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Computational Analysis of Regulatory Network in Psoriasis by Top-Down Approach: An Initiation towards Identifying a Novel Biomarker to Diagnose and Treat Psoriasis in Future

Medical Reports & Case Studies

ISSN - 2572-5130

Research Article - (2017) Volume 2, Issue 3

Computational Analysis of Regulatory Network in Psoriasis by Top-Down Approach: An Initiation towards Identifying a Novel Biomarker to Diagnose and Treat Psoriasis in Future

Harishchander A*
Department of Bioinformatics, Sathyabama University, Chennai, Tamilnadu, India
*Corresponding Author: Harishchander A, Department of Bioinformatics, Sathyabama University, Chennai, Tamilnadu, India, Tel: +919940066227 Email:

Abstract

In the era of post genomics, computational analysis of gene regulation in Psoriasis by the Top-down approach of computational biology to understand the pathology of disease and identifying a novel biomarker is a challenging task to execute. The challenge was approached on the context of Top-down approach [Annotation of Psoriasis associated genes from PubMed, DisGeNET and OMIM with text mining of regulators (microRNAs and Transcription Factors)] to construct and analyze the network by the approach of systems biology for understanding the disease pathology and predicting a novel and potential regulators to enhance the discovery of identifying a novel biomarker for Psoriasis in future.

Keywords: Gene; Biomarker; Psoriasis; Epidermis; Keratinocytes; Antigen; Langerhans cells; Lymph nodes; Cytokines; Tumor necrosis factor; Antigen presenting cells

Introduction

Psoriasis is a disorder mediated by immune system by making certain faulty signals in the human body. It’s still a belief that psoriasis can be developed under the specified condition i.e. “when the immune system signals the body to accelerate the growth of skin cells. Normally, skin cells get matured from the surface of the skin on every 28-30 days. In case of psoriasis, the skin cells mature in 3-6 days. Instead of being in shed, the cells in skin get pile up to cause the visible lesions. It was also found that the genes that cause psoriasis can determine the reaction of a person’s immune system. These genes can either cause psoriasis or other conditions which are immune-mediated like Type-I Diabetes or rheumatoid arthritis.

Pathophysiology of psoriasis involves the understanding of the occurrence of prominent pathologies in the major components of skin i.e. the epidermis and the dermis. There are two well established hypotheses about the process that occurs in the development of the disease. The first hypothesis considers psoriasis as a disorder with excessive growth and reproduction of skin cells. Here, the problem is viewed as a fault of the epidermis and its keratinocytes. In second hypothesis, the disease is viewed as an immune-mediated disorder. Here, the excessive reproduction of skin cells is secondary to the factors produced by the immune system [1,2]. In Current research, the inflammatory mechanisms are immune based and maintained by T cells in dermis. Antigen-presenting cells in skin like Langerhans cells were believed to migrate from skin to the regional lymph nodes to interact with T cells. Presentation of an unidentified antigen to the T cells along with various co-stimulatory signals triggers an immune response to lead to the activation of T-cells and release of cytokines. Co-stimulatory signals were initiated by the interaction of adhesion molecules on the antigen-presenting cells like lymphocyte functionassociated antigen (LFA)-3 and the intercellular adhesion of molecules with their respective receptors (CD2 and LFA-1) on T cells. These T cells are released into the circulation. Reactivation of T cells in dermis and epidermis with local effects of cytokines like tumor necrosis factor (TNF) to lead to the cell mediated immune responses, inflammation and epidermal hyper proliferation in persons with psoriasis. The immune based model of psoriasis was supported on the basis of the observation that the immunosuppressant medications can clear plaques in psoriasis. However, the complete role of the immune system needs refinement in understanding. It was recently reported that an animal model of psoriasis can be triggered in mice without T cells. This concept is a paradox to researchers because the reduction in the count of T-cell causes psoriasis [3] but the count of CD4-T-cell decreases with the progression of HIV in psoriasis. As an additive, HIV is characterized by a strong profile of Th2 cytokine but psoriasis vulgaris is characterized with a strong secretion pattern of Th1. It was also hypothesized that the presence of diminished CD4-T-cell can cause an over-activation in CD8-T-cells to exacerbate the cause of psoriasis in patients with HIV positive [4].

Materials and Methods

PubMed

PubMed is an online search engine with open access facility to refer MEDLINE for identifying references and abstracts on topics in biomedical and life sciences. The United States National Library of Medicine (NLM) at the National Institutes of Health maintains the database as part of the Entrez system to retrieve information. Most of the records in PubMed contain links to the complete article, in PubMed Central (Roberts 2001). Information regarding the indexed journals in MEDLINE can be found in the Catalog of NLM.

DisGeNET

DisGeNET is a platform of pattern discovery, designed for addressing the queries regarding the genetic imprint of human diseases. DisGeNET is one of the largest repositories of gene-disease associations (GDAs) in humans (Piñero et al. 2015). It offers a set of tools in bioinformatics to facilitate the data analysis by different users. It is maintained by the Integrative Biomedical Informatics (IBI) Group of the (GRIB)-IMIM/UPF at the Barcelona Biomedical Research Park (PRBB), Barcelona in Catalonia.

OMIM

Online Mendelian Inheritance in Man (OMIM) is a comprehensive compendium of human genes and phenotypes that are available freely and updated daily. The complete text, referenced in the overviews of OMIM contains information on all known mendelian disorders for 15,000 genes. OMIM focuses on the relationship between genotype and phenotype. This database was initiated in 1960s by Dr. Victor A McKusick as a catalog of mendelian traits and disorders and it was entitled Mendelian Inheritance in Man (MIM). Then, twelve book editions of MIM were published between 1966 and 1998. The online version, OMIM, was created in 1985. It was made available on the internet in 1987. In 1995, OMIM was developed for the World Wide Web by NCBI, the National Center for Biotechnology Information.

TargetScan

TargetScan [5] is a web server to predict the biological targets of miRNAs by searching for the presence of target sites that matches with the seed region of each miRNA. The target predictions of each miRNA are updated regularly.

miRTarBase

miRTarBase [6] is a curated database of miRNA based target interactions. At present, miRTarBase has accumulated more than fifty thousand interactions of miRNA with target (MTIs); the interactions were manually collected by surveying the literature after the processing of data mining of the text to filter research articles to functional studies of miRNAs in a systematic method. In general, the MTIs were also experimentally validated by a reporter assay, western blot, microarray and experiments on next-generation sequencing. The miRTarBase provides the most updated collection by comparing with the previously developed databases.

