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International Journal of Inflammation, Cancer and Integrative Therapy
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Computation in Analyzing Inflammation: A General Perspective

Amit Kumar Banerjee*

Biology Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad-500007, Telangana, India

*Corresponding Author:
Amit Kumar Banerjee
Biology Division, CSIR-Indian Institute of Chemical Technology
Uppal Road, Tarnaka, Hyderabad-500007, Telangana, India
Tel: +91-4027191361
E-mail: amit_informatics@yahoo.com

Received date: April 15, 2015 Accepted date: April 27, 2015 Published date: April 30, 2015

Citation: Banerjee AK (2015) Computation in Analyzing Inflammation: A General Perspective. Interdiscip J Microinflammation 2:130. doi: 10.4172/2381-8727.1000130

Copyright: © 2015 Banerjee AK, 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.

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Introduction

Immunology has grown as a great subject over the years and has evolved as an amalgamation of multiple disciplines and allied sub disciplines as per scientific investigation is concerned. Almost all living being responds towards the stimulation caused by their internal and external surrounding environment in a stepwise manner. Biologically, this is done through a number of cascading physiological and biochemical phenomena. Depending on the specificity, emergency and other important factors, the type of responses alters. Understanding these complex phenomena has been a challenge for the global scientific community since long time.

Immunological reactions claim its own importance due to its association with survival of the individual. Natural process of combating invading pathogens or self-healing after accidents raised the curiosity of the global scientific community to understand the phenomena in detail and boost up the procedure for better healing and cure. Involvement of multiple factors and their complex interactions did not allow us so far to understand the situations completely as it differs greatly from case to case. Considering all the physiological, biochemical, environmental and other factors at a time and understanding their individual impact during the response is a cumbersome task. Requirement of alternative approach is the demand of the hours.

Inflammation

Inflammation, under the light of science could be understood by two means. Information related to the signaling pathways plays pivotal role in invoking inflammatory response and anti-inflammatory pathways involved in diminishing the event of inflammation. In natural cases, the process of inflammation is controlled by innate immunity which follows identification of the microbial pathogens, triggering the defense mechanism against the pathogen through inflammatory cells and subsequent actions depending on the requirement. Any infection, mostly associated with inflammation, ultimately results in different effect such as restoration of damaged tissue architecture, chronic inflammatory response, appended autoimmune response, tissue scarring etc.

Identification and targeting the invading pathogens could be done through various receptors such as Toll like receptors (TLRs), Lectins(C-type), Integrins, cytokines etc. Available literature information revealed that several signaling pathways take part in invoking and regulating the responses related to inflammation such as TIR(Toll-interleukin-1 receptor) signaling cascade, IFN (Interferons) pathway, TAK1(Transforming growth factor-β Activated Kinase-1) pathway, NFκB (Nuclear Factor kappa-light-chain-enhancer of B cells) and MAP Kinase (Mitogen-Activated Protein Kinases) pathway, Caspase pathway [1]. Diminishing the inflammatory responses through prostaglandin, TGFβ and other molecules is done naturally by the innate immune system based on the requirement. Therefore, involvement of many factors, pathways and types of response raised the complexity of the overall process.

Emergence of System Biology

Computational and system biology emerged for such complex biological problems and aided several reliable, timely and logical near truth solutions so far. Evidence of application of such computational, mathematical and statistical approaches is available in ample amount in the literature [2,3]. Mathematical and statistical approaches have proved eminence in simplifying, modeling and understanding several biological phenomena and extract several important interrelations of biomolecules. System biological methodologies upgraded the scenario one step ahead and are being used for understanding various vital parametric interrelations of biological components and biological networks, such as, gene, protein, disease [4,5], microbiome and other important and highly complex networks. Intriguing investigation incorporating experimental and computational methods or system biology are providing solutions to several unresolved queries related to the complex biological phenomena [6,7].

Advancement in both experimental and theoretical techniques and emergence of system biology as a whole enabled us to deep investigate complex biological phenomenon from a vantage point. Quantitative and qualitative analyses are now possible due to the availability of large generated data pool and massive analysis programs. Large problem describing and framing computational platforms such as SBML [8], SBEAMS [9] and visualization and analytical tools such as CYTOSCAPE [10], PAJEK [11] made the feasibility for understanding the negative or positive impact of each component on a whole system. Computation with respect to immune system modeling and inflammation has gained momentum due to the enormous possibility in exploring multiple unanswered questions [12-15]. In the process of understanding immune system, artificial immune system and immune network algorithm was developed which mimics the learning and memorizing capability of natural immune system and is being applied in diverse problems.

Example analysis of the proteins involved in inflammatory responses

It is crucial and present need to understand the protein-protein interactions for inter and intra pathway connectivity. As mentioned earlier, various pathways are involved in either inflammation induction or reduction. Moreover, this scenario may alter from species to species, genus to genus or even between individuals belonging to the same species.

