Rauwolfia serpentina/Indian Snakeroot / AntiBio Cancer Research Results

RS, Rauwolfia serpentina/Indian Snakeroot: Click to Expand ⟱
Features:

Rauwolfia serpentina - Indian Snakeroot, Sarpagandha

Type: Botanical extract / indole alkaloid-containing medicinal plant

Active Constituents: Reserpine, ajmaline, ajmalicine, serpentine, rescinnamine, and related indole alkaloids.

Function: Rauwolfia serpentina contains pharmacologically active indole alkaloids with effects on monoamine transport, adrenergic signaling, cardiovascular regulation, cell proliferation, apoptosis, and other signaling pathways.

Cancer: Experimental evidence suggests anticancer activity for Rauwolfia-derived alkaloids, particularly reserpine, including inhibition of proliferation, induction of apoptosis, and cell-cycle disruption. Evidence for whole Rauwolfia serpentina extract is more limited than for isolated constituents or other Rauwolfia species, so species-specific attribution should be maintained.

Rauwolfia serpentina — also called Indian snakeroot or Sarpagandha, is a medicinal plant in the Apocynaceae family whose roots contain pharmacologically active monoterpenoid indole alkaloids, most notably reserpine, along with ajmaline, ajmalicine, serpentine, rescinnamine, and related compounds. It is classified as a botanical medicinal product / indole-alkaloid source; Reserpine is the best-characterized constituent and acts primarily as an essentially irreversible vesicular monoamine transporter inhibitor, especially VMAT2, depleting norepinephrine, dopamine, and serotonin from neuronal and sympathetic storage vesicles. Historically, Rauwolfia preparations and reserpine were used as antihypertensive agents. Cancer evidence is substantially stronger for isolated reserpine than for standardized R. serpentina extracts, and results from other Rauvolfia species should not automatically be attributed to R. serpentina.

Primary mechanisms (ranked):

  1. Reserpine-mediated VMAT2 inhibition and depletion of vesicular monoamines, producing sustained sympatholytic and central monoaminergic effects; this is the principal established pharmacological mechanism but is not itself a validated anticancer mechanism.
  2. Mitochondrial apoptosis and loss of mitochondrial membrane potential in cancer cells, with BAX/BCL-2 and caspase-associated apoptotic signaling reported for reserpine.
  3. Cell-cycle arrest and inhibition of DNA synthesis/proliferation, including G2 arrest in androgen-independent prostate cancer cells and G0/G1 arrest in some breast-cancer models.
  4. Suppression of tumor invasion and DNA-repair-associated signaling through modulation of TGF-β-related pathways in experimental oral carcinogenesis.
  5. Hippo/YAP signaling modulation by reserpine, including ↓YAP and ↓BCL-2 with ↑MST1 and ↑BAX in a triple-negative breast-cancer model; this evidence derives from isolated reserpine studied alongside Rauvolfia tetraphylla rather than R. serpentina extract.
  6. ROS modulation is secondary and strongly context-dependent: reserpine increased oxidative stress in one triple-negative breast-cancer model but decreased measured ROS in PC3 prostate cancer cells despite mitochondrial depolarization.

Bioavailability / PK relevance: Reserpine is orally absorbed, widely distributed, crosses the blood-brain barrier and placenta, and accumulates substantially in tissues including adipose tissue. Human pharmacokinetic data indicate biphasic elimination, with an early half-life of approximately 4.5 hours and a terminal phase of approximately 11.3 days; pharmacodynamic effects can therefore persist well beyond plasma exposure. Whole-root preparations have variable alkaloid composition and cannot be assumed pharmacokinetically equivalent to purified reserpine.

In-vitro vs systemic exposure relevance: Anticancer findings are predominantly from cell-culture or animal experiments using purified reserpine or extracts whose achievable human tumor exposure is uncertain. Concentrations producing cancer-cell effects should therefore not be assumed achievable or safe with oral R. serpentina. Chronic pharmacological effects may occur at low systemic reserpine exposure because VMAT binding and monoamine depletion are prolonged, but this does not establish clinically relevant anticancer exposure.

