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  1. Article ; Online: Caspase-4 Mediates Restriction of Burkholderia pseudomallei in Human Alveolar Epithelial Cells.

    Srisaowakarn, Chanya / Pudla, Matsayapan / Ponpuak, Marisa / Utaisincharoen, Pongsak

    Infection and immunity

    2020  Volume 88, Issue 3

    Abstract: Melioidosis is an infectious disease with a high mortality rate responsible for community-acquired sepsis in Southeast Asia and Northern Australia. The causative agent of this disease ... ...

    Abstract Melioidosis is an infectious disease with a high mortality rate responsible for community-acquired sepsis in Southeast Asia and Northern Australia. The causative agent of this disease is
    MeSH term(s) Alveolar Epithelial Cells/physiology ; Animals ; Burkholderia pseudomallei/pathogenicity ; Burkholderia pseudomallei/physiology ; Caspases, Initiator/physiology ; Melioidosis/immunology ; Melioidosis/microbiology ; Mice
    Chemical Substances CASP4 protein, human (EC 3.4.22.-) ; Caspases, Initiator (EC 3.4.22.-)
    Language English
    Publishing date 2020-02-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218698-6
    ISSN 1098-5522 ; 0019-9567
    ISSN (online) 1098-5522
    ISSN 0019-9567
    DOI 10.1128/IAI.00868-19
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Deficit of female sex hormones desensitizes rat cardiac mitophagy.

    Kampaengsri, Theerachat / Ponpuak, Marisa / Wattanapermpool, Jonggonnee / Bupha-Intr, Tepmanas

    The Chinese journal of physiology

    2021  Volume 64, Issue 2, Page(s) 72–79

    Abstract: Long-term deprivation of female sex hormones has been shown to mediate accumulation of damaged mitochondria in ventricular muscle leading to cardiovascular dysfunction. Therefore, the roles of female sex hormones in mitochondrial quality control are ... ...

    Abstract Long-term deprivation of female sex hormones has been shown to mediate accumulation of damaged mitochondria in ventricular muscle leading to cardiovascular dysfunction. Therefore, the roles of female sex hormones in mitochondrial quality control are closely focused. In the present study, depletion of female sex hormones impairing mitochondrial autophagy in the heart was hypothesized. Cardiac mitophagy was therefore investigated in the heart of 10-week ovariectomized (OVX) and sham-operated (SHAM) rats. By using isolated mitochondria preparation, results demonstrated an increase in mitochondrial PTEN-induced kinase 1 accumulation in the sample of OVX rats indicating mitochondrial outer membrane dysfunction. However, no change in p62 and LC3-II translocation to mitochondria was observed between two groups indicating unresponsiveness of mitophagosome formation in the OVX rat heart. This loss might be resulted from significant decreases in Parkin and Bcl2l13 expression, but not Bnip3 activation. In summary, results suggest that mitochondrial abnormality in the heart after deprivation of female sex hormones could consequently be due to desensitization of mitophagy process.
    MeSH term(s) Animals ; Autophagy ; Female ; Gonadal Steroid Hormones ; Heart ; Mitochondria ; Mitophagy ; Rats
    Chemical Substances Gonadal Steroid Hormones
    Language English
    Publishing date 2021-05-03
    Publishing country India
    Document type Journal Article
    ZDB-ID 966112-8
    ISSN 0304-4920 ; 0300-8525
    ISSN 0304-4920 ; 0300-8525
    DOI 10.4103/cjp.cjp_102_20
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: TLR9 Negatively Regulates Intracellular Bacterial Killing by Pyroptosis in Burkholderia pseudomallei

    Pudla, Matsayapan / Sanongkiet, Sucharat / Ekchariyawat, Peeraya / Luangjindarat, Chularat / Ponpuak, Marisa / Utaisincharoen, Pongsak

    Microbiology spectrum

    2022  Volume 10, Issue 5, Page(s) e0348822

    Abstract: Melioidosis is a serious infectious disease caused by Burkholderia pseudomallei. This bacterium is able to survive and multiply inside the immune cells such as macrophages. It is well established that Toll-like receptors (TLRs), particularly surface TLRs ...

