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1.
Implement Sci Commun ; 5(1): 108, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-39354649

RESUMO

BACKGROUND: Electronic Prospective Surveillance Models (ePSMs) remotely monitor the rehabilitation needs of people with cancer via patient-reported outcomes at pre-defined time points during cancer care and deliver support, including links to self-management education and community programs, and recommendations for further clinical screening and rehabilitation referrals. Previous guidance on implementing ePSMs lacks sufficient detail on approaches to select implementation strategies for these systems. The purpose of this article is to describe how we developed an implementation plan for REACH, an ePSM system designed for breast, colorectal, lymphoma, and head and neck cancers. METHODS: Implementation Mapping guided the process of developing the implementation plan. We integrated findings from a scoping review and qualitative study our team conducted to identify determinants to implementation, implementation actors and actions, and relevant outcomes. Determinants were categorized using the Consolidated Framework for Implementation Research (CFIR), and the implementation outcomes taxonomy guided the identification of outcomes. Next, determinants were mapped to the Expert Recommendations for Implementing Change (ERIC) taxonomy of strategies using the CFIR-ERIC Matching Tool. The list of strategies produced was refined through discussion amongst our team and feedback from knowledge users considering each strategy's feasibility and importance rating via the Go-Zone plot, feasibility and applicability to the clinical contexts, and use among other ePSMs reported in our scoping review. RESULTS: Of the 39 CFIR constructs, 22 were identified as relevant determinants. Clinic managers, information technology teams, and healthcare providers with key roles in patient education were identified as important actors. The CFIR-ERIC Matching Tool resulted in 50 strategies with Level 1 endorsement and 13 strategies with Level 2 endorsement. The final list of strategies included 1) purposefully re-examine the implementation, 2) tailor strategies, 3) change record systems, 4) conduct educational meetings, 5) distribute educational materials, 6) intervene with patients to enhance uptake and adherence, 7) centralize technical assistance, and 8) use advisory boards and workgroups. CONCLUSION: We present a generalizable method that incorporates steps from Implementation Mapping, engages various knowledge users, and leverages implementation science frameworks to facilitate the development of an implementation strategy. An evaluation of implementation success using the implementation outcomes framework is underway.

2.
BMJ Open ; 14(9): e090449, 2024 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-39306347

RESUMO

INTRODUCTION: An electronic prospective surveillance model (ePSM) uses patient-reported outcomes to monitor impairments along the cancer pathway for timely management. Randomised controlled trials show that ePSMs can effectively manage cancer-related impairments. However, ePSMs are not routinely embedded into practice and evidence-based approaches to implement them are limited. As such, we developed and implemented an ePSM, called REACH, across four Canadian centres. The objective of this study is to evaluate the impact and quality of the implementation of REACH and explore implementation barriers and facilitators. METHODS AND ANALYSIS: We will conduct a 16-month formative evaluation, using a single-arm mixed methods design to routinely monitor key implementation outcomes, identify barriers and adapt the implementation plan as required. Adult (≥18 years) breast, colorectal, lymphoma or head and neck cancer survivors will be eligible to register for REACH. Enrolled patients complete brief assessments of impairments over the course of their treatment and up to 2 years post-treatment and are provided with a personalised library of self-management education, community programmes and when necessary, suggested referrals to rehabilitation services. A multifaceted implementation plan will be used to implement REACH within each clinical context. We will assess several implementation outcomes including reach, acceptability, feasibility, appropriateness, fidelity, cost and sustainability. Quantitative implementation data will be collected using system usage data and evaluation surveys completed by patient participants. Qualitative data will be collected through focus groups with patient participants and interviews with clinical leadership and management, and analysis will be guided by the Consolidated Framework for Implementation Research. ETHICS AND DISSEMINATION: Site-specific ethics approvals were obtained. The results from this study will be presented at academic conferences and published in peer-reviewed journals. Additionally, knowledge translation materials will be co-designed with patient partners and will be disseminated to diverse knowledge users with support from our national and community partners.


