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Diagnosis and management of postoperative wound infections in the head and neck region. 头颈部术后伤口感染的诊断和处理。
Pub Date : 2023-10-04 eCollection Date: 2023-01-01 DOI: 10.18632/oncoscience.589
Filip Barbarewicz, Kai-Olaf Henkel, Florian Dudde
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引用次数: 0
The mutational signatures of cancer: can passengers set a direction for prognosis? 癌症的突变特征:乘客能为预后设定方向吗?
Pub Date : 2023-10-02 eCollection Date: 2023-01-01 DOI: 10.18632/oncoscience.588
Peeter Karihtala
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引用次数: 0
Activity of pazopanib in EWSR1-NFATC2 translocation-associated bone sarcoma. 帕唑帕尼在EWSR1-NFATC2易位相关骨肉瘤中的活性。
Pub Date : 2023-09-20 eCollection Date: 2023-01-01 DOI: 10.18632/oncoscience.587
Mohamed A Gouda, Maria A Zarzour, Ara A Vaporciyan, Kalevi Kairemo, Hubert H Chuang, Vivek Subbiah

Pazopanib is a multi-kinase inhibitor that is currently approved for treatment of advanced renal cell carcinoma and chemotherapy-refractory soft tissue sarcoma. In this case report, we discuss the case of a patient with a EWSR1-NFATC2 fusion positive bone sarcoma who had exceptional tumor control through using pazopanib and surgery for an overall duration exceeding 5 years. We also review the literature on EWSR1-NFATC2 translocation-associated sarcomas and use of pazopanib in bone sarcomas.

帕唑帕尼是一种多激酶抑制剂,目前已被批准用于治疗晚期肾细胞癌和化疗难治性软组织肉瘤。在本病例报告中,我们讨论了一名EWSR1-NFATC2融合阳性骨肉瘤患者的病例,该患者通过使用帕唑帕尼和手术获得了特殊的肿瘤控制,总持续时间超过5年。我们还回顾了EWSR1-NFATC2易位相关肉瘤的文献以及帕唑帕尼在骨肉瘤中的应用。
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引用次数: 0
Multi-disciplinary management of recurrent gastrointestinal stromal tumor harboring KIT exon 11 mutation with the switch-control kinase inhibitor ripretinib and surgery. 应用开关控制激酶抑制剂瑞普替尼对携带KIT外显子11突变的复发性胃肠道间质瘤进行多学科治疗和手术。
Pub Date : 2023-09-20 eCollection Date: 2023-01-01 DOI: 10.18632/oncoscience.586
Mohamed A Gouda, Filip Janku, Neeta Somaiah, Kelly K Hunt, Sireesha Yedururi, Vivek Subbiah

Ripretinib is a tyrosine kinase inhibitor that was approved by the United States FDA in 2020 for treatment of advanced gastrointestinal stromal tumor (GIST) in patients who received prior treatment with three or more tyrosine kinase inhibitors. In this case report, we show the durable clinical benefit achieved in a patient with GIST by using ripretinib and repeated timely surgical resection of limited disease progression. The total time on ripretinib was 43 months which is longer than the current reported data from ripretinib clinical trials. Such approach for using multi-disciplinary disease management can improve the durability of response to tyrosine kinase inhibitors, including ripretinib, and associated clinical outcomes.

瑞普替尼是一种酪氨酸激酶抑制剂,于2020年被美国食品药品监督管理局批准用于治疗既往接受三种或多种酪氨酸激酶抑制剂治疗的晚期胃肠道间质瘤(GIST)患者。在本病例报告中,我们展示了通过使用瑞普替尼和对有限疾病进展进行反复及时手术切除,在GIST患者中获得的持久临床益处。使用瑞普替尼的总时间为43个月,比目前报道的瑞普替尼临床试验数据更长。这种使用多学科疾病管理的方法可以提高对酪氨酸激酶抑制剂(包括瑞普替尼)的反应的持久性和相关的临床结果。
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引用次数: 0
A CRISPR-p53 interactome with potential implications for clinical CRISPR/Cas9 use CRISPR-p53相互作用组对临床CRISPR/Cas9应用的潜在影响
Pub Date : 2022-05-09 DOI: 10.18632/oncoscience.557
Long Jiang, F. Wermeling
CRISPR/Cas9-based tools are anticipated to transform the gene therapy field by facilitating the correction of disease-causing mutations. However, CRISPR/Cas9 generates DNA damage, which triggers a DNA damage response centered around the tumor-suppressor p53. In this research perspective, we discuss implications of this and describe a CRISPR-p53 interactome with cancer-related genes that, if mutated, can give cells a selective advantage following exposure to CRISPR/Cas9. We propose that the genes in the CRISPR-p53 interactome should be monitored in the clinical setting and describe that transient p53 inhibition could be used to limit the enrichment of cells with such mutations.
