Dr. Sagar Bag

@caluniv.ac.in

Senior Researcher, Department of Biophysics, Molecular Biology and Bioinformatics
University of Calcutta

Dr. Sagar Bag
Senior Researcher with a demonstrated history of working in the higher education institutes. Skilled in Biotechnology, Cancer Research, Animal handling, Life Sciences, and Pharmaceutical. Strong research professional with a Master of Science (Specialization in Advanced Genetics & Molecular Biology). Hand on experience and knowledge of various Biophysical techniques such as Ultraviolet–visible spectroscopy, Circular dichroism (CD) spectroscopy, Fluorescence spectroscopy, Isothermal titration calorimetry (ITC), Molecular docking, simulations, FTIR, NMR, Cell culture techniques. Data analysis experience using specific software and use of various sources including related databases of publications and internet resources.

EDUCATION

Dr. Sagar Bag ( Former CSIR UGC NET SRF; DST-INSPIRE Fellow; University of Calcutta) is currently working as a Senior researcher. His research mainly focuses on different aspects of Genetics & Molecular Biological Techniques, Biophysical chemistry, Non-canonical DNA. Senior Researcher with a demonstrated history of working in the higher education institutes. Skilled in Biotechnology, Cancer Research, Animal handling, Life Sciences & Pharmaceutical research.

RESEARCH, TEACHING, or OTHER INTERESTS

Multidisciplinary, Biochemistry, Genetics and Molecular Biology, Biophysics, Molecular Medicine
33

