Anna Brunn

University Hospital Düsseldorf and Medical Faculty of Heinrich-Heine University Düsseldorf

Contrast-enhanced MRI is the method of choice for brain tumor diagnostics, despite its low specificity for tumor tissue. This study compared the contribution of MR spectroscopic imaging (MRSI) and amino acid PET to improve the detection of tumor tissue. Methods: In 30 untreated patients with suspected glioma, O-(2-[18F]fluoroethyl)-l-tyrosine (18F-...

Inclusion body myositis (IBM) is unique across the spectrum of idiopathic inflammatory myopathies (IIM) due to its distinct clinical presentation and refractoriness to current treatment approaches. One explanation for this resistance may be the engagement of cell-autonomous mechanisms that sustain or promote disease progression of IBM independent o...

Objective The molecular characteristics of sporadic inclusion body myositis (sIBM) have been intensively studied, and specific patterns on the cellular, protein and RNA level have emerged. However, these characteristics have not been studied in the context of HIV-associated IBM (HIV-IBM). In this study, we compared clinical, histopathological, and...

A hallmark of primary lymphoma of the central nervous system (PCNSL, CNS) is the strong CXCR4 expression of the tumor cells, the function of which is still unknown. In vitro treatment of BAL17CNS lymphoma cells by AMD3100 which inhibits CXCR4-CXCL12 interactions resulted in the significantly differential expression of 273 genes encoding proteins in...

The prospective phase 2 REGOMA trial suggested considerable survival benefits of the oral multikinase inhibitor regorafenib for treating patients with recurrent glioblastoma.¹ For response assessment, the criteria of the Response Assessment in Neuro-Oncology (RANO) Working Group for anatomical MRI are used in daily routine and clinical trials.² Nev...

Currently, contrast-enhanced MRI is the method of choice for treatment planning and follow-up in patients with meningioma. However, positron emission tomography (PET) imaging of somatostatin receptor subtype 2 (SSTR2) expression using ⁶⁸Ga-DOTATATE may provide a higher sensitivity for meningioma detection, especially in cases with complex anatomy o...

The development of clustered regulatory interspaced short palindromic repeats/CRISPR associated protein 9 (CRISPR-Cas9)-mediated gene modification has opened an exciting avenue of targeting genes to study the pathogenesis of diseases and to develop novel therapeutic concepts. However, as the effector protein Cas9 is of bacterial origin, unwanted si...

Background The phase 2 REGOMA trial suggested an encouraging overall survival benefit in glioblastoma patients at first relapse treated with the multikinase inhibitor regorafenib. Here, we evaluated the efficacy and side effects of regorafenib in a real-life setting. Methods From 2018 to 2021, 30 patients with progressive WHO CNS grade 3 or 4 glio...

Background The BRAF V600E mutation is present in approximately 50% of patients with melanoma brain metastases and an important prerequisite for response to targeted therapies, particularly BRAF inhibitors. As heterogeneity in terms of BRAF mutation status may occur in melanoma patients, a wild-type extracranial primary tumor does not necessarily ru...

Primary lymphoma of the central nervous system (PCNSL, CNS) is a specific diffuse large B cell lymphoma (DLBCL) entity confined to the CNS. Key to its pathogenesis is a failure of B cell differentiation and a lack of appropriate control at differentiation stages before entrance and within the germinal center (GC). Self-/polyreactive B cells rescued...

BACKGROUND The REGOMA phase 2 trial showed an encouraging overall survival benefit of the multikinase inhibitor regorafenib in glioblastoma patients at first progression. We used O-(2-[18F]fluoroethyl)-L-tyrosine (FET) PET for the early assessment of response to regorafenib in patients with progressive glioma in an advanced disease stage. METHODS...

BACKGROUND Following brachytherapy, the differentiation of radiation-induced changes (e.g., radiation necrosis) from actual tumor progression using MRI is challenging. To overcome this diagnostic uncertainty, we evaluated the diagnostic value of O-(2-[18F]-fluoroethyl)-L-tyrosine (FET) PET in glioma patients treated with brachytherapy. MATERIAL AN...

In neuron-specific ovalbumin-transgenic CKTAC mice, antigen-specific OT-I CD8 T cells home to the enteric nervous system where they attack and destroy neurons of the myenteric and submucosal plexus. Clinically, experimental autoimmune enteric ganglionitis (EAEG) manifests with gastrointestinal dysmotility rapidly progressing to lethal ileus. While...