Assuntos
Neoplasias , Humanos , Neoplasias/reabilitação , Canadá , Estudos Prospectivos , Medidas de Resultados Relatados pelo Paciente , Sobreviventes de Câncer , Projetos de Pesquisa
3.
Exp Hematol ; 138: 104282, 2024 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-39032857

RESUMO

We and others have previously shown that TAZ plays a tumor suppressive role in multiple myeloma. However, recent reports suggest that molecular crosstalk between the myeloma cells and bone marrow stromal components contributes to the myeloma cell survival and drug resistance. These reports further point to reciprocal interaction via adhesion molecules as the most prominent mechanism of intercellular crosstalk between myeloma cells and bone marrow mesenchymal stromal cells (BM-MSCs). YAP/TAZ silencing/expression has been shown to correlate across all cancers with a set of adhesion/extracellular matrix proteins. Therefore, we hypothesized that TAZ may regulate myeloma cell interaction with BM stromal cells by influencing the expression of distinct cell adhesion signatures. We used previously established TAZ myeloma cell line models, including DELTA47-pLENTI or TAZ knockout DELTA47 cells cocultured with or without BM-MSCs, as our study models. Using RNA sequencing analysis, we performed the first comprehensive screen for cell adhesion-related transcriptional targets of TAZ in multiple myeloma (MM). In doing so, we uncovered an enrichment of cell adhesion-related genes in TAZ knockout DELTA47 cells relatively to pLENTI-DELTA47 cells, including 11 genes with log2 fold change > 2 (p < 0.05), namely, ANXA1, ADGRL2, NCAM1, NCAM2, ADGRL3, CXADR, ALCAM, JAM2, KIRREL1, KIRREL2, and ADGRG7, suggesting possible relationship with TAZ. We validated ANXA1 as a bona fide target of TAZ in MM. We show that TAZ represses myeloma cell migration and interaction with BM-MSCs by transcriptionally downregulating ANXA1 expression via TEAD-dependent mechanism. Our data provide new insights into the understanding of the role of TAZ in the intercellular communication signals between myeloma cells and BM-MSCs. Our findings also suggest that ANXA1 represents a putative cell adhesion target to attenuate BM-MSC driven, tumor-promoting interaction with myeloma cells.


Assuntos
Anexina A1 , Comunicação Celular , Regulação para Baixo , Regulação Neoplásica da Expressão Gênica , Células-Tronco Mesenquimais , Mieloma Múltiplo , Proteínas com Motivo de Ligação a PDZ com Coativador Transcricional , Mieloma Múltiplo/patologia , Mieloma Múltiplo/metabolismo , Mieloma Múltiplo/genética , Humanos , Células-Tronco Mesenquimais/metabolismo , Células-Tronco Mesenquimais/patologia , Proteínas com Motivo de Ligação a PDZ com Coativador Transcricional/metabolismo , Linhagem Celular Tumoral , Anexina A1/genética , Anexina A1/metabolismo , Adesão Celular , Técnicas de Cocultura , Proteínas de Neoplasias/genética , Proteínas de Neoplasias/metabolismo , Proteínas de Neoplasias/biossíntese
4.
BMC Health Serv Res ; 24(1): 17, 2024 Jan 04.
Artigo em Inglês | MEDLINE | ID: mdl-38178095

RESUMO

BACKGROUND: An electronic Prospective Surveillance Model (ePSM) uses patient-reported outcomes to monitor symptoms along the cancer pathway for timely identification and treatment. Randomized controlled trials show that ePSMs can effectively manage treatment-related adverse effects. However, an understanding of optimal approaches for implementing these systems into routine cancer care is limited. This study aimed to identify barriers and facilitators prior to the implementation of an ePSM to inform the selection of implementation strategies. METHODS: A qualitative study using virtual focus groups and individual interviews was conducted with cancer survivors, oncology healthcare providers, and clinic leadership across four cancer centres in Canada. The Consolidated Framework for Implementation Research (CFIR) guided the interviews and analysis of barriers and facilitators based on five domains (intervention characteristics, individual characteristics, inner setting, outer setting, and process). RESULTS: We conducted 13 focus groups and nine individual interviews with 13 patient participants and 56 clinic staff. Of the 39 CFIR constructs, 18 were identified as relevant determinants to the implementation. The adaptability, relative advantage, and complexity of an ePSM emerged as key intervention-level factors that could influence implementation. Knowledge of the system was important at the individual level. Within the inner setting, major determinants were the potential fit of an ePSM with clinical workflows (compatibility) and the resources that could be dedicated to the implementation effort (readiness for implementation). In the outer setting, meeting the needs of patients and the availability of rehabilitation supports were key determinants. Engaging various stakeholders was critical at the process level. CONCLUSIONS: Improving the implementation of ePSMs in routine cancer care has the potential to facilitate early identification and management of treatment-related adverse effects, thereby improving quality of life. This study provides insight into important factors that may influence the implementation of an ePSM, which can be used to select appropriate implementation strategies to address these factors.


