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Mukherjee S, Chakraborty S, Basak U, Pati S, Dutta A, Dutta S, Roy D, Banerjee S, Ray A, Sa G, Das T. Breast cancer stem cells generate immune-suppressive T regulatory cells by secreting TGFβ to evade immune-elimination. Discov Oncol 2023; 14:220. [PMID: 38038865 PMCID: PMC10692020 DOI: 10.1007/s12672-023-00787-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 09/06/2023] [Indexed: 12/02/2023] Open
Abstract
Cancer stem cells (CSCs), being the primary contributors in tumor initiation, metastasis, and relapse, ought to have seminal roles in evasion of immune surveillance. Tumor-promoting CD4+CD25+FOXP3+ T-regulatory cells (Tregs) have been described to abolish host defense mechanisms by impeding the activities of other immune cells including effector T cells. However, whether CSCs can convert effector T cells to immune-suppressive Treg subset, and if yes, the mechanism underlying CSC-induced Treg generation, are limitedly studied. In this regard, we observed a positive correlation between breast CSC and Treg signature markers in both in-silico and immunohistochemical analyses. Mirroring the conditions during tumor initiation, low number of CSCs could successfully generate CD4+CD25+FOXP3+ Treg cells from infiltrating CD4+ T lymphocytes in a contact-independent manner. Suppressing the proliferation potential as well as IFNγ production capacity of effector T cells, these Treg cells might be inhibiting antitumor immunity, thereby hindering immune-elimination of CSCs during tumor initiation. Furthermore, unlike non-stem cancer cells (NSCCs), CSCs escaped doxorubicin-induced apoptosis, thus constituting major surviving population after three rounds of chemotherapy. These drug-survived CSCs were also able to generate CD4+CD25+FOXP3+ Treg cells. Our search for the underlying mechanism further unveiled the role of CSC-shed immune-suppressive cytokine TGFβ, which was further increased by chemotherapy, in generating tumor Treg cells. In conclusion, during initiation as well as after chemotherapy, when NSCCs are not present in the tumor microenvironment, CSCs, albeit present in low numbers, generate immunosuppressive CD4+CD25+FOXP3+ Treg cells in a contact-independent manner by shedding high levels of immune-suppressive Treg-polarizing cytokine TGFβ, thus escaping immune-elimination and initiating the tumor or causing tumor relapse.
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Affiliation(s)
- Sumon Mukherjee
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Sourio Chakraborty
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Udit Basak
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Subhadip Pati
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Apratim Dutta
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Saikat Dutta
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Dia Roy
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Shruti Banerjee
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Arpan Ray
- Department of Pathology, ESI-PGIMSR, Medical College Hospital and ODC (EZ), Kolkata, India
| | - Gaurisankar Sa
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India
| | - Tanya Das
- Division of Molecular Medicine, Bose Institute, P-1/12, Calcutta Improvement Trust Scheme VII M, Kolkata, 700054, India.
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Basak U, Sarkar T, Mukherjee S, Chakraborty S, Dutta A, Dutta S, Nayak D, Kaushik S, Das T, Sa G. Tumor-associated macrophages: an effective player of the tumor microenvironment. Front Immunol 2023; 14:1295257. [PMID: 38035101 PMCID: PMC10687432 DOI: 10.3389/fimmu.2023.1295257] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 10/23/2023] [Indexed: 12/02/2023] Open
Abstract
Cancer progression is primarily caused by interactions between transformed cells and the components of the tumor microenvironment (TME). TAMs (tumor-associated macrophages) make up the majority of the invading immune components, which are further categorized as anti-tumor M1 and pro-tumor M2 subtypes. While M1 is known to have anti-cancer properties, M2 is recognized to extend a protective role to the tumor. As a result, the tumor manipulates the TME in such a way that it induces macrophage infiltration and M1 to M2 switching bias to secure its survival. This M2-TAM bias in the TME promotes cancer cell proliferation, neoangiogenesis, lymphangiogenesis, epithelial-to-mesenchymal transition, matrix remodeling for metastatic support, and TME manipulation to an immunosuppressive state. TAMs additionally promote the emergence of cancer stem cells (CSCs), which are known for their ability to originate, metastasize, and relapse into tumors. CSCs also help M2-TAM by revealing immune escape and survival strategies during the initiation and relapse phases. This review describes the reasons for immunotherapy failure and, thereby, devises better strategies to impair the tumor-TAM crosstalk. This study will shed light on the understudied TAM-mediated tumor progression and address the much-needed holistic approach to anti-cancer therapy, which encompasses targeting cancer cells, CSCs, and TAMs all at the same time.
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Affiliation(s)
- Udit Basak
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | - Tania Sarkar
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | - Sumon Mukherjee
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | | | - Apratim Dutta
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | - Saikat Dutta
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | - Debadatta Nayak
- Central Council for Research in Homeopathy (CCRH), New Delhi, India
| | - Subhash Kaushik
- Central Council for Research in Homeopathy (CCRH), New Delhi, India
| | - Tanya Das
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | - Gaurisankar Sa
- Division of Molecular Medicine, Bose Institute, Kolkata, India
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3
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Kim ES, Rajan A, Chang K, Govindarajan S, Gulick C, English E, Rodriguez B, Bloomfield O, Nakada S, Beard C, O’Connor S, Mastroianni S, Downey E, Feigenbaum M, Tolentino C, Pace A, Khan M, Moon S, DiPrima J, Syed A, Lin F, Abukhadra Y, Bacon I, Beckerle J, Cho S, Donkor NE, Garberg L, Harrington A, Hoang M, Lawani N, Noori A, Park E, Parsons E, Oravitan P, Chen M, Molina C, Richmond C, Reddi A, Huang J, Shugrue C, Coviello R, Unver S, Indelicarto M, Islamovic E, McIlroy R, Yang A, Hamad M, Griffin E, Ahmed Z, Alla A, Fitzgerald P, Choi A, Das T, Cheng Y, Yu J, Roderiques T, Lee E, Liu L, Harper J, Wang J, Suhr C, Tan M, Luque J, Tam AR, Chen E, Triff M, Zimmermann L, Zhang E, Wood J, Clark K, Kpodonu N, Dey A, Ecker A, Chuang M, López RKS, Sun H, Wei Z, Stone H, Chi CYJ, Silvestri A, Orloff P, Nedumaran N, Zou A, Ünver L, Page O, Kim M, Chan TYT, Tulloch A, Hernandez A, Pillai A, Chen C, Chowdhury N, Huang L, Mudide A, Paik G, Wingate A, Quinn L, Conybere C, Baumgardt LL, Buckley R, Kolberg Z, Pattison R, Shazli AA, Ganske P, Sfragara L, Strub A, Collier B, Tamana H, Ravindran D, Howden J, Stewart M, Shimizu S, Braniff J, Fong M, Gutman L, Irvine D, Malholtra S, Medina J, Park J, Yin A, Abromavage H, Barrett B, Chen J, Cho R, Dilatush M, Gaw G, Gu C, Huang J, Kilby H, Markel E, McClure K, Phillips W, Polaski B, Roselli A, Saint-Cyr S, Shin E, Tatum K, Tumpunyawat T, Wetherill L, Ptaszynska S, Zeleznik M, Pesendorfer A, Nolan A, Tao J, Sammeta D, Nicholson L, Dinh GV, Foltz M, Vo A, Ross M, Tokarski A, Hariharan S, Wang E, Baziuk M, Tay A, Wong YHM, Floyd J, Cui A, Pierre K, Coppisetti N, Kutam M, Khurjekar D, Gadzi A, Gubbay B, Pedretti S, Belovich S, Yeung T, Fey M, Shaffer L, Li A, Beritela G, Huyghue K, Foster G, Durso-Finley G, Thierfelder Q, Kiernan H, Lenkowsky A, Thomas T, Cheng N, Chao O, L’Etoile-Goga P, King A, McKinley P, Read N, Milberg D, Lin L, Wong M, Gilman I, Brown S, Chen L, Kosai J, Verbinsky M, Belshaw-Hood A, Lee H, Zhou C, Lobo M, Tse A, Tran K, Lewis K, Sonawane P, Ngo J, Zuzga S, Chow L, Huynh V, Yang W, Lim S, Stites B, Chang S, Cruz-Balleza R, Pelta M, Kujawski S, Yuan C, Standen-Bloom E, Witt O, Anders K, Duane A, Huynh N, Lester B, Fung-Lee S, Fung M, Situ M, Canigiula P, Dijkgraaf M, Romero W, Baula SK, Wong K, Xu I, Martinez B, Nuygen R, Norris L, Nijensohn N, Altman N, Maajid E, Burkhardt O, Chanda J, Doscher C, Gopal A, Good A, Good J, Herrera N, Lanting L, Liem S, Marks A, McLaughlin E, Lee A, Mohr C, Patton E, Pyarali N, Oczon C, Richards D, Good N, Goss S, Khan A, Madonia R, Mitchell V, Sun N, Vranka T, Garcia D, Arroyo F, Morales E, Camey S, Cano G, Bernabe A, Arroyo J, Lopez Y, Gonzalez E, Zumba B, Garcia J, Vargas E, Trinidad A, Candelaria N, Valdez V, Campuzano F, Pereznegron E, Medrano J, Gutierrez J, Gutierrez E, Abrego ET, Gutierrez D, Ortiz C, Barnes A, Arms E, Mitchell L, Balanzá C, Bradford J, Detroy H, Ferguson D, Guillermo E, Manapragada A, Nanula D, Serna B, Singh K, Sramaty E, Wells B, Wiggins M, Dowling M, Schmadeke G, Cafferky S, Good S, Reese M, Fleig M, Gannett A, Cain C, Lee M, Oberto P, Rinehart J, Pan E, Mathis SA, Joiner J, Barr L, Evans CJ, Baena-Lopez A, Beatty A, Collette J, Smullen R, Suttie J, Chisholm T, Rotondo C, Lewis G, Turner V, Stark L, Fox E, Amirapu A, Park S, Lantz N, Rankin AE, Kim SK, Kockel L. Generation of LexA enhancer-trap lines in Drosophila by an international scholastic network. G3 (Bethesda) 2023; 13:jkad124. [PMID: 37279923 PMCID: PMC10468311 DOI: 10.1093/g3journal/jkad124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 05/05/2023] [Accepted: 05/10/2023] [Indexed: 06/08/2023]
Abstract
Conditional gene regulation in Drosophila through binary expression systems like the LexA-LexAop system provides a superb tool for investigating gene and tissue function. To increase the availability of defined LexA enhancer trap insertions, we present molecular, genetic, and tissue expression studies of 301 novel Stan-X LexA enhancer traps derived from mobilization of the index SX4 line. This includes insertions into distinct loci on the X, II, and III chromosomes that were not previously associated with enhancer traps or targeted LexA constructs, an insertion into ptc, and seventeen insertions into natural transposons. A subset of enhancer traps was expressed in CNS neurons known to produce and secrete insulin, an essential regulator of growth, development, and metabolism. Fly lines described here were generated and characterized through studies by students and teachers in an international network of genetics classes at public, independent high schools, and universities serving a diversity of students, including those underrepresented in science. Thus, a unique partnership between secondary schools and university-based programs has produced and characterized novel resources in Drosophila, establishing instructional paradigms devoted to unscripted experimental science.