    Abstract Melioidosis is a serious infectious disease caused by Burkholderia pseudomallei. This bacterium is able to survive and multiply inside the immune cells such as macrophages. It is well established that Toll-like receptors (TLRs), particularly surface TLRs such as TLR2, TLR4, and TLR5, play an essential role in defending against this bacterial infection. However, the involvement of endosomal TLRs in the infection has not been elucidated. In this study, we demonstrated that the number of intracellular bacteria is reduced in TLR9-depleted RAW264.7 cells infected with B. pseudomallei, suggesting that TLR9 is involved in intracellular bacterial killing in macrophages. As several reports have previously demonstrated that pyroptosis is essential for restricting intracellular bacterial killing, particularly in B. pseudomallei infection, we also observed an increased release of cytosolic enzyme lactate dehydrogenase (LDH) in TLR9-depleted cells infected with B. pseudomallei, suggesting TLR9 involvement in pyroptosis in this context. Consistently, the increases in caspase-11 and gasdermind D (GSDMD) activations, which are responsible for the LDH release, were also detected. Moreover, we demonstrated that the increases in pyroptosis and bacterial killing in B. pseudomallei
    MeSH term(s) Mice ; Animals ; Burkholderia pseudomallei/metabolism ; Toll-Like Receptor 9/metabolism ; Toll-Like Receptor 2/metabolism ; Pyroptosis ; Toll-Like Receptor 4/metabolism ; Toll-Like Receptor 5/metabolism ; Melioidosis/metabolism ; Melioidosis/microbiology ; Macrophages ; Cell Line ; Toll-Like Receptors/genetics ; Toll-Like Receptors/metabolism ; Cytokines/metabolism ; Caspases/metabolism ; Lactate Dehydrogenases/metabolism
    Chemical Substances Toll-Like Receptor 9 ; Toll-Like Receptor 2 ; Toll-Like Receptor 4 ; Toll-Like Receptor 5 ; Toll-Like Receptors ; Cytokines ; Caspases (EC 3.4.22.-) ; Lactate Dehydrogenases (EC 1.1.-) ; Tlr9 protein, mouse
    Language English
    Publishing date 2022-10-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2807133-5
    ISSN 2165-0497 ; 2165-0497
    ISSN (online) 2165-0497
    ISSN 2165-0497
    DOI 10.1128/spectrum.03488-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: BORC complex specific components and Kinesin-1 mediate autophagy evasion by the autophagy-resistant Mycobacterium tuberculosis Beijing strain.

    Tunganuntarat, Janpen / Kanjanasirirat, Phongthon / Khumpanied, Tanawadee / Benjaskulluecha, Salisa / Wongprom, Benjawan / Palaga, Tanapat / Siregar, Tegar Adriansyah Putra / Borwornpinyo, Suparerk / Chaiprasert, Angkana / Palittapongarnpim, Prasit / Ponpuak, Marisa

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 1663

    Abstract: Autophagy induction by starvation has been shown to enhance lysosomal delivery to mycobacterial phagosomes, resulting in the restriction of the Mycobacterium tuberculosis reference strain H37Rv. In contrast to H37Rv, our previous study showed that ... ...

    Abstract Autophagy induction by starvation has been shown to enhance lysosomal delivery to mycobacterial phagosomes, resulting in the restriction of the Mycobacterium tuberculosis reference strain H37Rv. In contrast to H37Rv, our previous study showed that strains belonging to the notorious M. tuberculosis Beijing genotype could evade autophagic elimination. Our recent RNA-Seq analysis also discovered that the autophagy-resistant M. tuberculosis Beijing strain (BJN) evaded autophagic control by upregulating the expression of Kxd1, a BORC complex component, and Plekhm2, both of which function in lysosome positioning towards the cell periphery in host macrophages, thereby suppressing enhanced lysosomal delivery to its phagosome and sparing the BJN from elimination as a result. In this work, we further characterised the other specific components of the BORC complex, BORC5-8, and Kinesin proteins in autophagy resistance by the BJN. Depletion of BORCS5-8 and Kinesin-1, but not Kinesin-3, reverted autophagy avoidance by the BJN, resulting in increased lysosomal delivery to the BJN phagosomes. In addition, the augmented lysosome relocation towards the perinuclear region could now be observed in the BJN-infected host cells depleted in BORCS5-8 and Kinesin-1 expressions. Taken together, the data uncovered new roles for BORCS5-8 and Kinesin-1 in autophagy evasion by the BJN.
    MeSH term(s) Humans ; Autophagy/genetics ; Autophagy/immunology ; Beijing ; Carrier Proteins/genetics ; Carrier Proteins/immunology ; Kinesins/genetics ; Kinesins/immunology ; Mycobacterium tuberculosis/genetics ; Mycobacterium tuberculosis/immunology ; Tuberculosis/genetics ; Tuberculosis/immunology ; Macrophages/immunology
    Chemical Substances Carrier Proteins ; Kinesins (EC 3.6.4.4) ; KXD1 protein, human
    Language English
    Publishing date 2023-01-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-28983-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Novel Potent Autophagy Inhibitor Ka-003 Inhibits Dengue Virus Replication.

