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  1. Article ; Online: Tunneling nanotubes: The intercellular conduits contributing to cancer pathogenesis and its therapy.

    Melwani, Pooja Kamal / Pandey, Badri Narain

    Biochimica et biophysica acta. Reviews on cancer

    2023  Volume 1878, Issue 6, Page(s) 189028

    Abstract: Tunneling nanotubes (TNTs) are intercellular conduits which meet the communication needs of non-adjacent cells situated in the same tissue but at distances up to a few hundred microns. TNTs are unique type of membrane protrusion which contain F-actin and ...

    Abstract Tunneling nanotubes (TNTs) are intercellular conduits which meet the communication needs of non-adjacent cells situated in the same tissue but at distances up to a few hundred microns. TNTs are unique type of membrane protrusion which contain F-actin and freely hover over substratum in the extracellular space to connect the distant cells. TNTs, known to form through actin remodeling mechanisms, are intercellular bridges that connect cytoplasm of two cells, and facilitate the transfer of organelles, molecules, and pathogens among the cells. In tumor microenvironment, TNTs act as communication channel among cancer, normal, and immune cells to facilitate the transfer of calcium waves, mitochondria, lysosomes, and proteins, which in turn contribute to the survival, metastasis, and chemo-resistance in cancer cells. Recently, TNTs were shown to mediate the transfer of nanoparticles, drugs, and viruses between cells, suggesting that TNTs could be exploited as a potential route for delivery of anti-cancer agents and oncolytic viruses to the target cells. The present review discusses the emerging concepts and role of TNTs in the context of chemo- and radio-resistance with implications in the cancer therapy.
    MeSH term(s) Humans ; Cell Communication ; Neoplasms/therapy ; Nanotubes ; Calcium Signaling ; Actins ; Tumor Microenvironment
    Chemical Substances Tunneling Nanotubes ; Actins
    Language English
    Publishing date 2023-11-20
    Publishing country Netherlands
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2918802-7
    ISSN 1879-2561 ; 0304-419X
    ISSN (online) 1879-2561
    ISSN 0304-419X
    DOI 10.1016/j.bbcan.2023.189028
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Early indications of clinical trials direct toward need of research for successful low-dose radiation therapy for COVID-19 pneumonia

    Badri Narain Pandey

    Journal of Radiation and Cancer Research, Vol 12, Iss 2, Pp 39-

    2021  Volume 40

    Keywords Medical physics. Medical radiology. Nuclear medicine ; R895-920 ; Neoplasms. Tumors. Oncology. Including cancer and carcinogens ; RC254-282
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Low-dose radiation therapy for coronavirus disease-2019 pneumonia: Is it time to look beyond apprehensions?

    Pandey, Badri Narain

    Annals of thoracic medicine

    2020  Volume 15, Issue 4, Page(s) 199–207

    Abstract: Coronavirus disease-2019 (COVID-19) has become a global health crisis. Mortality associated with COVID-19 is characterized mainly by acute respiratory distress syndrome (ARDS), sepsis, pneumonia, and respiratory failure. The pathogenesis of the disease ... ...

    Abstract Coronavirus disease-2019 (COVID-19) has become a global health crisis. Mortality associated with COVID-19 is characterized mainly by acute respiratory distress syndrome (ARDS), sepsis, pneumonia, and respiratory failure. The pathogenesis of the disease is known to be associated with pro-inflammatory processes after virus infection. Hence, various therapeutic strategies are being developed to control the inflammation and cytokine storm in COVID-19 patients. Recently, low-dose radiation therapy (LDRT) has been suggested for the treatment of pneumonia/ADRS in COVID-19 patients through irradiation of lungs by gamma/X-ray. In this direction, a few clinical trials have also been initiated. However, a few recent publications have raised some concerns regarding LDRT, especially about possibilities of activation/aggressiveness of virus (severe acute respiratory syndrome coronavirus 2 in case of COVID-19), lung injury and risk of second cancer after low-dose therapy. The present manuscript is an attempt to analyze these apprehensions based on cited references and other available literature, including some from our laboratory. At this point, LDRT may be not the first line of therapy. However, based on existing anti-inflammatory evidence of LDRT, it needs encouragement as an adjuvant therapy and for more multi-centric clinical trials. In addition, it would be worth combining LDRT with other anti-inflammatory therapies, which would open avenues for multi-modal therapy of pneumonia/ARDS in COVID-19 patients. The mode of irradiation (local lung irradiation or whole-body irradiation) and the window period after infection of the virus, need to be optimized using suitable animal studies for effective clinical outcomes of LDRT. However, considering ample evidence, it is time to look beyond the apprehensions if a low dose of radiation could be exploited for better management of COVID-19 patients.
    Language English
    Publishing date 2020-10-10
    Publishing country India
    Document type Journal Article
    ZDB-ID 2241287-6
    ISSN 1998-3557 ; 1817-1737
    ISSN (online) 1998-3557
    ISSN 1817-1737
    DOI 10.4103/atm.ATM_433_20
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Low-dose radiation therapy for coronavirus disease-2019 pneumonia

