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DR. SHAILAJA SOPORY, Ph.D.  

Scientist E
+91-129-2876345  (+91-129-2876345)
ssopory [at] thsti [dot] res [dot] in
Ph.D, Indian Institute of Science, Bangalore, KA
M.S. Biological Sciences, Indian Institute of Science, Bangalore, KA
B.Sc.(H) Biochemistry, Daulat Ram College, Delhi University


My area of research is around neonatal immune system development and the role of infection/inflammation in maternal and child health. The research programs are summarized below:

Investigating the differences in immune system development in small for gestational age (SGA) neonates

A cross-sectional study was started to look at the immunophenotype of infants born SGA, to look at cellular parameters that could explain the high rates of neonatal mortality and morbidity seen in these infants. To address this issue, immunophenotyping was carried out to look at 22 different leukocyte subsets from cord blood of SGA and Appropriate for Gestational Age (AGA) infants. Differences in cell numbers and frequencies detected were mostly seen in the innate like adaptive cells, and were suggestive of immune system dysregulation rather than retarded immune system development. This cross sectional study was followed up by a cohort study (funded by DBT), where, in addition to immunophenotyping, functional characterization of the immune cells  (monocytes, B cells and T cells) was carried out and the infants were followed up for 6 weeks to look at clinical consequences of being born small. This sample collection has been completed and data acquisition and analysis is in progress.

 

Biological mechanisms for clinical effects of Zn supplementation in infants less than 2 months of age with severe infection (funded by SERB). [This study is embedded in a zinc supplementation trial funded by the Research Council of Norway, Centre for Intervention Sciences in Maternal & Child Health, Norway.]

Zinc supplementation is known to be effective in treatment/management of diarrhoea and sepsis, but has shown mixed results for acute lower respiratory tract infections. It is still not clear if the effect of zinc is through correction of Zn deficiency or direct immunomodulation and whether the effects differ depending on the etiology of infection (broadly, viral vs. bacterial). To address this problem, we have been looking at the immune cell signatures, and intracellular Zn levels at enrolment and post zinc supplementation in a subset of patients enrolled in the trial, to correlate these signatures with clinical outcomes. Moreover, as a large number of neonates with sepsis turn out to be culture negative, high throughput sequencing will be used to look at the etiology of sepsis and correlate the same with success of zinc supplementation. Whole blood gene expression studies will help distinguish bacterial and viral etiologies depending on the host gene expression pattern. The gene expression profiles at enrolment will also be used to diagnose and predict the outcome of sepsis.

 

Effect of infections and inflammation during pregnancy on adverse pregnancy outcomes, specifically preterm birth (PTB) and fetal growth restriction (FGR)

In an ongoing cohort, pregnant women are being followed up from early first trimester till delivery for risk stratification of PTB. By generating multidimensional clinical and biological data we are identifying temporal associations between the maternal inflammatory status in pregnancy to PTB and FGR. Data on reported infections during pregnancy is being recorded and we will be measuring markers of inflammation across all 3 trimesters in a normal pregnancy and also in those that lead to FGR and PTB to use a subset of serum cytokines as biomarkers to predict the risk of PTB and FGR.

1.    Bhavya Khullar, Renu Balyan, Neelam Oswal, Nidhi Jain, Amita Sharma, Malik Z. Abdin, Arvind Bagga, Shinjini Bhatnagar, Nitya Wadhwa, Uma Chandra Mouli Natchu, Anna George, Satyajit Rath, Vineeta Bal, Shailaja Sopory. Interaction of CD80 with Neph1: A potential mechanism of podocyte injury. (2017) Clinical and Experimental Nephrology. 2017 Oct 11. doi: 10.1007/s10157-017-1489-3. [Epub ahead of print]

2.    Prabhu SB, Rathore DK, Nair D, Chaudhary A, Raza S, Kanodia P, Sopory S, George A, Rath S, Bal V, Tripathi R, Ramji S, Batra A, Aggarwal KC, Chellani HK, Arya S, Agarwal N, Mehta U, Natchu UC, Wadhwa N, Bhatnagar S. Comparison of Human Neonatal and Adult Blood Leukocyte Subset Composition Phenotypes. PLoS One. 2016 Sep 9;11(9):e0162242.

