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  1. Article ; Online: CD36

    Jabbari, Kosar / Cheng, Qingsu / Winkelmaier, Garrett / Furuta, Saori / Parvin, Bahram

    International journal of molecular sciences

    2022  Volume 23, Issue 21

    Abstract: Tumor and stroma coevolve to facilitate tumor growth. Hence, effective tumor therapeutics would not only induce growth suppression of tumor cells but also revert pro-tumor stroma into anti-tumoral type. Previously, we showed that coculturing triple- ... ...

    Abstract Tumor and stroma coevolve to facilitate tumor growth. Hence, effective tumor therapeutics would not only induce growth suppression of tumor cells but also revert pro-tumor stroma into anti-tumoral type. Previously, we showed that coculturing triple-negative or luminal A breast cancer cells with CD36
    MeSH term(s) Humans ; Female ; Cancer-Associated Fibroblasts/metabolism ; Triple Negative Breast Neoplasms/pathology ; Breast Neoplasms/metabolism ; Cell Line, Tumor ; Fibroblasts/metabolism ; Coculture Techniques ; CD36 Antigens/genetics ; CD36 Antigens/metabolism ; Biomarkers/metabolism ; Ligands
    Chemical Substances CD36 Antigens ; Biomarkers ; Ligands
    Language English
    Publishing date 2022-10-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms232112744
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Rapid identification of a subset of foodborne bacteria in live-cell assays.

    Cheng, Qingsu / Parvin, Bahram

    Applied microbiology and biotechnology

    2020  Volume 104, Issue 24, Page(s) 10571–10584

    Abstract: The detection and identification of microbial pathogens in meat and fresh produce play an essential role in food safety for reducing foodborne illnesses every year. A new approach based on targeting a specific sequence of the 16S rRNA region for each ... ...

    Abstract The detection and identification of microbial pathogens in meat and fresh produce play an essential role in food safety for reducing foodborne illnesses every year. A new approach based on targeting a specific sequence of the 16S rRNA region for each bacterium is proposed and validated. The probe complex consists of a C60, a conjugated RNA detector which targets a specific 16S rRNA sequence, and a complementary fluorescent reporter. The RNA detectors were designed by integrating NIH nucleotide and Vienna RNA Webservice databases, and their specificities were validated by the RDP database. Probe complexes were synthesized for identifying E. coli K12, E. coli O157: H7, S. enterica, Y. enterocolitica, C. perfringens, and L. monocytogenes. First, under controlled conditions of known bacterial mixtures, the efficiency and crosstalk for identifying the foodborne bacteria were quantified to be above 94% and below 5%, respectively. Second, experiments were designed by inoculating meat products by known numbers of bacteria and measuring the limit of detection. In one experiment, 225 g of autoclaved ground chicken was inoculated with 9 E. coli O157:H7, where 6.8 ± 1.2 bacteria with 95% confidence interval were recovered. Third, by positionally printing probe complexes in microwells, specific microorganisms were identified with only one fluorophore. The proposed protocol is a cell-based system, can identify live bacteria in 15 min, requires no amplification, and has the potential to open new surveillance opportunities.Key points• The identification of foodborne bacteria is enabled in live-cell assays.• The limit of detection for 100 g of fresh chicken breast inoculated with 4 bacteria is 2.7 ± 1.4 with 95% confidence interval.• The identification of five bacteria in a coded microwell chip is enabled with only one fluorophore.
    MeSH term(s) Bacteria/genetics ; Colony Count, Microbial ; Escherichia coli O157 ; Food Microbiology ; Foodborne Diseases ; Humans ; Listeria monocytogenes ; RNA, Ribosomal, 16S/genetics
    Chemical Substances RNA, Ribosomal, 16S
    Language English
    Publishing date 2020-11-13
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 392453-1
    ISSN 1432-0614 ; 0171-1741 ; 0175-7598
    ISSN (online) 1432-0614
    ISSN 0171-1741 ; 0175-7598
    DOI 10.1007/s00253-020-10970-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: CD36 + Fibroblasts Secrete Protein Ligands That Growth-Suppress Triple-Negative Breast Cancer Cells While Elevating Adipogenic Markers for a Model of Cancer-Associated Fibroblast

    Kosar Jabbari / Qingsu Cheng / Garrett Winkelmaier / Saori Furuta / Bahram Parvin

    International Journal of Molecular Sciences, Vol 23, Iss 12744, p

    2022  Volume 12744

    Abstract: Tumor and stroma coevolve to facilitate tumor growth. Hence, effective tumor therapeutics would not only induce growth suppression of tumor cells but also revert pro-tumor stroma into anti-tumoral type. Previously, we showed that coculturing triple- ... ...

