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1.
Transl Oncol ; 50: 102116, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-39232378

RESUMO

OBJECTIVES: The chemokine CCL22 is recognized for recruiting immunosuppressive regulatory T-cells (Treg) that contribute to disease progression in various tumor entities helping them to evade the host immune response. Our study aims to identify the expressing cell types and to evaluate the prognostic significance of CCL22 secretion and its association with Treg invasion in endometrial cancer (EC), an immunogenic cancer. METHODS: Specimens from 275 patients with EC and 28 healthy controls were screened immunohistochemically for CCL22. Immunofluorescence double-staining for CCL22 and different immune cell markers was performed. In vitro regulation of CCL22-expression was examined in EC cell lines (Ishikawa+, RL95-2) and human PBMCs in coculture settings via qPCR and ELISA. RESULTS: Elevated CCL22 staining in tumor cells and CCL22-positive M1-macrophages in tumordistant areas were significantly associated with increased overall survival (OS). Conversely, high, secretory-appearing staining in the peritumoral and intratumoral stroma correlated with reduced OS. Although the analysis of the in vitro coculture model of epithelial tumor- and immune cells revealed PBMCs as the primary source of CCL22, we could confirm expression of the chemokine also in the EC epithelial cells. CONCLUSION: Our study suggests that CCL22 in EC is associated with OS, dependent on its location and the cell type producing it. Intracellular upregulation and extracellular secretion must be considered separately when investigating CCL22 expressing cell types in EC. These results may provide evidence for CCL22-mediated Treg recruitment in EC as a potential future therapeutic target.

2.
Int J Mol Sci ; 25(13)2024 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-39000016

RESUMO

Endometrial cancer (EC) is a common gynecological cancer worldwide. Treatment has been improved in recent years; however, in advanced stages, therapeutic options are still limited. The expression of galectins is increased in several tumor types and that they are involved in important cell processes. Large studies on endometrial cancer are still pending; Specimens of 225 patients with EC were immunohistochemically stained with antibodies for Gal-8 and Gal-9. Expression was correlated with histopathological variables. The cytosolic expression of both galectins is associated with grading and survival. Cytosolic Galectin-8 expression is a positive prognostic factor for overall survival (OS) and progression-free survival (PFS), while nuclear Gal-8 expression correlates only to OS. The cytosolic presence of Galectin-9 is correlated with a better prognosis regarding OS. Our results suggest that expression of both galectins is associated with OS and PFS in EC. Further studies are needed to understand the underlying molecular mechanisms.


Assuntos
Neoplasias do Endométrio , Galectinas , Humanos , Galectinas/metabolismo , Galectinas/genética , Feminino , Neoplasias do Endométrio/metabolismo , Neoplasias do Endométrio/patologia , Neoplasias do Endométrio/mortalidade , Pessoa de Meia-Idade , Idoso , Prognóstico , Biomarcadores Tumorais/metabolismo , Adulto , Idoso de 80 Anos ou mais , Imuno-Histoquímica
3.
bioRxiv ; 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38915610

RESUMO

Purpose: To investigate ultra-high-dose rate helium ion irradiation and its potential FLASH sparing effect with the endpoint acute brain injury in preclinical in vivo settings. Material and methods: Raster-scanned helium ion beams were administered to explore and compare the impact of dose rate variations between standard dose rate (SDR at 0.2 Gy/s) and FLASH (at 141 Gy/s) radiotherapy (RT). Irradiation-induced brain injury was investigated in healthy C57BL/6 mice via DNA damage response kinetic studies using nuclear γH2AX as a surrogate for double-strand breaks (DSB). The integrity of the neurovascular and immune compartments was assessed via CD31+ microvascular density and microglia/macrophages activation. Iba1+ ramified and CD68+ phagocytic microglia/macrophages were quantified, together with the expression of inducible nitric oxide synthetase (iNOS). Results: Helium FLASH RT significantly prevented acute brain tissue injury compared with SDR. This was demonstrated by reduced levels of DSB and structural preservation of the neurovascular endothelium after FLASH RT. Moreover, FLASH RT exhibited reduced activation of neuroinflammatory signals compared with SDR, as detected by quantification of CD68+ iNOS+ microglia/macrophages. Conclusion: To our knowledge, this is the first report on the FLASH-sparing neuroprotective effect of raster scanning helium ion radiotherapy in vivo.