3.    Jain N, Khullar B, Oswal N, Banoth B, Joshi P, Ravindran B, Panda S, Basak S, George A, Rath S, Bal V, Sopory S. TLR-mediated albuminuria needs TNFα-mediated co-operativity between TLRs present in hematopoietic tissues and CD80 present on non-hematopoietic tissues. Dis Model Mech. 2016 Jun 1; 9(6):707-17. doi: 10.1242/dmm.023440. Epub 2016 Apr 28

4.    Neugebauer JM, Kwon S, Kim HS, Donley N, Tilak A, Sopory S, Christian JL. The prodomain of BMP4 is necessary and sufficient to generate stable BMP4/7 heterodimers with enhanced bioactivity in vivo. Proc Natl Acad Sci U S A. 2015 May 5; 112 (18):E2307-16. [Epub 2015 April 20]

5.    Rathore DK, Nair D, Raza S, Saini S, Singh R, Kumar A, Tripathi R, Ramji S, Batra A, Aggarwal KC, Chellani HK, Arya S, Bhatla N, Paul VK, Aggarwal R, Agarwal N, Mehta U, Sopory S, Natchu UC, Bhatnagar S, Bal V, Rath S, Wadhwa N. Underweight full-term Indian neonates show differences in umbilical cord blood leukocyte phenotype: a cross-sectional study. PLoS One. 2015 Apr 21;10(4):e0123589. doi: 10.1371 /journal .pone.0123589. eCollection 2015.

6.    Sinha A, Bajpai J, Saini S, Bhatia D, Gupta A, Puraswani M, Dinda AK, Agarwal SK, Sopory S, Pandey RM, Hari P, Bagga A. Serum-soluble urokinase receptor levels do not distinguish focal segmental glomerulosclerosis from other causes of nephrotic syndrome in children. Kidney Int. 2014 Mar;85(3):649-58. doi: 10.1038/ki.2013.546. Epub 2014 Jan 15.

7.    Sopory, S., Kwon, S., Wehrli, M., Christian, J.L. Regulation of Decapentaplegic activity and signaling range by tissue-specific cleavage of an upstream site within the prodomain. Developmental Biology (2010) 346: 102-112.

8.    Biswas,  K. H., Sopory, S., Visweswariah, S.S..The GAF domain of the cGMP-binding, cGMP-specific phosphodiesterase (PDE5) is a sensor and a sink for cGMP. Biochemistry. 2008 Mar 18;47(11):3534-43.

9.    Goldman, D.C., Hackenmiller, R., Nakayama, T., Sopory, S., Wong, C., Kulessa, H., Christian, J.L. Mutation of an upstream cleavage site in the BMP4 prodomain leads to tissue-specific loss of activity. Development  (2006) 133(10):1933-42.  

10.    Sopory, S., Nelsen, S.M., Degnin, C.R., Wong, C.R., Christian, J.L.
Regulation of Bone Morphogenetic Protein-4 Activity by Sequence Elements within the Prodomain. Journal of  Biological Chemistry (2006) 281(45):34021-31.

11.    Sopory, S., Kaur, T. and Visweswariah, S.S. The cGMP-binding, cGMP-specific phosphodiesterase (PDE5): intestinal cell expression, regulation and role in fluid secretion. Cellular Signaling (2004) 16 (6):681-692.

12.    Sopory, S., Balaji, S., Srinivasan, N. and Visweswariah, S.S. Modeling and mutational analysis of the GAF domain of the cGMP-binding, cGMP-specific phosphodiesterase, PDE5. FEBS Letters (2003) 539 (1-2) 161-166. 

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