Based on gene expression profiles, diffuse large B-cell lymphoma (DLBCL) is subdivided into germinal center B-cell–like (GCB) and activated B-cell–like (ABC) DLBCL. Two of the most common genomic aberrations in ABC-DLBCL are mutations in MYD88 as well as BCL2 copy-number gains. Here, we employ immune phenotyping, RNA sequencing, and whole-exome seq...

In newly diagnosed systemic diffuse large B cell lymphoma (DLBCL) next generation sequencing of plasma derived cell free DNA (cfDNA) detects somatic mutations as accurate as genotyping of the tumor biopsy. A distinct DLBCL entity confined to the central nervous system (CNS) is primary CNS lymphoma (PCNSL), which requires intracerebral biopsy and ne...

The immunoglobulin (Ig) heavy and light chain variable gene mutational pattern of the B cell receptor (BCR) in primary central nervous system (CNS) lymphoma (PCNSL) cells suggests antigenic selection to drive pathogenesis and confinement to the CNS. This hypothesis is supported by the observation that the tumor B cell receptor (tBCR) of PCNSL is po...

Dendritic cells (DCs) are indispensable for defense against pathogens but may also contribute to immunopathology. Activation of DCs upon the sensing of pathogens by Toll-like receptors (TLRs) is largely mediated by pattern recognition receptor/nuclear factor-κB (NF-κB) signaling and depends on the appropriate ubiquitination of the respective signal...

Leptomeningeal carcinomatosis is an extremely rare, but devastating complication in pancreatic cancer patients with a poor prognosis despite multimodal treatment. We present a 51-year-old male patient with the very rare condition of leptomeningeal carcinomatosis originating from pancreatic cancer. He presented to our hospital with severe headache a...

Congenital myopathies (CM) form a genetically heterogeneous group of disorders characterized by perinatal muscle weakness. Here, we report an 11-year old male offspring of consanguineous parents of Lebanese origin. He presented with proximal weakness including Gower’s sign, and skeletal muscle biopsy revealed myopathic changes with core-like struct...

Congenital myopathies (CM) form a genetically heterogeneous group of disorders characterized by perinatal muscle weakness. Here, we report an 11-year old male offspring of consanguineous parents of Lebanese origin. He presented with proximal weakness including Gower's sign, and skeletal muscle biopsy revealed myopathic changes with core-like struct...

Loss of skeletal muscle mass is one of the most widespread and deleterious processes in aging humans. However, the mechanistic metabolic principles remain poorly understood. In the framework of a multi-organ investigation of age-associated changes of ceramide species, a unique and distinctive change pattern of C16:0 and C18:0 ceramide species was d...

The advent of immunotherapy using immune checkpoint inhibitors (ICI) and targeted therapy (TT) has dramatically improved the prognosis of various cancer types. Following ICI therapy or TT, either alone (especially ICI) or in combination with radiotherapy, however, imaging findings on anatomical contrast-enhanced MRI can be unpredictable, highly var...

A variety of neoplastic and nonneoplastic conditions involve the corpus callosum, which may result in a "butterfly" appearance on conventional MRI. Typically, that pattern shows a bilateral and heterogeneous contrast enhancement of the lesion, occasionally with central nonenhancing areas indicating intralesional necrosis. In contrast, anaplastic gl...

Astrocytes are critical regulators of neuroinflammation in multiple sclerosis (MS) and its animal model experimental autoimmune encephalomyelitis (EAE). Growing evidence indicates that ubiquitination of signaling molecules is an important cell-intrinsic mechanism governing astrocyte function during MS and EAE. Here, we identified an upregulation of...

We here report findings on magnetic resonance imaging from a 60-year-old patient with an epithelioid glioblastoma of the corpus callosum treated with radiotherapy in combination with concomitant and adjuvant temozolomide. Neuropathology revealed a highly aggressive molecular subtype of the epithelioid glioblastoma without an isocitrate dehydrogenas...

Increasing evidence suggests a role of CD8 T cells in autoimmune demyelinating CNS disease, which, however, is still controversially discussed. Mice, which express ovalbumin (OVA) as cytosolic self‐antigen in oligodendrocytes (ODC‐OVA mice), respond to CNS infection induced by OVA‐expressing attenuated Listeria with CD8 T cell‐mediated inflammatory...

Inflammatory bowel diseases frequently cause gastrointestinal dysmotility, suggesting that they may also affect the enteric nervous system. So far, the precise mechanisms that lead to gastrointestinal dysmotility in inflammatory bowel diseases have not been elucidated. To determine the effect of CD8 T cells on gastrointestinal motility, transgenic...