RegNetworks

RegNetwork [7] is a data base that contains five types (Transcription Factor-Transcription factor, Transcription Factor-Gene, Transcription Factor-microRNA, microRNA-Transcription Factor) of transcriptional and post-transcriptional regulatory relationships for human and mouse. RegNetwork integrates the curated regulations from various databases and the potential regulations were inferred on the basis of transcription factor binding sites (TFBSs). Transcription factor (TF) and microRNA (miRNA) in gene regulations. Recently, more regulatory relationships in databases and literatures are available and it’s valuable for studying the system of gene regulation by integrating the prior knowledge of the transcriptional regulations between TF and target genes along with the post-transcriptional regulations between miRNA and targets. The conservation of knowledge about the binding site of transcription factor (TFBS) can also be implemented to couple the potential regulation between regulators and their targets.

Cytoscape

Cytoscape software (Shannon et al. 2003) is used for network construction, visualization and analysis in bioinformatics with an open source platform for visualizing the interactions in molecular networks and integrating them with the profiles of gene expression. Additional features in Cytoscape are available as plugins for network and molecular profiling. Plugins may be developed using the Cytoscape.

PANTHER

PANTHER (Protein Analysis through Evolutionary Relationships) is a classification system to classify proteins (expressed genes) to facilitate analysis in a high-throughput method [8]. In PANTHER, proteins were classified according to their family (evolutionarily related proteins); molecular function (interaction of proteins at a biochemical level); biological process (larger network of proteins that interact to accomplish a process at the level of the cellular level, e.g. mitosis; pathway (explicit specification of the relationships between the interacting molecules).

Method (Top-down approach)

Obtain the list of genes associated with psoriasis from PubMed, DisGeNET and OMIM.

Obtain the list of miRNA associated with psoriasis related genes from miRTarbase and TargetScan.

Obtain the list of transcription factors associated with psoriasis related genes from RegNetworks.

Construct and analyze the network in Cytoscape.

Results and Discussions

In case of gene identification, the genes associated with psoriasis were retrieved from PubMed, DisGeNET and OMIM. Psoriasis associated gene search in PubMed resulted in 660 genes. Similarly, DisGeNET and OMIM resulted in 388 and 261 genes. Data mining was performed in the gene set by removing duplicates and search for genes to have a seed pair for miRNA in miRTarBase (Experimental miRNAs) and Target Scan (Predicted miRNAs). Data mining resulted in 104 unique genes from the 3 sets of data of which only 58 genes contain a seed pairing site for miRNA. In case of miRNA search for associated genes, it was observed that there is a similarity between the miRNAs in Target Scan (Predicted miRNAs) with the miRNAs in miRTarBase (Experimental miRNAs). Since there is a similarity in the miRNA search of associated genes with the predicted and validated miRNAs, genes are paired with miRNAs in a way that geneexperimental miRNA>gene-predicted miRNA. In case of top down approaches in regulatory analysis of genes are associated with psoriasis; the genes are paired with the associated miRNAs and Transcription Factors and the results were given in Table 1.

