Increased Dickkopf-1 expression in breast cancer bone metastases

The aim of this study was to determine whether Dickkopf-1 (Dkk-1) expression in breast cancer was associated with bone metastases. We first analysed Dkk-1 expression by human breast cancer cell lines that induce osteolytic or osteoblastic lesions in animals. Dickkopf-1 levels were then measured in the bone marrow aspirates of hind limbs from eight NMRI mice inoculated with breast cancer cells that induced bone metastases and 11 age-matched non-inoculated control animals. Finally, Dkk-1 was measured in the serum of 17 women with breast cancer in complete remission, 19 women with breast cancer and bone metastases, 16 women with breast cancer and metastases at non-bone sites and 16 healthy women. Only breast cancer cells that induce osteolytic lesions in animals produced Dkk-1. There was a six-fold increase in Dkk-1 levels in the bone marrow from animals inoculated with MDA-B02 cells when compared with that of control non-inoculated animals (P=0.003). Median Dkk-1 levels in the serum of patients with breast cancer and bone metastases were significantly higher than levels of patients in complete remission (P=0.016), patients with breast cancer having metastases at non-bone sites (P<0.0001) and healthy women (P=0.047), although there was a large overlap in individual levels between the different groups. In conclusion, Dkk-1 is secreted by osteolytic human breast cancer cells lines and increased circulating levels are associated with the presence of bone metastases in patients with breast cancer. Measurements of circulating Dkk-1 levels may be useful for the clinical investigation of patients with breast cancer and bone metastases.     

Changes of bone turnover markers and serum PTH after night or morning administration of zoledronic acid in breast cancer patients with bone metastases

Persistent circadian rhythm of bone turnover in bone metastatic breast cancer suggests greater skeletal retention of bisphosphonates if administered in the night. We assessed differential effects of night vs morning administration of zoledronic acid (ZA) on bone turnover. Forty-four breast cancer patients with bone metastases were randomised to receive intravenous ZA (4 mg) at 1100 or 2300 hours every 28 days for four times. Urinary concentration N-telopeptide of type-I collagen (NTX) and deoxypyridinolines, and serum C-telopeptide of type-I collagen (CTX), bone alkaline phosphatase (ALP), osteocalcin and Parathyroid hormone (PTH) was measured in the morning at baseline and after 4, 7, 14, 28, 56 and 84 days. Urinary ZA concentration was also measured. Zoledronic acid caused significant decreases of NTX and CTX (P<0.001), without any difference in percent changes between night and morning arms. Bone ALP and osteocalcin were also significantly affected by ZA (P=0.001), without any difference between arms. Parathyroid hormone significantly increased in both the arms; PTH increase was lower in the night arm (P=0.001). From the second administration onwards, urinary ZA level was significantly higher in the night arm (P<0.01). Administration of ZA at two opposite phases of the circadian cycle causes similar changes of bone-turnover marker levels, but has differential effects on the level of serum PTH.     

Elevated serum periostin levels in patients with bone metastases from breast but not lung cancer

Periostin is a recently identified gene that is preferentially expressed in periosteum, indicating a potential role in bone formation and maintenance of structure. We independently identified and isolated periostin from cancer tissue, using the palindromic PCR-driven cDNA Differential Display technique. For the present work, we developed a novel sandwich chemiluminescence assay to detect serum periostin level using newly developed monoclonal and polyclonal antibodies. We investigated serum periostin levels in breast cancer and small cell lung cancer patients, especially in patients with bone metastasis. The study included 58 breast cancer and 44 small cell lung cancer patients. Serum periostin levels were elevated in breast cancer patients presenting with bone metastases (92.0 ± 28.6 ng/ml) compared to similar breast cancer patients without evidence of bone metastasis (55.0 ± 16.6 ng/ml, p = 0.04). No correlation was found between the serum periostin level and any other prognostic factors, such as clinical stage and lymph node metastasis in breast cancer. Serum periostin levels thus appear to serve as a marker of bone metastasis from breast cancer. In contrast, serum periostin levels were similar in samples from patients with small cell lung cancer who did or did not have bone metastasis. However, increasing T-stage and N-stage of patients with small cell lung cancer were correlated with higher periostin levels (T4, 126.5 ± 29.7 ng/ml v.s. T2, 64.9 ± 16.1 ng/ml, p = 0.03; and T4 v.s. T1, 36.3 ± 7.5 ng/ml, p = 0.01; N3, 108.7 ± 17.3 ng/ml v.s. N2, 49.7 ± 10.9 ng/ml, p = 0.01). Periostin has a substantial homology with the insect cell adhesion molecule, fasciclin I. Thus, expression of periostin may facilitate tumor cell adhesion to the bone surface. In fact, we found by in situ RNA hybridization, that the periostin gene was highly expressed in the stromal cells immediately surrounding the tumor, but not within the breast cancer cells themselves.     