Kongenitale myasthene Syndrome (CMS) stellen eine heterogene Gruppe von Erkrankungen dar, die mit einem breiten Spektrum von Phänotypen einhergehen, aber alle auf vererbte Defekte an der motorischen Endplatte zurückzuführen sind. Auch wenn einige Patienten bisher (noch) nicht genetisch charakterisiert werden können, hat die zunehmende Identifizieru...

Mutations in the Nebulin gene (NEB) may cause core-rod myopathy. The large size of the gene so far prevented inclusion of its routine analysis by didesoxy resequencing methodology in the diagnostic regime for muscular dystrophy cases. Here we report a 54-year-old female with a rare histological myopathy presentation of co-occurring cores and rods....

Novel therapeutic targets in malignant glioma patients are urgently needed. Point mutations of the v-Raf murine sarcoma viral oncogene homolog B (BRAF) gene occur predominantly in melanoma patients, but may also occur in gliomas. Thus, this is a target of great interest for this group of patients. In a nine-year-old male patient, an anaplastic astr...

In skeletal muscle the coordinated actions of two mechanically coupled Ca²⁺ channels—the 1,4-dihydropyridine receptor (Cav1.1) and the type 1 ryanodine receptor (RYR1)–underlie the molecular mechanism of rapid cytosolic [Ca²⁺] increase leading to contraction. While both [Ca²⁺]i and contractile activity have been implicated in the regulation of myog...

Cav1.1 splice variants in WT and RYR1-/- skeletal muscle. Original photographs of agarose gels used for the analysis of PCR products of the full-length (343 bp) and Δ29 (286 bp) Cav1.1 splice variants in WT (A), and in RYR1-/- (B) animals at E14.5 (A and B, lanes 1–6) and E18.5 (A and B, lanes 8–13). (A and B) Lane 7—O’Gene Ruler Mix DNA ladder. (T...

RNA agarose gels. The integrity of the RNA samples used in the MA analyses was evaluated by subjecting 250 ng or 500 ng of each sample to electrophoretic runs on 2% agarose gels next to 2 μl of RiboRuler High Range RNA Ladder (Thermo Fisher Scientific). The genotypes of the mice are represented as follows: +/+ stands for WT, +/-—for heterozygous mu...

GO BP enrichment analyses of RYR1-/- or Cav1.1-/- vs. WT at E18.5. (XLSX)

DEGs for “Extracellular Matrix Organization” heatmap of RYR1-/- vs. WT at E18.5. (XLSX)

GO BP enrichment analyses of RYR1-/- or Cav1.1-/- vs. WT at E14.5. (XLSX)

DEGs in RYR1-/- or Cav1.1-/- vs. WT at E18.5 involved in signaling pathways. (XLSX)

DEGs for “Muscle contraction” heatmap of RYR1-/- and Cav1.1-/- vs. WT at E18.5. (XLSX)

GO BP and WP analyses of all DEGs in WT, RYR1-/- or Cav1.1-/- for E18.5 vs. E14.5. (XLSX)

GO BP and WP analyses of unique DEGs in WT, RYR1-/- or Cav1.1-/- for E18.5 vs. E14.5. (XLSX)

All detected DEGs from the MAs from all performed comparisons. (XLSX)

DEGs for “Acylglycerol Metabolic Process” heatmap of Cav1.1-/- vs. WT at E18.5. (XLSX)

qRT-PCR analyses of putative endogenous controls. The relative expression levels of Gapdh, Actb, Rplp0, Uba52 and CytB (used as endogenous control) were measured via qRT-PCRs for WT E18.5 vs. E14.5 samples (A), as well as for RYR1-/- vs. WT (B and C) and for Cav1.1-/- vs. WT (D and E) at E14.5 and E18.5. Expression levels of control samples (blue b...

DEGs for heatmaps of RYR1-/- or Cav1.1-/- vs. WT at E14.5. (XLSX)

Background: Small fiber neuropathy (SFN) is a challenging subtype of peripheral neuropathies. Once the diagnosis has been established, there is an uncertainty how SFN may progress, whether larger fibers will become involved over time, whether quality of life may be compromised, or whether repeated diagnostic workup in patients with unknown underly...

