Molecular biology of human T cell leukemia virus
SEMINARS IN DIAGNOSTIC PATHOLOGY
Authors: Ratner, Lee
Abstract
Human T cell leukemia virus type 1 (HTLV-1) is a horizontally transmitted virus infection of CD4+ lymphocytes which causes adult T cell leukemia-lymphoma (ATLL) and HTLV-associated myelopathy (HAM). The viral genome encodes two oncoproteins, transactivator protein (Tax) and helix basic zipper protein (HBZ), which are considered tumor initiator and maintenance factors, respectively. Tax is the primary inducer of clonal infected T cell expansion, and genetic instability. The immune response to Tax results in the selection of cells with little or no Tax expression, which have undergone genetic and epigenetic alterations that promote T cell activation, proliferation, and resistance to apoptosis. This selection of malignant cells occurs over several decades in 5% of infected individuals. Novel insights into the molecular details of each of these events has led to targeted therapies for ATLL.
Identification of Potential Gene Signatures Related to Sleep Deprivation
JOURNAL OF COMPUTATIONAL BIOLOGY
Authors: Ruan, Sha-Sha; Xiao, Yi-Chen; He, Pei-Cheng; Wang, Yi; Ma, Tao
Abstract
This study aimed to identify possible therapeutic targets involved in sleep deprivation (SD) risks. GSE77393 data set was acquired from Gene Expression Omnibus database. Functional analysis and protein-protein interaction (PPI) analysis were used to extract the differentially expressed genes (DEGs) between two SD samples and control samples. Moreover, submodule network with the same function was further extracted and the functional enrichment analysis of corresponding genes was carried out. Afterward, the transcriptional regulation analysis and drug-gene interaction were also carried out to identify the essential genes associated with SD susceptibility. Totally, 121 DEGs, including 90 consistently upregulated DEGs and 31 downregulated DEGs, were screened and the results of functional analysis indicated that upregulated genes were related to learning or memory and response to drug, whereas downregulated DEGs were mainly responsible for response to UV and cell differentiation. Moreover, PPI network and submodule analysis revealed that many key genes (FOSandBDNF) were hub genes and the KEGG enrichment analysis found that these genes such asFOSandBDNFwere considerably enriched in pathways such as MAPK signaling pathway, HTLV-I infection, and Hepatitis B. In addition, two genes (FOSandBDNF) with a higher degree were found to be key regulators and play important roles in the transcriptional regulator network and drug-gene interactions, suggesting that these two genes were associated with SD development.FOSandBDNFmight be served as the potential targets for SD treatment.