Genes (PubMed, DisGeNET and OMIM) miRNAs (miRtarbase/Target Scan) Transcription Factor (RegNetworks)
HPSE hsa-miR-1258 ETS1; ETS2; ETV4; MAX; MXI1::CLEC5A; AR; ESR1
HOXA7
CCL20 hsa-miR-21-5p; hsa-miR-144; hsa-miR-145; hsa-miR-21; hsa-miR-330-3p; hsa-miR-338-5p; hsa-miR-361-3p
hsa-miR-380; hsa-miR-496; hsa-miR-518e; hsa-miR-525-5p; hsa-miR-548d-3p; hsa-miR-590-3p; hsa-miR-590-5p
hsa-miR-635; hsa-miR-766; hsa-miR-802; hsa-miR-921
CTCF;MYC; PPARG::RXRA
RELA; SP1
CCL2 hsa-miR-124-3p; hsa-miR-124; hsa-miR-124a; hsa-miR-141; hsa-miR-142-5p; hsa-miR-323-3p; hsa-miR-374a; hsa-miR-374b; hsa-miR-421; hsa-miR-495; hsa-miR-545; hsa-miR-577; hsa-miR-633 JUN; NFIC; NFKB1; NFKB2; NR2F2; REL; RELA; SMAD3
SMAD4; SP1; SRF; STAT1; STAT2; STAT3; STAT4; STAT6
EIF4E hsa-miR-1; hsa-miR-122; hsa-miR-141; hsa-miR-145-3p; hsa-miR-146b-5p; hsa-miR-150; hsa-miR-16; hsa-miR-186; hsa-miR-195; hsa-miR-203; hsa-miR-206; hsa-miR-325; hsa-miR-34c-3p; hsa-miR-377; hsa-miR-380; hsa-miR-495; hsa-miR-498; hsa-miR-503; hsa-miR-520d-5p; hsa-miR-524-5p; hsa-miR-545; hsa-miR-582-5p;
hsa-miR-586; hsa-miR-592; hsa-miR-599; hsa-miR-613; hsa-miR-654-5p; hsa-miR-656; has-miR-9; has-miR-141-3p; has-miR-145-5p; has-miR-497-5p; has-miR-768-3p
BACH1; CUX1; EMX2; FOS; FOSB; FOSL1; FOXD1; FOXF2; JUN; JUNB; JUND; MAX; MXI1::CLEC5A; MYC
NFIL3; NFYA; NR3C1; PML
STAT1; STAT2; STAT3; STAT4; STAT6; USF1
PPARD hsa-miR-138-5p; hsa-miR-29b; hsa-miR-29c; hsa-miR-93 ATF1; ATF2; ATF3; ATF4; ATF5; ATF6; ATF7; BCL6; CREB1; CTCF; EGR1; EP300; GABPA; HDAC1; HDAC2; HDAC3; HDAC7; JUP; LEF1; NCOR1; NCOR2; NR0B2; NRIP1; PROX1; RELA; RXRA; RXRB; RXRG; SMAD9; SPEN
TCF7; TCF7L1; TCF7L2
TAP2 hsa-miR-330-3p; hsa-miR-370-3p; hsa-miR-384; hsa-miR-670-3p; hsa-miR-6893-3p; hsa-miR-185; hsa-miR-219-2-3p; hsa-miR-330-3p; hsa-miR-370; hsa-miR-371-5p; hsa-miR-384;
hsa-miR-409-3p; hsa-miR-433; hsa-miR-522; hsa-miR-582-5p; hsa-miR-645; hsa-miR-655; hsa-miR-875-3p; hsa-miR-885-5p; hsa-miR-921
CREB1; CUX1; ESR1; MAX; MYC; NFE2L1; STAT5A
CYLD hsa-miR-181b-5p; hsa-miR-182-5p; hsa-miR-362-5p; hsa-miR-500a-5p
hsa-miR-130a; hsa-miR-130b; hsa-miR-15a; hsa-miR-15b; hsa-miR-16
hsa-miR-181b; hsa-miR-181d; hsa-miR-182; hsa-miR-186; hsa-miR-195
hsa-miR-197; hsa-miR-19a; hsa-miR-19b; hsa-miR-301; hsa-miR-301a; hsa-miR-301b; hsa-miR-340; hsa-miR-362-5p; hsa-miR-424; hsa-miR-454
hsa-miR-497; hsa-miR-508-3p; hsa-miR-543; hsa-miR-544; hsa-miR-548a-5p; hsa-miR-548b-5p; hsa-miR-548c-5p; hsa-miR-548d-5p; hsa-miR-579; hsa-miR-590-3p; hsa-miR-656;
hsa-miR-944
ATF2; EGR1; IKBKG; JUN; LHX3; NFKB1; NFYA; POU2F1; SP1; TCF3
IGF1 hsa-miR-27a-3p; hsa-miR-29a-3p; hsa-miR-190a-5p; hsa-miR-199a-3p; hsa-let-7i-5p; hsa-miR-299-3p; hsa-miR-190b; hsa-let-7e-5p; hsa-miR-483-3p; hsa-let-7a; hsa-let-7b; hsa-let-7c; hsa-let-7e; hsa-let-7f; hsa-let-7g; hsa-let-7i; hsa-miR-1; hsa-miR-105; hsa-miR-128; hsa-miR-129-5p; hsa-miR-1297; hsa-miR-130a; hsa-miR-130b; hsa-miR-149; hsa-miR-152; hsa-miR-154; hsa-miR-186; hsa-miR-18a; hsa-miR-18b; hsa-miR-190; hsa-miR-192; hsa-miR-19a; hsa-miR-19b; hsa-miR-206; hsa-miR-215; hsa-miR-221; hsa-miR-222; hsa-miR-23a; hsa-miR-23b; hsa-miR-29a; hsa-miR-29b; hsa-miR-29c; hsa-miR-301a; hsa-miR-301b; hsa-miR-340; hsa-miR-361-5p; hsa-miR-362-5p; hsa-miR-377; hsa-miR-410; hsa-miR-425; hsa-miR-450b-5p; hsa-miR-454; hsa-miR-486-5p; hsa-miR-488; hsa-miR-489; hsa-miR-495; hsa-miR-502-5p; hsa-miR-503; hsa-miR-519a; hsa-miR-519b-3p; hsa-miR-519c-3p; hsa-miR-556-3p; hsa-miR-561; hsa-miR-576-5p; hsa-miR-590-3p; hsa-miR-592; hsa-miR-599; hsa-miR-607; hsa-miR-613; hsa-miR-626; hsa-miR-632; hsa-miR-634; hsa-miR-656; hsa-miR-758; hsa-miR-942; hsa-miR-98 CEBPA; CTCF; ESR1; FOXD1;
FOXF2; JUN; MYB; POU3F2;
RFX1; STAT1; STAT2; STAT3;
STAT5A; STAT5B; TGIF1
