Advantages of NMNH
NMNH: 1. “Bonzyme” Whole-enzymatic method, environmental-friendly, no harmful solvent residues manufacturing powder. 2. Bontac is a very first manufacture in the world to produce the NMNH powder on the level of high purity, stability. 3. Exclusive “Bonpure” seven-step purification technology, high purity（up to 99%) and stability of production of NMNH powder 4. Self-owned factories and obtained a number of international certifications to ensure high quality and stable supply of products of NMNH powder 5. Provide one-stop product solution customization service
Advantages of NADH
NADH: 1. Bonzyme whole-enzymatic method, environmental-friendly, no harmful solvent residues 2. Exclusive Bonpure seven-step purification technology, purity up higher than 98 % 3. Special patented process crystal form, higher stability 4. Obtained a number of international certifications to ensure high quality 5. 8 domestic and foreign NADH patents, leading the industry 6. Provide one-stop product solution customization service
Advantages of NAD
NAD: 1. “Bonzyme” Whole-enzymatic method, environmental-friendly, no harmful solvent residues 2. Stable supplier of 1000+ enterprises around the world 3. Unique “Bonpure” seven-step purification technology, higher product content and higher conversion rate 4. Freeze drying technology to ensure stable product quality 5. Unique crystal technology, higher product solubility 6. Self-owned factories and obtained a number of international certifications to ensure high quality and stable supply of products
Advantages of MNM
NMN: 1. “Bonzyme”Whole-enzymatic method, environmental-friendly, no harmful solvent residues 2. Exclusive“Bonpure”seven-step purification technology, high purity（up to 99.9%) and stability 3. Industrial leading technology: 15 domestic and international NMN patents 4. Self-owned factories and obtained a number of international certifications to ensure high quality and stable supply of products 5. Multiple in vivo studies show that Bontac NMN is safe and effective 6. Provide one-stop product solution customization service 7. NMN raw material supplier of famous David Sinclair team of Harvard University
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Bontac Bio-Engineering (Shenzhen) Co., Ltd. (hereafter referred to as BONTAC) is a high-tech enterprise established in July 2012. BONTAC integrates R&D, production and sales, with enzyme catalysis technology as the core and coenzyme and natural products as main products. There are six major series of products in BONTAC, involving coenzymes, natural products, sugar substitutes, cosmetics, dietary supplements and medical intermediates.
As the leader of the global NMN industry, BONTAC has the first whole-enzyme catalysis technology in China. Our coenzyme products are widely used in health industry, medical & beauty, green agriculture, biomedicine and other fields. BONTAC adheres to independent innovation, with more than 170 invention patents. Different from the traditional chemical synthesis and fermentation industry, BONTAC has advantages of green low-carbon and high-value-added biosynthesis technology. What’s more, BONTAC has established the first coenzyme engineering technology research center at the provincial level in China which also is the sole in Guangdong Province.
In the future, BONTAC will focus on its advantages of green, low-carbon and high-value-added biosynthesis technology, and build ecological relationship with academia as well as upstream/downstream partners, continuously leading the synthetic biological industry and creating a better life for human beings.
Be careful to the fraudulent NMN products in the market
According to recent industrial report, only several products from worldwide NMN manufacturers came close to meeting label claim and contain not enough NMN. Almost products performed better, having at least 88% of the label claim up to small overages. A lone 250 mg product was identified as BRL. In sum, ChromaDex said that 64% of the products tested contained less than 1% of the stated amount of the active ingredient. which should give consumers pause. While this is a limited snapshot of the vast NMN finished product landscape. it does provide a glimpse into the high variability of product quality that is available. The majority of the products may purchase online contain such a small amount of NMN that there would be no clinical benefits achieved from the dose. Another concern with these adulterated products is that the actual contents are not known and could pose a risk to the user the company said in a statement.
BONTAC NMN product features and advantages
1、“Bonzyme”Whole-enzymatic method, environmental-friendly, no harmful solvent residues manufacturing powder
2、Exclusive“Bonpure”seven-step purification technology, high purity（up to 99.9%) and stability of production of NMN powder
3、Industrial leading technology: 15 domestic and international NMN patents
4、Self-owned factories and obtained a number of international certifications to ensure high quality and stable supply of products of NMN powder
5、Multiple in vivo studies show that Bontac NMN powder is safe and effective
6、Provide one-stop product solution customization service
7、NMN raw material supplier of famous David Sinclair team of Harvard University.
