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Dutta N, Gerke JA, Odron SF, Morris JD, Hruby A, Kim J, Torres TC, Shemtov SJ, Clarke JG, Chang MC, Shaghasi H, Ray MN, Averbukh M, Hoang S, Oorloff M, Alcala A, Vega M, Mehta HH, Thorwald MA, Crews P, Vermulst M, Garcia G, Johnson TA, Higuchi-Sanabria R. Investigating impacts of the mycothiazole chemotype as a chemical probe for the study of mitochondrial function and aging. GeroScience 2024:10.1007/s11357-024-01144-w. [PMID: 38570396 DOI: 10.1007/s11357-024-01144-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 03/16/2024] [Indexed: 04/05/2024] Open
Abstract
Small molecule inhibitors of the mitochondrial electron transport chain (ETC) hold significant promise to provide valuable insights to the field of mitochondrial research and aging biology. In this study, we investigated two molecules: mycothiazole (MTZ) - from the marine sponge C. mycofijiensis and its more stable semisynthetic analog 8-O-acetylmycothiazole (8-OAc) as potent and selective chemical probes based on their high efficiency to inhibit ETC complex I function. Similar to rotenone (Rote), MTZ, a newly employed ETC complex I inhibitor, exhibited higher cytotoxicity against cancer cell lines compared to certain non-cancer cell lines. Interestingly, 8-OAc demonstrated greater selectivity for cancer cells when compared to both MTZ and Rote, which has promising potential for anticancer therapeutic development. Furthermore, in vivo experiments with these small molecules utilizing a C. elegans model demonstrate their unexplored potential to investigate aging studies. We observed that both molecules have the ability to induce a mitochondria-specific unfolded protein response (UPRMT) pathway, that extends lifespan of worms when applied in their adult stage. We also found that these two molecules employ different pathways to extend lifespan in worms. Whereas MTZ utilizes the transcription factors ATFS-1 and HSF1, which are involved in the UPRMT and heat shock response (HSR) pathways respectively, 8-OAc only required HSF1 and not ATFS-1 to mediate its effects. This observation underscores the value of applying stable, potent, and selective next generation chemical probes to elucidate an important insight into the functional roles of various protein subunits of ETC complexes and their regulatory mechanisms associated with aging.
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Affiliation(s)
- Naibedya Dutta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Joe A Gerke
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA
| | - Sofia F Odron
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA
| | - Joseph D Morris
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA
| | - Adam Hruby
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Juri Kim
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Toni Castro Torres
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Sarah J Shemtov
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Jacqueline G Clarke
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA
| | - Michelle C Chang
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA
| | - Hooriya Shaghasi
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA
| | - Marissa N Ray
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA
| | - Maxim Averbukh
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Sally Hoang
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Maria Oorloff
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Athena Alcala
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Matthew Vega
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Hemal H Mehta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Max A Thorwald
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Phillip Crews
- Department of Chemistry & Biochemistry, University of California, Santa Cruz, Santa Cruz, CA, 95064, USA
| | - Marc Vermulst
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Gilberto Garcia
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA
| | - Tyler A Johnson
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA, 94901, USA.
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, 90089, USA.
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Dutta N, Gerke JA, Odron SF, Morris JD, Hruby A, Castro Torres T, Shemtov SJ, Clarke JG, Chang MC, Shaghasi H, Ray MN, Averbukh M, Hoang S, Oorloff M, Alcala A, Vega M, Mehta HH, Thorwald MA, Crews P, Vermulst M, Garcia G, Johnson TA, Higuchi-Sanabria R. Investigating impacts of marine sponge derived mycothiazole and its acetylated derivative on mitochondrial function and aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.27.568896. [PMID: 38077060 PMCID: PMC10705228 DOI: 10.1101/2023.11.27.568896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Small molecule inhibitors of the mitochondrial electron transport chain (ETC) hold significant promise to provide valuable insights to the field of mitochondrial research and aging biology. In this study, we investigated two molecules: mycothiazole (MTZ) - from the marine sponge C. mycofijiensis and its more stable semisynthetic analog 8-O-acetylmycothiazole (8-OAc) as potent and selective chemical probes based on their high efficiency to inhibit ETC complex I function. Similar to rotenone (Rote), a widely used ETC complex I inhibitor, these two molecules showed cytotoxicity to cancer cells but strikingly demonstrate a lack of toxicity to non-cancer cells, a highly beneficial feature in the development of anti-cancer therapeutics. Furthermore, in vivo experiments with these small molecules utilizing C.elegans model demonstrate their unexplored potential to investigate aging studies. We observed that both molecules have the ability to induce a mitochondria-specific unfolded protein response (UPRMT) pathway, that extends lifespan of worms when applied in their adult stage. Interestingly, we also found that these two molecules employ different pathways to extend lifespan in worms. Whereas MTZ utilize the transcription factors ATFS-1 and HSF-1, which are involved in the UPRMT and heat shock response (HSR) pathways respectively, 8-OAc only required HSF-1 and not ATFS-1 to mediate its effects. This observation underscores the value of applying stable, potent, and selective next generation chemical probes to elucidate an important insight into the functional roles of various protein subunits of ETC complexes and their regulatory mechanisms associated with aging.
