Abstract
Gastrointestinal cancers continue to pose a significant global health challenge, with millions of new cases diagnosed each year. Despite advancements in treatment, the prognosis for many patients remains poor. This article explores the potential of garcinol, a polyisoprenylated benzophenone found in various Garcinia species, as a therapeutic agent against gastrointestinal malignancies. The objective is to review recent research on garcinol’s anticancer properties, its mechanisms of action, and safety aspects. Garcinol exhibits anticancer effects in esophageal, gastric, colorectal, pancreatic, and liver cancers by inhibiting metastasis, inducing apoptosis, and targeting key molecular pathways in cancer progression. Nanotechnology is explored as a means to enhance garcinol delivery and efficacy. Safety assessments suggest a promising toxicity profile. Garcinol shows significant potential as a natural therapeutic agent for gastrointestinal cancers, and future research is needed on optimizing its delivery, exploring synergistic combinations, and conducting clinical trials to validate its efficacy and safety for clinical applications.
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Introduction
Cancers are characterized by aberrant cell proliferation that can infiltrate or spread to other bodily regions. Cancer continues to rank among the world’s most terrible diseases, even with ongoing improvements in diagnostic and treatment techniques (Cao et al. 2021). Currently, which therapeutic methods are used depends on the type and stage of the malignancy. Among the various treatment options include chemotherapy, radiation therapy, targeted therapy, and surgery (Kaur et al. 2023). According to projections, there will be approximately 26 million additional cases of cancer by 2030. As per 2018 report, there were 3.4 million associated fatalities and an anticipated 4.8 million new cases of gastrointestinal (GI) malignancies worldwide (Wang et al. 2024). In the world, 1 in 4 cancer diagnoses and 1 in 3 cancer-related fatalities are caused by gastrointestinal (GI) cancers. Numerous genetic and environmental factors may influence the development and risk of gastrointestinal malignancies, according to studies (Lu et al. 2021). Natural remedies have several special advantages in modern medicine as compared to conventional chemotherapeutic medications. These advantages include low cost, low toxicity, high patient acceptance rate and minimal side effects.
Natural phytochemicals are a rich source of innovative medications for a wide range of illnesses. It has been demonstrated that these substances, which are thought to be safe for human usage, alter important cellular signaling pathways that cause them to have anticancer properties (Sheikh et al., 2020). Garcinia indica/ Garcinia cambogia fruit rinds naturally contain a polyisoprenylated benzophenone called garcinol. Numerous investigations using cancer cell lines and experimental animal models have demonstrated the anti-cancer effects of garcinol (Aggarwal et al. 2020; Noreen et al. 2023). Furthermore, garcinol has been demonstrated to have powerful anticancer effects, activating apoptosis and autophagy, and lowering tumor cell resistance to chemotherapeutic agents in gastric cancer. Old conventional and newly developed anticancer agents face challenges due to the development of drug resistance in cancer cells, which is intricately linked to epigenetic alterations. Epigenetic changes (such as DNA methylation and histone acetylation), decrease the expression of target enzymes while increasing the expression of drug export pumps, resulting in drug resistance (Asano 2020).
Cancer immune evasion is yet another significant challenge in cancer treatment. Tumors cells use mechanisms to block immune checkpoints, such as PD-1, PD-L1, and CTLA-4, and further block proliferation and activation of T-cell. They also attract immunosuppressive cells to form a protective environment around themselves. Additionally, within the tumor microenvironment (TME), tumors accumulate specific metabolites and signaling factors that inhibit function of immune system. They also reduce the availability of vital nutrients to immune cells, further weakening the immune response (Dutta et al. 2023; Wang et al. 2023; Kim and Cho 2022; Kallingal et al. 2023). Metabolic reprogramming, including the Warburg effect, enables cancer cells to survive under various conditions. Cancer cells frequently develop resistance to medicines by processes such as drug efflux and changes in target genes, complicating treatment even more (Liberti and Locasale 2016).