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Affiliation(s)
- Ella S Kim
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Arjun Rajan
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Kathleen Chang
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | | | | | - Eva English
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | | | - Sarah O’Connor
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | | | - Emma Downey
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | | | | | - Abigail Pace
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | - Marina Khan
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | - Soyoun Moon
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | - Jordan DiPrima
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | - Amber Syed
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | - Flora Lin
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | | | | | | | - Sophia Cho
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | - Mai Hoang
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Nosa Lawani
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Ayush Noori
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Euwie Park
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | | | | | - Adith Reddi
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Jason Huang
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | - Selma Unver
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | - Alana Yang
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Mahdi Hamad
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | - Zara Ahmed
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Asha Alla
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | - Audrey Choi
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Tanya Das
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | - Joshua Yu
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | - Ethan Lee
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | - Jason Wang
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Chris Suhr
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Max Tan
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | - Emma Chen
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Max Triff
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | - Eric Zhang
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Jackie Wood
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | - Nat Kpodonu
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Antar Dey
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | - Harry Sun
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Zijing Wei
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Henry Stone
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | | | | | - Leyla Ünver
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Oscair Page
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | - Minseo Kim
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | | | | | | | - Lina Huang
- Phillips Exeter Academy, Exeter, NH 03833, USA
| | | | | | | | - Lily Quinn
- Haileybury School, Hertford SG13 7NU, UK
| | | | | | | | | | | | | | - Pia Ganske
- Haileybury School, Hertford SG13 7NU, UK
| | | | | | | | | | | | | | | | | | - Julia Braniff
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Melanie Fong
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Lucy Gutman
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Danny Irvine
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Sahil Malholtra
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Jillian Medina
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - John Park
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Alicia Yin
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | | | - Breanna Barrett
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Jacqueline Chen
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Rachelle Cho
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Mac Dilatush
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Gabriel Gaw
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Caitlin Gu
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Jupiter Huang
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Houston Kilby
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Ethan Markel
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Katie McClure
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - William Phillips
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Benjamin Polaski
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Amelia Roselli
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Soleil Saint-Cyr
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Ellie Shin
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Kylan Tatum
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Tai Tumpunyawat
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Lucia Wetherill
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Sara Ptaszynska
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Maddie Zeleznik
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | | | - Anna Nolan
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Jeffrey Tao
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Divya Sammeta
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Laney Nicholson
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Giao Vu Dinh
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Merrin Foltz
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - An Vo
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Maggie Ross
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Andrew Tokarski
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Samika Hariharan
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Elaine Wang
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Martha Baziuk
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Ashley Tay
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | | | - Jax Floyd
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Aileen Cui
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Kieran Pierre
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Nikita Coppisetti
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Matthew Kutam
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Dhruv Khurjekar
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Anthony Gadzi
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Ben Gubbay
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Sophia Pedretti
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Sofiya Belovich
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Tiffany Yeung
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Mercy Fey
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Layla Shaffer
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Arthur Li
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | | | - Kyle Huyghue
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Greg Foster
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | | | - Quinn Thierfelder
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Holly Kiernan
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Andrew Lenkowsky
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Tesia Thomas
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Nicole Cheng
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Olivia Chao
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Pia L’Etoile-Goga
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Alexa King
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Paris McKinley
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Nicole Read
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - David Milberg
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Leila Lin
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Melinda Wong
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Io Gilman
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Samantha Brown
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Lila Chen
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Jordyn Kosai
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Mark Verbinsky
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | | | - Honon Lee
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Cathy Zhou
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Maya Lobo
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Asia Tse
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Kyle Tran
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Kira Lewis
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Pratmesh Sonawane
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Jonathan Ngo
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Sophia Zuzga
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Lillian Chow
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Vianne Huynh
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Wenyi Yang
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Samantha Lim
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Brandon Stites
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Shannon Chang
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | | | - Michaela Pelta
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Stella Kujawski
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Christopher Yuan
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | | | - Oliver Witt
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Karina Anders
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Audrey Duane
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Nancy Huynh
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Benjamin Lester
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Samantha Fung-Lee
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Melanie Fung
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Mandy Situ
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Paolo Canigiula
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Matijs Dijkgraaf
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Wilbert Romero
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | | | - Kimberly Wong
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Ivana Xu
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | | | - Reena Nuygen
- Latin School of Chicago, 59 W North Blvd, Chicago, IL 60610, USA
| | - Lucy Norris
- Latin School of Chicago, 59 W North Blvd, Chicago, IL 60610, USA
| | - Noah Nijensohn
- Latin School of Chicago, 59 W North Blvd, Chicago, IL 60610, USA
| | - Naomi Altman
- Latin School of Chicago, 59 W North Blvd, Chicago, IL 60610, USA
| | - Elise Maajid
- Latin School of Chicago, 59 W North Blvd, Chicago, IL 60610, USA
| | | | | | | | - Alex Gopal
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | - Aaron Good
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | - Jonah Good
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | | | | | - Sophia Liem
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | - Anila Marks
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | | | - Audrey Lee
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | - Collin Mohr
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | - Emma Patton
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | | | | | | | - Nathan Good
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | | | - Adeeb Khan
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | | | | | - Natasha Sun
- Albuquerque Academy, Albuquerque, NM 87109, USA
| | | | | | | | | | | | | | | | | | | | | | - Bryan Zumba
- Pritzker College Prep, Chicago, IL 60639, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jake Bradford
- Loyola Marymount University, Los Angeles, CA 90045, USA
| | | | | | | | | | | | | | - Khushi Singh
- Loyola Marymount University, Los Angeles, CA 90045, USA
| | - Emily Sramaty
- Loyola Marymount University, Los Angeles, CA 90045, USA
| | - Brian Wells
- Loyola Marymount University, Los Angeles, CA 90045, USA
| | | | - Melissa Dowling
- Latin School of Chicago, 59 W North Blvd, Chicago, IL 60610, USA
| | | | | | | | | | | | | | - Cory Cain
- Pritzker College Prep, Chicago, IL 60639, USA
| | - Melody Lee
- Harvard-Westlake School, Los Angeles, CA 90077, USA
| | | | | | | | | | | | - Leslie Barr
- Westtown School, West Chester, PA 19382, USA
| | - Cory J Evans
- Loyola Marymount University, Los Angeles, CA 90045, USA
| | | | - Andrea Beatty
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | | | - Robert Smullen
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | - Jeanne Suttie
- Commack High School, 1 Scholar Ln, Commack, NY 11725, USA
| | | | | | | | | | | | - Elizabeth Fox
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | - Anjana Amirapu
- Lowell High School, 1101 Eucalyptus Dr, San Francisco, CA 94132, USA
| | - Sangbin Park
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nicole Lantz
- The Lawrenceville School, 2500 Main St, Lawrenceville, NJ 08648, USA
| | | | - Seung K Kim
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Lutz Kockel
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
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4
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Roy S, Das T, Dasgupta Ghosh B, Goh KL, Sharma K, Chang YW. From Hazardous Waste to Green Applications: Selective Surface Functionalization of Waste Cigarette Filters for High-Performance Robust Triboelectric Nanogenerators and CO 2 Adsorbents. ACS Appl Mater Interfaces 2022; 14:31973-31985. [PMID: 35792904 DOI: 10.1021/acsami.2c06463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This article reports a novel and rational approach to convert waste cigarette filters (CFs), one of the largest sources of ocean pollution, into high-performance triboelectric nanogenerators (TENGs) and efficient CO2-capturing adsorbents. CFs are plasticized cellulose acetate, which take several years to degrade. To revalorize these fibers, selective amine surface functionalization is performed (10PAL-20T-CFs). For the proof of concept, when the modified fibers are employed in a TENG, it could generate an output voltage (96.63 V) and current (9.37 μA) that are, respectively, 43 and 8 times higher than those obtained employing the pristine CFs for the nanogenerator. The proposed TENG displays an instantaneous peak power of 3.75 mW, which is higher than that of many recently reported TENGs made from cellulose materials. Moreover, the TENG displayed outstanding durability to humidity and high-performance stability when it is subjected to cyclic loading (i.e., 12,000 cycles of loading-unloading). A 9 cm2 TENG could effectively light up 100 or more colored light-emitting diodes when it is manually pressed. Finally, the modified filter fibers show an excellent CO2 adsorption capacity of 1.93 mmol/g, which is 9.2 times higher than that obtained using the pristine fibers. These results demonstrate that hazardous wastes such as CFs can be upcycled into valuable resources.
