1.Imaging poly(ADP-ribose) polymerase-1 (PARP1) in vivo with 18F-labeled brain penetrant positron emission tomography (PET) ligand.
Xin ZHOU ; Jiahui CHEN ; Jimmy S PATEL ; Wenqing RAN ; Yinlong LI ; Richard S VAN ; Mostafa M H IBRAHIM ; Chunyu ZHAO ; Yabiao GAO ; Jian RONG ; Ahmad F CHAUDHARY ; Guocong LI ; Junqi HU ; April T DAVENPORT ; James B DAUNAIS ; Yihan SHAO ; Chongzhao RAN ; Thomas L COLLIER ; Achi HAIDER ; David M SCHUSTER ; Allan I LEVEY ; Lu WANG ; Gabriel CORFAS ; Steven H LIANG
Acta Pharmaceutica Sinica B 2025;15(10):5036-5049
Poly(ADP-ribose) polymerase 1 (PARP1) is a multifunctional protein involved in diverse cellular functions, notably DNA damage repair. Pharmacological inhibition of PARP1 has therapeutic benefits for various pathologies. Despite the increased use of PARP inhibitors, challenges persist in achieving PARP1 selectivity and effective blood-brain barrier (BBB) penetration. The development of a PARP1-specific positron emission tomography (PET) radioligand is crucial for understanding disease biology and performing target occupancy studies, which may aid in the development of PARP1-specific inhibitors. In this study, we leverage the recently identified PARP1 inhibitor, AZD9574, to introduce the design and development of its 18F-isotopologue ([18F]AZD9574). Our comprehensive approach, encompassing pharmacological, cellular, autoradiographic, and in vivo PET imaging evaluations in non-human primates, demonstrates the capacity of [18F]AZD9574 to specifically bind to PARP1 and to successfully penetrate the BBB. These findings position [18F]AZD9574 as a viable molecular imaging tool, poised to facilitate the exploration of pathophysiological changes in PARP1 tissue abundance across various diseases.
2.Effects of α-hederin alone or in combination with cisplatin on the proliferation and apoptosis of non-small cell lung cancer cells based on EGFR/AKT and JAK2/STAT3 pathways
ZHU Zhiminga ; WANG Sumeib ; TANG Qingb ; WANG Xib ; WAN Xinliangb ; MO Handanb ; JIA Luyub ; YU Xiaoyanb ; ZHOU Qichunb
Chinese Journal of Cancer Biotherapy 2024;31(4):333-341
