1
|
Zhao X, Dai M, Li N, Zhang J, Zhao X. Brain Nocardiosis Mimicking Intracerebral Invasion on 68 Ga-Pentixafor PET/CT in a Patient With Multiple Myeloma. Clin Nucl Med 2024; 49:e459-e461. [PMID: 38914120 DOI: 10.1097/rlu.0000000000005351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
ABSTRACT Brain nocardiosis is an uncommon but severe disease associated with high mortality. We present a case of brain nocardiosis with elevated tracer uptake on both 68 Ga-pentixafor and 18 F-FDG PET/CT, mimicking intracerebral invasion of multiple myeloma. This case demonstrates that nocardiosis should be considered in the differential diagnosis of brain lesions found on PET/CT with increased tracer accumulation in immunocompromised patients.
Collapse
Affiliation(s)
- Xiujuan Zhao
- From the Department of Nuclear Medicine, The Fourth Hospital of Hebei Medical University, Chang'an District, Shijiazhuang, Hebei, China
| | - Meng Dai
- From the Department of Nuclear Medicine, The Fourth Hospital of Hebei Medical University, Chang'an District, Shijiazhuang, Hebei, China
| | - Nuo Li
- From the Department of Nuclear Medicine, The Fourth Hospital of Hebei Medical University, Chang'an District, Shijiazhuang, Hebei, China
| | | | | |
Collapse
|
2
|
Samus M, Rot A. Atypical chemokine receptors in cancer. Cytokine 2024; 176:156504. [PMID: 38266462 DOI: 10.1016/j.cyto.2024.156504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/28/2023] [Accepted: 01/12/2024] [Indexed: 01/26/2024]
Abstract
Atypical chemokine receptors (ACKRs) are a group of seven-transmembrane spanning serpentine receptors that are structurally homologous to classical G-protein-coupled receptors and bind cognate chemokines with high affinities but do not signal via G-proteins or mediate cell migration. However, ACKRs efficiently modify the availability and function of chemokines in defined microanatomical environments, can signal via intracellular effectors other than G-proteins, and play complex roles in physiology and disease, including in cancer. In this review, we summarize the findings on the diverse contributions of individual ACKRs to cancer development, progression, and tumor-host interactions. We discuss how changes in ACKR expression within tumor affect cancer growth, tumor vascularization, leukocyte infiltration, and metastasis formation, ultimately resulting in differential disease outcomes. Across many studies, ACKR3 expression was shown to support tumor growth and dissemination, whereas ACKR1, ACKR2, and ACKR4 in tumors were more likely to contribute to tumor suppression. With few notable exceptions, the insights on molecular and cellular mechanisms of ACKRs activities in cancer remain sparse, and the intricacies of their involvement are not fully appreciated. This is particularly true for ACKR1, ACKR2 and ACKR4. A better understanding of how ACKR expression and functions impact cancer should pave the way for their future targeting by new and effective therapies.
Collapse
Affiliation(s)
- Maryna Samus
- Centre for Microvascular Research, William Harvey Research Institute, Queen Mary University of London, London EC1M 6BQ, UK
| | - Antal Rot
- Centre for Microvascular Research, William Harvey Research Institute, Queen Mary University of London, London EC1M 6BQ, UK; Institute for Cardiovascular Prevention, Ludwig-Maximilians University, Munich 80336, Germany.
| |
Collapse
|
3
|
Wilhelm A, Lemmenmeier I, Lalos A, Posabella A, Kancherla V, Piscuoglio S, Delko T, von Flüe M, Glatz K, Droeser RA. The prognostic significance of CXCR4 and SDF-1 in differentiated thyroid cancer depends on CD8+ density. BMC Endocr Disord 2022; 22:292. [PMID: 36419107 PMCID: PMC9686066 DOI: 10.1186/s12902-022-01204-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 11/07/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Tumor infiltration with cytotoxic CD8+ T-cells is associated with a favorable outcome in several neoplasms, including thyroid cancer. The chemokine axis CXCR4/SDF-1 correlates with more aggressive tumors, but little is known concerning the prognostic relevance in relation to the tumor immune microenvironment of differentiated thyroid cancer (DTC). METHODS A tissue microarray (TMA) of 37 tumor specimens of primary DTC was analyzed by immunohistochemistry (IHC) for the expression of CD8+, CXCR4, phosphorylated CXCR4 and SDF-1. A survival analysis was performed on a larger collective (n = 456) at RNA level using data from The Cancer Genome Atlas (TCGA) papillary thyroid cancer cohort. RESULTS Among the 37 patients in the TMA-cohort, the density of CD8+ was higher in patients with less advanced primary tumors (median cells/TMA-punch: 12.5 (IQR: 6.5, 12.5) in T1-2 tumors vs. 5 (IQR: 3, 8) in T3-4 tumors, p = 0.05). In the TCGA-cohort, CXCR4 expression was higher in patients with cervical lymph node metastasis compared to N0 or Nx stage (CXCR4high/low 116/78 vs. 97/116 vs. 14/35, respectively, p = 0.001). Spearman's correlation analysis of the TMA-cohort demonstrated that SDF-1 was significantly correlated with CXCR4 (r = 0.4, p = 0.01) and pCXCR4 (r = 0.5, p = 0.002). In the TCGA-cohort, density of CD8+ correlated with CXCR4 and SDF-1 expression (r = 0.58, p < 0.001; r = 0.4, p < 0.001). The combined marker analysis of the TCGA cohort demonstrated that high expression of both, CXCR4 and SDF-1 was associated with reduced overall survival in the CD8 negative TCGA cohort (p = 0.004). CONCLUSION These findings suggest that the prognostic significance of CXCR4 and SDF-1 in differentiated thyroid cancer depends on the density of CD8 positive T-lymphocytes. Further studies with larger sample sizes are needed to support our findings and inform future investigations of new treatment and diagnostic options for a more personalized approach for patients with differentiated thyroid cancer.
