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1.
Nat Commun ; 14(1): 1351, 2023 03 11.
Artículo en Inglés | MEDLINE | ID: mdl-36906579

RESUMEN

Thyroid carcinoma (TC) is the most common malignancy of endocrine organs. The cell subpopulation in the lineage hierarchy that serves as cell of origin for the different TC histotypes is unknown. Human embryonic stem cells (hESCs) with appropriate in vitro stimulation undergo sequential differentiation into thyroid progenitor cells (TPCs-day 22), which maturate into thyrocytes (day 30). Here, we create follicular cell-derived TCs of all the different histotypes based on specific genomic alterations delivered by CRISPR-Cas9 in hESC-derived TPCs. Specifically, TPCs harboring BRAFV600E or NRASQ61R mutations generate papillary or follicular TC, respectively, whereas addition of TP53R248Q generate undifferentiated TCs. Of note, TCs arise by engineering TPCs, whereas mature thyrocytes have a very limited tumorigenic capacity. The same mutations result in teratocarcinomas when delivered in early differentiating hESCs. Tissue Inhibitor of Metalloproteinase 1 (TIMP1)/Matrix metallopeptidase 9 (MMP9)/Cluster of differentiation 44 (CD44) ternary complex, in cooperation with Kisspeptin receptor (KISS1R), is involved in TC initiation and progression. Increasing radioiodine uptake, KISS1R and TIMP1 targeting may represent a therapeutic adjuvant option for undifferentiated TCs.


Asunto(s)
Radioisótopos de Yodo , Neoplasias de la Tiroides , Humanos , Receptores de Kisspeptina-1/genética , Inhibidor Tisular de Metaloproteinasa-1/genética , Neoplasias de la Tiroides/genética , Células Madre Embrionarias , Proteínas Proto-Oncogénicas B-raf/genética , Mutación
2.
Genes (Basel) ; 13(7)2022 07 13.
Artículo en Inglés | MEDLINE | ID: mdl-35886018

RESUMEN

Differential genetically determined expression of transforming growth factor-ß (TGF-ß pathway and of vascular endothelial growth factor-A (VEGF-A) might modulate the molecular "milieu" involved in the etio-pathogenesis of non-melanoma skin cancer (NMSC). We have evaluated the frequency of some functionally relevant SNPs of TGF-ß and VEGF-A genes in 70 NMSC patients and 161 healthy controls, typed for TGF-ß1 rs1800471, TGF-ß2 rs900, TGF-ßR1 rs334348 and rs334349, TGF-ßR2 rs4522809 and VEGF-A rs3025039 SNPs. TGF-ßR2 rs1800629G allele and related genotypes were found to be associated with a possible protective role against NMSC, whereas VEGF-A rs3025039T was associated with an increased risk. To evaluate the effect of genotype combinations on NMSC susceptibility, we determined the frequencies of 31 pseudo-haplotypes due to non-random linkage among alleles of loci not lying on the same chromosome. Two pseudo-haplotypes that imply a minor allele of TGF-ßR2 or minor allele of VEGF-A SNPs combined with major alleles of the other SNPs were, respectively, associated with a protective effect, and susceptibility to NMSC. In addition, a pseudo-haplotype involving minor alleles of TGF-ß2 rs900, TGF-ßR1 rs334348 and rs4522809 SNPs might be a susceptibility marker for NMSC. In conclusion, our data suggest that a complex interplay among the genetic polymorphisms of TGF-ß, TGF-ß receptors and VEGF-A genes might influence the net effect of genetic background of the patients on NMSC development. This might be relevant in the risk evaluation, diagnosis and treatment of NMSC.


Asunto(s)
Predisposición Genética a la Enfermedad , Neoplasias Cutáneas , Factor de Crecimiento Transformador beta1/genética , Factor A de Crecimiento Endotelial Vascular/genética , Humanos , Polimorfismo de Nucleótido Simple/genética , Neoplasias Cutáneas/genética , Factor de Crecimiento Transformador beta2/genética
3.
Clin Drug Investig ; 42(6): 525-531, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35633470