Sophisticated system biological approach allows us to compare and gain insight in such cases and aid in focusing on the relevant problem in consideration. Estimating the involvement of all proteins in any of the inflammation associated pathway is cumbersome through experimentation. Employing statistical association measures it is feasible to narrow down the vast number of associated proteins for a particular pathway and extract most relevant information.

A general analysis was performed considering the major proteins in the pathways involved in invoking inflammation (Interleukin10, Caspase pathway, NFκB and Toll like receptors) and those which play role in diminishing inflammation (Prostaglandin). The ten most relevant proteins which may play role in protein-protein interaction are identified through STRING [16,17] algorithm. In few cases comparison was done between different species to find the resemblances and variations among the associated proteins.

Information on important pathway proteins associated in Caspase pathway (Figures 1A-1C) and other proteins and their respective possible network formation such as IL10, NFκB and Toll Like receptor in Homo sapiens which are related to inflammation were analyzed and visualized (Figure 1). The obtained network represents the complexity in interaction among the associated protein in human.

interdisciplinary-microinflammation-Network-representation-Caspase

Figure 1: Network representation of Caspase along with the association with most relevant proteins in (A) Homo sapiens, (B) Bos Taurus and (C) Mus musculus . Other important and relevant protein networks in relation to inflammation are shown, such as (D) IL10, (E) NFκB and (F) TLR.

Prostaglandin is a known hormone like lipid compound which has proven role in diminishing inflammation. Exact relevant proteins associated functionally are not known in different organisms. Obtained data represents the higher degree of association of prostaglandins with different proteins in different species (Figure 2). The varying complexity of the network and existence of different type of proteins in each network hints towards the higher degree of complexity. Analysis of individual cases and mathematically modeling certain aspects would be beneficial rather imposing a general mandate for each situation.

interdisciplinary-microinflammation-protein-protein-association

Figure 2: Representation of protein-protein association network for the Prostaglandin in six different species, i.e., (A) Bos taurus, (B) Cavia porcellus, (C) Equus caballus , (D) Gallus gallus , (E) Homo sapiens , (F)Mus musculus , (G)Oryctolagus cuniculus and (H) Rattus norvegicus.

Depiction of the proteins associated intensely with Prostaglandin in Homo sapiens, Bos taurus and Mus musculus are represented here (Figure 2).Varying degree of association with diversity in interacting protein molecules is evident from the obtained results. An example of the direction of interrelation of the proteins in Cavia porcellus is provided (Figure 2B), whereas, for Gallus gallus (Figure 2D) and Rattus norvegicus (Figure 2H) representation of the network strength is shown. Thus various modes of representation and visual information yields in better understanding of the interactions.

Knowing inflammation through computation

Inflammations induced through injury are of two major types, intentional, that is due to surgical issues and unintentional or accidental injury. Sudden or induced onset of inflammation includes different signaling pathways leading to the inflammatory response involving numerous factors. In this situation, accounting the cause and effect of the inflammation is important where failing to adopt crucial decision on time may lead to death of the patient.

Estimation of such cause and effect relation for inflammation through traditional medical procedure is cumbersome and so far does not have any standard protocol. Therefore, interdisciplinary approach, especially implementation of predictive measures and assessing their possible outcomes are important [18]. Hence, application of advanced computational methodologies to predict and estimate the relevant issues adhering to inflammation qualitatively and quantitatively is necessary. To compute qualitatively, agent based modeling is predominant in providing reliable solution whereas quantitative calculations are done applying differential equations or partial differential equations.

Gene regulatory networks in inflammation

Studies have been conducted in the recent past on modeling inflammatory events in natural conditions involving multiple signaling pathways. In parallel, computational analysis have been done considering accidental cases where the impact of each component is sudden and ever dynamic. Advanced modeling using experimental datasets and bioinformatics applications helped in construction of gene regulatory network associated with inflammation [19]. This kind of effort may aid in collecting and understanding the overall contribution of the genes in relation to inflammation.

Sudden injury and acute inflammation

Acute inflammation is another important aspect where on spot decision from medical science is vital. Sudden and general burn conditions due to accident are a cause of concern for emergency medicine discipline. Although, depending on the degrees of burning treatments are available but critical cases are requiring more advanced and precise approach. Thermal injury induced models considering interaction of components at different stages of pro-inflammatory conditions and quantitation of the dynamics of NFκB and transcriptional responses has been reported earlier [18]. Certain efforts yielded information in understanding the non-linearity with respect to inflammation, distinguishing effective and unresponsive functionality of the respective responses and impact of application of specific antagonist depending on the circumstances.

