BACKGROUND: Vaccination against 5 prominent meningococcal serogroups (A/B/C/W/Y) is necessary for broad disease protection. We report immunopersistence through 4 years after a 2-dose (6-month interval) pentavalent MenABCWY primary vaccine series and safety and immunogenicity of a booster administered 4 years after primary vaccination. METHODS: This randomized, active-controlled, observer-blinded study was conducted in the United States and Europe. In stage 1, healthy MenACWY vaccine-naive or -experienced 10- to 25-year-olds were randomized 1:2 to receive MenABCWY and placebo or MenB-fHbp and MenACWY-CRM. Eligible participants were randomly selected to participate in stage 2, which was an open-label immunopersistence and booster extension. Immunogenicity was assessed through serum bactericidal antibody using human complement (hSBA) assays with serogroups A/C/W/Y (MenA/C/W/Y) and 4 primary serogroup B (MenB) test strains. Immunogenicity endpoints included hSBA seroprotection rates through 48 months after primary vaccination and 1 month after the booster. Safety endpoints included booster reactogenicity events and adverse events (AEs). RESULTS: Of 1379 eligible participants, 353 entered stage 2; 242 completed the 48-month blood draw after primary vaccination and 240 completed the booster vaccination phase. MenA/C/W/Y seroprotection rates remained high for 4 years following a 2-dose MenABCWY primary series (MenACWY-naive, 62.0 %-100.0 %; MenACWY-experienced, 98.7 %-100.0 %) and trended higher than those after a single MenACWY-CRM dose (MenACWY-naive, 38.1 %-95.2 %; MenACWY-experienced, 89.7 %-100.0 %). Corresponding seroprotection rates against MenB remained stable and generally higher than baseline (MenABCWY, 18.2 %-36.6 %; MenB-fHbp, 16.2 %-31.9 % across strains). Following a booster, seroprotection rates against all 5 serogroups were ≥ 93.8 % across groups. Most booster dose reactogenicity events were mild or moderate in severity, and AEs were infrequent. CONCLUSIONS: Immune responses remained high for MenA/C/W/Y and above baseline for MenB through 4 years after the MenABCWY primary series, with robust responses for all 5 serogroups observed following a booster. The MenABCWY booster had an acceptable safety and tolerability profile consistent with the primary series. NCT03135834.

• MeSH
• dítě MeSH
• dospělí MeSH
• imunogenicita vakcíny MeSH
• komplement imunologie   MeSH
• lidé MeSH
• meningokokové infekce * prevence a kontrola   imunologie   MeSH
• meningokokové vakcíny * imunologie   škodlivé účinky   aplikace a dávkování   MeSH
• mladiství MeSH
• mladý dospělý MeSH
• Neisseria meningitidis imunologie   MeSH
• protilátky bakteriální * krev   MeSH
• sekundární imunizace * metody   MeSH
• séroskupina MeSH
• vakcíny konjugované imunologie   aplikace a dávkování   škodlivé účinky   MeSH
• Check Tag
• dítě MeSH
• dospělí MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• randomizované kontrolované studie MeSH
• Geografické názvy
• Evropa MeSH
• Spojené státy americké MeSH

Despite the lower virulence of current SARS-CoV-2 variants and high rates of vaccinated and previously infected subjects, COVID-19 remains a persistent threat in kidney transplant recipients (KTRs). This study evaluated the parameters of anti-SARS-CoV-2 antibody production in 120 KTRs. The production of neutralizing antibodies in KTRs, following booster vaccination with the mRNA vaccine BNT162b2, was significantly decreased and their decline was faster than in healthy subjects. Factors predisposing to the downregulation of anti-SARS-CoV-2 neutralizing antibodies included age, lower estimated glomerular filtration rate, and a full dose of mycophenolate mofetil. Neutralizing antibodies correlated with those targeting the SARS-CoV-2 receptor binding domain (RBD), SARS-CoV-2 Spike trimmer, total SARS-CoV-2 S1 protein, as well as with antibodies to the deadly SARS-CoV-1 virus. No cross-reactivity was found with antibodies against seasonal coronaviruses. KTRs exhibited lower postvaccination production of neutralizing antibodies against SARS-CoV-2; however, the specificity of their humoral response did not differ compared to healthy subjects.