Lysophosphatidic acid‐induced expression of periostin in stromal cells: Prognoistic relevance of periostin expression in epithelial ovarian cancer

Lysophosphatidic acid (LPA) is a bioactive lipid crucial for the initiation and progression of ovarian cancer. Identification of LPA‐induced biomarkers is necessary for predicting prognosis of ovarian cancer patients. Here we report periostin, an extracellular matrix protein, as an LPA‐induced protein in stromal cells and as a prognostic marker in patients with epithelial ovarian cancer (EOC). In human EOC tissues, periostin was mainly expressed in cancer‐associated stromal fibroblasts, but not in cancer cells. The expression levels of periostin highly correlated with poor survival and tumor recurrence of ovarian cancer patients. Treatment of human adipose tissue‐derived stromal cells with LPA or conditioned media from human ovarian adenocarcinoma cell lines, such as SK‐OV‐3 and OVCAR‐3, induced expression of periostin. The periostin expression induced by cancer‐conditioned media was abrogated by silencing of the LPA receptor 1 expression using small hairpin RNA lentivirus. Recombinant periostin stimulated adhesion and invasion of SK‐OV‐3 human ovarian adenocarcinoma cells and induced expression of matrix metalloprotease‐2 in the cancer cells. These results suggest that LPA is associated with the expression of periostin in cancer‐associated fibroblasts of EOC.     

唑来膦酸钠对绝经后乳腺癌患者骨代谢影响结果分析

目的：通过观察唑来膦酸钠对绝经后乳腺癌患者骨代谢影响,探讨唑来膦酸钠在早期预防乳腺癌患者发生骨代谢障碍及抑制骨转移中的作用。方法：85例绝经后乳腺癌患者均手术治疗,且术后常规行6个疗程的化疗,无骨转移病例。对照组：28例化疗后接受中药治疗;来曲唑组：30例化疗后继续服用来曲唑2．5mg／d;来曲唑＋唑来膦酸钠组：27例患者化疗后除服用来曲唑2．5mg／d外,使用唑来膦酸钠注射液4mg＋生理盐水100ml,静脉滴注15min,每4周为1个疗程。6个月后应用双能x线骨密度仪对三组乳癌患者腰椎、股骨近端骨密度（BMD）进行测定,用SPETCT行全身核素骨显像检查,使用全自动生化仪器测定血清碱性磷酸酶（ALP）、血钙（Ca）、血磷（P）等生化指标,用免疫组化方法测定雌激素（E2）,对三组患者治疗前后各项指标分析比较。结果：治疗后来曲唑组与对照组病人的BMD、E2、血清Ca、P指标比较,均明显降低（P〈0．05）、ALP明显上高（P〈0．05）;来曲唑＋唑来膦酸钠组与来曲唑组比较,BMD、血清Ca、P指标明显升高（P〈0．05）,ALP降低（P〈0．05）、E2未见明显变化（P〉0．05）;来曲唑＋唑来膦酸钠与对照组比较,ALP、E2指标明显降低（P〈0．05）,BMD明显升高（P〈0．05）,血清Ca、P未见明显变化（P〉0．05）。与对照组比较唑来膦酸钠组的骨转移发生率明显降低（P〈0．05）。结论：唑来膦酸钠对接受来曲唑治疗引起的骨代谢障碍早期防治疗效明显,且对骨转移发生有明显抑制作用。     