Collapse
Affiliation(s)
- Alexander Wilhelm
- Department of Surgery, Clarunis, St. Clara Hospital and University Hospital Basel, University of Basel, Basel, Postfach, 4002, Switzerland.
- Department of Surgery, University of California, San Francisco, CA, USA.
| | - Isabelle Lemmenmeier
- Department of Surgery, Clarunis, St. Clara Hospital and University Hospital Basel, University of Basel, Basel, Postfach, 4002, Switzerland
| | - Alexandros Lalos
- Department of Surgery, Clarunis, St. Clara Hospital and University Hospital Basel, University of Basel, Basel, Postfach, 4002, Switzerland
| | - Alberto Posabella
- Department of Surgery, Clarunis, St. Clara Hospital and University Hospital Basel, University of Basel, Basel, Postfach, 4002, Switzerland
| | - Venkatesh Kancherla
- Institute of Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Salvatore Piscuoglio
- Institute of Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
- Visceral Surgery Research Laboratory, Clarunis, Department of Biomedicine, Basel, Switzerland
| | - Tarik Delko
- Department of Surgery, Clarunis, St. Clara Hospital and University Hospital Basel, University of Basel, Basel, Postfach, 4002, Switzerland
- Department of Surgery, Hirslanden Hospital St. Anna, Lucerne, Switzerland
| | - Markus von Flüe
- Department of Surgery, Clarunis, St. Clara Hospital and University Hospital Basel, University of Basel, Basel, Postfach, 4002, Switzerland
- Visceral Surgery Research Laboratory, Clarunis, Department of Biomedicine, Basel, Switzerland
| | - Kathrin Glatz
- Institute of Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Raoul André Droeser
- Department of Surgery, Clarunis, St. Clara Hospital and University Hospital Basel, University of Basel, Basel, Postfach, 4002, Switzerland
| |
Collapse
|
4
|
Cao X, He Q. Ursolic acid inhibits proliferation, migration and invasion of human papillary thyroid carcinoma cells via CXCL12/CXCR4/CXCR7 axis through cancer-associated fibroblasts. Hum Exp Toxicol 2022; 41:9603271221111333. [PMID: 35786050 DOI: 10.1177/09603271221111333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
As a pentacyclic triterpenoid compound, Ursolic acid (UA) broads range of biological effects. CXCL12 is a ligand for CXCR4 and CXCR7 proteins on thyroid cancer cells. Here we examined the effects of UA on the proliferation, migration and invasion of papillary thyroid carcinoma (PTCs) in a dose-manner. In addition, UA can reduce the expression levels of CXCR4 and CXCR7 in PTCs. In addition to this direct anticancer pathway, studies have shown that UA can play an anticancer role by affecting the secretion of CXCL12 in cancer-associated fibroblasts (CAFs). After treated with UA, normal fibroblasts and CAFs culture medium (CM) showed differential CXCL12 expression levels. We prepared fibroblast conditioned medium according to the intervention of UA, then cultured TPC-1 and B-CPAP cells with differential CM, and detected significant differences in the proliferation, migration and invasion of cancer cells. Our findings uncovered an indirect anticancer mechanism of UA. This cancer chemopreventive properties is expected to make UA a clinically useful chemopreventive agent.
Collapse
Affiliation(s)
- Xianjiao Cao
- Department of Thyroid and Breast Surgery, The 960th Hospital of the PLA Joint Logistics Support Force, Jinan, China
| | - Qingqing He
- Department of Thyroid and Breast Surgery, The 960th Hospital of the PLA Joint Logistics Support Force, Jinan, China
| |
Collapse
|