MSc, BSc

Muralidharan currently serves as Junior Research Fellow at Amrita School of Biotechnology. He also serves as the technology assistant at Amrita Agilent Analytical Research Centre, School of Biotechnology. He received his masters in Biotechnology from Amrita Vishwa Vidyapeetham, Amritapuri in 2012. He is currently pursuing his doctoral degree in Biotechnology at Amrita Agilent Analytical Research Centre, School of Biotechnology.


  • MSc. Biotechnology, Amrita Vishwa Vidyapeetham (2012).
  • Diploma in Bioinstrumentation, Bharathiar University (2010).
  • Bsc. Biotechnology, Bharathiar University (2010).


  • Technology Assistant, Amrita Agilent Analytical Research Centre (current).
  • Junior Research Fellow, Amrita Institute of Medical Sciences and Research Centre.


  • Awarded with Junior Research Fellowship from Amrita Vishwa Vidyapeetham.
  • Qualified GATE-Biotechnology, March 2012.


  • Diabetes and Vascular Inflammation
  • Proteomics
  • Mass Spectrometry and High Performance Liquid Chromatography (HPLC) Techniques


  • Two month operator's training course for Agilent LC/MS: Agilent OpenLAB Chemstation, Agilent 1290 uHPLC, Agilent 6340 LC/MS Iontrap, Agilent 8354 UV-Visible Spectrometer, held at the Amrita Agilent Analytical Research Centre, Amrita School of Biotechnology from 5th August - 5th October,2013 headed by Dr.Walter Schrenk, Associate Professor, Amrita School of Biotechnology.
  • Development of Analytical methods in High Performance Chromatography, uHPLC, 2-Dimensional HPLC and Mass Spectrometry for the analysis, isolation and identification of active components out of plant extracts with potential medical uses under the guidance of Dr.Walter Schrenk and Dr.Sudarslal S, the Associate Professors at Amrita School of Biotechnology, from January to May 2014.



Muralidharan V.
Amrita Agilent Analytical Research Centre
School of Biotechnology
Amrita Vishwa Vidyapeetham (Amritapuri Campus)
Clappana P.O., Kollam, Kerala, India. 690525
Tel +91 (0)476-2803000 Extn:3126


Publication Type: Journal Article

Year of Conference Title


Divya Nair, Muralidharan Vanuopadath, Balasubramanian, A., Iyer, A., Ganesh, S., Anil, A. Nair, Vikraman, V., Pillai, P., Bose, C., Dr. Bipin G. Nair, Pai, J. Gopalakris, and Nair, S. Sadasivan, “Phlorotannins from Padina tetrastromatica: structural characterisation and functional studies”, Journal of Applied Phycology, pp. 1–11, 2019.[Abstract]

In this study, LC–MS/MS-based structural characterisation of phlorotannins from Padina tetrastromatica, a marine brown macroalga collected from South-West coastal region of Kerala, and its bioactivities are presented. The tandem mass spectrometric data revealed a series of phlorotannins with degree of polymerisation ranging from 2 to 18. The characteristic neutral loss of tandem mass spectra further confirmed that these molecules belong to fucophlorethol class of phlorotannins. DPPH assay of the HPLC-purified, phlorotannin-enriched fraction possesses significant free radical-scavenging activity. Cell viability assay indicated that phlorotannin concentration ranging from 1.5 to 50.0 μg mL−1 is non-toxic to THP-1 cell lines. Anti-inflammatory assay performed through gelatin zymography confirmed that phlorotannins ameliorated high-glucose-induced pro-MMP-9 expression in a dose-dependent manner whereas the level of pro-MMP-2 remains unaltered. The antimicrobial assays carried out using both the crude and HPLC-purified phlorotannin fraction showed its anti-MRSA potential.

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Raja Biswas, Chatterjee, M., D'Morris, S., Baranwal, G., Warrier, S., Vasudevan, A., Muralidharan Vanuopadath, Nai, S., and Mohan, C., “Lactobacillus Fermentum Secreted Phenyl Lactic Acid Mediates Quorum Quenching in Pseudomonas Aeruginosa”, 2016.