RESUMEN

BACKGROUND AND OBJECTIVE: Biologics for psoriasis, especially anti-tumor necrosis factor-α therapies, may reactivate hepatitis B virus (HBV) or hepatitis C virus (HCV) infections, as well in inactive carriers or patients with occult infection. However, some biologics, including anti-interleukin-17 therapies such as secukinumab, seem to be less likely to cause hepatitis reactivation. This study assessed the safety of secukinumab treatment in patients with psoriasis with HBV or HBC infection. METHODS: This was a retrospective cohort study of patients with moderate-to-severe psoriasis treated with secukinumab at seven Italian centers. Patients serologically positive for one or more of the following viral hepatitis markers were included: HCV antibody (± HCV-RNA positivity) and/or hepatitis B surface antigen, and/or HBV core antibody and/or HBV surface antibody (± HBV-DNA positivity). Patients received secukinumab 300 mg subcutaneously at week 0/1/2/3/4 then every 4 weeks; prophylactic therapy before starting secukinumab was prescribed where indicated. The primary study endpoint was the reactivation of hepatitis viral infection, defined as conversion to HBV-DNA or HCV-RNA positivity, with or without elevation of transaminases. RESULTS: Sixty patients (17 with concomitant psoriatic arthritis) were included. Thirteen subjects were hepatitis B surface antigen positive, 19 were HBV core antibody positive, and 30 were positive for the HCV antibody; however, all were HCV-RNA negative. After 53.5 ± 37.5 weeks of secukinumab therapy, hepatitis reactivation occurred in only one patient, who had a reactivation of both hepatitis B and hepatitis C. This patient had not undergone hepatitis B prophylaxis or hepatitis C treatment before secukinumab. CONCLUSIONS: These real-world data support the safety of secukinumab in patients with positive markers of HBV or HCV infection, when administered together with dedicated prophylaxis.


In this retrospective cohort study, 60 patients with moderate-to-severe psoriasis were treated with secukinumab at seven Italian centers. Secukinumab is a fully human monoclonal antibody targeting interleukin-17A, a key cytokine associated with the development of psoriatic disease. All patients had markers of hepatitis B and/or C. Where appropriate, patients received prophylactic antiviral therapy before starting secukinumab at the standard dose for treating psoriasis in Italy. Secukinumab was administered at the labeled dose. After a mean duration treatment of 53.5 weeks, hepatitis reactivation (both B and C) occurred in one patient. This patient had not undergone hepatitis B prophylaxis or hepatitis C treatment before receiving secukinumab. The study is important, as some biologics for psoriasis, especially anti-tumor necrosis factor-α therapies, have been shown to reactivate both hepatitis B virus or hepatitis C virus infections in inactive carriers, patients with occult hepatitis B virus infection, or patients with hepatitis C virus infections. However, there is evidence that second-generation biologic therapies, including those with anti-interleukin-17 activity, are less likely to cause hepatitis reactivation. This study supports the safety of secukinumab treatment in patients with psoriasis with hepatitis B and/or C.


Asunto(s)
Productos Biológicos , Hepatitis B Crónica , Hepatitis B , Hepatitis C , Psoriasis , Anticuerpos Monoclonales Humanizados , Antivirales/uso terapéutico , Productos Biológicos/efectos adversos , ADN Viral , Hepacivirus/fisiología , Hepatitis B/inducido químicamente , Hepatitis B/diagnóstico , Hepatitis B/tratamiento farmacológico , Antígenos de Superficie de la Hepatitis B/farmacología , Antígenos de Superficie de la Hepatitis B/uso terapéutico , Virus de la Hepatitis B/fisiología , Hepatitis B Crónica/tratamiento farmacológico , Hepatitis C/tratamiento farmacológico , Humanos , Psoriasis/tratamiento farmacológico , ARN/farmacología , ARN/uso terapéutico , Estudios Retrospectivos , Activación Viral
4.
J Dermatolog Treat ; 33(5): 2629-2633, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35385362