BCL2 hsa-miR-34b-5p; hsa-miR-21-5p; hsa-miR-153-3p; hsa-miR-204-5p; hsa-let-7a-5p; hsa-miR-15a-5p; hsa-miR-15b-5p; hsa-miR-16-5p; hsa-miR-34a-5p; hsa-miR-20a-5p; hsa-miR-17-5p; hsa-miR-29a-3p; hsa-miR-29b-3p; hsa-miR-29c-3p; hsa-miR-34b-3p; hsa-miR-181a-5p; hsa-miR-181b-5p; hsa-miR-181c-5p; hsa-miR-181d-5p; hsa-miR-33b-5p; hsa-miR-34c-5p; hsa-miR-192-5p; hsa-miR-195-5p; hsa-miR-630; hsa-miR-451a; hsa-miR-125b-5p; hsa-miR-365a-3p; hsa-miR-449a; hsa-miR-200b-3p; hsa-miR-200c-3p; hsa-miR-429; hsa-miR-7-5p; hsa-miR-136-5p; hsa-miR-24-2-5p; hsa-miR-148a-3p; hsa-miR-24-2-5p; hsa-miR-182-5p; hsa-miR-143-3p; hsa-miR-205-5p; hsa-miR-126-3p; hsa-miR-18a-5p; hsa-miR-497-5p; hsa-miR-1915-3p; hsa-miR-206; hsa-miR-448; hsa-miR-708-5p; hsa-miR-184; hsa-miR-30b-5p; hsa-miR-135a-5p; hsa-miR-224-5p; hsa-miR-503-5p; hsa-miR-494-3p; hsa-miR-211-5p  
AREG hsa-miR-34a-5p; hsa-miR-200a-3p; hsa-miR-129-5p; hsa-miR-135a; hsa-miR-135b; hsa-miR-345; hsa-miR-34a; hsa-miR-34c-5p; hsa-miR-449a; hsa-miR-449b; hsa-miR-499-5p; hsa-miR-517a; hsa-miR-517c; hsa-miR-548a-5p; hsa-miR-548c-5p; hsa-miR-556-5p; hsa-miR-559; hsa-miR-561; hsa-miR-577; hsa-miR-583; hsa-miR-584; hsa-miR-590-3p; hsa-miR-640
hsa-miR-944
AR; BRCA1; CREB1; E2F1; EGR1; HOXB13; IRF1; NFKB1
PAX2; RARA; RELA; SMAD3
SMAD4; SP1; STAT5A; WT1
VNN3 hsa-miR-138-5p; hsa-miR-455-5p; hsa-miR-135a; hsa-miR-135b; hsa-miR-199a-3p; hsa-miR-345; hsa-miR-371-5p; hsa-miR-421; hsa-miR-455-3p; hsa-miR-455-5p; hsa-miR-505
hsa-miR-514; hsa-miR-744
CTCF; FOXA2; NFKB1;NFKB2
REL; RELA; STAT5B
MMP9 hsa-miR-451a; hsa-miR-491-5p; hsa-miR-338-3p; hsa-miR-9-5p; hsa-miR-211-5p; hsa-let-7e-5p; hsa-miR-133b; hsa-miR-29b-3p; hsa-miR-191; hsa-miR-204; hsa-miR-339-5p; hsa-miR-451; hsa-miR-483-3p; hsa-miR-494
hsa-miR-515-5p; hsa-miR-520a-5p; hsa-miR-525-5p
AR; BACH1; BACH2; ERG; ETS1; ETS2; ETV4; FLI1; FOS;
FOSB; FOSL1; JUN; JUNB; JUND; MYC; NFE2; NFE2L1; NFKB1; NFKB2; PPARA; PPARG; RELA; RELB; SMAD3; SP1; SPI1
HBEGF hsa-miR-194-5p; hsa-miR-132-3p; hsa-let-7d; hsa-let-7g; hsa-let-7i; hsa-miR-132; hsa-miR-135a; hsa-miR-135b; hsa-miR-182; hsa-miR-183; hsa-miR-194; hsa-miR-212; hsa-miR-27a; hsa-miR-27b; hsa-miR-29a; hsa-miR-29b; hsa-miR-29c; hsa-miR-31; hsa-miR-376c; hsa-miR-379; hsa-miR-623; hsa-miR-662; hsa-miR-96 CTCF; ETS2; MAX; TBP; ZBTB16
TGFA hsa-miR-152-3p; hsa-miR-376c-3p; hsa-miR-101; hsa-miR-130a; hsa-miR-130b; hsa-miR-137; hsa-miR-148a; hsa-miR-148b; hsa-miR-152; hsa-miR-205; hsa-miR-23a; hsa-miR-23b; hsa-miR-301 CTCF; EPAS1; ESR1; FOXA1; FOXA2; HIF1A; NFKB1; NFKB2; NKD2; PGR; TFAP2A;
TP53
LHFP hsa-miR-133a-3p.2; hsa-miR-133b; hsa-miR-101; hsa-miR-133a; hsa-miR-133b; hsa-miR-141; hsa-miR-147; hsa-miR-153; hsa-miR-200a; hsa-miR-200b; hsa-miR-200c; hsa-miR-218; hsa-miR-26a; hsa-miR-297; hsa-miR-300; hsa-miR-337-3p; hsa-miR-340; hsa-miR-381; hsa-miR-429; hsa-miR-448; hsa-miR-491-3p; hsa-miR-500; hsa-miR-501-5p; hsa-miR-607; hsa-miR-618; hsa-miR-632; hsa-miR-9 AHR; ARNT; CTCF; PATZ1
EGFR hsa-miR-7-5p; hsa-miR-145-5p; hsa-miR-128-3p; hsa-miR-146a-5p; hsa-miR-21-5p; hsa-miR-128b; hsa-miR-133a-3p; hsa-miR-133b; hsa-miR-27a-3p; hsa-let-7a-5p; hsa-miR-574-3p; hsa-miR-219a-5p; hsa-miR-302b-3p; hsa-miR-125a-5p; hsa-miR-218-5p; hsa-miR-21; hsa-miR-1; hsa-miR-128; hsa-miR-141; hsa-miR-146a; hsa-miR-16; hsa-miR-21; hsa-miR-27a; hsa-miR-27b; hsa-miR-548c-3p; hsa-miR-7 AR; CEBPB; CTNNB1; E2F1; EGR1; ELF3; ESR1; ESR1; ESR2; HOXC10; HTT; MEF2A;
MYB; NFKB2; PPARG; REL; RELA; SMURF2; SP1; STAT1; STAT3; STAT5A; STAT5B; TFAP2A; TP53; WT1; WWP1; XRCC6
SGCG hsa-miR-137 Nil
SDC4 hsa-miR-18a-5p; hsa-miR-1; hsa-miR-124; hsa-miR-194; hsa-miR-224; hsa-miR-506; hsa-miR-548d-3p; hsa-miR-637; hsa-miR-941 EBF1; MAX; NFKB1; REL; RELA; SP1; STAT5A; STAT5B; mTFAP2A; TFAP2C; TGFB1I1
IGF1R hsa-miR-122-5p; hsa-miR-133b; hsa-miR-145-5p; hsa-miR-7-5p; hsa-miR-138-5p; hsa-miR-194-5p; hsa-miR-99a-5p; hsa-miR-223-3p; hsa-miR-100-5p; hsa-miR-497-5p; hsa-miR-152-3p; hsa-miR-139-5p; hsa-miR-376a-3p; hsa-miR-376c-3p; hsa-miR-383-5p; hsa-miR-181b-5p; hsa-miR-335-5p; hsa-miR-320a; hsa-let-7e-5p; hsa-miR-125b-2-3p; hsa-let-7c-5p; hsa-miR-16-5p; hsa-miR-630; hsa-let-7b-5p; hsa-miR-143-3p; hsa-miR-133a-3p; hsa-miR-140-5p; hsa-miR-150-3p; hsa-miR-375; hsa-miR-503-5p; hsa-miR-378a-3p; hsa-miR-185-5p; hsa-miR-206; hsa-miR-21-5p; hsa-miR-26b-5p; hsa-miR-486-5p; hsa-let-7a; hsa-let-7b; hsa-let-7c; hsa-let-7d; hsa-let-7e; hsa-let-7f; hsa-let-7g; hsa-let-7i; hsa-miR-100; hsa-miR-106a; hsa-miR-122; hsa-miR-133b; hsa-miR-138; hsa-miR-139-5p; hsa-miR-140