1
|
The Anti-Tubercular Aminolipopeptide Trichoderin A Displays Selective Toxicity against Human Pancreatic Ductal Adenocarcinoma Cells Cultured under Glucose Starvation. Pharmaceutics 2023; 15:pharmaceutics15010287. [PMID: 36678914 PMCID: PMC9866366 DOI: 10.3390/pharmaceutics15010287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Pancreatic ductal adenocarcinoma remains a highly debilitating condition with no effective disease-modifying interventions. In our search for natural products with promising anticancer activity, we identified the aminolipopeptide trichoderin A as a potential candidate. While it was initially isolated as an antitubercular peptide, we provide evidence that it is also selectively toxic against BxPC-3 and PANC-1 human pancreatic ductal adenocarcinoma cells cultured under glucose deprivation. This has critical implications for the pancreatic ductal adenocarcinoma, which is characterized by nutrient deprivation due to its hypovascularized network. We have also successfully simplified the trichoderin A peptide backbone, allowing greater accessibility to the peptide for further biological testing. In addition, we also conducted a preliminary investigation into the role of peptide lipidation at the N-terminus. This showed that analogues with longer fatty acyl chains exhibited superior cytotoxicity than those with shorter acyl chains. Further structural optimization of trichoderin A is anticipated to improve its biological activity, whilst ongoing mechanistic studies to elucidate its intracellular mechanism of action are conducted in parallel.
Collapse
|
2
|
Tehan R, Blount RR, Goold RL, Mattos DR, Spatafora NR, Tabima JF, Gazis R, Wang C, Ishmael JE, Spatafora JW, McPhail KL. Tolypocladamide H and the Proposed Tolypocladamide NRPS in Tolypocladium Species. JOURNAL OF NATURAL PRODUCTS 2022; 85:1363-1373. [PMID: 35500108 PMCID: PMC9150700 DOI: 10.1021/acs.jnatprod.2c00153] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The genome of entomopathogenic fungus Tolypocladium inflatum Gams encodes 43 putative biosynthetic gene clusters for specialized metabolites, although genotype-phenotype linkages have been reported only for the cyclosporins and fumonisins. T. inflatum was cultured in defined minimal media, supplemented with or without one of nine different amino acids. Acquisition of LC-MS/MS data for molecular networking and manual analysis facilitated annotation of putative known and unknown metabolites. These data led us to target a family of peptaibols and guided the isolation and purification of tolypocladamide H (1), which showed modest antibacterial activity and toxicity to mammalian cells at micromolar concentrations. HRMS/MS, NMR, and advanced Marfey's analysis were used to assign the structure of 1 as a peptaibol containing 4-[(E)-2-butenyl]-4-methyl-l-threonine (Bmt), a hallmark structural motif of the cyclosporins. LC-MS detection of homologous tolypocladamide metabolites and phylogenomic analyses of peptaibol biosynthetic genes in other cultured Tolypocladium species allowed assignment of a putative tolypocladamide nonribosomal peptide synthetase gene.
Collapse
Affiliation(s)
- Richard
M. Tehan
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Rheannon R. Blount
- Department
of Botany and Plant Pathology, College of Agricultural and Life Sciences, Oregon State University, Corvallis, Oregon 97331, United States
| | - Ryan L. Goold
- Department
of Botany and Plant Pathology, College of Agricultural and Life Sciences, Oregon State University, Corvallis, Oregon 97331, United States
| | - Daphne R. Mattos
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Nicolas R. Spatafora
- Department
of Botany and Plant Pathology, College of Agricultural and Life Sciences, Oregon State University, Corvallis, Oregon 97331, United States
| | - Javier F. Tabima
- Department
of Botany and Plant Pathology, College of Agricultural and Life Sciences, Oregon State University, Corvallis, Oregon 97331, United States
- Department
of Biology, Clark University, Worcester, Massachusetts 01610, United States
| | - Romina Gazis
- Department
of Plant Pathology, Tropical Research and Education Center, University of Florida, Homestead, Florida 33031, United States
| | - Chengshu Wang
- Key
Laboratory of Insect Developmental and Evolutionary Biology, CAS Center
for Excellence in Molecular Plant Sciences, Shanghai Institute of
Plant Physiology and Ecology, Chinese Academy
of Sciences, Shanghai 200032, People’s Republic
of China
| | - Jane E. Ishmael
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Joseph W. Spatafora
- Department
of Botany and Plant Pathology, College of Agricultural and Life Sciences, Oregon State University, Corvallis, Oregon 97331, United States