[摘 要] 目的:探讨α-常春藤皂苷(α-Hed)诱导非小细胞肺癌(NSCLC)细胞凋亡的作用靶点及其潜在机制,明确α-Hed与顺铂(DDP)联用后对相应的靶点蛋白表达的影响。方法:采用CCK-8法检测不同浓度α-Hed处理后NSCLC细胞A549、H1299和PC-9的存活率,采用Annexin Ⅴ-FITC/PI染色流式细胞术检测细胞凋亡率,采用WB法检测细胞中C-caspase-3和Bcl-2蛋白的表达。通过网络药理学相关方法筛选α-Hed的潜在靶点,利用分子对接法分析其结合效果,WB法检测靶点蛋白的表达。通过CCK-8法、细胞集落形成实验和WB法检测α-Hed与DDP联用对NSCLC细胞的抑制作用。结果:给药24和48 h后,10、15和20 μmol/L α-Hed可以显著抑制NSCLC细胞增殖活力(均P<0.01);与对照组相比,20 μmol/L α-Hed处理后细胞凋亡率显著升高(P<0.01);α-Hed可上调NSCLC细胞中C-caspase-3的表达(P<0.05),下调Bcl-2的表达(P<0.05)。网络药理学和分子对接筛选出结合亲和力小于-5 kcal/mol的靶点AKT1、STAT3、EGFR和JAK2。WB法检测结果显示,α-Hed处理后A549、H1299细胞中EGFR、p-AKT/AKT、p-STAT3/STAT3和JAK2蛋白的表达均明显下调(均P<0.05)。α-Hed与DDP联用后,更显著地抑制NSCLC细胞的增殖(P<0.01),进一步下调EGFR、p-AKT/AKT、p-STAT3/STAT3和JAK2蛋白的表达(P<0.05或P<0.01)。结论:α-Hed通过下调EGFR和JAK2的表达抑制STAT3和AKT的磷酸化,诱导NSCLC细胞凋亡,与DDP联用后其抑制效果增强,EGFR/AKT和JAK2/STAT3通路也进一步被抑制。
3.Analysis of driver gene mutations in “Xuanwei” multi-nodular non-small cell lung cancer
WANG Xiaoxionga ; LI Quana ; SHEN Zhenghaib ; CAI Jingjinga ; LI Zhuoyinga ; SHEN Shaoconga ; LI Hongshenga ; LIU Xina ; LIU Xia ; LIU Junxia ; GUO Yinjina ; DU Yaxia ; LAN Yunyia ; MA Luyaoa ; YANG Ruijiaoa ; WU Shunxiana ; ZHOU Yongchuna ; HUANG Yunchaob
Chinese Journal of Cancer Biotherapy 2024;31(4):377-382
[摘 要] 目的:探讨多结节非小细胞肺癌(NSCLC)组织中的驱动基因突变情况与临床病理特征的关系,为多结节NSCLC患者治疗提供分子诊断依据。方法:本研究共纳入2018年1月至2023年10月间云南省肿瘤医院分子诊断中心检测的121例多结节NSCLC患者的253个肺结节肿瘤组织标本,以第二代测序(NGS)技术或扩增阻滞突变系统PCR(ARMS-PCR)技术检测多结节NSCLC 组织中驱动基因突变情况,分析其与患者临床病理特征的关系,比较不同结节间肺癌驱动基因的突变异质性。结果:与非“宣威”NSCLC相比,“宣威”多结节NSCLC患者驱动基因突变具有显著的地域特点,表现在“宣威”患者具有较低(20%)的EGFR敏感突变(L858R、19-del)及较高(27.26%)的EGFR少见突变(主要为G719/S768I、G719);“宣威”多结节NSCLC患者的KRAS突变率(27.27%)亦显著高于非“宣威”患者突变率(12.59%)(P<0.05)。此外,“宣威”多结节NSCLC患者驱动基因突变不一致率高达69.23%,远高于非“宣威”患者驱动基因突变不一致率(55.07%)(P<0.05)。结论:“宣威”多结节NSCLC患者具有较高的EGFR少见突变及KRAS突变率,同一患者不同病灶之间存在更高的驱动基因突变异质性,本研究将为“宣威”多结节NSCLC的诊疗策略提供更多的选择。
4.Decanoic acid activates CD8+ T cells and enhances their anti-tumor immune responses
ZHANG Chonga ; JIN Haizhenb, ▲ ; ZHOU Chuna ; HU Huihuic ; WANG Juand ; WANG Qinlana,e
Chinese Journal of Cancer Biotherapy 2024;31(5):437-444