• MeSH
• COVID-19 * imunologie   prevence a kontrola   MeSH
• dospělí MeSH
• glykoprotein S, koronavirus imunologie   MeSH
• humorální imunita MeSH
• lidé středního věku MeSH
• lidé MeSH
• neutralizující protilátky * krev   imunologie   MeSH
• příjemce transplantátu * MeSH
• protilátky virové * krev   imunologie   MeSH
• SARS-CoV-2 * imunologie   MeSH
• sekundární imunizace MeSH
• senioři MeSH
• transplantace ledvin * škodlivé účinky   MeSH
• vakcína BNT162 imunologie   aplikace a dávkování   MeSH
• vakcíny proti COVID-19 imunologie   aplikace a dávkování   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

• MeSH
• COVID-19 MeSH
• pandemie prevence a kontrola   MeSH
• Světová zdravotnická organizace MeSH
• vakcinace MeSH
• Geografické názvy
• Slovenská republika MeSH

BACKGROUND AND OBJECTIVE: There are limited data on real-world outcomes for patients with advanced or metastatic urothelial cancer (mUC) since immune checkpoint inhibitors (ICIs) became available. Our objective was to analyze outcomes for patients with mUC since ICIs became available. METHODS: We performed a retrospective analysis of 131 patients with mUC attending the outpatient clinic of a single tertiary care center who received systemic therapy between June 2017 and July 2021 with follow-up up to December 2022. Summary and descriptive statistics were calculated for categorical and continuous variables. The Kaplan-Meier method was applied to calculate survival, and a Cox proportional-hazards model was used to explore associations between clinical variables and outcomes. KEY FINDINGS AND LIMITATIONS: The median patient age was 68 yr (range 35-90). The first systemic therapy administered was platinum-based in 79% of cases and ICI-based in 21%. Some 61% of the cohort received a second systemic treatment, with 75% of these an ICI. Median overall survival for the entire cohort was 24 mo (interquartile range 9-35). Patients on ICI therapy for ≥6 mo had median overall survival of 59 mo (95% confidence interval 39 mo-not reached). Metastatic sites on initiation of ICI therapy and C-reactive protein kinetics were prognostic in patients receiving ICIs. Limitations include the retrospective design and inherent selection bias. CONCLUSIONS AND CLINICAL IMPLICATIONS: More than 60% of patients with mUC received second-line treatment, and 75% of these received an ICI. Patients staying on immunotherapy for more than 6 mo have substantially better outcomes in comparison to patients with less time on immunotherapy and historical cohorts. PATIENT SUMMARY: We looked at the lines of therapy and outcomes for patients with advanced or metastatic cancer of the urinary tract, starting from when immunotherapy drugs called immune checkpoint inhibitors (ICIs) became available. We found that 60% of patients have received second-line therapy, which is a double the rate in comparison to historical groups of patients. Patients with long-term ICI therapy (>6 months) had significantly better outcomes, with a median survival of more than 3 years.

• MeSH
• dospělí MeSH
• imunoterapie * metody   MeSH
• inhibitory kontrolních bodů * terapeutické užití   MeSH
• karcinom z přechodných buněk * farmakoterapie   sekundární   patologie   MeSH
• lékařská praxe - způsoby provádění statistika a číselné údaje   MeSH
• lidé středního věku MeSH
• lidé MeSH
• metastázy nádorů MeSH
• míra přežití MeSH
• nádory močového měchýře * farmakoterapie   patologie   MeSH
• retrospektivní studie MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• staging nádorů MeSH
• urologické nádory farmakoterapie   patologie   MeSH
• výsledek terapie MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

The use of nanoparticles as a delivery system for a specific antigen could solve many limitations of mucosal vaccine applications, such as low immunogenicity, or antigen protection and stabilization. In this study, we tested the ability of nasally administered chitosan nanoparticles loaded with glycoprotein B of murine cytomegalovirus to induce an immune response in an animal model. The choice of chitosan nanoparticle type was made by in vitro evaluation of sorption efficiency and antigen release. Three types of chitosan nanoparticles were prepared: crosslinked with tripolyphosphate, coated with hyaluronic acid, and in complex with polycaprolactone. The hydrodynamic size of the nanoparticles by dynamic light scattering, zeta potential, Fourier transform infrared spectroscopy, scanning electron microscopy, stability, loading efficiency, and release kinetics with ovalbumin were evaluated. Balb/c mice were immunized intranasally using the three-dose protocol with nanoparticles, gB, and adjuvants Poly(I:C) and CpG ODN. Subsequently, the humoral and cell-mediated antigen-specific immune response was determined. On the basis of the properties of the tested nanoparticles, the cross-linked nanoparticles were considered optimal for further investigation. The results show that nanoparticles with Poly(I:C) and with gB alone raised IgG antibody levels above the negative control. In the case of mucosal IgA, only gB alone weakly induced the production of IgA antibodies compared to saline-immunized mice. The number of activated cells increased slightly in mice immunized with nanoparticles and gB compared to those immunized with gB alone or to negative control. The results demonstrated that chitosan nanoparticles could have potential in the development of mucosal vaccines.