NMN powder produce methods utilized by manufacturers
NMN powder in general is typically produced via chemical or enzymatic synthesis, or fermentation biosynthesis. There are pros and cons to all three methods.
Chemical synthesis is expensive and labor intensive, and all raw ingredients used are categorized as “unnatural,” i.e., not from biological systems. There are, however, some advantages from the manufacturer’s perspective. The yield is well suited to mass NMN powder production, and all of those unnatural raw ingredients can be carefully controlled. But there are a number of drawbacks as well. Some of the solvents used in the manufacturing process are seriously bad from an environmental standpoint, and impurities and by-products can be challenging to remove from the finished product – that’s seriously bad for the consumer.
Enzymatic production of NMN powder, on the other hand, is considered a “green preparation method.” Like the chemical route, it’s pricey, but it offers a higher yield and impressively high purity. The finished NMN ticks all the boxes – stable, easily absorbed, lightweight, low density, and a low molecular structure.
Fermentation has also been explored as a method of producing NMN, but yield, though high quality, is pretty abysmal, so many supplement companies quite sensibly look to other, more efficacious processes.
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Frequently Asked Question
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1.Raw material production process
Bioenzyme catalysis is a popular production method in the industry. It has a high threshold and several key catalytic enzymes are expensive, accounting for about 80% of the overall production process cost, but it is also the safest and most efficient production method. In the production of NMN by bioenzyme catalysis, the use of food-grade raw materials is an important part of the process to ensure product safety and to ensure that standards are followed.
2.High standard of production conditions
Production conditions refer to the standard of labor consumption required to complete the qualified products of the unit under certain production organization and production technology conditions. There are certifications issued by regulatory authorities, such as cGMP in the United States, TGA in Australia, GMP in Japan, etc.
3.High standard of product testing.
Product testing requires reliable test methods and reagents that are used throughout the production process. They are not only inspection standards for the final product, but also for the intermediate stages of control, including testing of active ingredients, testing of heavy metals such as lead, arsenic and mercury, and testing of pathogenic bacteria, microorganisms and processing by-products.
For NMN products, the commonly used method for active ingredient content testing is high performance liquid chromatography (HPLC), which is efficient, accurate and precise. For different manufacturers, the standards for testing reagents are different. Strict manufacturers will purchase high purity, analytically pure reagents from third party standards companies as controls.
4.Safety assessment
For relatively new raw materials such as NMN, it is not enough for consumers to judge the safety of the product on the side of the merchant alone. At this point, the third-party authoritative assessment report is particularly important.
Currently, there are two generic safety assessment reports, one is a toxicological assessment report and the other is a safety assessment report. In China, toxicological assessment reports usually account for the majority. However, there are still few NMN companies that can issue such reports
5.Storage and Packaging
NMNs are usually stored in sealed containers for up to 12 months. If it can be stored for 24 months with insignificant changes in purity, the stability of NMN is very reliable. Currently, the more common packaging materials are pet or hope, which are pharmaceutical packaging materials. They are non-toxic, odorless, lightweight, portable and effectively isolate air and moisture.
The safety of NMN powder cannot be assessed since required clinical and toxicological studies have not been completed yet to establish the recommended safe levels for long term administration. Nevertheless, their safety and efficacy are uncertain and unreliable since most of them have not been backed up by rigorous scientific preclinical and clinical testing. This issue has been arisen as manufacturers are hesitant to pay for research and clinical trials due to potential lower profit margin, and there is no authorizing agency to regulate NMN products because it is often sold as functional food product rather than heavily regulated therapeutic drug. Therefore, more strict approval process has been demanded by consumer advocacy groups requesting regulatory agencies to set standard and restrictions for marketing anti-aging health products, considering safety, health and wellbeing of consumers. NMN should not be considered as a panacea for the elderly, because boosting NAD levels when not required may yield some detrimental effects. Therefore, the dose and frequency of NMN supplementation should be carefully prescribed depending on the type of age-related deficiency and all other confronting health conditions of the people. Other NAD precursors have been studied to discover the efficacy for diverse age-related deficiencies and they are used for particular deficiencies, only after they are proven for effectiveness and safe to use. Therefore, the same principle should be applied to NMN as well
First, inspect the factory. After some screening, NMN companied that directly face consumers pay more attention to brand building. Therefore, for a good brand, quality is the most important thing, and the first thing to control the quality of raw materials is to inspect the factory. Bontac company actually manufacturing NMN powder of high quality with the caterias of SGS. Secondly, the purity is tested. Purity is one of the most important parameters of NMN powder. If high purity NMN cannot be guaranteed, the remaining substances are likely to exceed the relevant standards. As the attached certificates demonstrates that the NMN powder produced by Bontac reach the purity of 99.9%. Finally, a professional test spectrum is needed to prove it. Common methods for determining the structure of an organic compound include Nuclear Magnetic Resonance Spectroscopy (NMR) and high-resolution mass spectrometry (HRMS). Usually through the analysis of these two spectra, the structure of the compound can be preliminarily determined.