Muralidharan Vanuopadath, Divya Nair, Dr. Bipin G. Nair, and Sudarslal Sadasivan Nair, “Post-translational Modifications of Proteins: Biomarkers and Therapeutic Targets for Diabetes Related Complications”, Current Proteomics, 2016, vol. 13, 2016.[Abstract]

Diabetes Mellitus is a chronic metabolic disorder that is often associated with various complications including micro- and macro- angiopathies. The increase in mortality rates associated with these complications is one among the major factors that compels to define proper therapeutic strategies. Protein signatures including their post-translational modifications that are modulated under various disease conditions enabled the biomarker discovery processes and thereby facilitate to predict and diagnose the disease onset at an earlier stage. The identification of the post-translationally modified proteins not only enabled the biomarker prediction associated with various disease conditions but also has a great impact in target based drug discovery process. Mass spectrometry based proteome profiling aided the identification and characterization of these site specific modifications that had a huge impact on various functional aspects in a biological context. In this review, we tried to compile and discuss the information available regarding some of the modified proteins with regard to deregulated glucose metabolism. Several commonly observed modifications including glycosylation, hydroxylation, phosphorylation, nitration, nitrosylation and carbonylation that seem to have a major role in the management of diabetes disorders are summarized. Moreover, the importance and impact of less explored post-translational modifications such as palmitoylation, carbamylation, deamidation and SUMOylation that are associated to diabetes related complications are described. More »»


Divya Nair, Muralidharan Vanuopadath, Dr. Bipin G. Nair, Dr. Jayashree G., and Sudarslal Sadasivan Nair, “Identification and characterization of a library of surfactins and fengycins from a marine endophytic Bacillus sp.”, Journal of basic microbiology, vol. 56, pp. 1159–1172, 2016.[Abstract]

An endophytic bacterial strain from a marine green alga,Ulva lactuca, was isolated and identified by 16S rRNA gene sequencing method. The bacterial isolate was found to secrete two major families of cyclic depsilipopeptides, surfactins, and fengycins. Sequencing of the isolated lipopeptides was carried out using the MSndata obtained from an electrospray ionization (ESI) ion trap mass spectrometer coupled to an HPLC system. The assigned sequences were confirmed by a chemical derivatization approach involving esterification followed by mass spectrometric analysis. Distinction of leucine residues from isoleucine was established through a combined electron transfer dissociation-collision-induced dissociation (ETD-CID) method. The fengycins described in this study were found to cause significant delay of growth of two plants,Vigna radiata(mung bean) andOryza sativa(rice). To the best of our knowledge, this is the first study describing identification and characterization of cyclic peptides from an endophyticBacillus sp. isolated from marine algae.

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Naoshad Mohammad, Shivendra Vikram Singh, Parmanand Malvi, Balkrishna Chaube, Dipti Athavale, Muralidharan Vanuopadath, Sudarslal Sadasivan Nair, Dr. Bipin G. Nair, and Manoj Kumar Bhat, “Strategy to enhance efficacy of doxorubicin in solid tumor cells by methyl-β-cyclodextrin: Involvement of p53 and Fas receptor ligand complex”, Scientific reports, vol. 5, 2015.[Abstract]

Doxorubicin (DOX) is one of the preferred drugs for treating breast and liver cancers. However, its clinical application is limited due to severe side effects and the accompanying drug resistance. In this context, we investigated the effect on therapeutic efficacy of DOX by cholesterol depleting agent methyl-β-cyclodextrin (MCD), and explored the involvement of p53. MCD sensitizes MCF-7 and Hepa1-6 cells to DOX, Combination of MCD and marginal dose of DOX reduces the cell viability, and promoted apoptosis through induction of pro-apoptotic protein, Bax, activation of caspase-8 and caspase-7, down regulation of anti-apoptotic protein Bcl-2 and finally promoting PARP cleavage. Mechanistically, sensitization to DOX by MCD was due to the induction of FasR/FasL pathway through p53 activation. Furthermore, inhibition of p53 by pharmacological inhibitor pifithrin-α (PFT-α) or its specific siRNA attenuated p53 function and down-regulated FasR/FasL, thereby preventing cell death. Animal experiments were performed using C57BL/6J mouse isografted with Hepa1-6 cells. Tumor growth was retarded and survival increased in mice administered MCD together with DOX to as compared to either agent alone. Collectively, these results suggest that MCD enhances the sensitivity to DOX for which wild type p53 is an important determinant.

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PDF iconstrategy-enhance-efficacy-doxorubicin-solid-tumor-cells-methyl-cyclodextrin-involvement-of-p-53-and-fas-receptor-ligand-complex-01july2015.pdf

Publication Type: Conference Proceedings

Year of Conference Title


Divya Nair, Muralidharan Vanuopadath, Dr. Bipin G. Nair, Jayashree G, and Sudarslal S, “Isolation and Characterisation of Lipopeptides from a Bacillus subtilis sp. Strain, a marime algal endophyte”, Fourth International Seminar on Sustainable Utilisation of Tropical Plant Biomass- Ayur informatics. pp. 89-91, 2014.