• MeSH
• adjuvancia imunologická MeSH
• aplikace intranazální MeSH
• chitosan * chemie   MeSH
• glykoproteiny MeSH
• imunizace MeSH
• imunoglobulin A MeSH
• Muromegalovirus * MeSH
• myši inbrední BALB C MeSH
• myši MeSH
• nanočástice * chemie   MeSH
• slizniční imunita MeSH
• vakcíny * MeSH
• zvířata MeSH
• Check Tag
• myši MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH

Úvod: Adenokarcinom žaludku a gastroezofageální junkce je onemocněním s vysokou mortalitou. Asi 10 % těchto nádorů je charakterizováno mikrosatelitovou instabilitou (MSI-H) s předpokladem dobré léčebné odpovědi na imunoterapii. Léčba inhibitory kontrolního bodu je standardně součástí paliativních režimů, v podmínkách České republiky je v indikaci MSI-H karcinomu žaludku a junkce úhrada zdravotní pojišťovnou pouze u pacientů, jejichž nádory vykazují pozitivitu kombinovaného pozitivního skóre ≥ 5. Recentní studie publikovaly slibné výsledky léčby imunoterapií u časných stadií MSI-H gastroezofageálního adenokarcinomu. Kazuistika: Padesátidevítiletá žena s lokálně pokročilým nízce kohezivním MSI-H adenokarcinomem malé křiviny žaludku. Z indikace multidisciplinárního týmu zahájila neoadjuvantní léčbu chemoimunoterapií. Efektem byla významná parciální regrese primárního nádoru a infiltrovaných spádových mízních uzlin žaludku. Následně pacientka podstoupila nekomplikovanou radikální totální gastrektomii s D2 lymfadenektomií. Po krátké pooperační rekonvalescenci pokračuje v adjuvantní léčbě imunoterapií, dosud s dobrou tolerancí léčby. Závěr: Kazuistika podporuje potenciální význam imunoterapie v léčbě resekabilního lokálně pokročilého MSI-H karcinomu žaludku, která je v současnosti předmětem hodnocení klinických studií.

Introduction: Gastric and gastroesophageal junction adenocarcinoma is a disease with high mortality. Approximately 10% of these tumors are characterized by microsatellite instability with a presumed good response to immunotherapy. So far, treatment with checkpoint inhibitors is part of palliative regimens, in the Czech Republic this treatment is reimbursed in patients with MSI-H gastroesophageal adenocarcinoma exhibiting a combined positive score ≥ 5. Promising results of immunotherapy used in the early stages of MSI-H gastroesophageal adenocarcinoma were published recently. Case report: A 59-year-old woman with locally advanced poorly cohesive MSI-H adenocarcinoma of the small curvature of the stomach. Based on the indication of the multidisciplinary team, she started neoadjuvant treatment with chemoimmunotherapy. The outcome was significant partial regression of the primary tumor and infiltrated gastric lymph nodes. Subsequently, the patient underwent uncomplicated radical total gastrectomy with D2 lymphadenectomy. After a short postoperative recovery, she continues adjuvant treatment with immunotherapy, so far with good tolerance. Conclusion: This case report supports the potential importance of immunotherapy in the treatment of resectable locally advanced MSI-H gastric cancer, which is currently being evaluated in clinical trials.

• MeSH
• adenokarcinom chirurgie   diagnóza   MeSH
• gastrektomie MeSH
• imunoterapie MeSH
• lidé středního věku MeSH
• lidé MeSH
• mikrosatelitní nestabilita MeSH
• nádory žaludku * chirurgie   diagnóza   farmakoterapie   MeSH
• neoadjuvantní terapie MeSH
• protokoly antitumorózní kombinované chemoterapie * MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• ženské pohlaví MeSH
• Publikační typ
• kazuistiky MeSH

The application of lipid-based nanoparticles for COVID-19 vaccines and transthyretin-mediated amyloidosis treatment have highlighted their potential for translation to cancer therapy. However, their use in delivering drugs to solid tumors is limited by ineffective targeting, heterogeneous organ distribution, systemic inflammatory responses, and insufficient drug accumulation at the tumor. Instead, the use of lipid-based nanoparticles to remotely activate immune system responses is an emerging effective strategy. Despite this approach showing potential for treating hematological cancers, its application to treat solid tumors is hampered by the selection of eligible targets, tumor heterogeneity, and ineffective penetration of activated T cells within the tumor. Notwithstanding, the use of lipid-based nanoparticles for immunotherapy is projected to revolutionize cancer therapy, with the ultimate goal of rendering cancer a chronic disease. However, the translational success is likely to depend on the use of predictive tumor models in preclinical studies, simulating the complexity of the tumor microenvironment (e.g., the fibrotic extracellular matrix that impairs therapeutic outcomes) and stimulating tumor progression. This review compiles recent advances in the field of antitumor lipid-based nanoparticles and highlights emerging therapeutic approaches (e.g., mechanotherapy) to modulate tumor stiffness and improve T cell infiltration, and the use of organoids to better guide therapeutic outcomes.