145例乳腺癌骨转移临床病理分析

目的：探讨乳腺癌骨转移的相关因素及处理对策。方法：本文对１９５４年１月～１９７７年１２月我院收治的２８０３例原发乳腺癌术后发生骨转移的１４５例患者临床资料进行回顾性分析。结果：乳腺癌术后骨转移发生率５．１％,骨转移部位分布较广泛,多数出现在脊柱,术后前５年发生率占７６．４％,腋淋巴结阳性患者较阴性患者较早发生转移。出现转移后经治疗患者较未治疗患者生存期有显著性差异。结论：乳腺癌术后骨转移出现时间与其分布有其规律,综合治疗后乳腺癌患者可延缓出现转移的时间。出现骨转移后,积极治疗,可达到延长生存期改善生存质量的目的。     

Effects of oral UFT combined with or without zoledronic acid on bone metastasis in the 4T1/luc mouse breast cancer

Bone metastasis is one of the major causes of increased morbidity and eventual mortality in breast cancer patients. Therefore, intervention of bone metastases is one of the important targets in the management of breast cancer. In the present study, we examined the effects of the orally administrable chemotherapeutic agent UFT (a combination of tegafur and uracil at a molar ratio of 1:4) on bone metastases using an animal model of the 4T1/luc mouse breast cancer. The 4T1/luc cells developed spontaneous metastases to bone following orthotopic cell inoculation. Oral daily administration of UFT (20 mg/kg/day) significantly reduced the orthotopic tumor burden; however, the lower dose (15 mg/kg/day) did not. In contrast, histologic examination showed that both doses of UFT significantly suppressed bone metastases in a dose-dependent manner. Since clinical studies have demonstrated that bisphosphonates (BPs), specific inhibitors of osteoclastic bone resorption, are beneficial for breast cancer patients with bone metastases, we next examined the effects of UFT combined with the BP zoledronic acid (ZOL) on established bone metastases. The combination of UFT (20 mg/kg/day) with ZOL (250 microg/kg) caused an enhanced reduction of bone metastases compared with UFT alone. In vitro studies showed that 5-fluorouracil (5-FU), an active metabolite of UFT, and ZOL increased apoptosis in 4T1/luc cells and inhibited osteoclast-like cell formation in an additive fashion. Our results suggest that oral UFT is an effective chemotherapeutic agent for advanced breast cancer accompanying bone metastases and that the combination with BP increases its benefits for bone metastases.     

唑来膦酸在早期乳腺癌中的抗肿瘤研究进展

早期乳腺癌在接受辅助治疗（化疗和内分泌治疗）时均会对患者骨密度造成不良影响,加速骨丢失。第三代双磷酸盐—唑来膦酸其作用机制是抑制破骨细胞介导的骨质重吸收,主要用于恶性肿瘤骨转移引起的高钙血症。唑来膦酸-弗隆辅助协同试验（ZO-FAST）显示唑来膦酸在早期乳腺癌辅助内分泌治疗同时使用不仅可有效防止骨质丢失,还具有明显降低肿瘤复发的作用。奥地利乳腺癌和结直肠癌研究小组-12（ABCSG-12）试验结果同样表明唑来膦酸在联合内分泌治疗时可显著降低患者的疾病进展风险和死亡风险。除此之外,临床前实验和临床试验也证实唑来膦酸联合化疗也具有协同的抗肿瘤作用。唑来膦酸联合新辅助化疗降低复发（AZURE试验）,对于绝经5年以上和年龄>60岁的人群,辅助化疗加唑来膦酸显著减低疾病进展和死亡风险。在ABCSG-12试验中同样发现对于年龄>40岁的患者,唑来膦酸可明显降低复发风险,而年龄≤40岁患者却未在唑来膦酸的治疗中获益。这些结果表明唑来膦酸在雌激素低水平（自然的或治疗后结果）的早期乳腺癌患者中易于发挥抗肿瘤作用。目前对于唑来膦酸的最佳剂量和持续时间尚有待于进一步的研究确认,相信随着相关临床试验结果的公布可以提供更充足的证据来支持唑来膦酸在早期乳腺癌的使用。      