    Limthongkul, Jitra / Akkarasereenon, Kornkamon / Yodweerapong, Tanpitcha / Songthammawat, Poramate / Tong-Ngam, Pirut / Tubsuwan, Alisa / Kunkaew, Nawapol / Kanjanasirirat, Phongthon / Khumpanied, Tanawadee / Wannalo, Warawuth / Ubol, Sukathida / Borwornpinyo, Suparerk / Ploypradith, Poonsakdi / Ponpuak, Marisa

    Viruses

    2023  Volume 15, Issue 10

    Abstract: Every year, dengue virus (DENV) affects millions of people. Currently, there are no approved drugs for the treatment of DENV infection. Autophagy is a conserved degradation process that was shown to be induced by DENV infection and required for optimal ... ...

    Abstract Every year, dengue virus (DENV) affects millions of people. Currently, there are no approved drugs for the treatment of DENV infection. Autophagy is a conserved degradation process that was shown to be induced by DENV infection and required for optimal DENV replication. The modulation of autophagy is, therefore, considered an attractive target to treat DENV infection. This study carried out a high-content image screen analysis using Crispr-Cas9 GFP-LC3 knocked-in HeLa cells of a compound library synthesized from or inspired by natural products and their biocongener precursors to discover novel autophagy inhibitors. The screen identified Ka-003 as the most effective compound for decreasing the number of autophagic vacuoles inside cells upon autophagy induction. Ka-003 could inhibit autophagy in a dose-dependent manner at low micromolar concentrations. More importantly, Ka-003 demonstrated the concentration-dependent inhibition of DENV production in Crispr-Cas9 GFP-LC3 knocked-in THP-1 monocytes. The core structure of Ka-003, which is a methyl cyclohexene derivative, resembles those found in mulberry plants, and could be synthetically prepared in a bioinspired fashion. Taken together, data indicate that Ka-003 hampered autophagy and limited DENV replication. The low cytotoxicity of Ka-003 suggests its therapeutic potential, which warrants further studies for the lead optimization of the compound for dengue treatment.
    MeSH term(s) Humans ; Dengue Virus/physiology ; HeLa Cells ; Autophagy/physiology ; Dengue ; Virus Replication
    Language English
    Publishing date 2023-09-27
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15102012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: ECDD-S16 targets vacuolar ATPase: A potential inhibitor compound for pyroptosis-induced inflammation.

    Ekchariyawat, Peeraya / Saengfak, Rattatammanoon / Sanongkiet, Sucharat / Charoenwongpaiboon, Thanapon / Khongpraphan, Suphasuta / Mala, Supaporn / Luangjindarat, Chularat / Munyoo, Bumrung / Chabang, Napason / Charoensutthivarakul, Sitthivut / Borwornpinyo, Suparerk / Tuchinda, Patoomratana / Ponpuak, Marisa / Pudla, Matsayapan / Utaisincharoen, Pongsak

    PloS one

    2023  Volume 18, Issue 11, Page(s) e0292340

    Abstract: Background: Cleistanthin A (CA), extracted from Phyllanthus taxodiifolius Beille, was previously reported as a potential V-ATPase inhibitor relevant to cancer cell survival. In the present study, ECDD-S16, a derivative of cleistanthin A, was ... ...