[摘 要] 目的:探究中链脂肪酸癸酸对CD8+ T细胞活化的影响,及其对CD8+ T细胞介导的抗肿瘤免疫反应的作用和机制。方法:建立C57BL/6小鼠黑色素瘤B16F10皮下荷瘤模型,随机分为癸酸组(10 mg/kg癸酸灌胃)和对照组(等量溶剂灌胃),观察癸酸对小鼠肿瘤生长以及生存率的影响,采用流式细胞术检测肿瘤微环境中浸润CD8+ T细胞的活化水平。建立B16F10-OVA和OT-I T细胞共培养体系,采用流式细胞术检测癸酸对CD8+ T细胞的肿瘤细胞杀伤能力的影响。采用α-CD8抗体清除B16F10荷瘤小鼠体内CD8+ T细胞,观察对小鼠肿瘤体积的影响。小鼠原代CD8+ T细胞经癸酸处理后,采用WB、ELISA及qPCR、流式细胞术检测T细胞受体(TCR)活化、效应细胞因子产生以及增殖和代谢水平。在B16F10荷瘤小鼠模型中,观察α-PD-1抗体联合癸酸给药对小鼠肿瘤生长以及生存率的影响。结果:在小鼠黑色素瘤荷瘤模型中,与对照组相比,癸酸组小鼠移植瘤体积显著降低且生存率显著提高(均P<0.05),肿瘤浸润CD8+ T细胞IFN-γ和TNF-α的表达水平显著升高(P<0.01)。经癸酸处理的OT-I T细胞对B16F10-OVA细胞的杀伤水平显著升高(P<0.01)。在荷瘤小鼠模型中用α-CD8抗体清除CD8+ T细胞后,癸酸对移植瘤的抑制作用显著降低(P<0.000 1)。小鼠原代CD8+ T细胞经癸酸处理后,TCR活化水平显著升高、细胞因子IL-2和IFN-γ的产生增多、线粒体代谢水平显著上调(均P<0.05)。在黑色素瘤荷瘤小鼠模型中,癸酸与α-PD-1抗体联用,能够显著抑制小鼠移植瘤生长并提高其生存率(均P<0.05)。结论:癸酸能够促进CD8+ T细胞活化、增强其抗肿瘤免疫反应能力。
5.Effects of genipin on the proliferation and mitochondrial function of hypopharyngeal carcinoma FaDu cells
PENG Yao1a ; ZHOU Ying1b ; GAO Yu1c ; LIU Ying1a ; XU Aofeng2 ; ZHANG Chang1b ; ZHANG Chunjing1a ; YU Haitao1d
Chinese Journal of Cancer Biotherapy 2024;31(7):681-686
[摘 要] 目的:探讨解偶联蛋白2(UCP2)抑制剂京尼平(GEN)对人下咽癌FaDu细胞增殖及线粒体功能的影响。方法:使用不同浓度的GEN作用于FaDu细胞24 h,实验分为GEN 0(对照)、50、100、200和400 μmol/L组。采用CCK-8法检测各组细胞增殖能力,DCFH-DA探针及JC-1染色联合流式细胞术检测GEN对FaDu细胞活性氧(ROS)含量及线粒体膜电位的影响,激光共聚焦显微镜观察GEN对FaDu细胞线粒体膜通透性转换孔的影响,可见分光光度法检测细胞中乳酸的含量,WB法检测细胞中UCP2蛋白的表达变化。结果:与对照组相比,GEN可显著抑制FaDu细胞的增殖活力(P<0.05或P<0.01)、细胞中UCP2蛋白的表达(P<0.05),降低线粒体膜电位(P<0.05或P<0.01)、乳酸含量(P<0.000 1),改变细胞线粒体膜孔道通透性,提高细胞中ROS水平(P<0.05或P<0.01)。结论:GEN通过调节细胞中UCP2的表达水平进而影响细胞的氧化还原能力及线粒体功能,从而发挥抑制人下咽癌FaDu细胞增殖并诱导细胞凋亡的作用。
6.Phillyrin inhibits the malignant biolgical behaviors of colon cancer LS180 cells through activation of the Hippo/YAP signaling pathway
ZHENG Chengfua ; ZHOU Guifenga ; LI Qingb ; CHEN Yinga
Chinese Journal of Cancer Biotherapy 2024;31(6):566-572
[摘 要] 目的:探究连翘苷(Phi)通过调控Hippo/YAP信号通路对结肠癌LS180细胞增殖、迁移和侵袭的影响。方法:用不同浓度(0、5、10、20、40、80 µmol/L)的Phi处理人结肠癌LS180细胞,MTT法检测24、48 和72 h时的细胞活力。将LS180细胞分为对照组、Phi-L(5 µmol/L Phi)组、Phi-M(10 µmol/L Phi)组、Phi-H(20 µmol/L Phi)组、Phi-H+YAP抑制剂维替泊芬(VP)组(20 µmol/L Phi+5 µmol/L VP),各组均处理24 h。EdU法检测Phi对各组细胞增殖的影响,划痕愈合实验、Transwell小室法分别检测Phi对细胞迁移和侵袭的影响,免疫荧光法和WB法检测Phi对细胞Ki-67表达率和LATS1、YAP和p-YAP、MMP-2、MMP-9、E-cadherin、N-cadherin表达的影响。构建LS180细胞移植瘤裸鼠模型,观察Phi对移植瘤体积和质量的影响,免疫荧光法和WB法检测移植瘤组织中Ki-67表达率和LATS1、YAP和p-YAP蛋白的表达水平。结果:与对照组比较,Phi-L、Phi-M和Phi-H组LS180细胞EdU阳性率、划痕愈合率、侵袭细胞数、Ki-67阳性率、MMP-2、MMP-9、N-cadherin表达均显著降低(均P<0.05),E-cadherin、LATS1和p-YAP/YAP表达均显著升高(均P<0.05);同时使用VP则部分逆转了Phi对LS180细胞增殖、迁移与侵袭的抑制作用(均P<0.05)。Phi显著抑制裸鼠移植瘤生长,与对照组比较,Phi组裸鼠移植瘤体积、质量和Ki-67阳性率均显著降低(均P<0.05),LATS1和p-YAP/YAP水平均显著升高(均P<0.05)。结论:Phi可能通过激活Hippo/YAP信号通路抑制结肠癌LS180细胞的恶性生物学行为。
