PC, prostate cancer

PC,前列腺癌
  • 文章类型: Journal Article
    未经证实:患有前列腺癌(PC)的男性心血管疾病(CVD)的发病率高于没有前列腺癌的男性。
    未经评估:我们描述了男性PC患者心血管危险因素控制不良的发生率和相关性。
    UNASSIGNED:我们对加拿大24个地点的2,811名连续男性(平均年龄68±8岁)进行了前瞻性表征,以色列,巴西,和澳大利亚。我们将总体风险因素控制不良定义为以下各项中的≥3:低密度脂蛋白胆固醇次优(如果Framingham风险评分[FRS]≥15,则>2mmol/L,如果FRS<15,则≥3.5mmol/L),目前的吸烟者,身体不活动(<600METmin/wk),次优血压(BP)(≥140/90mmHg,如果没有其他危险因素,如果已知CVD或FRS≥15,则收缩压≥120mmHg,如果糖尿病,则收缩压≥130/80mmHg),腰围:臀围比>0.9。
    未经评估:在参与者中(9%患有转移性PC,23%患有预先存在的CVD),99%有≥1个未控制的心血管危险因素,51%的患者总体危险因素控制不佳。不服用他汀类药物(优势比[OR]:2.55;95%CI:2.00-3.26),身体虚弱(OR:2.37;95%CI:1.51-3.71),需要BP药物(OR:2.36;95%CI:1.84-3.03),和年龄(每10年增加的OR:1.34;95%CI:1.14-1.59)与调整教育后总体风险因素控制不佳相关,PC特性,雄激素剥夺疗法,抑郁症,和东部肿瘤协作组的功能状态。
    未经评估:可改变的心血管危险因素控制不良在患有PC的男性中很常见,强调该人群在护理方面的巨大差距以及需要改进干预措施以优化心血管风险管理。
    UNASSIGNED: Cardiovascular disease (CVD) incidence is higher in men with prostate cancer (PC) than without.
    UNASSIGNED: We describe the rate and correlates of poor cardiovascular risk factor control among men with PC.
    UNASSIGNED: We prospectively characterized 2,811 consecutive men (mean age 68 ± 8 years) with PC from 24 sites in Canada, Israel, Brazil, and Australia. We defined poor overall risk factor control as ≥3 of the following: suboptimal low-density lipoprotein cholesterol (>2 mmol/L if Framingham Risk Score [FRS] ≥15 and ≥3.5 mmol/L if FRS <15), current smoker, physical inactivity (<600 MET min/wk), suboptimal blood pressure (BP) (≥140/90 mm Hg if no other risk factors, systolic BP ≥120 mm Hg if known CVD or FRS ≥15, and ≥130/80 mm Hg if diabetic), and waist:hip ratio >0.9.
    UNASSIGNED: Among participants (9% with metastatic PC and 23% with pre-existing CVD), 99% had ≥1 uncontrolled cardiovascular risk factor, and 51% had poor overall risk factor control. Not taking a statin (odds ratio [OR]: 2.55; 95% CI: 2.00-3.26), physical frailty (OR: 2.37; 95% CI: 1.51-3.71), need for BP drugs (OR: 2.36; 95% CI: 1.84-3.03), and age (OR per 10-year increase: 1.34; 95% CI: 1.14-1.59) were associated with poor overall risk factor control after adjustment for education, PC characteristics, androgen deprivation therapy, depression, and Eastern Cooperative Oncology Group functional status.
    UNASSIGNED: Poor control of modifiable cardiovascular risk factors is common in men with PC, highlighting the large gap in care and the need for improved interventions to optimize cardiovascular risk management in this population.