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Affiliation(s)
- Naibedya Dutta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Joe A Gerke
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Sofia F Odron
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Joseph D Morris
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Adam Hruby
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Toni Castro Torres
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Sarah J Shemtov
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Jacqueline G Clarke
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Michelle C Chang
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Hooriya Shaghasi
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Marissa N. Ray
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Maxim Averbukh
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Sally Hoang
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Maria Oorloff
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Athena Alcala
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Matthew Vega
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Hemal H Mehta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Max A Thorwald
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Phillip Crews
- Department of Chemistry & Biochemistry, University of California, Santa Cruz, Santa Cruz, CA, 95064, United States
| | - Marc Vermulst
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Gilberto Garcia
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Tyler A Johnson
- Department of Natural Sciences & Mathematics, Dominican University of California, San Rafael, CA 94901, United States
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
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Salim AA, Butler MS, Blaskovich MAT, Henderson IR, Capon RJ. Natural products as anthelmintics: safeguarding animal health. Nat Prod Rep 2023; 40:1754-1808. [PMID: 37555325 DOI: 10.1039/d3np00019b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Covering literature to December 2022This review provides a comprehensive account of all natural products (500 compounds, including 17 semi-synthetic derivatives) described in the primary literature up to December 2022, reported to be capable of inhibiting the egg hatching, motility, larval development and/or the survival of helminths (i.e., nematodes, flukes and tapeworms). These parasitic worms infect and compromise the health and welfare, productivity and lives of commercial livestock (i.e., sheep, cattle, horses, pigs, poultry and fish), companion animals (i.e., dogs and cats) and other high value, endangered and/or exotic animals. Attention is given to chemical structures, as well as source organisms and anthelmintic properties, including the nature of bioassay target species, in vivo animal hosts, and measures of potency.
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Affiliation(s)
- Angela A Salim
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Mark S Butler
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Mark A T Blaskovich
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Ian R Henderson
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Robert J Capon
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
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In Vivo Evaluation of (-)-Zampanolide Demonstrates Potent and Persistent Antitumor Efficacy When Targeted to the Tumor Site. Molecules 2022; 27:molecules27134244. [PMID: 35807495 PMCID: PMC9268097 DOI: 10.3390/molecules27134244] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 01/27/2023] Open
Abstract
Microtubule-stabilizing agents (MSAs) are a class of compounds used in the treatment of triple-negative breast cancer (TNBC), a subtype of breast cancer where chemotherapy remains the standard-of-care for patients. Taxanes like paclitaxel and docetaxel have demonstrated efficacy against TNBC in the clinic, however new classes of MSAs need to be identified due to the rise of taxane resistance in patients. (−)-Zampanolide is a covalent microtubule stabilizer that can circumvent taxane resistance in vitro but has not been evaluated for in vivo antitumor efficacy. Here, we determine that (−)-zampanolide has similar potency and efficacy to paclitaxel in TNBC cell lines, but is significantly more persistent due to its covalent binding. We also provide the first reported in vivo antitumor evaluation of (−)-zampanolide where we determine that it has potent and persistent antitumor efficacy when delivered intratumorally. Future work on zampanolide to further evaluate its pharmacophore and determine ways to improve its systemic therapeutic window would make this compound a potential candidate for clinical development through its ability to circumvent taxane-resistance mechanisms.