    Abstract Tumor and stroma coevolve to facilitate tumor growth. Hence, effective tumor therapeutics would not only induce growth suppression of tumor cells but also revert pro-tumor stroma into anti-tumoral type. Previously, we showed that coculturing triple-negative or luminal A breast cancer cells with CD36 + fibroblasts (FBs) in a three-dimensional extracellular matrix induced their growth suppression or phenotypic reversion, respectively. Then, we identified SLIT3, FBLN-1, and PENK as active protein ligands secreted from CD36 + FBs that induced growth suppression of MDA-MB-231 breast cancer cells and determined their minimum effective concentrations. Here, we have expanded our analyses to include additional triple-negative cancer cell lines, BT549 and Hs578T, as well as HCC1937 carrying a BRCA1 mutation. We show that the ectopic addition of each of the three ligands to cancer-associated fibroblasts (CAFs) elevates the expression of CD36, as well as the adipogenic marker FABP4. Lastly, we show that an agonist antibody for one of the PENK receptors induces growth suppression of all cancer cell lines tested but not for non-transformed MCF10A cells. These results clearly suggest that proteins secreted from CD36 + FBs induce not only growth suppression of tumor cells through binding the cognate receptors but also increasing adipogenic markers of CAFs to reprogram tumor stroma.
    Keywords CD36 + fibroblasts ; tumor suppression ; cancer-associated fibroblasts ; stromal reprogramming ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 616
    Language English
    Publishing date 2022-10-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: Rapid identification of a subset of foodborne bacteria in live-cell assays

    Cheng, Qingsu / Parvin, Bahram

    Applied microbiology and biotechnology. 2020 Dec., v. 104, no. 24

    2020  

    Abstract: The detection and identification of microbial pathogens in meat and fresh produce play an essential role in food safety for reducing foodborne illnesses every year. A new approach based on targeting a specific sequence of the 16S rRNA region for each ... ...

    Abstract The detection and identification of microbial pathogens in meat and fresh produce play an essential role in food safety for reducing foodborne illnesses every year. A new approach based on targeting a specific sequence of the 16S rRNA region for each bacterium is proposed and validated. The probe complex consists of a C60, a conjugated RNA detector which targets a specific 16S rRNA sequence, and a complementary fluorescent reporter. The RNA detectors were designed by integrating NIH nucleotide and Vienna RNA Webservice databases, and their specificities were validated by the RDP database. Probe complexes were synthesized for identifying E. coli K12, E. coli O157: H7, S. enterica, Y. enterocolitica, C. perfringens, and L. monocytogenes. First, under controlled conditions of known bacterial mixtures, the efficiency and crosstalk for identifying the foodborne bacteria were quantified to be above 94% and below 5%, respectively. Second, experiments were designed by inoculating meat products by known numbers of bacteria and measuring the limit of detection. In one experiment, 225 g of autoclaved ground chicken was inoculated with 9 E. coli O157:H7, where 6.8 ± 1.2 bacteria with 95% confidence interval were recovered. Third, by positionally printing probe complexes in microwells, specific microorganisms were identified with only one fluorophore. The proposed protocol is a cell-based system, can identify live bacteria in 15 min, requires no amplification, and has the potential to open new surveillance opportunities.Key points• The identification of foodborne bacteria is enabled in live-cell assays.• The limit of detection for 100 g of fresh chicken breast inoculated with 4 bacteria is 2.7 ± 1.4 with 95% confidence interval.• The identification of five bacteria in a coded microwell chip is enabled with only one fluorophore.
    Keywords Escherichia coli K12 ; Escherichia coli O157 ; autoclaving ; bacteria ; biotechnology ; breasts ; chickens ; confidence interval ; databases ; detection limit ; fluorescence ; fluorescent dyes ; food safety ; fresh produce ; ground chicken meat ; monitoring ; nucleotide sequences ; Austria
    Language English
    Dates of publication 2020-12
    Size p. 10571-10584.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 392453-1
    ISSN 1432-0614 ; 0171-1741 ; 0175-7598
    ISSN (online) 1432-0614
    ISSN 0171-1741 ; 0175-7598
    DOI 10.1007/s00253-020-10970-9
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Organoid model of mammographic density displays a higher frequency of aberrant colony formations with radiation exposure.