Scopus Publications

704

Scholar Citations

13

Scholar h-index

14

Scholar i10-index

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

  • Microplastics-Induced Binding and Structural Changes in the Milk Proteins: α-Lactalbumin and β-Lactoglobulin
    S Ghosal, S Bag, MD Burman, S Bhowmik
    2026
  • Exploring The Biophysical Interactions And Structural Insights Between Dietary Plant Flavonoids And Various Non Canonical Nucleic Acid Structures
    S Bag
    University of Calcutta , 2026
    2026
  • Selective Stabilization of HRAS2 i-Motif DNA by TMPyP4: A Multimodal Biophysical and Thermodynamic Investigation
    S Bag, S Ghosal, MD Burman, E Chorell, S Bhowmik
    bioRxiv, 2026.04. 08.717182 , 2026
    2026
  • Synthesis of tris-indolylmethanealkaloids by harnessing the nucleophilic reactivity of Indole-BX and studying their interactions with hemoglobin
    S Das, MD Burman, S Bag, R Soren, B Roy, S Bhowmik, RK Nandi
    New Journal of Chemistry 50 (1), 98-108 , 2026
    2026
  • Impact of polystyrene microplastics on human alternative DNA structures
    S Bag, S Ghosal, S Bhowmik
    ChemistrySelect 11 (4), e02999 , 2026
    2026
  • Smart drug in cancer treatment: Design, synthesis and biophysical characterization of uracil-containing cyclic hypervalent iodine (Uracil-BX) reagent with G-quadruplex DNA …
    S Das, S Bag, MA Sk, RK Nandi, S Bhowmik
    Bioorganic Chemistry, 109021 , 2025
    2025
    Citations: 1
  • Naphthalene Diimide‐Based Soft Materials Exhibiting High‐Performance, Tunable Electrical Properties Through Side‐Chain Engineering and Strong Binding Interactions with Human …
    SS Ahamed, N Khatun, MD Burman, S Bag, R Chakraborty, B Panda, ...
    Small 21 (33), 2504759 , 2025
    2025
    Citations: 2
  • Modulation of the HRAS1 I-motif DNA Promoter Region by Dietary Plant Flavonoid Kaempferol
    S Bag, S Ghosal, MD Burman, M Mukherjee, G Pramanik, S Bhowmik
    ACS omega 10 (29), 31381-31392 , 2025
    2025
  • Artificial Intelligence in Cellular and Biomolecular Spectroscopy: A New Horizon
    S Bag, A Manna, S Bhowmik
    Artificial Intelligence (AI) in Cell and Genetic Engineering, 59-72 , 2025
    2025
  • Structural Diversity and Mechanistic Insights on Preferential Interaction of Small Molecule Ligands with i‐Motif DNA Structures: Unlocking New Blueprint for Drug Discovery
    S Bag, S Ghosal, MD Burman, A Manna, S Bhowmik
    ChemistrySelect 10 (24), e01985 , 2025
    2025
    Citations: 3
  • Nickel‐Catalyzed Regioselective Access to Dibenzo [b, e] Azepinones: Mechanistic Study, Docking, and Biophysical Exploration of Binding Interactions with Human Hemoglobin
    SS Ahamed, US Mandal, S Bag, MD Burman, R Lo, D Manna, S Bhowmik, ...
    Chemistry–An Asian Journal, e00030 , 2025
    2025
    Citations: 2
  • Breaking barriers: A new phytomedicine based treatment approach for targeted unrevealed non-canonical DNA structures in tuberculosis bacteria
    S Bhowmik, T Shroff, S Bag, P Kadam, N Mistry
    bioRxiv, 2025.04. 08.647720 , 2025
    2025
  • Exploring i-Motif DNA binding with benzothiazolino Coumarins: Synthesis, Screening, and spectroscopic insights
    S Bag, K Chand, MD Burman, S Vertueux, E Chorell, S Bhowmik
    Bioorganic chemistry 156, 108227 , 2025
    2025
    Citations: 3
  • Microplastics can alter structural configurations of human non-canonical G-quadruplex DNA
    S Bag, S Ghosal, S Bhowmik
    Environmental Toxicology and Pharmacology 114, 104626 , 2025
    2025
    Citations: 7
  • Glycation of proteins and its end products: from initiation to natural product-based therapeutic preventions
    MD Burman, S Bag, S Ghosal, S Bhowmik
    ACS Pharmacology & Translational Science 8 (3), 636-653 , 2025
    2025
    Citations: 12
  • Uracil-BX: A new class of cyclic hypervalent iodine reagents for unraveling approach towards umpolung functionalization and VEGF G-quadruplex DNA identification
    S Das, S Bag, MA Sk, P Majumdar, UK Das, S Bhowmik, RK Nandi
    ChemRxiv 2025 (0130) , 2025
    2025
    Citations: 3
  • Poly (vinyl chloride) microplastics induce structural and functional alterations in myoglobin
    S Ghosal, S Bag, S Bhowmik
    RSC advances 15 (34), 27576-27585 , 2025
    2025
    Citations: 2
  • Understanding the impact of the molecular crowding environment on the glyoxal-mediated glycation of hemoglobin
    MD Burman, S Bag, S Ghosal, S Bhowmik
    Physical Chemistry Chemical Physics 27 (22), 11821-11829 , 2025
    2025
  • Decoding the Potential of HRAS2 i‐Motif DNA Promoter to Become a Pinpoint Target by Phytomedicine Naringenin
    S Bag, S Ghosal, S Bhowmik
    ChemistrySelect 10 (1), e202404775 , 2025
    2025
    Citations: 4
  • Deciphering Preferential Binding Interaction of Synthetic Pyrido [2, 3‐c] Carbazole Alkaloid Derivative (PCAD) with Pu24T G‐quadruplex DNA
    P Pal, S Bag, MD Burman, RK Nandi, S Bhowmik
    ChemistrySelect 9 (28), e202402561 , 2024
    2024
    Citations: 2