4.
JAMA ; 331(1): 49-59, 2024 01 02.
Artigo em Inglês | MEDLINE | ID: mdl-38059899

RESUMO

Importance: Young women with breast cancer who have germline pathogenic variants in BRCA1 or BRCA2 face unique challenges regarding fertility. Previous studies demonstrating the feasibility and safety of pregnancy in breast cancer survivors included limited data regarding BRCA carriers. Objective: To investigate cumulative incidence of pregnancy and disease-free survival in young women who are BRCA carriers. Design, Setting, and Participants: International, multicenter, hospital-based, retrospective cohort study conducted at 78 participating centers worldwide. The study included female participants diagnosed with invasive breast cancer at age 40 years or younger between January 2000 and December 2020 carrying germline pathogenic variants in BRCA1 and/or BRCA2. Last delivery was October 7, 2022; last follow-up was February 20, 2023. Exposure: Pregnancy after breast cancer. Main Outcomes and Measures: Primary end points were cumulative incidence of pregnancy after breast cancer and disease-free survival. Secondary end points were breast cancer-specific survival, overall survival, pregnancy, and fetal and obstetric outcomes. Results: Of 4732 BRCA carriers included, 659 had at least 1 pregnancy after breast cancer and 4073 did not. Median age at diagnosis in the overall cohort was 35 years (IQR, 31-38 years). Cumulative incidence of pregnancy at 10 years was 22% (95% CI, 21%-24%), with a median time from breast cancer diagnosis to conception of 3.5 years (IQR, 2.2-5.3 years). Among the 659 patients who had a pregnancy, 45 (6.9%) and 63 (9.7%) had an induced abortion or a miscarriage, respectively. Of the 517 patients (79.7%) with a completed pregnancy, 406 (91.0%) delivered at term (≥37 weeks) and 54 (10.4%) had twins. Among the 470 infants born with known information on pregnancy complications, 4 (0.9%) had documented congenital anomalies. Median follow-up was 7.8 years (IQR, 4.5-12.6 years). No significant difference in disease-free survival was observed between patients with or without a pregnancy after breast cancer (adjusted hazard ratio, 0.99; 95% CI, 0.81-1.20). Patients who had a pregnancy had significantly better breast cancer-specific survival and overall survival. Conclusions and Relevance: In this global study, 1 in 5 young BRCA carriers conceived within 10 years after breast cancer diagnosis. Pregnancy following breast cancer in BRCA carriers was not associated with decreased disease-free survival. Trial Registration: ClinicalTrials.gov Identifier: NCT03673306.


Assuntos
Neoplasias da Mama , Genes BRCA1 , Genes BRCA2 , Complicações Neoplásicas na Gravidez , Resultado da Gravidez , Adulto , Feminino , Humanos , Gravidez , Neoplasias da Mama/genética , Neoplasias da Mama/mortalidade , Intervalo Livre de Doença , Mutação em Linhagem Germinativa , Estudos Retrospectivos , Complicações Neoplásicas na Gravidez/genética , Complicações Neoplásicas na Gravidez/mortalidade , Internacionalidade
5.
J Cancer Res Clin Oncol ; 149(9): 6613-6623, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-36792811

RESUMO

PURPOSE: An increasing infiltration of FoxP3-positive T-regs is associated with a higher grade of cervical intraepithelial neoplasia. The T-reg-recruiting chemokine CCL22 is expressed in various tumour entities. Aim of our study was to investigate the role of CCL22 in the progression and regression of cervical intraepithelial neoplasias, especially in patients with intermediate cervical intraepithelial neoplasias (CIN II). Furthermore, our aim was to characterize the CCL22-producing cells and explore the role of innate immunity in the process of cells recruitment. METHODS: CCL22 expression was analyzed immunohistochemically in 169 patient samples. The immunoreactive score as well as the median numbers of positive cells were calculated in each slide and correlated with the histological CIN grade and FoxP3 expression. Additionally, CD68/CCL22 as well as CD68/PPARγ and CD68/FoxP3 expression were examined by double immunofluorescence. Statistical analysis was performed by SPSS 26. RESULTS: A significantly higher expression of epithelial CCL22 in CIN II with progression in comparison to CIN II with regression (p = 0.006) could be detected. CCL22 was correlated with FoxP3 (Spearman's Rho: 0.308; p < 0.01). In 88%, CCL22-positive cells were positive for CD68, and 71% of CD68-positive macrophages expressed PPARγ. Colocalization of CD68 and FoxP3 was detected in 12%. CONCLUSION: We could demonstrate that increased expression of CCL22, mainly produced by macrophages, correlates with elevated potential of malignancy. CCL22 expression could act as a predictor for regression and progression in cervical intraepithelial neoplasia, and it may help in the decision process regarding surgical treatment versus watchful waiting strategy in order to prevent conisation-associated risks. Furthermore, our findings support the potential of CCL22-producing cells as a target for immune therapy in cervical cancer patients.