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Affiliation(s)
- Sunanda Roy
- Newcastle University in Singapore, 172A Ang Mo Kio Avenue, Singapore 567739, Singapore
- Department of Polymer & Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh 24701, India
| | - Tanya Das
- Techno India University, Sector V, Bidhannagar, Kolkata, West Bengal 700091, India
| | | | - Kheng Lim Goh
- Newcastle University in Singapore, 172A Ang Mo Kio Avenue, Singapore 567739, Singapore
| | - Kamal Sharma
- Mechanical Engineering, GLA University, Mathura, Uttar Pradesh 281406, India
| | - Young-Wook Chang
- Department of Materials and Chemical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University, Ansan, Gyeonggi 15588, South Korea
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5
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Tahir B, Reilly J, Tay J, Clinch H, Boindala N, Hughes J, Riley S, Roxby P, Tozer-Loft S, Aung T, Qureshi M, Das T, Hatton M. 146P Impact of heart, lung and oesophageal doses on overall survival (OS) of small cell lung cancer (SCLC) patients following radical chemo-radiotherapy (RT). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.02.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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6
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Das T, Banyal RK. Method for tilt correction of calibration lines in high-resolution spectra. Appl Opt 2021; 60:9906-9914. [PMID: 34807194 DOI: 10.1364/ao.434198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 10/09/2021] [Indexed: 06/13/2023]
Abstract
Technological advancement has led to improvement in the design capabilities of astronomical spectrographs, allowing for high-precision spectroscopy, thereby expanding the realms of observational astronomy. High-resolution spectrographs use echelle gratings that operate in higher orders, giving more detailed spectra. Often, curvature and tilted lines are observed in the spectra, arising due to the design trade-offs of the respective spectrographs. Removal of these artifacts can help avoid wrong flux calculation and line centroid position misinterpretation, which can aid in a better prediction of the wavelength calibration model. In this paper we present a postprocessing technique that we developed to correct the observed curvature and tilt in the spectra. We have demonstrated the correction technique on Fabry-Perot and Th-Ar calibration spectra obtained from a Hanle echelle spectrograph, a Magellan Inamori Kyocera Echelle spectrometer, and a X-Shooter spectrograph.
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7
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Mokhtar N, Lee C, Hatton M, Mok W, Das T, Fisher P, Bates E, Mathew T. P05.04 Retrospective Study on the Correlation of Central Tumour and Central Structures and the Effect on Survival for Patients Receiving Lung SABR. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Sakib Hossain DM, Panda AK, Manna A, Mohanty S, Bhattacharjee P, Bhattacharyya S, Saha T, Chakraborty S, Kar RK, Das T, Chatterjee S, Sa G. Retraction Notice to: FoxP3 Acts as a Cotranscription Factor with STAT3 in Tumor-Induced Regulatory T Cells. Immunity 2021; 54:2167. [PMID: 34525341 DOI: 10.1016/j.immuni.2021.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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DUTTA P, Das T. POS-516 ASSESSMENT OF QUALITY OF LIFE IN HEMODIALYSIS PATIENTS USING WHOQOL-BREF QUESTIONNAIRE. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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10
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Jalal M, Dutta A, Das T, Islam M. First detection of plasmid-mediated colistin-resistance gene (mcr-1, mcr-2 and mcr-3) in Escherichia coli isolated from breeder poultry of Bangladesh. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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11
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Rana E, Islam M, Das T, Dutta A, Ahad A, Biswas P, Barua H. Methicillin-resistant coagulase positive Staphylococcus aureus and Staphylococcus pseudintermedius circulating in dogs in Bangladesh. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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12
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Jadon R, Benson R, Das T, Barnett G. PD-0051: The impact of neuroradiology collaboration in head and neck cancer radiotherapy peer review. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00077-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Bhattacharya A, Mukherjee S, Khan P, Banerjee S, Dutta A, Banerjee N, Sengupta D, Basak U, Chakraborty S, Dutta A, Chattopadhyay S, Jana K, Sarkar DK, Chatterjee S, Das T. SMAR1 repression by pluripotency factors and consequent chemoresistance in breast cancer stem-like cells is reversed by aspirin. Sci Signal 2020; 13:13/654/eaay6077. [PMID: 33082288 DOI: 10.1126/scisignal.aay6077] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The high abundance of drug efflux pumps in cancer stem cells (CSCs) contributes to chemotherapy resistance. The transcriptional regulator SMAR1 suppresses CSC expansion in colorectal cancer, and increased abundance of SMAR1 is associated with better prognosis. Here, we found in breast tumors that the expression of SMAR1 was decreased in CSCs through the cooperative interaction of the pluripotency factors Oct4 and Sox2 with the histone deacetylase HDAC1. Overexpressing SMAR1 sensitized CSCs to chemotherapy through SMAR1-dependent recruitment of HDAC2 to the promoter of the gene encoding the drug efflux pump ABCG2. Treating cultured CSCs or 4T1 tumor-bearing mice with the nonsteroidal anti-inflammatory drug aspirin restored SMAR1 expression and ABCG2 repression and enhanced tumor sensitivity to doxorubicin. Our findings reveal transcriptional mechanisms regulating SMAR1 that also regulate cancer stemness and chemoresistance and suggest that, by restoring SMAR1 expression, aspirin might enhance chemotherapeutic efficacy in patients with stem-like tumors.
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Affiliation(s)
- Apoorva Bhattacharya
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Shravanti Mukherjee
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Poulami Khan
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Shruti Banerjee
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Apratim Dutta
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Nilanjan Banerjee
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Debomita Sengupta
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Udit Basak
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Sourio Chakraborty
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Abhishek Dutta
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Samit Chattopadhyay
- Department of Biological Sciences, BITS-Pilani, K K Birla Goa Campus, NH 17B, Zuarinagar, Goa-403 726, India
| | - Kuladip Jana
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Diptendra K Sarkar
- Department of Surgery, IPGMER and SSKM Hospital, Kolkata- 700 020, India
| | - Subhrangsu Chatterjee
- Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India
| | - Tanya Das
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata-700 054, India.
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Miryahyaei S, Das T, Othman M, Batstone D, Eshtiaghi N. Anaerobic co-digestion of sewage sludge with cellulose, protein, and lipids: Role of rheology and digestibility. Sci Total Environ 2020; 731:139214. [PMID: 32417486 DOI: 10.1016/j.scitotenv.2020.139214] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/24/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Rheology is known to have an impact on the performance of digesters, but the effect of additional substrates (co-digestion) is poorly understood. The main objective of this study was to investigate the effects of the addition of cellulose, protein and lipids to substrates on the rheological behaviour and biogas production of the mixture of primary sludge (PS) and waste-activated sludge (WAS) in a batch system. A mixture of PS and WAS to form the main substrate was anaerobically co-digested with different types of organic matter (cellulose, protein and lipids) as co-substrates at different co-substrate to main substrate ratios of 2-8 (wt%) under mesophilic conditions and below ammonia inhibition levels. Yield stress (τy) and the flow consistency index (k) of the combined feed in the case of cellulose and protein were significantly dependent on the amount of co-substrate added, while there was an insignificant impact on these properties when lipids were added. Cellulose significantly increased τy and k in the feed, which resulted in poor fluidity and the improper homogenisation of the digester content, and consequently decreased the biogas yield. In contrast, the biogas yield was improved through the addition of 2% to 6% protein despite an increase in τy and k of the feed, but the methane yield decreased at 7% and 8% levels of protein concentration. This observation indicates that the threshold for τy and k of the digester media depends on the organic nature and digestibility of the substrate. There was no significant impact on the flow properties of the initial mixture when lipids were added, and their addition increased the biogas yield. A first-order kinetic reaction model was used for predicting the yield of methane from these digesters. The rate constant values revealed an increasing trend, with the highest for protein then lipids then cellulose.