基于CRISPR/ cas9的工具有望通过促进致病突变的纠正来改变基因治疗领域。然而,CRISPR/Cas9会产生DNA损伤,从而引发以肿瘤抑制因子p53为中心的DNA损伤反应。从这个研究的角度来看,我们讨论了这一点的含义,并描述了CRISPR-p53与癌症相关基因的相互作用组,如果发生突变,可以使细胞在暴露于CRISPR/Cas9后具有选择性优势。我们建议在临床环境中对CRISPR-p53相互作用组中的基因进行监测,并描述了短暂的p53抑制可用于限制具有此类突变的细胞的富集。
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引用次数: 0
HSP90 as an emerging barrier to immune checkpoint blockade therapy. HSP90作为免疫检查点阻断治疗的新屏障。
Pub Date : 2022-04-22 eCollection Date: 2022-01-01 DOI: 10.18632/oncoscience.554
Daolin Tang, Rui Kang

Immunotherapy, especially the use of immune checkpoint inhibitors, has improved overall survival in cancer patients. However, a large proportion of patients initially do not respond to treatment or relapse after a period of response. Heat shock protein 90 (HSP90) is a conserved molecular chaperone that promotes the maturation and folding of substrate proteins involved in many different cellular pathways. Our recent drug screen and functional assay identified HSP90 as a universal control of the protein stability of nuclear transcription factor STAT1 in a variety of different cancer cells, thereby promoting subsequent gene expression of immune checkpoint molecules (IDO1 and PD-L1). In vivo, we used different mouse models of pancreatic cancer and demonstrated that targeting HSP90 enhanced the efficacy of PD-1 blockade therapy. These findings establish HSP90 as a targetable vulnerability in immune therapy.

免疫疗法,特别是免疫检查点抑制剂的使用,提高了癌症患者的总生存率。然而,很大一部分患者最初对治疗没有反应或在一段时间后复发。热休克蛋白90 (HSP90)是一种保守的分子伴侣,它促进底物蛋白的成熟和折叠,参与许多不同的细胞途径。我们最近的药物筛选和功能分析发现,HSP90是多种不同癌细胞中核转录因子STAT1蛋白稳定性的普遍控制因子,从而促进免疫检查点分子(IDO1和PD-L1)的后续基因表达。在体内,我们使用不同的胰腺癌小鼠模型,证明靶向HSP90可增强PD-1阻断治疗的疗效。这些发现证实了HSP90在免疫治疗中是一个可靶向的易感性。
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引用次数: 0
Crosstalk between KIF15 and AR in castrate-resistant prostate cancers 去势抵抗性前列腺癌中KIF15和AR之间的串扰
Pub Date : 2022-04-22 DOI: 10.18632/oncoscience.556
Han Yang, Xuesen Dong
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引用次数: 0
Epigenetics and cancer disparities: when nature might be nurture 表观遗传学和癌症差异:先天可能是后天培养的
Pub Date : 2022-04-22 DOI: 10.18632/oncoscience.555
I. Jordan, K. K. Lee, J. McDonald, L. Mariño-Ramírez
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引用次数: 2
Towards the prevention of childhood leukemia 预防儿童白血病
Pub Date : 2022-04-21 DOI: 10.18632/oncoscience.553
K. Nichols, I. Sánchez-García
B-cell acute lymphoblastic leukemia (B-ALL) is the most common childhood cancer and leading cause of pediatric cancer death. In childhood B-ALL, a mutation (hereditary or de novo) leads to appearance of preleukemic cells that are capable of normal lymphoid differentiation; however, upon acquisition of one or more second hit mutations, these preleukemic cells transform into full-blown leukemic blasts. While identification of the specific events that trigger the malignant evolution of preleukemic cells has remained elusive in humans, it has long been hypothesized that (delayed) exposure to infection promotes an immune response that then spurs the acquisition of additional genetic lesions [1]. Recently, independent studies using different genetically predisposed mice have demonstrated the occurrence of such an infection-triggered leukemogenic mechanism, collectively showing that several types of stress in the immune system can promote clonal