Congenital myasthenic syndromes (CMS) are a heterogenic group of mainly recessive inherited loss-of-function mutations of different molecular structures of the motor endplate leading to a defective neuromuscular transmission. They typically present in early childhood with ocular, bulbar and fatigable proximal muscle weakness. Occasionally symptoms...

Background Small fiber neuropathy (SFN) represents a subtype of peripheral neuropathies. As only small A-delta and C-fibers are involved patients suffer from typical clinical symptoms such as hypesthesia, burning and prickling sensations, temperature disturbance perception or autonomic symptoms without any signs of large fiber involvement. Thus ele...

Objective: To identify the most relevant antigens for monoclonal antibodies in lymphocytic infiltrates in non-systemic vasculitic neuropathy (NSVN). Background: Current immunosuppressive treatment for NSVN is insufficient. Monoclonal antibodies might be a treatment option, but the expression profile for targetable antigens on lymphocytic infiltr...

Chronic inflammatory demyelinating polyneuropathy (CIDP) is a chronic progressive or relapsing autoimmune neuropathy with heterogeneous clinical presentation. Symptoms typically include symmetrical, proximal and/or distal paresis and sensory loss. Atypical CIDP variants are increasingly recognized, including subtypes with rapid onset as well as var...

The functional relevance of the innate immune system has not yet been dissected in P0106-125-induced murine experimental autoimmune neuritis. Therefore, the role of Toll-like receptor (TLR) 2, TLR4, myeloid differentiation response gene 88, and TRIF, factors critically involved in the TLR signaling pathway, was studied in experimental autoimmune ne...

Pediatric oncology has achieved major progress by continuous optimization of diagnostic and therapeutic approaches. In the interdisciplinary team, the ophthalmologist plays an important role. In the field of strabismus and neuro-ophthalmology clinical symptoms as strabismus, visual loss, anisocoria, visual field defects, and involuntary eye movemen...

Primary central nervous system (CNS) lymphoma (PCNSL) is a mature lymphoma of the diffuse large B-cell lymphoma (DLBCL) type confined to the CNS. Despite cytomorphological similarities between PCNSL and systemic DLBCL, molecular differences between both entities have been identified. The exclusively topographical restriction of PCNSL to the CNS is...

In mature skeletal muscle, the intracellular Ca2+ concentration rises dramatically upon membrane depolarization, constituting the link between excitation and contraction. This process requires Ca2+ release from the sarcoplasmic reticulum via the type 1 ryanodine receptor (RYR1). However, RYR1’s potential roles in muscle development remain obscure....

In an interesting letter, Spies et al. provide further evidence that tumor cells of primary CNS lymphoma (PCNSL) react with resident CNS cells via their BCR. In accordance with our ProtoArray data, which have revealed that recAb identical with BCRs of PCNSL tumor cells recognize neuronal proteins ([

The immunoregulatory cytokine IL-10 suppresses T-cell immunity. The complementary question, whether IL-10 is also involved in limiting the collateral damage of vigorous T cell responses, has not been addressed in detail. Here, we report that the particularly strong virus-specific immune response during acute primary infection with the lymphocytic c...

Primary lymphoma of the CNS (PCNSL) is a diffuse large B cell lymphoma confined to the CNS. To elucidate its peculiar organ tropism, we generated recombinant Abs (recAbs) identical to the BCR of 23 PCNSLs from immunocompetent patients. Although none of the recAbs showed self-reactivity upon testing with common autoantigens, they recognized 1547 pro...

History and presentation at admission | A 25-year-old male patient presented with acute left sided chest pain. The patient reported no physical exercise but daytime fasting (with neither food nor liquid intake) which he had started several days before. Investigations | ECG, echocardiography and chest X-ray were normal, but blood examination reveale...

The role of the type 2 helper T cell (Th2)-polarizing cytokines IL-4 and IL-10 has not yet been studied in P0106-125-induced murine experimental autoimmune neuritis (EAN). We, therefore, addressed the functional relevance of these cytokines and signaling via the IL-4-associated transcription factor STAT6. The clinical course of P0106-125-induced EA...

Primary lymphoma of the central nervous system is a distinct diffuse large B-cell lymphoma confined to the nervous system. Whereas classical cases can be classified easily, differential diagnosis can be a challenge in particular in patients who had received treatment prior to biopsy. In the differential diagnosis, other tumours and inflammatory dis...

Myelin protein 0 peptide 106-125-induced murine experimental autoimmune neuritis (EAN) is a CD4-positive T cell-mediated monophasic axonal inflammatory neuropathy; interferon-γ is the key proinflammatory mediator. Experimental autoimmune neuritis is well suited for elucidating pathogenetic mechanisms underlying human acute axonal Guillain-Barré syn...