-5p; hsa-miR-141; hsa-miR-143; hsa-miR-145; hsa-miR-153; hsa-miR-15a; hsa-miR-15b; hsa-miR-16; hsa-miR-182; hsa-miR-186; hsa-miR-194; hsa-miR-195; hsa-miR-200a; hsa-miR-202; hsa-miR-203; hsa-miR-214; hsa-miR-22; hsa-miR-223; hsa-miR-300; hsa-miR-302b; hsa-miR-302c; hsa-miR-302d; hsa-miR-30a; hsa-miR-30b; hsa-miR-30c; hsa-miR-30d; hsa-miR-30e; hsa-miR-320; hsa-miR-328; hsa-miR-329; hsa-miR-330-3p; hsa-miR-340; hsa-miR-361-3p; hsa-miR-362-3p; hsa-miR-372; hsa-miR-373; hsa-miR-376c; hsa-miR-377; hsa-miR-378; hsa-miR-379; hsa-miR-381; hsa-miR-409-5p; hsa-miR-422a; hsa-miR-424; hsa-miR-448; hsa-miR-455-5p; hsa-miR-489; hsa-miR-493; hsa-miR-494; hsa-miR-495; hsa-miR-497; hsa-miR-503; hsa-miR-505; hsa-miR-507; hsa-miR-509-3-5p; hsa-miR-509-5p; hsa-miR-520a-3p; hsa-miR-520b; hsa-miR-520c-3p; hsa-miR-520d-3p; hsa-miR-520d-5p; hsa-miR-520e; hsa-miR-524-5p; hsa-miR-539; hsa-miR-548c-3p; hsa-miR-548d-3p; hsa-miR-557; hsa-miR-570; hsa-miR-577; hsa-miR-583; hsa-miR-625; hsa-miR-626; hsa-miR-646; hsa-miR-650; hsa-miR-653; hsa-miR-671-3p; hsa-miR-7; hsa-miR-769-5p; hsa-miR-892b; hsa-miR-944; hsa-miR-96; hsa-miR-98; hsa-miR-99a BACH1; BACH2; BRCA1; CTNNB1; E2F1; E2F2; E2F3; E2F4; E2F5; E2F6; E2F7; EGR1; ESR1; FOXO1; FOXO3; FOXO3B; FOXO4; MAX;
MXI1::CLEC5A; MYB; MYC; MZF1; PAX5; REL
RELA; SMURF2; SP1; SREBF1; SREBF2; STAT3; TFAP2A; TP53
USF1; WT1; WWP1
LEP hsa-miR-9-5p; hsa-miR-29a; hsa-miR-29b; hsa-miR-29c; hsa-miR-331-3p
hsa-miR-369-5p; hsa-miR-520g
hsa-miR-520h; hsa-miR-575; hsa-miR-875-5p; hsa-miR-9
ARNT; CEBPA; CEBPB
CEBPD; FOXC1; HIF1A
HLF;MIF;TBP
KLK13 hsa-miR-330-3p; hsa-miR-455-5p; hsa-miR-542-3p; hsa-miR-591; hsa-miR-620; hsa-miR-654-5p CREB1; EGR1; KLF12; MZF1; PPARG
HMOX1 hsa-miR-196a-5p; hsa-miR-122-5p; hsa-miR-24-3p; hsa-miR-16; hsa-miR-196a-3p; hsa-miR-873 BACH2; CREB1; ERG; ETS1; FLI1; HIF1A; HNF4A; MAX; MXI1::CLEC5A; MYC; NFE2; NFIC; NFKB1; PPARG::RXRA; RXRA; SMAD7; SP1; SPI1; STAT3; TFAP2A; USF1; USF2
IFI6 hsa-miR-1225-3p; hsa-miR-558; hsa-miR-624; hsa-miR-920 TFAP2C; USF1
SFXN1 hsa-miR-30a-5p; hsa-miR-30b-5p; hsa-miR-30c-5p; hsa-miR-30d-5p; hsa-miR-30e-5p; hsa-miR-1; hsa-miR-128a
hsa-miR-134; hsa-miR-30a; hsa-miR-30b; hsa-miR-30c; hsa-miR-30d; hsa-miR-30e
HNF4A; MAX; MYC
IL23R hsa-miR-383-5p.2; hsa-miR-216a; hsa-miR-297; hsa-miR-331-5p; hsa-miR-454; hsa-miR-509-3p; hsa-miR-583; hsa-miR-875-3p; hsa-miR-876-3p; hsa-miR-936 FOS; JUN; RORA; STAT3
PTPN22 hsa-miR-181a-5p; hsa-miR-133a; hsa-miR-133b; hsa-miR-325; hsa-miR-630 CDC5L; IRF1; MEF2A
TP53
LOR hsa-miR-196a-5p; hsa-miR-196b-5p;
hsa-let-7a; hsa-let-7b; hsa-let-7c; hsa-let-7d; hsa-let-7e; hsa-let-7f; hsa-let-7g
hsa-let-7i; hsa-miR-135a; hsa-miR-135b; hsa-miR-196a; hsa-miR-196b; hsa-miR-28-3p; hsa-miR-296-3p; hsa-miR-331-3p; hsa-miR-450b-5p; hsa-miR-490-5p; hsa-miR-570; hsa-miR-583; hsa-miR-641; hsa-miR-766; hsa-miR-873; hsa-miR-875-3p; hsa-miR-922; hsa-miR-98
ATF1; CREB1; FOS; FOSB; JUN; JUNB; JUND; SP3
S100A9 hsa-miR-196a-5p AR; CTCF; MYB; RARA
RARB; RARG; SPI1; TBP
TFAP2A; TP53
S100A8 hsa-miR-24-3p; hsa-miR-135a; hsa-miR-135b; hsa-miR-202; hsa-miR-326
hsa-miR-330-5p; hsa-miR-544
AR; FOS; FOSB; JUN; JUNB; JUND; PDCD11; RARA; RARB; RARG
TBP; TP53
IL10 hsa-miR-106a-5p; hsa-let-7c-5p; hsa-let-7a; hsa-let-7b; hsa-let-7c; hsa-let-7d
hsa-let-7e; hsa-let-7f; hsa-let-7g; hsa-let-7i; hsa-miR-106a; hsa-miR-10b; hsa-miR-142-3p; hsa-miR-186; hsa-miR-198; hsa-miR-202; hsa-miR-337-5p; hsa-miR-543; hsa-miR-588; hsa-miR-597; hsa-miR-630; hsa-miR-671-5p; hsa-miR-769-5p; hsa-miR-888; hsa-miR-98
ATF1; CEBPA; CEBPB; CREB1; E2F1; ESR1; ETS1; MEF2A; NFKB1 POU3F2; PPARG; SP1; STAT3; TBP
IL24 hsa-miR-203a-3p; hsa-miR-205-5p; hsa-miR-132; hsa-miR-140-3p; hsa-miR-141; hsa-miR-183; hsa-miR-186; hsa-miR-200a; hsa-miR-200b; hsa-miR-200c; hsa-miR-203; hsa-miR-205
hsa-miR-27a; hsa-miR-27b; hsa-miR-29a; hsa-miR-29b; hsa-miR-29c; hsa-miR-300; hsa-miR-324-3p; hsa-miR-338-5p; hsa-miR-380; hsa-miR-381; hsa-miR-425; hsa-miR-429; hsa-miR-452; hsa-miR-495; hsa-miR-506; hsa-miR-518a-3p; hsa-miR-518b; hsa-miR-518c; hsa-miR-518f; hsa-miR-520a-5p; hsa-miR-525-5p; hsa-miR-573; hsa-miR-582-5p; hsa-miR-600; hsa-miR-601; hsa-miR-602; hsa-miR-616; hsa-miR-628-5p; hsa-miR-767-5p