Clinical evidence status: Hypertension: historical controlled human evidence and established pharmacology. Cancer: preclinical only; no established anticancer clinical efficacy. Human studies of Rauwolfia/re­serpine primarily concern hypertension rather than cancer. Major constraints include hypotension, bradycardia, CNS monoamine depletion, depression, Parkinsonian/extrapyramidal effects, gastrointestinal hypersecretion, drug interactions, and prolonged pharmacodynamic action. Reserpine-containing labeling also notes animal tumorigenicity and uncertain historical epidemiologic findings concerning breast cancer, making indiscriminate interpretation of reserpine as an anticancer compound inappropriate.

Rauwolfia serpentina Cancer-Relevant Mechanisms

Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 Mitochondrial apoptosis ↑ apoptosis; ↓ mitochondrial membrane potential; ↑ BAX; ↓ BCL-2 Potential mitochondrial and CNS toxicity at pharmacologic exposure R/G Apoptotic cell death Best demonstrated for isolated reserpine. PC3 prostate-cancer cells show mitochondrial depolarization, DNA fragmentation, and apoptotic changes.
2 Cell cycle and DNA synthesis ↓ proliferation; ↓ DNA synthesis; ↑ cell-cycle arrest Potential ↓ proliferation in susceptible normal cells (context-dependent) G Growth suppression G2 arrest reported in PC3 cells; G0/G1 accumulation reported in reserpine-treated MDA-MB-231 cells. Phase depends on model.
3 TGF-β signaling and DNA repair ↓ tumor-promoting TGF-β-associated signaling; ↓ DNA repair; ↓ invasion Uncertain G Reduced survival and invasion Reported in experimental oral carcinogenesis with reserpine. Translation to whole R. serpentina preparations remains unestablished.
4 Hippo YAP signaling ↑ MST1; ↓ LATS1; ↓ YAP; ↓ YAP-TEAD activity; ↑ BAX; ↓ BCL-2 Uncertain G ↓ proliferation and ↑ apoptosis Observed with isolated reserpine in MDA-MB-231 cells in a Rauvolfia tetraphylla study. Constituent evidence is relevant to reserpine but should not be presented as direct R. serpentina extract evidence.
5 Migration and invasion ↓ migration; ↓ invasion Uncertain G Reduced metastatic phenotype Supported by breast-cancer and oral-carcinogenesis models using reserpine.
6 Reactive oxygen species ↑ or ↓ ROS (model-dependent) Potential oxidative and mitochondrial effects (context-dependent) R/G Secondary redox modulation Not suitable for a simple ROS↑ classification. ROS increased in reserpine-treated MDA-MB-231 cells but decreased in PC3 prostate-cancer cells despite mitochondrial depolarization.
7 VMAT2 and monoamine storage ↓ VMAT-dependent vesicular monoamine storage where expressed ↓ VMAT2 function; ↓ norepinephrine, dopamine and serotonin storage P/R Monoamine depletion Core established pharmacological action of reserpine. Highly relevant to systemic toxicity and pharmacology, but its contribution to most reported anticancer effects is not established.
8 Adrenergic and sympathetic signaling Potential ↓ adrenergic signaling (context-dependent) ↓ sympathetic tone; ↓ peripheral vascular resistance; ↓ heart rate R/G Sympatholytic effect Major clinically established effect resulting from catecholamine depletion. Anticancer significance remains indirect and unproven.
9 Prolactin signaling Potential ↑ prolactin-driven signaling in susceptible tumors ↑ prolactin (context-dependent) G Potential adverse proliferative signal Important safety counterpoint. Chronic reserpine increased mammary tumors in rodents, attributed partly to prolactin elevation; relevance to human breast-cancer risk remains uncertain.
10 Clinical Translation Constraint Preclinical anticancer exposure not clinically validated ↓ blood pressure; bradycardia; CNS monoamine depletion; depression risk; extrapyramidal effects G Limits anticancer translation Whole-root alkaloid composition is variable. Reserpine has prolonged tissue pharmacology and an approximately 11-day terminal elimination phase. No established cancer treatment regimen or human anticancer efficacy exists.

P: 0–30 min     R: 30 min–3 hr     G: >3 hr
AntiBio, Antibiotic/Antimicrobial activity: Click to Expand ⟱
Source:
Type:

Antibiotic / antimicrobial activity: The ability of a substance to suppress or kill microorganisms, especially bacteria, by disrupting microbial survival, growth, biofilm formation, cell-wall integrity, membrane function, protein synthesis, nucleic-acid synthesis, quorum sensing, or virulence.