    Badri Narain Pandey

    Annals of Thoracic Medicine, Vol 15, Iss 4, Pp 199-

    Is it time to look beyond apprehensions?

    2020  Volume 207

    Abstract: Coronavirus disease-2019 (COVID-19) has become a global health crisis. Mortality associated with COVID-19 is characterized mainly by acute respiratory distress syndrome (ARDS), sepsis, pneumonia, and respiratory failure. The pathogenesis of the disease ... ...

    Abstract Coronavirus disease-2019 (COVID-19) has become a global health crisis. Mortality associated with COVID-19 is characterized mainly by acute respiratory distress syndrome (ARDS), sepsis, pneumonia, and respiratory failure. The pathogenesis of the disease is known to be associated with pro-inflammatory processes after virus infection. Hence, various therapeutic strategies are being developed to control the inflammation and cytokine storm in COVID-19 patients. Recently, low-dose radiation therapy (LDRT) has been suggested for the treatment of pneumonia/ADRS in COVID-19 patients through irradiation of lungs by gamma/X-ray. In this direction, a few clinical trials have also been initiated. However, a few recent publications have raised some concerns regarding LDRT, especially about possibilities of activation/aggressiveness of virus (severe acute respiratory syndrome coronavirus 2 in case of COVID-19), lung injury and risk of second cancer after low-dose therapy. The present manuscript is an attempt to analyze these apprehensions based on cited references and other available literature, including some from our laboratory. At this point, LDRT may be not the first line of therapy. However, based on existing anti-inflammatory evidence of LDRT, it needs encouragement as an adjuvant therapy and for more multi-centric clinical trials. In addition, it would be worth combining LDRT with other anti-inflammatory therapies, which would open avenues for multi-modal therapy of pneumonia/ARDS in COVID-19 patients. The mode of irradiation (local lung irradiation or whole-body irradiation) and the window period after infection of the virus, need to be optimized using suitable animal studies for effective clinical outcomes of LDRT. However, considering ample evidence, it is time to look beyond the apprehensions if a low dose of radiation could be exploited for better management of COVID-19 patients.
    Keywords corona virus disease-2019 ; cytokine storm ; low-dose radiation therapy ; pneumonia ; Diseases of the circulatory (Cardiovascular) system ; RC666-701 ; Diseases of the respiratory system ; RC705-779 ; covid19
    Subject code 610 ; 616
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Cytoproliferative effect of low dose alpha radiation in human lung cancer cells is associated with connexin 43, caveolin-1, and survivin pathway.

    Rajan, Vasumathy / Pandey, Badri Narain

    International journal of radiation biology

    2021  Volume 97, Issue 3, Page(s) 356–366

    Abstract: Purpose: High LET including alpha radiation-based approaches have been proved as a promising mode for cancer therapy owing to their biophysical and radiobiological advantages compared to photon beams. Studies pertaining to effect of α-radiation on ... ...