- Tel: +1 541 737 8134. E-mail:
| | - Kerry L. McPhail
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
- Tel: +1 541 737 5808. E-mail:
| |
Collapse
|
3
|
Brand M, Wang L, Agnello S, Gazzola S, Gall FM, Raguž L, Kaiser M, Schmidt RS, Ritschl A, Jelk J, Hemphill A, Mäser P, Bütikofer P, Adams M, Riedl R. Antiprotozoische Struktur‐Aktivitäts‐Beziehungen von synthetischen Leucinostatin‐Derivaten und Aufklärung ihres Wirkprinzips. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michael Brand
- Institut für Chemie und Biotechnologie Fachstelle Pharmazeutische Wirkstoffforschung und Arzneimittelentwicklung Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) Einsiedlerstrasse 31 8820 Wädenswil Schweiz
| | - Lei Wang
- Institut für Biochemie und Molekulare Medizin Universität Bern Bühlstrasse 28 3012 Bern Schweiz
| | - Stefano Agnello
- Institut für Chemie und Biotechnologie Fachstelle Pharmazeutische Wirkstoffforschung und Arzneimittelentwicklung Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) Einsiedlerstrasse 31 8820 Wädenswil Schweiz
| | - Silvia Gazzola
- Institut für Chemie und Biotechnologie Fachstelle Pharmazeutische Wirkstoffforschung und Arzneimittelentwicklung Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) Einsiedlerstrasse 31 8820 Wädenswil Schweiz
| | - Flavio M. Gall
- Institut für Chemie und Biotechnologie Fachstelle Pharmazeutische Wirkstoffforschung und Arzneimittelentwicklung Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) Einsiedlerstrasse 31 8820 Wädenswil Schweiz
| | - Luka Raguž
- Institut für Chemie und Biotechnologie Fachstelle Pharmazeutische Wirkstoffforschung und Arzneimittelentwicklung Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) Einsiedlerstrasse 31 8820 Wädenswil Schweiz
| | - Marcel Kaiser
- Schweizerisches Tropen- und Public Health-Institut Socinstrasse 57 4051 Basel Schweiz
- University of Basel Petersplatz 1 4001 Basel Schweiz
| | - Remo S. Schmidt
- Schweizerisches Tropen- und Public Health-Institut Socinstrasse 57 4051 Basel Schweiz
- University of Basel Petersplatz 1 4001 Basel Schweiz
| | - Amélie Ritschl
- Schweizerisches Tropen- und Public Health-Institut Socinstrasse 57 4051 Basel Schweiz
- University of Basel Petersplatz 1 4001 Basel Schweiz
| | - Jennifer Jelk
- Institut für Biochemie und Molekulare Medizin Universität Bern Bühlstrasse 28 3012 Bern Schweiz
| | - Andrew Hemphill
- Institut für Parasitologie Vetsuisse Fakultät Universität Bern Länggass-Strasse 122 3012 Bern Schweiz
| | - Pascal Mäser
- Schweizerisches Tropen- und Public Health-Institut Socinstrasse 57 4051 Basel Schweiz
- University of Basel Petersplatz 1 4001 Basel Schweiz
| | - Peter Bütikofer
- Institut für Biochemie und Molekulare Medizin Universität Bern Bühlstrasse 28 3012 Bern Schweiz
| | | | - Rainer Riedl
- Institut für Chemie und Biotechnologie Fachstelle Pharmazeutische Wirkstoffforschung und Arzneimittelentwicklung Zürcher Hochschule für Angewandte Wissenschaften (ZHAW) Einsiedlerstrasse 31 8820 Wädenswil Schweiz
| |
Collapse
|
4
|
Brand M, Wang L, Agnello S, Gazzola S, Gall FM, Raguž L, Kaiser M, Schmidt RS, Ritschl A, Jelk J, Hemphill A, Mäser P, Bütikofer P, Adams M, Riedl R. Antiprotozoal Structure-Activity Relationships of Synthetic Leucinostatin Derivatives and Elucidation of their Mode of Action. Angew Chem Int Ed Engl 2021; 60:15613-15621. [PMID: 33730410 PMCID: PMC8360131 DOI: 10.1002/anie.202102153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/13/2021] [Indexed: 12/15/2022]
Abstract
Leucinostatin A is one of the most potent antiprotozoal compounds ever described, but little was known on structure-activity relationships (SAR). We used Trypanosoma brucei as a protozoal model organism to test synthetically modified derivatives, resulting in simplified but equally active compounds 2 (ZHAWOC6025) and 4 (ZHAWOC6027), which were subsequently modified in all regions of the molecule to gain an in-depth SAR understanding. The antiprotozoal SAR matched SAR in phospholipid liposomes, where membrane integrity, leaking, and dynamics were studied. The mode of action is discussed based on a structure-activity analysis of derivatives in efficacy, ultrastructural studies in T. brucei, and artificial membrane models, mimicking membrane stability and membrane potential. The main site of antiprotozoal action of natural and synthetic leucinostatins lies in the destabilization of the inner mitochondrial membrane, as demonstrated by ultrastructural analysis, electron microscopy and mitochondrial staining. Long-time sublethal exposure of T. brucei (200 passages) and siRNA screening of 12'000 mutants showed no signs of resistance development to the synthetic derivatives.