Assuntos
Neoplasias , Atenção Primária à Saúde , Humanos , Estudos Prospectivos , Qualidade de Vida , Pesquisa Qualitativa , Eletrônica
5.
Cancer Rep (Hoboken) ; 6(10): e1879, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37539777

RESUMO

BACKGROUND: Oxidative stress within the bone marrow niche of multiple myeloma contributes to disease progression and drug resistance. Recent studies have associated the Hippo pathway with miRNA biogenesis and oxidative stress in solid tumors. Oxidative stress and miRNA pathway inter-relates in several cancers. Our group recently showed that TAZ functions as a tumor suppressor in MM. However, the role of TAZ in oxidative stress in MM is unknown. AIMS: We sought to examine the role of TAZ in myeloma cells' response to BM oxidative stress. We postulated that TAZ might be associated with an oxidative stress phenotype and distinct miRNA signature in MM. METHODS AND RESULTS: Using human myeloma cell lines and clinical samples, we demonstrate that TAZ promotes myeloma cells' sensitivity to oxidative stress and anticancer-induced cytotoxicity by inducing miR-224 to repress the NRF2 antioxidant program in MM. We show that low expression of TAZ protein confers an oxidative stress-resistant phenotype in MM. Furthermore, we provide evidence that overexpression of miR-224 in myeloma cells expressing low amounts of TAZ protein inhibits cell growth and enhances sensitivity to anti-myeloma therapeutics. CONCLUSION: Our findings uncover a potential role for TAZ in oxidative stress response in MM via the miR-224-NRF2 molecular pathway. This provides the scientific ground to explore miR-224 as a potential molecular target to modify TAZ expression and enhance myeloma sensitivity to treatment.


Assuntos
MicroRNAs , Mieloma Múltiplo , Humanos , Linhagem Celular Tumoral , Regulação Neoplásica da Expressão Gênica , MicroRNAs/genética , MicroRNAs/metabolismo , Mieloma Múltiplo/genética , Fator 2 Relacionado a NF-E2/genética , Estresse Oxidativo , Proteínas com Motivo de Ligação a PDZ com Coativador Transcricional/metabolismo
6.
Exp Hematol ; 123: 34-45, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37137439

RESUMO

We have previously reported that transcriptional activator with PDZ-binding motif (TAZ) functions as a tumor suppressor in multiple myeloma (MM). MST1 is a serine-threonine kinase upstream of the Hippo-signaling pathway that functions as a tumor suppressor in many non-hematologic malignancies. However, its role in hematologic malignancies, including MM is still poorly understood. In this article, we provide evidence that MST1 expression is higher in MM and negatively correlates with TAZ expression in both cell lines and patient samples. High MST1 expression was associated with poor clinical outcomes. Genetic or pharmacologic inhibition of MST1 leads to increased TAZ expression and cell death. Importantly, MST1 inhibitors sensitize myeloma cells to frontline antimyeloma agents-lenalidomide and dexamethasone. Taken together, our data reveal a key role for MST1 in MM pathogenesis and provide evidence to explore the therapeutic potential of using MST inhibitors to upregulate TAZ expression in MM to promote response to anticancer agents.


Assuntos
Mieloma Múltiplo , Transdução de Sinais , Humanos , Mieloma Múltiplo/tratamento farmacológico , Mieloma Múltiplo/genética , Proteínas Serina-Treonina Quinases/genética , Fatores de Transcrição/genética , Proteínas Supressoras de Tumor/genética , Proteínas com Motivo de Ligação a PDZ com Coativador Transcricional
7.
Implement Sci ; 18(1): 11, 2023 04 26.
Artigo em Inglês | MEDLINE | ID: mdl-37101231

RESUMO

BACKGROUND: Electronic prospective surveillance models (ePSMs) for cancer rehabilitation include routine monitoring of the development of treatment toxicities and impairments via electronic patient-reported outcomes. Implementing ePSMs to address the knowledge-to-practice gap between the high incidence of impairments and low uptake of rehabilitation services is a top priority in cancer care. METHODS: We conducted a scoping review to understand the state of the evidence concerning the implementation of ePSMs in oncology. Seven electronic databases were searched from inception to February 2021. All articles were screened and extracted by two independent reviewers. Data regarding the implementation strategies, outcomes, and determinants were extracted. The Expert Recommendations for Implementing Change taxonomy and the implementation outcomes taxonomy guided the synthesis of the implementation strategies and outcomes, respectively. The Consolidated Framework for Implementation Research guided the synthesis of determinants based on five domains (intervention characteristics, individual characteristics, inner setting, outer setting, and process). RESULTS: Of the 5122 records identified, 46 interventions met inclusion criteria. The common implementation strategies employed were "conduct educational meetings," "distribute educational materials," "change record systems," and "intervene with patients to enhance uptake and adherence." Feasibility and acceptability were the prominent outcomes used to assess implementation. The complexity, relative advantage, design quality, and packaging were major implementation determinants at the intervention level. Knowledge was key at the individual level. At the inner setting level, major determinants were the implementation climate and readiness for implementation. At the outer setting level, meeting the needs of patients was the primary determinant. Engaging various stakeholders was key at the process level. CONCLUSIONS: This review provides a comprehensive summary of what is known concerning the implementation of ePSMs. The results can inform future implementation and evaluation of ePSMs, including planning for key determinants, selecting implementation strategies, and considering outcomes alongside local contextual factors to guide the implementation process.