    Abstract Purpose: High LET including alpha radiation-based approaches have been proved as a promising mode for cancer therapy owing to their biophysical and radiobiological advantages compared to photon beams. Studies pertaining to effect of α-radiation on cancer cells are limited to cytotoxic high doses.
    Materials and methods: In this study, human lung adenocarcinoma (A549) cells were α-irradiated using
    Results: Clonogenic and other assays showed increased cellular proliferation at lower doses (1.36 and 6.8 cGy) but killing at higher doses (13.6-54.4 cGy). Further studies at low dose of alpha (1.36 cGy) showed increased TGF-β1 in the conditioned medium (CM) at early time point (24 h) but CM replacement did not affect the clonogenic survival. In these cells, increased phosphorylation of connexin 43 was correlated with decrease in gap-junction communication observed by dye transfer co-culture experiment. A decrease in caveolin-1 but increase in survivin expression was observed in low dose α-irradiated cells. An increase in cyclinD1 and decrease in Bcl-2, the target proteins of survivin, was observed in these cells. Low dose α-irradiated cancer cells transplanted in SCID mice showed significantly higher tumor volume, which was accompanied with an increased fraction of mitotic and PCNA/Ki67 positive cells in these tumor tissues.
    Conclusions: Taken together, our results suggest an increase in proliferation and tumor volume at
    MeSH term(s) Alpha Particles/therapeutic use ; Animals ; Caveolin 1/analysis ; Caveolin 1/physiology ; Cell Line, Tumor ; Cell Proliferation/radiation effects ; Connexin 43/analysis ; Connexin 43/physiology ; Humans ; Lung Neoplasms/pathology ; Lung Neoplasms/radiotherapy ; Mice ; Signal Transduction/physiology ; Survivin/analysis ; Survivin/physiology
    Chemical Substances BIRC5 protein, human ; CAV1 protein, human ; Caveolin 1 ; Connexin 43 ; GJA1 protein, human ; Survivin
    Language English
    Publishing date 2021-01-08
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3065-x
    ISSN 1362-3095 ; 0020-7616 ; 0955-3002
    ISSN (online) 1362-3095
    ISSN 0020-7616 ; 0955-3002
    DOI 10.1080/09553002.2021.1864044
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Imaging of bacterial infection: Harnessing positron emission tomography and Cherenkov luminescence imaging with UBI-derived octapeptide.

    Mitra, Jyotsna Bhatt / Mukherjee, Archana / Kumar, Anuj / Chandak, Ashok / Rakshit, Sutapa / Yadav, Hansa D / Pandey, Badri Narain / Sarma, Haladhar Dev

    Drug development research

    2023  Volume 84, Issue 7, Page(s) 1513–1521

    Abstract: Noninvasive imaging techniques for the early detection of infections are in high demand. In this study, we present the development of an infection imaging agent consisting of the antimicrobial peptide fragment UBI (31-38) conjugated to the chelator 1,4,7- ...

    Abstract Noninvasive imaging techniques for the early detection of infections are in high demand. In this study, we present the development of an infection imaging agent consisting of the antimicrobial peptide fragment UBI (31-38) conjugated to the chelator 1,4,7-triazacyclononane,1-glutaric acid-4,7-acetic acid (NODAGA), which allows for labeling with the positron emitter Ga-68. The preclinical evaluation of [
    MeSH term(s) Animals ; Humans ; Gallium Radioisotopes/chemistry ; Fluorodeoxyglucose F18 ; Staphylococcus aureus ; Tissue Distribution ; Luminescence ; Positron-Emission Tomography/methods ; Staphylococcal Infections/diagnostic imaging ; Chelating Agents
    Chemical Substances 1-(1,3-carboxypropyl)-4,7-carboxymethyl-1,4,7-triazacyclononane ; Gallium-68 (98B30EPP5S) ; Gallium Radioisotopes ; Fluorodeoxyglucose F18 (0Z5B2CJX4D) ; Chelating Agents
    Language English
    Publishing date 2023-08-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 604587-x
    ISSN 1098-2299 ; 0272-4391
    ISSN (online) 1098-2299
    ISSN 0272-4391
    DOI 10.1002/ddr.22103
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: DNA damage and survival in bystander human intestinal cells treated with conditioned medium from tritium-labeled cells

    Manjoor Ali / Vasumathy Rajan / Badri Narain Pandey

    Journal of Radiation and Cancer Research, Vol 11, Iss 4, Pp 161-

    2020  Volume 166

    Abstract: Background: Tritium exposure could be one of the radiation hazards in case of accidental exposure with intestine as one of the major target organs. In the cells, low-energy beta emitted from tritium would traverse a very short distance (a few microns). ... ...