7.Effects of Bushen Jianpi formula on farnesoid X receptor-mediated inhibition of hepatocellular carcinoma AH-130 cell-induced cachexia in rats and its underlying mechanism
FENG Siqia ; ZHONG Yia ; LI Shiyinga ; LI Yuna ; WU Zhonghuab ; TANG Xiaowenc ; ZHOU Zhangjiea ; WU Tingtinga
Chinese Journal of Cancer Biotherapy 2024;31(12):1204-1210
[摘 要] 目的:探讨补肾健脾方(BSJP)介导法尼醇X受体(FXR)抑制肝癌细胞AH-130诱导的癌性恶病质(CC)大鼠模型的作用及其机制。方法:腹腔注射AH-130细胞建立肝癌CC大鼠模型,实验分为空白对照组、模型对照组、FXR激动剂(CDCA)组、BSJP组和BSJP + CDCA组。建模后,用CDCA、BSJP连续治疗大鼠16 d,每周称量大鼠体质量。实验结束时开腹,取腹主动脉血、粪便及附睾、腹股沟和肩胛区棕色脂肪质量。采用液相色谱-质谱法(LC-MS)检测大鼠血清和粪便中胆汁酸组分及含量,WB、qPCR法检测大鼠空肠、棕色及白色脂肪组织中FXR、Wnt家族成员10b(Wnt10b)、β-连环蛋白(β-catenin)、解偶联蛋白1(UCP-1)的表达。结果:与空白对照组相比,模型对照组大鼠体质量明显降低(P < 0.01);与模型对照组相比,CDCA、BSJP、BSJP + CDCA组大鼠体质量均增加(均P < 0.01)。与空白对照组相比,模型对照组附睾、腹股沟和肩胛区域及总棕色脂肪质量均上升(均P < 0.05);与模型对照组相比,各治疗组大鼠附睾、腹股沟区、棕色脂肪质量均下降(均P < 0.05),而肩胛区棕色脂肪组织质量下降无差异(P > 0.05);各治疗组总棕色脂肪质量均显著下降(P < 0.05或P < 0.01)。LC-MS分析显示,各组大鼠血清及粪便中胆汁酸组成及含量均发生改变。qPCR、WB法结果证实,与模型组相比,BSJP和BSJP + CDCA可促进大鼠回肠、棕色脂肪及白色脂肪组织中FXR mRNA和蛋白表达升高(均P < 0.05),Wnt10b、β-catenin、UCP-1 mRNA和蛋白表达均下降(均P < 0.05)。结论:BSJP能够抑制肝癌AH-130细胞诱导的大鼠CC,并减轻由此引起的体质量下降和棕色脂肪组织的形成,其机制可能涉及调控FXR并通过抑制棕色脂肪中与Wnt通路相关的Wnt10b、β-catenin和UCP-1的表达来实现。
8.Progress of researches on molecular mechanisms underlying helminth infection-mediated type 1/2 host immune responses.
Chinese Journal of Schistosomiasis Control 2023;35(5):534-538
Helminth infections are widespread worldwide, and pose a serious threat to human health and animal husbandry development. Understanding of helminth-host interactions is critical to effective control and ultimate eradication of helminthiasis. Following host infections, helminth infections firstly initiate innate immune responses and then mediate adaptive immune responses. Type 1 immune responses are predominant at early stage of helminth infections, which mainly play anti-infective actions, and type 2 immune responses are predominant at late stage of infections, which are associated with helminth immune evasion and aggravation of tissue damages. This review summarizes the progress of researches on type 1/2 immune responses-associated signaling pathways mediated by helminth infections in hosts.