Tracking acute inflammatory response

Acute inflammatory response due to trauma or other incidence invokes simultaneously at multiple physiological levels. Experimental analysis to mimic such incidence in animal models had not yielded much information. Mathematical modeling could be a better alternative in such cases where all the impacting variables could be assessed individually or collectively. The incidence of acute inflammation in animals has been computed and represented through mathematical models in the study reported by Vodovotz et al. where experimental information has been used as reference. The outcome received in this study, turned out to be satisfactory [20]. Assessment of dosage variation of lipopolysaccharide, surgical trauma with relevant factors and associated hemorrhagic shock was experimentally and theoretically evaluated and the obtained results showed promises in future reduction of animal use for such studies.

Computing pro and anti-inflammatory signaling and vocal injury

Macrophages play an important role in inflammation reduction. Therefore, understanding the signaling mechanism related to the activity of macrophage is essential. Experimental investigations revealed that several signaling pathways are involved in this process, such as, TNF-α, interleukin-10, cytokines, nuclear factors, etc. Only experimental analysis may not provide the detail information in this regard. Poor expression of proteins in the cell may not yield proper information about the impact of different proteins in the pathway cascade and related feedback mechanism. Through computational modeling, it is possible to understand the up regulation and down regulation of such proteins along with their combined effects. Existing reports in this regard provided valuable outlook on the feedback mechanism and relevant impact for certain factors, such as, TNF-α, IL10, cytokines and others in relation to pro and anti-inflammatory signaling [21]. Modeling and analysis of multiple up regulation and down regulation associated component of inflammatory signals may yield a better and clear perspective about the network components and corresponding interactions.

Vocal injury and its connection to inflammation is a common issue in all population. In silico model has been developed considering the individual patient-specific conditions and healing aspects for acute cases of vocal injury. Agent based modeling (ABM) has been implemented for simulating cause and effect of mediators involved in laryngeal secretions. Computational experimentation related to patient specific conditions showed variation in trajectories generated through computation, hinting towards effective and possible future application of mathematical modeling techniques. Successful application of computational analytical procedures in a specific manner may support the objective of achieving personalized medicine in near future [22].

System biology based approaches helped in understanding diseases and other intricate biological events which cannot be known easily through individual traditional experimentation. Expansion of system biology has paved the path towards personalized medicine where individual large scale modeling is possible. Although, to gain further insight regarding inflammation through computation, no standard computational protocol is available so far, yet the strategies to design and analyze the experiments follow some general procedure (Figure 3).

interdisciplinary-microinflammation-flow-computational-prediction

Figure 3: General flow of computational prediction to understand inflammation and gain information beyond experimentation.

Conclusion

Initiated with estimation of single parameter, mathematical modeling and computational techniques are playing major role in all aspect of scientific discipline including intriguing and dynamic biological problems. Advanced methods along with the support from sophisticated software and hardware are being used in the present days to solve complex problems. Moreover, improvement in bulk data generation methodologies yielded extreme opportunities to theoretical experimentation and allowed us to reach near the real time solutions. Evolution in computational techniques in relation to big data analysis, gigantic data representation and visualization aided ample opportunities to analyze large and dynamic problems collectively. Development of system biology was possible due to this revolution in information technology. Classical computational, statistical or mathematical approaches generally deal with top down approach where surface to deep level analysis is feasible. Era of system biology and personalized medicine altered the efforts and thinking of vast computation and follows a bottom up approach to understand a complex cascade of biological events. In this approach, numerous variables are considered simultaneously and are being treated differently case to case basis, hence supporting the concept of personalized medicine through computation. We are in vicinity to the success related to personalized medicine along with understanding immune system and inflammation applying theoretical techniques. System biological analysis combined with high throughput experimental protocols may aid in understanding each aspect individually within a limited and appropriate time frame.

Acknowledgements

I would like to acknowledge the tremendous efforts of those researchers who are continuing to understand the immune system applying computational approach.

References

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Review summary

  1. Daniel
    Posted on Feb 02 2017 at 6:13 pm
    I found this article interesting and informative. Later on, the author may enlighten us with detail write-up regarding computational immunology. Awaiting for such contribution.
  2. Stuart
    Posted on Jan 31 2017 at 8:11 pm
    This is an excellent article to gain the basic information on the intricate subject of computational immunology. I thank the author for the article.
  3. Allen
    Posted on Dec 28 2016 at 2:27 pm
    The article provided a good outlook about the intense topic of computational immunology and system biology. Well written article, would like to witness more from the author.
  4. Steward
    Posted on Dec 28 2016 at 2:25 pm
    This article represents an outstanding summary of the computational methods applied in understanding inflammation and associated immunology. I would like to thank the author for his nice contribution.
  5. RUMPY NANDI
    Posted on Jul 12 2016 at 12:08 pm
    This article provides an excellent outlook to an interesting topic consisting computation and inflammation. I appreciate the presentation of the author.
 

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