    Abstract Background: Tritium exposure could be one of the radiation hazards in case of accidental exposure with intestine as one of the major target organs. In the cells, low-energy beta emitted from tritium would traverse a very short distance (a few microns). Hence, the intestinal epithelial cells with nuclear localization of tritium would exert its radiobiological effect also through bystander mechanism. In the present study, the effect of conditioned medium obtained from tritiated thymidine-labeled human normal intestinal epithelial (INT407) cells was studied on respective bystander cells in terms of magnitude of survival and induction of DNA damage. Materials and Methods: The survival and proliferation of bystander INT407 cells treated with control/irradiated conditioned medium were studied using clonogenic and 5-bromo-2-deoxyuridine (BrdU)-labeling assays. The magnitude of DNA double-strand break was measured by immunofluorescence of η-H2AX by confocal microscopy. Intracellular nitric oxide (NO) in these cells was measured using 4,5-diaminofluorescein diacetate fluorescent dye. Results: Bystander cells treated with conditioned medium from tritiated thymidine-labeled cells showed increased clonogenic survival and BrdU labeling. Cells labeled with tritiated thymidine showed attenuation of η-H2AX foci at longer period (24 and 48 h) of labeling than at 15 h. Moreover, the bystander cells treated with irradiated conditioned medium showed a higher magnitude of η-H2AX foci at 24 h. However, compared to 24 h, 48-h treatment of irradiated conditioned medium resulted in a decrease in η-H2AX foci in the bystander cells. Increased level of intracellular NO was observed in the bystander cells treated with irradiated conditioned medium. Conclusions: Bystander cells treated with conditioned medium obtained from tritiated thymidine-labeled cells showed increased clonogenic survival and proliferation, which was correlated with an increase in DNA double-strand break and NO production in these cells.
    Keywords bystander effect ; dna damage ; intestinal cells ; proliferation ; tritium ; Medical physics. Medical radiology. Nuclear medicine ; R895-920 ; Neoplasms. Tumors. Oncology. Including cancer and carcinogens ; RC254-282
    Subject code 610
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Membrane permeability changes in radiation-induced apoptotic mouse thymocytes

    Badri Narain Pandey / Kaushala Prasad Mishra

    Journal of Radiation and Cancer Research, Vol 9, Iss 3, Pp 119-

    2018  Volume 124

    Abstract: Objective: Radiation-induced alterations in permeability of plasma membrane and associated apoptotic changes were investigated in apoptotic thymocytes induced by radiation. Materials and Methods: Immature mouse thymocytes suspended in RPMI 1640 were ... ...

    Abstract Objective: Radiation-induced alterations in permeability of plasma membrane and associated apoptotic changes were investigated in apoptotic thymocytes induced by radiation. Materials and Methods: Immature mouse thymocytes suspended in RPMI 1640 were irradiated by γ-rays for desired doses up to 10 Gy and these cells were examined after incubation (up to 24 h) at 37°C. Radiation-induced changes in plasma membrane of thymocytes were determined by fluorescence technique using fluorescein diacetate (FDA) and trypan blue (TB) method. Induction of apoptosis in irradiated cells was determined using annexin-V as fluorescence probe method and measurement of cytosolic caspase-3 activity. Results: Radiation-induced apoptotic thymocytes showed an increase in membrane permeability as observed by leakage of FDA, which was poorly detected by TB. FDA could sensitively detect the dose-dependent variation in membrane permeability alterations in the range of 0.5–2 Gy incubated at 37°C. In radiation-induced apoptotic death, externalization of phosphatidylserine is an early event than caspase-3 activation. On incubation of cells, an increase in caspase-3 activity and proportion of annexin-positive cells was observed, which further increased after irradiation. Conclusion: Our results showed membrane permeability changes induced by γ-irradiation, which seem to be closely associated with the apoptosis in thymocytes.
    Keywords Apoptosis ; membrane permeability ; thymocytes ; Medical physics. Medical radiology. Nuclear medicine ; R895-920 ; Neoplasms. Tumors. Oncology. Including cancer and carcinogens ; RC254-282
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Integrated transcriptomic and proteomic analysis of microplasts derived from macrophage-conditioned medium-treated MCF-7 breast cancer cells.

    Melwani, Pooja Kamal / Balla, Murali Mohan Sagar / S, Nishad / Padwal, Mahesh / Chaurasia, Rajesh Kumar / Basu, Bhakti / Ghosh, Anu / Pandey, Badri Narain

    FEBS letters

    2021  Volume 595, Issue 13, Page(s) 1844–1860

    Abstract: Microplasts are large extracellular vesicles originating from migratory, invasive, and metastatic cancer cells. Here, to gain insight into the role of microplasts in cancer progression, we performed a proteomic and transcriptomic characterization of ... ...