唑来膦酸钠对绝经后乳腺癌患者骨代谢影响结果分析

目的:通过观察唑来膦酸钠对绝经后乳腺癌患者骨代谢影响,探讨唑来膦酸钠在早期预防乳腺癌患者发生骨代谢障碍及抑制骨转移中的作用。方法:85例绝经后乳腺癌患者均手术治疗,且术后常规行6个疗程的化疗,无骨转移病例。对照组:28例化疗后接受中药治疗;来曲唑组:30例化疗后继续服用来曲唑2.5mg/d;来曲唑+唑来膦酸钠组:27例患者化疗后除服用来曲唑2.5mg/d外,使用唑来膦酸钠注射液4mg+生理盐水100ml,静脉滴注15min,每4周为1个疗程。6个月后应用双能X线骨密度仪对三组乳癌患者腰椎、股骨近端骨密度(BMD)进行测定,用SPETCT行全身核素骨显像检查,使用全自动生化仪器测定血清碱性磷酸酶(ALP)、血钙(Ca)、血磷(P)等生化指标,用免疫组化方法测定雌激素(E2),对三组患者治疗前后各项指标分析比较。结果:治疗后来曲唑组与对照组病人的BMD、E2、血清Ca、P指标比较,均明显降低(P<0.05)、ALP明显上高(P<0.05);来曲唑+唑来膦酸钠组与来曲唑组比较,BMD、血清Ca、P指标明显升高(P<0.05),ALP降低(P<0.05)、E2未见明显变化(P>0.05);来曲唑+唑来膦酸钠与对照组比较,ALP、E2指标明显降低(P<0.05),BMD明显升高(P<0.05),血清Ca、P未见明显变化(P>0.05)。与对照组比较唑来膦酸钠组的骨转移发生率明显降低(P<0.05)。结论:唑来膦酸钠对接受来曲唑治疗引起的骨代谢障碍早期防治疗效明显,且对骨转移发生有明显抑制作用。     

OPG‐Fc inhibits ovariectomy‐induced growth of disseminated breast cancer cells in bone

Dormant disseminated tumour cells can be detected in the bone marrow of breast cancer patients several years after resection of the primary tumour. The majority of these patients will remain asymptomatic, however, ～15% will go on to develop overt bone metastases and this condition is currently incurable. The reason why these dormant cells are stimulated to proliferate and form bone tumours in some patients and not others remains to be elucidated. We have recently shown that in an in vivo model, increasing bone turnover by ovariectomy stimulated proliferation of disseminated tumour cells, resulting in formation of bone metastasis. We now show for the first time that osteoclast mediated mechanisms induce growth of tumours from dormant MDA‐MB‐231 cells disseminated in the bone. We also show that disruption of RANK–RANKL interactions following administration of OPG‐Fc inhibits growth of these dormant tumour cells in vivo. Our data support early intervention with anti‐resorptive therapy in a low‐oestrogen environment to prevent development of bone metastases.     

唑来膦酸治疗恶性肿瘤骨转移研究进展

骨骼是恶性肿瘤常见的转移部位之一,并可带来一系列的并发症,如骨痛、病理性骨折、脊髓压迫症和高钙血症等.二膦酸盐是治疗骨转移最常见的药物,唑来膦酸作为新一代含氮二磷酸盐类药物,是至今已发现的药物中抗骨吸收能力最强的.本文综述了唑来膦酸治疗恶性肿瘤骨转移的研究进展.     