RESUMEN

BACKGROUND: Some biologics for psoriasis, especially anti-tumor necrosis factor (TNF)-α therapies, may re-activate latent tuberculosis (TBC) infection with consequent morbidity and mortality. However, there is a low reported incidence of conversion to positive TBC status among patients with psoriasis treated with second-generation biologic therapies, particularly anti-interleukin (IL)-17 therapies such as secukinumab. OBJECTIVES: To evaluate the safety profile of secukinumab in psoriasis patients with latent TBC infection. METHODS: Real-life data were collected by retrospective chart review on patients with moderate-to-severe psoriasis who showed positivity for TBC screening at baseline and underwent secukinumab treatment for psoriasis at six Italian centers. Patients received secukinumab 300 mg at week 0/1/2/3/4, then every 4 weeks. RESULTS: Fifty-nine patients were enrolled; 30.5% also had psoriatic arthritis and other comorbidities were common. At baseline, the mean psoriasis duration was 14.5 years. Ten (17%) patients did not undergo prophylaxis before starting secukinumab. Conversely, isoniazid ± rifampicin or rifampicin alone prophylaxis was administered in 49/59 (83.1%) patients. After a mean treatment duration of 84 weeks, there were no cases of TBC reactivation and no unexpected safety signals. CONCLUSIONS: Secukinumab use over an extended period was safe in psoriasis patients with latent TBC, even in patients who did not receive chemoprophylaxis.


Asunto(s)
Tuberculosis Latente , Psoriasis , Tuberculosis , Anticuerpos Monoclonales Humanizados , Humanos , Isoniazida , Tuberculosis Latente/diagnóstico , Tuberculosis Latente/tratamiento farmacológico , Psoriasis/complicaciones , Psoriasis/tratamiento farmacológico , Psoriasis/patología , Estudios Retrospectivos , Rifampin/uso terapéutico , Índice de Severidad de la Enfermedad , Resultado del Tratamiento
5.
Oncogene ; 41(15): 2196-2209, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-35217791

RESUMEN

Breast cancer (BC) is the second cause of cancer-related deceases in the worldwide female population. Despite the successful treatment advances, 25% of BC develops resistance to current therapeutic regimens, thereby remaining a major hurdle for patient management. Current therapies, targeting the molecular events underpinning the adaptive resistance, still require effort to improve BC treatment. Using BC sphere cells (BCSphCs) as a model, here we showed that BC stem-like cells express high levels of Myc, which requires the presence of the multifunctional DNA/RNA binding protein Sam68 for the DNA-damage repair. Analysis of a cohort of BC patients displayed that Sam68 is an independent negative factor correlated with the progression of the disease. Genetic inhibition of Sam68 caused a defect in PARP-induced PAR chain synthesis upon DNA-damaging insults, resulting in cell death of TNBC cells. In contrast, BC stem-like cells were able to survive due to an upregulation of Rad51. Importantly, the inhibition of Rad51 showed synthetic lethal effect with the silencing of Sam68, hampering the cell viability of patient-derived BCSphCs and stabilizing the growth of tumor xenografts, including those TNBC carrying BRCA mutation. Moreover, the analysis of Myc, Sam68 and Rad51 expression demarcated a signature of a poor outcome in a large cohort of BC patients. Thus, our findings suggest the importance of targeting Sam68-PARP1 axis and Rad51 as potential therapeutic candidates to counteract the expansion of BC cells with an aggressive phenotype.


Asunto(s)
Proteínas Adaptadoras Transductoras de Señales , Neoplasias de la Mama , Proteínas de Unión al ADN , Proteínas de Unión al ARN , Recombinasa Rad51 , Neoplasias de la Mama Triple Negativas , Proteínas Adaptadoras Transductoras de Señales/genética , Proteínas Adaptadoras Transductoras de Señales/metabolismo , Neoplasias de la Mama/genética , Neoplasias de la Mama/patología , Proteínas de Ciclo Celular/genética , Línea Celular Tumoral , Reparación del ADN/genética , Proteínas de Unión al ADN/genética , Proteínas de Unión al ADN/metabolismo , Femenino , Humanos , Células Madre Neoplásicas/patología , Proteínas de Unión al ARN/genética , Proteínas de Unión al ARN/metabolismo , Recombinasa Rad51/genética , Recombinasa Rad51/metabolismo , Neoplasias de la Mama Triple Negativas/patología
6.
Cancers (Basel) ; 14(3)2022 Jan 28.
Artículo en Inglés | MEDLINE | ID: mdl-35158939