hsa-miR-891b; hsa-miR-943
CEBPB; JUN; TFAP2A
TFAP2C
ADAM17 hsa-miR-26a-5p; hsa-miR-122-5p; hsa-miR-145-5p; hsa-miR-152-3p CTCF; EGR1; FHL2; GABPA; HNF4A; NOTCH2; NOTCH3; NOTCH4;PPARG::RXRA;
SP1; TFAP2A; TFAP2C; YY1
IL36RN hsa-miR-216a-5p; hsa-miR-122; hsa-miR-338; hsa-miR-338-3p; hsa-miR-507; hsa-miR-197; hsa-miR-338-3p MCM6; SKIL; SSBP2
SSBP4
IL1RN hsa-miR-125a-5p; hsa-miR-125b-3p; hsa-miR-371-3p; hsa-miR-515-5p BACH1; BACH2; EBF1; FOXA2; HNF4A; NFKB1;
NR3C1; PAX5; RXRA; RXRB::RARB; SPI1; STAT5A
CTLA4 hsa-miR-155-5p; hsa-miR-101; hsa-miR-105; hsa-miR-155; hsa-miR-205
hsa-miR-380; hsa-miR-384; hsa-miR-429; hsa-miR-432; hsa-miR-449b; hsa-miR-451; hsa-miR-496; hsa-miR-516a-3p; hsa-miR-517a; hsa-miR-651
hsa-miR-656
BPTF; STAT5A; STAT5B
SGPP2 hsa-miR-101-3p.1; has-miR-24 EBF1; NFKB1; NFKB2; RELA; RELB; TCF3; ZEB1
IRF2 hsa-miR-20a-5p; hsa-miR-153; hsa-miR-18a; hsa-miR-18b; hsa-miR-214
hsa-miR-220c; hsa-miR-221; hsa-miR-222; hsa-miR-23a; hsa-miR-23b; hsa-miR-26a; hsa-miR-26b; hsa-miR-302a
hsa-miR-302b; hsa-miR-302c; hsa-miR-302d; hsa-miR-340; hsa-miR-342-5p; hsa-miR-372; hsa-miR-373; hsa-miR-455-5p; hsa-miR-495; hsa-miR-512-3p; hsa-miR-520a-3p; hsa-miR-520b; hsa-miR-520c-3p; hsa-miR-520d-3p; hsa-miR-520e; hsa-miR-520f; hsa-miR-549; hsa-miR-553
hsa-miR-556-5p; hsa-miR-568; hsa-miR-571; hsa-miR-574-5p; hsa-miR-648; hsa-miR-934
EP300; HMGN1; IRF2BP1; IRF7; IRF8; KAT2B; MAX; MXI1::CLEC5A; MYC; NFKB1; NFKB2; RELA; RELB; STAT1
IL4 hsa-miR-340-5p; hsa-miR-410-3p;
hsa-miR-29a
CEBPA; CEBPB; CEBPG; ETV4; GATA1; NFKB1; POU2F1; POU2F2; RELA;
STAT1; STAT2; TFAP2A
TP53
IL12B hsa-miR-23a-3p; hsa-miR-23b-3p; hsa-miR-23c; hsa-miR-130a-5p; hsa-miR-183; hsa-miR-219-5p; hsa-miR-220c
hsa-miR-494; hsa-miR-545; hsa-miR-632; hsa-miR-95
CEBPA; CEBPB; ETS1; ETS2; FOS; IRF5; JUN; NFKB1; REL; RELA; SP1
SP3; SPI1
CDKAL1 hsa-miR-370-5p; hsa-miR-873-5p.1; hsa-let-7b; hsa-let-7c; hsa-let-7d; hsa-let-7e; hsa-miR-145; hsa-miR-25; hsa-miR-301a; hsa-miR-301b; hsa-miR-451; hsa-miR-454; hsa-miR-495; hsa-miR-517b; hsa-miR-519a; hsa-miR-576-3p; hsa-miR-613; hsa-miR-616; hsa-miR-620; hsa-miR-650; hsa-miR-665; hsa-miR-766; hsa-miR-767-5p; hsa-miR-770-5p; hsa-miR-92a; hsa-miR-92b; hsa-miR-944 CUX1; POU3F2
TNF hsa-miR-19a-3p; hsa-miR-203a-3p; hsa-miR-187-3p; hsa-miR-130a-3p; hsa-miR-143-3p; hsa-miR-130a; hsa-miR-130b; hsa-miR-149; hsa-miR-187
hsa-miR-19a; hsa-miR-296-3p; hsa-miR-409-5p; hsa-miR-454; hsa-miR-516a-5p; hsa-miR-516b; hsa-miR-519b-3p; hsa-miR-542-3p; hsa-miR-581; hsa-miR-592; hsa-miR-599; hsa-miR-654-3p; hsa-miR-770-5p; hsa-miR-875-3p; hsa-miR-875-5p; hsa-miR-939; hsa-miR-17; hsa-miR-9; hsa-miR-31
AHR; ARNT; ATF1; ATF2; CEBPB; CEBPD; CREB1; EBF1; EGR1; EGR4; ELK1; ETS1; ETV4; FOS; IKBKB; IRF5
JUN; NFAT5; NFATC1; NFATC2; NFATC3; NFATC4; NFE2L1; NFKB1; NFKB2; POU2F1; RELA; SMAD6; SMAD7; SP1; SP3; SPI1; STAT1; STAT2; STAT3; STAT4; STAT5A; STAT5B; STAT6; TBP; TFAP2A; TP53
TNXB hsa-miR-30a-5p; hsa-miR-30b-5p; hsa-miR-30c-5p; hsa-miR-30d-5p; hsa-miR-30e-5p; hsa-miR-137; hsa-miR-146b-3p; hsa-miR-149; hsa-miR-152; hsa-miR-30a; hsa-miR-30a-5p; hsa-miR-30b; hsa-miR-30c; hsa-miR-30d; hsa-miR-30e; hsa-miR-372; hsa-miR-483-3p; hsa-miR-486-5p; hsa-miR-504; hsa-miR-512-3p; hsa-miR-638; hsa-miR-875-5p; hsa-miR-892b; hsa-miR-942 ARNT; CTCF; E2F1; E2F2; E2F3; E2F4; E2F5; E2F6; E2F7; FOS; FOSB; FOSL1; HNF4A; JUN; JUNB; JUND; MAX; MEIS1; MYC; NFKB1; NR2F1; NR3C1; PAX2; PAX5; PPARG; RFX1; SREBF1; SREBF2; TFAP2A; TFAP2C; TGIF1; USF1; XBP1; YY1
TRAF3IP2 hsa-miR-3064-5p; hsa-miR-6504-5p; hsa-miR-147; hsa-miR-191; hsa-miR-30b; hsa-miR-30c; hsa-miR-342-5p; hsa-miR-512-3p; hsa-miR-548d-3p; hsa-miR-609; hsa-miR-637; hsa-miR-665; hsa-miR-765; hsa-miR-887; hsa-miR-935 CUX1; FOXD3; FOXF2; FOXO4; IKBKB; IKBKG;
MAX; MXI1::CLEC5A; NKX2-2; NKX3-1; NR3C1; POU2F1; POU2F2; POU3F1; POU3F2; POU3F3; POU5F1; SRY; TCF3; USF1; ZEB1
CCR6 hsa-miR-518a-3p; hsa-miR-150-5p CTCF
IL6 hsa-let-7a-5p; hsa-miR-203a-3p; hsa-miR-142-3p; hsa-miR-26a-5p; hsa-miR-365a-3p; hsa-miR-107; hsa-let-7c-5p; hsa-miR-149-5p; hsa-miR-223-3p AR; ATF1; CEBPA; CEBPB; CEBPD; CREB1; CTCF; EGR1; FOS; IRF1; IRF5; JUN; MYC; NFE2; NFIC; NFKB1; NFKB2; PBX1; PPARG; RARA; REL’ RELA; RREB1; STAT3; STAT5A; TP53