Retrospective analysis of antitumor effects of zoledronic acid in breast cancer patients with bone-only metastases

BACKGROUND:

Bisphosphonates have been used successfully in the treatment of hypercalcemia and to reduce skeletal complications of bone metastasis, but have not been shown to prevent bone metastasis or to prolong survival time in metastatic breast cancer patients. The aim of this study was to determine whether the progression‐free survival (PFS) and overall survival (OS) of patients with bone‐only breast cancer metastasis differed based on whether patients received zoledronic acid, pamidronate, or no bisphosphonate upon diagnosis of their metastases.

PATIENTS AND METHODS:

We retrospectively identified 314 patients diagnosed with bone‐only metastasis at the time of initial staging or who developed bone metastasis as the first recurrence site during follow‐up from January 1, 1997 to December 31, 2008, at The MD Anderson Cancer Center. Univariate and multivariate Cox hazards models were used to assess the effects of each treatment on PFS and OS.

RESULTS:

Patients who had more than 1 bone metastasis and Eastern Cooperative Oncology Group (ECOG) performance status of 2 and 3 were more likely to receive zoledronic acid in this analysis. Compared with no bisphosphonate use, the use of zoledronic acid was not significantly associated with longer PFS (hazard ratio [HR] = 0.72, P = .058 in univariate analysis, and HR = 0.80, P = .235 in multivariate analysis) nor with longer OS (HR = 1.04, P = .863 in univariate analysis and HR = 1.34, P = .192 in multivariate analysis).

CONCLUSION:

Our study demonstrates that for patients with bone‐only metastases, zoledronic acid did not prolong PFS or OS. In patients with bone‐only metastasis, we could not demonstrate antitumor effects of zoledronic acid. Cancer 2012. © 2011 American Cancer Society.     

Novel highly specific anti‐periostin antibodies uncover the functional importance of the fascilin 1‐1 domain and highlight preferential expression of periostin in aggressive breast cancer

Periostin (POSTN), a secreted homodimeric protein that binds integrins αvβ3, αvβ5, and α6β4, was originally found to be expressed in fetal tissues and in the adult upon injury particularly bone fractures due to its role in remodelling and repair. Recently it was found to be over‐expressed in human breast cancer and a variety of other tumour types including head and neck squamous cell carcinoma, where its overexpression correlates with increased tumour invasion. Progress in studying its functional role in tumour pathogenesis has been hampered by the paucity of antibodies for its specific and sensitive detection. It has proven very difficult to obtain monoclonal antibodies (mAbs) against this highly conserved protein but we report here that combining infection of mice with lactate dehydrogenase elevating virus (LDV), a B cell activating arterivirus, with conjugation of human POSTN to ovalbumin as an immunogenic carrier, enabled us to develop six mAbs recognizing both human and mouse POSTN and inhibiting its binding to αvβ3 integrin. Two of the mAbs, MPB4B1 and MPC5B4, were tested and found to inhibit POSTN‐induced migration of human endothelial colony forming cells. All six mAbs recognized amino acids 136‐51 (APSNEAWDNLDSDIRR) within the POSTN fascilin (FAS) 1‐1 domain revealing the functional importance of this motif; this was further highlighted by the ability of aa 136–151 peptide to inhibit integrin‐mediated cell migration. Immunohistochemistry using MPC5B4, indicated that breast tumour cell POSTN expression was a strong prognostic indicator, along with tumour size, lymph node, and human epidermal growth factor receptor 2 (HER2) status.     

乳腺癌骨转移差异基因的生物信息学分析

目的:在生物信息学数据库中挖掘乳腺癌骨转移的差异表达基因(differentially expressed genes,DEGs),探讨DEGs的细胞定位、分子功能及其潜在的分子机制,寻找乳腺癌骨转移的潜在治疗靶点和预后预测基因.方法:通过在基因表达数据库(GEO)中筛选乳腺癌骨转移相关芯片数据,使用RStudio对芯...     