• MeSH
• familiární amyloidové neuropatie * MeSH
• imunoterapie MeSH
• lidé MeSH
• lipidy MeSH
• nádorové mikroprostředí MeSH
• nádory * terapie   MeSH
• vakcíny proti COVID-19 MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Publikace se zaměřuje na možnosti farmakoterapie autoimunitních nemocí. Určeno odborné veřejnosti.

• MeSH
• autoimunitní nemoci MeSH
• imunologické faktory MeSH
• imunoterapie MeSH

• Konspekt
• Farmacie. Farmakologie
• NLK Obory
• farmakoterapie
• alergologie a imunologie
• NLK Publikační typ
• kolektivní monografie

Chimeric antigen receptor (CAR) T-cell therapy has revolutionized the treatment paradigms for hematological malignancies. However, more than half of these patients cannot achieve sustainable tumor control, partially due to the inadequate potency of CAR-T cells in eradicating tumor cells. T cells are crucial components of the anti-tumor immune response, and multiple intrinsic T-cell features significantly influence the outcomes of CAR-T cell therapy. Herein, we review progressing research on T-cell characteristics that impact the effectiveness of CAR-T cells, including T-cell exhaustion, memory subsets, senescence, regulatory T-cells, the CD4+ to CD8+ T-cell ratio, metabolism, and the T-cell receptor repertoire. With comprehensive insight into the biological processes underlying successful CAR-T cell therapy, we will further refine the applications of these novel therapeutic modalities, and enhance their efficacy and safety for patients.

• MeSH
• chimerické antigenní receptory * imunologie   MeSH
• hematologické nádory * terapie   imunologie   MeSH
• imunoterapie adoptivní * metody   MeSH
• lidé MeSH
• T-lymfocyty imunologie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Hepatocelulárny karcinóm (HCC) predstavuje najčastejšiu primárnu malignitu pečene, tvorí približne 75–80 % všetkých prípadov rakoviny pečene. Globálny výskyt hepatocelulárneho karcinómu sa zvyšuje v dôsledku rastúceho počtu základných ochorení, čo vytvára významnú rakovinovú záťaž a významnú klinickú výzvu v dôsledku jeho často neskorého prejavu a obmedzených účinných možností liečby. Inhibítory imunitného kontrolného bodu spôsobili revolúciu v prístupe k liečbe rôznych malignít. Pri liečbe pokročilého hepatocelulárneho karcinómu sa imunoterapia ukázala byť účinnejšia ako inhibítory tyrozínkinázy, ktoré boli možnosťou liečby už desaťročie. Klinické štúdie ako HIMALAYA a IMbrave150 preukázali významné prínosy prežitia a preukázali vyššiu účinnosť v porovnaní so sorafenibom. Napriek týmto sľubným výsledkom nie všetci pacienti s HCC reagujú na imunoterapiu rovnako. Je potrebné hľadať spoľahlivé prognostické a prediktívne biomarkery, ktoré môžu pomôcť predpovedať, ktorí pacienti budú s najväčšou pravdepodobnosťou profitovať z imunoterapie, a tým personalizovať liečbu a zlepšiť výsledky. Účelom tohto článku je poskytnúť súhrn klinických štúdií imunoterapie pre rôzne štádiá hepatocelulárneho karcinómu.

Hepatocellular carcinoma (HCC) represents the most common primary liver malignancy, accounting for approximately 75–80% of all liver cancer cases. The global incidence of hepatocellular carcinoma is increasing due to rising rates of underlying diseases, creating a significant cancer burden and a significant clinical challenge due to its often late presentation and limited effective treatment options. Immune checkpoint inhibitors have revolutionized the treatment approach in various malignancies. In the treatment of advanced hepatocellular carcinoma, immunotherapy has proven to be more effective than tyrosine kinase inhibitors, which have been a treatment option for a decade. Clinical trials such as the HIMALAYA and IMbrave150 have demonstrated significant survival benefits, showing superior efficacy compared to sorafenib. Despite these promising results, not all HCC patients respond to immunotherapy equally. There is a need to search for reliable prognostic and predictive biomarkers that can help predict which patients are most likely to benefit from immunotherapy, thereby personalizing treatment and improving outcomes. The purpose of this article is to provide a summary of clinical trials on immunotherapy for various stages of hepatocellular carcinoma.

• MeSH
• hepatocelulární karcinom * farmakoterapie   MeSH
• imunoterapie * MeSH
• inhibitory kontrolních bodů terapeutické užití   MeSH
• klinické zkoušky jako téma MeSH
• lidé MeSH
• monoklonální protilátky terapeutické užití   MeSH
• nádory jater farmakoterapie   MeSH
• protokoly antitumorózní kombinované chemoterapie MeSH
• sorafenib terapeutické užití   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• přehledy MeSH