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Effective targeting of tumor vasculature by the angiogenesis inhibitors vasostatin and interleukin-12.

Solid tumors are dependent on preexisting vasculature and neovascularization for their growth. Successful cancer therapies targeting the tumor vasculature would be expected to block the existing tumor blood supply and to prevent tumor neovascularization. We tested the antitumor activity of experimental therapy with 2 distinct antiangiogenic drugs. Vasostatin inhibits endothelial cell growth and neovascularization, and interleukin-12 (IL-12) targets the tumor vasculature acting through interferon-gamma (IFN-gamma) and the downstream chemokines interferon-inducible protein-10 (IP-10) and monokin

Towards frailty biomarkers: Candidates from genes and pathways regulated in aging and age-related diseases.

OBJECTIVE: Use of the frailty index to measure an accumulation of deficits has been proven a valuable method for identifying elderly people … 15), FNDC5 (fibronectin type III domain containing 5), vimentin (VIM), (3) regucalcin (RGN/SMP30), calreticulin, (4) PLAU (plasminogen activator, urokinase), AGT (angiotensinogen), (5) BDNF (brain derived neurotrophic factor), progranulin (PGRN), (6) α-klotho (KL), FGF23 (fibroblast growth factor 23), FGF21, leptin (LEP), (7) miRNA (micro Ribonucleic acid) pa …

The regulation of normal and neoplastic hematopoiesis is dependent on microenvironmental cells.

Each day the adult human produces 4 × 1011 red blood cells, 1 × 1011 white blood cells and 1 × 1011 platelets, levels of production which ca … e "Jak2V617F negative" MPNs, including the thrombopoietin receptor, c-MPL, other mutations of Jak2, calreticulin and a variety of epigenetic modifier genes (e.g. TET2). Using a cell-specific Cre recombinase and SCT techniques we can introduce Jak2V617F into murine megakaryocytes and platelets, hematopoietic stem cells, and endothelial cells, alone or in combin …

[Analysis of clinical characteristics and risk factors for recurrence of combined EB virus infection in patients with inflammatory bowel disease treated with biological agents].

To investigate the degrees of EB virus reactivation in patients with inflammatory bowel disease (IBD) treated with different biologics and t … cytokine 8 (IL-2, IL-4, IL-6, IL-10, IL-12p70, IL-17, TNF-α, IFN-γ), C-reactive protein, and fecal calreticulin, to find the risk variable associated with treatment relapse. Logistic regression was used to analyze the relative risk between this variable and treatment relapse, and ROC curves were used to predict the diagnostic efficacy of cytokine multifactori …

Photodynamic Therapy Combined with Gemcitabine for Prostate Cancer Using Nanoprobe for in-vivo CEST Imaging.

BACKGROUND: Current clinical treatment is confronted with challenges such as low drug delivery efficiency, lagging efficacy evaluation, and … , the amounts of inflammatory factors such as interleukin-1β (IL-1β) and IL-18 were determined, and calreticulin was detected via immunofluorescence. CRT and high mobility group box 1 protein (HMGB1) were used to evaluate pyroptosis-mediated immunogenic cell death (ICD) effects. A mouse prostate cancer tumor model was constructed to observe the CEST-specific a …

AlphaFold2 SLiM screen for LC3-LIR interactions in autophagy.

In selective macroautophagy/autophagy, cargo recruitment is mediated by MAP1LC3/LC3-interacting regions (LIRs)/Atg8-family interacting motif … BNIP3: BCL2 interacting protein 3; CALCOCO2/NDP52: calcium binding and coiled-coil domain 2; CALR: calreticulin; can. LIR: canonical LIR; CDF: cumulative distribution function; CDK5RAP3/C53 (H.s.): CDK5 regulatory subunit associated protein 3; [DE]W[DE]-LIR: TRIM5-like ncLIR; DSK2A: ubiquitin domain-containing protein DSK2a; FUNDC1: FUN14 domain containing 1; …

Clinical and molecular response to interferon-α therapy in essential thrombocythemia patients with CALR mutations.

Myeloproliferative neoplasms are clonal disorders characterized by the presence of several gene mutations associated with particular hematologic parameters, clinical evolution, and prognosis. Few therapeutic options are available, among which interferon α (IFNα) presents interesting properties like the ability to induce hematologic responses (HRs) and molecular responses (MRs) in patients with JAK2 mutation. We report on the response to IFNα therapy in a cohort of 31 essential thrombocythemia (ET) patients with CALR mutations (mean follow-up of 11.8 years). HR was achieved in all patients. Med

Inhibition of corneal angiogenesis by local application of vasostatin.

