CUSCUTA REFLEXA (AFTIMOON): A COMPREHENSIVE NARRATIVE REVIEW OF ITS ANTICANCER POTENTIAL, MOLECULAR MECHANISMS, AND THERAPEUTIC PROSPECTS
Main Article Content
Keywords
Cuscuta reflexa; aftimoon; dodder; phytochemistry; apoptosis; NF-κB; reactive oxygen species; hepatocellular carcinoma; ethnopharmacology; phytopharmaceutical development.
Abstract
Cuscuta reflexa (Convolvulaceae), an obligate stem holoparasite known in Unani medicine as aftimoon and vernacularly as dodder or amarbel, has a long ethnomedicinal history across South Asia for the management of tumours, jaundice, inflammation and hepatic disorders. This narrative review critically appraises the evidence for its anticancer potential and situates traditional use within contemporary pharmacology. To our knowledge, this is the first evidence-graded appraisal of the species’ anticancer literature, explicitly distinguishing mechanisms that are directly demonstrated in the plant from those merely predicted or extrapolated from isolated constituents. The verifiable preclinical dataset is modest but internally coherent. An aqueous extract induced apoptosis in Hep3B hepatocellular carcinoma cells with reported up-regulation of p53 and BAX and down-regulation of Bcl-2 and survivin, alongside inhibition of nuclear factor-kappa B (NF-κB) DNA binding1. Whole-plant chloroform and ethanol extracts prolonged survival and reduced tumour burden in Ehrlich ascites carcinoma-bearing mice2. An ethanolic extract attenuated 1,2-dimethylhydrazine (DMH)-induced aberrant crypt foci in a rat colon-cancer model with a favourable hepatic safety signal3. A stem extract produced concentration-dependent, reactive oxygen species (ROS)-driven apoptosis in A549 lung adenocarcinoma cells (half-maximal inhibitory concentration, IC₅₀ ≈ 437 µg/mL), supported by network-pharmacology predictions4. Activity is plausibly attributable to a flavonoid-rich matrix (kaempferol, quercetin, myricetin, luteolin, apigenin and glycosides), coumarins, phenolic acids, phytosterols and the pigment amarbelin. The recurring mechanistic themes are intrinsic (mitochondrial) apoptosis, redox modulation and suppression of NF-κB-linked inflammatory signalling. Critically, direct species-specific evidence is absent for most pathways commonly invoked for phytochemicals (PI3K/Akt/mTOR, MAPK, STAT3, Wnt/β-catenin, VEGF-dependent angiogenesis), and there are no data on autophagy, epigenetics, metastasis, pharmacokinetics, cancer-targeted nanoformulations, chemotherapy combinations or clinical outcomes. Methodological limitations undefined standardisation, whole-extract testing without bioassay-guided isolation, high IC₅₀ values, small cohorts and transplantable rather than orthotopic models temper current conclusions. Cuscuta reflexa is best described as an early-stage, mechanistically plausible but under-investigated anticancer candidate requiring standardisation, bioassay-guided fractionation, target-resolved mechanistic study, pharmacokinetic characterisation and formulation science before any translational claim.
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Habibullah
Head of Department, Department of Pharmacology, Government Unani Medical College, Chennai, Tamil Nadu, India. ORCID: 0000-0002-4702-2325.
Shuaib Ahmed
PG Scholar, Department of Pharmacology, Government Unani Medical College, Chennai, Tamil Nadu, India. ORCID: 0009-0005-1783-572X.
Khalifathullah
PG Scholar, Department of Pharmacology, Government Unani Medical College, Chennai, Tamil Nadu, India. ORCID: 0009-0004-7856-9704.
Mubasheera
Head of Department, Department of Moalijath (Clinical Medicine), Government Unani Medical College, Chennai, Tamil Nadu, India. ORCID: 0000-0003-2242-5897.
Mufasira Fathima
[Pg scholar], Department of Moalijath (Clinical Medicine), Government Unani Medical College, Chennai, Tamil Nadu, India. ORCID: 0009-0009-7896-4516.
Bibi Akhila
PG Scholar, Department of Moalijath (Clinical Medicine), Government Unani Medical College, Chennai, Tamil Nadu, India. ORCID: 0009-0006-8947-5361.