Natural Products that might have antimicrobial properties

Natural supplement or product Principal constituents Potential antimicrobial activity Evidence assessment Reference
Garlic
Allium sativum		 Allicin, ajoene and diallyl sulfides Antibacterial and antifungal activity, with some antiviral and antiparasitic effects reported in laboratory studies. Extensive laboratory evidence, but insufficient clinical evidence to use garlic as a treatment for established infections. Tesfaye A. Revealing the therapeutic uses of garlic and its potential for drug discovery. Scientific review.
Berberine Berberine isoquinoline alkaloid May damage bacterial membranes, inhibit efflux pumps, interfere with nucleic-acid and protein synthesis, and inhibit biofilm formation. Strong preclinical evidence and limited indication-specific clinical evidence. Poor oral bioavailability and drug interactions limit its use as a general antimicrobial. Berberine as a therapeutic alkaloid against ESKAPE and multidrug-resistant bacteria: a comprehensive review.
Cranberry extract
Vaccinium macrocarpon		 A-type proanthocyanidins Primarily reduces adhesion of uropathogenic bacteria, particularly Escherichia coli, to urinary epithelial cells. May reduce recurrent urinary tract infections in selected populations. It is preventive rather than a reliable treatment for an active UTI. National Center for Complementary and Integrative Health: Cranberry—Usefulness and Safety.
Probiotics
Lactobacillus, Bifidobacterium and Saccharomyces boulardii 		Live microorganisms; effects are strain-specific Competitive exclusion of pathogens, production of bacteriocins, inhibition of pathogen adhesion and restoration of microbiome function. Some human evidence for antibiotic-associated diarrhea and selected gastrointestinal or vaginal indications. Results cannot be generalized from one strain to another. NIH Office of Dietary Supplements: Probiotics—Health Professional Fact Sheet.
Medical-grade honey / Manuka honey Methylglyoxal, hydrogen peroxide, defensin-1, organic acids and high osmolarity Broad topical antibacterial and antibiofilm activity; also supports autolytic debridement and wound healing. Clinically relevant primarily as a standardized, medical-grade topical wound product. Ordinary food honey is not equivalent. Jull AB et al. Honey as a topical treatment for wounds. Cochrane systematic review.
Oregano oil
Origanum vulgare		 Carvacrol and thymol Antibacterial, antifungal and antibiofilm activity, largely through disruption of microbial membranes. Strong laboratory activity, but inadequate human evidence for oral treatment of infections. Concentrated oil can cause irritation. Chemical composition, biological activity and potential uses of oregano and oregano essential oil: a review.
Thyme
Thymus vulgaris		 Thymol and carvacrol Antibacterial, antifungal and antibiofilm activity through membrane damage and altered microbial permeability. Better established as a constituent of topical antiseptic and oral-care formulations than as an oral treatment for systemic infection. PubMed literature: thyme, thymol and antimicrobial activity.
Tea tree oil
Melaleuca alternifolia		 Terpinen-4-ol and related monoterpenes Topical antibacterial and antifungal activity with some antiviral laboratory activity. Some clinical evidence for topical acne and fungal skin conditions. Tea tree oil is toxic when swallowed and may cause contact dermatitis. Carson CF et al. Melaleuca alternifolia oil: a review of antimicrobial and other medicinal properties.
Echinacea
Echinacea species		 Alkamides, caffeic-acid derivatives, polysaccharides and glycoproteins Primarily immunomodulatory; relatively weak and inconsistent direct antimicrobial activity. Evidence for preventing or shortening respiratory infections is inconsistent and preparation-dependent. National Center for Complementary and Integrative Health: Echinacea—Usefulness and Safety.
Elderberry
Sambucus nigra		 Anthocyanins, flavonols and phenolic acids Antiviral effects have been reported in cell-culture and preclinical studies, including interference with viral entry or replication. Small human trials have examined respiratory symptoms, but evidence remains insufficient to establish treatment of influenza or other viral infections. National Center for Complementary and Integrative Health: Elderberry.
Curcumin / turmeric
Curcuma longa		 Curcumin and related curcuminoids Antibacterial, antifungal, antiviral and antibiofilm activity through multiple membrane, enzyme and signalling effects. Predominantly laboratory evidence. Poor aqueous solubility and low systemic bioavailability are major clinical limitations. Moghadamtousi SZ et al. A review on antibacterial, antiviral and antifungal activity of curcumin.
Ginger
Zingiber officinale		 Gingerols, shogaols and zingerone Antibacterial and antifungal activity, including possible inhibition of microbial adhesion and biofilm formation. Primarily laboratory evidence; there is little direct clinical evidence that ginger supplements treat infections. PubMed literature: ginger, gingerols and antimicrobial activity.
Clove