Assuntos
Displasia do Colo do Útero , Neoplasias do Colo do Útero , Feminino , Humanos , Quimiocina CCL22/metabolismo , PPAR gama , Displasia do Colo do Útero/metabolismo , Neoplasias do Colo do Útero/patologia , Fatores de Transcrição Forkhead/metabolismo
6.
J Cancer Res Clin Oncol ; 149(8): 4293-4303, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36068443

RESUMO

PURPOSE: Endometrial cancer is the most common gynecological malignancy. The helicase RIG-I, a part of the innate immune system, and EFTUD2, a splicing factor which can upregulate RIG-I expression, are shown to influence tumor growth and disease progression in several malignancies. For endometrial cancer, an immunogenic cancer, data about RIG-I and EFTUD2 are still missing. The aim of this study was to examine the expression of RIG-I and EFTUD2 in endometrial cancer. METHODS: 225 specimen of endometrial cancer were immunohistochemically stained for RIG-I and EFTUD2. The results were correlated to clinicopathological data, overall survival (OS) and progression-free survival (PFS). RESULTS: High RIG-I expression correlated with advanced tumor stages (FIGO: p = 0.027; pT: p = 0.010) and worse survival rates (OS: p = 0.009; PFS: p = 0.022). High EFTUD2 expression correlated to worse survival rates (OS: p = 0.026; PFS: p < 0.001) and was determined to be an independent marker for progression-free survival. CONCLUSION: Our data suggest that the expression of RIG-I and EFTUD2 correlates with survival data, which makes both a possible therapeutic target in the future.


Assuntos
Neoplasias do Endométrio , Feminino , Humanos , Estadiamento de Neoplasias , Neoplasias do Endométrio/patologia , Prognóstico , Fatores de Alongamento de Peptídeos , Ribonucleoproteína Nuclear Pequena U5
7.
Cell Oncol (Dordr) ; 45(6): 1171-1185, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36098901

RESUMO

PURPOSE: Endometrial cancer (EC) is one of the most common gynaecologic malignancies. Tumor infiltrating regulatory T-cells (Treg) have been reported to have a prognostic impact in many malignancies. Immunotherapeutic strategies are gaining interest for advanced and recurrent EC cases, where treatment options are rare. Our study was aimed at determining the value of Treg in EC progression. METHODS: EC specimens from 275 patients and 28 controls were screened immunohistochemically for the presence of Treg represented by FoxP3. Correlations with clinicopathological and survival parameters were performed. Functional assays were performed using EC cell lines Ishikawa + and RL95-2 after co-culturing with isolated CD4 + CD25 + CD127dim Treg. To assess the influence of EC on the composition of peripheral blood mononuclear cells (PBMC), flow cytometric analyses were performed. RESULTS: We found that an increased infiltration of Treg was associated with high grades and a reduced overall survival. Treg were almost absent in endometrium tissues from healthy control patients. Co-culture of tumor cells with CD4 + CD25 + CD127dim Treg led to functional changes: enhanced invasion, migration and viability indicated that increased levels of Treg in the tumor microenvironment may promote tumor growth. Furthermore, we found that the presence of EC cells led to phenotypic changes in PBMC, showing significantly increased levels of CD25 and FoxP3. CONCLUSION: Our results indicate that the presence of Treg in the EC tumor environment is associated with a poorer outcome. A remarkable impact of Treg on tumor cell behaviour and vice versa of tumor cells on PBMC subpopulations support this notion mechanistically. Our findings provide a basis for focusing on Treg as potential future therapeutic targets in EC.