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The latest research proves: Coenzyme NAD+ can enhance tumor immunity! Expert Comment from Chinese Academy of Sciences
On August 10, 2021, researchers from Shanghai University of Science and Technology published an article titled NAD+ supplement potentiates tumor killing function by rescuing defective TUBBY-mediated NAMPT transcription in tumor infiltrated T cells in Cell Reports, revealing that NAD+ in supplemented during CAR-T therapy and immune checkpoint inhibitor therapy, it can improve the anti-tumor activity of T. At present, the supplementary precursor of NAD+, as a nutritional product,has been verified for human consumption safety.This achievement provides a simply and feasible new method for improving the anti-tumor activity of T cells. Cancer immunotherapies including the adoptive transfer of naturally occurring tumor-infiltrating lymphocytes (TILs) and genetically engineered T cells, as well as the use of immune checkpoint blockade (ICB) to boost the function of T cells, have emerged as promising approaches to achieve durable clinical responses of otherwise treatment-refractory cancers (Lee et al., 2015; Rosenberg and Restifo, 2015; Sharma and Allison, 2015). Although immunotherapies have been successfully used in the clinic, the number of patients benefiting from them is still limited (Fradet et al., 2019; Newick et al., 2017). Tumor microenvironment (TME)-related immunosuppression has emerged as the major reason for low and/or no response to both immunotherapies (Ninomiya et al., 2015; Schoenfeld and Hellmann, 2020). Therefore, efforts to investigate and overcome TME-related limitations in immune therapies are of great urgency. The fact that immune cells and cancer cells share many fundamental metabolic pathways implies an irreconcilable competition for nutrients in TME (Andrejeva and Rathmell, 2017; Chang et al., 2015). During uncontrolled proliferation, cancer cells hijack alternative pathways for more rapid metabolite generation (Vander Heiden et al., 2009). As a consequence, nutrient depletion, hypoxia, acidity, and generation of metabolites that can be toxic in the TME may hinder successful immunotherapy (Weinberg et al., 2010). Indeed, TILs often experience mitochondrial stress within growing tumors and become exhausted (Scharping et al., 2016). Interestingly, multiple studies also indicate that metabolic changes in TME could re-shape T cell differentiation and functional activity (Bailis et al., 2019; Chang et al., 2013; Peng et al., 2016). All these evidences inspired us to hypothesize that metabolic reprogramming in T cells might rescue them from a stressed metabolic environment, thereby reinvigorating their anti-tumor activity (Buck et al., 2016; Zhang et al., 2017). In this current study, by integrating both genetic and chemical screens, we identified that NAMPT, a key gene involved in NAD+ biosynthesis, was essential for T cell activation. NAMPT inhibition led to robust NAD+ decline in T cells, thereby disrupting glycolysis regulation and mitochondrial function, blocking ATP synthesis, and dampening the T cell receptor (TCR) downstream signaling cascade. Building on the observation that TILs have relatively lower NAD+ and NAMPT expression levels than T cells from peripheral blood mononuclear cells (PBMCs) in ovarian cancer patients, we performed genetic screening in T cells and identified that Tubby (TUB) is a transcription factor for NAMPT. Finally, we applied this basic knowledge in the (pre) clinic and showed very strong evidence that supplementation with NAD+ dramatically improves the anti-tumor killing activity both in adoptively transferred CAR-T cells therapy and immune check point blockade therapy, indicating their promising potential for targeting NAD+ metabolism to better treat cancers. 1.NAD+ regulates the activation of T cells by affecting energy metabolism After antigen stimulation, T cells undergo metabolic reprogramming, from mitochondrial oxidation to glycolysis as the main source of ATP. While maintaining sufficient mitochondrial functions to support cell proliferation and effector functions.Given that NAD+ is the main coenzyme for redox, the researchers verified the effect of NAD+ on the level of metabolism in T cells through experiments such as metabolic mass spectrometry and isotope labeling. The results of in vitro experiments show that NAD+ deficiency will significantly reduce the level of glycolysis, TCA cycle and electron transport chain metabolism in T cells. Through the experiment of replenishing ATP, the researchers found that the lack of NAD+ mainly inhibits the production of ATP in T cells, thereby reducing the level of T cell activation. 