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Affiliation(s)
- S Miryahyaei
- Chemical and Environmental Engineering, School of Engineering, RMIT University, 3001 Melbourne, Australia
| | - T Das
- Chemical and Environmental Engineering, School of Engineering, RMIT University, 3001 Melbourne, Australia
| | - M Othman
- Chemical and Environmental Engineering, School of Engineering, RMIT University, 3001 Melbourne, Australia
| | - D Batstone
- Advanced Water Management Centre, The University of Queensland, Brisbane, Australia
| | - N Eshtiaghi
- Chemical and Environmental Engineering, School of Engineering, RMIT University, 3001 Melbourne, Australia.
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15
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Banerjee S, Mukherjee S, Bhattacharya A, Basak U, Chakraborty S, Paul S, Khan P, Jana K, Hazra TK, Das T. Pyridoxine enhances chemo-responsiveness of breast cancer stem cells via redox reconditioning. Free Radic Biol Med 2020; 152:152-165. [PMID: 32145302 DOI: 10.1016/j.freeradbiomed.2020.02.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 02/28/2020] [Indexed: 12/14/2022]
Abstract
A plethora of molecular strategies are employed by breast cancer stem cells (bCSCs) to evade chemotherapy-induced death signals, redox modulation being a crucial factor among those. Here, we observed that bCSCs are resistant to DNA damage and generate low ROS upon doxorubicin (Dox) treatment. Further exploration revealed inherently high NEIL2, a base excision repair (BER) enzyme that plays a key regulatory role in repairing DNA damage, in bCSCs. However, its role in modulating the redox status of bCSCs remains unexplored. In addition, Dox not only upregulates NEIL2 in bCSCs at both transcriptional and translational levels but also declines p300-induced acetylation thus activating NEIL2 and providing a protective effect against the stress inflicted by the genotoxic drug. However, when the redox status of bCSCs is altered by inducing high ROS, apoptosis of the resistant population is accomplished. Subsequently, when NEIL2 is suppressed in bCSCs, chemo-sensitization of the resistant population is enabled by redox reconditioning via impaired DNA repair. This signifies a possibility of therapeutically disrupting the redox balance in bCSCs to enhance their chemo-responsiveness. Our search for an inhibitor of NEIL2 revealed that vitamin B6, i.e., pyridoxine (PN), hinders NEIL2-mediated transcription-coupled repair process by not only decreasing NEIL2 expression but also inhibiting its association with RNA Pol II, thus stimulating DNA damage and triggering ROS. As a consequence of altered redox regulation, bCSCs become susceptible towards Dox, which then induces apoptosis via caspase cascade. These findings signify that PN enhances chemo-responsiveness of bCSCs via redox reconditioning.
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Affiliation(s)
- Shruti Banerjee
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Shravanti Mukherjee
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Apoorva Bhattacharya
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Udit Basak
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Sourio Chakraborty
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Swastika Paul
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Poulami Khan
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Kuladip Jana
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India
| | - Tapas K Hazra
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, 77555-1074, USA
| | - Tanya Das
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme, VIIM, Kolkata, 700054, India.
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16
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Sivaprasad S, Raman R, Conroy D, Mohan, Wittenberg R, Rajalakshmi R, Majeed A, Krishnakumar S, Prevost T, Parameswaran S, Turowski P, Maheswari U, Khobragade R, Netuveli G, Sadanandan R, Greenwood J, Ramasamy K, Rao M, Bergeles C, Das T. The ORNATE India Project: United Kingdom-India Research Collaboration to tackle visual impairment due to diabetic retinopathy. Eye (Lond) 2020; 34:1279-1286. [PMID: 32398841 DOI: 10.1038/s41433-020-0854-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/15/2020] [Accepted: 03/17/2020] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION The ORNATE India project is funded by the UK Research and Innovation (UKRI) through the Global Challenges Research Fund. The aim is to build research capacity and capability in India and the UK to tackle global burden of diabetes-related visual impairment. As there are over 77 million people with diabetes in India, it is challenging to screen every person with diabetes annually for sight-threatening diabetic retinopathy (DR). Therefore, alternate safe approaches need to be developed so that those at-risk of visual impairment due to DR is identified promptly and treated. METHODS The project team utilised diverse global health strategies and research methods to co-design work packages to build research capacity and capability to ensure effective, affordable and efficient DR services are made available for the population. The strategies and methods employed included health system strengthening; implementation science; establishing care pathways; co-designing collaborative studies on affordable technologies, developing quality standards and guidelines to decrease variations in care; economic analysis; risk modelling and stratification. Five integrated work packages have been developed to deal with all aspects of DR care. These included implementation of a DR screening programme in the public health system in a district in Kerala, evaluating regional prevalence of diabetes and DR and assessing ideal tests for holistic screening for diabetes and its complications in 20 areas in India, utilising artificial intelligence on retinal images to facilitate DR screening, exploring biomarker and biosensor research to detect people at risk of diabetes complications, estimating cost of blindness in India and risk modelling to develop risk-based screening models for diabetes and its complications. A large collaborative network will be formed to propagate research, promote shared learning and bilateral exchanges between high- and middle-income countries to tackle diabetes-related blindness.
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Affiliation(s)
- S Sivaprasad
- NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, London, UK.
| | - R Raman
- Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | - D Conroy
- UCL Institute of Ophthalmology, London, UK
| | - Mohan
- Madras Diabetes Research Foundation, Chennai, India
| | | | | | - A Majeed
- Imperial College London, London, UK
| | - S Krishnakumar
- Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | | | - S Parameswaran
- Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | - P Turowski
- UCL Institute of Ophthalmology, London, UK
| | | | | | | | | | | | - K Ramasamy
- Aravind Medical Research Foundation, Madurai, India
| | - M Rao
- Imperial College London, London, UK
| | | | - T Das
- Hyderabad Eye Research Foundation, L V Prasad Eye Institute, Hyderabad, India
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17
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Lama LD, Das T, Neupane A, Lama R, Pandey R, Karki U. Management of Quadruplet Pregnancy: A Case Report. JNMA J Nepal Med Assoc 2020. [PMID: 32335627 PMCID: PMC7654457 DOI: 10.31729/jnma.4861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Quadruplet pregnancy is a pregnancy state where four fetuses grow simultaneously inside a mother’s womb. Four fetuses developing in a womb is a challenge not only to the mother but to the obstetrician who has to calculate every risk associated with such pregnancy. High order pregnancy is considered a high risk pregnancy due to increase in maternal, fetal and neonatal morbidity and mortality. So a multidisciplinary approach with early involvement of neonatologists and anesthesiologists for the assessment of such case is essential for a successful obstetric outcome. Here we present a case report of 27 years G3P1L1A1 at 33 weeks 2 days of gestation with quadruplet pregnancy with previous lower segment Cesarian section with history of ovulation induction, delivered successfully via cesarean section with successful outcome of all 1 female and 3 male babies.
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Affiliation(s)
- Lhakpa Dolma Lama
- Department of Gynecology and Obstetrics, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, Nepal
| | - Tanya Das
- Department of Gynecology and Obstetrics, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, Nepal
| | - Asmita Neupane
- Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, Nepal
- Correspondence: Ms. Asmita Neupane, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, Nepal. , Phone: +977-9843150935
| | - Roshan Lama
- Deurali Primary Health Center, Nuwakot, Nepal
| | - Rakshya Pandey
- Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, Nepal
| | - Urmila Karki
- Department of Gynecology and Obstetrics, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, Nepal
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18
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Ghosh S, Das T. Cognitive Dysfunction in Elderly Diabetics: A Preliminary Study. J Assoc Physicians India 2020; 68:104. [PMID: 31979962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- S Ghosh
- KPC medical college and hospital,jadavpur
| | - T Das
- KPC medical college and hospital,jadavpur
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Ryan A, Bates E, Danson S, Das T, Fisher P, Hatton M, Lee C, Young R, Taylor F, Marshall R. Outcomes of patients in South Yorkshire with advanced non-small-cell lung cancer treated with second-line atezolizumab following induction with chemotherapy. Lung Cancer 2020. [DOI: 10.1016/s0169-5002(20)30153-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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John JK, Das T, Sethi M, Kattoor J, Tomar N, Saikumar G. Epidemiological study of porcine teschovirus infection in pigs at Bareilly, Uttar Pradesh, India. BIOL RHYTHM RES 2019. [DOI: 10.1080/09291016.2019.1627645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- J. K. John
- Swine Disease Laboratory, Division of Pathology, ICAR- Indian Veterinary Research Institute, Bareilly, India
| | - T. Das
- Swine Disease Laboratory, Division of Pathology, ICAR- Indian Veterinary Research Institute, Bareilly, India
| | - M. Sethi
- Swine Disease Laboratory, Division of Pathology, ICAR- Indian Veterinary Research Institute, Bareilly, India
| | - J.J. Kattoor
- Swine Disease Laboratory, Division of Pathology, ICAR- Indian Veterinary Research Institute, Bareilly, India
| | - N. Tomar
- Swine Disease Laboratory, Division of Pathology, ICAR- Indian Veterinary Research Institute, Bareilly, India
| | - G. Saikumar
- Swine Disease Laboratory, Division of Pathology, ICAR- Indian Veterinary Research Institute, Bareilly, India
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Dutta A, Sengupta D, Paul S, Chakraborty S, Mukherjee S, Das T. A new insight into tumour immune-evasion: Crosstalk between cancer stem cells and T regulatory cells. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz438.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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22
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Kumari S, Saikumar G, Desingu PA, Das T, Singh R. Immunohistochemical detection of naturally occurring porcine Sapelovirus infection in Indian pigs. J Immunoassay Immunochem 2019; 40:676-684. [PMID: 31603022 DOI: 10.1080/15321819.2019.1675695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We investigated immunohistochemical detection of porcine Sapelovirus (PSV) in naturally infected pigs of different ages. Forty-nine fecal samples, intestinal contents and other tissue samples from dead pigs were screened in previous study using reverse transcription polymerase chain reaction (RT-PCR) for PSV infection. Eight animals were positive for PSV based on RT-PCR examination. Gross lesions were recorded mainly in the large and small intestines. Microscopic examination of intestines showed severe enteritis. Tissue sections of all organs from PSV positive animals were immunostained using hyperimmune serum raised in rats against PSV that had been grown in a BHK-21 cell line. Staining of PSV was found only in the large and small intestines.