Animals
;
Humans
;
Helminthiasis
;
Helminths
;
Immunity, Innate
;
Signal Transduction
;
Host-Parasite Interactions
9.Study on the distribution of ABO blood group in patients with pancreatic cancer
Xiaoliang YANG ; Xiaoqin ZHOU ; Jing LI ; Xia ZHONG ; Kun WANG ; Xiaoyan TANG ; Xing GU
Chinese Journal of Blood Transfusion 2023;36(2):152-155
【Objective】 To investigate whether there is a correlation between the differences in ABO blood group distribution in patients with pancreatic cancer, and to evaluate the relative risk. 【Methods】 Patients with pathological diagnosis or discharge diagnosis of pancreatic cancer who underwent ABO blood group typing in our hospital from January 2017 to October 2021 were selected, and the blood group distribution of patients and the correlation were analyzed. 【Results】 There was a statistically significant difference between the pancreatic cancer group and the control group (P<0.05). The study showed that type A may be a relative risk factor for pancreatic cancer patients (χ2=42.44, P<0.001), and type B may play a protective role (χ2=16.28, P<0.01). Significant differences were found in distribution between different gender groups (χ2=64.35, P<0.05). The test results showed that type A may be a risk factor for pancreatic cancer in men (χ2=35.2, OR=1.7, 95%CI=0.59-1.02, P<0.001), and type O may play a protective role in pancreatic cancer(χ2=18.22, OR=0.6, 95%CI=0.25-0.32, P<0.01); type A may be a relative risk factor for female pancreatic cancer patients (χ2=7.06, OR=1.4, 95%CI=0.59-1.02, P<0.001), while type B may play a protective role (χ2=20.32, OR=0.5, 95%CI=0.32-0.43, P<0.01). In pancreatic cancer group, the risk factors of blood type A were higher than those of non-A group, and the protective effect of type B was significantly higher than that of non-B group. 【Conclusion】 The distribution of blood group and relative risk factors in pancreatic cancer patients suggest that A type is predominant; in the population with A blood group, more attention should be paid to early prevention and early treatment, so as to reduce the risk of disease.
10.Construction of a MnO2/Crudlan composite hydrogel and its killing effect on melanoma B16-F10 cells combined with photothermal therapy
ZHANG Tinglin1a△ ; WU Lili1a△ ; WANG Yu ; ZHANG Zhuanzhuan3 ; ZHOU Xuan4 ; LI Meigui4 ; YAN Zhenzhen1b ; DING Xiuwen1a ; LU Songwei1c ; CHEN Cuimin1a ; LIANG Hao1a ; ZHANG Mengya1a ; GAO Jie
Chinese Journal of Cancer Biotherapy 2023;30(8):656-664
[摘 要] 目的:构建负载二氧化锰(MnO2)纳米颗粒的可得然(Cur)复合水凝胶MnO2@Cur(简称MGel),研究其对黑色素瘤B16-F10细胞的杀伤效果。方法:采用热诱导法制备Cur水凝胶(Gel),物理负载MnO2构建MGel,表征其宏观和微观形貌,检测其机械性能、降解性能以及光热转换性能等理化性能,并研究其联合PTT对小鼠皮肤黑色素瘤B16-F10细胞的光热杀伤效果。结果:MGel具有优异的机械和可降解性能,抗拉伸强度达(127.97±3.60)kPa、抗压缩强度达(151.44±5.23)kPa,28 d降解率约58.17%。MGel负载MnO2纳米片(粒径约180 nm)获得优异的光热转换性能,负载1.0 mg/mL MnO2的MGel在1.0 W/cm2的808 nm NIR光照4 min后到达最高温度50 ℃。细胞毒性实验和Calcein-AM/PI荧光双染色实验表明,MGel联合PTT有效杀伤B16-F10黑色素瘤细胞,NIR光照使得MGel组细胞存活率降低至(4.68±0.66)%(P<0.000 1)。结论:MGel复合水凝胶具备优异的机械性能、可降解性能以及光热转换性能,其联合PTT能有效杀伤肿瘤细胞,可能成为一种有效治疗黑色素瘤的新手段。

Result Analysis
Print
Save
E-mail