This review delves into the intricate mechanistic insights of the anticancer aspects of garcinol, providing an up-to-date exploration of recent trends and advancements in its research and application. This comprehensive review aims to offer a holistic comprehension of garcinol’s therapeutic potential and its diverse implications for drug discovery and development.
Methodology
We conducted comprehensive searches using PubMed, Scopus, and Google Scholar to gather relevant studies. Relevant full-length articles published in peer-reviewed journals from January 2005 to April 2024 were included. Followings were inclusion and exclusion criteria’s.
Inclusion criteria
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Studies involving animal models or in vitro experiments on specific type of cancer (Esophageal/Gastric/Colorectal/Pancreatic / Liver/ Gallbladder).
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Research examining the effects of garcinol, either alone or in combination with other molecules.
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Preclinical studies (in vitro and in vivo) reporting on biological outcomes (e.g., tumor growth inhibition, apoptosis induction), or molecular outcomes (e.g., changes in gene/protein expression).
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Studies published in English.
Exclusion criteria
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Studies not specifically focused on our cancer of interest (e.g., general studies on other types of cancer or mixed populations without separate analysis for specific cancer type).
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Studies not investigating the effects of garcinol.
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Articles not reporting relevant clinical, biological, or molecular outcomes.
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Non-peer-reviewed articles.
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Studies published in languages other than English.
Chemistry and pharmacokinetics
In a chemical way Garcinol, a polyisoprenylated benzophenone (Fig. 1), is naturally occurring phytochemical found in the plants Garcinia cambogia, also known as Malabar tamarind, and Garcinia indica, which belong to the Clusiaceae family and are commonly known as Kokum (Fernando et al. 2019). In current methods of methanol / and ethyl acetate extraction using chopped dried kokum plums produces good yields of garcinol (up to 5 g from 500 g dried kokum plums). Subsequently, yellow needles like crystal with a melting point of 132 °C are produced by crystallizing the concentrated eluate of hexane fraction through column chromatography of the concentrated ethyl acetate extract (silica gel 60, ethyl acetate/hexane 1:2) (Schobert and Biersack 2019; Ullah and Ahmad 2016). Another effective large-scale isolation technique was developed by washing the Garcinia indica fruits with water to remove the hydroxycitric acid and extracted using methanol. The methanol extract loaded on Celite was eluted using hexane. Finally, the extract of hexane was separated using column chromatography (Schobert and Biersack 2019).
Chemists have also recently extracted garcinol from the fruits of Garcinia multiflora, a South Chinese medicinal plant (Hemshekhar et al. 2011; Liu et al. 2017). 500 mg of garcinol were extracted from 5.2 kg of dried G. multiflora fruits. Garcinol was obtained by extracting the powdered dried fruits of G. multiflora using 95% ethanol and petroleum ether using column chromatography on silica gel followed by recrystallization (Liu et al. 2017). Additionally, plants belonging to the Garcinia species G. morella, G. yunnanensis, G. xanthochymus, and G. travancorica were shown to contain and yield Garcinia ethanol (Choudhury et al. 2018; Zheng et al. 2017; Jackson et al. 2015; Anu Aravind et al. 2016). Furthermore, it was recently discovered that the stem bark of the Garcinia species, G. buchananii, has also garcinol presence (Stark et al. 2015).
Safety aspects
Garcinia indica is the source of Garcinol. Assessing its safety is essential for therapeutic applications (Lim et al. 2021). Various areas of safety were examined in studies. These comprise the following: potential against inflammation, potential against cancer, reproductive toxicity, developmental toxicity, acute toxicity, and repeated dosage toxicity (Majeed et al. 2018). The acute and sub-chronic toxicity of 40% standardized garcinol was evaluated in rodents. This research had OECD criteria in mind. The toxicity of carcinol to rodents was found to be minimal. On clinical symptoms, behavior, development, reproduction, or histology, no negative consequences were observed. The hazardous nature of semisynthetic derivatives of garcinol (Beerwala et al. 2024). In a preclinical model, they investigated the metastasis of pulmonary melanoma. In mice in good health, the compounds had a beneficial effect without generating systemic damage. The anti-cancer and anti-inflammatory properties of Garcinol safety (Liu et al. 2015). They looked into how the inflammatory Aquaporins are modulated by Garcinol. It successfully inhibited the generation of proinflammatory cytokines in cell culture models. Garcinol inhibits alpha-amylase, indicating that Garcinia indica extract may have promise as an antidiabetic drug, according to research conducted in vitro and in silico (Kalita and Das 2024).