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Affiliation(s)
- Swati Kumari
- Division of Pathology, Indian Council of Agricultural Research-Indian Veterinary Research Institute, Bareilly, India
| | - G Saikumar
- Division of Pathology, Indian Council of Agricultural Research-Indian Veterinary Research Institute, Bareilly, India
| | - P A Desingu
- Division of Pathology, Indian Council of Agricultural Research-Indian Veterinary Research Institute, Bareilly, India
| | - T Das
- Division of Pathology, Indian Council of Agricultural Research-Indian Veterinary Research Institute, Bareilly, India
| | - Rahul Singh
- Division of Pathology, Indian Council of Agricultural Research-Indian Veterinary Research Institute, Bareilly, India
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Sengupta P, Bhattacharya A, Sa G, Das T, Chatterjee S. Truncated G-Quadruplex Isomers Cross-Talk with the Transcription Factors To Maintain Homeostatic Equilibria in c-MYC Transcription. Biochemistry 2019; 58:1975-1991. [PMID: 30920805 DOI: 10.1021/acs.biochem.9b00030] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The nuclease hypersensitive element III1 (NHE III1) upstream c-MYC promoter harbors a transcription-silencing G-quadruplex (Pu27) element. Dynamic turnover of various transcription factors (TFs) across Pu27 to control c-MYC transcription homeostasis is enigmatic. Here, we reveal that native Pu27 evolves truncated G-quadruplex isomers (Pu19, Pu22, Pu24, and Pu25) in cells that are optimal intracellular targets of specific TFs in a sequence- and structure-dependent manner. Nuclear magnetic resonance and isothermal titration calorimetry envisaged that NM23-H2 (nucleoside diphosphate kinase) and nucleolin induce conformational fluctuations in Pu27 to sample specific conformationally restricted conformer(s). Structural investigations revealed that the flanking guanines at 5'-Pu27 control solvent exposure at G-quartets upon NM23-H2 and nucleolin binding driving Pu27 unfolding and folding, respectively. Transient chromatin immunoprecipitations confirmed that NM23-H2 drives the conformation switch to Pu24 that outcompetes nucleolin recruitment. Similarly, nucleolin arrests Pu27 in the Pu22 conformer minimizing NM23-H2 binding at Pu27. hnRNPK (heterogeneous nuclear ribonucleoprotein K) positively regulates NM23-H2 and nucleolin association at Pu27 despite their antagonism. On the basis of these results, we simulated the transcription kinetics in a feed-forward loop in which the transcription output responds to hnRNPK-induced early activation via NM23-H2 association, which favors Pu24 formation at NHE III1 reducing nucleolin occupancy and driving quadruplex unfolding to initiate transcription. NM23-H2 further promotes hnRNPK deposition across NHE III1 altering Pu27 plasticity that finally enriches the nucleolin abundance to drive Pu22 formation and weaken NM23-H2 binding to extinguish transcription. This mechanism involves three positive feedback loops (NM23-H2-hnRNPK, NM23-H2-CNBP, and hnRNPK-nucleolin) and one negative feedback loop (NM23-H2-nucleolin) controlling optimal turnover and residence time of TFs at Pu27 to homeostatically regulate c-MYC transcription.
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Affiliation(s)
- Pallabi Sengupta
- Department of Biophysics , Bose Institute , P 1/12, C. I. T. Road, Scheme-VIIM , Kolkata 700054 , West Bengal , India
| | - Apoorva Bhattacharya
- Division of Molecular Medicine , Bose Institute , P 1/12, C. I. T. Road, Scheme-VIIM , Kolkata 700054 , West Bengal , India
| | - Gaurisankar Sa
- Division of Molecular Medicine , Bose Institute , P 1/12, C. I. T. Road, Scheme-VIIM , Kolkata 700054 , West Bengal , India
| | - Tanya Das
- Division of Molecular Medicine , Bose Institute , P 1/12, C. I. T. Road, Scheme-VIIM , Kolkata 700054 , West Bengal , India
| | - Subhrangsu Chatterjee
- Department of Biophysics , Bose Institute , P 1/12, C. I. T. Road, Scheme-VIIM , Kolkata 700054 , West Bengal , India
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Miryahyaei S, Olinga K, Abdul Muthalib FA, Das T, Ab Aziz MS, Othman M, Baudez JC, Batstone D, Eshtiaghi N. Impact of rheological properties of substrate on anaerobic digestion and digestate dewaterability: New insights through rheological and physico-chemical interaction. Water Res 2019; 150:56-67. [PMID: 30508714 DOI: 10.1016/j.watres.2018.11.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/17/2018] [Accepted: 11/17/2018] [Indexed: 06/09/2023]
Abstract
Mesophilic batch anaerobic digesters fed by different substrates were set up to identify the role of substrate rheology in anaerobic digestion performance while operating below the toxic level. Five substrates of different rheological behaviour but at the same amount of organic matters were prepared by addition of different amount of an inert material (0, 0.03, 0.07, 0.11, and 0.20 g) per g of waste activated sludge (WAS). To gain a comprehensive insight, the interactive relationship between substrate rheology, physico-chemical properties and biogas production as well as digestate dewaterability was investigated. The results proved that better access of microorganisms to organic matters improved the digester performance and led to 19.29% and 12.5% increase in biogas yield and VS removal efficiency, respectively. Moreover, the statistical analysis showed that consistency index and loss modulus of sludge could be employed as promising indications for biogas yield while yield stress could predict dewaterability of digestate as far as the other physico-chemical properties remained unchanged. During digestion measurement of consistency index and loss modulus of digestate could be performed as a reliable tool to monitor biogas production.
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Affiliation(s)
- S Miryahyaei
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Australia
| | - K Olinga
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Australia
| | - F A Abdul Muthalib
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Australia
| | - T Das
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Australia
| | - M S Ab Aziz
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Australia
| | - M Othman
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Australia
| | - J C Baudez
- Luxembourg Institute of Science and Technology, Environmental Research and Innovation Department, Belvaux, Luxembourg
| | - D Batstone
- Advanced Water Management Centre, The University of Queensland, Brisbane, Australia
| | - N Eshtiaghi
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Australia.
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Sonwani R, Giri B, Das T, Singh R, Rai B. Biodegradation of fluorene by neoteric LDPE immobilized Pseudomonas pseudoalcaligenes NRSS3 in a packed bed bioreactor and analysis of external mass transfer correlation. Process Biochem 2019. [DOI: 10.1016/j.procbio.2018.11.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Elmushraf R, Clinch H, Salawu A, Fisher P, Young R, Lee C, Danson S, Bates E, Hatton M, Low L, Das T, Taylor F. The North Trent experience of the use of first line pembrolizumab in stage IIIB/IV non-small cell lung cancer. Lung Cancer 2019. [DOI: 10.1016/s0169-5002(19)30145-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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27
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Das T, Bartschat K, Bray I, Fursa D, Zatsarinny O, Ballance C, Chung HK, Ralchenko Y. Recommended electron-impact excitation and ionization cross sections for Be I. At Data Nucl Data Tables 2019; 127-128:10.1016/j.adt.2018.11.001. [PMID: 32116394 PMCID: PMC7047829 DOI: 10.1016/j.adt.2018.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Analytic fits to the recommended electron-impact excitation and ionization cross sections for Be I are presented. The lowest 19 terms of configurations 2snl (n ≤ 4) and 2p 2 terms below the first ionization limit are considered. The fits are based on the accurate calculations with the convergent close coupling (CCC) method as well as the B-spline R-matrix (BSR) approach. The fitted cross sections provide rate coefficients that are believed to approximate the original data within 10% with very few exceptions. The oscillator strengths for the dipole-allowed transitions between all the considered states are calculated with the relativistic multi-configuration Dirac-Hartree-Fock (MCDHF) approach and compared with the CCC and BSR results. This comparison shows a very good agreement except for a handful of cases with likely strong cancellations.