RESUMEN

Despite advances in the curative approach, the survival rate of advanced colorectal cancer (CRC) patients is still poor, which is likely due to the emergence of cancer cell clones resistant to the available therapeutic options. We have already shown that CD44v6-positive CRC stem cells (CR-CSCs) are refractory toward standard anti-tumor therapeutic agents due to the activation of the PI3K pathway together with high HER2 expression levels. Tumor microenvironmental cytokines confer resistance to CR-CSCs against HER2/PI3K targeting by enhancing activation of the MAPK pathway. Here, we show that the CSC compartment, spared by BRAF inhibitor-based targeted therapy, is associated with increased expression levels of CD44v6 and Myc and retains boosted clonogenic activity along with residual tumorigenic potential. Inhibition of Myc transcription, downstream of the MAPK cascade components, and PI3K pathway activity was able to overcome the protective effects of microenvironmental cytokines, affecting the survival and the clonogenic activity of CR-CSCs, regardless of their mutational background. Likewise, the double targeting induced stabilization of mouse tumor avatars. Altogether, these data outline the rationale for dual kinase targeting of CR-CSCs to prevent their adaptive response, which would lead to disease progression.

7.
Gut ; 71(1): 119-128, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-33436496

RESUMEN

OBJECTIVE: Cancer stem cells are responsible for tumour spreading and relapse. Human epidermal growth factor receptor 2 (HER2) expression is a negative prognostic factor in colorectal cancer (CRC) and a potential target in tumours carrying the gene amplification. Our aim was to define the expression of HER2 in colorectal cancer stem cells (CR-CSCs) and its possible role as therapeutic target in CRC resistant to anti- epidermal growth factor receptor (EGFR) therapy. DESIGN: A collection of primary sphere cell cultures obtained from 60 CRC specimens was used to generate CR-CSC mouse avatars to preclinically validate therapeutic options. We also made use of the ChIP-seq analysis for transcriptional evaluation of HER2 activation and global RNA-seq to identify the mechanisms underlying therapy resistance. RESULTS: Here we show that in CD44v6-positive CR-CSCs, high HER2 expression levels are associated with an activation of the phosphatidylinositol 3-kinase (PI3K)/AKT pathway, which promotes the acetylation at the regulatory elements of the Erbb2 gene. HER2 targeting in combination with phosphatidylinositol 3-kinase (PI3K) and mitogen-activated protein kinase kinase (MEK) inhibitors induces CR-CSC death and regression of tumour xenografts, including those carrying Kras and Pik3ca mutation. Requirement for the triple targeting is due to the presence of cancer-associated fibroblasts, which release cytokines able to confer CR-CSC resistance to PI3K/AKT inhibitors. In contrast, targeting of PI3K/AKT as monotherapy is sufficient to kill liver-disseminating CR-CSCs in a model of adjuvant therapy. CONCLUSIONS: While PI3K targeting kills liver-colonising CR-CSCs, the concomitant inhibition of PI3K, HER2 and MEK is required to induce regression of tumours resistant to anti-EGFR therapies. These data may provide a rationale for designing clinical trials in the adjuvant and metastatic setting.


Asunto(s)
Neoplasias Colorrectales/patología , Fosfatidilinositol 3-Quinasa/metabolismo , Inhibidores de las Quinasa Fosfoinosítidos-3/farmacología , Receptor ErbB-2/metabolismo , Animales , Antineoplásicos Inmunológicos/farmacología , Cetuximab/farmacología , Neoplasias Colorrectales/tratamiento farmacológico , Resistencia a Antineoplásicos , Humanos , Quinasas de Proteína Quinasa Activadas por Mitógenos/antagonistas & inhibidores , Células Madre Neoplásicas/metabolismo , Células Madre Neoplásicas/patología , Trastuzumab/farmacología , Células Tumorales Cultivadas
8.
Dermatology ; 238(3): 487-497, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34474409