    Cheng, Qingsu / Parvin, Bahram

    Bioinformatics (Oxford, England)

    2019  Volume 36, Issue 7, Page(s) 1989–1993

    Abstract: Motivation: Aberrant three-dimensional (3D) colony organization of premalignant human mammary epithelial cells (HMECs) is one of the indices of dysplasia. An experiment has been designed where the stiffness of the microenvironment, in 3D culture, has ... ...

    Abstract Motivation: Aberrant three-dimensional (3D) colony organization of premalignant human mammary epithelial cells (HMECs) is one of the indices of dysplasia. An experiment has been designed where the stiffness of the microenvironment, in 3D culture, has been set at either low or high level of mammographic density (MD) and the organoid models are exposed to 50 cGy X-ray radiation. This study utilizes published bioinformatics tools to quantify the frequency of aberrant colony formations by the combined stressors of stiffness and X-ray exposure. One of the goals is to develop a quantitative assay for evaluating the risk factors associated with women with high MD exposed to X-ray radiation.
    Results: Analysis of 3D colony formations indicate that high stiffness, within the range of high MD, and X-ray radiation have an approximately additive effect on increasing the frequency of aberrant colony formations. Since both stiffness and X-ray radiation are DNA-damaging stressors, the additive effect of these stressors is also independently validated by profiling activin A-secreted protein. Secretion of activin A is known to be higher in tissues with a high MD as well as tumor cells. In addition, we show that increased stiffness of the microenvironment also induces phosphorylation of γH2AX-positive foci. The study uses two HMECs derived from a diseased tissue (e.g. MCF10A) and reduction mammoplasty of normal breast tissue (e.g. 184A1) to further demonstrate similar traits in the frequency of aberrant colony organization.
    Supplementary information: Supplementary data are available at Bioinformatics online.
    MeSH term(s) Breast Density ; Breast Neoplasms ; Epithelial Cells ; Female ; Humans ; Organoids ; Phosphorylation ; Radiation Exposure
    Language English
    Publishing date 2019-11-28
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 1422668-6
    ISSN 1367-4811 ; 1367-4803
    ISSN (online) 1367-4811
    ISSN 1367-4803
    DOI 10.1093/bioinformatics/btz888
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Buckyballs conjugated with nucleic acid sequences identifies microorganisms in live cell assays.

    Cheng, Qingsu / Parvin, Bahram

    Journal of nanobiotechnology

    2017  Volume 15, Issue 1, Page(s) 78

    Abstract: Background: Rapid identification of bacteria can play an important role at the point of care, evaluating the health of the ecosystem, and discovering spatiotemporal distributions of a bacterial community. We introduce a method for rapid identification ... ...

    Abstract Background: Rapid identification of bacteria can play an important role at the point of care, evaluating the health of the ecosystem, and discovering spatiotemporal distributions of a bacterial community. We introduce a method for rapid identification of bacteria in live cell assays based on cargo delivery of a nucleic acid sequence and demonstrate how a mixed culture can be differentiated using a simple microfluidic system.
    Methods: C60 Buckyballs are functionalized with nucleic acid sequences and a fluorescent reporter to show that a diversity of microorganisms can be detected and identified in live cell assays. The nucleic acid complexes include an RNA detector, targeting a species-specific sequence in the 16S rRNA, and a complementary DNA with an attached fluorescent reporter. As a result, each bacterium can be detected and visualized at a specific emission frequency through fluorescence microscopy.
    Results: The C60 probe complexes can detect and identify a diversity of microorganisms that include gram-position and negative bacteria, yeast, and fungi. More specifically, nucleic-acid probes are designed to identify mixed cultures of Bacillus subtilis and Streptococcus sanguinis, or Bacillus subtilis and Pseudomonas aeruginosa. The efficiency, cross talk, and accuracy for the C60 probe complexes are reported. Finally, to demonstrate that mixed cultures can be separated, a microfluidic system is designed that connects a single source-well to multiple sinks wells, where chemo-attractants are placed in the sink wells. The microfluidic system allows for differentiating a mixed culture.
    Conclusions: The technology allows profiling of bacteria composition, at a very low cost, for field studies and point of care.
    MeSH term(s) Aptamers, Nucleotide/chemical synthesis ; Aptamers, Nucleotide/chemistry ; Bacillus subtilis/chemistry ; Bacillus subtilis/genetics ; Bacillus subtilis/isolation & purification ; Base Pairing ; Biological Assay/economics ; Biological Assay/instrumentation ; Cell Separation/economics ; Cell Separation/methods ; Chemotactic Factors/chemistry ; Fluorescent Dyes/chemistry ; Fullerenes/chemistry ; Microfluidic Analytical Techniques/economics ; Microfluidic Analytical Techniques/instrumentation ; Microscopy, Fluorescence ; Point-of-Care Systems ; Pseudomonas aeruginosa/chemistry ; Pseudomonas aeruginosa/genetics ; Pseudomonas aeruginosa/isolation & purification ; RNA, Ribosomal, 16S/chemistry ; Sensitivity and Specificity ; Streptococcus sanguis/chemistry ; Streptococcus sanguis/genetics ; Streptococcus sanguis/isolation & purification
    Chemical Substances Aptamers, Nucleotide ; Chemotactic Factors ; Fluorescent Dyes ; Fullerenes ; RNA, Ribosomal, 16S ; fullerene C60 (NP9U26B839)
    Language English
    Publishing date 2017-11-09
    Publishing country England
    Document type Journal Article
    ISSN 1477-3155
    ISSN (online) 1477-3155
    DOI 10.1186/s12951-017-0315-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Protein Ligands in the Secretome of CD36