Assuntos
Neoplasias do Endométrio , Linfócitos T Reguladores , Feminino , Humanos , Linfócitos T Reguladores/metabolismo , Linfócitos T Reguladores/patologia , Leucócitos Mononucleares/metabolismo , Fatores de Transcrição Forkhead/metabolismo , Subunidade alfa de Receptor de Interleucina-2/metabolismo , Neoplasias do Endométrio/metabolismo , Citometria de Fluxo , Microambiente Tumoral
8.
J Cancer Res Clin Oncol ; 148(12): 3323-3335, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-35729354

RESUMO

PURPOSE: Endometrial cancer (EC) is the most common gynecological cancer worldwide. Treatment has been improved in recent years, but, in advanced stages, therapeutical options are still limited. It has been reported that the expression of the blood group antigens Sialyl Lewis X (SLeX), Sialyl Lewis A (SLeA) and Lewis Y (LeY) is associated with prognosis in several tumors. Large studies on endometrial and cervical cancer are still pending. METHODS: Specimens of 234 patients with EC were immunohistochemically stained with antibodies for SLeX, SLeA and LeY. Expression was correlated to histopathological variables. RESULTS: High expression of SLeX was correlated to low pT-stage (p = 0.013), low grade (p < 0.001), low FIGO-stage (p = 0.006) and better overall survival rates (OS; p = 0.023). High expression of SLeA was associated with low pT-stage (p = 0.013), low grade (p = 0.001) and better progression-free survival (PFS; p = 0.043). LeY staining was correlated to pN + (p = 0.038), low grade (p = 0.005) and poorer PFS (p = 0.022). CONCLUSION: This is the first study examining the expression of SLeX, SLeA and LeY in EC, which can serve as additional future prognostic markers. Further studies are necessary to understand the underlying mechanisms. The study was approved by the local ethics committee of the Ludwig-Maximilians University Munich (reference number 19-249).


Assuntos
Antígenos de Grupos Sanguíneos , Neoplasias do Endométrio , Feminino , Humanos , Antígeno Sialil Lewis X , Antígeno CA-19-9 , Prognóstico
9.
Int J Mol Sci ; 23(11)2022 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-35682791

RESUMO

(1) Background: Placental immune cells are playing a very important role in a successful placentation and the prevention of pregnancy complications. Macrophages dominate in number and relevance in the maternal and the fetal part of the placenta. The evidence on the polarization state of fetal and maternal macrophages involved in both, healthy and pregnancy-associated diseases, is limited. There is no representative isolation method for the direct comparison of maternal and fetal macrophages so far. (2) Material and Methods: For the isolation of decidual macrophages and Hofbauer cells from term placenta, fresh tissue was mechanically dissected and digested with trypsin and collagenase A. Afterwards cell enrichment was increased by a Percoll gradient. CD68 is represented as pan-macrophage marker, the surface markers CD80 and CD163 were further investigated. (3) Results: The established method revealed a high cell yield and purity of the isolated macrophages and enabled the comparison between decidual macrophages and Hofbauer cells. No significant difference was observed in the percentage of single CD163+ cells in the distinct macrophage populations, by using FACS and immunofluorescence staining. A slight increase of CD80+ cells could be found in the decidual macrophages. Considering the percentage of CD80+CD163- and CD80-CD163+ cells we could not find differences. Interestingly we found an increased number of double positive cells (CD80+CD163+) in the decidual macrophage population in comparison to Hofbauer cells. (4) Conclusion: In this study we demonstrate that our established isolation method enables the investigation of decidual macrophages and Hofbauer cells in the placenta. It represents a promising method for direct cell comparison, enzyme independently, and unaffected by magnetic beads, to understand the functional subsets of placental macrophages and to identify therapeutic targets of pregnancy associated diseases.


Assuntos
Placenta , Receptores de Superfície Celular , Antígenos CD , Antígenos de Diferenciação Mielomonocítica/metabolismo , Antígeno B7-1/metabolismo , Moléculas de Adesão Celular/metabolismo , Feminino , Humanos , Macrófagos/metabolismo , Placenta/metabolismo , Gravidez , Receptores de Superfície Celular/metabolismo
10.
Arch Gynecol Obstet ; 306(4): 1211-1220, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35377045

RESUMO

PURPOSE: Galectins are carbohydrate-binding proteins with multiple effects on cell biology. Research shows that they play an important role in tumor development and progression. Therefore, in this study, the presence of Galectin-8 and -9 (Gal), both already known as prognostic factors in other tumor entities, were investigated in cervical cancer. Our aim was to examine the association of Gal-8 and -9 expression with histopathological markers and survival of the patients. METHODS: Gal-8 and -9 expression was investigated in 250 cervical cancer samples by immunohistochemistry. The staining was evaluated using the immunoreactive score (IRS). The results were correlated to clinical and pathological data. The correlation of Gal-8 and -9 expression with overall and relapse-free survival was analyzed. RESULTS: Expression of Gal-8 was associated with negative N-status and lower FIGO status. Detection of Gal-9 was connected to negative N-status and lower grading regarding all specimens. A correlation of Gal-9 with lower FIGO status was detected for squamous cell carcinoma (SCC) only. Expression of Gal-8 was associated with relapse-free survival of SCC patients in a positive manner. Gal-9 expression was associated with better overall survival. CONCLUSION: Our results suggest that expression of both galectins is inversely associated with tumor stage and progression. Gal-8 expression is associated with relapse-free survival of patients with SCC, while presence of Gal-9 in cervical cancer is associated with a better prognosis in regard of overall survival.