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  • 文章类型: Journal Article
    RNA中的转录后修饰调节其生物学行为和功能。N1-甲基腺苷(m1A),由作者动态调节,橡皮擦和阅读器,已被发现是tRNA的可逆修饰,mRNArRNA和长链非编码RNA(lncRNA)。m1A修饰对RNA加工有影响,目标的结构和功能。越来越多的研究揭示了m1A修饰及其调节因子在肿瘤发生中的关键作用。由于m1A与癌症发展之间的正相关性,针对m1A修饰和与m1A相关的调节因子一直受到关注。在这次审查中,我们总结了目前对RNA中m1A的理解,涵盖了癌症生物学中m1A修饰的调制,以及靶向m1A修饰作为癌症诊断和治疗的潜在靶标的可能性。
    Post-transcriptional modifications in RNAs regulate their biological behaviors and functions. N1-methyladenosine (m1A), which is dynamically regulated by writers, erasers and readers, has been found as a reversible modification in tRNA, mRNA, rRNA and long non-coding RNA (lncRNA). m1A modification has impacts on the RNA processing, structure and functions of targets. Increasing studies reveal the critical roles of m1A modification and its regulators in tumorigenesis. Due to the positive relevance between m1A and cancer development, targeting m1A modification and m1A-related regulators has been of attention. In this review, we summarized the current understanding of m1A in RNAs, covering the modulation of m1A modification in cancer biology, as well as the possibility of targeting m1A modification as a potential target for cancer diagnosis and therapy.
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  • 文章类型: Journal Article
    未经评估:报告单份早期前列腺照射(SiFEPI)2期前瞻性试验的结果。
    UNASSIGNED:SiFEPI试验(NCT02104362)评估了高剂量率近距离放射治疗(HDB)对低(LR)和有利中度(FIR)风险前列腺癌的单个部分。直肠垫片放置后,将20Gy的单个部分递送至前列腺。肿瘤结果(生化(bRFS)和局部(lRFS)复发,无病(DFS)和总体(OS)生存率和毒性(急性/晚期生殖泌尿(GU),研究了胃肠道(GI)和性(S)毒性。
    UNASSIGNED:从2014年3月到2017年10月,注册了35名其中33人可以评估。年龄中位数为66岁[46-79],LR和FIR分别为25例(76%)和8例(24%)。MFU为72.8个月[64-86],6y-bRFS,lRFS和mRFS为62%[45-85],分别为61%[44-85]和93%[85-100],而6y-DFS,CSS和OS为54%[37-77],分别为100%和89%[77-100]。晚GU,在11名患者中观察到GI和S毒性(33%;18G1),分别为4分(12%;4G1)和7分(21%;1G1、5G2、1G3)。在11名患者中观察到生化复发(BR)(33%;7LR,4FIR),HDB和BR之间的中位时间间隔为51个月[24-69]。其中9例(82%)经组织学证实为孤立的局部复发。
    UNASSIGNED:SiFEPI试验的长期结果表明,20Gy的单个部分导致LR/FIR前列腺癌的生化控制次优。晚期GU和GI毒性特征令人鼓舞,导致考虑将HDB作为一种安全的辐照技术。
    UNASSIGNED: To report the results of the Single Fraction Early Prostate Irradiation (SiFEPI) phase 2 prospective trial.
    UNASSIGNED: The SiFEPI trial (NCT02104362) evaluated a single fraction of high-dose rate brachytherapy (HDB) for low- (LR) and favorable-intermediate (FIR) risk prostate cancers. After rectal spacer placement, a single fraction of 20 Gy was delivered to the prostate. Oncological outcome (biochemical (bRFS) and local (lRFS) relapses, disease-free (DFS) and overall (OS) survivals and toxicity (acute/late genito-urinary (GU), gastro-intestinal (GI) and sexual (S) toxicities were investigated.
    UNASSIGNED: From 03/2014 to 10/2017, 35 pts were enrolled, of whom 33 were evaluable. With a median age of 66 y [46-79], 25 (76 %) and 8 (24 %) pts were LR and FIR respectively. With a MFU of 72.8 months [64-86], 6y-bRFS, lRFS and mRFS were 62 % [45-85], 61 % [44-85] and 93 % [85-100] respectively while 6y-DFS, CSS and OS were 54 % [37-77], 100 % and 89 % [77-100] respectively. Late GU, GI and S toxicities were observed in 11 pts (33 %;18G1), 4 pts (12 %;4G1) and 7 pts (21 %;1G1,5G2,1G3) respectively. Biochemical relapse (BR) was observed in 11 pts (33 %;7LR,4FIR) with a median time interval between HDB and BR of 51 months [24-69]. Nine of these pts (82 %) presented a histologically proven isolated local recurrence.