RESUMEN

BACKGROUND: Hidradenitis suppurativa (HS) is a chronic, inflammatory, recurrent, debilitating skin disease of the hair follicle that usually occurs after puberty with painful, deep-seated, inflamed nodules and sinus tracts in the apocrine gland-bearing areas of the body, most commonly the axillae and inguinal and anogenital regions, with a relevant impact on patients' quality of life (QoL). OBJECTIVE: To evaluate how the burden of HS disease impacts on patient well-being and working activities in a large Italian population over a period of 9 months. METHODS: A multicenter, prospective, epidemiologic cohort study was conducted in adult Italian patients with HS. HS severity was assessed through Hurley stage and HS Physician's Global Assessment (HS-PGA), clinical improvement by HS Clinical Response (HiSCR) and partial response, and disease burden through QoL questionnaires (HIDRAdisk, Skindex-16, Dermatology Life Quality Index [DLQI]), and Work Productivity and Activity Impairment - General Health (WPAI:GH). RESULTS: A total of 308 patients (56.2% women; mean age 35.2 ± 12.9 years) were enrolled in 27 dermatologic clinics. Men were older (37.4 years vs. 33.5), more smoking addicted (74.1% vs. 60.1%), and alcohol consumer (34.1% vs. 13.9%), while more women were obese (34.10% vs. 22.22%). At baseline, most patients had a Hurley severity stage of 2 (43.9%), a moderate HS-PGA score (57.1%), and poor QoL (HIDRAdisk: 65.7 ± 23.3, Skindex-16: 60.3 ± 26.9, and DLQI: 10.8 ± 8.1). Patients with more severe disease showed worse QoL. Mean values for the variables related to HS severity decreased during the study period. The achievement of HiSCR and partial response increased during the study. CONCLUSION: This study offers insight into the disease burden of HS in an Italian population. Our results underline the impact of QoL evaluation, also with the use of the HIDRAdisk, in clinical routine as a support to validated severity clinical and instrumental indexes for a "360-degree" assessment of HS patient's burden of disease.


Asunto(s)
Hidradenitis Supurativa , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Estudios de Cohortes , Costo de Enfermedad , Hidradenitis Supurativa/epidemiología , Italia/epidemiología , Estudios Prospectivos , Calidad de Vida , Índice de Severidad de la Enfermedad
9.
Wien Med Wochenschr ; 172(5-6): 126-134, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-34185217

RESUMEN

BACKGROUND: It is generally acknowledged that the first morphological change of hidradenitis suppurativa/acne inversa (HS/AI) consists of infundibular plugging of the folliculosebaceous apocrine apparatus, which is followed by acute and chronic inflammation, cysts with sinus formation, and fibrosis. Alternatively, it has been hypothesized that HS/AI is primarily a neutrophilic autoinflammatory disease and that the follicular plugging typical of this disease is secondary to inflammation. OBJECTIVE: To review the sequence of the changes that mark the disease development, we have performed a histopathologic study on the surgical material from a series of axillary and inguinal/perineal cases. METHODS: The histologic material from surgery on Hurley's second and third stage HS/AI was retrieved and collected with the patients' clinical images. The virtually uninvolved skin peripheral to the lesions was studied together with the main inflammatory foci on vertical sections stained with hematoxylin-eosin and immunohistochemistry for the follicle sheaths. RESULTS: The fully developed lesions showed acute and chronic, suppurative and granulomatous inflammation overlapping fibrosis, cysts, and sinuses. Instead, the skin adjacent to florid inflammation showed plugging and dysmorphic alterations of the hair follicles associated with immunopathological changes of the inner root sheath keratin expression. CONCLUSION: Our observations coincide with the classical pathological studies on the progressive changes of HS/AI; however, in our specimens, the virtually normal skin peripheral to the fully developed lesions show seemingly initial follicular changes that suggest development error. This finding would support the hypothesis of combined mutation-induced epithelial differentiative defects and immunological derangement in HS/AI pathogenesis.


Asunto(s)
Hidradenitis Supurativa , Folículo Piloso/patología , Hidradenitis Supurativa/etiología , Hidradenitis Supurativa/patología , Humanos , Inmunohistoquímica , Inflamación/complicaciones , Piel/patología
10.
Front Cell Dev Biol ; 9: 690306, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34778245

RESUMEN

Metastatic disease represents the major cause of death in oncologic patients worldwide. Accumulating evidence have highlighted the relevance of a small population of cancer cells, named cancer stem cells (CSCs), in the resistance to therapies, as well as cancer recurrence and metastasis. Standard anti-cancer treatments are not always conclusively curative, posing an urgent need to discover new targets for an effective therapy. Kinases and phosphatases are implicated in many cellular processes, such as proliferation, differentiation and oncogenic transformation. These proteins are crucial regulators of intracellular signaling pathways mediating multiple cellular activities. Therefore, alterations in kinases and phosphatases functionality is a hallmark of cancer. Notwithstanding the role of kinases and phosphatases in cancer has been widely investigated, their aberrant activation in the compartment of CSCs is nowadays being explored as new potential Achille's heel to strike. Here, we provide a comprehensive overview of the major protein kinases and phosphatases pathways by which CSCs can evade normal physiological constraints on survival, growth, and invasion. Moreover, we discuss the potential of inhibitors of these proteins in counteracting CSCs expansion during cancer development and progression.