Sclerostin blockade promotes bone metastases of Wnt-responsive breast cancer cells

The secreted protein sclerostin is primarily produced by osteocytes and suppresses osteoblast differentiation and function by inhibiting the canonical Wnt signaling pathway. Genetic and pharmacological inhibition of sclerostin has been shown to increase bone formation and an anti-sclerostin antibody has been clinically approved for the treatment of osteoporosis. Canonical Wnt signaling is also involved in the progression of several types of cancers including breast cancer. Here, we studied the effects of sclerostin inhibition on the development of bone metastases of breast cancer using mouse models. TOPFLASH assay and real-time PCR analysis of AXIN2, a target of canonical Wnt signaling, revealed that, among four cell lines tested, MDA-MB-231 human breast cancer cells responded highly to the canonical Wnt ligand Wnt3a, whereas other cell lines exhibited marginal responses. Consistent with these results, treatment with an anti-sclerostin antibody significantly increased the bone metastases of MDA-MB-231 but not those of other breast cancer cells. Immunohistochemical studies demonstrated that an anti-sclerostin antibody induced intracellular accumulation of β-catenin in bone-colonized MDA-MB-231 cells. Suspension culture assays showed that Wnt3a accelerated the tumorsphere formation of MDA-MB-231 cells, whereas monolayer cell proliferation and migration were not affected. Furthermore, the numbers of osteoclasts and their precursor cells in bone metastases of MDA-MB-231 were significantly increased in mice treated with an anti-sclerostin antibody. These results collectively suggest that sclerostin blockade activates canonical Wnt signaling in ligand-responsive breast cancer cells metastasized to bone, thereby increasing bone metastases, likely to have been mediated at least in part by enhancing stem cell-like properties of cancer cells and osteoclastogenesis.     

乳腺癌骨转移放射治疗临床分析(附32例报告)

目的　探讨乳腺癌骨转移的临床特点及放射治疗效果。方法　回顾分析 3 2例乳腺癌骨转移资料 ,转移灶单发 10例 ,多发 2 2例 ,共 68处病灶 ,其中脊柱占 2 7 9% ,骨盆占 2 2 1% ,肋骨占 13 2 %、股骨占10 3 % ,其余依次为肱骨、颅骨、肩胛骨、胫骨、锁骨。 2 2例行放射治疗 ,放疗前中度疼痛 17例 ,重度疼痛 5例 ,6例功能障碍。结果　 2 2例治疗后完全缓解 16例 ,部分缓解 6例 ,卡氏评分有所改善 ,功能障碍均恢复 ,治疗后的 1、2、3年生存率分别为 5 9 1%、2 2 7%、4 5 % ,中位生存期 15月 ,而未治组 10例的中位生存期为 4 5月 (P <0 0 1)。结论　乳腺癌骨转移行放射治疗 ,止痛作用快而持久 ,提高了患者的生存质量 ,是一种简单有效的治疗方法     

Role of betulinic acid derivative SH-479 in triple negative breast cancer and bone microenvironment

Breast cancer has a high prevalence in the general population and is often associated with bone metastasis. Specific therapeutic targets are missing for triple negative breast cancer (TNBC), which presents some immunogenic characteristics. Betulinic acid (BA) has been reported to have some anti-tumor properties, and its modified derivative SH-479 was demonstrated to inhibit TNBC bone metastasis. The present study aimed to investigate the effect of the BA derivative SH-479 on breast cancer and bone microenvironment. The effect of BA and its derivative SH-479 on MDA-MB-231 cell proliferation was determined with the MTS method. The cytotoxicity effect of SH-479 was evaluated using the Live and Dead assay. Cell microfilament changes were observed by F-actin staining. The effects of SH-479 on PARP protein expression and cell cycle were detected by western blotting and flow cytometry, respectively. The migratory ability of breast cancer cells treated with SH-479 was determined by migration assay. The effect of SH-479 on osteoclast differentiation induced by breast cancer cells was observed using the osteoclast differentiation assay and tartrate-resistant acid phosphatase staining. The effects of SH-479 on T lymphocytes and bone marrow-derived suppressor cells (MDSCs) in bone marrow from mice were observed by flow cytometry. The results demonstrated that SH-479 significantly inhibited the proliferation of the TNBC cell line MDA-MB-231 at lower concentrations but had no significant effect on normal cells and other types of breast cancer cells for the same concentration. Furthermore, SH-479 significantly interfered with actin microfilaments in breast cancer cells but had no effect on cell apoptosis and cell cycle. In addition, SH-479 inhibited the migratory ability of breast cancer cells and the differentiation of osteoclasts induced by breast cancer cells. In bone marrow immune microenvironment, addition of SH-479 could promote the proliferation of CD4+T lymphocytes and inhibit the proliferation of MDSCs. Taken together, the findings from this study demonstrated that SH-479 inhibited the activity and migratory ability of TNBC cells and the differentiation of osteoclasts induced by TNBC and affected the bone marrow immune microenvironment. SH-479 may therefore inhibit breast cancer metastasis to bones, indicating that SH-479 may be considered as a promising drug to inhibit bone metastasis in patients with breast cancer.     