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Affiliation(s)
- T. Das
- International Atomic Energy Agency, A-1400 Vienna,
Austria
| | - K. Bartschat
- Department of Physics and Astronomy, Drake University, Des
Moines, IA 50311, USA
| | - I. Bray
- Curtin Institute for Computation and Department of Physics,
Astronomy and Medical Radiation Science,Curtin University, GPO Box U1987, Perth, WA
6845, Australia
| | - D.V. Fursa
- Curtin Institute for Computation and Department of Physics,
Astronomy and Medical Radiation Science,Curtin University, GPO Box U1987, Perth, WA
6845, Australia
| | - O. Zatsarinny
- Department of Physics and Astronomy, Drake University, Des
Moines, IA 50311, USA
| | - C. Ballance
- School of Mathematics and Physics, Queen’s
University Belfast, Belfast BT7 1NN, Northern Ireland, United Kingdom
| | - H.-K. Chung
- International Atomic Energy Agency, A-1400 Vienna,
Austria
| | - Yu. Ralchenko
- National Institute of Standards and Technology,
Gaithersburg, MD 20899, USA
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28
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Robinson S, Tahir B, Absalom K, Tripathi D, Fisher P, Das T, Lee C, Bates E, Hatton M. P1.17-05 Accelerated Radiotherapy for Non-Small Cell Lung Cancer: A 12 Year Retrospective Review of Two Dose Fractionation Schedules. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Das T, Alabi I, Colley M, Yan F, Griffith W, Bach S, Weintraub ST, Renthal R. Major venom proteins of the fire ant Solenopsis invicta: insights into possible pheromone-binding function from mass spectrometric analysis. Insect Mol Biol 2018; 27:505-511. [PMID: 29656567 PMCID: PMC6188847 DOI: 10.1111/imb.12388] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Proteins in the venom of the fire ant Solenopsis invicta have been suggested to function in pheromone binding. Venom from queens and workers contains different isoforms of these proteins, consistent with the differing pheromones they secrete, but questions remain about the venom protein composition and glandular source. We found that the queen venom contains a previously uncharacterized pheromone-binding protein paralogue known as Sol i 2X1. Using imaging mass spectrometry, we located the main venom proteins in the poison sac, implying that pheromones might have to compete with venom alkaloids for binding. Using the known structure of the worker venom protein Sol i 2w, we generated three-dimensional homology models of the worker venom protein Sol i 4.02, and of the two main venom proteins in queens and female alates, Sol i 2q and Sol i 2X1. Surprisingly, the models show that the proteins have relatively small internal hydrophobic binding pockets that are blocked by about 10 amino acids of the C-terminal region. For these proteins to function as carriers of hydrophobic ligands, a conformational change would be required to displace the C-terminal region, somewhat like the mechanism known to occur in the silk moth pheromone-binding protein.
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Affiliation(s)
- T Das
- Department of Biology, University of Texas at San Antonio, San Antonio, TX, USA
| | - I Alabi
- Department of Biology, University of Texas at San Antonio, San Antonio, TX, USA
| | - M Colley
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, USA
| | - F Yan
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, USA
| | - W Griffith
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, USA
| | - S Bach
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, USA
| | - S T Weintraub
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - R Renthal
- Department of Biology, University of Texas at San Antonio, San Antonio, TX, USA
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
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Hatton M, Robinson S, Bradshaw J, Riley S, Das T, Lee C, Fisher P, Bates E, Tozer-Loft S, Tahir B. 111O Impact of cardiac doses on survival of non-small cell lung cancer (NSCLC) patients following radical accelerated radiotherapy. J Thorac Oncol 2018. [DOI: 10.1016/s1556-0864(18)30385-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Sanganalmath P, Lester JE, Bradshaw AG, Das T, Esler C, Roy AEF, Toy E, Lester JF, Button M, Wilson P, Comins C, Atherton P, Pickles R, Foweraker K, Walker GA, Keni M, Hatton MQ. Continuous Hyperfractionated Accelerated Radiotherapy (CHART) for Non-small Cell Lung Cancer (NSCLC): 7 Years' Experience From Nine UK Centres. Clin Oncol (R Coll Radiol) 2018; 30:144-150. [PMID: 29336865 DOI: 10.1016/j.clon.2017.12.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 08/27/2017] [Accepted: 11/06/2017] [Indexed: 01/15/2023]
Abstract
AIM Continuous hyperfractionated accelerated radiotherapy (CHART) remains an option to treat non-small cell lung cancer (NSCLC; NICE, 2011). We have previously published treatment outcomes from 1998-2003 across five UK centres. Here we update the UK CHART experience, reporting outcomes and toxicities for patients treated between 2003 and 2009. MATERIALS AND METHODS UK CHART centres were invited to participate in a retrospective data analysis of NSCLC patients treated with CHART from 2003 to 2009. Nine (of 14) centres were able to submit their data into a standard database. The Kaplan-Meier method estimated survival and the Log-rank test analysed the significance. RESULTS In total, 849 patients had CHART treatment, with a median age of 71 years (range 31-91), 534 (63%) were men, 55% had undergone positron emission tomography-computed tomography (PET-CT) and 26% had prior chemotherapy; 839 (99%) patients received all the prescribed treatment. The median overall survival was 22 months with 2 and 3 year survival of 47% and 32%, respectively. Statistically significant differences in survival were noted for stage IA versus IB (33.2 months versus 25 months; P = 0.032) and IIIA versus IIIB (20 months versus 16 months; P = 0.018). Response at 3 months and outcomes were significantly linked; complete response showing survival of 34 months against 19 months, 15 months and 8 months for partial response, stable and progressive disease, respectively (P < 0.001). Age, gender, performance status, prior chemotherapy and PET-CT did not affect the survival outcomes. Treatment was well tolerated with <5% reporting ≥grade 3 toxicity. CONCLUSION In routine practice, CHART results for NSCLC remain encouraging and we have been able to show an improvement in survival compared with the original trial cohort. We have confirmed that CHART remains deliverable with low toxicity rates and we are taking a dose-escalated CHART regimen forward in a randomised phase II study of sequential chemoradiotherapy against other accelerated dose-escalated schedules.
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Affiliation(s)
| | | | - A G Bradshaw
- Weston Park Hospital, Sheffield, UK; Newcastle on Tyne Hospitals NHS Trust, Freeman Hospital, Newcastle, UK
| | - T Das
- Weston Park Hospital, Sheffield, UK
| | - C Esler
- University Hospitals of Leicester NHS Trust, Leicester, UK
| | - A E F Roy
- Plymouth Hospitals NHS Trust, Plymouth, UK
| | - E Toy
- Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | | | - M Button
- Velindre Cancer Centre, Cardiff, UK
| | - P Wilson
- University Hospitals Bristol NHS Trust, Bristol, UK
| | - C Comins
- University Hospitals Bristol NHS Trust, Bristol, UK
| | - P Atherton
- Newcastle on Tyne Hospitals NHS Trust, Freeman Hospital, Newcastle, UK
| | - R Pickles
- Newcastle on Tyne Hospitals NHS Trust, Freeman Hospital, Newcastle, UK
| | - K Foweraker
- Nottingham University Hospitals NHS Trust, City Hospital, Nottingham, UK
| | - G A Walker
- Derby Hospitals NHS Trust, Royal Derby Hospital, UK
| | - M Keni
- Derby Hospitals NHS Trust, Royal Derby Hospital, UK
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Kumar D, Das T, Giri BS, Verma B. Characterization and compositional analysis of highly acidic karanja oil and its potential feedstock for enzymatic synthesis of biodiesel. NEW J CHEM 2018. [DOI: 10.1039/c8nj03084g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present study, we focused on the synthesis of biodiesel fromPseudomonas cepacia, crude karanja oil by the process of enzymatic transesterification using bio-support materials, such as lipase immobilized on polyvinyl alcohol/AlgNa.