USF1; ZBTB16
LYNX1 hsa-miR-491-5p; hsa-miR-214; hsa-miR-324-3p; hsa-miR-324-5p; hsa-miR-330-5p; hsa-miR-370; hsa-miR-423-5p; hsa-miR-432; hsa-miR-511; hsa-miR-516a-5p; hsa-miR-526b; hsa-miR-608; hsa-miR-612; hsa-miR-637; hsa-miR-940; hsa-let-7a; hsa-let-7b; hsa-let-7c; hsa-let-7e; hsa-let-7f; hsa-let-7g; hsa-let-7i; hsa-miR-137; hsa-miR-144; hsa-miR-149; hsa-miR-153; hsa-miR-217; hsa-miR-338-5p; hsa-miR-365; hsa-miR-371-5p; hsa-miR-376a; hsa-miR-376b; hsa-miR-383; hsa-miR-548b-5p; hsa-miR-568; hsa-miR-574-3p; hsa-miR-587; hsa-miR-589; hsa-miR-655; hsa-miR-760; hsa-miR-98; hsa-miR-301b; hsa-miR-148a
hsa-miR-152; hsa-miR-519c; hsa-miR-301a
CTCF
TNFSF8 hsa-miR-24-3p; hsa-miR-146b-3p; hsa-miR-200b; hsa-miR-429; hsa-miR-525-3p; hsa-miR-626; hsa-miR-768-5p; hsa-miR-885-5p NIL
TNFRSF1A hsa-miR-29a; hsa-miR-29b; hsa-miR-29c; hsa-miR-22; hsa-miR-29a; hsa-miR-29b; hsa-miR-29c; hsa-miR-558 DAXX; EP300; IKBKB; IKBKG; JUN; STAT1
VDR hsa-miR-125b-5p; hsa-let-7a-5p; hsa-miR-27b-3p; hsa-miR-124; hsa-miR-125b; hsa-miR-506; hsa-miR-544 BACH2; CREBBP; CTCF
FOS; FOSB; FOSL1; GTF2B; HMGN3;HNF4A;
HR; JUN; JUNB; JUND; KDM5A; LMO2; MAX; MED1; NCOA1; NCOA2;
NCOA6; NR0B2; NR1H2;
NRIP1; RXRA; RXRB;
RXRG; SMAD3; SNW1;
STAT1; TRIM24
NOD2 hsa-miR-122-5p; hsa-miR-122-3p; hsa-miR-495; hsa-miR-671-5p MAX; MXI1::CLEC5A
NFKB1; REL; SPI1; USF1
STAT3 hsa-miR-20b-5p; hsa-miR-337-3p; hsa-miR-21-5p; hsa-miR-92a-3p; hsa-miR-20a-5p; hsa-miR-124-3p; hsa-miR-130b-3p; hsa-miR-106a-5p; hsa-miR-106b-5p; hsa-miR-874-3p; hsa-miR-4516; hsa-miR-17-5p; hsa-miR-181a-5p; hsa-miR-1234-3p; hsa-miR-106a; hsa-miR-106b; hsa-miR-124; hsa-miR-125b; hsa-miR-130a; hsa-miR-17; hsa-miR-17-5p; hsa-miR-20a; hsa-miR-20b; hsa-miR-21; hsa-miR-372; hsa-miR-410; hsa-miR-495; hsa-miR-506; hsa-miR-519a; hsa-miR-519b-3p; hsa-miR-519c-3p; hsa-miR-519d; hsa-miR-665
hsa-miR-93
AR; ATF1; ATF2; ATF3;
ATF4; ATF5; ATF6; ATF7; BHLHE40; BRCA1; CEBPB; CREB1
CREBBP; DAXX; EIF2AK2; EP300; FOXM1; GATA1; GATA2; GTF2I; HDAC1; HDAC2; HDAC3; HES1;
HIF1A; HNF1A; IRF9; JUN; KAT5; KHDRBS1;
MAX; MXI1::CLEC5A;
MYC; MYOD1; NCOA1;
NFKB1; NMI; NR3C1;
PIAS1; PIAS2; PIAS3;
PIAS4; PML; POU3F1;
PTMA; RARA; RELA;
STAT1; STAT4; STAT5A
STAT5B; TFAP2A; TP53
USF1; ZNF148; ZNF467
SLC9A3R1 hsa-miR-24-3p; hsa-miR-146b-3p; hsa-miR-149; hsa-miR-200b; hsa-miR-200c; hsa-miR-24; hsa-miR-339-5p; hsa-miR-367; hsa-miR-532-5p; hsa-miR-548c-3p; hsa-miR-608; hsa-miR-632; hsa-miR-659; hsa-miR-663; hsa-miR-874 CTCF; CTNNB1; E2F1; E2F2; E2F3; E2F4; E2F5; E2F6; E2F7; PPARG; SP1
SOCS3 hsa-miR-203a-3p; hsa-let-7f-5p; hsa-miR-19a-3p; hsa-miR-221-3p; hsa-miR-155-5p; hsa-miR-19a; hsa-miR-19b; hsa-miR-203; hsa-miR-218; hsa-miR-221; hsa-miR-30a; hsa-miR-30b
hsa-miR-30e; hsa-miR-340; hsa-miR-561; hsa-miR-665; hsa-miR-765
AHR; ARNT; E2F1; ESR1
NFKB1; RELA; REST; STAT1; STAT2; STAT3
STAT4; STAT5A; STAT5B; STAT6; TCEB1; TCEB2; YY1
BSG hsa-miR-22-3p EGR1; EGR2; MAX; MXI1::CLEC5A; MYC;
TFAP2A; TFAP2C; USF1
JUNB hsa-miR-663a; hsa-miR-101; hsa-miR-199a-5p; hsa-miR-199b-3p; hsa-miR-30d; hsa-miR-30e; hsa-miR-328; hsa-miR-495; hsa-miR-526b; hsa-miR-566; hsa-miR-615-5p; hsa-miR-656; hsa-miR-663; hsa-miR-675; hsa-miR-744; hsa-miR-886-5p; hsa-miR-936 ATF1; ATF2; ATF3; ATF4; ATF5; ATF6; ATF7; BATF; BCL6; BRCA1; CREB1; E2F1; ESR1; ETS2; FOS; FOSB; FOSL1; FOSL2; FOXO4;
JDP2; MAX; MXI1::CLEC5A, MYC
MZF1; NFE2L1; NFKB1
SMAD3; SMAD4; SRF
TBP; TFAP2A; TFAP2C
TFAP4; USF1
TGFB1 hsa-miR-24-3p; hsa-miR-29b-3p; hsa-miR-144-3p; hsa-miR-633; hsa-miR-663a; hsa-miR-211-5p; hsa-miR-17-5p; hsa-miR-19b-3p; hsa-miR-93-5p; hsa-miR-324-3p; hsa-miR-122-5p; hsa-miR-130a-3p; hsa-miR-21; hsa-miR-24 AR; CEBPA; CEBPB; CREB1; CTCF; DAXX; EGR1; EPAS1; FOS; GATA1; HIF1A; JUN; LMO2; MYC; MZF1; PAX5; PPARA; RARA; SMAD2; SMAD3; SMAD4; SP1; SP3; TP53; USF1; USF2; WT1; YY1
RNF114 hsa-miR-3064-5p; hsa-miR-6504-5p EGR1; hsa-miR-124; hsa-miR-218; hsa-miR-492; hsa-miR-506; MAX; SP1;
USF1
RPTOR hsa-miR-99a; hsa-miR-100; hsa-miR-155-5p CEBPA; DDIT3; RFX1; TLX2

