Anti-CCR5 Monoclonal antibody, clone IN-DDS6 [PE]

The long noncoding RNA (lncRNA), which could bind to target DNA, RNA, or protein, plays a vital role in the pathogenesis of viral replication and disease progression. Exploring how lncRNA regulates HIV infection is crucial for studying the pathogenesis, disease progression, and effective treatment of AIDS. Recently, Kulkarniet al.convincingly provided a molecular basis for association between CCR5AS lncRNA and outcome of HIV infection. Such results open a new avenue for the treatment and prevention of viral infections. In this study, we retell this story for a broad audience about how a new lncRNA enhances HIV-1 infection in easy-to-understand and jargon-free language.

Colon cancer (CC) is one of the leading causes of cancer related mortality. Research over past decades have profoundly enhanced our understanding of immunotherapy, a major clinical accomplishment, and its potential role toward treating CC. However, studies investigating the expression of these immune checkpoints, such as epithelial cell adhesion molecule (EpCAM), programmed death-1 (PD-1), and programmed death-ligand 1 (PD-L1), by peripheral blood mononuclear cells (PBMCs) is lacking. Here, high-dimensional mass cytometry (CyTOF) is used to investigate immune alterations and promising immunotherapeutic targets expression by PBMCs of CC patients. Results reveal that expression of EpCAM and PD-L1 on CD4(+) T cells significantly increased in patients with CC, compared with age- and sex- matching healthy controls and patients with colonic polyps. These differences are also validated in an independent patient cohort using flow cytometry. Further analysis revealed that EpCAM+ CD4(+) T cells are PD-L1(+) CCR5(+) CCR6(+). Immunofluorescence staining results demonstrate that the increase of EpCAM(+) CD4(+) T cells is also observed in tumor tissues, rather than para-cancerous tissues. To ascertain the functional disorders of the identified cell subset, phosphorylated signaling protein levels are assessed using imaging mass cytometry. Increases in pp38 MAPK and pMAPKAPK2 are observable, indicating abnormal activation of pp38 MAPK-pMAPKAPK2 signaling pathway. Results in this study indicate that EpCAM(+) CD4(+) T cells may play a role in CC development. Detailed knowledge on the functionality of EpCAM(+) CD4(+) T cells is of high translational relevance.