    Abstract Background: Cleistanthin A (CA), extracted from Phyllanthus taxodiifolius Beille, was previously reported as a potential V-ATPase inhibitor relevant to cancer cell survival. In the present study, ECDD-S16, a derivative of cleistanthin A, was investigated and found to interfere with pyroptosis induction via V-ATPase inhibition.
    Objective: This study examined the ability of ECDD-S16 to inhibit endolysosome acidification leading to the attenuation of pyroptosis in Raw264.7 macrophages activated by both surface and endosomal TLR ligands.
    Methods: To elucidate the activity of ECDD-S16 on pyroptosis-induced inflammation, Raw264.7 cells were pretreated with the compound before stimulation with surface and endosomal TLR ligands. The release of lactate dehydrogenase (LDH) was determined by LDH assay. Additionally, the production of cytokines and the expression of pyroptosis markers were examined by ELISA and immunoblotting. Moreover, molecular docking was performed to demonstrate the binding of ECDD-S16 to the vacuolar (V-)ATPase.
    Results: This study showed that ECDD-S16 could inhibit pyroptosis in Raw264.7 cells activated with surface and endosomal TLR ligands. The attenuation of pyroptosis by ECDD-S16 was due to the impairment of endosome acidification, which also led to decreased Reactive Oxygen Species (ROS) production. Furthermore, molecular docking also showed the possibility of inhibiting endosome acidification by the binding of ECDD-S16 to the vacuolar (V-)ATPase in the region of V0.
    Conclusion: Our findings indicate the potential of ECDD-S16 for inhibiting pyroptosis and prove that vacuolar H+ ATPase is essential for pyroptosis induced by TLR ligands.
    MeSH term(s) Humans ; Vacuolar Proton-Translocating ATPases/metabolism ; Pyroptosis ; Molecular Docking Simulation ; Inflammation
    Chemical Substances Vacuolar Proton-Translocating ATPases (EC 3.6.1.-) ; cleistanthin (25047-48-7)
    Language English
    Publishing date 2023-11-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0292340
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Therapeutic Implications of Ceritinib in Cholangiocarcinoma beyond ALK Expression and Mutation.

    Myint, Kyaw Zwar / Balasubramanian, Brinda / Venkatraman, Simran / Phimsen, Suchada / Sripramote, Supisara / Jantra, Jeranan / Choeiphuk, Chaiwat / Mingphruedhi, Somkit / Muangkaew, Paramin / Rungsakulkij, Narongsak / Tangtawee, Pongsatorn / Suragul, Wikran / Farquharson, Watoo Vassanasiri / Wongprasert, Kanokpan / Chutipongtanate, Somchai / Sanvarinda, Pimtip / Ponpuak, Marisa / Poungvarin, Naravat / Janvilisri, Tavan /
    Suthiphongchai, Tuangporn / Yacqub-Usman, Kiren / Grabowska, Anna M / Bates, David O / Tohtong, Rutaiwan

    Pharmaceuticals (Basel, Switzerland)

    2024  Volume 17, Issue 2

    Abstract: Cholangiocarcinoma (CCA) is a difficult-to-treat cancer, with limited therapeutic options and surgery being the only curative treatment. Standard chemotherapy involves gemcitabine-based therapies combined with cisplatin, oxaliplatin, capecitabine, or 5- ... ...

    Abstract Cholangiocarcinoma (CCA) is a difficult-to-treat cancer, with limited therapeutic options and surgery being the only curative treatment. Standard chemotherapy involves gemcitabine-based therapies combined with cisplatin, oxaliplatin, capecitabine, or 5-FU with a dismal prognosis for most patients. Receptor tyrosine kinases (RTKs) are aberrantly expressed in CCAs encompassing potential therapeutic opportunity. Hence, 112 RTK inhibitors were screened in KKU-M213 cells, and ceritinib, an approved targeted therapy for ALK-fusion gene driven cancers, was the most potent candidate. Ceritinib's cytotoxicity in CCA was assessed using MTT and clonogenic assays, along with immunofluorescence, western blot, and qRT-PCR techniques to analyze gene expression and signaling changes. Furthermore, the drug interaction relationship between ceritinib and cisplatin was determined using a ZIP synergy score. Additionally, spheroid and xenograft models were employed to investigate the efficacy of ceritinib in vivo. Our study revealed that ceritinib effectively killed CCA cells at clinically relevant plasma concentrations, irrespective of ALK expression or mutation status. Ceritinib modulated multiple signaling pathways leading to the inhibition of the PI3K/Akt/mTOR pathway and activated both apoptosis and autophagy. Additionally, ceritinib and cisplatin synergistically reduced CCA cell viability. Our data show ceritinib as an effective treatment of CCA, which could be potentially explored in the other cancer types without ALK mutations.
    Language English
    Publishing date 2024-02-02
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2193542-7
    ISSN 1424-8247
    ISSN 1424-8247
    DOI 10.3390/ph17020197
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Synthesis of synthetic mannan backbone polysaccharides found on the surface of Mycobacterium tuberculosis as a vaccine adjuvant and their immunological properties.