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Affiliation(s)
- D. Kumar
- Department of Chemical Engineering & Technology
- IIT (BHU)
- Varanasi-221005
- India
| | - T. Das
- Department of Chemical Engineering & Technology
- IIT (BHU)
- Varanasi-221005
- India
| | - B. S. Giri
- Department of Chemical Engineering & Technology
- IIT (BHU)
- Varanasi-221005
- India
| | - B. Verma
- Department of Chemical Engineering & Technology
- IIT (BHU)
- Varanasi-221005
- India
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Garikipati S, Prakash A, Alhilali M, Burnett A, Lee C, Young R, Danson S, Bates E, Fisher P, Hatton M, Das T. Management and outcomes of patients with small cell lung cancer in North Trent. Lung Cancer 2018. [DOI: 10.1016/s0169-5002(18)30194-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Robinson S, Absalom K, Das T, Lee C, Fisher P, Bates E, Hatton M. Post-operative radiotherapy (PORT) for incompletely resected non-small cell lung cancer (NSCLC): single centre audit of outcomes. Lung Cancer 2018. [DOI: 10.1016/s0169-5002(18)30180-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Low L, Salawu A, Bates E, Young R, Danson S, Fisher P, Hatton M, Lee C, Das T, Taylor F. The North Trent experience of administering pembrolizumab to previously treated patients with advanced non-small cell lung cancer. Lung Cancer 2018. [DOI: 10.1016/s0169-5002(18)30110-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Robinson S, Absalom K, Lankathilake A, Das T, Lee C, Fisher P, Bates E, Hatton M. Radical radiotherapy for non-small cell lung cancer (NSCLC): real world outcomes for two accelerated fractionation schedules. Lung Cancer 2018. [DOI: 10.1016/s0169-5002(18)30189-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Bhardwwaj P, Batra S, Dhopte S, Das T. Fibroid Degeneration - Myriad Presentation and Laparoscopic Management. J Minim Invasive Gynecol 2017. [DOI: 10.1016/j.jmig.2017.08.566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Li M, Das T, Deng W, Wang Q, Li Y, Zhao L, Ma X, Wang Y, Yu H, Li X, Meng Y, Palaniyappan L, Li T. Clinical utility of a short resting-state MRI scan in differentiating bipolar from unipolar depression. Acta Psychiatr Scand 2017; 136:288-299. [PMID: 28504840 DOI: 10.1111/acps.12752] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/18/2017] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Depression in bipolar disorder (BipD) requires a therapeutic approach that is from treating unipolar major depressive disorder (UniD), but to date, no reliable methods could separate these two disorders. The aim of this study was to establish the clinical validity and utility of a non-invasive functional MRI-based method to classify BipD from UniD. METHOD The degree of connectivity (degree centrality or DC) of every small unit (voxel) with every other unit of the brain was estimated in 22 patients with BipD and 22 age, gender, and depressive severity-matched patients with UniD and 22 healthy controls. Pattern classification analysis was carried out using a support-vector machine (SVM) approach. RESULTS Degree centrality pattern from 8-min resting fMRI discriminated BipD from UniD with an accuracy of 86% and diagnostic odds ratio of 9.6. DC was reduced in the left insula and increased in bilateral precuneus in BipD when compared to UniD. In this sample with a high degree of uncertainty (50% prior probability), positive predictive value of the DC test was 79%. CONCLUSION Degree centrality maps are potential candidate measures to separate bipolar depression from unipolar depression. Test performance reported here requires further pragmatic evaluation in regular clinical practice.
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Affiliation(s)
- M Li
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - T Das
- Robarts Research Institute & The Brain and Mind Institute, University of Western Ontario, London, ON, Canada.,Department of Psychiatry, University of Western Ontario, London, ON, Canada.,Lawson Health Research Institute, London, ON, Canada
| | - W Deng
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Q Wang
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Y Li
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - L Zhao
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - X Ma
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Y Wang
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - H Yu
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - X Li
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Y Meng
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - L Palaniyappan
- Robarts Research Institute & The Brain and Mind Institute, University of Western Ontario, London, ON, Canada.,Department of Psychiatry, University of Western Ontario, London, ON, Canada.,Lawson Health Research Institute, London, ON, Canada
| | - T Li
- Mental Health Center, West China Hospital of Sichuan University, Chengdu, China.,State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, China.,West China Brain Research Center, West China Hospital of Sichuan University, Chengdu, China
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Goyal P, Padhi TR, Das T, Pradhan L, Sutar S, Butola S, Behera UC, Jain L, Jalali S. Outcome of universal newborn eye screening with wide-field digital retinal image acquisition system: a pilot study. Eye (Lond) 2017; 32:67-73. [PMID: 28737759 DOI: 10.1038/eye.2017.129] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 04/27/2017] [Indexed: 12/25/2022] Open
Abstract
PurposeTo evaluate the outcome of universal newborn eye screening with wide-field digital retinal imaging (WFDRI) system.MethodsIn this pilot study, we examined 1152 apparently healthy newborn infants in the obstetrics and gynecology ward of a civil hospital in Eastern India over 1.5 years. The examination included external eye examination, red reflex test and fundus imaging by WFDRI (RetCam II, Clarity medical system, Pleasanton, CA, USA) by a trained optometrist. The pathologies detected, net monetary gain and skilled manpower saved were documented. The results were compared with three similar studies thus far published in the literature.ResultsOcular abnormality of any kind was seen in 172 (14.93%) babies. Retinal hemorrhage in 153 babies (88.9% of all abnormal findings) was the most common abnormality; it was bilateral in 118 (77.12%) babies and 4 babies had foveal hemorrhage. Other abnormalities included vitreous hemorrhage (n=1), congenital glaucoma (n=2), uveal coloboma (n=2), retinopathy mimicking retinopathy of prematurity (n=2), and cystic fovea (n=3). The retinal hemorrhages resolved spontaneously in all eyes. One baby with congenital glaucoma received surgery and the other was treated medically. The benefits included savings in skilled manpower, a net monetary gain of INR 4.195 million (US$ 62,612) and skilled manpower saving by 319.4 h.ConclusionsThe universal neonatal eye screening using WFDRI detected pathologies that needed immediate care or regular follow up; saved skilled manpower with a net monetary gain. But compared to a red reflex test the benefits were marginal in terms of detecting treatment warranting ocular pathologies.
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Affiliation(s)
- P Goyal
- Retina and Vitreous services, Shri Mithu Tulsi Chanrai Campus, LV Prasad Eye Institute, Bhubaneswar, India
| | - T R Padhi
- Retina and Vitreous services, Shri Mithu Tulsi Chanrai Campus, LV Prasad Eye Institute, Bhubaneswar, India
| | - T Das
- Smt. Kanuri Santhamma Center for Vitreoretinal Services, Kallam Anji Reddy Campus, LV Prasad Eye Institute, Hyderabad, India
| | - L Pradhan
- Infosys Pediatric Center, Capital Hospital, Bhubaneswar, India
| | - S Sutar
- Retina and Vitreous services, Shri Mithu Tulsi Chanrai Campus, LV Prasad Eye Institute, Bhubaneswar, India
| | - S Butola
- Retina and Vitreous services, Shri Mithu Tulsi Chanrai Campus, LV Prasad Eye Institute, Bhubaneswar, India
| | - U C Behera
- Retina and Vitreous services, Shri Mithu Tulsi Chanrai Campus, LV Prasad Eye Institute, Bhubaneswar, India
| | - L Jain
- Retina and Vitreous services, Shri Mithu Tulsi Chanrai Campus, LV Prasad Eye Institute, Bhubaneswar, India
| | - S Jalali
- Smt. Kanuri Santhamma Center for Vitreoretinal Services, Kallam Anji Reddy Campus, LV Prasad Eye Institute, Hyderabad, India
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Fatema K, Das T, Mannan A, Zaman SM. Frequency, Distribution of Congenital Anomaly and Associated Maternal Risk Factors. Mymensingh Med J 2017; 26:658-666. [PMID: 28919624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study was done to find out the maternal risk factors associated with congenital anomaly. This cross-sectional observational study was carried out in the Department of Obstetrics and Gynaecology, Bangabandhu Sheikh Mujib Medical University (BSMMU) Hospital, Dhaka, Bangladesh from January 2011 to December 2011. During this study period 78 patients had pregnancy with congenital anomaly and delivered in the Department of Obstetrics and Gynaecology. Women with ultrasound report of congenitally abnormal fetus irrespective of gestational age were included. Clinical evaluation of neonates was done by experienced neonatologist. The frequency of congenital anomaly was 3.46%. Most of the women belong to age <35 years (97.43%). Congenital anomalies more commonly were seen in the primiparas (64.10%). Most frequent associated risk factor was the history of abortions (35.89%). Maternal infections during antenatal period were also high (15.58%). There were 58 males (74.35%) and 20 females (25.64%). There was positive history of delivery of congenital abnormal babies in 6 cases (7.6%). Mothers of eight cases (10.25%) had history of drug ingestion during pregnancy. Four cases (5.12%) of mothers had hypothyroidism and 6 cases of mothers (7.69%) had diabetes mellitus respectively.