Assuntos
Eletrônica , Neoplasias , Humanos , Estudos Prospectivos , Neoplasias/terapia
9.
Nanomedicine (Lond) ; 16(24): 2175-2188, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34547916

RESUMO

Aim: Monitoring minimal residual disease remains a challenge to the effective medical management of hematological malignancies; yet surface-enhanced Raman spectroscopy (SERS) has emerged as a potential clinical tool to do so. Materials & methods: We developed a cell-free, label-free SERS approach using gold nanoparticles (nanoSERS) to classify hematological malignancies referenced against two control cohorts: healthy and noncancer cardiovascular disease. A predictive model was built using machine-learning algorithms to incorporate disease burden scores for patients under standard treatment upon. Results: Linear- and quadratic-discriminant analysis distinguished three cohorts with 69.8 and 71.4% accuracies, respectively. A predictive nanoSERS model correlated (MSE = 1.6) with established clinical parameters. Conclusion: This study offers a proof-of-concept for the noninvasive monitoring of disease progression, highlighting the potential to incorporate nanoSERS into translational medicine.


Cancer patient quality of life is achieved by reassurance from informed doctors using the best clinical tools. Confirming the earliest detection or absence of disease ensures treatment is timely and recovery optimal. Here we show the potential for a new tool to be developed to reassure patients and inform doctors. We examined the 'chemical fingerprints' (Raman spectroscopic profiling) of patient's blood, enhanced by gold nanoparticles with a double-referenced machine learning algorithm. Teaching a machine to learn as it works ensures it is improving how it finds clinically important features in the chemical fingerprint. This helps patients live more confidently with cancer or in cancer recovery. Eventually, once fully trained and translated into a real-world hospital application, this could improve patient outcomes and quality of life.


Assuntos
Neoplasias Hematológicas , Nanopartículas Metálicas , Análise Discriminante , Ouro , Humanos , Análise Espectral Raman
10.
Am J Hematol ; 96(5): 552-560, 2021 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-33650179

RESUMO

The MCRN-003/CCTGMYX.1 is a single arm phase II trial of weekly carfilzomib, cyclophosphamide and dexamethasone (wKCd), exploring a convenient immunomodulator (IMiD)-free regimen in relapsed myeloma. Weekly carfilzomib (20/70 mg/m2 ), dexamethasone 40 mg and cyclophosphamide 300 mg/m2 was delivered over 28-day cycles. The primary endpoint was overall response after four cycles. Secondary endpoints included toxicity, response depth, PFS and OS. Exploratory endpoints included the impact of cytogenetics, prior therapy exposure and serum free light chain (sFLC) escape; 76 patients were accrued. The ORR was 85% (68% ≥very good partial response [VGPR] and 29% ≥complete response [CR]). The median OS and PFS were 27 and 17 months respectively. High-risk cytogenetics conferred a worse ORR (75% vs. 97%, p = .013) and median OS (18 months vs. NR, p = .002) with a trend toward a worse median PFS (14 vs. 22 months, p = .06). Prior proteasome inhibitor (PI) or lenalidomide did not influence OS or PFS. The sFLC was noted in 15% of patients with a median PFS of 17 months when included as a progression event. The most common ≥ grade 3 non-hematologic adverse events were infectious (40%), vascular (17%) and cardiac (15%). The wKCD is a safe and effective regimen in relapse, especially for patients ineligible for lenalidomide-based therapies.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Mieloma Múltiplo/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Doenças Cardiovasculares/induzido quimicamente , Ciclofosfamida/administração & dosagem , Ciclofosfamida/efeitos adversos , Dexametasona/administração & dosagem , Dexametasona/efeitos adversos , Esquema de Medicação , Dispneia/induzido quimicamente , Feminino , Doenças Hematológicas/induzido quimicamente , Humanos , Infecções/etiologia , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Mieloma Múltiplo/genética , Proteínas do Mieloma/análise , Oligopeptídeos/administração & dosagem , Oligopeptídeos/efeitos adversos , Seleção de Pacientes , Prognóstico , Intervalo Livre de Progressão , Recidiva , Terapia de Salvação , Resultado do Tratamento
11.
Br J Haematol ; 193(3): 532-541, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33559897