    Wattanasiri, Chakree / Paha, Jiraporn / Ponpuak, Marisa / Ruchirawat, Somsak / Boonyarattanakalin, Siwarutt

    Carbohydrate polymers

    2017  Volume 175, Page(s) 746–755

    Abstract: Surface components of Mycobacterium tuberculosis (Mtb) play crucial roles in modulating host immune responses. Thorough understandings of immunological properties of the Mtb's surface components are essential for the development of tuberculosis treatment ...

    Abstract Surface components of Mycobacterium tuberculosis (Mtb) play crucial roles in modulating host immune responses. Thorough understandings of immunological properties of the Mtb's surface components are essential for the development of tuberculosis treatment and prevention. Unfortunately, the accessibility to the molecules on the surface of Mtb is limited by the structural complexity due to their various macromolecular nature and the hazard of culturing Mtb. In this study, we reveal a practical synthesis of lipomannan (LM) backbone polysaccharides - the core glycans found on Mtb's surface. A rapid synthetic approach based on a controlled polymerization was developed for the chemical synthesis of mannopyranans, the core structure of LM. The size of the LM glycans can be controlled by using specific monomer concentrations in addition to stereo- and regioselectivity derived from the versatile tricyclic orthoester mannose monomer. The immunological properties of the synthesized mannopyranans were investigated and their adjuvant potential was revealed. The adjuvanticity mechanism of the synthetic mannopyranans appears to involve the NF-κB and inflammasome pathways.
    MeSH term(s) Adjuvants, Immunologic/chemical synthesis ; Animals ; Cytokines/metabolism ; Lipopolysaccharides/chemical synthesis ; Lipopolysaccharides/immunology ; Mice ; Mycobacterium tuberculosis/chemistry ; Polysaccharides, Bacterial/chemical synthesis ; Polysaccharides, Bacterial/immunology ; RAW 264.7 Cells ; Vaccines
    Chemical Substances Adjuvants, Immunologic ; Cytokines ; Lipopolysaccharides ; Polysaccharides, Bacterial ; Vaccines ; lipomannan
    Language English
    Publishing date 2017-11-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2017.07.045
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The autophagy-resistant Mycobacterium tuberculosis Beijing strain upregulates KatG to evade starvation-induced autophagic restriction.

    Siregar, Tegar Adriansyah Putra / Prombutara, Pinidphon / Kanjanasirirat, Phongthon / Kunkaew, Nawapol / Tubsuwan, Alisa / Boonmee, Atsadang / Palaga, Tanapat / Khumpanied, Tanawadee / Borwornpinyo, Suparerk / Chaiprasert, Angkana / Utaisincharoen, Pongsak / Ponpuak, Marisa

    Pathogens and disease

    2022  Volume 80, Issue 1

    Abstract: Mycobacterium tuberculosis utilizes several mechanisms to block phagosome-lysosome fusion to evade host cell restriction. However, induction of host cell autophagy by starvation was shown to overcome this block, resulting in enhanced lysosomal delivery ... ...