Syzygium aromaticum		 Eugenol and eugenyl acetate Antibacterial, antifungal and local antiseptic activity, principally through membrane and protein disruption. Relevant mainly to topical, food-preservation and dental applications. Evidence for systemic infection treatment is insufficient. PubMed literature: clove, eugenol and antimicrobial activity.
Cinnamon
Cinnamomum species		 Cinnamaldehyde, eugenol and cinnamic acid derivatives Antibacterial, antifungal and antibiofilm activity; may alter microbial membranes and quorum-sensing pathways. Predominantly laboratory evidence. Cassia cinnamon can contribute substantial coumarin exposure when consumed in concentrated amounts. PubMed literature: cinnamon, cinnamaldehyde and antimicrobial activity.
Neem
Azadirachta indica		 Nimbidin, nimbin, nimbolide, azadirachtin and other limonoids Antibacterial, antifungal, antiparasitic and antibiofilm effects have been reported. Some topical and dental research exists, but systemic clinical evidence is inadequate. Oral neem preparations have important safety concerns. PubMed literature: Azadirachta indica and antimicrobial activity.
Black seed
Nigella sativa		 Thymoquinone, thymohydroquinone and related volatile compounds Antibacterial, antifungal, antiparasitic and possible antiviral activity. Considerable laboratory research but limited, heterogeneous clinical evidence for infectious diseases. PubMed literature: Nigella sativa, thymoquinone and antimicrobial activity.
Green tea extract
Camellia sinensis		 Epigallocatechin gallate (EGCG) and other catechins Antibacterial, antiviral and antibiofilm activity; may damage membranes, inhibit microbial enzymes and enhance some antibiotics. Some localized oral-health evidence, but limited evidence for treating systemic infections. Concentrated extracts may cause liver injury in susceptible individuals. PubMed literature: EGCG, green tea and antimicrobial activity.
Licorice root
Glycyrrhiza species		 Glycyrrhizin, glycyrrhetinic acid, liquiritigenin and other flavonoids Antiviral, antibacterial and antifungal effects have been reported in laboratory and preclinical studies. Limited clinical antimicrobial evidence. Glycyrrhizin can cause hypertension, hypokalemia, fluid retention and clinically important drug interactions. National Center for Complementary and Integrative Health: Licorice Root.
Andrographis
Andrographis paniculata		 Andrographolide and related diterpenoid lactones Immunomodulatory, anti-inflammatory and possible antiviral or antibacterial activity. Some evidence for modest symptom reduction in uncomplicated respiratory infections, but this does not establish direct pathogen eradication. PubMed literature: Andrographis and respiratory infections.
Pelargonium sidoides Proanthocyanidins, phenolic acids and oxygenated coumarin derivatives Possible antiviral, antibacterial anti-adhesive and immunomodulatory activity. Some human evidence for modest symptom improvement in acute bronchitis and selected respiratory infections. It is not a substitute for antibiotics when bacterial treatment is indicated. Timmer A et al. Pelargonium sidoides extract for acute respiratory tract infections. Cochrane systematic review.
Monolaurin
Glycerol monolaurate		 Monolaurin, a monoester derived from lauric acid May disrupt lipid membranes and interfere with signalling or virulence in certain bacteria and enveloped viruses. Predominantly laboratory and animal evidence. There is insufficient clinical evidence to recommend oral monolaurin for infections. PubMed literature: glycerol monolaurate and antimicrobial activity.
Caprylic acid Octanoic acid, an eight-carbon medium-chain fatty acid Antifungal and membrane-disrupting activity, particularly against Candida species, has been reported in vitro. Insufficient human evidence for treating candidiasis or systemic fungal infection. Marketing claims commonly exceed the evidence. PubMed literature: caprylic acid and Candida.
Olive leaf extract
Olea europaea		 Oleuropein, hydroxytyrosol and elenolic-acid derivatives Antibacterial, antiviral and antifungal activity has been observed in laboratory studies. Preliminary evidence only; clinical trials have not established it as a treatment for infectious disease. PubMed literature: olive leaf, oleuropein and antimicrobial activity.
Goldenseal
Hydrastis canadensis		 Hydrastine, canadine and berberine Extracts and individual alkaloids show antibacterial activity in laboratory studies. There is no good clinical evidence that goldenseal treats human infections. Product composition, absorption and drug interactions are important limitations. National Center for Complementary and Integrative Health: Goldenseal.
Sweet wormwood / artemisinin
Artemisia annua 		Artemisinin and related sesquiterpene lactones Artemisinin derivatives are potent antimalarial agents. Additional antibacterial, antiviral and antiparasitic effects are being studied. Artemisinin-based combination therapies are established medicines, not ordinary supplements. Herbal preparations should not replace standardized malaria treatment because dose variability can promote treatment failure and resistance. World Health Organization: Guidelines for malaria.