evolution of preleukemic cells in a significant proportion of mice [2–4]. Interestingly, the immune stress does not act by selecting a preleukemic clone that already harbors the second hit; on the contrary, the infection acts by promoting acquisition of the second hit itself, therefore leading to full-blown B-ALL [1]. Together, these observations support the idea that by eliminating preleukemic cells, childhood B-ALL might be preventable [1–5]. Nevertheless, it has remained unclear how to target preleukemic cells as a means to prevent the development of B-ALL. To address this question, we took advantage of the Pax5+/− mice [2, 4]. Similar to children who harbor heterzygous germline PAX5 mutations, B-ALL develops in up to 25% of Pax5+/− mice, but only when these animals experience an immune stress, such as exposure to infection [2]. The leukemias that develop in this model acquire various types of second hit mutations which resemble those observed in human B-ALL, including activating mutations affecting the Janus Kinases (JAKs) [2]. We previously observed that pro-B cells in Pax5+/− mice are particularly dependent on the cytokine interleukin-7 (IL-7) for their survival, and that blocking IL-7-induced signaling using the JAK1/2 inhibitor ruxolitnib led to increased cell death in vitro [2]. Based on these findings, we used Pax5+/− mice to explore whether treatment with Editorial
b细胞急性淋巴细胞白血病(B-ALL)是最常见的儿童癌症,也是儿童癌症死亡的主要原因。在儿童B-ALL中,突变(遗传或新生)导致能够正常淋巴细胞分化的白血病前细胞的出现;然而,一旦获得一个或多个秒击突变,这些白血病前细胞转化为成熟的白血病原细胞。虽然在人类中,引发白血病前细胞恶性进化的特定事件的鉴定仍然难以捉摸,但长期以来人们一直假设(延迟)暴露于感染会促进免疫反应,然后刺激获得额外的遗传病变[1]。最近,使用不同遗传易感小鼠的独立研究已经证明了这种感染触发的白血病发生机制的发生,共同表明免疫系统中几种类型的应激可以促进相当比例小鼠白血病前期细胞的克隆进化[2-4]。有趣的是,免疫压力不会通过选择一个已经有第二个攻击的白血病前克隆来起作用;相反,感染通过促进自身获得第二次打击而起作用,从而导致B-ALL的全面爆发[1]。总之,这些观察结果支持通过消除白血病前期细胞,儿童B-ALL可能是可以预防的[1-5]。然而,目前尚不清楚如何靶向白血病前细胞作为预防B-ALL发展的一种手段。为了解决这个问题,我们利用了Pax5+/−小鼠[2,4]。与携带杂合种系PAX5突变的儿童相似,高达25%的PAX5 +/ -小鼠发生B-ALL,但仅当这些动物经历免疫应激时,如暴露于感染[2]。在该模型中发生的白血病获得各种类型的二次撞击突变,这些突变与在人类B-ALL中观察到的相似,包括影响Janus激酶(JAKs)的激活突变[2]。我们之前观察到Pax5+/−小鼠的pro-B细胞特别依赖于细胞因子白介素-7 (IL-7)的生存,并且使用JAK1/2抑制剂ruxolitnib阻断IL-7诱导的信号传导导致体外细胞死亡增加[2]。基于这些发现,我们使用Pax5+/−小鼠来探索是否使用Editorial
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引用次数: 0
β-Galactosylceramidase in cancer: more than a psychosine scavenger 癌症中的β-半乳糖神经酰胺酶:不仅仅是一种精神病清除剂
Pub Date : 2022-03-23 DOI: 10.18632/oncoscience.551
M. Belleri, M. Presta
Sphingolipids, a class of compounds composed by a sphingoid base backbone, represent major components of biological membranes, and play a pivotal role in a variety of subcellular signaling processes. Abnormal sphingolipid metabolism sets the basis for the pathogenesis of variety of genetic diseases known collectively as sphingolipidosis, or sphingolipodystrophy. Among them, globoid cell leukodystrophy (also named Krabbe disease; OMIM #245200), is an autosomal recessive sphingolipidosis characterized by degeneration of oligodendroglia and progressive demyelination due to the genetic deficiency of β-galactosylceramidase (GALC; EC 3.2.1.46) [1], a lysosomal acid hydrolase that catalyzes the removal of β-galactose from β-galactosylceramide (GalCer) and other terminal β-galactose-containing sphingolipids. Based on a long-held and recently confirmed “psychosine hypothesis” [2], Krabbe disease may manifest as a consequence of the