RESUMO

Bortezomib-containing regimens (BCRs) represented standard, first-line therapy for transplant-ineligible multiple myeloma (TIMM) in Canada until the introduction of lenalidomide and low-dose dexamethasone (Ld). However, little comparative data exist to inform the selection of regimens. We assessed the outcomes for TIMM patients treated with cyclophosphamide, bortezomib and dexamethasone or prednisone (CyBorD/P), bortezomib, melphalan and prednisone (VMP), bortezomib and dexamethasone or prednisone (VD/P) and lenalidomide and low-dose dexamethasone (Ld) using the Canadian Myeloma Research Group database. Of 1156 TIMM patients evaluated, 82% received bortezomib combinations while 18% received Ld. Median progression-free survival (PFS) was 21·0, 21·1, 13·2 and 28·5 months (P = 0·0002) and median overall survival (OS) was 52·0, 63·6, 30·8 and 65·7 months (P < 0·0001) in the CyBorD/P, VMP, VD/P and Ld groups respectively. There was no significant difference in PFS and OS between the two triplet bortezomib regimens (VMP and CyBorD/P). Ld was associated with a longer PFS but not a significantly superior OS to date. Outcomes with the bortezomib-steroid doublet were inferior (VD/P). However, multivariable analysis identified features related to disease biology as the most important prognostic factors for PFS and OS. Such factors, as well as those affecting the physician's choice of regimen, are likely to influence the results observed with different regimens. This study demonstrated real-world outcomes in TIMM similar to those reported in clinical trials.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Bases de Dados Factuais , Mieloma Múltiplo/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Bortezomib/administração & dosagem , Canadá/epidemiologia , Dexametasona/administração & dosagem , Feminino , Seguimentos , Humanos , Lenalidomida/administração & dosagem , Masculino , Pessoa de Meia-Idade , Mieloma Múltiplo/mortalidade
12.
Front Immunol ; 11: 575609, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33304346

RESUMO

Innate immune surveillance of cancer involves multiple types of immune cells including the innate lymphoid cells (ILCs). Natural killer (NK) cells are considered the most active ILC subset for tumor elimination because of their ability to target infected and malignant cells without prior sensitization. NK cells are equipped with an array of activating and inhibitory receptors (IRs); hence NK cell activity is controlled by balanced signals between the activating and IRs. Multiple myeloma (MM) is a hematological malignancy that is known for its altered immune landscape. Despite improvements in therapeutic options for MM, this disease remains incurable. An emerging trend to improve clinical outcomes in MM involves harnessing the inherent ability of NK cells to kill malignant cells by recruiting NK cells and enhancing their cytotoxicity toward the malignant MM cells. Following the clinical success of blocking T cell IRs in multiple cancers, targeting NK cell IRs is drawing increasing attention. Relevant NK cell IRs that are attractive candidates for checkpoint blockades include KIRs, NKG2A, LAG-3, TIGIT, PD-1, and TIM-3 receptors. Investigating these NK cell IRs as pathogenic agents and therapeutic targets could lead to promising applications in MM therapy. This review describes the critical role of enhancing NK cell activity in MM and discusses the potential of blocking NK cell IRs as a future MM therapy.


Assuntos
Antineoplásicos Imunológicos/uso terapêutico , Citotoxicidade Imunológica/efeitos dos fármacos , Inibidores de Checkpoint Imunológico/uso terapêutico , Imunoterapia Adotiva , Células Matadoras Naturais/efeitos dos fármacos , Células Matadoras Naturais/transplante , Mieloma Múltiplo/tratamento farmacológico , Receptores de Células Matadoras Naturais/antagonistas & inibidores , Animais , Antineoplásicos Imunológicos/efeitos adversos , Humanos , Inibidores de Checkpoint Imunológico/efeitos adversos , Imunoterapia Adotiva/efeitos adversos , Células Matadoras Naturais/imunologia , Células Matadoras Naturais/metabolismo , Terapia de Alvo Molecular , Mieloma Múltiplo/imunologia , Mieloma Múltiplo/metabolismo , Mieloma Múltiplo/patologia , Receptores de Células Matadoras Naturais/metabolismo , Transdução de Sinais , Evasão Tumoral , Microambiente Tumoral
13.
J Nat Prod ; 83(12): 3526-3535, 2020 12 24.
Artigo em Inglês | MEDLINE | ID: mdl-33210536