2.The NAD+ salvage synthesis pathway regulated by NAMPT is essential for T cell activation The metabolic reprogramming process regulates the activation and differentiation of immune cells. Targeting T cell metabolism provides an opportunity to modulate the immune response in a cellular way. Immune cells in the tumor microenvironment, their own metabolic level will also be correspondingly affected. The researchers in this article have discovered the important role of NAMPT in the activation of T cells through genome-wide sgRNA screening and metabolism-related small molecule inhibitor screening experiments. Nicotinamide adenine dinucleotide (NAD+) is a coenzyme for redox reactions and can be synthesized through the salvage pathway, de novo synthesis pathway, and Preiss-Handler pathway. The NAMPT metabolic enzyme is mainly involved in the NAD+ salvage synthesis pathway. Analysis of clinical tumor samples found that in tumor-infiltrating T cells, their NAD+ levels and NAMPT levels were lower than other T cells. Researchers speculate that NAD+ levels may be one of the factors that affect the anti-tumor activity of tumor-infiltrating T cells. 3.Supplement NAD+ to enhance the anti-tumor activity of T cells Immunotherapy has been exploratory research in cancer treatment, but the main problem is the best treatment strategy and the effectiveness of immunotherapy in the overall population. Researchers want to study whether enhancing the activation ability of T cells by supplementing NAD+ levels can enhance the effect of T cell-based immunotherapy. At the same time, in the anti-CD19 CAR-T therapy model and anti-PD-1 immune checkpoint inhibitor therapy model, it was verified that supplementation of NAD+ significantly enhanced the tumor-killing effect of T cells. The researchers found that in the anti-CD19 CAR-T treatment model, almost all mice in the CAR-T treatment group supplemented with NAD+ achieved tumor clearance, while the CAR-T treatment group without NAD+ supplemented only about 20 % Of mice achieved tumor clearance. Consistent with this, in the anti-PD-1 immune checkpoint inhibitor treatment model, B16F10 tumors are relatively tolerant to anti-PD-1 treatment, and the inhibitory effect is not significant. However, the growth of B16F10 tumors in the anti-PD-1 and NAD+ treatment group could be significantly inhibited. Based on this, NAD+ supplementation can enhance the anti-tumor effect of T cell-based immunotherapy. 4.How to supplement NAD+ The NAD+ molecule is large and cannot be directly absorbed and utilized by the human body. The NAD+ directly ingested orally is mainly hydrolyzed by brush border cells in the small intestine. In terms of thinking, there is indeed another way to supplement NAD+, which is to find a way to supplement a certain substance so that it can synthesize NAD+ autonomously in the human body. There are three ways to synthesize NAD+ in the human body: Preiss-Handler pathway, de novo synthesis pathway and salvage synthesis pathway. Although the three ways can synthesize NAD+, there is also a primary and secondary distinction. Among them, the NAD+ produced by the first two synthetic pathways only accounts for about 15% of the total human NAD+, and the remaining 85% is achieved through the way of remedial synthesis. In other words, the salvage synthesis pathway is the key to the human body to supplement NAD+. Among the precursors of NAD+, nicotinamide (NAM), NMN and nicotinamide ribose (NR) all synthesize NAD+ through a salvage synthesis pathway, so these three substances have become the body's choice for supplementing NAD+. Although NR itself has no side effects, in the process of NAD+ synthesis, most of it is not directly converted into NMN, but needs to be digested into NAM first, and then participate in the synthesis of NMN, which still cannot escape the limitation of rate-limiting enzymes. Therefore, the ability to supplement NAD+ through oral administration of NR is also limited . As a precursor for supplementing NAD+, NMN not only bypasses the restriction of rate-limiting enzymes, but is also absorbed very quickly in the body and can be directly converted into NAD+. Therefore, it can be used as a direct, rapid and effective method to supplement NAD+. Expert Reviews: Xu Chenqi (Excellence and Innovation Center of Molecular Cell Science, Chinese Academy of Sciences, Immunology Research Expert) Cancer treatment is a problem in the world. The development of immunotherapy has made up for the limitations of traditional cancer treatment and expanded the treatment methods of doctors. Cancer immunotherapy can be divided into immune checkpoint blocking therapy, engineered T cell therapy, tumor vaccine, etc. These treatment methods have played a certain role in the clinical treatment of cancer. At the same time, this also makes the current focus of immunotherapy research on how to further enhance the effect of immunotherapy and expand the beneficiaries of immunotherapy.