    Abstract Mycobacterium tuberculosis utilizes several mechanisms to block phagosome-lysosome fusion to evade host cell restriction. However, induction of host cell autophagy by starvation was shown to overcome this block, resulting in enhanced lysosomal delivery to mycobacterial phagosomes and the killing of the M. tuberculosis reference strain H37Rv. Nevertheless, our previous studies found that strains belonging to the M. tuberculosis Beijing genotype can resist starvation-induced autophagic elimination, though the mycobacterial factors involved remain unclear. In this study, we showed that KatG expression is upregulated in the autophagy-resistant M. tuberculosis Beijing strain (BJN) during autophagy induction by the starvation of host macrophages, while such increase was not observed in the H37Rv. KatG depletion using the CRISPR-dCas9 interference system in the BJN resulted in increased lysosomal delivery to its phagosome and decreased its survival upon autophagy induction by starvation. As KatG functions by catabolizing ROS, we determined the source of ROS contributing to the starvation-induced autophagic elimination of mycobacteria. Using siRNA-mediated knockdown, we found that Superoxide dismutase 2, which generates mitochondrial ROS but not NADPH oxidase 2, is important for the starvation-induced lysosomal delivery to mycobacterial phagosomes. Taken together, these findings showed that KatG is vital for the BJN to evade starvation-induced autophagic restriction.
    MeSH term(s) Autophagy/genetics ; Beijing ; Lysosomes/microbiology ; Mycobacterium tuberculosis/genetics ; Phagosomes/metabolism
    Language English
    Publishing date 2022-01-17
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2049-632X
    ISSN (online) 2049-632X
    DOI 10.1093/femspd/ftac004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Host cell transcriptomic response to the multidrug-resistant <i>Mycobacterium tuberculosis</i> clonal outbreak Beijing strain reveals its pathogenic features.

    Prombutara, Pinidphon / Adriansyah Putra Siregar, Tegar / Laopanupong, Thanida / Kanjanasirirat, Phongthon / Khumpanied, Tanawadee / Borwornpinyo, Suparerk / Rai, Awantika / Chaiprasert, Angkana / Palittapongarnpim, Prasit / Ponpuak, Marisa

    Virulence

    2022  Volume 13, Issue 1, Page(s) 1810–1826

    Abstract: The upsurge of multidrug-resistant infections has rendered tuberculosis the principal cause of death among infectious diseases. A clonal outbreak multidrug-resistant triggering strain of ... Mycobacterium tuberculosis ... was identified in Kanchanaburi ... ...

    Abstract The upsurge of multidrug-resistant infections has rendered tuberculosis the principal cause of death among infectious diseases. A clonal outbreak multidrug-resistant triggering strain of Mycobacterium tuberculosis was identified in Kanchanaburi Province, labelled "MKR superspreader," which was found to subsequently spread to other regions, as revealed by prior epidemiological reports in Thailand. Herein, we showed that the MKR displayed a higher growth rate upon infection into host macrophages in comparison with the H37Rv reference strain. To further elucidate MKR's biology, we utilized RNA-Seq and differential gene expression analyses to identify host factors involved in the intracellular viability of the MKR. A set of host genes function in the cellular response to lipid pathway was found to be uniquely up-regulated in host macrophages infected with the MKR, but not those infected with H37Rv. Within this set of genes, the IL-36 cytokines which regulate host cell cholesterol metabolism and resistance against mycobacteria attracted our interest, as our previous study revealed that the MKR elevated genes associated with cholesterol breakdown during its growth inside host macrophages. Indeed, when comparing macrophages infected with the MKR to H37Rv-infected cells, our RNA-Seq data showed that the expression ratio of IL-36RN, the negative regulator of the IL-36 pathway, to that of IL-36G was greater in macrophages infected with the MKR. Furthermore, the MKR's intracellular survival and increased intracellular cholesterol level in the MKR-infected macrophages were diminished with decreased IL-36RN expression. Overall, our results indicated that IL-36RN could serve as a new target against this emerging multidrug-resistant M. tuberculosis strain.
    MeSH term(s) Beijing ; Cholesterol ; Cytokines/genetics ; Disease Outbreaks ; Humans ; Lipids ; Mycobacterium tuberculosis/genetics ; Thailand ; Transcriptome ; Tuberculosis/microbiology ; Tuberculosis, Multidrug-Resistant/epidemiology
    Chemical Substances Cytokines ; Lipids ; Cholesterol (97C5T2UQ7J)
    Language English
    Publishing date 2022-10-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2657572-3
    ISSN 2150-5608 ; 2150-5594
    ISSN (online) 2150-5608
    ISSN 2150-5594
    DOI 10.1080/21505594.2022.2135268
    Database MEDical Literature Analysis and Retrieval System OnLINE

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