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Anti-Müllerian hormone (AMH) is produced and secreted by granulosa cells of growing follicles, and its main role is to inhibit the recruitment of primordial follicles, reduce the sensitivity of follicles to follicle-stimulating hormone (FSH), and regulate FSH-dependent preantral follicle growth. It has become an effective indicator of ovarian reserve in clinical practice. Research on AMH and its receptors in recent years has led to a better understanding of its role in breast cancer. AMH specifically binds to anti-Müllerian hormone receptor II (AMHRII) to activate downstream pathways and regulate gene transcription. Since AMHRII is expressed in breast cancer cells and triggers apoptosis, AMH/AMHRII may play an important role in the occurrence, treatment, and prognosis of breast cancer, which needs further research. The AMH level is a potent predictor of ovarian function after chemotherapy in premenopausal breast cancer patients older than 35 years, either for ovarian function injury or ovarian function recovery. Moreover, AMHRII has the potential to be a new marker for the molecular typing of breast cancer and a new target for breast cancer treatment, which may be a link in the downstream pathway after TP53 mutation.
Otolaryngology & Head and Neck Center, Cancer Center, Department of Head and Neck Surgery, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Otolaryngology & Head and Neck Center, Cancer Center, Department of Head and Neck Surgery, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Otolaryngology & Head and Neck Center, Cancer Center, Department of Head and Neck Surgery, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
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Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang, People’s Republic of China
Department of Thyroid and Breast Surgery, Zhejiang Provincial People’s Hospital Bijie Hospital, Bijie, Guizhou, China
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Anlotinib-mediated angiogenic remodeling was delineated in various tumors. Meanwhile, we previously showed that anlotinib inhibited tumor angiogenesis in anaplastic thyroid cancer (ATC). However, the potential role of anlotinib on cell lethality in ATC remains an enigma. Herein, we found that anlotinib inhibited the viability, proliferation, and migration of KHM-5M, C643, and 8505C cells in a dose-dependently manner. Under anlotinib treatment, PANoptosis (pyroptosis, apoptosis, and necroptosis) markers were not changed; however, ferroptosis targets (transferrin, HO-1, FTH1, FTL, and GPX4) were significantly downregulated. ROS levels also increased in a concentration-dependent manner after anlotinib treatment in KHM-5M, C643, and 8505C cells. In addition, protective autophagy was activated in response to anlotinib, and autophagic blockade potentiated anlotinib-mediated ferroptosis and antitumor effects in vitro and in vivo. Our new discovery identified autophagy-ferroptosis signaling pathway which provides mechanistic insight into anlotinib-mediated cell death, and synergistic combination therapy may help develop new ATC treatment strategies.
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Somatic copy number alterations (SCNA) involving either a whole chromosome or just one of the arms, or even smaller parts, have been described in about 88% of human tumors. This study investigated the SCNA profile in 40 well-characterized sporadic medullary thyroid carcinomas by comparative genomic hybridization array. We found that 26/40 (65%) cases had at least one SCNA. The prevalence of SCNA, and in particular of chromosome 3 and 10, was significantly higher in cases with a RET somatic mutation. Similarly, SCNA of chromosomes 3, 9, 10 and 16 were more frequent in cases with a worse outcome and an advanced disease. By the pathway enrichment analysis, we found a mutually exclusive distribution of biological pathways in metastatic, biochemically persistent and cured patients. In particular, we found gain of regions involved in the intracellular signaling and loss of regions involved in DNA repair and TP53 pathways in the group of metastatic patients. Gain of regions involved in the cell cycle and senescence were observed in patients with biochemical disease. Finally, gain of regions associated with the immune system and loss of regions involved in the apoptosis pathway were observed in cured patients suggesting a role of specific SCNA and corresponding altered pathways in the outcome of sporadic MTC.