    Abstract Microplasts are large extracellular vesicles originating from migratory, invasive, and metastatic cancer cells. Here, to gain insight into the role of microplasts in cancer progression, we performed a proteomic and transcriptomic characterization of microplasts isolated from MCF-7 breast cancer cells treated with macrophage-conditioned medium. These cells were found to be viable, highly migratory, and metabolically active, indicating that microplasts derived from these cells are not apoptotic bodies. Transcriptomic/proteomic analyses identified 10273 mRNAs and 821 proteins in microplasts. Interestingly, 377 microplast mRNAs coded for corresponding microplast proteins. Microplast mRNAs and proteins were mainly associated with binding and catalytic activities. Microplasts showed enrichment of mRNAs involved in transcription regulation and proteins involved in processes such as cell-cell adhesion and translation. Pathway analysis showed enrichment of ribosomes and carbon metabolism. These results suggest a close resemblance between microplasts and parent cells, with mRNA and protein cargo relevant in intercellular signaling.
    MeSH term(s) Breast Neoplasms/genetics ; Breast Neoplasms/metabolism ; Breast Neoplasms/pathology ; Cell Adhesion ; Cell Culture Techniques ; Cell Line, Tumor ; Cell Movement ; Chromatography, Liquid ; Culture Media, Conditioned/chemistry ; Disease Progression ; Extracellular Vesicles/genetics ; Extracellular Vesicles/metabolism ; Female ; Gene Expression Profiling/methods ; Gene Expression Regulation, Neoplastic ; Gene Regulatory Networks ; High-Throughput Nucleotide Sequencing ; Humans ; MCF-7 Cells ; Macrophages/chemistry ; Macrophages/cytology ; Protein Interaction Maps ; Proteomics/methods ; Tandem Mass Spectrometry ; U937 Cells
    Chemical Substances Culture Media, Conditioned
    Language English
    Publishing date 2021-05-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 212746-5
    ISSN 1873-3468 ; 0014-5793
    ISSN (online) 1873-3468
    ISSN 0014-5793
    DOI 10.1002/1873-3468.14108
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Prognosis of metastasis based on age and serum analytes after follow-up of non-metastatic lung cancer patients.

    Balla, Murali Mohan Sagar / Patwardhan, Sejal / Melwani, Pooja Kamal / Purwar, Pallavi / Kumar, Amit / Pramesh, C S / Laskar, Siddharth / Pandey, Badri Narain

    Translational oncology

    2020  Volume 14, Issue 1, Page(s) 100933

    Abstract: At the diagnostic stage, metastasis detection is around 75% in the lung cancer patients. Major clinical challenge faced by medical oncologists is the unpredictable metastasis development in non-metastatic patients. The literature regarding the biomarkers/ ...

    Abstract At the diagnostic stage, metastasis detection is around 75% in the lung cancer patients. Major clinical challenge faced by medical oncologists is the unpredictable metastasis development in non-metastatic patients. The literature regarding the biomarkers/factors prognosticating metastasis in non-metastatic patients during follow-up is very limited. In this pilot study, the levels of serum biomarkers (IL-8, VEGF, MMP-2, MMP-9) were measured at diagnosis stage of non-metastatic lung cancer patients and these observations were evaluated for metastasis development after follow-up of median 29.2 months. After follow-up, ∼40% of these patients developed metastasis. The average age of non-metastatic patients which later developed metastasis, was found to be lower than the patients continued to be non-metastatic. These patients also showed higher levels of IL-8 and MMP-9 than the patients which did not develop metastasis. Analysis of Receiver Operating Characteristic Curves, Youden's Index and positive likelihood ratio values showed better diagnostic ability for IL-8 and MMP-9, which improved when both markers used together. Moreover, patients with age ≤60 years showed higher prognostic ability of metastasis development, which was significantly enhanced when patient age was analysed with IL-8. These results suggest potential of serum analytes (IL-8, MMP-9) and/or patient age in prognosticating the metastasis development in non-metastatic patients.
    Language English
    Publishing date 2020-11-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2443840-6
    ISSN 1936-5233 ; 1936-5233 ; 1944-7124
    ISSN (online) 1936-5233
    ISSN 1936-5233 ; 1944-7124
    DOI 10.1016/j.tranon.2020.100933
    Database MEDical Literature Analysis and Retrieval System OnLINE

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