Primary lymphoma of the central nervous system (CNS, PCNSL) is a specific diffuse large B cell lymphoma entity arising in and confined to the CNS. Despite extensive research since many decades, the pathogenetic mechanisms underlying the remarkable tropism of this peculiar malignant hematopoietic tumor remain still to be elucidated. In the present r...

Primary lymphoma of the central nervous system (PCNSL) is defined as lymphoma of the diffuse large B-cell type confined to the CNS. To understand the effects of the CNS microenvironment on the malignant B cells and their interactions with the cells of the target organ, we analyzed a syngeneic mouse model. Transplantation of BAL17 cells into the fro...

The differential diagnosis of lymphoid lesions in the central nervous system covers a broad spectrum of neoplastic and inflammatory disorders. Complex cases benefit from the combined expertise in the fields of hematopoietic and neuroepithelial tumors as well as neuroimmunology. The Network Lymphomas and Lymphomatoid Lesions in the Nervous System (N...

Aim: The role of chemokines and their receptors, which regulate trafficking and homing of leucocytes to inflamed organs in human or murine autoimmune neuritis, has not yet been elucidated in detail, Therefore, the role of the chemokine receptors CXCR4 and CXCR7 and their ligand CXCL12 was studied in autoimmune-mediated inflammation of the peripher...

Abstract Background: Listeria monocytogenes usually causes mild maternal illness, but can be devastating to the fetus. Case: Listeriosis in a pregnant patient successfully treated with empiric antibiotic therapy is described. After induced delivery, despite severe placental infection, a healthy infant was born. Additionally, archived placental spec...

The roles of Toll-like receptors (TLRs) and their myeloid differentiation response gene 88 (MyD88)-dependent and MyD88-independent signaling cascade particularly with regard to the pathogenesis and regulation of immune responses in idiopathic inflammatory myopathies are unclear. We investigated these pathways in muscle biopsies from 5 cases each of...

The obligate intracellular parasite Toxoplasma gondii infects and persists within neurons of approximately one-third of the human population. Intracerebral control of T. gondii largely depends on interferon (IFN)-γ-producing T cells, which induce antiparasitic effector mechanisms in infected cells, as well as immunosuppressive cytokines, which prev...

Electromyography is an important element of clinical diagnostics and often helps physicians to find the appropriate diagnosis between different neuromuscular disorders. By having a closer look on electromyographical findings in myasthenia gravis, myopathic changes predominantly occur in proximal muscles next to a pathological decrement, which can u...

Astrocytes are activated in experimental autoimmune encephalomyelitis (EAE) and have been suggested to either aggravate or ameliorate EAE. However, the mechanisms leading to an adverse or protective effect of astrocytes on the course of EAE are incompletely understood. To gain insight into the astrocyte-specific function of gp130 in EAE, we immuniz...

Reliable detection of leptomeningeal disease has the potential of facilitating the diagnosis of central nervous system (CNS) lymphoma and is important for therapeutic considerations. Currently, the standard diagnostic procedure for the detection of lymphoma in the cerebrospinal fluid is cytopathology. To improve the limited specificity and sensitiv...

The role of B cells in autoimmune-mediated diseases of the peripheral nervous system was studied in experimental autoimmune neuritis (EAN) in B cell deficient IgH0/0 C57BL/6J mice having been immunized with P0106–125 peptide. Compared to coisogenic IgH+/+ mice, onset of EAN was accelerated [100% disease incidence at day 9 post immunization (p.i.) v...

Primary CNS lymphoma (PCNSL), the intracerebral subgroup of diffuse large B cell lymphoma (DLBCL), shows evidence for aberrant activation of the nuclear factor (NF)-kappaB pathway. In order to identify potential activators of the NF-kappaB complex, we analyzed the CARD11 and TNFAIP3 genes for the presence of somatic mutations and TNFAIP3 for aberra...

We present two patients with glioblastoma with an unusually stable clinical course and long-term survival who were treated after surgery and radiotherapy with adjuvant temozolomide (TMZ) chemotherapy for 17 and 20 cycles, respectively. Afterward, adjuvant TMZ chemotherapy was discontinued in one patient and the dosage of TMZ was reduced in the othe...

