study suggests that high estrogen levels without progesterone antagonism may not be the only way estrogen promotes the development of type I endometrial carcinoma. Increased estrogen sensitivity in the endometrium regulated by chronic inflammation may complement the mechanism of endometrial carcinoma. Targeted anti-inflammatory therapy may prevent type I endometrial carcinoma and New ideas are provided for the occurrence of precancerous lesions.
【學位授予單位】:復旦大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:R737.33
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