11.
Front Oncol ; 11: 702642, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34354950

RESUMEN

Despite the recent advances in cancer patient management and in the development of targeted therapies, systemic chemotherapy is currently used as a first-line treatment for many cancer types. After an initial partial response, patients become refractory to standard therapy fostering rapid tumor progression. Compelling evidence highlights that the resistance to chemotherapeutic regimens is a peculiarity of a subpopulation of cancer cells within tumor mass, known as cancer stem cells (CSCs). This cellular compartment is endowed with tumor-initiating and metastasis formation capabilities. CSC chemoresistance is sustained by a plethora of grow factors and cytokines released by neighboring tumor microenvironment (TME), which is mainly composed by adipocytes, cancer-associated fibroblasts (CAFs), immune and endothelial cells. TME strengthens CSC refractoriness to standard and targeted therapies by enhancing survival signaling pathways, DNA repair machinery, expression of drug efflux transporters and anti-apoptotic proteins. In the last years many efforts have been made to understand CSC-TME crosstalk and develop therapeutic strategy halting this interplay. Here, we report the combinatorial approaches, which perturb the interaction network between CSCs and the different component of TME.

12.
Nat Commun ; 12(1): 5006, 2021 08 18.
Artículo en Inglés | MEDLINE | ID: mdl-34408135

RESUMEN

Obesity is a strong risk factor for cancer progression, posing obesity-related cancer as one of the leading causes of death. Nevertheless, the molecular mechanisms that endow cancer cells with metastatic properties in patients affected by obesity remain unexplored.Here, we show that IL-6 and HGF, secreted by tumor neighboring visceral adipose stromal cells (V-ASCs), expand the metastatic colorectal (CR) cancer cell compartment (CD44v6 + ), which in turn secretes neurotrophins such as NGF and NT-3, and recruits adipose stem cells within tumor mass. Visceral adipose-derived factors promote vasculogenesis and the onset of metastatic dissemination by activation of STAT3, which inhibits miR-200a and enhances ZEB2 expression, effectively reprogramming CRC cells into a highly metastatic phenotype. Notably, obesity-associated tumor microenvironment provokes a transition in the transcriptomic expression profile of cells derived from the epithelial consensus molecular subtype (CMS2) CRC patients towards a mesenchymal subtype (CMS4). STAT3 pathway inhibition reduces ZEB2 expression and abrogates the metastatic growth sustained by adipose-released proteins. Together, our data suggest that targeting adipose factors in colorectal cancer patients with obesity may represent a therapeutic strategy for preventing metastatic disease.


Asunto(s)
Tejido Adiposo/citología , Reprogramación Celular , Neoplasias del Colon/fisiopatología , Células Madre Neoplásicas/citología , Nicho de Células Madre , Tejido Adiposo/metabolismo , Animales , Neoplasias del Colon/genética , Neoplasias del Colon/metabolismo , Neoplasias del Colon/patología , Factor de Crecimiento de Hepatocito/genética , Factor de Crecimiento de Hepatocito/metabolismo , Humanos , Interleucina-6/genética , Interleucina-6/metabolismo , Masculino , Ratones , Ratones SCID , MicroARNs/genética , MicroARNs/metabolismo , Metástasis de la Neoplasia , Células Madre/citología , Células Madre/metabolismo , Caja Homeótica 2 de Unión a E-Box con Dedos de Zinc/genética , Caja Homeótica 2 de Unión a E-Box con Dedos de Zinc/metabolismo
13.
Cancers (Basel) ; 13(16)2021 Aug 04.
Artículo en Inglés | MEDLINE | ID: mdl-34439086

