Potent Antimalarial Activity of Two Arenes Linked with Triamine Designed To Have Multiple Interactions with Heme
摘要:
Based on the idea that compounds designed to exhibit high affinity for heme would block hemozoin formation, a critical heme-detoxification process for malarial parasites, we synthesized a series of compounds with two pi-conjugated moieties at terminal amino groups of triamine. These compounds exhibited moderate to high antimalarial activities in vitro toward both chloroquine-sensitive and chloroquine-resistant Plasmodium falciparum. In a P. berghei-infected mouse model, 3a and 12a showed potent antimalarial activities compared to artesunate, as well as a prolonged duration of antimalarial effect. We found a good correlation between protective activity against hemin degradation and antimalarial activity. Compounds 8b and 3a strongly inhibited hemozoin formation catalyzed by heme detoxification protein.
作者:Jonathan L. Vennerstrom、Arba L. Ager,、Arnulf Dorn、Steven L. Andersen、Lucia Gerena、Robert G. Ridley、Wilbur K. Milhous
DOI:10.1021/jm9803828
日期:1998.10.1
berghei in vivo. These bisquinolines had IC50 values from 1 to 100 nM against P. falciparum in vitro. Six of the 11 bisquinolines were significantly more potent against the chloroquine-resistant W2 clone compared to the chloroquine-sensitive D6 clone. For bisquinolines 1-11 there was no relationship between the length of the bisquinoline heteroalkane bridge and antimalarial activity and no correlation
Synthesis and in vitro antimalarial activity of a series of bisquinoline and bispyrrolo[1,2a]quinoxaline compounds
作者:Lezanne van Heerden、Theunis T. Cloete、J. Wilma Breytenbach、Carmen de Kock、Peter J. Smith、Jaco C. Breytenbach、David D. N’Da
DOI:10.1016/j.ejmech.2012.07.037
日期:2012.9
Series of bisquinolines 4–15 and bispyrrolo[1,2a]quinoxalines 16–20 containing various polyamine linkers were synthesized. The aqueous solubility and distribution coefficient were experimentally determined. The compounds were screened for antimalarial activity alongside chloroquine against D10 and Dd2 strains of Plasmodium falciparum. The growth inhibitory effects of biscompounds 4–9 were assessed
Bisquinoline heteroalkanediamines were structurally modified in order to study the effects of enhanced bulkiness and rigidity on both their activity on strains of Plasmodium falciparum expressing different degrees of chloroquine (CQ) resistance and their cytotoxicity toward mammalian cells. While cyclization yielded molecules of greater rigidity that were not more active than their linear counterparts, they were characterized by an absence of cytotoxicity. Alternatively, dimerization of these compounds led to tetraquinolines that are very potent for CQ-resistant strains and noncytotoxic.
Anticancer properties of bisaminoquinolines with modified linkers
作者:Yuanhao Wang、Vaibhav Jain、Amanda Versace、Monika Bhardwaj、Mary Ann S. Crissey、Ravi K. Amaravadi、Jeffrey D. Winkler
DOI:10.1016/j.bmcl.2021.128272
日期:2021.10
A pH‐Driven Small‐Molecule Nanotransformer Hijacks Lysosomes and Overcomes Autophagy‐Induced Resistance in Cancer
作者:Zhao Ma、Kai Lin、Menghuan Tang、Mythili Ramachandran、Reng Qiu、Jin Li、Lucas N. Solano、Yanyu Huang、Cristabelle De Souza、Sara Abou‐Adas、Bai Xiang、Lanwei Zhang、Minyong Li、Yuanpei Li
DOI:10.1002/anie.202204567
日期:2022.8.26
AbstractSmart conversion of supramolecular structures in vivo is an attractive strategy in cancer nanomedicine, which is usually achieved via specific peptide sequences. Here we developed a lysosomal targeting small‐molecule conjugate, PBC, which self‐assembles into nanoparticles at physiological pH and smartly converts to nanofibrils in lysosomes of tumor cells. Such a transformation mechanically leads to lysosomal dysfunction, autophagy inhibition, and unusual cytoplasmic vacuolation, thus granting PBC a unique anticancer activity as a monotherapy. Importantly, the photo‐activated PBC elicits significant phototoxicity to lysosomes and shows enormous advantages in overcoming autophagy‐caused treatment resistance frequently occurring in conventional phototherapy. This improved phototherapy achieves a complete cure of oral cancer xenografts upon limited administration. Our work provides a new paradigm for the construction of nonpeptide nanotransformers with biomedical activities.