RESUMO

Caffeic acid phenethyl ester (CAPE, 2), a natural compound from propolis, is a well-documented antitumor agent with nuclear factor kappa B (NF-κB) inhibitory activity. Key transcription factors regulated by NF-κB, namely, interferon regulatory factor-4 (IRF4) and octameric binding protein-2 (OCT2), are implicated in the tumorigenesis of multiple myeloma (MM), an incurable bone marrow cancer. Adverse effects and resistance to current chemotherapeutics pose a great challenge for MM treatment. Hence, the structure-activity relationships of CAPE (2) and 21 of its analogues were evaluated for their antimyeloma potential. Preclinical evaluation revealed that CAPE (2) and the 3-phenylpropyl (4), 2,5-dihydroxycinnamic acid 3-phenylpropyl ester (17), and 3,4-dihydroxycinnamic ether (22) analogues inhibited human myeloma cell growth. Analogue 4 surpassed CAPE (2) and lenalidomide in showing strong apoptotic effects with a remarkable decrease in IRF4 levels. The analogue 17 exhibited the most potent anti-MM activity. The downregulation of specificity protein 1 (Sp1) and the IKZF1-IRF4-MYC axis by CAPE (2) analogues 4 and 17 revealed their novel mechanism of action. The analogues showed no adverse cytotoxic effects on normal human cells and exhibited appropriate in silico pharmacokinetic properties and drug-likeness. These findings suggest the promising application of CAPE (2) analogues to target Ikaros (IKZF1)/IRF4 addiction, the so-called Achilles heel of myeloma, for better treatment outcomes.


Assuntos
Inibidores da Angiogênese/farmacologia , Ácidos Cafeicos/farmacologia , Regulação para Baixo , Genes myc , Fator de Transcrição Ikaros/metabolismo , Fatores Reguladores de Interferon/metabolismo , Mieloma Múltiplo/patologia , Álcool Feniletílico/análogos & derivados , Fator de Transcrição Sp1/metabolismo , Apoptose/efeitos dos fármacos , Ácidos Cafeicos/química , Linhagem Celular Tumoral , Humanos , Lenalidomida/farmacologia , Mieloma Múltiplo/metabolismo , Álcool Feniletílico/química , Álcool Feniletílico/farmacologia , Relação Estrutura-Atividade
14.
ESMO Open ; 5(2)2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32220948

RESUMO

OBJECTIVE: There are no validated approaches to predict benefit from adjuvant chemotherapy for resected patients with non-small-cell lung cancer (NSCLC). The aim of this study was to translate a 15-gene mRNA expression profile published by Zhu et al, shown to be prognostic and predictive of benefit, into a readily applicable immunohistochemistry (IHC) panel. METHODS: For seven of the genes in the gene expression profile (GEP) for which suitable commercial antibodies were available, we semiquantitatively assessed the IHC expression and prognostic significance for 173 patients treated at the Saint John Regional Hospital (SJRH). Cut-offs for high and low expression were defined for each marker and applied to IHC scores from 291 of the 482 patients in JBR.10, including patients on both the adjuvant chemotherapy and observation arms. The prognostic and predictive value of these markers on overall survival (OS) or recurrence-free survival (RFS) was assessed by Cox regression models. RESULTS: In the SJRH cohort, in 62 patients with resected stage II-III NSCLC, the prognostic significance of IHC assays for four proteins were concordant with Zhu's GEP results. Low FOSL2 (OS, HR=0.15; p=0.0001; RFS, HR=0.14; p<0.0001) and high STMN2 (RFS, HR=2.501; p=0.0197) were adverse prognostic factors. Low ATP1B1 and low TRIM14 expression trended toward worse OS and RFS. Validation of these markers with JBR.10 patients failed to show prognostic significance either individually or in combined risk classifications. Additionally, the interaction between these markers and chemotherapy treatment in predicting OS (FOSL2, p=0.52; STMN2 p=0.14; ATP1B1, p=0.33; TRIM14, p=0.81) or RFS (FOSL2, p=0.63; STMN2, p=0.12; ATP1B1, p=0.66; TRIM14, p=0.57) did not reach significance, individually or in combination panels. CONCLUSIONS: Zhu's GEP could not be translated into an IHC panel predictive of benefit from adjuvant chemotherapy. Future predictive biomarker analysis in the adjuvant NSCLC setting may need to focus on novel therapies.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Quimioterapia Adjuvante/métodos , Imuno-Histoquímica/métodos , Neoplasias Pulmonares/tratamento farmacológico , Transcriptoma/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico
15.
Blood Adv ; 3(22): 3613-3625, 2019 11 26.
Artigo em Inglês | MEDLINE | ID: mdl-31743393