    UNASSIGNED: Long-term results of the SiFEPI trial show that a single fraction of 20 Gy leads to sub-optimal biochemical control for LR/FIR prostate cancers. The late GU and GI toxicity profile is encouraging, leading to consideration of HDB as a safe irradiation technique.
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  • 文章类型: Journal Article
    UNASSIGNED:将少数民族/种族纳入临床试验对于全面评估治疗效果至关重要。众所周知,人们对干预措施的反应不同。我们的目标是分析少数男性在勃起功能障碍(ED)临床试验中的纳入情况。
    UNASSIGNED:我们在ClinicalTrials.gov中搜索了疾病关键字:\"勃起功能障碍\",并使用\"前列腺癌\"进行比较。纳入报告人口统计学数据的已完成试验进行分析。文献回顾以确定西班牙裔美国人中ED和前列腺癌(PC)的患病率,黑色,白色,亚洲男人将参与试验的每个组的个体比例除以疾病人群中每个组的比例,以计算“参与与患病率比”(PPR)。PPRs在0.8和1.2之间表示足够的代表性,<0.8表示不足,>1.2表示过高。
    未经评估:总共评估了312项试验:289项用于前列腺癌,23项用于ED。西班牙裔男性占ED试验参与者的11.8%和前列腺癌试验参与者的4.6%。但占18%的ED患者和7.3%的PC患者.黑人/非裔美国人(AA)男性占ED试验参与者的10.2%和PC试验参与者的9.4%,但占ED患者的16%,和16.3%的PC患者。在ED和前列腺癌的试验中,西班牙裔和AA男性的代表性不足(西班牙裔EDPPR=0.66;西班牙裔PCPPR=0.63;AAEDPPR=0.64;AAPCPPR=0.58)。
    UNASSIGNED:我们的分析表明,西班牙裔和AA男性在ED和PC临床试验中的代表性不足。
    UNASSIGNED: Inclusion of ethnic/racial minorities in clinical trials is essential to fully assess therapeutic efficacy. It is well-known that populations respond dissimilarly to interventions. Our objective is to analyze the inclusion of minority men in clinical trials for erectile dysfunction (ED).
    UNASSIGNED: We searched ClinicalTrials.gov for the disease keyword: \"Erectile Dysfunction\" and used \"Prostate Cancer\" for comparison. Completed trials which reported demographic data were included for analysis. Literature was reviewed to determine the prevalence of ED and prostate cancer (PC) among Hispanic, Black, White, and Asian men. The proportion of individuals of each group that participated in trials is divided by the proportion of each group in the disease population to calculate the \"Participation to Prevalence Ratio\" (PPR). PPRs between 0.8 and 1.2 indicates adequate representation, <0.8 is under-representation and >1.2 is over-representation.
    UNASSIGNED: A total of 312 trials were assessed: 289 for prostate cancer and 23 for ED. Hispanic men comprised 11.8% of ED trial participants and 4.6% of prostate cancer trial participants, yet represented 18% of ED patients and 7.3% of PC patients. Black/African-American (AA) men accounted for 10.2% of ED trial participants and 9.4% of PC trial participants, but comprise 16% of ED patients, and 16.3% of PC patients. Hispanic and AA men are under-represented in trials for ED and Prostate Cancer (Hispanic ED PPR = 0.66; Hispanic PC PPR = 0.63; AA ED PPR = 0.64; AA PC PPR = 0.58).
    UNASSIGNED: Our analysis shows that both Hispanic and AA men are underrepresented in both ED and PC clinical trials.