乳腺癌骨转移机制与靶向治疗进展

乳腺癌骨转移是晚期乳腺癌常见的症状,乳腺癌细胞通过局部浸润、渗入血管和或淋巴管、随循环系统转移到骨、移出血管和或淋巴管、在骨定居并增殖引起溶骨性骨损伤。乳腺癌骨转移的发生发展取决于乳腺癌细胞与骨局部微环境之间相互作用,最后形成骨的结构破坏及功能受损。本文主要从分子水平阐述乳腺癌骨转移机制,并且综述针对乳腺癌骨转移关键靶点的抗骨转移药物的临床应用。     

Caveolin-1在浸润性乳腺癌间质中的表达及临床病理意义

目的:探讨窖蛋白-1(Caveolin-1)在乳腺癌间质中的表达及其与乳腺癌发生、发展及转移的关系。方法:运用免疫组织化学SP法研究Caveolin-1在正常乳腺癌间质和正常乳腺间质中的表达。结果:80例乳腺癌组织中间质Caveolin-1的表达阳性率分别为55%,而在36例正常乳腺组织中间质Caveolin-1的表达阳性率为75%,两者比较有显著差异(P=0.042);间质Caveolin-1的表达阳性率在乳腺癌高、中分化组明显高于低分化组,转移阳性组明显高于转移阴性组,其差异均有统计学意义(P=0.025);复发组间质Caveolin-1的表达阳性率也明显低于未复发组,其差异有统计学意义(P=0.012)。K-M生存曲线显示间质Caveolin-1的表达阴性患者的无瘤生存率也明显低于间质Caveolin-1的表达阳性患者(P=0.008)。多因素COX逐步回归分析结果显示间质Caveolin-1是无瘤生存率(P=0.031)的独立因素。结论:间质Cave-olin-1可能在乳腺癌的发生、发展及转移过程中起着关键性作用。     

Caveolin-1在浸润性乳腺癌间质中的表达及临床病理意义

目的：探讨窖蛋白-1（Caveolin-1）在乳腺癌间质中的表达及其与乳腺癌发生、发展及转移的关系。方法：运用免疫组织化学SP法研究Caveolin-1在正常乳腺癌间质和正常乳腺间质中的表达。结果：80例乳腺癌组织中间质Caveolin-1的表达阳性率分别为55%,而在36例正常乳腺组织中间质Caveolin-1的表达阳性率为75%,两者比较有显著差异（P=0.042）;间质Caveolin-1的表达阳性率在乳腺癌高、中分化组明显高于低分化组,转移阳性组明显高于转移阴性组,其差异均有统计学意义（P=0.025）;复发组间质Caveolin-1的表达阳性率也明显低于未复发组,其差异有统计学意义（P=0.012）。K-M生存曲线显示间质Caveolin-1的表达阴性患者的无瘤生存率也明显低于间质Caveolin-1的表达阳性患者（P=0.008）。多因素COX逐步回归分析结果显示间质Caveolin-1是无瘤生存率（P=0.031）的独立因素。结论：间质Cave-olin-1可能在乳腺癌的发生、发展及转移过程中起着关键性作用。