RESUMEN

Colorectal cancer (CRC) mortality is mainly caused by patient refractoriness to common anti-cancer therapies and consequent metastasis formation. Besides, the notorious toxic side effects of chemotherapy are a concurrent obstacle to be tackled. Thus, new treatment approaches are needed to effectively improve patient outcomes. Compelling evidence demonstrated that cancer stem cells (CSCs) are responsible for treatment failure and relapse. New natural treatment approaches showed capabilities to selectively target the CSC subpopulation by rendering them targetable by standard cytotoxic compounds. Herein we show the anti-cancer properties of the polymethoxyflavones and prenylflavonoids extracted from Citrus sinensis and Humulus lupulus, respectively. The natural biofunctional fractions, singularly and in combination, reduced the cell viability of CRC stem cells (CR-CSCs) and synergized with 5-fluorouracil and oxaliplatin (FOX) chemotherapy. These phenomena were accompanied by a reduced S and G2/M phase of the cell cycle and upregulation of cell death-related genes. Notably, both phytoextracts in combination with FOX thwarted stemness features in CR-CSCs as demonstrated by the impaired clonogenic potential and decreased Wnt pathway activation. Extracts lowered the expression of CD44v6 and affected the expansion of metastatic CR-CSCs in patients refractory to chemotherapy. Together, this study highlights the importance of polymethoxyflavones and prenylflavonoids as natural remedies to aid oncological therapies.

15.
Expert Opin Biol Ther ; 21(2): 271-277, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33216643

RESUMEN

Background: The susceptibility of patients with chronic plaque psoriasis and the risks or benefits related to the use of biological therapies for COVID-19 are unknown. Few data about prevalence, clinical course and outcomes of COVID-19 among psoriatic patients were reported. The aims of this study were 1) to assess the prevalence and severity of COVID-19 in psoriatic patients treated with biologic agents during the first phase of the emergency (22 February to 22 April 2020) in Italy, and 2) to report the clinical outcomes of patients who have been exposed to individuals with confirmed SARS-CoV-2 infection. Methods: Patients with moderate-to-severe chronic plaque psoriasis, aged ≥18 years and undergoing treatment with biologic agents as of 22 February 2020, were eligible to be included in PSO-BIO-COVID study. Demographic and clinical characteristics of patients using any biologic for psoriasis treatment between 22 February and 22 April 2020 were registered. Results: A total of 12,807 psoriatic patients were included in the PSO-BIO-COVID study. In this cohort 26 patients (0.2%) had a swab confirmation of SARS-CoV-2 infection. Eleven patients required hospitalization and two died. Conclusion: The incidence of COVID-19 observed in our cohort of psoriatic patients (0.2%) is similar to that seen in the general population (0.31%) in Italy. However, the course of the disease was mild in most patients. Biological therapies may likely lessen 'cytokine storm' of COVID-19, which sometimes lead to multiple organ failure, ARDS, and death.


Asunto(s)
Productos Biológicos/uso terapéutico , Terapia Biológica/métodos , COVID-19/epidemiología , Psoriasis/tratamiento farmacológico , Adulto , Anciano , Anciano de 80 o más Años , Productos Biológicos/farmacología , COVID-19/diagnóstico , Enfermedad Crónica , Estudios de Cohortes , Femenino , Humanos , Incidencia , Interleucina-17/antagonistas & inhibidores , Italia/epidemiología , Masculino , Persona de Mediana Edad , Pandemias , Psoriasis/diagnóstico , Psoriasis/epidemiología , Receptores de Interleucina/antagonistas & inhibidores , Medición de Riesgo/métodos , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores , Adulto Joven
17.
Oncogene ; 39(5): 987-1003, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31591478

