Taxus cuspidata
Taxus cuspidata · Accepted scientific name
Scientific literature: Very Sparse (1 studies) · ★☆☆☆☆
Taxus cuspidata is a significant botanical species valued primarily for its potent anticancer properties. The plant's leaves and seeds serve as vital sources of complex taxanes, most notably the life-saving drug paclitaxel, also known as Taxol. Beyond its primary therapeutic use, researchers utilize MeOH extracts and various preparations to study its ability to act as an MDR-inhibitor. Through methods such as callus culture and suspension cultures, scientists aim to overcome the challenges posed by multidrug resistance in cancer treatment. Additionally, specialized compounds like cephalomannine found within the needles continue to drive pharmacological interest in this species.
- Synonyms
- Taxus Baccata Var. Cuspidata · Taxus Baccata Subsp. Cuspidata
- Common names
- Not available
- Family
- Taxaceae
- Distribution
- Africa
- Plant Parts
- Leaf · Seed
Classification
Common Names
Taxus cuspidata is a botanical species known by a diverse array of common names across different regions. In certain areas, it is frequently referred to as Araragi or Ichi-i. Its regional identities expand further through names such as Cis japoński and Dong bei dou shan. Some also recognize the plant under the moniker Dygusis kukmedis. These varied designations highlight the widespread cultural and linguistic recognition of this unique species.
Sources: Catalogue of Life (COL)
Synonyms
Taxus cuspidata is a significant species within its genus that is often categorized through various botanical classifications. Depending on the taxonomic framework used, it is frequently identified by its recognized synonyms. For instance, it is commonly referred to as Taxus baccata subsp. cuspidata in many botanical records. Additionally, the plant is also documented under the synonym Taxus baccata var. cuspidata. Understanding these overlapping names is essential for maintaining accuracy in scientific study and horticultural practice.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Taxus cuspidata belongs to the vast kingdom Plantae, representing a diverse lineage of living organisms. Within this kingdom, the species is classified under the class Equisetopsida. It further falls into the order Pinales, which connects it to other prominent conifers. As a member of the genus Taxus, it exhibits specific morphological traits unique to its group. Finally, it is situated within the family Taxaceae, completing its botanical identity.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Pinidae |
| Order | Pinales |
| Family | Taxaceae |
| Genus | Taxus |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Taxus cuspidata is a resilient species primarily distributed across the Asia-Temperate region. Its natural range extends through various parts of China, including both the North-Central territories and the Manchuria region. In Eastern Asia, the plant is well-established throughout the landscapes of Japan and Korea. Furthermore, its presence stretches into the Russian Far East, reaching as far as the Kuril Islands. This wide geographic spread highlights the plant's ability to thrive across diverse temperate environments.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Taxus cuspidata is a self-supporting plant that exhibits a classic tree growth form. This species typically reaches a maximum height of 12 m in many environments. However, under certain conditions, it can grow even larger to reach a height of up to 15 m. These structural characteristics make it a versatile addition to various landscapes.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Taxus cuspidata is globally recognized for its vital role in medicine due to its ability to produce Taxol, a premier natural anticancer drug. While this plant remains a cornerstone of cancer treatment, current production levels struggle to meet the growing global demand for the compound. Recent scientific advancements using Iso-Seq analysis have begun to uncover the complex biosynthetic pathways responsible for Taxol synthesis within the species. By identifying specific cytochrome P450s and acyltransferases, researchers are gaining a clearer understanding of how these anticancer precursors are formed. Ultimately, these genetic insights aim to revolutionize production through molecular breeding and synthetic biological technologies.
Compounds
Taxus cuspidata is a highly valued medicinal plant primarily recognized for its ability to produce the potent anticancer drug Taxol. This species contains a diverse array of taxanes and taxoids that serve as critical components for pharmaceutical development. Within these complex chemical profiles, the plant specifically contains paclitaxel, which is essential for treating various forms of cancer. Additionally, research has identified that Taxus cuspidata contains cephalomannine, another significant compound found within its biological extracts. Together, these various relationships highlight the immense therapeutic potential held within this evergreen conifer.
Conditions
Taxus cuspidata demonstrates significant medicinal potential through its ability to treat 2780 AD tumor cells, specifically via the MDR-reversing activity of taxusin. The plant also shows efficacy in treating 7,12-dimethylbenz[a]anthracene (DMBA)-induced mouse skin carcinogenesis. Furthermore, elevated sucrose levels in its nodule cultures induce the production of taxanes such as 7-epi-10-deacetylcephalomannine and 7-epi-10-deacetyltaxol. Additionally, certain taxoids derived from the species are capable of treating CaCl(2)-induced depolymerization of microtubules.
Preparations
Taxus cuspidata is prepared as callus culture to produce biologically active taxoids and facilitate cell clone techniques. The plant is also prepared as needles for the isolation of new epoxy taxoids and the determination of taxol concentrations. Researchers utilize Taxus cuspidata prepared as suspension cultures to study the effects of methyl jasmonate and ethylene on taxol productivity. Furthermore, Taxus cuspidata is prepared as MeOH extract from needles and branches bark to identify new taxanes. Finally, Taxus cuspidata is prepared as solid-solid double layer culture to moderately promote the plating efficiency of its cells.
Parts used
Taxus cuspidata, commonly known as the Japanese yew, serves as a rich biological source for a diverse array of specialized metabolites. Scientific investigations have successfully isolated novel taxanes, including a unique 13-glucoside, directly from the plant's leaves. Advanced mass spectrometry-imaging has further revealed how various active ingredients are distributed throughout specific leaf tissues like the mesophyll and epidermis. Beyond the foliage, the seeds of this evergreen conifer also yield important chemical compounds such as the newly discovered taxoids taxezopidines M and N. Together, these findings highlight the importance of both the leaves and seeds in the chemical profile of this endangered species.