Tailoring Personalized Dosage Regimens of NMN Based on NAD Concentration
Introduction Nicotinamide mononucleotide (NMN), one precursor of nicotinamide adenine dinucleotide (NAD+), has been ascertained to be implicated with multiple biological processes such as cellular redox regulation and metabolism as well as DNA repair. Herein, post-hoc analysis of a double-blinded clinical trial is carried out. On the premise of safety, to optimize NMN utilization, personalized dosage regimen can be developed by monitoring the NAD concentration. Research protocol A total of 80 healthy middle-aged adults (age: 40 to 65) are enrolled in the randomized, double-blinded, controlled clinical trial of NMN supplementation, who are randomly assigned into four groups and administrated with placebo or NMN (300 mg, 600 mg, or 900 mg) for 60 days. The clinical data including age, sex, body mass index (BMI), blood biological age, homeostatic model assessment for insulin resistance (HOMA-IR), blood NAD concentration, 6-minute walk test and 36-item short-form survey (SF-36), along with adverse events, are collected at baseline and after supplement, followed by comparison and correlation analysis. The association of participant clinical data at baseline and after supplement of NMN NAD concentration change (NADΔ) is dose-dependently increased post NMN supplementation, with a large coefficient of variation (29.2–113.3%) within group. Notably, only HOMA-IR has a prominent association with blood baseline NAD. As a whole, NMN supplementation has a positive impact on the physical endurance and general health conditions of healthy adults, as evidenced by the obvious improvement of six-minute walking distance, blood biological age, and SF-36 score. In addition, the increase of about 15 nmol/L in NADΔ is related to clinically improvements in the walking distance of 6-minute walk test and the SF-36 score. The safety oral dose of NMN in clinical trials As demonstrated by the registered clinical trials NCT04823260 and CTRI/2021/03/032421, NMN supplementation can boost blood NAD concentration, which is safe and well tolerated with daily oral administration of 900 mg. Strikingly, clinical efficacy expressed by blood NAD concentration and physical performance reaches highest at a dose of 600 mg daily oral intake. Conclusion Blood NAD concentration is increased by NMN supplement at a dose-dependent manner. Personalized regimen of NMN supplement should be based on the close monitoring of NAD concentration change. In addition to longer follow-up duration and large sample size, future trials on the efficacy of NMN supplement should pay much attention to the factors affecting baseline NAD concentration. Reference [1] Kuerec AH, Wang W, Yi L, et al. Towards personalized nicotinamide mononucleotide (NMN) supplementation: Nicotinamide adenine dinucleotide (NAD) concentration. Mech Ageing Dev. 2024;218:111917. doi:10.1016/j.mad.2024.111917 [2] Song Q, Zhou X, Xu K, Liu S, Zhu X, Yang J. The Safety and Antiaging Effects of Nicotinamide Mononucleotide in Human Clinical Trials: an Update. Adv Nutr. 2023;14(6):1416-1435. doi:10.1016/j.advnut.2023.08.008 BONTAC NMN As David Sinclair, a famous professor of genetics at Harvard University, once pointed out in an interview, NMN has unstable molecular structure, which is easily degraded into nicotinamide if stored in the conventional environment. The satisfactory efficacy of NMN cannot be guaranteed if the quality and purity NMN products are not high. BONTAC is the first choice of NMN raw material suppliers worldwide, who has dedicated to the manufacture of raw material for enzyme and natural products for 12 years, with self-owned factory, 173 patents and professional R&D team. The purity of BONTAC NMN can reach up to 99.5%. Also, BONTAC is the NMN raw material supplier of David Sinclair team, who uses the raw materials of BONTAC in a paper titled “Impairment of an Endothelial NAD+-H2S Signaling Network Is a Reversible Cause of Vascular Aging”. Our services and products have been highly recognized by global partners. The coenzyme products of BONTAC are widely used in fields such as nutritional health, biomedicine, medical beauty, daily chemicals and green agriculture. Disclaimer This article is based on the reference in the academic journal. The relevant information is provided for sharing and learning purposes only, and does not represent any medical advice purposes. If there is any infringement, please contact the author for deletion. The views expressed in this article do not represent the position of BONTAC. Under no circumstances will BONTAC be held responsible or liable in any way for any claims, damages, losses, expenses, costs or liabilities whatsoever (including, without limitation, any direct or indirect damages for loss of profits, business interruption or loss of information) resulting or arising directly or indirectly from your reliance on the information and material on this website.