Collapse
Affiliation(s)
- Michael Brand
- Institute of Chemistry and BiotechnologyCenter for Organic and Medicinal ChemistryZurich University of Applied Sciences (ZHAW)Einsiedlerstrasse 318820WädenswilSwitzerland
| | - Lei Wang
- Institute of Biochemistry and Molecular MedicineUniversity of BernBühlstrasse 283012BernSwitzerland
| | - Stefano Agnello
- Institute of Chemistry and BiotechnologyCenter for Organic and Medicinal ChemistryZurich University of Applied Sciences (ZHAW)Einsiedlerstrasse 318820WädenswilSwitzerland
| | - Silvia Gazzola
- Institute of Chemistry and BiotechnologyCenter for Organic and Medicinal ChemistryZurich University of Applied Sciences (ZHAW)Einsiedlerstrasse 318820WädenswilSwitzerland
| | - Flavio M. Gall
- Institute of Chemistry and BiotechnologyCenter for Organic and Medicinal ChemistryZurich University of Applied Sciences (ZHAW)Einsiedlerstrasse 318820WädenswilSwitzerland
| | - Luka Raguž
- Institute of Chemistry and BiotechnologyCenter for Organic and Medicinal ChemistryZurich University of Applied Sciences (ZHAW)Einsiedlerstrasse 318820WädenswilSwitzerland
| | - Marcel Kaiser
- Swiss Tropical and Public Health InstituteSocinstrasse 574051BaselSwitzerland
- University of BaselPetersplatz 14001BaselSwitzerland
| | - Remo S. Schmidt
- Swiss Tropical and Public Health InstituteSocinstrasse 574051BaselSwitzerland
- University of BaselPetersplatz 14001BaselSwitzerland
| | - Amélie Ritschl
- Swiss Tropical and Public Health InstituteSocinstrasse 574051BaselSwitzerland
- University of BaselPetersplatz 14001BaselSwitzerland
| | - Jennifer Jelk
- Institute of Biochemistry and Molecular MedicineUniversity of BernBühlstrasse 283012BernSwitzerland
| | - Andrew Hemphill
- Institute of ParasitologyVetsuisse FacultyUniversity of BernLänggass-Strasse 1223012BernSwitzerland
| | - Pascal Mäser
- Swiss Tropical and Public Health InstituteSocinstrasse 574051BaselSwitzerland
- University of BaselPetersplatz 14001BaselSwitzerland
| | - Peter Bütikofer
- Institute of Biochemistry and Molecular MedicineUniversity of BernBühlstrasse 283012BernSwitzerland
| | | | - Rainer Riedl
- Institute of Chemistry and BiotechnologyCenter for Organic and Medicinal ChemistryZurich University of Applied Sciences (ZHAW)Einsiedlerstrasse 318820WädenswilSwitzerland
| |
Collapse
|
5
|
Hanna CC, Hermant YO, Harris PWR, Brimble MA. Discovery, Synthesis, and Optimization of Peptide-Based Antibiotics. Acc Chem Res 2021; 54:1878-1890. [PMID: 33750106 DOI: 10.1021/acs.accounts.0c00841] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The rise of multidrug resistant bacteria has significantly compromised our supply of antibiotics and poses an alarming medical and economic threat to society. To combat this problem, it is imperative that new antibiotics and treatment modalities be developed, especially those toward which bacteria are less capable of developing resistance. Peptide natural products stand as promising candidates to meet this need as bacterial resistance is typically slow in response to their unique modes of action. They also have additional benefits including favorable modulation of host immune responses and often possess broad-spectrum activity against notoriously treatment resistant bacterial biofilms. Moreover, nature has provided a wealth of peptide-based natural products from a range of sources, including bacteria and fungi, which can be hijacked in order to combat more dangerous clinically relevant infections.This Account highlights recent advances in the total synthesis and development of a range of peptide-based natural product antibiotics and details the medicinal chemistry approaches used to optimize their activity.In the context of antibiotics with potential to treat Gram-positive bacterial infections, this Account covers the synthesis and optimization of the natural products daptomycin, glycocin F, and alamethicin. In particular, the reported synthesis of daptomycin highlights the utility of on-resin ozonolysis for accessing a key kynurenine residue from the canonical amino acid tryptophan. Furthermore, the investigation into glycocin F analogues uncovered a potent lead compound against Lactobacillus plantarum that bears a non-native thioacetal linkage to a N-acetyl-d-glucosamine (GlcNAc) sugar, which is otherwise O-linked in its native form.For mycobacterial infections, this Account covers the synthesis and optimization of teixobactin, callyaerin A, lassomycin, and trichoderin A. The synthesis of callyaerin A, in particular, highlighted the importance of a (Z)-2,3-diaminoacrylamide motif for antimicrobial activity against Mycobacterium tuberculosis, while the synthesis of trichoderin A highlighted the importance of (R)-stereoconfiguration in a key 2-amino-6-hydroxy-4-methyl-8-oxodecanoic acid (AHMOD) residue.Lastly, this Account covers lipopeptide antibiotics bearing activity toward Gram-negative bacterial infections, namely, battacin and paenipeptin C. In both cases, optimization of the N-terminal lipid tails led to the identification of analogues with potent activity toward Escherichia coli and Pseudomonas aeruginosa.