RESUMEN

Despite intense research and clinical efforts, patients affected by advanced colorectal cancer (CRC) have still a poor prognosis. The discovery of colorectal (CR) cancer stem cell (CSC) as the cell compartment responsible for tumor initiation and propagation may provide new opportunities for the development of new therapeutic strategies. Given the reduced sensitivity of CR-CSCs to chemotherapy and the ability of bone morphogenetic proteins (BMP) to promote colonic stem cell differentiation, we aimed to investigate whether an enhanced variant of BMP7 (BMP7v) could sensitize to chemotherapy-resistant CRC cells and tumors. Thirty-five primary human cultures enriched in CR-CSCs, including four from chemoresistant metastatic lesions, were used for in vitro studies and to generate CR-CSC-based mouse avatars to evaluate tumor growth and progression upon treatment with BMP7v alone or in combination with standard therapy or PI3K inhibitors. BMP7v treatment promotes CR-CSC differentiation and recapitulates the cell differentiation-related gene expression profile by suppressing Wnt pathway activity and reducing mesenchymal traits and survival of CR-CSCs. Moreover, in CR-CSC-based mouse avatars, BMP7v exerts an antiangiogenic effect and sensitizes tumor cells to standard chemotherapy regardless of the mutational, MSI, and CMS profiles. Of note, tumor harboring PIK3CA mutations were affected to a lower extent by the combination of BMP7v and chemotherapy. However, the addition of a PI3K inhibitor to the BMP7v-based combination potentiates PIK3CA-mutant tumor drug response and reduces the metastatic lesion size. These data suggest that BMP7v treatment may represent a useful antiangiogenic and prodifferentiation agent, which renders CSCs sensitive to both standard and targeted therapies.


Asunto(s)
Proteína Morfogenética Ósea 7/genética , Proteína Morfogenética Ósea 7/farmacología , Neoplasias Colorrectales/patología , Mutación , Animales , Antineoplásicos/farmacología , Diferenciación Celular/efectos de los fármacos , Línea Celular Tumoral , Neoplasias Colorrectales/tratamiento farmacológico , Humanos , Ratones , Células Madre Neoplásicas/efectos de los fármacos , Células Madre Neoplásicas/patología , Inhibidores de las Quinasa Fosfoinosítidos-3/farmacología , Ensayos Antitumor por Modelo de Xenoinjerto
18.
J Dermatolog Treat ; 29(sup1): 21-24, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30273068

RESUMEN

Nail involvement is frequent in patients with psoriasis, especially those with psoriatic arthritis (PsA), and can significantly impair quality of life (QoL). It is typically difficult to treat compared with skin lesions, although several conventional treatment options are available. The aim of this article is to describe our experience in the treatment of nail psoriasis with secukinumab in a case series. Fifteen patients (11 males and 4 females), with moderate-severe plaque psoriasis and nail psoriasis, eligible for systemic therapy, and received secukinumab. The Psoriasis Area and Severity Index (PASI) and body surface area (BSA) assessed cutaneous severity. Nail Psoriasis Severity Index (NAPSI) was used to evaluate nail involvement. Starting from 6 weeks after initiation of treatment with secukinumab 300 mg, a clinically significant response was observed, with progressive reduction of both skin and nail disease indexes. Average reduction of PASI was 75%, of BSA 70%, and of NAPSI 50%, at week 6. At week 12, NAPSI reduction was by 80%, of PASI 90%, and of BSA 97%. Effective treatment of both skin and nail psoriasis was obtained with secukinumab, a new approach to psoriatic patients resistant to topical therapy.


Asunto(s)
Anticuerpos Monoclonales/uso terapéutico , Enfermedades de la Uña/tratamiento farmacológico , Psoriasis/tratamiento farmacológico , Adulto , Anticuerpos Monoclonales Humanizados , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedades de la Uña/etiología , Psoriasis/complicaciones , Calidad de Vida , Índice de Severidad de la Enfermedad , Resultado del Tratamiento
19.
Recenti Prog Med ; 104(3): 102-5, 2013 Mar.
Artículo en Italiano | MEDLINE | ID: mdl-23548953

RESUMEN

The aim of this study was to assess the cardiovascular risk profile of patients with psoriasis compared to patients without psoriasis. A case-control assay was performed using 143 cases (psoriasis patients) and 104 controls (patients without psoriasis). We assessed the presence of hypertension, lipid profile (HDL, triglycerides), diabetes, and body mass index in both cases and controls. Psoriasis patients showed an unfavorable cardiovascular risk profile and a higher risk of cardiovascular events and metabolic syndrome than patients without psoriasis.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Psoriasis/epidemiología , Adulto , Anciano , Estudios de Casos y Controles , Comorbilidad , Diabetes Mellitus/epidemiología , Susceptibilidad a Enfermedades , Dislipidemias/epidemiología , Femenino , Humanos , Hipertensión/epidemiología , Inflamación/epidemiología , Masculino , Síndrome Metabólico/epidemiología , Persona de Mediana Edad , Obesidad/epidemiología , Estudios Retrospectivos , Riesgo , Fumar/epidemiología
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