Assuntos
Carcinoma de Células Escamosas , Neoplasias do Colo do Útero , Carcinoma de Células Escamosas/patologia , Feminino , Galectinas , Humanos , Imuno-Histoquímica , Recidiva Local de Neoplasia , Prognóstico , Neoplasias do Colo do Útero/patologia
11.
J Palliat Med ; 25(10): 1468-1475, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35442773

RESUMO

Background: Despite substantial palliative care (PC) needs in people with serious illnesses other than cancer, outpatient PC is less available to these populations. Objectives: Describe the experience, impact, and lessons learned from implementing an outpatient PC service (OPCS) for people with noncancer illnesses. Design: Observational cohort study. Setting/Subjects: Patients seen by an OPCS at a United States academic medical center October 2, 2017-March 31, 2021. Measurements: Patient demographics and clinical characteristics, care processes, rates of advance care planning (ACP), and health care utilization. Results: During the study period, 736 patients were seen. Mean age was 66.7 years, 47.7% were women, and 61.4% were White. Nearly half (44.9%) had a neurologic diagnosis, 19.2% pulmonary, and 11.0% cardiovascular. Patients were most often referred for symptoms other than pain (62.2%), ACP (60.2%), and support for patient/family (48.2%). Three-quarters (74.1%) of visits occurred by video. A PC physician, nurse, social worker, and spiritual care provider addressed nonpain symptoms (for 79.2%), family caregiver needs (70.0%), psychosocial distress (69.9%), ACP (68.8%), care coordination (66.8%), pain (38.2%), and spiritual concerns (27.8%). Rates of advance directives increased from 24.6% to 31.8% (p < 0.001) and Physician Orders for Life-Sustaining Treatment forms from 15.6% to 27.3% (p < 0.001). Of 214 patients who died, 61.7% used hospice, with median hospice length-of-stay >30 days. Comparing the six months before initiating PC to the six months after, hospitalizations decreased by 31.3% (p = 0.001) and hospital days decreased by 29.8% (p = 0.02). Conclusions: Outpatient PC for people with noncancer illnesses is feasible, addresses needs in multiple domains, and is associated with increased rates of ACP and decreased health care utilization. Controlled studies are warranted.


Assuntos
Enfermagem de Cuidados Paliativos na Terminalidade da Vida , Cuidados Paliativos , Idoso , Assistência Ambulatorial , Feminino , Humanos , Masculino , Pacientes Ambulatoriais , Dor , Estados Unidos
12.
Int J Radiat Oncol Biol Phys ; 113(3): 614-623, 2022 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-35196536

RESUMO

PURPOSE: To investigate brain tissue response to ultra-high dose rate (uHDR, FLASH) and standard dose rate (SDR) proton irradiations in the Bragg peak region. METHODS AND MATERIALS: Active scanning uHDR delivery was established for proton beams for investigation of dose rate effects between clinical SDR and uHDR at ∼10 Gy in the Bragg peak region (dose-averaged linear energy transfer [LETD] ranging from 4.5 to 10.2 keV µm-1 ). Radiation- induced injury of neuronal tissue was assessed by studying the DNA double strand break repair kinetics surrogated by nuclear γH2AX staining (radiation induced foci [RIF]), microvascular density and structural integrity (MVD, CD31+ endothelium), and inflammatory microenvironmental response (CD68+ microglia/macrophages and high mobility group box protein 1[HMGB]) in healthy C57BL/6 mouse brains. RESULTS: Averaged dose rates achieved were 0.17 Gy/s (SDR) and 120 Gy/s (uHDR). The fraction of RIF-positive cells increased after SDR ∼10-fold, whereas a significantly lower fraction of RIF-positive cells was found after uHDR versus SDR (∼2 fold, P < .0001). Moreover, uHDR substantially preserved the microvascular architecture and reduced microglia/macrophage regulated associated inflammation as compared with SDR. CONCLUSIONS: The feasibility of uHDR raster scanning proton irradiation is demonstrated to elicit FLASH sparing neuroprotective effects compared to SDR in a preclinical in vivo model.