PURPOSE: This study was designed to investigate the effects of the locally supplied endogenous angiogenesis inhibitor vasostatin (VS) on corneal angiogenesis. METHODS: Recombinant VS was expressed and purified. The effects of VS on the proliferation of endothelial cells were investigated using the methyl thiazolyl tetrazolium (MTT) assay in the absence or presence of angiogenic factors such as basic fibroblast growth factor (bFGF) or vascular endothelial growth factor (VEGF). Corneal neovascularization was induced by implantation of hydron pellets containing bFGF in rat corneal micropockets.

Cytokine receptor and JAK/STAT pathway mutations in acute myeloid leukemia: Prevalence and clinical impact.

BACKGROUND: Mutations in cytokine receptor and JAK/STAT; Cy-JAK/STAT) signaling genes drive myeloproliferative neoplasms (MPNs) but remain incompletely characterized in acute myeloid leukemia (AML). The authors evaluated the prevalence, clinical presentation, and prognostic significance of Cy-JAK/STAT pathway mutations in patients with AML and compared outcomes across disease ontogeny. METHODS: In total, 971 adults with newly diagnosed AML who were treated at the Cleveland Clinic between January 2015 and September 2023 were retrospectively analyzed. Baseline next-generation sequencing was que

Ph(-) myeloproliferative neoplasm red blood cells display deregulation of IQGAP1-Rho GTPase signaling depending on CALR/JAK2 status.

Besides genetic abnormalities in MPN patients, several studies have reported alterations in protein expression that could contribute towards the clinical phenotype. However, little is known about protein modifications in Ph- MPN erythrocytes. In this context, we used a quantitative mass spectrometry proteomics approach to study the MPN erythrocyte proteome. LC-MS/MS (LTQ Orbitrap) analysis led to the identification of 51 and 86 overexpressed proteins in Polycythemia Vera and Essential Thrombocythemia respectively, compared with controls. Functional comparison using pathway analysis software sh

Resistance to anticancer vaccination effect is controlled by a cancer cell-autonomous phenotype that disrupts immunogenic phagocytic removal.

OBJECTIVE: To characterize levetiracetam pharmacokinetics, identify significant covariate relationships and identify doses in children that achieve blood concentrations similar to those observed in adults. METHODS: Nonlinear mixed-effects modelling was used to analyse pooled data collected from 228 children with epilepsy aged 3 months to 18 years in five trials of adjunctive levetiracetam therapy. Simulations were used to identify dosing regimens achieving levetiracetam steady-state peak and trough plasma concentrations similar to those attained in adults receiving the recommended starting do

[The immunologic homunculus in rheumatoid arthritis. A new viewpoint of immunopathogenesis in rheumatoid arthritis and therapeutic consequences].

Autoreactivity plays a major role in the pathogenesis of RA. The rheumatoid factor has been and still is for now more than 50 years the only … A-relevant autoantigens comprise BiP, citrulline, the Sa-antigen, hnRNP A2, p205, IgG, calpastatin, calreticulin, collagen and the shared HLA-DR epitope. The accumulation of factor--involving autoreactivities, cytokines, environmental and genetic factors--that challenge the normal regulatory mechanisms of the immune system lead to a regulatory catastrophe. In …

Defective intracellular trafficking of uromodulin mutant isoforms.

Medullary cystic kidney disease/familial juvenile hyperuricemic nephropathy (MCKD/FJHN) are autosomal dominant renal disorders characterized by tubulo-interstitial fibrosis, hyperuricemia and medullary cysts. They are caused by mutations in the gene encoding uromodulin, the most abundant protein in urine. Uromodulin (or Tamm-Horsfall protein) is a glycoprotein that is exclusively expressed by epithelial tubular cells of the thick ascending limb of Henle's loop and distal convoluted tubule. To date, 37 different uromodulin mutations have been described in patients with MCKD/FJHN. Interestingly,

Effect of conditioning regimens on graft failure in myelofibrosis: a retrospective analysis.

In myelofibrosis, the introduction of reduced-intensity conditioning (RIC) preceding allogeneic stem cell transplantation (SCT) resulted in lower transplant-related mortality rates compared with myeloablative conditioning. However, lowering the intensity of conditioning may increase the risk of graft failure in myelofibrosis, although hitherto this has not been indisputably proven. We here report the outcome of 53 patients who underwent allogeneic SCT with different conditioning regimens (RIC and non-myeloablative (NMA)) in three transplantation centers in the Netherlands. The cumulative incid

Cystic fibrosis airway epithelial Ca2+ i signaling: the mechanism for the larger agonist-mediated Ca2+ i signals in human cystic fibrosis airway epithelia.