Evidence interpretation

  • Clinical evidence: Effects have been studied in human participants, but usually for a specific preparation, route, dose and indication.
  • Preclinical evidence: Activity has mainly been demonstrated in cell culture, microbial cultures or animal models.
  • Anti-adhesive or probiotic activity: The product may reduce colonization or pathogen attachment without directly killing the microorganism.
  • Topical evidence: Results from topical use cannot be assumed to apply to an orally administered supplement.


Scientific Papers found: Click to Expand⟱
7378- RS,    Reserpine inhibits DNA repair, cell proliferation, invasion and induces apoptosis in oral carcinogenesis via modulation of TGF-β signaling
*antiOx↑, *AntiBio↑, TGF-β↓, p‑SMAD3↓, p‑SMAD2↓, p‑SMAD4↓, SMAD3↓, Snail↓, ERCC1↓, ERCC4/XPF↓, Ku70/XRCC6↓, PCNA↓, cycD1/CCND1↓, Hif1a↓, IL6↓, Mcl-1↓, BAX↑, Cyt‑c↑, APAF1↑, Casp9↑, Casp3↑, PARP↑, DNArepair↓, TumCP↓, TumCI↓,

Showing Research Papers: 1 to 1 of 1

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 1

Pathway results for Effect on Cancer / Diseased Cells:


NA, unassigned(tgid=0) ⓘ

ERCC4/XPF↓, 1,   Ku70/XRCC6↓, 1,  

Core Metabolism/Glycolysis(tgid=4) ⓘ

ERCC1↓, 1,  

Cell Death(tgid=5) ⓘ

APAF1↑, 1,   BAX↑, 1,   Casp3↑, 1,   Casp9↑, 1,   Cyt‑c↑, 1,   Mcl-1↓, 1,  

DNA Damage & Repair(tgid=10) ⓘ

DNArepair↓, 1,   PARP↑, 1,   PCNA↓, 1,  

Cell Cycle & Senescence(tgid=11) ⓘ

cycD1/CCND1↓, 1,  

Migration(tgid=13) ⓘ

p‑SMAD2↓, 1,   SMAD3↓, 1,   p‑SMAD3↓, 1,   p‑SMAD4↓, 1,   Snail↓, 1,   TGF-β↓, 1,   TumCI↓, 1,   TumCP↓, 1,  

Angiogenesis & Vasculature(tgid=14) ⓘ

Hif1a↓, 1,  

Immune & Inflammatory Signaling(tgid=16) ⓘ

IL6↓, 1,  

Clinical Biomarkers(tgid=22) ⓘ

IL6↓, 1,  
Total Targets: 24

Pathway results for Effect on Normal Cells:


NA, unassigned(tgid=0) ⓘ

AntiBio↑, 1,  

Redox & Oxidative Stress(tgid=1) ⓘ

antiOx↑, 1,  
Total Targets: 2

Scientific Paper Hit Count for: AntiBio, Antibiotic/Antimicrobial activity
Query results interpretion may depend on "conditions" listed in the research papers.
Such Conditions may include : 
  -low or high Dose
  -format for product, such as nano of lipid formations
  -different cell line effects
  -synergies with other products 
  -if effect was for normal or cancerous cells

Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:441  Target#:1483  State#:%  Dir#:%
  wNotes=0  sortOrder:rid,rpid

 

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