accumulation of the neurotoxic GALC substrate β-galactosylsphingosine (psychosine) in the central and peripheral nervous system [3]. Thus, most of the studies concerning the biological role of GALC have been performed on Krabbe patients and Galc-deficient twitcher mice (an authentic animal model of the disease [4]), leading to the envision that the major biological function of GALC may consist in its psychosine “scavenging” activity. However, experimental evidence indicates that GALC may act not only as a psychosine scavenger, but its modulation also exerting a series of psychosineindependent effects [5, 6]. For instance, GALC deficiency affects neovascularization in in vitro and in vivo in the presence of negligible, if any changes in psychosine levels [7, 8]. In addition, knock-down of the human GALC ortholog galcb in zebrafish embryos affects cell survival and neuronal differentiation in the absence of any significant accumulation of this metabolite [9]. In this frame, a recent study has shown that Galc knockdown in murine melanoma B16 cells causes a significant increase of the levels of the oncosuppressive sphingolipid ceramide mirrored by a decrease of sphingomyelins, phosphatidylethanolamines and cholesteryl esters, paralleled by an increased concentration of diacylglycerols [10]. These alterations of the lipidomic profile resulted in the inhibition of the tumorigenic activity of murine melanoma B16 cells. Increased levels of ceramide were observed also in GALC-silenced human melanoma A2058 cells and tumor xenografts, with a consequent decrease of their tumorigenic potential [10]. In keeping with these observations, a progressive increase of GALC expression occurs during tumor progression in human pathological skin specimens ranging from common nevi to stage IV melanoma. Again, the levels of GALC expression were inversely related to the levels of ceramide immunoreactivity in the same tumor samples [5, 10]. Together, these findings indicate that GALC might act as an oncogenic enzyme during melanoma progression by decreasin
鞘脂是一类由鞘碱骨架组成的化合物,是生物膜的主要成分,在多种亚细胞信号传导过程中起着关键作用。鞘脂代谢异常是多种遗传性疾病(统称为鞘脂病或鞘脂营养不良)发病机制的基础。其中,球状细胞白质营养不良(又称克拉伯病);OMIM #245200),是一种常染色体隐性鞘脂质病,其特征是少突胶质细胞变性和进行性脱髓鞘,是由于β-半乳糖神经酰胺酶(GALC;EC 3.2.1.46)[1],一种溶酶体酸水解酶,催化从β-半乳糖神经酰胺(GalCer)和其他末端含有β-半乳糖的鞘脂中去除β-半乳糖。基于一个长期存在且最近得到证实的“精神碱假说”[2],克拉伯病可能表现为神经毒性GALC底物β-半乳糖半胱氨酸(精神碱)在中枢和周围神经系统积累的结果[3]。因此,大多数关于GALC生物学作用的研究都是在Krabbe患者和GALC缺乏症抽搐小鼠(一种真正的疾病动物模型[4])身上进行的,导致人们设想GALC的主要生物学功能可能在于其精神“清除”活性。然而,实验证据表明GALC可能不仅仅是一种精神障碍清除剂,它的调节也发挥了一系列精神障碍无关的作用[5,6]。例如,GALC缺乏会影响体内和体外的新生血管形成,如果精神素水平有任何变化,则可以忽略不计[7,8]。此外,斑马鱼胚胎中与人类GALC同源的galcb的敲除会影响细胞存活和神经元分化,而这种代谢物没有任何显著的积累[9]。在这一框架下,最近的一项研究表明,在小鼠黑色素瘤B16细胞中,Galc敲低可导致抑制肿瘤的鞘脂神经酰胺水平显著增加,反映为鞘磷脂、磷脂酰乙醇胺和胆固醇酯的减少,并伴有二酰基甘油浓度的增加[10]。脂质组学谱的这些改变导致小鼠黑色素瘤B16细胞的致瘤活性受到抑制。在galc沉默的人黑色素瘤A2058细胞和肿瘤异种移植物中也观察到神经酰胺水平升高,从而降低其致瘤潜力[10]。与这些观察结果一致,从普通痣到IV期黑色素瘤,在人类病理皮肤标本的肿瘤进展过程中,GALC表达的逐渐增加。同样,在相同的肿瘤样本中,GALC表达水平与神经酰胺免疫反应性水平呈负相关[5,10]。总之,这些发现表明,GALC可能通过降低抑癌神经酰胺的水平,在黑色素瘤进展过程中作为一种致癌酶。这些数据也提出了在黑色素瘤中GALC活性和神经酰胺水平之间观察到的反比关系的机制问题。在这一框架下,我们观察到小鼠和人类黑色素瘤细胞中GALC的下调导致鞘磷脂磷酸二酯酶3 (Smpd3)的非冗余上调[10]。该基因编码中性鞘磷脂酶2,这是一种肿瘤抑制酶,可催化鞘磷脂水解形成磷脂胆碱和神经酰胺([11]及参考文献编辑)
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引用次数: 2
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Oncoscience
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