In cystic fibrosis (CF) airways, abnormal epithelial ion transport likely initiates mucus stasis, resulting in persistent airway infections and chronic inflammation. Mucus clearance is regulated, in part, by activation of apical membrane receptors coupled to intracellular calcium (Ca(2+)(i)) mobilization. We have shown that Ca(2+)(i) signals resulting from apical purinoceptor (P2Y(2)-R) activation are increased in CF compared with normal human airway epithelia. The present study addressed the mechanism for the larger apical P2Y(2)-R-dependent Ca(2+)(i) signals in CF human airway epithelia. We

Genetic variation at MECOM, TERT, JAK2 and HBS1L-MYB predisposes to myeloproliferative neoplasms.

Clonal proliferation in myeloproliferative neoplasms (MPN) is driven by somatic mutations in JAK2, CALR or MPL, but the contribution of inherited factors is poorly characterized. Using a three-stage genome-wide association study of 3,437 MPN cases and 10,083 controls, we identify two SNPs with genome-wide significance in JAK2(V617F)-negative MPN: rs12339666 (JAK2; meta-analysis P=1.27 × 10(-10)) and rs2201862 (MECOM; meta-analysis P=1.96 × 10(-9)). Two additional SNPs, rs2736100 (TERT) and rs9376092 (HBS1L/MYB), achieve genome-wide significance when including JAK2(V617F)-positive cases. rs9376

Cancer Immune Therapy for Philadelphia Chromosome-Negative Chronic Myeloproliferative Neoplasms.

Philadelphia chromosome-negative chronic myeloproliferative neoplasms (MPN) are neoplastic diseases of the hematopoietic stem cells in the bone marrow. MPN are characterized by chronic inflammation and immune dysregulation. Of interest, the potent immunostimulatory cytokine interferon-α has been used to treat MPN for decades. A deeper understanding of the anti-cancer immune response and of the different immune regulatory mechanisms in patients with MPN has paved the way for an increased perception of the potential of cancer immunotherapy in MPN. Therapeutic vaccination targeting the driver mut

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… Immunosuppression by Mutated Calreticulin Released from Malignant Cells Article Immunosuppression by Mutated Calreticulin Released from Malignant Cells Mol. Cell 2020 77 748 760 10.1016/j.molcel.2019.11.004 31785928 83. Kroemer G. Galluzzi L. Kepp O. Zitvogel L. … Calreticulin exposure dictates the immunogenicity of cancer cell death Nat. Med. 2007 13 54 61 10.1038/nm1523 17187072 142. Obeid M. Tesniere A. Panaretakis T. Tufi R. Joza N. Van Endert P. Ghiringhelli F. Apetoh L. Chaput N. Flament C. Ecto-calreticulin in immunogenic chemotherapy Immunol. …

Restoring the Immunity in the Tumor Microenvironment: Insights into Immunogenic Cell Death in Onco-Therapies.

Immunogenic cell death (ICD) elicited by cancer therapy reshapes the tumor immune microenvironment. A long-term adaptative immune response can be initiated by modulating cell death by therapeutic approaches. Here, the major hallmarks of ICD, endoplasmic reticulum (ER) stress, and damage-associated molecular patterns (DAMPs) are correlated with ICD inducers used in clinical practice to enhance antitumoral activity by suppressing tumor immune evasion. Approaches to monitoring the ICD triggered by antitumoral therapeutics in the tumor microenvironment (TME) and novel perspective in this immune sy

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… Calreticulin Calreticulin (CRT) is a soluble protein related to the homeostatic Ca 2+ control of the cell. This biomolecule is a highly conserved protein of 46 kDa that was firstly associated with the ER where it plays a role as a chaperone, involved in the regulation of protein synthesis [ 19 ]. … Calreticulin: Non-endoplasmic reticulum functions in physiology and disease. FASEB J. 2010;24:665–683. doi: 10.1096/fj.09-145482. 22. Mesaeli N., Phillipson C. Impaired p53 expression, function, and nuclear localization in calreticulin-deficient cells. Mol. Biol. …

Dying of Stress: Chemotherapy, Radiotherapy, and Small-Molecule Inhibitors in Immunogenic Cell Death and Immunogenic Modulation.

Innovative strategies to re-establish the immune-mediated destruction of malignant cells is paramount to the success of anti-cancer therapy. Accumulating evidence suggests that radiotherapy and select chemotherapeutic drugs and small molecule inhibitors induce immunogenic cell stress on tumors that results in improved immune recognition and targeting of the malignant cells. Through immunogenic cell death, which entails the release of antigens and danger signals, and immunogenic modulation, wherein the phenotype of stressed cells is altered to become more susceptible to immune attack, radiother

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… Examples of DAMPs commonly generated during ICD include calreticulin (CRT), high mobility group box 1 (HMGB1), adenosine triphosphate (ATP), and type 1 interferons (IFN) [ 3 , 22 , 23 ]. … The co-translocation of ERp57 and calreticulin determines the immunogenicity of cell death. Cell Death Differ. 2008;15:1499–1509. doi: 10.1038/cdd.2008.67. 27. Obeid M. …