    Jabbari, Kosar / Winkelmaier, Garrett / Andersen, Cody / Yaswen, Paul / Quilici, David / Furuta, Saori / Cheng, Qingsu / Parvin, Bahram

    Cancers

    2021  Volume 13, Issue 18

    Abstract: Reprogramming the tumor stroma is an emerging approach to circumventing the challenges of conventional cancer therapies. This strategy, however, is hampered by the lack of a specific molecular target. We previously reported that stromal fibroblasts (FBs) ...

    Abstract Reprogramming the tumor stroma is an emerging approach to circumventing the challenges of conventional cancer therapies. This strategy, however, is hampered by the lack of a specific molecular target. We previously reported that stromal fibroblasts (FBs) with high expression of CD36 could be utilized for this purpose. These studies are now expanded to identify the secreted factors responsible for tumor suppression. Methodologies included 3D colonies, fluorescent microscopy coupled with quantitative techniques, proteomics profiling, and bioinformatics analysis. The results indicated that the conditioned medium (CM) of the CD36
    Language English
    Publishing date 2021-09-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers13184521
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Overexpression of CD36 in mammary fibroblasts suppresses colony growth in breast cancer cell lines

    Cheng, Qingsu / Jabbari, Kosar / Winkelmaier, Garrett / Andersen, Cody / Yaswen, Paul / Khoshdeli, Mina / Parvin, Bahram

    Biochemical and biophysical research communications. 2020 May 21, v. 526, no. 1

    2020  

    Abstract: Human breast tumors are not fully autonomous. They are dependent on nutrients and growth-promoting signals provided by the supporting stromal cells. Within the tumor microenvironment, one of the secreted macromolecules by tumor cells is activin A, where ... ...

    Abstract Human breast tumors are not fully autonomous. They are dependent on nutrients and growth-promoting signals provided by the supporting stromal cells. Within the tumor microenvironment, one of the secreted macromolecules by tumor cells is activin A, where we show to downregulate CD36 in fibroblasts. Downregulation of CD36 in fibroblasts also increases the secretion of activin A by fibroblasts. We hypothesize that overexpression of CD36 in fibroblasts inhibits the formation of solid tumors in subtypes of breast cancer models. For the first time, we show that co-culturing organoid models of breast cancer cell lines of MDA-MB-231 (e.g., a triple-negative line) or MCF7 (e.g., a luminal-A line) with CD36⁺ fibroblasts inhibit the growth and normalizes basal and lateral polarities, respectively. In the long-term anchorage-independent growth assay, the rate of colony formation is also reduced for MDA-MB-231. These observations are consistent with the mechanism of tumor suppression involving the downregulation of pSMAD2/3 and YY1 expression levels. Our integrated analytical methods leverage and extend quantitative assays at cell- and colony-scales in both short- and long-term cultures using brightfield or immunofluorescent microscopy and robust image analysis. Conditioned media are profiled with the ELISA assay.
    Keywords breast neoplasms ; breasts ; coculture ; fibroblasts ; fluorescence microscopy ; humans ; image analysis ; neoplasm cells ; organoids ; research ; secretion
    Language English
    Dates of publication 2020-0521
    Size p. 41-47.
    Publishing place Elsevier Inc.
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 205723-2
    ISSN 0006-291X ; 0006-291X
    ISSN (online) 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2020.03.061
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: Overexpression of CD36 in mammary fibroblasts suppresses colony growth in breast cancer cell lines.