Collapse
Affiliation(s)
- Cameron C. Hanna
- School of Chemical Sciences The University of Auckland, 23 Symonds St, Auckland 1142, New Zealand
| | - Yann O. Hermant
- School of Chemical Sciences The University of Auckland, 23 Symonds St, Auckland 1142, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland 1142, New Zealand
| | - Paul W. R. Harris
- School of Chemical Sciences The University of Auckland, 23 Symonds St, Auckland 1142, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland 1142, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland 1142, New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences The University of Auckland, 23 Symonds St, Auckland 1142, New Zealand
- School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland 1142, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland 1142, New Zealand
| |
Collapse
|
6
|
Watanabe T, Abe H, Shibasaki M. Catalytic Asymmetric Total Synthesis of Leucinostatin A. CHEM REC 2020; 21:175-187. [PMID: 33107684 DOI: 10.1002/tcr.202000108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/05/2020] [Indexed: 12/30/2022]
Abstract
This review describes our efforts toward achieving catalytic asymmetric total synthesis of leucinostatin A, a compound that interferes with the tumor-stroma interaction. The synthesis utilizes four catalytic asymmetric reactions, including direct-type reactions exemplified by high atom-economy, and three C-C bond forming reactions. Thorough analysis of the NMR data, HPLC profiles, and biologic activity led us to unambiguously revise the absolute configuration regarding the 6-position of the AHMOD residue side chain from S (reported) to R. Other examples of previously reported important studies on the stereoselective synthesis of HyLeu and AHMOD are also described.
Collapse
Affiliation(s)
- Takumi Watanabe
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Hikaru Abe
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| |
Collapse
|
7
|
Synthesis and antiproliferative activity of C- and N-terminal analogues of culicinin D. Bioorg Med Chem Lett 2020; 30:127331. [PMID: 32631536 DOI: 10.1016/j.bmcl.2020.127331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 11/20/2022]
Abstract
Culicinin D (1), a 10 amino acid peptaibol containing several unusual residues, has been shown to exhibit potent anticancer activity. Previous work in our group towards developing a structure-activity relationship (SAR) for this peptaibol has concentrated on replacement of the synthetically challenging AHMOD (3) and AMD (4) residues, resulting in the discovery of analogues with equivalent or better potency and simplified synthesis. The SAR of this peptaibol is extended in this work by investigating the effect of the N-terminal lipid tail and C-terminal amino alcohol, revealing the key contribution of each of these moieties on antiproliferative activity in a panel of breast and lung cancer cell lines.
Collapse
|
8
|
Stubbing LA, Kavianinia I, Abbattista MR, Harris PWR, Smaill JB, Patterson AV, Brimble MA. Synthesis and antiproliferative activity of culicinin D analogues containing simplified AHMOD-based residues. Eur J Med Chem 2019; 177:235-246. [PMID: 31152989 DOI: 10.1016/j.ejmech.2019.05.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/13/2019] [Accepted: 05/19/2019] [Indexed: 10/26/2022]
Abstract
Culicinin D is a 10 amino acid peptaibol containing a rare and synthetically challenging (2S,4S,6R)-AHMOD residue, that exhibits potent antiproliferative activity against MDA-MB-468 cells. An SAR study focusing on replacement of the AHMOD residue was undertaken, culminating in the revelation that a 6-hydroxy or 6-keto substituent was essential to retain potent low nanomolar antiproliferative activity.
Collapse
Affiliation(s)
- Louise A Stubbing
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, 1010, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand
| | - Iman Kavianinia
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, 1010, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand
| | - Maria R Abbattista
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand; Auckland Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand
| | - Paul W R Harris
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, 1010, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand; School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland, 1010, New Zealand
| | - Jeff B Smaill
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand; Auckland Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand
| | - Adam V Patterson
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand; Auckland Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, 1010, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand; School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland, 1010, New Zealand.
| |
Collapse
|