Assuntos
Fármacos Neuroprotetores , Terapia com Prótons , Lesões por Radiação , Animais , Transferência Linear de Energia , Camundongos , Camundongos Endogâmicos C57BL , Terapia com Prótons/métodos , Prótons
13.
Arch Gynecol Obstet ; 305(6): 1559-1572, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-34870752

RESUMO

OBJECTIVE: Ovarian cancer is the most lethal gynecologic cancer. Resveratrol (RSV) is known to alter metabolism in cancer. It affects the nuclear retinoid-X-receptor (RXR), which implies a modulating effect of RXR to gynaecologic cancers. Furthermore, RSV targets Sirtuin1 (Sirt1), a histone deacetylase. STUDY DESIGN: 123 tissue samples of patients with serous or mucinous ovarian cancer were examined for expression of Sirt1 and RXR. Ovarian cell lines were treated with RSV and consequences on viability and apoptosis were evaluated. The influence of RSV to Sirt1 and RXR expression was analyzed by western blotting RESULTS: A correlation of nuclear Sirt1 and RXRα expression could be detected (p = 0.006). Co-expression of nuclear RXRα and cytoplasmic (p = 0.026) or nuclear (p = 0.041) Sirt1 was associated with significantly increased overall survival in advanced tumour stages. Viability was decreased in all cell lines after stimulation with resveratrol, while cell apoptosis was increased. RSV treatment led to significant lower Sirt1 expression in A2780 cells (p = 0.025) and significant increased RXR expression in cisA2780 cells (p = 0.012) CONCLUSION: In order to use RSV as medical target, studies could be developed to improve the understanding of drug resistance mechanisms and consequently improve treatment outcome.


Assuntos
Neoplasias Ovarianas , Resveratrol , Receptor X Retinoide alfa , Sirtuína 1 , Linhagem Celular Tumoral , Feminino , Humanos , Neoplasias Ovarianas/tratamento farmacológico , Prognóstico , Resveratrol/farmacologia , Receptor X Retinoide alfa/genética , Sirtuína 1/genética
14.
Int J Radiat Oncol Biol Phys ; 112(3): 802-817, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-34710524

RESUMO

PURPOSE: Our purpose was to develop a mechanistic model that describes and predicts radiation response after combined DNA damage repair interference (DDRi) and particle radiation therapy. METHODS AND MATERIALS: The heterogeneous dose distributions of protons and 4He ions were implemented into the "UNIfied and VERSatile bio-response Engine" (UNIVERSE). Predictions for monoenergetic and mixed fields over clinically relevant dose and linear energy transfer range were compared with experimental in vitro survival data measured in this work as well as data available in the literature, including different cell lines and DDR interferences. Ultimately, UNIVERSE predictions were investigated in a patient plan. RESULTS: UNIVERSE accurately predicts survival of cell lines with and without DDRi in clinical settings of ion beam therapy based only on 3 parameters derived from photon data. With increasing dose or linear energy transfer, the radiosensitizing effect of DDRi decreases, resulting in diminished relative biological effect of ion beam radiation for cells subjected to DDRi in comparison to cells that are not. Similar trends were observed in patient plan recalculations; however, this analysis also suggests that DDRi + particle radiation therapy may better preserve the therapeutic window in comparison to DDRi + photon radiation therapy. CONCLUSIONS: The presented framework represents the first mechanistic model of combined DDRi and particle radiation therapy comprehensively benchmarked in clinically relevant scenarios and a step toward more personalized treatment. It reveals potential differences between DDRi + photon radiation therapy versus DDRi + particle radiation therapy, which have not been described so far. UNIVERSE could aid in appraising the clinical viability of combined administration of radiosensitizing drugs and charged particle therapy, as well as the identification of patients with known DDR deficiencies in the tumor who might benefit from therapy with light ions, freeing limited space at heavy ion therapy centers.


