Santanu Chattopadhyay

Kerala, India


Dr. Santanu Chattopadhyay received his PhD in 2005 in Microbiology from National Institute of Cholera and Enteric Diseases, Kolkata, India under the guidance of Dr. G. Balakrish Nair. For postdoctoral training he went to USA to study Virology. He is currently a scientist (GN Ramachandran Fellow at the level of Scientist E1) at Rajiv Gandhi Centre for Biotechnology, Trivandrum, India. He has published several peer reviewed articles related to bacteriology (particularly on H. pylori) and virology (negative sense RNA viruses like vesicular stomatitis virus and human parainfluenza virus type 3) and book chapters.


Area of Interest

His present research interest is to analyze human microbiome and virome in relation to various diseases and nutritional status.

top publication

1. Chattopadhyay S*, Mukhopadhyay AK, Nair GB. The VacA and TheCagA of Helicobacter Pylori: Two Multitasking Proteins of a Multitasking Bacterium. (2015) J GastrointestDisord Liver Func 1(1): 1- 6. 2. Patra R, Chattopadhyay S, De R, Ghosh P, Ganguly M, Chowdhury A, Ramamurthy T, Nair GB, Mukhopadhyay AK. Multiple infection and microdiversity among Helicobacter pylori isolates in a single host in India. PLoS One. 2012;7(8):e43370. 3. Chattopadhyay S, Patra R, Chatterjee R, De R, Alam J, Ramamurthy T, Chowdhury A, Nair GB, Berg DE, Mukhopadhyay AK. Distinct repeat motifs at the C-terminal region of CagA of Helicobacter pylori strains isolated from diseased patients and asymptomatic individuals in West Bengal, India. Gut Pathog. 2012. 25;4(1):4. 4. Chattopadhyay S, Esper F, Banerjee, A. K. Respirovirus. Springer Index of Viruses.Tidona C and Darai G (Eds.) 2nd ed. Springer. Heidelberg. Germany. 2011. 243. 5. Chattopadhyay S, Esper F, Banerjee AK. Parainfluenza viruses. In The Biology of Paramyxoviruses. Samal SK (Eds). Caister Academic Press, Norfolk, UK. Page 175-209. 6. Patra R, Chattopadhyay S, De R, Datta S, Chowdhury A, Ramamurthy T, Nair GB, Berg DE, Mukhopadhyay AK. Intact cag pathogenicity island of Helicobacter pylori without disease association in Kolkata, India. Int J Med Microbiol. 2011 Apr;301(4):293-302. 7. Mao H, Chattopadhyay S, Banerjee AK.Domain within the C protein of human parainfluenza virus type 3 that regulates interferon signaling. Gene Expr. 2010;15(1):43-50. 8. Sarkar A*, Chattopadhyay S*, Ming Luo and Amiya K. Banerjee. Structural and functional properties of the vesicular stomatitis virus nucleoprotein-RNA complex as revealed by proteolytic digestion. Virology. 2010. 401: 61-69. 9. Mao H, Chattopadhyay S, Banerjee AK. N-terminally truncated C protein, CNDelta25, of human parainfluenza virus type 3 is a potent inhibitor of viral replication. Virology. 2009. 10;394(1):143-8. 10. Chattopadhyay S, Banerjee AK. Phosphoprotein, P of human parainfluenza virus type 3 prevents self-association of RNA-dependent RNA polymerase, L. Virology. 2009. 383:226-236. 11. Saha DR, Datta S, Chattopadhyay S, Patra R, De R, Rajendran K, Chowdhury A, Ramamurthy T, Mukhopadhyay AK. Indistinguishable cellular changes in gastric mucosa between Helicobacter pylori infected asymptomatic tribal and duodenal ulcer patients. World J Gastroenterol. 2009. 15(9):1105-12. 12. Mao H, Thakur CS, Chattopadhyay S, Silverman RH, Gudkov A, Banerjee AK. Inhibition of human parainfluenza virus type 3 infection by novel small molecules. Antiviral Res. 2008. 