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Morris J, Takahashi-Ruiz L, Persi LN, Summers JC, McCauley EP, Chan PYW, Amberchan G, Lizama-Chamu I, Coppage DA, Crews P, Risinger AL, Johnson TA. Re-evaluation of the Fijianolide/Laulimalide Chemotype Suggests an Alternate Mechanism of Action for C-15/C-20 Analogs. ACS OMEGA 2022; 7:8824-8832. [PMID: 35309480 PMCID: PMC8928504 DOI: 10.1021/acsomega.1c07146] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Herein, we report on naturally derived microtubule stabilizers with activity against triple negative breast cancer (TNBC) cell lines, including paclitaxel, fijianolide B/laulimalide (3), fijianolide B di-acetate (4), and two new semisynthetic analogs of 3, which include fijianolide J (5) and fijianolide L (6). Similar to paclitaxel, compound 3 demonstrated classic microtubule stabilizing activity with potent (GI50 = 0.7-17 nM) antiproliferative efficacy among the five molecularly distinct TNBC cell lines. Alternatively, compounds 5 or 6, generated from oxidation of C-20 or C-15 and C-20 respectively, resulted in a unique profile with reduced potency (GI50 = 4-9 μM), but improved efficacy in some lines, suggesting a distinct mechanism of action. The C-15, C-20 di-acetate, and dioxo modifications on 4 and 6 resulted in compounds devoid of classic microtubule stabilizing activity in biochemical assays. While 4 also had no detectable effect on cellular microtubules, 6 promoted a reorganization of the cytoskeleton resulting in an accumulation of microtubules at the cell periphery. Compound 5, with a single C-20 oxo substitution, displayed a mixed phenotype, sharing properties of 3 and 6. These results demonstrate the importance of the C-15/C-20 chiral centers, which appear to be required for the potent microtubule stabilizing activity of this chemotype and that oxidation of these sites promotes unanticipated cytoskeletal alterations that are distinct from classic microtubule stabilization, likely through a distinct mechanism of action.
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Affiliation(s)
- Joseph
D. Morris
- Department
of Natural Sciences, Dominican University
of California, San Rafael, California 94901, United States
| | - Leila Takahashi-Ruiz
- Department
of Pharmacology, University of Texas Health
Science Center at San Antonio, San Antonio, Texas 78229, United States
| | - Lauren N. Persi
- Department
of Natural Sciences, Dominican University
of California, San Rafael, California 94901, United States
| | - Jonathan C. Summers
- Department
of Natural Sciences, Dominican University
of California, San Rafael, California 94901, United States
| | - Erin P. McCauley
- Department
of Chemistry & Biochemistry, University
of California, Santa Cruz, California 95064, United States
| | - Peter Y. W. Chan
- Department
of Pharmacology, University of Texas Health
Science Center at San Antonio, San Antonio, Texas 78229, United States
| | - Gabriella Amberchan
- Department
of Chemistry & Biochemistry, University
of California, Santa Cruz, California 95064, United States
| | - Itzel Lizama-Chamu
- Department
of Chemistry & Biochemistry, University
of California, Santa Cruz, California 95064, United States
| | - David A. Coppage
- Department
of Chemistry & Biochemistry, University
of California, Santa Cruz, California 95064, United States
| | - Phillip Crews
- Department
of Chemistry & Biochemistry, University
of California, Santa Cruz, California 95064, United States
| | - April L. Risinger
- Department
of Pharmacology, University of Texas Health
Science Center at San Antonio, San Antonio, Texas 78229, United States
| | - Tyler A. Johnson
- Department
of Natural Sciences, Dominican University
of California, San Rafael, California 94901, United States
- Department
of Chemistry & Biochemistry, University
of California, Santa Cruz, California 95064, United States
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Natural Products from Tongan Marine Organisms. Molecules 2021; 26:molecules26154534. [PMID: 34361690 PMCID: PMC8347048 DOI: 10.3390/molecules26154534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/15/2021] [Accepted: 07/22/2021] [Indexed: 12/29/2022] Open
Abstract
The islands of the South Pacific Ocean have been in the limelight for natural product biodiscovery, due to their unique and pristine tropical waters and environment. The Kingdom of Tonga is an archipelago in the central Indo-Pacific Ocean, consisting of 176 islands, 36 of which are inhabited, flourishing with a rich diversity of flora and fauna. Many unique natural products with interesting bioactivities have been reported from Indo-Pacific marine sponges and other invertebrate phyla; however, there have not been any reviews published to date specifically regarding natural products from Tongan marine organisms. This review covers both known and new/novel Marine Natural Products (MNPs) and their biological activities reported from organisms collected within Tongan territorial waters up to December 2020, and includes 109 MNPs in total, the majority from the phylum Porifera. The significant biological activity of these metabolites was dominated by cytotoxicity and, by reviewing these natural products, it is apparent that the bulk of the new and interesting biologically active compounds were from organisms collected from one particular island, emphasizing the geographic variability in the chemistry between these organisms collected at different locations.
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