Table 1: Associated genes, miRNAs and transcription factors of Psoriasis (Top-down approach).

Further the genes, miRNAs and proteins in top-down were subjected to network analysis and the further details about the statistical methods were given below.

Network analysis of top-down approach (Cytohubba)

Genes and their regulators in Top-down approach were subjected to the analysis by various statistical methods (Degree, Edge Percolated Component, Maximum Neighborhood Component, Density of Maximum Neighborhood Component, and Maximal Clique Centrality with six centralities Bottleneck, EcCentricity, Closeness, Radiality, Between-ness and Stress) to identify the their connectivity. The results of Analysis were given in Table 2.

Rank Methods for Analysis of Shortest Path of Regulators in Top-down Approach (Cytohubba)
MCC DMNC MNC Degree EPC Bottle Neck Eccentricity Closeness Radiality Between-ness Stress Clustering coefficient
1 STAT3 hsa-miR-130a STAT3 IGF1R IGF1R STAT3 NFKB1 STAT3 STAT3 IGF1R IGF1R hsa-miR-410 has-miR-20a
RARA IGF1R EGR1
hsa-miR-21
hsa-miR-665
NFYA
POU2F1
SMAD3
hsa-miR-656
PML
hsa-miR-519a
2 IGF1R Nil JUNB BCL2 STAT3 Nil Nil IGF1R IGF1R STAT3 BCL2 Nil
3 JUNB Nil BCL2 STAT3 BCL2 JUNB TGM1 BCL2 NFKB1 BCL2 IGF1 PML hsa-miR-519c-3p hsa-miR-17
hsa-miR-130a
CCL20
SP1
IFIH1
hsa-miR-186
STAT2
CCL2
4 BCL2 Nil TNF IGF1 IGF1 IL6 Nil NFKB1 RELA IGF1 TNF Nil
5 IGF1 Nil EIF4E TNF TNF IRF2 Nil RELA MYC TNF IL6 Nil
6 TNF Nil STAT2 IL6 IL6 BCL2 Nil IGF1 JUNB JUNB STAT3 hsa-miR-519c-3p
7 EIF4E Nil TNXB JUNB JUNB TNF Nil MYC BCL2 IL6 IL24 STAT6 STAT4 FOSL1 hsa-miR-519a
IL6
8 IL6 Nil NIL EIF4E EIF4E TGFB1 Nil JUNB MAX IRF2 IRF2 Nil
9 TNXB Nil IGF1 TNXB NFKB1 IL23A Nil MAX IGF1 EIF4E TNXB Nil
IGF1R
10 STAT2 Nil NIL IRF2 TNXB SLC9A3R1 Nil JUN JUN IL24 CYLD Nil

Table 2: Network analysis (Top-down approach).

Pathway analysis (Annotation)

The obtained genes from PubMed/DisGeNET/OMIM were subjected to pathway analysis in PANTHER by the principle of the Bonferroni correction for multiple testing and the result is illustrated as Pie Chart (Figure 1).

medical-reports-case-studies-pathway-analysis

Figure 1: Pathway analysis of Top-down approach.

In case of Pathway Analysis, the genes associated with Psoriasis follows the hierarchy of Inflammation mediated by Chemokine and Cytokine signaling pathway, Gonadotropin-releasing hormone receptor pathway, ECF receptor signaling pathway and CCKR signaling map. In case of Annotation analysis, it is evident that these regulators play a vital role in the pathways (Apoptosis Signaling pathway, CCKR Signaling, Gonadotropin releasing hormone receptor pathway, Interleukin Signaling pathway, JAK/STAT signaling pathway, Oxidative Stress response and PDGF signaling pathway) associated with Psoriasis and it was also clear from studies of text mining in PubMed; has-miR-103 and has-miR-107 is associated with the 3’ UTR region of CDK5R1, hsa-miR-125a-3p is associated with the clinical implication of inflammatory skin and hsa-miR-138 is responsible for inhibiting the expression of RUNX3 in Psoriasis but till date there is no experimental evidence in PubMed to illustrate the role of hsa-miR-24 in Psoriasis.

Conclusion

Overall network analysis of Top-down approach, 45 potential regulators of Psoriasis [35 Transcription Factors (STAT3, IGF1R, JUNB, BCL2, IGF1, TNF, EIF4E, IL6, TNXB, STAT2, RARA, NFYA, POU2F1, SMAD3, PML, IRF2, NFKB1, TGFB1, IL23A, SLC9A3R1, EGR1, TGM1, CCL20, SP1, IFIH1, CCL2, RELA, MYC, MAX, JUN, IL24, CYLD, STAT6, STAT4 and FOSL1) and 10 miRNAs (hsamiR- 130a, hsa-miR-21, hsa-miR-665, hsa-miR-656, hsa-miR-519a, hsa-miR-186, hsa-miR-186, hsa-miR-410, has-miR-20a, hsamiR- 519c-3p and hsa-miR-17)] were retrieved. In biological context, the potential regulators of psoriasis have a maximum probability to become a potential biomarker for Psoriasis and the identical pattern between the comparative-network analysis of bottom-up and direct approach illustrate the fact that there is a maximum probability for those potential regulators to be considered to treat psoriasis in future.

References

Citation: Harishchander A (2017) Computational Analysis of Regulatory Network in Psoriasis by Top-Down Approach: An Initiation towards Identifying a Novel Biomarker to Diagnose and Treat Psoriasis in Future. Med Rep Case Stud 2: 143.

Copyright: © 2017 Harishchander A. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.