Assuntos
Benchmarking , Radioterapia com Íons Pesados , Dano ao DNA , Reparo do DNA , Radioterapia com Íons Pesados/métodos , Humanos , Íons , Modelos Biológicos , Eficiência Biológica Relativa
15.
Arch Gynecol Obstet ; 305(4): 913-920, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34510244

RESUMO

PURPOSE: The tumour's ability to metastasize is the major cause for fatal outcomes in cancer diseases. In breast cancer, aberrant E-Cadherin expression has been linked to invasiveness and poor prognosis. METHOD: We assessed expression of E-Cadherin by immunohistochemistry in primary tumour tissue from 125 female breast cancer patients. Staining intensities were analysed using the immunoreactive score (IRS). We investigated E-Cadherin expression and its associations with clinicopathological parameters (age, tumour size, lymph node status, grade, hormone receptors, Her2 Status) as well as with recurrence and survival. RESULTS: Increased, rather than aberrant E-Cadherin expression was found and was associated with poor outcome (p = 0.046). Our data show an association between elevated E-Cadherin in primary tumour tissue and an unfavourable negative prognosis in patients. CONCLUSION: This association was somehow unexpected as loss of E-Cadherin has long been regarded as a prerequisite for development of invasiveness and metastases. Our findings support the notion that E-Cadherin promotes, rather than suppresses, development of metastasis and invasiveness.


Assuntos
Neoplasias da Mama , Caderinas , Antígenos CD/metabolismo , Biomarcadores Tumorais/análise , Neoplasias da Mama/patologia , Caderinas/metabolismo , Feminino , Humanos , Imuno-Histoquímica , Metástase Linfática , Prognóstico
16.
J Cancer Res Clin Oncol ; 148(2): 377-386, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34739585

RESUMO

PURPOSE: Forkhead Box Protein 3 (FoxP3) is known as a key mediator in the immunosuppressive function of regulatory T-cells (Tregs). The aim of our study was to investigate whether FoxP3-positive Tregs have the potential to act as an independent predictor in progression as well as in regression of cervical intraepithelial neoplasia, especially in patients with intermediate cervical intraepithelial neoplasia (CIN II). METHODS: Nuclear FoxP3 expression was immunohistochemically analysed in 169 patient samples (CIN I, CIN II with regressive course, CIN II with progressive course, CIN III). The median numbers were calculated for each slide and correlated with the histological CIN grade. Statistical analysis was performed by SPSS 26 (Mann-Whitney U test, Spearman's rank correlation). RESULTS: An increased FoxP3 expression in CIN II with progression could be detected in comparison to CIN II with regression (p = 0.003). Total FoxP3 expression (epithelium and dysplasia-connected stroma) was higher in more advanced CIN grades (p < 0.001 for CIN I vs. CIN II; p = 0.227 for CIN II vs. CIN III). A positive correlation could be detected between FoxP3-positive cells in epithelium and total FoxP3 expression (Spearman's Rho: 0,565; p < 0.01). CONCLUSION: Expression of FoxP3 could be a helpful predictive factor to assess the risks of CIN II progression. As a prognosticator for regression and progression in cervical intraepithelial lesions it might thereby help in the decision process regarding surgical treatment vs. watchful waiting strategy to prevent conisation-associated risks for patients in child-bearing age. In addition, the findings support the potential of Tregs as a target for immune therapy in cervical cancer patients.


Assuntos
Fatores de Transcrição Forkhead/metabolismo , Linfócitos T Reguladores/fisiologia , Displasia do Colo do Útero/patologia , Neoplasias do Colo do Útero/patologia , Adolescente , Adulto , Biomarcadores Tumorais/metabolismo , Progressão da Doença , Feminino , Alemanha , Humanos , Imuno-Histoquímica , Pessoa de Meia-Idade , Regressão Neoplásica Espontânea/patologia , Infecções por Papillomavirus/imunologia , Infecções por Papillomavirus/metabolismo , Infecções por Papillomavirus/patologia , Prognóstico , Linfócitos T Reguladores/metabolismo , Linfócitos T Reguladores/patologia , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/imunologia , Neoplasias do Colo do Útero/metabolismo , Adulto Jovem , Displasia do Colo do Útero/diagnóstico , Displasia do Colo do Útero/imunologia , Displasia do Colo do Útero/metabolismo
17.
Breast Care (Basel) ; 16(4): 343-349, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34602939

RESUMO

INTRODUCTION: Breast cancer (BC) is the most common cancer in women worldwide. Despite screening and information efforts, about 10% of patients present with tumor size T3 or T4 at primary diagnosis. Late presentation is associated with more advanced tumor stage and consecutively with worse survival rates. OBJECTIVE: This study aimed to evaluate whether patients with a late presentation at primary BC diagnosis differ in their personality from those with early diagnosis. METHODS: In this bicentric, observational study, personality traits, positive and negative affectivity, anxiety, spirituality, illness beliefs, and sociodemographic characteristics were assessed in BC patients who presented with T-stages 3 or 4 (late presenters) and T-stages 1 or 2 (controls) at initial diagnosis. RESULTS: Forty patients (20 controls, 20 late presenters) were interviewed. "Late presenters" perceived their disease as long lasting and had significantly more "positive affectivity" in the current trait. Although no significant associations were found, there was a trend for late presenters to have higher education levels, less spiritual longing, less accurate explanation of their illness, less anxiety in the trait scale, and more conscientiousness than the controls. CONCLUSION: As patients with late presentation for BC differ in specific psychological and sociodemographic characteristics from patients with early BC, the findings of this pilot project warrant additional investigations to identify further specific characteristics and motivations. Identifying patients at risk for late presentation and encouraging them to accept an earlier diagnosis could help to improve their therapy and, finally, their outcome.