RESUMO

Multiple myeloma (MM) is an incurable blood cancer that is often characterized by amplification and overexpression of the MYC oncogene. Despite efforts, direct targeting of MYC is not yet possible; therefore, alternative strategies to inhibit MYC activity are necessary. TAZ is a transcriptional coactivator downstream of the Hippo-signaling pathway that functions as an oncogene in many solid tumors. However, its role in hematological malignancies is largely unexplored. Here, we show that, in contrast to solid tumors, expression of TAZ is lower in hematological malignancies, and that high expression of TAZ correlates with better patient outcomes. We further show that TAZ is hypermethylated in MM patient samples and in a panel of MM cell lines. Genetic overexpression of TAZ or pharmacological upregulation of TAZ by treatment with the demethylating agent decitabine induces apoptosis. Importantly, TAZ-induced apoptosis is independent of canonical Hippo components LATS1 or the TEA-domain family of transcription factors. Instead, RNA-sequencing analysis revealed that overexpression of TAZ represses a MYC transcriptional program and we show that increased TAZ expression correlates with decreased MYC expression in both cell-line models and patient samples. Furthermore, promoter derepression of TAZ expression sensitizes MM cell lines through a reciprocal reduction in MYC expression using additional therapeutics such as bortezomib, trichostatin A, and panobinostat. Our findings uncover an unexpected role for TAZ in MM tumorigenesis and provide a compelling rationale for exploring the therapeutic potential of upregulating TAZ expression to restore sensitivity to specific therapeutics in MM.


Assuntos
Regulação Neoplásica da Expressão Gênica , Genes myc , Mieloma Múltiplo/genética , Mieloma Múltiplo/metabolismo , Fatores de Transcrição/metabolismo , Proteínas Supressoras de Tumor/metabolismo , Aciltransferases , Antineoplásicos/farmacologia , Antineoplásicos/uso terapêutico , Apoptose/genética , Linhagem Celular Tumoral , Proliferação de Células , Sobrevivência Celular/genética , Regulação para Baixo , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Mieloma Múltiplo/tratamento farmacológico , Mieloma Múltiplo/patologia , Prognóstico
16.
Leuk Lymphoma ; 60(4): 912-919, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30301414

RESUMO

We investigated GDP (gemcitabine, 1000 mg/m2 IV d1, d8; dexamethasone, 40 mg po d1-4; cisplatin, 75 mg/m2 IV d1) combined with romidepsin on days 1 and 8 every 21 days to a maximum of six cycles in a standard 3 + 3, phase I dose escalation trial for patients with relapsed/refractory peripheral T-cell (PTCL) or diffuse large B-cell (DLBCL) lymphoma (NCT01846390). After treating four patients, gemcitabine and romidepsin were given on days 1 and 15 every 28 days. On the 21-day schedule at 6 mg/m2 romidepsin, there were three dose-limiting toxicities (DLTs) among four patients. On the 28-day schedule, there were no DLTs at the 6, 8, or 10 mg/m2 dose. At 12 mg/m2, there were four observed grade 3 DLTs among six evaluable patients. Full doses of GDP can be combined with a recommended phase II romidepsin dose of 10 mg/m2 if given on a day 1, 15 every 28 days schedule.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Desoxicitidina/análogos & derivados , Depsipeptídeos/administração & dosagem , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Linfoma de Células T Periférico/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Canadá , Cisplatino/efeitos adversos , Cisplatino/uso terapêutico , Desoxicitidina/efeitos adversos , Desoxicitidina/uso terapêutico , Depsipeptídeos/efeitos adversos , Dexametasona/efeitos adversos , Dexametasona/uso terapêutico , Feminino , Humanos , Linfoma Difuso de Grandes Células B/diagnóstico , Linfoma Difuso de Grandes Células B/mortalidade , Linfoma de Células T Periférico/diagnóstico , Linfoma de Células T Periférico/mortalidade , Masculino , Pessoa de Meia-Idade , Prognóstico , Resultado do Tratamento
17.
J Health Serv Res Policy ; 24(2): 91-99, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30290703