Preclinical research has shown encouraging results, however, the toxicity profile of Garcinol is still unknown to experts. Its safety for clinical application has to be further investigated (Majeed et al. 2018). Garcinol has an excellent safety profile according to preclinical research, and animal experiments have shown no significant harm. Nevertheless, more investigation is required by scientists to completely comprehend the clinical safety and treatment potential of ganciclovir for inflammatory and cancerous diseases. This includes pharmacokinetic investigations and clinical trials (Butnariu et al. 2022).
Major gastrointestinal cancer
Esophageal cancer
Esophageal cancer emerges as a significant challenge within the landscape of global health, as revealed by the GLOBOCAN 2018 data. This cancer ranked as the eighth most prevalent cancer worldwide and stands as the sixth most common cause of mortality from cancer, its effect is profoundly felt overpopulation. This cancer takes a terrible toll every year, taking the lives of more than 500,000 people worldwide—roughly 5.3% of all cancer-related deaths. Its range is extensive and significant global variation in distribution has been observed. In addition, the five-year survival rate is consistently poor, ranging from 15 to 20%. (Then et al. 2020; Uhlenhopp et al. 2020; Abbas and Krasna 2017). A study conducted on human esophageal cancer cell lines KYSE150 andgra KYSE450 suggests that Garcinol exerts significant inhibitory effects on metastasis-related pathways. Through its inhibition of p300 and CBP activity, garcinol interferes with the transcriptional machinery necessary for the production of metastasis-related genes, leads to inhibition of the transition of cancer cells to a more invasive phenotype. Moreover, Garcinol suppresses TGF-β1-induced activation of Smad2/3 and p300, attenuating the transcriptional activation of EMT markers (Fig. 2). Animal studies further support Garcinol’s potential as a therapeutic agent by demonstrating its ability to inhibit pulmonary metastasis in esophageal cancer models (Wang et al. 2020).
Gastric (stomach) cancer
Gastric cancer ranks as the fifth most common cancer worldwide, it stands as the fourth most common cause of cancer-related deaths, with nearly 989,600 new cases reported in 2008 and accounts for over 738,000 deaths worldwide each year. It should be noted that there is a significant gender difference in the incidence of gastric cancer, as men are twice as likely as women to develop this cancer (Gallanis et al. 2024; Sitarz et al. 2018). A research conducted by Zheng et al. on the human gastric cancer cell line HGC-27, shows that garcinol exhibits multiple approaches in combating gastric cancer. It reduces the expression of Cyclin D1, which slows down the rate of cell division and suppresses cell proliferation. Garcinol also inhibits invasion and metastasis through the downregulation of matrix metalloproteinases (MMPs), very crucial enzymes that break down the extracellular matrix. In addition, garcinol induces programmed cell death (apoptosis) in gastric cancer cells by regulating the important balance between pro- and anti-apoptotic proteins. It downregulates the anti-apoptotic protein Bcl-2 (B-cell lymphoma) whereas upregulating the pro-apoptotic protein BAX (Bcl X-related protein 2), eventually triggers the apoptotic pathway (Fig. 2). Garcinol also modulate the PI3K/AKT signaling pathway, which is often dysregulated in gastric cancer. By inhibiting AKT (Protein Kinase B) activation and downstream signaling, garcinol effectively suppresses neoplastic transformation of gastric cells. These finding together highlight the excellent potential of the therapeutic drug garcinol in the treatment of gastric cancer and provide an attractive avenue for further research and clinical development (Zheng et al. 2020).