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  • 文章类型: Journal Article
    分析高剂量率近距离放射治疗(HDB)后老年(>70岁)前列腺癌的肿瘤学结果。
    在这项回顾性研究中,患有中度(IR)和高危(HR)前列腺癌的患者接受了体外束放射治疗(EBRT),随后接受有/无雄激素剥夺治疗(ADT)的HDB强化治疗.年龄的影响(≤70yvs.>70y)进行了调查。肿瘤结果集中在生化无复发生存率(bRFS),病因特异性(CSS)和总体生存率(OS)。研究了泌尿晚期(GU)和胃肠道(GI)毒性。
    从07/08到01/22,有518人获得了HDB提升,和380进行了分析(≤70y:177分[46.6%]与>70y:203分[53.4%])。关于NCCN分类,IR和HRpts分别为98分(≤70y:53分;>70y:45分;p=0.107)和282分(≤70y:124分;>70y:158分;p=NS)。平均EBRT剂量为46Gy[37.5-46],分为23个部分[14-25]。HDB增强提供了14/15Gy(79%)的单个分数。ADT用于302名患者(≤70y:130名;>70y:172名;p=0.01)。整个队列的MFU为72.6个月[67-83],5-ybRFS,5-yCSS和5-yOS为88%[85-92],分别为99%[97-100]和94%[92-97];除了5-yCSS外,两个年龄组之间没有统计学差异(p=0.05)。晚期GU和GI毒性率分别为32.4%(G≥37.3%)和10.1%(无G3)。
    对于IR和HR前列腺癌,HDB增加导致疾病控制率高,晚期G≥3GU/GI毒性很少。对于老年人来说,HDB的增长仍然是有必要的,主要是人力资源,而竞争共病因素影响OS。
    UNASSIGNED: To analyze the oncological outcome in elderly (>70 years) prostate cancer after high-dose rate brachytherapy (HDB) boost.
    UNASSIGNED: In this retrospective study, patients with intermediate (IR) and high-risk (HR) prostate cancer underwent external beam radiation therapy (EBRT) followed by HDB boost with/without androgen deprivation therapy (ADT). The impact of age (≤70y vs. > 70y) was investigated. Oncological outcome focused on biochemical relapse-free survival (bRFS), cause-specific (CSS) and overall survival (OS). Late genito-urinary (GU) and gastro-intestinal (GI) toxicities were investigated.
    UNASSIGNED: From 07/08 to 01/22, 518 pts received a HDB boost, and 380 were analyzed (≤70y:177pts [46.6%] vs. > 70y:203pts [53.4%]). Regarding NCCN classification, 98 pts (≤70y: 53pts; >70y: 45pts; p = 0.107) and 282 pts (≤70y: 124pts; >70y: 158pts; p = NS) were IR and HR pts respectively. Median EBRT dose was 46 Gy [37.5-46] in 23 fractions [14-25]. HDB boost delivered a single fraction of 14/15 Gy (79%). ADT was used in 302 pts (≤70y: 130pts; >70y: 172pts; p = 0.01). With MFU of 72.6 months [67-83] for the whole cohort, 5-y bRFS, 5-y CSS and 5-y OS were 88% [85-92], 99% [97-100] and 94% [92-97] respectively; there was no statistical difference between the two age groups except for 5-y CSS (p = 0.05). Late GU and GI toxicity rates were 32.4% (G ≥ 3 7.3%) and 10.1% (no G3) respectively.
    UNASSIGNED: For IR and HR prostate cancers, HDB boost leads to high rates of disease control with few late G ≥ 3 GU/GI toxicities. For elderly pts, HDB boost remains warranted mainly in HR pts, while competing comorbidity factors influence OS.