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Affiliation(s)
- K Fatema
- Dr Kaniz Fatema, Assistant Professor, Department of Obstetrics and Gynecology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
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Roy S, Kuddannaya S, Das T, Lee HY, Lim J, Hu X'M, Chee Yoon Y, Kim J. A novel approach for fabricating highly tunable and fluffy bioinspired 3D poly(vinyl alcohol) (PVA) fiber scaffolds. Nanoscale 2017; 9:7081-7093. [PMID: 28513711 DOI: 10.1039/c7nr00503b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The excellent biocompatibility, biodegradability and chemo-thermal stability of poly(vinyl alcohol) (PVA) have been harnessed in diverse practical applications. These properties have motivated the fabrication of high performance PVA based nanofibers with adequate control over the micro and nano-architectures and surface chemical interactions. However, the high water solubility and hydrophilicity of the PVA polymer limits the application of the electrospun PVA nanofibers in aqueous environments owing to instantaneous dissolution. In this work, we report a novel yet facile concept for fabricating extremely light, fluffy, insoluble and stable three dimensional (3D) PVA fibrous scaffolds with/without coating for multifunctional purposes. While the solubility, morphology, fiber density and mechanical properties of nanofibers could be tuned by optimizing the cross-linking conditions, the surface chemical reactivity could be readily enhanced by coating with a polydopamine (pDA) bioinspired polymer without compromising the stability and innate properties of the native PVA fiber. The 3D pDA-PVA scaffolds exhibited super dye adsorption and constructive synergistic cell-material interactions by promoting healthy adhesion and viability of the human mesenchymal stem cells (hMSCs) within 3D micro-niches. We foresee the application of tunable PVA 3D as a highly adsorbent material and a scaffold material for tissue regeneration and drug delivery with close consideration of realistic in vivo parameters.
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Affiliation(s)
- Sunanda Roy
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798.
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Chakraborti S, Chakraborty S, Saha S, Manna A, Banerjee S, Adhikary A, Sarwar S, Hazra TK, Das T, Chakrabarti P. PEG-functionalized zinc oxide nanoparticles induce apoptosis in breast cancer cells through reactive oxygen species-dependent impairment of DNA damage repair enzyme NEIL2. Free Radic Biol Med 2017; 103:35-47. [PMID: 27940348 DOI: 10.1016/j.freeradbiomed.2016.11.048] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 11/10/2016] [Accepted: 11/28/2016] [Indexed: 12/22/2022]
Abstract
We find that PEG functionalized ZnO nanoparticles (NP) have anticancer properties primarily because of ROS generation. Detailed investigation revealed two consequences depending on the level of ROS - either DNA damage repair or apoptosis - in a time-dependent manner. At early hours of treatment, NP promote NEIL2-mediated DNA repair process to counteract low ROS-induced DNA damage. However, at late hours these NP produce high level of ROS that inhibits DNA repair process, thereby directing the cell towards apoptosis. Mechanistically at low ROS conditions, transcription factor Sp1 binds to the NEIL2 promoter and facilitates its transcription for triggering a 'fight-back mechanism' thereby resisting cancer cell apoptosis. In contrast, as ROS increase during later hours, Sp1 undergoes oxidative degradation that decreases its availability for binding to the promoter thereby down-regulating NEIL2 and impairing the repair mechanism. Under such conditions, the cells strategically switch to the p53-dependent apoptosis.
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Affiliation(s)
- Soumyananda Chakraborti
- Department of Biochemistry, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India
| | - Samik Chakraborty
- Division of Molecular Medicine, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India
| | - Shilpi Saha
- Division of Molecular Medicine, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India
| | - Argha Manna
- Division of Molecular Medicine, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India
| | - Shruti Banerjee
- Division of Molecular Medicine, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India
| | - Arghya Adhikary
- Division of Molecular Medicine, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India
| | - Shamila Sarwar
- Department of Biochemistry, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India
| | - Tapas K Hazra
- Sealy Center for Molecular Science, University of Texas Medical Branch, Galveston, TX 77555-1079, United States
| | - Tanya Das
- Division of Molecular Medicine, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India.
| | - Pinak Chakrabarti
- Department of Biochemistry, Bose Institute, P-1/12 C.I.T. Scheme, VIIM, Kolkata 700054, India.
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Manna A, Banerjee S, Khan P, Bhattacharya A, Das T. Contribution of nuclear events in generation and maintenance of cancer stem cells: revisiting chemo-resistance. Nucleus 2017. [DOI: 10.1007/s13237-017-0193-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Kakoudaki M, Marshall R, Danson S, Fisher P, Hatton M, Lee C, Das T, Bates E, Woll P, Taylor F. 67: Outcomes of patients in South Yorkshire who received maintenance pemetrexed treatment for non-squamous, non-small-cell cancer after induction chemotherapy with pemetrexed and cisplatin. Lung Cancer 2017. [DOI: 10.1016/s0169-5002(17)30117-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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John JK, Sethi M, Das T, Hingade SS, Arun A, Tomar N, Saikumar G. Occurrence of Opisthorchis spp. infection in liver of pigs: An abattoir survey. ACTA ACUST UNITED AC 2017. [DOI: 10.5958/0973-970x.2017.00031.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
Medication nonadherence is a known problem after renal transplantation and can vary from one setting to another. Since it can lead to negative outcomes, it is important to develop intervention strategies to enhance adherence in a given setting using determinants identified through exploratory studies. We explored nonadherence in renal transplant recipients. A longitudinal survey was done with adult renal transplant recipients at a tertiary care public and two private hospitals of Kolkata. Subjects were followed-up for 1 year. After screening for medication adherence status by the four-item Morisky Medication Adherence Scale, those admitting to potential nonadherence were probed further. A patient was deemed to be nonadherent if failing to take medicines on appointed time (doses missed or delayed by more than 2 h) more than three times in any month during the observation period. A pretested questionnaire was used to explore potential determinants of nonadherence. Data of 153 patients recruited over a 2-year were analyzed. The extent of nonadherence with immunosuppressant regimens was about 31% overall; 44% in the public sector and 19% in the private sector (P < 0.001). Nonadherence with other medication was around 19% in both the sectors. Several potential demographic, socioeconomic and psychosocial determinants of nonadherence were identified on univariate analysis. However, logistic regression analysis singled out only the economic status. This study had updated the issue of nonadherence in renal transplant recipients in the Indian setting. Strategies to improve medication adherence can be planned by relevant stakeholders on the basis of these findings.
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Affiliation(s)
| | - A Taraphder
- Department of Nephrology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
| | - A Hazra
- Department of Pharmacology, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
| | - T Das
- Department of Medicine, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India
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Nair RR, Padhee S, Das T, Green R, Howell M, Mohapatra SS, Mohapatra S. Three- and Four-Dimensional Spheroid and FiSS Tumoroid Cultures: Platforms for Drug Discovery and Development and Translational Research. Crit Rev Ther Drug Carrier Syst 2017; 34:185-208. [DOI: 10.1615/critrevtherdrugcarriersyst.2017018042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yuan J, Usman A, Das T, Patterson AJ, Gillard JH, Graves MJ. Imaging Carotid Atherosclerosis Plaque Ulceration: Comparison of Advanced Imaging Modalities and Recent Developments. AJNR Am J Neuroradiol 2016; 38:664-671. [PMID: 28007772 DOI: 10.3174/ajnr.a5026] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Atherosclerosis remains the leading cause of long-term mortality and morbidity worldwide, despite remarkable advancement in its management. Vulnerable atherosclerotic plaques are principally responsible for thromboembolic events in various arterial territories such as carotid, coronary, and lower limb vessels. Carotid plaque ulceration is one of the key features associated with plaque vulnerability and is considered a notable indicator of previous plaque rupture and possible future cerebrovascular events. Multiple imaging modalities have been used to assess the degree of carotid plaque ulceration for diagnostic and research purposes. Early diagnosis and management of carotid artery disease could prevent further cerebrovascular events. In this review, we highlight the merits and limitations of various imaging techniques for identifying plaque ulceration.
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Affiliation(s)
- J Yuan
- From the Department of Radiology (J.Y., A.U., J.H.G., M.J.G.), University of Cambridge, Cambridge, UK
| | - A Usman
- From the Department of Radiology (J.Y., A.U., J.H.G., M.J.G.), University of Cambridge, Cambridge, UK
| | - T Das
- Department of Radiology (T.D., A.J.P., M.J.G.), Cambridge University Hospitals National Health Service Foundation Trust, Cambridge, UK
| | - A J Patterson
- Department of Radiology (T.D., A.J.P., M.J.G.), Cambridge University Hospitals National Health Service Foundation Trust, Cambridge, UK
| | - J H Gillard
- From the Department of Radiology (J.Y., A.U., J.H.G., M.J.G.), University of Cambridge, Cambridge, UK
| | - M J Graves
- From the Department of Radiology (J.Y., A.U., J.H.G., M.J.G.), University of Cambridge, Cambridge, UK.,Department of Radiology (T.D., A.J.P., M.J.G.), Cambridge University Hospitals National Health Service Foundation Trust, Cambridge, UK
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Brost E, Brooks J, Piepenburg J, Chakraborty S, Das T, Green A, Watanabe Y, Hui S. SU-G-TeP3-07: On the Development of Mechano-Biological Assessment of Leukemia Cells Using Optical Tweezers. Med Phys 2016. [DOI: 10.1118/1.4957087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Mukherjee S, Manna A, Bhattacharjee P, Mazumdar M, Saha S, Chakraborty S, Guha D, Adhikary A, Jana D, Gorain M, Mukherjee SA, Kundu GC, Sarkar DK, Das T. Non-migratory tumorigenic intrinsic cancer stem cells ensure breast cancer metastasis by generation of CXCR4+ migrating cancer stem cells. Oncogene 2016; 35:4937-48. [DOI: 10.1038/onc.2016.26] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 11/02/2015] [Accepted: 11/27/2015] [Indexed: 12/18/2022]
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