The Significance of NAD+ in Intestinal Senescence Caused by Elevated mtDNA Mutations
1.Introduction The senescence in mammals is generally concomitant with the dysregulation of intestinal homeostasis and the accumulation of mitochondrial DNA (mtDNA) mutations. High-burden mtDNA mutations lead to NAD+ depletion and activate the transcription factor ATF5-dependent UPRmt, which in turn promotes and exacerbates the intestinal senescence phenotype. By supplementation with the NAD+ precursor NMN, this intestinal senescence phenotype can be rescued to some extent, as evidenced by the recovery of intestinal organoid differentiation and the increased number of intestinal stem cells. 2. NAD+ depletion during intestinal senescence caused by mtDNA mutations There is impairment of NADH/NAD+ redox in Mut/Mut*** intestines, as manifested by the enriched NADH dehydrogenase complex assembly pathway. Through transfection of intestinal crypt cells with SoNar (a NADH/NAD+ sensor), a higher NADH/NAD+ ratio is observed in Mut/Mut*** mice, hinting the perturbed redox potential. Likewise, following transfection of intestinal crypt cells with FiNad (a NAD+ sensor), less NAD+ content is discovered in the Mut/Mut*** cells. All of these findings mirror NAD+ depletion in the intestinal senescence triggered by mtDNA mutations. Note: mtDNA mutations are classified into four types: negligible (WT/WT), low (WT/WT*), moderate (WT/Mut**) and high (Mut/Mut***). 3. The link between mtDNA mutation content and physiological intestinal senescence The small intestine of aged mouse intestine is characterized by decreased intestinal crypt number, increased villus length, higher expression of CDKN1A/p21 (a well-known senescence marker) and shorter telomere length, which is accompanied by accumulation of mtDNA mutations, primarily low-frequency (less than 0.05) point mutations. 4. LONP1 protein as a candidate marker for intestinal senescence caused by accumulated mtDNA mutations Mitochondrial unfolded protein response (UPRmt) is activated by a variety of mitochondrial stresses, including protein imbalances between mitochondria and the nucleus as well as impaired mitochondrial protein transport. The hallmarks of UPRmt are increased protein expression levels of LONP1, HSP60 and ClpP. Noteworthily, only LONP1 protein is specifically upregulated in senescent UPRmt activation triggered by accumulated mtDNA mutations, which may be a candidate biomarker for intestinal senescence. 5. The role of NAD+ in intestinal senescence induced by elevated mtDNA mutations. NAD+ repletion in vivo alleviates the small intestine senescent phenotypes caused by mtDNA mutation burden, and rescues the decreased colony formation efficiency in Mut/Mut*** intestinal organoids. NAD+-dependent UPRmt triggered by mtDNA mutations regulates intestinal senescence. These data further indicate that NAD+ depletion functions as a key mediator of the intestinal senescence induced by accumulated mtDNA mutations. 6. The role of NAD+ in the signal pathways regulating intestinal senescence caused by increased mtDNA mutations NAD+ repletion rescues the Foxl1 downregulation and Notch1 upregulation in Mut/Mut*** mice, suggesting that mtDNA mutation burden can regulate the function or number of niche cells through NAD+ depletion. In addition, NAD+ depletion caused by increased mtDNA mutation burden induces the decline of LGR5-positive intestinal cells via impairment of the Wnt/β-catenin pathway. 7. Conclusion NAD+ repletion is significant for the regulation of intestinal homeostasis, playing a critical role in rescuing the intestinal senescence phenotype caused by accumulated mtDNA mutations. Reference Yang, Liang et al. “NAD+ dependent UPRmt activation underlies intestinal aging caused by mitochondrial DNA mutations.” Nature communications vol. 15,1 546. 16 Jan. 2024, doi:10.1038/s41467-024-44808-z About BONTAC BONTAC is a high-tech enterprise established in July 2012. BONTAC integrates R&D, production and sales, with enzyme catalysis technology as the core and coenzyme and natural products as main products. BONTAC has over 160 domestic and foreign patents, leading the industry of coenzyme and natural products. BONTAC has rich R&D experience and advanced technology in the biosynthesis of NAD and NMN. High quality and stable supply of products can be ensured here. Disclaimer This article is based on the reference in the academic journal. The relevant information is provide for sharing and learning purposes only, and does not represent any medical advice purposes. If there is any infringement, please contact the author for deletion. The views expressed in this article do not represent the position of BONTAC.