MOST CITED SCHOLAR PUBLICATIONS

  • Tea and its phytochemicals: Hidden health benefits & modulation of signaling cascade by phytochemicals
    S Bag, A Mondal, A Majumder, A Banik
    Food Chemistry 371, 131098 , 2022
    2022
    Citations: 196
  • Flavonoid mediated selective cross-talk between plants and beneficial soil microbiome
    S Bag, A Mondal, A Majumder, SK Mondal, A Banik
    Phytochemistry Reviews 21 (5), 1739-1760 , 2022
    2022
    Citations: 149
  • Exploring tea (Camellia sinensis) microbiome: Insights into the functional characteristics and their impact on tea growth promotion
    S Bag, A Mondal, A Banik
    Microbiological Research 254, 126890 , 2022
    2022
    Citations: 101
  • Structural insights and shedding light on preferential interactions of dietary flavonoids with G-quadruplex DNA structures: A new horizon
    S Bag, MD Burman, S Bhowmik
    Heliyon 9 (3) , 2023
    2023
    Citations: 31
  • Insights into the binding interactions between microplastics and human α-synuclein protein by multispectroscopic investigations and amyloidogenic oligomer formation
    S Ghosal, S Bag, S Bhowmik
    The Journal of Physical Chemistry Letters 15 (25), 6560-6567 , 2024
    2024
    Citations: 24
  • Exposure to polyethylene microplastics exacerbate inflammatory bowel disease tightly associated with intestinal gut microflora
    S Ghosal, S Bag, SR Rao, S Bhowmik
    RSC advances 14 (35), 25130-25148 , 2024
    2024
    Citations: 24
  • Unravelling the drug encapsulation ability of functional DNA origami nanostructures: current understanding and future prospects on targeted drug delivery
    S Ghosal, S Bag, S Bhowmik
    Polymers 15 (8), 1850 , 2023
    2023
    Citations: 23
  • Virtual screening and docking analysis of novel ligands for selective enhancement of tea (Camellia sinensis) flavonoids
    A Majumder, SK Mondal, S Mukhoty, S Bag, A Mondal, Y Begum, ...
    Food chemistry: X 13, 100212 , 2022
    2022
    Citations: 19
  • Quercetin exhibits preferential binding interaction by selectively targeting HRAS1 I-Motif DNA-forming promoter sequences
    S Bag, S Ghosal, M Mukherjee, G Pramanik, S Bhowmik
    Langmuir 40 (19), 10157-10170 , 2024
    2024
    Citations: 17
  • Uncovering the contrasting binding behavior of plant flavonoids fisetin and morin having subsidiary hydroxyl groups (− OH) with HRAS1 and HRAS2 i-Motif DNA structures: decoding …
    S Bag, S Ghosal, S Karmakar, G Pramanik, S Bhowmik
    ACS omega 8 (33), 30315-30329 , 2023
    2023
    Citations: 17
  • Multispectroscopic investigations of the binding interaction between polyethylene microplastics and human hemoglobin
    S Ghosal, S Bag, MD Burman, S Bhowmik
    The Journal of Physical Chemistry Letters 14 (46), 10328-10332 , 2023
    2023
    Citations: 16
  • Fluorescence spectroscopy: A useful method to explore the interactions of small molecule ligands with DNA structures
    S Bag, S Bhowmik
    Reverse Engineering of Regulatory Networks, 33-49 , 2023
    2023
    Citations: 14
  • Exploring the structural importance of the C3═ C4 double bond in plant alkaloids harmine and harmaline on their binding interactions with hemoglobin
    MD Burman, S Bag, S Ghosal, S Karmakar, G Pramanik, RK Chinnadurai, ...
    ACS omega 8 (40), 37054-37064 , 2023
    2023
    Citations: 13
  • Glycation of proteins and its end products: from initiation to natural product-based therapeutic preventions
    MD Burman, S Bag, S Ghosal, S Bhowmik
    ACS Pharmacology & Translational Science 8 (3), 636-653 , 2025
    2025
    Citations: 12
  • Revealing the improved binding interaction of plant alkaloid harmaline with human hemoglobin in molecular crowding condition
    MD Burman, S Bag, S Ghosal, M Mukherjee, G Pramanik, S Bhowmik
    ACS omega 9 (19), 21668-21679 , 2024
    2024
    Citations: 8
  • Microplastics can alter structural configurations of human non-canonical G-quadruplex DNA
    S Bag, S Ghosal, S Bhowmik
    Environmental Toxicology and Pharmacology 114, 104626 , 2025
    2025
    Citations: 7
  • Decoding the Potential of HRAS2 i‐Motif DNA Promoter to Become a Pinpoint Target by Phytomedicine Naringenin
    S Bag, S Ghosal, S Bhowmik
    ChemistrySelect 10 (1), e202404775 , 2025
    2025
    Citations: 4
  • Investigating the preferential interaction between imatinib mesylate and VEGF G-quadruplex DNA as therapeutic strategies for cancer treatment: Biophysical and molecular …
    S Ghosal, S Bag, RK Chinnadurai, M Mukherjee, G Pramanik, S Bhowmik
    Computers in Biology and Medicine 177, 108683 , 2024
    2024
    Citations: 4
  • Structural Diversity and Mechanistic Insights on Preferential Interaction of Small Molecule Ligands with i‐Motif DNA Structures: Unlocking New Blueprint for Drug Discovery
    S Bag, S Ghosal, MD Burman, A Manna, S Bhowmik
    ChemistrySelect 10 (24), e01985 , 2025
    2025
    Citations: 3
  • Exploring i-Motif DNA binding with benzothiazolino Coumarins: Synthesis, Screening, and spectroscopic insights
    S Bag, K Chand, MD Burman, S Vertueux, E Chorell, S Bhowmik
    Bioorganic chemistry 156, 108227 , 2025
    2025
    Citations: 3

RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)

Research Publications in Highly reputed peer-reviewed Journals.

Industry, Institute, or Organisation Collaboration

1. The Foundation for Medical Research
Dr. Kantilal J Sheth Memorial Building, 84-A, Dr RG Thadani Marg, Siddharth Nagar, Worli, Mumbai, Maharashtra 400018
2. Mahatma Gandhi Medical Advanced Research Institute (MGMARI)
Sri Balaji Vidyapeeth (Deemed to be University), SBV Campus Pillaiyarkuppam Pondicherry - 607 402. India
3. UGC-DAE Consortium for Scientific Research
Kolkata Centre
Sector III, LB-8, Bidhan Nagar, Kolkata 700 106.
UGC-DAE Consortium for Scientific Research is an autonomous institute of the University Grants Commission (UGC), India
4. Department of Chemistry, Jadavpur University, Kolkata 700 032, INDIA.

STARTUP

I-motif (IM) DNA structures represents among the most significant non-canonical nucleic acid configurations. IM forming DNA sequences are found in an array of vital genomic locations and are particularly frequent in the promoter islands of various oncogenes. Thus, IM DNA is a crucial candidate for anticancer medicines, therefore binding interactions between IM DNA and small molecular ligands such as flavonoids are critically important. Flavonoids therefore emerged as a suitable natural product-oriented antagonist for targeting IM DNA. The innovative spectroscopic as well as mechanical features of flavonoids and its specific affinity for selective IM may be useful for therapeutic applications and provide crucial insights for the design of compounds with remarkable medicinal properties. Flavonoids' pioneering unique features might be used in theranostics applications and drug development. The results we have found are very promising and for future drug designing flavonoid may be used as a base molecule by some modifications/appropriate tuning in their structure. Quercetin is also a very promising molecule that may be used in ligand-based drug development, which begins with a single ligand known to be powerful against a target. Effectiveness and other critical qualities are enhanced by developing relevant analogues based on structure-activity relationships.

SOCIAL, ECONOMIC, or ACADEMIC BENEFITS

1. Honorary Scientific member of American Chemical Society (ACS), USA, 2024 [ACS Membership ID:-33476729].
2. Honorary Scientific member of Royal Society of Chemistry (RSC), UK, 2024 [RSC Membership ID:-767611].
3. Prestigious Fellow of Scholars Academic and Scientific Society (FSASS), SAS Society, An International Society for Academic & Scientific Integration, with Membership ID-SAS/FSASS/748/2024; 2nd September, 2024; .
4. Dignitary Royal Fellow awarded “FRIOASD” by International Organization for Academic and Scientific Development.
5. Academic Peer Reviewer in the Scientific Reports (Nature), Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Computers in Biology and Medicine Journal, Elsevier, ScienceDirect (Impact ISSN: 0010-4825) [Reviewing 11 Research Articles].
6. Associate Editor in Frontiers in Biophysics.