Illustration of the Cancer Pathway in the Stomach and Esophagus: This detailed diagram highlights the molecular mechanisms and key factors involved in the development and progression of cancer within the gastrointestinal tract. The pathway underscores critical mutations, signaling pathways, and cellular changes that contribute to the onset and metastasis of stomach and esophageal cancers
Gallbladder cancer
Gallbladder cancer (GBC) is a malignancy of the biliary tract, and it accounts for 1.2% of global cancer diagnoses but 1.7% of cancer deaths, according to GLOBOCAN 2018. Despite the gallbladder’s small size, GBC causes around 165,000 deaths annually, making it the 22nd most incident but 17th most deadly cancer worldwide. It is more common among women than men, with 2018 estimates of 122,000 cases in women versus 97,000 in men, may be due to women’s longer life expectancy. GBC is very deadly due to its late diagnosis, in the US only 20% of cases are detected early, with advanced-stage median survival around a year (Rawla et al. 2019b). This cancer is more common in certain ethnicities and regions, notably the Indo-Gangetic plains of India, Mapuche Indians in Chile, and parts of South America. India, particularly its northern, northeastern, central, and eastern regions, accounts for about 10% of the global GBC cases (Dutta et al. 2019). A study conducted on gallbladder cancer (GBC) cell lines, GBC-SD and NOZ lines by Duan et al., revealed garcinol’s significant therapeutic benefits. The study found that garcinol inhibited the development and invasion of these cancer cells in a dose- and time-dependent manner. Garcinol inhibits the activity of matrix metalloproteinase 2 (MMP2) and MMP9 by downregulating their mRNA levels, and further inhibits the activation of the Stat3 and Akt signaling pathways in GBC-SD cells (Duan et al. 2018).
Pancreatic cancer
Pancreatic cancer stands out as a strong foe in the global health landscape, as it is the seventh greatest cause of cancer-related deaths globally and ranks 14th among the most common malignancies. Globocan data 2018, reported 0.43 million fatalities 0.46 million new cases and 0.43 million fatalities from this cancer. It frequently affects the elderly, with an incredible 90% of newly diagnosed patients being above the age of 55, with the majority falling between the ages of 70 and 80. Compared to women (4.0 per 100,000, 215,885 instances), men are more likely to experience it (5.5 per 100,000, 243,033 cases) (Rawla et al. 2019a). In India, pancreatic cancer ranks 24th with 10,860 new cases (1.03%) and 18th in mortality (McGuigan et al. 2018; Zhao and Liu 2020; Gaidhani and Balasubramaniam 2021; Rawla et al. 2019b). A comprehensive study conducted on pancreatic cancer cell lines (especially BxPC-3 and Panc-1) has elucidated the multifaceted role of garcinol in inhibiting various molecular pathways associated with pancreatic cancer progression. Western immunoblotting experiments conducted by Parasramka and colleagues revealed that Garcinol effectively inhibits molecules such as X-linked inhibitor of apoptosis (X-IAP) and cellular inhibitor of apoptosis (cIAP), which block apoptosis in pancreatic cancer cells by inhibiting caspases (caspase 3 and caspase 9), crucial enzymes in apoptosis. Garcinol reduces the production of prostaglandin E2 (PGE2), a pro-inflammatory molecule, by downregulating cyclooxygenase-2 (COX-2), an enzyme involved in PGE2 synthesis (Saadat and Gupta 2012). This action is mediated through the inhibition of NF-κB binding activity, as concluded by Electrophoretic Mobility Shift Assay (EMSA). NF-κB is a transcription factor that plays a crucial role in the survival and proliferation of pancreatic cancer cells (Bao at al. 2011). Garcinol inhibits matrix metalloproteinase-9 (MMP-9), an enzyme involved in tumor cell invasion, and vascular endothelial growth factor (VEGF), a key regulator of angiogenesis (the formation of new blood vessels). Additionally, garcinol suppresses the secretion of interleukin-8 (IL-8), a pro-inflammatory cytokine implicated in tumor angiogenesis, invasiveness, and metastasis (Parasramka and Gupta 2011). The study conducted on a mouse model demonstrated that dietary Garcinol significantly improved the survival rate of KPC mice. Notably, when administered alone, Garcinol exhibited the capability to arrest tumor progression and reduce the size of certain tumors, as assessed by MRI and ultrasound imaging (Saadat 2013). Further investigation conducted by Pandita et al. on the combined application of dietary compounds, garcinol, and curcumin, along with the study by Parasramka et al. on garcinol along with gemcitabine, shows a synergistic potential in suppressing the growth of human pancreatic cancer (PaCa) cells (Fig. 3). This integrated result presents a promising approach for treatment, potentially offering a more effective therapeutic option compared to the utilization of either compound alone (Pandita et al. 2014; Parasramka and Gupta 2012).