Department of Radiology, Section of Nuclear Medicine, Leiden University Medical Center, Leiden, the Netherlands
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Department of Radiology, Section of Nuclear Medicine, Leiden University Medical Center, Leiden, the Netherlands
Biomedical Photonic Imaging Group, University of Twente, Enschede, the Netherlands
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Department of Radiology and Nuclear Medicine, Rijnstate Hospital, Arnhem, the Netherlands
Department of Biomedical Sciences and Humanitas Clinical and Research Centre, Department of Nuclear Medicine, Humanitas University, Milan, Italy
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Whole chromosome instability with near-whole genome haploidization (GH) and subsequent endoreduplication is considered a main genomic driver in the tumorigenesis of oncocytic cell thyroid neoplasms (OCN). These copy number alterations (CNA) occur less frequently in oncocytic thyroid adenoma (OA) than in oncocytic carcinoma (OCA), suggesting a continuous process. The current study described the CNA patterns in a cohort of 30 benign and malignant OCN, observed using a next-generation sequencing (NGS) panel that assesses genome-wide loss of heterozygosity (LOH) and chromosomal imbalances using 1500 single-nucleotide polymorphisms (SNPs) across all autosomes and the X chromosome in DNA derived from cytological and histological samples. Observed CNA patterns were verified using multiparameter DNA flow cytometry with or without whole-genome SNP array analysis and lesser-allele intensity-ratio (LAIR) analysis. On CNA–LOH analysis using the NGS panel, GH-type CNA were observed in 4 of 11 (36%) OA and in 14 of 16 OCA (88%). Endoreduplication was suspected in 8 of 16 (50%) OCA, all with more extensive GH-type CNA (P < 0.001). Reciprocal chromosomal imbalance type CNA, characterized by (imbalanced) chromosomal copy number gains and associated with benign disease, were observed in 6 of 11 (55%) OA and one equivocal case of OCA. CNA patterns were different between the histopathological subgroups (P < 0.001). By applying the structured interpretation and considerations provided by the current study, CNA–LOH analysis using an NGS panel that is feasible for daily practice may be of great added value to the widespread application of molecular diagnostics in the diagnosis and risk stratification of OCN.
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Many clinical and experimental studies have implicated the growth hormone (GH)–insulin-like growth factor (IGF-1) axis with the progression of cancer. The epidemiological finding that patients with Laron syndrome (LS), the best-characterized disease under the spectrum of congenital IGF-1 deficiencies, do not develop cancer is of major scientific and translational relevance. The evasion of LS patients from cancer emphasizes the central role of the GH–IGF-1 system in cancer biology. To identify genes that are differentially expressed in LS and that might provide a biological foundation for cancer protection, we have recently conducted genome-wide profiling of LS patients and normal controls. Analyses were performed on immortalized lymphoblastoid cell lines derived from individual patients. Bioinformatic analyses identified a series of genes that are either over- or under-represented in LS. Differential expression was demonstrated in a number of gene families, including cell cycle, metabolic control, cytokine–cytokine receptor interaction, Jak-STAT and PI3K-AKT signaling, etc. Major differences between LS and controls were also noticed in pathways associated with cell cycle distribution, apoptosis, and autophagy. The identification of novel downstream targets of the GH–IGF-1 network highlights the biological complexity of this hormonal system and sheds light on previously unrecognized mechanistic aspects associated with GH–IGF-1 action in the cancer cell.
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Prostate cancer (CaP) remains the second leading cause of cancer-related mortality in American men. Systemic treatments for metastatic CaP, which causes the majority of deaths, include androgen deprivation therapy and chemotherapy. These treatments induce remissions but do not cure CaP. Novel and functionally diverse therapeutic targets that control the cell biology that drives aggressive CaP progression are needed to overcome treatment resistance. Because signal transduction that mediates CaP cell behavior is tightly regulated by phosphorylation, kinases have attracted interest as alternative targets for CaP treatments. Here, we examine emerging evidence from recent NextGen sequencing and (phospho) proteomics analyses on clinical CaP specimens that were obtained during lethal disease progression to determine the role of deregulated kinase action in CaP growth, treatment resistance, and recurrence. We provide an overview of kinases that are impacted by gene amplification, gene deletion or somatic mutations during the progression from localized treatment-naïve CaP to metastatic castration-resistant CaP or neuroendocrine CaP, and the potential impact of such alterations on aggressive CaP behavior and treatment efficacy. Furthermore, we review knowledge on alterations in the phosphoproteome that occur during the progression to treatment-resistant CaP, the molecular mechanisms in the control of these changes, and the signal transduction associated with them. Finally, we discuss kinase inhibitors under evaluation in CaP clinical trials and the potential, challenges, and limitations to moving knowledge on the CaP kinome forward to new therapeutic strategies.