18.
Cancer Cell ; 39(10): 1388-1403.e10, 2021 10 11.
Artigo em Inglês | MEDLINE | ID: mdl-34506739

RESUMO

Localized radiotherapy (RT) induces an immunogenic antitumor response that is in part counterbalanced by activation of immune evasive and tissue remodeling processes, e.g., via upregulation of programmed cell death-ligand 1 (PD-L1) and transforming growth factor ß (TGF-ß). We report that a bifunctional fusion protein that simultaneously inhibits TGF-ß and PD-L1, bintrafusp alfa (BA), effectively synergizes with radiotherapy, leading to superior survival in multiple therapy-resistant murine tumor models with poor immune infiltration. The BA + RT (BART) combination increases tumor-infiltrating leukocytes, reprograms the tumor microenvironment, and attenuates RT-induced fibrosis, leading to reconstitution of tumor immunity and regression of spontaneous lung metastases. Consistently, the beneficial effects of BART are in part reversed by depletion of cytotoxic CD8+ T cells. Intriguingly, targeting of the TGF-ß trap to PD-L1+ endothelium and the M2/lipofibroblast-like cell compartment by BA attenuated late-stage RT-induced lung fibrosis. Together, the results suggest that the BART combination has the potential to eradicate therapy-resistant tumors while sparing normal tissue, further supporting its clinical translation.


Assuntos
Inibidores de Checkpoint Imunológico/uso terapêutico , Evasão da Resposta Imune/imunologia , Neoplasias/tratamento farmacológico , Neoplasias/radioterapia , Fator de Crescimento Transformador beta/metabolismo , Animais , Humanos , Inibidores de Checkpoint Imunológico/farmacologia , Camundongos , Microambiente Tumoral
19.
J Palliat Med ; 24(12): 1823-1832, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34115958

RESUMO

Background: The morbidity and mortality of interstitial lung disease (ILD) is high, despite novel therapeutics. Recognizing unmet needs for symptom management, advance care planning (ACP), and support for people with ILD and their families, we developed a palliative care-ILD collaborative care pilot program to improve access to palliative care. Methods: In the quantitative arm of this mixed-methods study, we evaluated which patients were cared for through the palliative care co-management program and the impact of the program on rates of ACP and opioid prescribing. In the qualitative arm, we interviewed patients and family caregivers, as well as pulmonary and palliative care clinicians, to understand perceptions about palliative care. Results: Thirty-one patients were co-managed by the palliative care and ILD teams during the study period. Half (48.4%) had idiopathic pulmonary fibrosis. Mean forced vital capacity (FVC) was 61.7%. Nearly half (48.4%) received all of their palliative care via telehealth. With palliative care, the rate of ACP notes increased from 3.2% to 100% (p < 0.001), rate of advance directive completion increased from 22.6% to 35.5% (p = 0.046), and rate of physician orders for life-sustaining treatments (POLST) form completion increased from 0% to 35.5% (p = 0.001). Half (51.6%) were prescribed opiates, overwhelmingly short-acting opiates to use as needed for severe episodic dyspnea. Themes from the qualitative analyses included that the palliative care team was supportive and patient-centered, improved symptoms and medication side effects, and enhanced illness understanding. Clinicians reported how palliative care co-management improved patient care and clinician experience, but barriers to referral remain including misperceptions about palliative care on the part of providers and patients. Conclusions: Palliative care co-management for patients with moderately severe ILD holds promise, and our experience can inform groups at other centers who are interested in developing such care models. Ongoing challenges include systematically reaching all patients who are likely to benefit.


Assuntos
Planejamento Antecipado de Cuidados , Doenças Pulmonares Intersticiais , Analgésicos Opioides/uso terapêutico , Humanos , Doenças Pulmonares Intersticiais/terapia , Cuidados Paliativos/métodos , Padrões de Prática Médica
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