Liver cancer
Based on 2020 statistics, liver cancer stands as the sixth most prevalent cancer worldwide and ranks third in terms of cancer-related fatalities, with approximately 905,700 individuals diagnosed and 830,200 deaths from the cancer. In particular, the incidence in regions such as sub-Saharan Africa and Southeast Asia is significantly higher than in the United States. The fifth most prevalent cancer in males and the seventh most common in women is liver cancer. (Rumgay et al., 2022; Sung et al. 2021; Ferlay et al. 2015). Various studies have been done till date to find progression and cure of this cancer. The studies conducted by Sethi et al. they investigated the role of garcinol in liver cancer treatment, employing a comprehensive approach that included in vitro experiments using liver cancer cells C3A and HUH-7, in vivo studies with a mouse model, and computational analysis. Their findings revealed promising results, suggesting that garcinol targets the STAT3 signaling pathway, a key regulator of cancer progression. By inhibiting STAT3 phosphorylation, garcinol disrupts STAT3 dimerization, leading to the downregulation of critical STAT3-regulated genes involved in cancer cell survival and proliferation, such as cyclin D1, Bcl-2, Bcl-xL, survivin, Mcl-1, and VEGF. This multifaceted action not only hampers tumor growth but also induces apoptotic cell death, as evidenced by the activation of pro-caspase-3 and cleavage of PARP. Additionally, garcinol exhibits anti-angiogenic effects by targeting VEGF expression. Furthermore, its inhibition of STAT3 acetylation impedes the nuclear localization and DNA binding of STAT3, further reducing its transcriptional activity and contributing to its anti-cancer effects. Computational modeling supports these findings by suggesting direct binding of garcinol to the SH2 domain of STAT3, hindering its dimerization and transcriptional activity. In preclinical studies using a nude mouse model, garcinol significantly suppresses HCC tumor growth by suppressing expression of p-STAT3 in garcinol treated tumor tissues (Sethi et al. 2014). One more study conducted by Cheng’s et al. on Hep3B cells underscores garcinol’s role in inducing ROS production, triggering oxidative stress and apoptotic cell death. Furthermore, garcinol promotes TRAIL-induced apoptosis by modifying death receptors and anti-apoptotic proteins, as well as promoting GADD153 expression, which amplifies apoptotic events downstream (Cheng et al. 2010). Together, these findings indicate garcinol as a viable therapeutic agent against liver cancer, with several routes for intervention due to its unique modes of action.