RESUMO

OBJECTIVE: To identify and illuminate influences on middle managers' commitment to innovation implementation. METHODS: A qualitative study was conducted, employing the methods of grounded theory. Semi-structured interviews were used to collect data from middle managers (n = 15) in Nova Scotia and New Brunswick, Canada. Data were collected and analysed concurrently, using an inductive constant comparative approach. Data collection and analysis continued until theoretical saturation was reached. RESULTS: The data revealed middle managers contemplate two central issues in terms of their commitment to implementation, that is whether or not they fully engage in and support the implementation of a particular innovation. These issues are (1) ease of implementation and (2) potential benefit for patients. Middle managers' views and expectations related to ease of implementation are influenced by available resources, fit with setting, and stakeholder buy-in. Their views on patient benefit are influenced by external evidence of benefit and local gaps in care. CONCLUSIONS: These findings provide further insight into the factors that influence middle managers' commitment to innovation implementation, and how middle managers consider these factors in the context of their work settings.


Assuntos
Pessoal Administrativo/psicologia , Difusão de Inovações , Neoplasias , Atenção à Saúde , Teoria Fundamentada , Humanos , Entrevistas como Assunto , Neoplasias/terapia , Novo Brunswick , Nova Escócia , Pesquisa Qualitativa
18.
Worldviews Evid Based Nurs ; 15(6): 414-423, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30291739

RESUMO

BACKGROUND: Middle managers are given scant attention in the implementation literature in health care, where the focus is on senior leaders and frontline clinicians. AIMS: To empirically examine the role of middle managers relevant to innovation implementation and how middle managers experience the implementation process. METHODS: A qualitative study was conducted using the methods of grounded theory. Data were collected through semistructured interviews with middle managers (N = 15) in Nova Scotia and New Brunswick, Canada. Participants were purposively sampled, based on their involvement in implementation initiatives and to obtain variation in manager characteristics. Data were collected and analyzed concurrently, using an inductive constant comparative approach. Data collection and analysis continued until theoretical saturation was reached. RESULTS: Middle managers see themselves as being responsible for making implementation happen in their programs and services. As a result, they carry out five roles related to implementation: planner, coordinator, facilitator, motivator, and evaluator. However, the data also revealed two determinants of middle managers' role in implementation, which they must negotiate to fulfill their specific implementation roles and activities: (1) They perform many other roles and responsibilities within their organizations, both clinical and managerial in nature, and (2) they have limited decision-making power with respect to implementation and must work within the parameters set by upper levels of the organization. LINKING EVIDENCE TO ACTION: Middle managers play an important role in translating adoption decisions into on-the-ground implementation. Optimizing their capacity to fulfill this role may be key to improving innovation implementation in healthcare organizations.


Assuntos
Atenção à Saúde/normas , Papel do Profissional de Enfermagem , Inovação Organizacional , Atenção à Saúde/métodos , Teoria Fundamentada , Humanos , Entrevistas como Assunto/métodos , Novo Brunswick , Nova Escócia , Enfermeiros Administradores , Pesquisa Qualitativa
19.
Leuk Lymphoma ; 58(10): 2319-2327, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28504033

RESUMO

Peripheral T-cell lymphoma (PTCL) is a rare, heterogeneous malignancy. Of the 619 patients with relapsed and refractory (R/R) aggressive lymphoma enrolled in the Canadian Cancer Trials Group LY.12 phase 3 trial, 59 (9.5%) had PTCL. Among these, 81% had advanced stage disease, 41% had an International Prognostic Score ≥3, and 41% were refractory to primary therapy. Within the PTCL cohort, the overall response rate after two cycles of salvage chemotherapy was 36%; no difference was observed between dexamethasone, cytarabine, cisplatin (10/30, 33%), and gemcitabine, cisplatin, dexamethasone (11/29, 38%) therapy. At one year, event-free survival (EFS) was 16% and overall survival (OS) was 28%. For PTCL patients, who received autologous stem cell transplant, two-year EFS and OS were 21% and 42%, respectively. Patients with PTCL had inferior OS (HR 0.49, p < .0001) and EFS (HR 0.53, p < .0001) compared to B-cell lymphoma. Outcomes for patients with R/R PTCL are poor with currently available therapies.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica , Transplante de Células-Tronco Hematopoéticas , Linfoma de Células T Periférico , Terapia de Salvação , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Cisplatino/administração & dosagem , Citarabina/administração & dosagem , Desoxicitidina/administração & dosagem , Desoxicitidina/análogos & derivados , Humanos , Linfoma de Células T Periférico/tratamento farmacológico , Transplante Autólogo , Gencitabina
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