In T-cell-mediated autoimmune diseases of the central nervous system (CNS), CD4 T cells have long been regarded as the only pathogenetically relevant T-cell population. However, growing clinical and experimental evidence suggests that CD8 T cells also contribute significantly to autoimmune responses in the CNS. We discuss the potential induction of...

Methyl-L-(11)C-methionine ((11)C-MET) PET has been shown to detect brain tumors with a high sensitivity and specificity. In this study, we investigated the potential of (11)C-MET PET to noninvasively detect tumor progression in patients with gliomas. Moreover, we analyzed the relationship between changes in (11)C-MET uptake on PET and changes in va...

Forkhead box P1 (FOXP1) protein is a transcription factor involved in cell signaling and regulation of gene expression. The overexpression of FOXP1 in a subgroup of systemic diffuse large B-cell lymphomas has been associated with an exceptionally poor clinical outcome. Data on FOXP1 expression in primary central nervous system lymphomas (PCNSL), th...

Inflammatory myopathy with abundant macrophages (IMAM) and dermatomyositis (DM) are considered to represent related disorders, since they share inflammatory infiltrates and skin alterations. In order to get more insight into these disorders, we addressed the cellular composition of the inflammatory infiltrates in muscle biopsies of 11 patients with...

To determine the pattern of genetic alterations in primary central nervous system lymphomas (PCNSL), 19 PCNSL were studied by high-density single-nucleotide polymorphism arrays. Recurrent losses involved 6p21.32, 6q21, 8q12-12.2, 9p21.3, 3p14.2, 4q35.2, 10q23.21 and 12p13.2, whereas gains involved 18q21-23, 19q13.31, 19q13.43 and the entire chromos...

The objective of this work was to present possible, though rare, complications of Neuro-Patch implantation after brain surgery. Two patients, aged 62 and 63 years, who had a partial dural substitution with an artificial polyurethane graft after neurosurgical resection of a gross tumour, are presented. In the two patients, the a-vital tissue was inf...

Rosai-Dorfman disease is an idiopathic, histoproliferative disorder characterized by massive painless lymphadenopathy. The favorable treatment of Rosai-Dorfman disease affecting the central nervous system is surgical resection. Histological and immunohistochemical confirmation is essential for a definitive diagnosis. The authors report on a 10-year...

Toxoplasma gondii infects astrocytes, neurons and microglia cells in the CNS and, after acute encephalitis, persists within neurons. Robust astrocyte activation is a hallmark of Toxoplasma encephalitis (TE); however, the in vivo function of astrocytes is largely unknown. To study their role in TE we generated C57BL/6 GFAP-Cre gp130(fl/fl) mice (whe...

The pathogenesis of inflammatory autoimmune diseases of the peripheral nervous system, leading to demyelination and/or axonal damage, remains incompletely understood. In particular, it is controversial regarding the extent to which (i) autoimmune-mediated destruction of peripheral nerves results in secondary damage of the central nervous system, an...

Primary lymphomas of the CNS (PCNSLs) show molecular features of the late germinal center exit B-cell phenotype and are impaired in their terminal differentiation as indicated by a lack of immunoglobulin class switching. Because the positive regulatory domain I protein with ZNF domain (PRDM1/BLIMP1) is a master regulator of terminal B-cell differen...

To identify basic mechanisms of how infections may induce a neuron-specific autoimmune response, we generated mice expressing OVA as neuronal autoantigen under control of the neuron-specific enolase promoter (NSE-OVA mice). Intracerebral, but not systemic, infection with attenuated Listeria monocytogenes-secreting OVA induced an atactic-paretic neu...

To characterize the molecular origin of primary lymphomas of the central nervous system (PCNSL), 21 PCNSLs of immunocompetent patients were investigated by microarray-based gene expression profiling. Comparison of the transcriptional profile of PCNSL with various normal and neoplastic B-cell subsets demonstrated PCNSL (i) to display gene expression...

The expression pattern of a subset of chemokines and their corresponding receptors was investigated in primary central nervous system lymphomas (PCNSL). The tumor cells consistently expressed CXCR4, CXCL12, CXCR5, and CXCL13, both at mRNA and protein levels. Cerebral endothelial cells were positive for CXCL12 and CXCL13, while reactive astrocytes a...

Recent studies point to a role of nuclear factor (NF)-kappaB signaling in a subset of diffuse large B cell lymphomas. We have analyzed the expression of 21 genes encoding NF-kappaB family members, upstream modulators, and targets in 32 primary central nervous system lymphomas (PCNSLs) by quantitative reverse transcriptase-polymerase chain reaction...