Garcinol promotes apoptosis in liver cancer cells through both intrinsic and extrinsic pathways. In the extrinsic pathway, it upregulates death receptors (such as Fas ligand, TNF, and TRAIL), sensitizes cells to death ligands (via FADD and TRADD), and facilitates the formation and activation of the DISC (Death-Inducing Signaling Complex). This cascade ultimately triggers caspases, leading to apoptosis. In the intrinsic pathway, Garcinol activates caspases that cleave PARP(Poly (ADP-ribose) polymerase), a protein critical for DNA repair and cell death processes. It also boosts pro-apoptotic proteins like Bax, reduces anti-apoptotic proteins like Bcl-2, induces oxidative stress through increased ROS production, and suppresses STAT3 activation, further decreasing the transcription of genes that support cell survival and results in apoptosis
Colorectal cancer
Globally, colorectal cancer (CRC) is the third most common cancer diagnosis and the fourth most common cause of cancer-related mortality, there were almost 700,000 fatalities and 1.4 million new instances of colorectal cancer diagnosed in 2012 alone. Above data highlight its serious impact on public health and highlight the pressing need for efficient methods of early detection, treatment, and prevention of cancer (Arnold et al. 2017; Mármol et al. 2017; Sawicki et al. 2021). The investigation carried out on HT-29 colorectal cancer cells reveals the complex mechanisms by which garcinol demonstrates its powerful anti-cancer properties, providing deep understanding into its potential as therapeutic drug. Study suggest that garcinol inhibits FAK auto-phosphorylation on Tyr397 in a dose-dependent manner, triggering a series of molecular events that ultimately lead to the induction of apoptosis. Furthermore, garcinol exhibits notable suppression of key signaling pathways including Ras/MAPK, PI3K/Akt, and Src, which are essential controllers of cell division, proliferation, and survival. Another study suggests that, garcinol triggers mitochondrial disturbance, resulting in the release of cytochrome c into the cytosol. The subsequent activation of caspase-3, which is dependent on caspase-9, coordinates the amplification of apoptosis. This process is further enhanced by the cleavage of PARP, a crucial event in programmed cell death (Fig. 4). Garcinol promotes pro-apoptotic signaling by reducing the levels of the anti-apoptotic Bcl-2 protein and increasing the levels of the pro-apoptotic Bax protein. As a result, garcinol intensifies the induction of apoptosis in cancer cells. Garcinol not only affects apoptosis but it also acts as a potent inhibitor of colorectal cancer progression by targeting various key molecular players It downregulates various important genes such as mPGES-1, CXCR4, and VEGF, and reduces cancer aggressiveness. Moreover, garcinol shows a remarkable ability to prevent the invasive potential of HT-29 cells by down-regulating matrix metalloproteinase (MMP7) protein levels, as evidenced by real-time PCR analysis revealed significant decreases in MMP-2 and MMP-9 expression (Liao et al. 2005; Ranjbarnejad et al. 2017).
Mechanism of Garcinol function- Garcinol triggers apoptosis by the inhibition of STAT3 and NF-κB pathways (anti-apoptotic pathways), and downregulates anti-apoptotic protein Bcl-2 and, upregulating Bax which undergoes a conformational change and translocate to the mitochondria, and oligomerizes to form pores in the mitochondrial outer membrane which cause the release of cytochrome c into the cytosol. Cytochrome c binds to Apaf-1 (apoptotic protease activating factor-1) and procaspase-9 to form the apoptosome, leading to the activation of caspase-9. Which in turn activates executioner caspases 3 and results in apoptosis
Role of nanotechnology and synergism
Nanotechnology makes the delivery of Garcinol more effective in the battle against gastrointestinal malignancies. Garcinol, an anti-cancer bio-chemical for GI cancers (Table 1), is derived from Garcinia indica. However, Garcinol has difficulties getting to tumor effectively. Nanoparticles engineered for targeted delivery of specific compound (specially for tumor microenvironment remodelling) have emerged as promising tools in cancer treatment (Lu et al. 2024). Garcinol is wrapped with nanoparticles, which enhance its solubility and target tumor locations (Jacob et al. 2021). In combination with other anti-cancer agents, garcinol produces a synergistic effect. Nanoparticles enable controlled release with specific targeting of garcinol, further potentiating its effect on cancer cells (Aggarwal et al. 2020). Controlled release of Garcinol, specifically in the colon, is made possible by using pH-responsive nanoparticles. This minimizes side effects across the body and offers targeted treatment for gastrointestinal tumors (Brito et al. 2022). As a result, cancer cells can be actively targeted, improving the specificity and effectiveness of treatments. For better use, Garcinol may be encapsulated in nanoparticles which can shield it from the body’s breakdown and make it easier to absorb by the body (Li et al. 2023). Combine effect of peptides and nanoparticles enhance their ability to target specifically tumor cells (Dai et al. 2024). Exosomes are small, membrane-bound vesicles released from cells into the extracellular environment. As carriers of anti-tumor agents, they can modify the tumor microenvironment, results in significant change in cancer cell proliferation and migration (Paskeh et al. 2022). We have also looked into possible synergistic benefits among garcinol and other phytochemicals, like curcumin, along with garcinol and the cancer drugs currently available for treatments in pancreatic cancer cell lines, such as gemcitabine (Kopytko et al. 2021). Using a combinatorial approach, the findings show that garcinol and curcumin suppress Pancreatic cancer cells, Panc 1 and BxPC3, more so than either drug alone by increasing the induction of apoptosis (Rizvi et al., 2024). Using different doses and incubating periods, garcinol and gemcitabine were given alone and combined with human pancreatic cancer cell lines, BxPC 3 and Panc-1, that contained the wild-type and mutant K-ras genotypes, respectively (Mane et al. 2012). This treatment is intended to observe the level of apoptotic cell death and growth reduction. Compared to the individual therapies, the combination of garcinol and gemcitabine demonstrated a significant decrease in cell proliferation and an increase in apoptosis. Additionally, garcinol downregulated NF-κB, VEGF, Il 8, MMP-9, and activated PARP cleavage in concert with gemcitabine to promote its activity (Zheng et al. 2020). This highlights garcinol’s potential greater in combinatorial treatment approaches. However, its clinical translation faces several challenges. Among the most significant is their poor bioavailability which could be improved by their solubility and targeted delivery enhancement through nanotechnology (Ahmad et al. 2011). In addition, because interactions between various chemopreventive agents can produce different results due to their diversity, achieving the combined effect is still difficult. Understanding and optimizing these interactions requires extensive preclinical and clinical studies (Hong et al. 2007).
Conclusion and future perspectives
The evidence presented highlights the potential of garcinol as a promising therapeutic agent against gastrointestinal cancers. Studies demonstrate its ability to inhibit cancer cell proliferation, induce apoptosis, and suppress metastasis through various molecular mechanisms. Moreover, its low toxicity and high patient acceptance rate make it an attractive candidate for cancer treatment. It enhances chemotherapy effectiveness, exhibits anti-inflammatory effects, inhibits angiogenesis, and has a favorable safety profile in preclinical studies. These multi-targeted actions suggest Garcinol’s potential in both therapeutic and preventive oncology (Behera et al. 2016). However, challenges such as poor bioavailability and delivery issues need to be addressed. Future research should focus on optimizing garcinol’s delivery, possibly through nanotechnology, to enhance its efficacy and minimize side effects. Additionally, investigating synergistic combinations with other phytochemicals or conventional cancer drugs could lead to more effective treatments. Clinical trials are needed to validate garcinol’s efficacy and safety in patients. Additionally, further exploration of garcinol’s mechanisms of action and its effects on different types and stages of gastrointestinal cancers would provide valuable insights.
Data availability
No datasets were generated or analysed during the current study.
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The authors gratefully acknowledge the funding of the Deanship of Graduate Studies and Scientific Research, Jazan University, Saudi Arabia, through Project Number: RG24-L06.
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NP, RC, AC, MK and HST conceived the conceptualization, methodology, validation, and writing–review. AKS, SR and RC organized references and edited the manuscript. SH, DMM, PS, and HST revised the manuscript. All authors have read and agreed to publish the manuscript.
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Patwa, N., Chauhan, R., Chauhan, A. et al. Garcinol in gastrointestinal cancer prevention: recent advances and future prospects. J Cancer Res Clin Oncol 150, 370 (2024). https://doi.org/10.1007/s00432-024-05880-6
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DOI: https://doi.org/10.1007/s00432-024-05880-6