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  • 文章类型: Journal Article
    UNASSIGNED:分析有关老年人中高危前列腺癌(PC)放射治疗的文献。
    UNASSIGNED:进行了PubMed文献检索,其中包括2000年1月1日至21年6月30日的文章,关键字如下:PC,放射治疗/近距离放射治疗和老年人。分析主要集中在老年人治疗不足的问题和辐射的利益/风险平衡。
    未经评估:在分析的176个参考文献中,24符合选择标准。“老年患者”的定义从70岁到80岁不等。分析受到每个队列中使用的不均匀主要终点的影响。年龄通常是激进治疗的障碍,随后有治疗不足的风险,特别是在预后较差的患者中。然而,将可比较的老年肿瘤结局与年轻患者进行比较,无论是单独使用外束放射治疗还是结合近距离放射治疗。晚期毒性率低,通常与年轻人群相当。然而,超老年人(>80岁)在加强近距离放射治疗后观察到尿毒性过度。应根据合并症考虑使用ADT,甚至可能对某些患者有害。
    未经评估:由于预期寿命的增加,老年人的PC管理对患者来说是一个挑战,临床医生和医疗保险付款人。除了不适合的男人,老年患者在进行老年病学评估后仍可选择最佳治疗方案(即不论年龄大小).来自专门针对该人群进行的前瞻性试验的更可靠数据将为我们的日常临床实践提供更好的指导。
    UNASSIGNED: To analyze the literature that addresses radiation therapy for intermediate and high-risk prostate cancer (PC) in the elderly.
    UNASSIGNED: A PubMed literature search was conducted including articles from 01/01/2000 to 30/06/21, with the following keywords: PC, radiotherapy/brachytherapy and elderly. The analysis mainly focused on the issue of under-treatment in the elderly and the benefit/risk balance of irradiation.
    UNASSIGNED: Of the 176 references analyzed, 24 matched the selection criteria. The definition of \"elderly patient\" varied from 70 to 80 years. The analysis was impacted by the inhomogeneous primary end points used in each cohort. Age was often an obstacle to radical treatment, with a subsequent risk of under-treatment, particularly in patients with a poorer prognosis. However, comparable elderly oncological outcomes were compared to younger patients, both with external beam radiotherapy alone or combined with brachytherapy boost. Late toxicity rates are low and most often comparable to younger populations. However, a urinary over- toxicity was observed in the super-elderly (>80 years) after brachytherapy boost. The use of ADT should be considered in light of comorbidities, and may even be deleterious in some patients.
    UNASSIGNED: Due to the increase in life expectancy, the management of PC in the elderly is a challenge for patients, clinicians and health insurance payers. Except for unfit men, elderly patients remain candidates for optimal curative treatment (i.e. regardless of age) after oncogeriatric assessment. More solid data from prospective trials conducted specially in this population will provide better guidance in our daily clinical practice.
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  • 文章类型: Journal Article
    未经批准:前列腺癌根治术,局部前列腺癌(PC)的标准管理方法,可能会引起与免疫调节作用相关的应激反应。假设区域麻醉通过最小化神经内分泌手术应激反应来降低手术的免疫效应。从而减轻肿瘤细胞的播散。我们的主要目的是研究在动物模型上使用脊髓块是否会减弱PC肿瘤细胞的播散。我们还评估了循环NK细胞的数量以及炎症和抗炎细胞因子的量。
    未经证实:皮下肿瘤模型,使用用荧光素酶产生基因(PC-3M-luc-C6)转染的PC-3M细胞系。在适当的肿瘤建立后和肿瘤转移之前,动物在全身麻醉或联合麻醉(全身麻醉和脊髓麻醉)下接受肿瘤切除手术。对照组仅全身麻醉。
    UNASSIGNED:具有PC-3M-luc-C6细胞的皮下肿瘤模型在35天后可有效引起远处转移。与接受联合麻醉的组相比,仅在全身麻醉下接受手术的动物中循环肿瘤细胞的数量增加。白细胞介素6水平在各组均有差异,随着全身麻醉组的增加。
    UNASSIGNED:我们的研究结果表明,椎管内麻醉和全身麻醉联合使用可能会减弱对先天肿瘤免疫的抑制,这可能与手术后神经内分泌反应的减少有关。
    未经批准:动物伦理委员会1332/2019。
    UNASSIGNED: Radical prostatectomy, a standard management approach for localized Prostate Cancer (PC), may cause a stress response associated with immune modulating effects. Regional anesthesia was hypothesized to reduce the immune effects of surgery by minimizing the neuroendocrine surgical stress response, thus mitigating tumor cells dissemination. Our primary objective was to investigate whether the use of spinal blocks attenuates PC tumor cells dissemination on an animal model. We also assessed the number of circulating NK cells and the amount of inflammatory and anti-inflammatory cytokines.