77(2):83-94. 13. Malur AG, Chattopadhyay S, Maitra RK, Banerjee AK. Inhibition of STAT 1 phosphorylation by human parainfluenza virus type 3 C protein. J Virol. 2005. 79(12):7877-7882. 14. Datta S, Chattopadhyay S, Chowdhury A, Santra A, Saha DR, Ramamurthy T, Bhattacharya SK, Berg DE, Nair GB, Mukhopadhyay AK. Diagnosis and genotyping of Helicobacter pylori by polymerase chain reaction of bacterial DNA from gastric juice. J GastroenterolHepatol. 2005. 20(8):1253-1259. 15. Datta S, Chattopadhyay S, Patra R, De R, Ramamurthy T, Hembram J, Chowdhury A, Bhattacharya SK, Berg DE, Nair GB, Mukhopadhyay AK. Most Helicobacter pylori strains of Kolkata in India are resistant to metronidazole but susceptible to other drugs commonly used for eradication and ulcer therapy. Aliment PharmacolTher. 2005. 22(1):51-57. 16. Nahar S, Mukhopadhyay AK, Khan R, Ahmad MM, Datta S, Chattopadhyay S, Dhar SC, Sarker SA, Engstrand L, Berg DE, Nair GB, Rahman M. Antimicrobial susceptibility of Helicobacter pylori strains isolated in Bangladesh. J ClinMicrobiol. 2004. 42(10):4856-4858. 17. Chattopadhyay S, Patra R, Ramamurthy T, Chowdhury A, Santra A, Dhali GK, Bhattacharya SK, Berg DE, Nair GB, Mukhopadhyay AK. Multiplex PCR assay for rapid detection and genotyping of Helicobacter pylori directly from biopsy specimens. J ClinMicrobiol. 2004. 42(6):2821-2824. 18. Pandey M, Khan A, Das SC, Sarkar B, Kahali S, Chakraborty S, Chattopadhyay S, Yamasaki S, Takeda Y, Nair GB, Ramamurthy T. Association of cytolethal distending toxin locus cdtB with enteropathogenic Escherichia coli isolated from patients with acute diarrhea in Calcutta, India. J ClinMicrobiol. 2003. 41:5277-5281. 19. Datta S, Chattopadhyay S, Balakrish Nair G, Mukhopadhyay AK, Hembram J, Berg DE, Rani Saha D, Khan A, Santra A, Bhattacharya SK, Chowdhury A. Virulence genes and neutral DNA markers of Helicobacter pylori isolates from different ethnic communities of West Bengal, India. J ClinMicrobiol. 2003. 41(8):3737-3743. 20. Datta S, Khan A, Nandy RK, Rehman M, Sinha S, Chattopadhyay S, Das SC, Nair GB. Environmental isolates of Aeromonas spp. harboring the cagA-like gene of Helicobacter pylori. Appl Environ Microbiol. 2003. 69(7):4291-4295. 21. Chaudhuri S, Chowdhury A, Datta S, Mukhopadhyay AK, Chattopadhyay S, Saha DR, Dhali G, Santra A, Nair GB, Bhattacharya S, Berg DE. Anti-Helicobacter pylori therapy in India: differences in eradication efficiency associated with particular alleles of vacuolatingcytotoxin (vacA) gene. J GastroenterolHepatol. 2003. 18(2):190-195. 22. Bhattacharyya A, Pathak S, Datta S, Chattopadhyay S, Basu J, Kundu M. Mitogen-activated protein kinases and nuclear factor-kappaB regulate Helicobacter pylori-mediated interleukin-8 release from macrophages. Biochem J. 2002. 368(Pt 1):121-129. 23. Chattopadhyay S, Datta S, Chowdhury A, Chowdhury S, Mukhopadhyay AK, Rajendran K, Bhattacharya SK, Berg DE, Nair GB. Virulence genes in Helicobacter pylori strains from West Bengal residents with overt H. pylori-associated disease and healthy volunteers. J ClinMicrobiol. 2002. 40(7):2622-2625. 24. Datta S, Kurazono H, Chattopadhyay S, Chowdhury A, Chaudhuri, S. Estimation of vacuolatingcytotoxin secreted by different strains of Helicobacter pylori using bead enzyme-linked immunosorbent assay & its correlation with bacterial genotype. Indian J Med Res. 2001. 114:192-198.