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Pancreatic neuroendocrine neoplasms (panNENs) are rare relatively malignancies that, despite their frequently slow-growing pattern, have the ability to metastasize. Metastatic and/or advanced insulinomas and glucagonomas are functioning panNENs emerging from the pancreas displaying unique peculiarities, depending on their hormonal syndromes and increased malignant potential. Advanced insulinomas management follows usually the panNENs therapeutic algorithm, but some distinctions are well advised together with aiming to control hypoglycemias that occasionally can be severe and refractory to treatment. When first-generation somatostatin analogues (SSAs) fail to control hypoglycemia syndrome, second-generation SSAs and everolimus have to be considered for exploiting their hyperglycemic effect. There is evidence that everolimus is still effective after rechallenge retaining its hypoglycemic effect independently of its antitumor effect that seems to be mediated by different molecular pathways. Peptide receptor radionuclide therapy (PRRT) constitutes a promising therapeutic option for both its antisecretory and antitumoral action. Similarly, advanced and/or metastatic glucagonomas management also follows the panNENs therapeutic algorithm, but the clinical syndrome has to be addressed by aminoacid infusion and by first-generation SSAs to improve the patient performance status. PRRT seems to be an effective treatment when surgery and SSAs fail. The application of these therapeutic modalities has been shown to be efficacious in controlling the manifestations of the secretory syndrome and prolonging the overall survival of patients suffering from these malignancies.
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Molecular and Cellular Biology Program, Ohio University, Athens, Ohio, USA
Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
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Despite landmark advances in cancer treatments over the last 20 years, cancer remains the second highest cause of death worldwide, much ascribed to intrinsic and acquired resistance to the available therapeutic options. In this review, we address this impending issue, by focusing the spotlight on the rapidly emerging role of growth hormone action mediated by two intimately related tumoral growth factors – growth hormone (GH) and insulin-like growth factor 1 (IGF1). Here, we not only catalog the scientific evidences relating specifically to cancer therapy resistance inflicted by GH and IGF1 but also discuss the pitfalls, merits, outstanding questions and the future need of exploiting GH–IGF1 inhibition to tackle cancer treatment successfully.
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Radioiodine treatment is a fundamental therapy for patients with papillary thyroid cancer (PTC). Sodium/iodide symporter (NIS)-mediated iodine uptake is a prerequisite for the efficacy of radioiodine therapy. Interleukin-6 (IL-6) is a pro-tumor cytokine, but its regulation of NIS expression in PTC has not been elucidated. In this study, we found that IL-6 enhanced the proliferation ability of PTC cells. Moreover, the negative association between IL-6 and NIS expression in thyroid cancer tissues was demonstrated. IL-6 downregulated thyroid-specific genes such as NIS, thyroid peroxidase, and thyroid-stimulating hormone receptor and thyroid-specific transcription factors including thyroid transcription factor-1 (TTF-1) and paired box protein-8 (PAX-8). The inhibitory effects of IL-6 on NIS expression were alleviated by mitogen-activated protein kinase and Janus kinase inhibitors. Depletion of c-Jun or STAT3 also rescued IL-6-induced NIS downregulation, with STAT3 depletion exerting a stronger effect. TTF-1 protein expression was also restored by depleting c-Jun or STAT3. STAT3 depletion, but not c-Jun depletion, alleviated the inhibitory effect of IL-6 on PAX-8 expression. Moreover, the downregulation of NIS by IL-6 was rescued by overexpressing TTF-1 and PAX-8. Tocilizumab, an IL-6 receptor blocker, did not have any cytostatic activity in PTC cells, and it also failed to induce redifferentiation in vitro. However, we found that the drug blocked the inhibitory effect of IL-6 on NIS expression. In summary, IL-6 inhibits NIS transcription in PTC cells by activating mitogen-activated protein kinase and Janus kinase signaling.
Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
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Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA
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Graphical abstract
Abstract
Lymphangioleiomyomatosis (LAM) is a cystic lung disease found almost exclusively in genetic females and caused by small clusters of smooth muscle cell tumors containing mutations in one of the two tuberous sclerosis genes (TSC1 or TSC2). Significant advances over the past 2–3 decades have allowed researchers and clinicians to more clearly understand the pathophysiology of LAM, and therefore better diagnose and treat patients with this disease. Despite substantial progress, only one proven treatment for LAM is used in practice: mechanistic target of rapamycin complex 1 (mTORC1) inhibition with medications such as sirolimus. While mTORC1 inhibition effectively slows LAM progression in many patients, it is not curative, is not effective in all patients, and can be associated with significant side effects. Furthermore, the presence of established and accurate biomarkers to follow LAM progression is limited. That said, discovering additional diagnostic and treatment options for LAM is paramount. This review will describe recent advances in LAM research, centering on the origin and nature of the LAM cell, the role of estrogen in LAM progression, the significance of melanocytic marker expression in LAM cells, and the potential roles of the microenvironment in promoting LAM tumor growth. By appreciating these processes in more detail, researchers and caregivers may be afforded novel approaches to aid in the treatment of patients with LAM.