    UNASSIGNED: A subcutaneous tumor model, with PC-3M cell line transfected with a luciferase-producing gene (PC-3M-luc-C6) was used. After proper tumor establishment and before tumors became metastatic, animals were submitted to tumor excision surgeries under general or combined (general and spinal) anesthesia. A control group was only anesthetized with general anesthesia.
    UNASSIGNED: The subcutaneous tumor model with PC-3M-luc-C6 cells was effective in causing distant metastasis after 35 days. The number of circulating tumor cells increased in animals that underwent surgery under general anesthesia alone compared to the group submitted to combined anesthesia. Interleukin 6 levels were different in all groups, with increase in the general anesthesia group.
    UNASSIGNED: Our results suggest that combination of spinal and general anesthesia may attenuate the suppression of innate tumor immunity and it might be related to a reduction in the neuroendocrine response to surgery.
    UNASSIGNED: Animal Ethics Committee 1332/2019.
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  • 文章类型: Journal Article
    UNASSIGNED: Prolonged androgen deprivation therapy (ADT) is favored over short-term use in patients with localized high-risk prostate cancer (PC).
    UNASSIGNED: This study sought to compare cardiorespiratory fitness (CRF) and cardiovascular (CV) mortality among patients with PC with and without ADT exposure and to explore how duration of ADT exposure influences CRF and CV mortality.
    UNASSIGNED: Retrospective cohort study of patients referred for exercise treadmill testing (ETT) after a PC diagnosis. PC risk classification was based on Gleason score (GS): high risk if GS ≥8; intermediate risk if GS = 7; and low risk if GS <7. CRF was categorized by metabolic equivalents (METs): METs >8 defined as good CRF and METs ≤8 as reduced CRF. ADT exposure was categorized as short term (≤6 months) versus prolonged (>6 months).
    UNASSIGNED: A total of 616 patients underwent an ETT a median of 4.8 years (interquartile range: 2.0, 7.9 years) after PC diagnosis. Of those, 150 patients (24.3%) received ADT prior to the ETT; 99 with short-term and 51 with prolonged exposure. 504 patients (81.8%) had ≥2 CV risk factors. Prolonged ADT was associated with reduced CRF (odds ratio [OR]: 2.71; 95% confidence interval [CI]: 1.31 to 5.61; p = 0.007) and increased CV mortality (hazard ratio [HR]: 3.87; 95% CI: 1.16 to 12.96; p = 0.028) in adjusted analyses. Although the association between short-term ADT exposure and reduced CRF was of borderline significance (OR: 1.71; 95% CI: 1.00 to 2.94; p = 0.052), there was no association with CV mortality (HR: 1.60; 95% CI: 0.51 to 5.01; p = 0.420) in adjusted Cox regression models.
    UNASSIGNED: Among patients with PC and high baseline CV risk, prolonged ADT exposure was associated with reduced CRF and increased CV mortality.