    Cheng, Qingsu / Jabbari, Kosar / Winkelmaier, Garrett / Andersen, Cody / Yaswen, Paul / Khoshdeli, Mina / Parvin, Bahram

    Biochemical and biophysical research communications

    2020  Volume 526, Issue 1, Page(s) 41–47

    Abstract: Human breast tumors are not fully autonomous. They are dependent on nutrients and growth-promoting signals provided by the supporting stromal cells. Within the tumor microenvironment, one of the secreted macromolecules by tumor cells is activin A, where ... ...

    Abstract Human breast tumors are not fully autonomous. They are dependent on nutrients and growth-promoting signals provided by the supporting stromal cells. Within the tumor microenvironment, one of the secreted macromolecules by tumor cells is activin A, where we show to downregulate CD36 in fibroblasts. Downregulation of CD36 in fibroblasts also increases the secretion of activin A by fibroblasts. We hypothesize that overexpression of CD36 in fibroblasts inhibits the formation of solid tumors in subtypes of breast cancer models. For the first time, we show that co-culturing organoid models of breast cancer cell lines of MDA-MB-231 (e.g., a triple-negative line) or MCF7 (e.g., a luminal-A line) with CD36
    MeSH term(s) Activins/pharmacology ; Breast Neoplasms/metabolism ; Breast Neoplasms/pathology ; CD36 Antigens/metabolism ; Cell Line, Tumor ; Cell Polarity/drug effects ; Cell Proliferation/drug effects ; Cells, Cultured ; Down-Regulation/drug effects ; Female ; Fibroblasts/drug effects ; Fibroblasts/metabolism ; Fibroblasts/pathology ; Humans ; Mammary Glands, Human/pathology ; Phosphorylation/drug effects ; Smad Proteins/metabolism ; Tumor Stem Cell Assay ; YY1 Transcription Factor/metabolism
    Chemical Substances CD36 Antigens ; Smad Proteins ; YY1 Transcription Factor ; activin A ; Activins (104625-48-1)
    Language English
    Publishing date 2020-03-16
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 205723-2
    ISSN 1090-2104 ; 0006-291X ; 0006-291X
    ISSN (online) 1090-2104 ; 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2020.03.061
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Modulation of Inflammatory Response and Induction of Bone Formation Based on Combinatorial Effects of Resveratrol.

    Rutledge, Katy E / Cheng, Qingsu / Jabbarzadeh, Ehsan

    Journal of nanomedicine & nanotechnology

    2016  Volume 7, Issue 1

    Abstract: The success of bone tissue engineering strategies critically depends on the rapid formation of a mature vascular network in the scaffolds after implantation. Conventional methods to accelerate the infiltration of host vasculature into the scaffolds need ... ...

    Abstract The success of bone tissue engineering strategies critically depends on the rapid formation of a mature vascular network in the scaffolds after implantation. Conventional methods to accelerate the infiltration of host vasculature into the scaffolds need to consider the role of host response in regulation of bone tissue ingrowth and extent of vascularization. The long term goal of this study was to harness the potential of inflammatory response to enhance angiogenesis and bone formation in three dimensional (3D) scaffolds. Towards this goal, we explored the use of resveratrol, a natural compound commonly used in complementary medicine, to enable the concurrently (i) mediate M1 to M2 macrophage plasticity, (ii) impart natural release of angiogenic factors by macrophages and (iii) enhance osteogenic differentiation of human mesenchymal stem cells (hMSCs). We mapped the time-dependent response of macrophage gene expression as well as hMSC osteogenic differentiation to varying doses of resveratrol. The utility of this approach was evaluated in 3D poly (lactide-co-glycolide) (PLGA) sintered microsphere scaffolds for bone tissue engineering applications. Our results altogether delineate the potential to synergistically accelerate angiogenic factor release and upregulate osteogenic signaling pathways by "dialing" the appropriate degree of resveratrol release.
    Language English
    Publishing date 2016-01-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2712002-8
    ISSN 2157-7439
    ISSN 2157-7439
    DOI 10.4172/2157-7439.1000350
    Database MEDical Literature Analysis and Retrieval System OnLINE

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