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  • 文章类型: Journal Article
    作为洞穴最重要的组成部分之一,caveolin-1参与caveolae介导的胞吞和转胞吞途径,并在调节细胞膜胆固醇稳态和介导信号转导中起作用。近年来,caveolin-1在肿瘤微环境中的表达水平与肿瘤治疗预后效果及药物治疗耐药的关系也被广泛探讨。此外,caveolin-1和纳米药物之间的相互作用是双向的。Caveolin-1可以确定特定纳米药物的细胞内生物产物,防止溶酶体降解,并促进它们通过胞吞作用渗透到肿瘤的更深部位;而一些纳米载体也可能影响肿瘤细胞中的caveolin-1水平,从而改变细胞的某些生物物理功能。本文综述了caveolin-1在肿瘤预后中的作用。化疗耐药,抗体药物敏感性,和纳米药物递送,为caveolin-1在纳米给药系统中的进一步应用提供参考。
    As one of the most important components of caveolae, caveolin-1 is involved in caveolae-mediated endocytosis and transcytosis pathways, and also plays a role in regulating the cell membrane cholesterol homeostasis and mediating signal transduction. In recent years, the relationship between the expression level of caveolin-1 in the tumor microenvironment and the prognostic effect of tumor treatment and drug treatment resistance has also been widely explored. In addition, the interplay between caveolin-1 and nano-drugs is bidirectional. Caveolin-1 could determine the intracellular biofate of specific nano-drugs, preventing from lysosomal degradation, and facilitate them penetrate into deeper site of tumors by transcytosis; while some nanocarriers could also affect caveolin-1 levels in tumor cells, thereby changing certain biophysical function of cells. This article reviews the role of caveolin-1 in tumor prognosis, chemotherapeutic drug resistance, antibody drug sensitivity, and nano-drug delivery, providing a reference for the further application of caveolin-1 in nano-drug delivery systems.
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  • 文章类型: Journal Article
    背景:前列腺癌是全球男性中第二常见的癌症。开发用于前列腺癌(PC)的新的治疗方法和诊断生物标志物是重要的需要。据报道,中草药西洋参皂苷(PQS)具有抗肿瘤作用。我们假设PQS在人PC细胞中表现出抗癌活性,我们旨在寻找能够早期诊断PC的新型生物标志物。
    方法:我们使用人PC细胞系DU145和前列腺上皮细胞系PNT2进行细胞活力测定,细胞周期的流式细胞术分析,和基于FACS的细胞凋亡测定。基于微阵列的基因表达分析用于显示特定的基因表达模式并搜索新的生物标志物。进行Western印迹和定量实时PCR以证明多个癌症相关基因的表达水平。
    结果:我们的数据显示,PQS抑制DU145细胞的活力,并在G1期诱导细胞周期停滞。通过PQS处理24小时后观察到DU145细胞侵袭和迁移的显着降低。PQS上调p21、p53、TMEM79、ACOXL、ETV5和SPINT1下调bcl2、STAT3、FANCD2、DRD2和TMPRSS2的表达水平。
    结论:PQS促进DU145细胞凋亡,抑制DU145细胞增殖,这表明PQS可能对治疗PC有效。TMEM79和ACOXL在PNT2中的表达显著高于在DU145细胞中的表达,并且可以是用于PC诊断的新的生物标志物候选物。
    BACKGROUND: Prostate carcinoma is the second most common cancer among men worldwide. Developing new therapeutic approaches and diagnostic biomarkers for prostate cancer (PC) is a significant need. The Chinese herbal medicine Panax quinquefolius saponins (PQS) have been reported to show anti-tumor effects. We hypothesized that PQS exhibits anti-cancer activity in human PC cells and we aimed to search for novel biomarkers allowing early diagnosis of PC.
    METHODS: We used the human PC cell line DU145 and the prostate epithelial cell line PNT2 to perform cell viability assays, flow cytometric analysis of the cell cycle, and FACS-based apoptosis assays. Microarray-based gene expression analysis was used to display specific gene expression patterns and to search for novel biomarkers. Western blot and quantitative real-time PCR were performed to demonstrate the expression levels of multiple cancer-related genes.
    RESULTS: Our data showed that PQS inhibited the viability of DU145 cells and induced cell cycle arrest at the G1 phase. A significant decrease in DU145 cell invasion and migration were observed after 24 h treatment by PQS. PQS up-regulated the expression levels of p21, p53, TMEM79, ACOXL, ETV5, and SPINT1 while it down-regulated the expression levels of bcl2, STAT3, FANCD2, DRD2, and TMPRSS2.
    CONCLUSIONS: PQS promoted cells apoptosis and inhibited the proliferation of DU145 cells, which suggests that PQS may be effective for treating PC. TMEM79 and ACOXL were expressed significantly higher in PNT2 than in DU145 cells and could be novel biomarker candidates for PC diagnosis.
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